WO2020022502A1 - Siphon water supply device and siphon water supply method - Google Patents

Abstract

[Problem] Provided are a siphon water supply device and a siphon water supply method by which, during a siphon water supply action, stopping of a siphon action caused by hollowing resulting from progress in an in-tube vaporization phenomenon that occurs because of negative pressure inside a siphon tube is prevented, and even on a landform where an obstacle having a higher level than a high water level area is present between the high water level area and an outlet in a low level area located on a low place and where a gravity flow of water in a flooding part located in the high water level area is impossible, water in the high water level area is moved to the low level area by applying the siphon action. [Solution] A siphon water supply device 100 according to the present invention is provided with: a water supply hose 10; and a vaporization amount adjustment opening/closing device 41 for retaining a portion of water flowing in the water supply hose, at a position equal to or below a water level in the flooding part in an upstream section, on the downstream side after a water head pipe top part.

Description

Siphon water supply device and siphon water supply method

The present invention relates to a siphon water supply device for supplying water in a high water area or water to a low area. In particular, the present invention relates to a siphon water supply device and a siphon water supply method capable of increasing a water supply amount by increasing a limit head.

Conventionally, as a method of sending water from a flooded portion such as a pond, a swamp, a river, or a pool, there is a method of sending water using a water sending device such as a submersible pump. In the case of the drainage method using the water supply device, since the water supply device is operated by electricity, drainage was possible even when the position of the discharge port of the drainage hose was higher than the water level of the flooded portion. Therefore, when conducting drainage planning, the only consideration was whether the pump function could get over the head to the top of the embankment.

水中 The operation of a submersible pump used for draining a natural dam caused by a sediment disaster caused by an earthquake or heavy rain in the past required enormous costs such as fuel costs and fuel transportation costs by helicopter. In response to this, various siphon water supply devices that can be effectively used at the time of disaster have been proposed. However, any of the proposed methods of starting the siphon water supply device closes the open / close valves at the upstream and downstream of the siphon drainage hose, opens the water inlet / open valve provided at the top of the pipe, and operates a submersible pump or the like. Continue water injection until the inside of the siphon drainage hose is full. When the water is full, stop the water supply device, close the water inlet opening / closing valve, and open the upstream water inlet and downstream outlet opening / closing valves. According to the difference between the water level of the flooded section and the head difference of the discharge port side, the water of the upstream flooded section is sucked into the siphon drainage hose, flows down, and is drained to the discharge port side. The role of the electric water supply device in this conventional siphon water supply device was only to supply water until the inside of the drain hose became full. After that, when the siphon action was activated, the function of the water supply device was lost.

However, siphon drainage is limited to a head of about 7m. When the lift exceeds about 7 m, vaporization due to negative pressure starts to occur in the topmost hose. When the head is further increased, there is a problem that the inside of the water supply hose is hollowed out, the flow is divided, the water supply is stopped, and the drainage operation by the siphon cannot be performed. At an actual site, drainage work may be required even when the head is 7 m or more due to various situations. Therefore, when the head was 7 m or more, there was no choice but to perform drainage work with water supply equipment. However, assuming that the fuel consumption of the submersible pump is "1", the siphon can drain at a low fuel consumption ratio of only "0.0007" including start-up and maintenance. The merit of implementing is great.

Japanese Patent No. 5785634

The present invention provides a structure for preventing or reducing cavitation due to a vaporization phenomenon generated by a negative pressure in a siphon pipe due to a siphon action, in addition to a drainage operation by a siphon action and a drainage by a water supply device, in order to solve the above-mentioned problem. By having both advantages of work, the same drainage device can combine or switch the drainage function of the siphon and the drainage function of the water supply equipment, and the siphon has an increased drainage at a high head of 7m or more. Provide a drainage device.

The present invention employs the following means in order to achieve the above-mentioned main object. A siphon water supply device and a siphon water supply method according to the present invention are siphon water supply devices using a siphon effect, and a vaporization amount adjusting opening / closing device for preventing or reducing a vaporization phenomenon generated by a negative pressure in a siphon pipe due to the siphon effect. And a vaporizer for retaining a part of the water flowing in the water supply hose at a position below the water level of the flooded portion at the upstream portion on the downstream side from the flooded portion through the head of the lift pipe. It is characterized by having an opening and closing device for adjusting the amount.

The opening and closing device for adjusting the amount of vaporization includes a hole for flowing water and a gate portion as an opening and closing portion for the hole for flowing water, a surrounding portion around the top, bottom, left and right including a space for sliding the gate and the gate portion, and a hole for flowing water. A pair of clamping plates having a flange formed with holes around the water flow hole, and a vertical movement bolt for vertically moving the gate portion between the clamping portion and the clamping plate. It is possible to use a power tool such as a rotating impact at the tip of the bolt, and it is also possible to rotate the bolt using a handle that matches the bolt size It is. Rather than a large and heavy valve structure in which the conventional gate portion and the connecting flange portion have different structures, a pair of holding plates having a flange formed with a hole around the flowing water hole, The gate portion may be sandwiched so that the entire plate is thinned by using the respective plate members in a thin direction.

By adopting such a configuration, a flange hole provided in the vaporization amount adjustment opening / closing device when connecting the vaporization amount adjustment opening / closing device and the water supply hose, and a flange member provided at the end of the water supply hose side are provided. It can be fixed firmly with bolts and nuts together with the holes. Conventionally, the flange portion of the holding plate extends from the end of the holding plate sandwiching the upstream and downstream sides of the gate to provide holes, and has a structure that also serves as a flange portion for connecting to the piping at the upstream portion and the downstream portion. The separately provided flange portion for connecting pipes can be omitted, and the overall shape is flat so that weight reduction can be achieved.

The discharge port of the water supply hose is a water supply hose made of a material capable of holding a cross-sectional shape which is always opened and arranged,
The water supply hose connected to the water supply device arranged in the flooded part is connected to a water injection junction member having a flow direction switching valve at least in whole or in part by a flexible water supply hose, and is connected to the water supply hose. In a siphon water supply system equipped with a water supply device that merges with the water supply system, the drainage work progresses and the water level in the upstream flooded area drops, causing the head to exceed approximately 7 m. If the vaporization is large enough to cause a vaporization phenomenon in the hose, operate a vaporization adjustment switchgear to prevent or eliminate cavities caused by vaporization due to negative pressure at the pipe top in siphon water supply work. It is possible to add a water supply operation by a water supply device that can maintain a stable siphon action in the siphon. Limit lift height and water content of the theoretical, and may be a siphon water conveying device according to the features it possible to water beyond the limit lift height and drainage of the water supply device.

限界 The limit head of the siphon function is about 7 m. When the head exceeds about 7 m, bubbles start to be generated inside the top of the water supply hose pipe due to the vaporization phenomenon due to negative pressure. However, as the head becomes larger, the generation of bubbles becomes more intense, and a phenomenon occurs in which the inside of the water supply hose eventually becomes hollow and the flow is cut off, and the water supply operation stops. This is because water in the water supply hoses on the upstream and downstream sides of the pipe at the boundary tends to drop due to gravity, so that negative energy acts on the pipe top, causing a vaporization phenomenon due to negative pressure. However, the cavity is filled with the water by supplementarily injecting water into the cavity of the stopped flow by the water supply function of the water supply device. As a result, the inside of the drain hose from the upstream flood pond to the downstream discharge port is connected with water, and the water between the upstream discharge port and the downstream discharge port tends to flow down. As a result, the water in the flooded section is sucked into the water inlet, flows through the water supply hose, and acts as a siphon. In other words, when the lift is 7 m or more, a cavity is formed at the top of the pipe, and it looks as if the siphon action has stopped. However, since the energy of the siphon action continues to work both upstream and downstream of the pipe top, the siphon action is activated when the cavity at the top of the pipe is filled with the auxiliary water supply of the water supply equipment, and the siphon water supply operation restarts I do. In this way, not only the head and water volume of the siphon function are improved by the auxiliary water supply of the water supply equipment, but also the head and water supply of the water transmission equipment are improved, and the synergistic effects of the respective energies work to make both functions work. A greatly improved siphon water supply device can be provided.

Further, a water supply hose of a material capable of maintaining a cross-sectional shape in which a discharge port that is always opened at a position lower than the water surface of the flooded portion from the flooded portion via the top of the lifting pipe is disposed,
A water supply device that is disposed in the flooded portion and is connected to the water supply hose to supply water.
In the water supply device comprising:
When the head is approximately 7 m or less, the water supply device is activated to start the siphon action and water is supplied into the water supply hose, and the water supply device is stopped when the inside of the water supply hose is almost fully filled with water, The flow in the water supply hose is operated by a water supply operation using a siphon.

When the head is approximately 7 m or less, the water supply device is started to activate the siphon action, water is injected into the water supply hose, and the water supply device is stopped when the cross section of the water supply hose is almost fully filled. The siphon water supply operation can be performed by drawing water in the flooded part by the atmospheric pressure and the potential energy of the priming water downstream from the pipe top of the water supply hose. Further, according to the present invention, even after the siphon is activated, the water supply of the water supply equipment is performed in combination, so that a synergistic effect of both water supply capacities can be achieved, thereby exhibiting a water supply function that exceeds a single function. When starting the siphon with multiple pipes, ensure that the connection between the water supply device and the water supply hose is watertight, remove the water supply device, and use the water supply device to merge the water from the second and subsequent siphon water supply devices. It can also be used for water injection in parts. Of course, the water supply equipment may be provided for each pipe of the water supply hose.

Furthermore, the siphon water supply device and the siphon water supply method according to the present invention,
The method is characterized in that the water supply method is switched or used in combination with turning on and off the power of the water supply equipment at a boundary between a height of 7 m and a height of 7 m or less.

Thus, the siphon water supply method according to the present invention can operate the siphon water supply operation when the head is approximately 7 m or less. This has a great effect as a drainage device that does not use electricity or fuel. On the other hand, in the event of an emergency such as a disaster, when it is necessary to prioritize an increase in the amount of drainage without taking into account electricity bills and fuel consumption, even if the head is 7 m or less, the water supply equipment will be used even after the siphon operation is activated. By performing the water feeding operation, it is possible to provide a water feeding device that exhibits a water feeding function that exceeds the individual water feeding operation capability.

On the other hand, even when the head is approximately 7 m or more, by using the same water supply device and adding water supply by the water supply device while the siphon water supply function is being performed, the synergistic effect of the siphon and the water supply device causes the theoretical limit height of the siphon to rise. It is possible to transmit water that greatly exceeds the individual water supply capacity, such as the water supply amount, the critical head height and the drainage amount of the water supply equipment. Therefore, according to the siphon water supply device of the present invention, the water supply operation is switched according to the situation by turning ON / OFF the power supply of the water supply device at a boundary of a height of 7 m or more and 7 m or less at the boundary between the water supply device and the siphon action. Alternatively, the water supply operation can be performed in combination.

In this way, the drainage work can be continued by utilizing only the siphon function if the head is 7 m or less according to the rise or fall of the water level in the flooded section, thus reducing fuel consumption and transportation and supply costs. it can. Thereby, the emission of greenhouse gas can be reduced. However, in cases such as when a large amount of drainage must be prioritized, large amounts of drainage due to a synergistic effect can be achieved by using a siphon and water supply equipment in combination according to the situation. Even if the water level fluctuates and the head becomes 7 m or more, the same drainage device can be used as it is and the water supply equipment function can be used together, so by activating the water supply equipment function, it can be used continuously with the siphon function. .

A siphon water supply device according to the present invention includes a water supply hose of a material capable of maintaining a cross-sectional shape in which a discharge port that is always opened from a flooded portion via a lift pipe top to a position lower than the water surface of the flooded portion is provided. ,
A water supply device that is disposed in the flooded portion and is connected to the water supply hose to supply water.
With
The water supply hose has a first opening connected to the water supply hose that absorbs water from the water filling part by a siphon action, and a water supply hose connected to the water supply equipment disposed in the water storage part. A second opening connected to the first opening and a third opening connected to the water supply hose for supplying water coming from the second opening to the downstream. Equipped with a water injection merging member,
In the work of switching the flow direction by the switching valve being pushed by the water flow to move and switch the flow direction, the water injection junction member limits the movement range of the switching valve so that the first opening or the second opening is not fully opened. A water injection merging member may be provided with a switching valve movement stopping member for stopping the switching valve. The phone water supply device is characterized in that the water supplied from the second opening is connected to the water supply converging member by which the water supplied from the second opening can be switched in the water supplying direction by the structure of the water filling converging member. You may.

By using a water inlet / joining member upstream of the water supply hose of the siphon water supply device, the water supply hose on the water absorption side of the siphon is joined from the side of the water supply hose, so that when the water supply equipment is stopped, water is absorbed from the water supply hose on the water supply side of the siphon. Then, it is possible to switch to a water supply operation in which the water is supplied to the downstream water supply hose through the water supply joining member and discharged from the discharge port in the downstream portion. Thereby, when switching to siphon water supply, water is mainly supplied from the siphon water-absorbing hose side. For this reason, since it is not necessary to send water through a complicated structure such as a screw inside the water sending device when the water injection merging member is not used, the amount of water sent can be increased.

特 に In addition, especially in the case of a head of 7 m or more, in addition to the siphon action, work to perform auxiliary water supply using a water supply device to prevent the occurrence of a cavity accompanying the vaporization phenomenon at the pipe top of the water supply hose. In this case, if the head difference is large, the siphon absorbs water and the flow rate passing through the water supply device increases. When a large amount of water passes through the water supply device due to the siphon action, a phenomenon occurs in which a current for rotating the screw is left, and the water supply device is damaged due to an overcurrent phenomenon. However, the structure of the present invention includes the respective water passages on the water supply device side and the siphon water absorption side. Therefore, even if the flow rate due to siphon water absorption increases, the flow of the siphon flows through the siphon water absorption hose to the water supply hose without passing through the water supply device. Thereby, the amount of water supplied from the water supply device side is within the range of water supply depending on the capacity of the water supply device, and there is an effect that occurrence of overcurrent can be prevented.

Furthermore, in the siphon water supply device according to the present invention, the flow direction of the water is switched to a junction of the flow of the water from the first opening and the flow of the water from the second opening in the water joining member. It is also possible to provide a switching valve which is pushed by the water pressure of each water flow to close the water passage of the other party. By employing such a configuration, the flow of water from the first opening and the flow of water from the second opening can be switched by the water flow.

Furthermore, in the siphon water supply device according to the present invention, the water injection joining member prevents the first opening or the second opening from being fully opened in a work in which the switching valve is pushed by the water flow to move and switch the flow direction. In order to limit the movement range of the switching valve, a switching valve movement restricting member for restricting the switching valve may be provided.

Further, in the siphon water supply device according to the present invention, together with or instead of the switching valve described above, the flow of water by the siphon from the first opening, and the flow of water from the water supply device from the second opening. The first opening and the second opening may be provided with a check valve for opening in order to switch the direction of flow. That is, in the case of water supply by the water supply device, the check valve for the opening provided in the second opening is opened by the water pressure, and the check valve for the opening provided in the first opening is closed. Then, when the water supply device is stopped, the water pressure to the check valve for the opening provided in the second opening disappears, the check valve closes, and in response to this, the first check is performed by the action of siphoning water from the first opening. The check valve for opening provided in the opening is opened by the water pressure, and the siphon water supply operation is continued. That is, an effect similar to that of the above-described switching valve is obtained.

Further, in the siphon water supply device according to the present invention, the water injection merging member is configured to switch a flow direction of water to one or more of the first opening, the second opening, and the third opening. The opening / closing member for the opening may be provided. With this structure, even when a water injection merging member is provided on the downstream side of the top of the lift pipe, by closing the opening / closing device of the third opening, water injected from the second opening is siphoned through the first opening. Water can be supplied to the water supply hose on the side to fill the water supply hose. In this state, the opening and closing device of the first opening is closed, and at the same time, the opening and closing device of the third opening is opened, and water is supplied into the water supply hose by the water supply device. When the inside of the water supply hose starts to flow in a full state, stop the water supply device and open the opening / closing device of the first opening, so that the water in the water supply hose on the siphon suction side sucks the water in the upstream pond. Will work. This operation is particularly effective when the length of the water supply hose connected to the third opening is not more than twice as long as the total length of the siphon suction hose connected to the first opening.

Furthermore, in the siphon water supply device according to the present invention, when the discharge port of the water supply hose connected to the third opening of the water injection merging member is disposed at a position lower than the water level of the flooded portion, the downstream portion is hard from there. It may be characterized by securing a head difference with a flexible hose instead of a flexible hose.

Further, in the siphon water supply apparatus according to the present invention, at least a part or the whole of the water supply hose connected to the second opening of the water supply / merging member is made of a flexible water supply hose, and the water supply device and the water / merging member are combined. May be provided so as to be connected to each other. After the water supply from the water supply device is stopped, the flexible water supply hose is pushed by the atmospheric pressure and contracts, so that the water supply part can be closed.

Further, in the siphon water supply device according to the present invention, the water injection merging member may be provided directly connected to a water supply port of the water supply device. By directly attaching the water injection junction to the water inlet of the water supply equipment, the water supply hose part on the siphon side is also immersed in the water when the water supply equipment is immersed in the water in the flooded part, so that air inside the siphon suction part hose is immersed in the water. It does not remain. Therefore, when the priming water supply to the water supply hose in the water supply device is stopped, the process of pulling air in the water supply hose on the siphon suction side with the energy of the downstream priming water flowing down from the pipe top of the water supply hose can be omitted, Since the inside of the siphon suction hose is full as it is when the water supply device is stopped, the siphon action is started as it is.

Furthermore, in the siphon water supply device according to the present invention, the water supply device is characterized in that the water supply device is disposed in a water absorption portion different from a water immersion portion in which a water intake port of the water supply hose that operates a siphon is disposed. There may be.

Further, the siphon water supply device according to the present invention is characterized in that the siphon water supply device is provided with at least one or more air extruding members to be pushed out into the water supply hose and to push out residual air in the water supply hose. There may be. In other words, when laying a water supply hose on a ground with large undulations, it is impossible to make the piping gradient constant, and since the piping is made according to the undulating shape of the terrain, the phenomenon that air remains at high positions in the piping occurs I do. In this case, the air is compressed by the water pressure to narrow the cross section of the water supply hose, causing a reduction in the amount of water supply. In order to discharge this residual air from the discharge port on the downstream side, by pushing the air extrusion member to the downstream side with the water pressure of the water supply hose, the inside of the upstream water supply hose through which the air extrusion member has passed becomes full, The downstream side pushes downstream while receiving the residual air, and finally discharges the air from the discharge port, making the inner cross section of the water supply hose full or close to full, so that the water flow rate Can be increased.

Further, in the siphon water supply device according to the present invention, the air extrusion member is inserted into the water supply hose, or is larger than the cross section of the water supply hose before being sent out, the air extrusion member delivery portion, the water injection junction member or the water injection member. It may have a cross-sectional shape that is the same as or slightly smaller than the inner cross-section of the water-supply hose at the time of being inserted or sent into any of the water-supply hoses.

Furthermore, in the siphon water supply device according to the present invention, when the air extruding member is sent out, the diameter of the water supply port of the water supply device is equal to or less than the diameter of the water supply hose for supplying water to the downstream portion, or the water supply hose and the water supply hose on the siphon suction side. You may. When starting the water supply operation using the air extrusion member, even if the diameter of the water supply equipment is smaller than the diameter of the water supply hose, if the function of the water supply equipment has the ability to pump up to the required head, Since the water pressure generated by the accumulated water gradually increases, the air pushing member can be slowly but surely pushed down toward the discharge port on the downstream side. Thereby, the air remaining in the water supply hose on the downstream side of the air extrusion member is sequentially pushed and moved toward the discharge port along with the movement of the air extrusion member, and is eventually discharged from the discharge port, so that the inside of the water supply hose is discharged. The water will flow down as it approaches full water. When the head is 7 m or less, when the water supply device is stopped at this time, water absorption from the siphon water suction hose side of the water supply hose larger than the diameter of the water supply device starts, drains to the discharge port on the downstream side of the water supply hose, and the siphon action starts. It will be. In addition, when the head is 7 m or less, the water level of the flooded part is lowered by continuously operating the siphon, and when the head becomes 7 m or more, the water supply operation is continued by using the water supply device together. .

Furthermore, the present invention uses a siphon water supply method using the above-described siphon water supply device, which is used in a construction method for preventing a levee body from being broken due to an increase in water in a flooded pond such as a reservoir due to heavy rain. Yes, when approaching such as a typhoon is expected, by lowering the water level of the flood pond using the siphon water supply device, it is possible to increase the amount of water received by the flood pond during heavy rain and to prevent the breakwater from breaking. The present invention provides a siphon water supply method for a flooded pond such as a reservoir.

水 The method for water supply of the siphon water supply device has a feature that the siphon water supply device is used as a method for maintaining and managing a flooded pond. Taking the conventional method of managing the reservoir as an example, the structure of the reservoir is to block the water flowing into the flooded area by the embankment to form a flooded pond. A gutter is provided, and a high spout and a high spout channel are provided in a part of the embankment at a position lower than the top end of the embankment. The downspout is provided with a drainage hole for storing and draining water at an arbitrary height, and an open / close valve or a stopper is provided for opening / closing the hole (hereinafter referred to as an open / close valve). Name).

The reservoir manager can select the water level of the flooded pond only in stepwise height units, but it is supposed to operate this on-off valve to adjust it to an arbitrary height, but at the timing when the water level goes up and down However, since the on-off valves provided in each step must be operated sequentially until the water level reaches an arbitrary level, several people have to stick to the flood pond at all times. In areas where agricultural water is scarce, it is customary to always store as much water as possible in the reservoir to make it full. For this reason, when the water level reaches a high spout due to increased water due to rainfall, only excess water is drained from that portion to keep the water level constant.

Draining a large amount of water flowing into the flood basin within the size of the cross section of the high spout is good if the water level in the flood basin can be kept constant. Because it cannot receive water (water that temporarily flows in large quantities), it will overflow from high spouts. This water scours the embankment, causing the reservoir to collapse.

Attempting to open the downpipe on-off valve was underwater that could not be reached, or could not be opened due to aging or breakdown, and drainage work was attempted with a submersible pump. The problem was that the electricity bill would be enormous.

In order to solve this problem of huge fuel consumption and electricity consumption, a siphon type drainage device has been devised.However, in the conventional siphon drainage device, a drainage pipe is installed across the dike, and the configuration is A water inlet at the upstream end of the pipe, a discharge port at the downstream end, and a water inlet at the top of the drain pipe are provided. After closing the on-off valves provided at the water inlet and outlet of the siphon drainage device, 2. 2. Using a submersible pump or the like, fill the inside of the drain pipe with water from the water inlet provided at the top of the drain pipe. 3. When the water is full, close the opening of the water inlet. Thereafter, when the work of opening the on-off valves of the water intake port and the discharge port is performed, the siphon action is activated. However, in order to operate the on-off valves provided at the water intake and discharge ports, it is necessary for a person to approach that position. It was difficult. Also, the work of installing a water supply hose or the like extending from the submersible pump to the water inlet at the top of the pipe also required a large number of people.

サ イ Siphon drainage device of the present application does not have on-off valves at the water intake and discharge ports, so that no operation by these persons is required. In addition, since water injection into the drainage pipe is performed by installing a water injection merging member at an arbitrary position on the upstream side including the top of the pipe, simply turning on the power of the submersible pump will cause the drainage pipe to flow in a full state, Subsequently, it became possible to easily activate the siphon action by turning off the power of the submersible pump. It was possible to activate the siphon action by simply turning on and off a single worker without requiring a large number of workers, and to lower the water level in the flooded pond.

In addition, the siphon effect can be adjusted by lowering the water level of the flood pond to the height of the discharge port by draining work by setting the discharge port at an arbitrary position if the height is below the water level of the flood pond. Was. Due to this characteristic of the siphon action, the water level at the arbitrary height of the flood pond can be kept constant without falling.However, since the siphon drainage pipe is full, the water level of the flood pond rises due to the inflow of water. In such a case, the siphon function was activated again to start draining, and the work of lowering the water level to an arbitrary level was performed so that it was possible to maintain a constant height again. As a result, when heavy rain is expected, the water level is lowered to an arbitrary height in advance, thereby increasing the amount of water to be received.

(4) A means for discharging air from the discharge port by using an air pushing member in the water supply hose is adopted. When arranging the water supply hose, it is rarely possible to lay the water supply hose at a constant gradient, and the water supply hose is laid according to the undulation of the terrain. Therefore, air tends to accumulate at a high position of the water supply hose. In this case, the residual air is compressed and erodes the cross section of the water supply hose, reducing the amount of water supply. According to the present technology, after the residual air H is inserted into the water supply hose, an air extruding member having the same or slightly smaller cross section as the inner cross section of the water supply hose is pushed downstream by the water pressure generated by the water flow, and the air extruding member is moved by the water supply hose. By being flushed to the downstream side in a state of being full or almost full of the inner cross section of the water supply hose, the residual air in the water supply hose is pushed out from the discharge port so that the water has a water cross section as close as possible to the inner cross section of the water supply hose 1. This is a means that makes it possible to increase the amount of water to be supplied by flowing water. In a siphon water supply device using an air extrusion member, the diameter of the water supply port of the water supply device can be smaller than the diameter of a water supply hose for supplying water to a downstream portion, or the diameter of the water supply hose and the water supply hose on the siphon suction side.

The air pushing member is for pushing out the residual air H remaining in the water supply hose from the discharge port by flowing through the water supply hose.

The air extruding member should be larger than the inner cross section of the water supply hose before insertion, and should be the same as or slightly smaller than the inner cross section when inserted. For example, the air extruding member is made of a flexible material such as a sponge, and is larger than the inner cross section of the water supply hose before insertion or delivery, and is the same as the inner cross section of the water supply hose at the time of insertion or delivery. Alternatively, a form in which a hard core material is coated with a flexible material that can be dissolved in water (for example, toilet paper), and the surroundings are removed while flowing in a water supply hose. The air on the downstream side is pushed forward by the water pressure generated by the flow of water in the air push-out member water supply hose 1, moves forward, and is finally discharged from the discharge port together with the air. Note that the shape before insertion or delivery is not particularly limited as long as it is the same as or slightly smaller than the inner cross section of the water supply hose after insertion or delivery.

The form of the air push-out member is not particularly limited as long as it can advance inside the water supply hose while pushing out the air inside the water supply hose.

In addition, when pouring water into the water supply hose using a water supply device, the diameter of the water supply device becomes large, for example, when the diameter of the water supply device is Φ100 mm or more, a large generator of 200 V is generally required. Become. Therefore, by selecting a water supply device 2 having a small diameter, for example, Φ50 mm, the generator can use a small, lightweight, easily portable generator of 100 V. When the diameter of the water supply hose is far from that of the small diameter water supply device, and when the diameter of the water supply hose is large, the small diameter water supply device is connected to the small diameter water supply device in order to inject water into the water supply hose 1 by using a plurality of small diameter water supply devices simultaneously. It is preferable to provide a small-diameter merging connection fitting capable of connecting a plurality of second water supply hoses. By using such a small-diameter merging connection fitting, it is possible to connect to a plurality of water-supply devices having a smaller diameter than a water-supply hose, and to use a water-supply device with smaller power. In particular, in a siphon water supply device using an air extrusion member, at least one or more air extrusion members are used to extrude residual air in the water supply hose, using one or more water supply devices smaller in diameter than the water supply hose. In the case of sending out to a hose, a small-diameter water-supply device operated by a small-sized generator by using a small-diameter merging connection fitting that can simultaneously connect one or more of a plurality of second water-supply hoses of the small-diameter and feed water. Can be used to inject water into a large-diameter water supply hose using any number. It becomes possible to inject water into the water supply hose at the same time as one or a plurality of flow rates from the small-diameter water supply device. Note that the number of merging is not limited, and a larger number may be merged.

FIG. 1 is a diagram schematically illustrating a configuration of a siphon water supply device 100 according to the first embodiment. FIG. 2 is an explanatory diagram for explaining the function of the siphon water supply device 100. FIG. 3 is an explanatory diagram for explaining the conventional siphon water supply device 100. FIG. 4 is a diagram showing the opening / closing device 41 for adjusting the vaporization amount. FIG. 5 is a diagram schematically illustrating a configuration of a siphon water supply device 100 according to the second embodiment. FIG. 6 is a schematic diagram illustrating a form of the water injection merging member 30 of the siphon water supply device 100. FIG. 7 is a schematic diagram showing a mode in which the switching valve movement restricting member 35b is attached to the water injection merging member 30 of the siphon water supply device 100 according to the second embodiment. FIG. 8 is a schematic diagram showing a form in which a check valve 35a for an opening is attached to the water injection / merging member 30 of the siphon water supply device 100 according to the second embodiment. FIG. 9 is a diagram illustrating a flexible water supply hose 25 in the siphon water supply device 100 according to the second embodiment. FIG. 10 is a diagram showing another embodiment of a method for arranging the water injection / merging member 30 in the siphon water supply device 100 according to the second embodiment. FIG. 11 is a schematic diagram illustrating a state in which air remains in the water supply hose 10. FIG. 12 is a schematic diagram illustrating a state in which the air pushing member 50 is sent to the siphon water supply device 100 according to the third embodiment. FIG. 13 is a schematic diagram illustrating a configuration of the air push-out member delivery section 60. FIG. 14 is a schematic diagram showing a state in which one or more small-diameter water-supplying devices 20 are used to inject water into the water-supply hose 10 via the small-diameter merging fitting 89.

The above-described embodiments of the siphon water supply device 100 of the present invention and the water supply method using the siphon water supply device 100 will be described in detail with reference to the drawings. The embodiments and the drawings described below exemplify some of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations.

(1st Embodiment)
A siphon water supply device 100 according to the first embodiment is shown in FIG. Here, α in FIG. 1 indicates “head”, β indicates “head difference”, and γ indicates “cavity due to diagonal flow due to steep gradient and negative pressure phenomenon”. The siphon water supply device 100 according to the present invention and the siphon water supply method using the siphon water supply device 100 prevent a vaporization phenomenon caused by a negative pressure in the pipe of the water supply hose 10 due to the siphon action in the siphon water supply device using the siphon action. Or, it is provided with a vaporization amount adjustment opening / closing device 41 for reducing the amount. The opening / closing device 41 for adjusting the amount of vaporization causes a part of the water flowing in the water supply hose 10 to stay at a position equal to or lower than the water level of the upstream flooded portion 90 on the downstream side from the flooded portion 90 via the head 10b of the head. To prevent vaporization. Accordingly, it is possible to prevent the water supply hose 10 from being crushed or damaged due to the atmospheric pressure, which is an external pressure, in addition to the negative pressure phenomenon in the water supply hose 10 due to the siphon action.

The siphon water supply device 100 is a discharge port that is always opened at a position lower than the water surface of the flooded portion 90 from a flooded portion 90 such as a pool, a pond, a swamp, a river, or the like, which is an upstream area or a high water area, via a pipe top 10b of a head. The water supply hose 10 is provided with a material capable of maintaining a cross-sectional shape, in which the water supply hose 10a is disposed, and a water supply device 20 that is disposed in the flooded portion 90 and is connected to the water supply hose 10 to supply water.

水 The water supply hose 10 is a hard hose whose sectional shape is not easily deformed. Examples of the hose using a hard material include a suction hose and a hose such as hard polyethylene and vinyl chloride which are generally referred to.

サ イ The siphon water supply device 100 thus installed is activated as follows. As shown in FIG. 2A, the water level of the flooded portion 90 varies between 90b, 90c, and 90d. The water level 90d represents the highest water level at the top end of the wall of the flooded section 90 serving as the obstacle 1. When the water supply device 20 is operated to inject water into the water supply hose 10 and water starts flowing from the discharge port 10a when the water supply hose 10 is full, the power supply of the water supply device 20 is stopped and the water supply by the water supply device 20 is stopped. As a result of this operation, the water in the flooded section 90 is sucked into the water supply device 20 from the water supply device suction port 20a of the water supply device 20, and moves to the discharge port 10a through the water supply hose 10. A so-called siphon water supply operation is started. As shown in FIG. 2B, when the water supply device 20 becomes larger than the manufacturer's limit head height, water supply becomes impossible, and in the case of a siphon, the water supply device 20 stops when the limit head exceeds 7 m. However, when the water supply device 20 is added to the siphon and used together as in the present technology, the water supply device 20 fills the cavity generated at the pipe top 10b of the siphon action, so that the inside of the water supply hose 10 is connected with water. Become. By this action, the siphon action does not generate a cavity due to the vaporization phenomenon, so that the siphon action is maintained. When making a drainage plan using the siphon water supply device 100 developed this time, the starting method is divided into two types according to the water level at the start of the drainage work. That is, 1. If the water level of the flooding section 90 is low and exceeds the top of a natural dam or the like, but is close to the limit head published by the water supply equipment manufacturer, and the water supply amount of the water supply equipment 20 is too small to activate the siphon action, the air pushing member 50 is used. Is discharged into the water supply hose 10 to fill the flow rate in the water supply hose 10 as described above and to perform the drainage work by using both the siphon action and the water supply by the water supply device 20 to perform the drainage operation. The drainage work more than the function becomes possible. Also, 2. When the water level of the flooded section 90 is high and the head is 7 m or less, the water supply device 20 is started and an air pushing member 50 described later is sent out into the water supply hose 10. When the water supply hose 10 starts flowing down in a full state, the water supply device 20 is started. By shutting down and switching to siphon work only and operating drainage work, fuel consumption and maintenance costs can be significantly reduced. In any of the first and second cases, it is preferable to use a water injection merging member 30, which will be described later, in which water supply by the water supply device 20 and siphon water supply can be switched or used only by the power supply of the water supply device 20. Further, by using the air pushing member 50 for pushing out the residual air narrowing the water passage cross section in the water supply hose 10 to the discharge port 10a, by using the siphon action and the function of the conventional water supply device 20 together, the conventional drainage limit is achieved. It is possible to provide the siphon water supply device 100 in which the head and the drainage amount are greatly improved.

サ イ The siphon water supply device 100 manufactured as described above is activated as follows. The siphon water supply device 100 according to the first embodiment uses a water supply device 20 having a water supply amount enough to push out the air in the water supply hose 10 at a stretch. Preferably, the water supply diameter of the water supply device 20 is larger than the diameter of the water supply hose 10. Then, the water is supplied to the water-supply hose 10 by the water-supply device 20, and the water flows down to the low-region side. If this state is continued for a while, the remaining air in the water supply hose 10 is discharged from the discharge port 10a while the water is discharged from the discharge port 10a, so that the water supply state of the water supply hose 10 with the water flowing is maintained. You. Initially, water spouting from the discharge port 10a is mixed with air to discharge white water, but when the air in the water supply hose 10 is discharged and becomes full, the water changes to transparent water. Then, the siphon action in which water automatically flows into the water supply hose 10 starts to be activated. Then, when the air or the like in the water supply hose 10 is completely discharged from the discharge port 10a, the water supply between the water in the flooded section 90 in the high water level area and the discharge port 10a of the water supply hose 10 laid in the low area. The inside of the hose 10 is connected in a full state, and the operation state of the siphon action is completely maintained.

According to the siphon water supply device 100 configured as described above, when the head is 7 m or less, if the head is once ready and the water can be drained from the high water level flooded part 90 to the low area by the siphon action, Thereafter, the water in the flooded section 90 can be continuously sent to the discharge port 10a by the siphon action without requiring power. Even when the head exceeds 7 m, water supply can be maintained by using the water supply device 20 together.

The negative pressure generated in the water supply hose 10 after the siphon action is activated is such that the ratio of the length of the water supply hose 10 to the upstream water supply hose 10d on the flooded part 90 side from the pipe top 10b is "1" in order to secure a head difference. , The downstream water supply hose 10e downstream of the pipe top 10b is installed longer at a ratio of “2” or more. As shown in FIG. 3, the downstream water supply hose 110d is earlier than the upstream water supply hose 110d. Vaporization phenomenon γ easily occurs in the water supply hose 10 due to the negative pressure in 10e. In order to prevent damage such as crushing or cracking of the downstream water supply hose 10e due to the generation of negative pressure and the influence of atmospheric pressure, the downstream side is located downstream of the pipe top 10b of the siphon water supply device 100 and lower than the water level of the flooded section 90. The opening / closing device 41 for adjusting the vaporization amount is connected to the side water supply hose 10e. In particular, by adjusting the amount of vaporization caused by the negative pressure generated in the downstream water supply hose 10e, damage such as crushing or cracking of the downstream water supply hose 10e can be prevented. When the installation angle of the downstream water supply hose 10e is steep, the flow is particularly diagonal, and water flows only at the bottom of the inner cross section of the downstream water supply hose 10e. The parts other than water are the gas in which water was vaporized by the negative pressure. In other words, the siphon phenomenon stops when the air is sucked into the downstream side water supply hose 10e because the hose is crushed due to the application of the atmospheric pressure, which is an external pressure, and the cross section of the water passage is closed or a crack is generated. Becomes As in the second embodiment shown in FIG. 5, by gradually narrowing the water passage area of the vaporization amount adjustment opening / closing device 41, a part of the water flowing through the bottom of the downstream water supply hose 10e is temporarily opened and closed for vaporization amount adjustment. It can stay in the upstream part of the device 41. Thus, the amount of stagnation is gradually increased from the vaporization amount adjusting opening / closing device 41 to the upstream pipe top 10b so that the downstream water supply hose 10e flows to the pipe top 10b in a full state. Thereby, the generation of the mixed flow can be prevented, and the cavity due to the vaporization phenomenon can be almost eliminated. By eliminating the vaporized gas in the downstream water supply hose 10e and making the entire cross section a water flow, the influence of the external pressure of the atmospheric pressure can be reduced and the downstream water supply hose 10e can be prevented from being damaged. The purpose of the opening / closing device 41 for adjusting the vaporization amount is not the opening / closing device for adjusting the flow rate, which is generally referred to, but only a part of the jet flow flowing through the bottom generated in the steep downstream water supply hose 10e. The flow rate of the water discharged from the discharge port 10a of the water supply hose 10 is characterized in that it is a large-capacity flow rate which is almost the same as a state in which the inner surface of the water supply hose 10 having a gentle gradient is filled with water.

A valve or the like is conceivable as the opening / closing device 41 for adjusting the amount of vaporization. However, the conventional valve has a thick and large bulky shape because the holding plate 41d and the flange portion 41c that sandwich the sliding space 41i are separately formed. Therefore, it is preferable to adopt the following form. As shown in FIG. 4, an enclosing portion 41j enclosing the gate portion 41a, the gate portion 41a, and a sliding space 41i of the gate portion 41a, which surrounds the upper, lower, left, and right sides, and sandwiches the gate portion 41a from the upstream and downstream sides to form a running water A pair of holding plates 41d, 41d provided with a plurality of holes 41g around the hole 41b and the flowing water hole 41b and formed with a flange 41c, and a vertical movement bolt 41e for moving the gate portion 41a up and down in the holding plate 41d; It has. With such a structure, the hole 41g of the flange 41c provided in the opening / closing device 41 for adjusting the vaporization amount when connecting to the water supply hose 10 and the hole 41g provided in the flange member 41f provided at the end on the water supply hose 10 side And can be firmly fixed with the bolt nut 41h. The conventional spindle type opening / closing device can perform quick opening / closing work by using a power tool that rotates a bolt with a motor such as an impact on a screw portion. Further, the opening / closing device is rotated by a handle member suitable for the bolt to move a gate (water control plate) provided at a lower end thereof up and down to open and close a water passage portion of the opening / closing device to adjust a flow rate. The structure of the opening and closing device includes a cover member surrounding the upstream and downstream sides of the gate, upper and lower surfaces, and left and right side surfaces, and a flange portion for connecting to a flange portion of a pipe such as a water supply hose connected at an upstream portion and a downstream portion. Was provided separately. For this reason, the conventional opening / closing device has a thick structure with the entire opening / closing device being thick and heavy, which limits the transportation and work contents by human power. However, by adopting the vaporizing amount adjusting opening / closing device 41 according to the present invention, it is possible to omit the flange member for pipe connection which was separately provided in the related art, and it becomes compact as a whole because it becomes a flat type as a whole. This makes it possible to place a large number of units in narrow places during transportation and storage. In addition, because of this, weight reduction was achieved, and the range of manual transportation and installation work was widened.

(2nd Embodiment)
A siphon water supply device 100 according to the second embodiment is shown in FIG. FIG. 5 is a side view schematically showing the configuration of the siphon water supply device 100 according to the second embodiment. The siphon water supply device 100 according to the second embodiment mainly includes a water supply hose 10, a water supply junction member 30 provided in the middle of the water supply hose 10, and a vaporization amount adjustment opening / closing device 41. The vaporization amount adjusting device is the same as that of the first embodiment, and the description is omitted. The water supply hose 10 includes a first water supply hose 11 having an open end and sucking water by a siphon function, a second water supply hose 12 connected to a water supply device 20, and a third water supply hose 13 having a discharge port 10a. ing. The first water supply hose 11 and the second water supply hose 12 connected to the water supply device 20 at the tip are disposed in the water filling section 90, and the discharge port 10 a of the water supply hose 10 of the third water supply hose 13 is connected to the water surface of the water filling section 90. It is arranged outside the embankment which becomes the obstacle 1 at a lower position.

As shown in FIG. 6, the water injection merging member 30 includes a first opening 31, a second opening 32, and a third opening that are respectively connected to the first water hose 11, the second water hose 12, and the third water hose 13. And a unit 33. The water injection merging member 30 is formed in a substantially Y-shape such that the water passage between the first opening 31 and the second opening 32 has an acute angle. The ends of the openings (31 to 33) of the water injection junction member 30 have a connection function, for example, a flange or the like, and can be easily and firmly connected to the water supply hose 10.

切 替 A switching valve 35 is provided inside the confluence of the first opening 31 and the second opening 32. The structure of the switching valve 35 provided at the junction prevents the flow of water from the first opening 31 side from flowing into the second opening 32 side, and the flow from the second opening 32 side to the first side. This has the effect of preventing flow into the opening 31 side. In particular, when the extension of the water supply hose 10 to the downstream side connected to the third opening 33 is long, or when the water supply hose 10 is bent and resistance occurs in the flow, the phenomenon in which the flow stagnates due to the resistance may occur. Since water is generated and tends to flow to another route, this can be prevented, and water can be flown to the downstream discharge port 10a. When water is supplied using both the functions of the siphon and the water supply device 20, the switching valve 35 has an opening area corresponding to the respective flow rates at the junction between the two at the junction.

As shown in FIG. 7, a switching valve 35 provided inside the switching valve 35 for switching the direction of the flow is pushed and moved by the flow, so that one of the flow paths is not fully opened. A switching valve movement restricting member 35b for restricting the movement of the switching valve 35 in the middle of the valve moving range may be provided. The switching valve movement restricting member 35b is formed by projecting a bolt into the water injection / merging member 30 so as to abut the switching valve 35, and is provided at a plurality of locations to adjust the degree of protrusion of the bolt. The movement stop position of the switching valve 35 can be adjusted.

切 替 As for the method of switching the inflow of water from the first opening 31 or the second opening 32, the following method is also conceivable in addition to the above-described switching valve 35.

(1) For example, as shown in FIG. 8, an opening check valve 35 a having an opening / closing function may be separately provided at the ends of the first opening 31 and the second opening 32. By opening and closing the check valve for opening 35 a, the flow of water from the second opening 32 is prevented from flowing in the direction of the first opening 31, and is caused to flow in the direction of the third opening 33. When the inside of the water supply device 20 is stopped when the inside of the inside becomes full, the flow can be changed to the flow of the siphon from the first opening 31.

(2) Also, as shown in FIG. 9, a part or all of a flexible water supply hose 25 such as a sunny hose may be arranged between the water supply device 20 and the second opening 32. Thereby, when water injection into the water supply hose 10 is completed by the water supply device 20 and the water supply device 20 is stopped, the flexible water supply hose 25 is pressed down by the atmospheric pressure and the movement of the water in the water supply hose 25, and water is removed. Since the water does not pass through, water does not flow into the second water supply hose 12 connected to the water supply device 20 nor to the water supply hose 10 connected to the downstream discharge port 10a. However, since there is energy for the water in the water supply hose 10 to move in the direction of the discharge port, the siphon water-absorbing action is provided on the first water supply hose 11 side, which is not blocked by the water, and is capable of passing water. Will work.

Further, as a variation of the arrangement of the water injection merging member 30, as shown in FIG. 10A, the water injection merging member 30 may be directly connected to the water supply device 20 and provided. By directly attaching the water injection merging member 30 to the water supply device 20, the first water supply hose 11 on the siphon side is also immersed in water when the water supply device 20 is immersed in the water of the flooded section 90. The possibility that air remains in the water supply hose 11 can be reduced. Therefore, when the supply of the priming water into the third water supply hose 13 in the water supply device 20 is stopped, the process of pulling the air in the first water supply hose 11 on the siphon side by the energy flowing down the priming water can be omitted.

Further, as shown in FIG. 10B, the first water supply hose 11 may not be connected to the first opening 31 on the siphon water absorption side of the water injection / merging member 30. As described above, since the first water supply hose 11 on the siphon side is not connected to the first opening 31 of the water injection merging member 30, the water injection merging member 30 is also immersed when the water feeding device 20 is immersed in the water of the flooded part 90. Similarly, when immersed in water, when the water supply device 20 is stopped, the water in the flooded portion 90 starts to be sucked directly from the first opening 31 of the water injection merging member 30 by the siphon action, and the siphon action starts, and the siphon side starts. The step of discharging the air in the first water supply hose 11 to the downstream portion can be omitted. In addition, the water injection merging member 30 that joins the second water supply hose 12 on the water supply device 20 side and the water intake port 11a on the siphon side is such that the water supply port 11a on the siphon side is located below the second water supply hose 12 on the water supply device side. By arranging, there is an effect of preventing soil and the like flowing in the water supply port on the siphon side from flowing into the second water supply hose 12 on the water supply apparatus side during the siphon water supply operation.

サ イ Regarding the siphon water supply device 100 configured as described above, an installation method and a usage method will be described with reference to FIG. First, the water inlet 11a of the first water supply hose 11 is disposed in the flooded portion 90 with the water injection merging member 30 installed at any position of the entire length of the water supply hose 10, and the tip of the second water supply hose 12 is provided. The water supply device 20 connected to the water supply device is similarly disposed in the flooded portion 90. The third water supply hose 13 is disposed at a position where the discharge port 10 a is lower than the water surface of the flooded portion 90.

Next, a method for starting the siphon water supply device 100 according to the second embodiment will be described. The siphon water supply device 100 according to the second embodiment uses a water supply device 20 having a water supply amount enough to push out the air in the water supply hose 10 at a stretch. Preferably, the water supply diameter of the water supply device 20 is larger than the diameter of the water supply hose 10. Then, water is injected into the second opening 32 of the water injection unit 30 by the water supply device 20. Then, the water is rushed into the third water supply hose 13 via the water supply joining member 30, and flows down to the low area side. If this state is continued for a while, while the residual air in the water supply hose 10 is discharged together with the water from the discharge port 10a, the water supply hose 10 is maintained in a full state with the water flowing. At first, the water spouting from the discharge port 10a is mixed with air and white water is discharged, but when the water supply hose 10 becomes full, the water changes to transparent water. When this state can be confirmed, the water supply device 20 is stopped, and the injection of water into the third water supply hose 13 is stopped. Even if the injection of water stops, the water is continuously drawn to the earth from the discharge port 10a which is always open in the low area on the downstream side, so that the full water in the water supply hose 10 is discharged by the potential energy. The action of flowing out to 10a works. Due to the action of flowing to the downstream side, the air in the first water supply hose 11 is drawn to the downstream side, and the water is supplied from the water intake port 11a disposed in the flooded portion 90 in the high water level area. At the time when the air or the like in the water supply hose 10 is sucked into the water supply hose 10 and completely discharged from the discharge port 10a, the water in the flooded part 90 at the high water level and the water supply laid in the low area The inside of the water supply hose 10 between the hose 10 and the discharge port 10a is connected in a full state, and the operation state of the siphon action is completely maintained. When a water supply device 20 having a diameter larger than the diameter of the water supply hose 10 is used, the flow is branched into a plurality of portions, and the second water injection devices 30 of the respective water injection merging members 30 connected to the plurality of water supply hoses 10 are connected. The water can be connected to the second opening 32 to which the water supply hose 12 is connected to supply water, so that a plurality of siphon water supply devices 100 can be started or operated simultaneously.

According to the siphon water supply device 100 configured as described above, if the head difference is within 7 m, once the preparation is ready and the water can be drained from the high water level inundation part 90 to the low area by the siphon action, After that, the water in the flooded section 90 can be continuously flowed to the low area by the siphon action without requiring power. Further, even when the head becomes 7 m or more, it is possible to use the water supply device used for the siphon drainage work as it is and switch the operation to the combined use with the water supply device 20.

According to the siphon water supply device 100 according to the second embodiment, unlike the first embodiment, the problem of fuel consumption indispensable for the operation of the water supply device 20 that could not be solved in the first embodiment, the small size of the water supply device 20. The problem of maintenance for removing trash clogging the water inlet 20a is solved. That is, since the siphon water intake port 11a has a large diameter and does not have an obstacle such as an on-off valve unlike the water supply equipment water intake port 20a of the water supply apparatus 20, dust that is clogged in the small water supply equipment water intake port 20a of the water supply apparatus 20 remains as it is. The water is sucked into the water supply hose 10 and discharged to the discharge port 10a on the downstream side, so that clogging of dust is prevented and the removal work is not required. Since the water inlet 11a of the first water supply hose 11 was provided, the flow of the siphon passing through the inside of the water supply device 20 was significantly reduced. As a result, the flow of the siphon boosts the rotation of the motor of the water supply device, thereby further preventing the occurrence of an overcurrent caused by a decrease in the load of the motor acting on the water supply.

(Third embodiment)
The third embodiment is a technique for discharging residual air in the water supply hose 10 to fill the water supply hose 10 with water as much as possible, and is used in combination with the first and second embodiments described above. Technology.

The third embodiment is a means for discharging air from the discharge port 10a by using the air pushing member 50 in the water supply hose 10. When arranging the water supply hose 10, it is rare that the water supply hose 10 can be laid at a constant gradient, and as shown in FIG. Tends to accumulate. In this case, the residual air H is compressed and impairs the water flow section of the water supply hose 10, so that the amount of water supply is reduced. According to the present technology, after the residual air H is inserted into the water supply hose 10, the air extrusion member 50 having the same or slightly smaller cross section as the inner cross section of the water supply hose 10 is pushed downstream by the water pressure generated by the water flow, and the air extrusion member When 50 is flushed to the downstream side in a state of being full or almost full of the inner section of the water supply hose 10, the residual air in the water supply hose 10 is pushed out from the discharge port 10a, and the water is supplied to the inner section of the water supply hose 10. This is a means that makes it possible to increase the amount of water to be supplied by filling and flowing so that the cross section becomes as close as possible. In the siphon water supply device 100 using the air extruding member 50, the diameter of the water supply port of the water supply device is smaller than the diameter of the water supply hose for supplying water to the downstream portion, or the diameter of the water supply hose 10 and the water supply hose 10 on the siphon suction side. be able to.

The air pushing member 50 is for pushing out the residual air H remaining in the water supply hose 10 from the discharge port 10a by flowing through the water supply hose 10 as shown in FIG.

The air extruding member 50 may be larger than the inner cross section of the water supply hose 10 before insertion, and may be the same as or slightly smaller than the inner cross section by insertion. For example, the air extruding member 50 is formed of a flexible material such as a sponge, and is larger than the inner cross section of the water supply hose 10 before insertion or delivery, and is the same as the inner cross section of the water supply hose 10 at the time of insertion or delivery. Or a hard core material covered with a flexible material that can be dissolved in water (for example, toilet paper), and the surroundings are removed while flowing in the water supply hose 10. Can be Such an air pushing member 50 advances while pushing and collecting the air on the downstream side by the water pressure generated by the flow of water in the water supply hose 10, and is finally discharged from the discharge port 10a together with the air. The shape before insertion or delivery is not particularly limited as long as it is the same as or slightly smaller than the inner cross section of the water supply hose 10 after insertion or delivery.

形態 The shape of the air pushing member 50 is not particularly limited as long as it can advance inside the water supply hose 10 while pushing out the air inside the water supply hose 10.

In addition, when water of the flooded part 90 side is injected into the water supply hose 10 using the water supply device 20, when the diameter of the water supply device 20 becomes large, for example, when the diameter is Φ100 mm or more, a large power generation of 200 V is generally performed. Machine is required. Therefore, as shown in FIG. 14, by selecting a water supply device 20 on the water injection side having a small diameter, for example, a diameter of Φ50 mm, the generator uses a small, lightweight, easily portable generator of 100 V. can do. When the diameter of the water supply hose 10 is far from the small diameter water supply device 20 and the diameter is large, a plurality of the small diameter water supply devices 20 are simultaneously used to pour water into the water supply hose 10. It is preferable to provide a small-diameter merging connection fitting 89 capable of connecting a plurality of small-diameter second water supply hoses 12a. By using such a small-diameter merging connection fitting 89, a plurality of water-supplying devices 20 having a smaller diameter than the water-supplying hose 10 can be connected, and the water-supplying device 20 with smaller power can be used. In particular, in the siphon water supply device 100 using the air push-out member 50, at least one or more air push-out members 50 for pushing out the residual air in the water feed hose 10 are connected to the water feeding device 20 having a smaller diameter than the water feed hose 10 by one. In the case of using more than one unit and sending it out to the water supply hose 10, the small-diameter second water supply hose 12 a can be combined with one or more units at the same time by using a small-diameter merging connection fitting 89 that can supply water to a small-sized generator. Water can be injected into the large-diameter water supply hose 10 by using an arbitrary number of small-diameter water supply devices that are operated. The flow from the small-diameter water supply device 20 can be simultaneously injected into the water supply hose 10 as one or more flow rates. Although FIG. 14 shows a bifurcated one, the number of branches is not limited, and the number of branches may be larger.

The present invention is not limited to the above-described embodiments, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

As shown in the above-described embodiment, the present invention can be used as a device for safely, inexpensively, and efficiently draining water from a storage section such as a river, a lake, a sediment dam, or a glacial lake.

DESCRIPTION OF SYMBOLS 10 ... Water supply hose, 10a ... Discharge port, 10b ... Pipe top part, 10d ... Upstream water supply hose, 10e ... Downstream water supply hose, 11 ... 1st water supply hose, 11a ... Water absorption port, 12 ... 2nd water supply hose, 12a ... Small-diameter second water supply hose, 13 ... third water supply hose, 20 ... water supply equipment, 20a ... water supply equipment water intake, 25 ... water supply hose, 30 ... water injection junction member, 31 ... first opening, 32 ... second opening Reference numeral 33, third opening, 35 switching valve, 35a check valve for opening, 35b switching valve movement restricting member, 41 opening / closing device for vaporization amount adjustment, 41a gate unit, 41b hole for flowing water 41c ... Flange, 41d ... Nipping plate, 41e ... Vertical movement bolt, 41f ... Flange member, 41g ... Hole, 41h ... Bolt nut, 41i ... Sliding space, 41j ... Part, 50 ... Air extrusion member, 60 ... Air Extrusion section Delivery unit, 70: holding member, 85: air extrusion member delivery device, 88: clamping member, 89: small-diameter merging connection fitting, 90: flooded portion, 90d: water level, α: head, β: head difference, γ: Cavity due to diagonal flow due to steep slope and negative pressure phenomenon, 100 ... siphon water supply device

Claims (13)

1. A siphon water supply device equipped with a vaporization amount adjustment opening / closing device to prevent or reduce the vaporization phenomenon generated by the negative pressure in the water supply hose due to the siphon action, and the upstream part on the downstream side from the flooded part through the top of the lifting pipe A siphon water supply device comprising a vaporization amount adjustment opening / closing device for retaining a part of water flowing in the water supply hose at a position equal to or lower than the water level of the flooded portion.
2. The opening / closing device for adjusting the amount of vaporized water includes a hole for flowing water and a gate portion as an opening / closing portion for the hole for flowing water, a surrounding portion surrounding the upper, lower, left and right including the gate and a sliding space for the gate portion, a hole for flowing water. A pair of sandwiching plates having a flange formed with holes around the hole for flowing water, and a vertical movement for vertically moving the gate in the sandwiching portion and the sandwiching plate. The siphon water supply device according to claim 1, further comprising a bolt.
3. The opening and closing device for adjusting the amount of vaporization provided in the siphon water supply device is a sliding space for the gate portion, which has been conventionally formed of separate members, in order to make the thickness in the upstream and downstream directions in which the respective members are stacked as small as possible. The flange portion is provided on a sandwiching plate sandwiching the above, and a pair of sandwiching plates are provided, and each member such as a gate portion is made of a plate material, and each of the members is formed thin by stacking the plate material. A siphon water supply device as described.
4. The discharge port of the water supply hose is a water supply hose made of a material capable of holding a cross-sectional shape which is always opened and arranged,
   The water supply hose connected to the water supply device arranged in the flooded part is connected to a water injection junction member having a flow direction switching valve at least in whole or in part by a flexible water supply hose, and is connected to the water supply hose. Water supply equipment to join,
   In a siphon water supply device comprising:
   If the drainage work progresses and the water level in the upstream flooded area drops and the head exceeds approximately 7 m, or if the topographical head difference is large enough to cause vaporization in the water supply hose, It is possible to maintain a stable siphon operation by operating a vaporization amount adjustment switchgear to prevent or eliminate cavities caused by vaporization due to negative pressure at the pipe top in siphon water supply work. According to a synergistic effect of the siphon and the water supply equipment, the water can be supplied in excess of the theoretical limit head height and water supply amount of the siphon, and the limit head height and drainage amount of the water supply equipment. 4. The siphon water supply device according to any one of 3.
5. When the head is approximately 7 m or less, the water supply device is activated to start the siphon action, water is injected into the water supply hose, and the water supply device is stopped when the water supply hose is almost fully filled. It is possible to operate the flow in the water supply hose by a water supply operation using a siphon,
   When the head is more than about 7 m, it is possible to add a water supply equipment water supply operation for preventing or eliminating a hollow portion generated due to a vaporization phenomenon caused by a negative pressure at the pipe top in the siphon water supply operation. Due to the synergistic effect of the water supply equipment, the siphon theoretical limit head height and water transfer amount, and since it becomes possible to transmit water beyond the limit head height and drainage amount of the water supply equipment,
   The siphon water supply device according to any one of claims 1 to 4, wherein a water supply operation is performed by switching or simultaneously using a water supply method by turning on and off a power supply of the water supply device at a height of 7 m as a boundary.
6. The water supply hose has a first opening connected to the water supply hose that absorbs water from the water filling part by a siphon action, and a water supply hose connected to the water supply equipment disposed in the water storage part. A second opening connected to the first opening and a third opening connected to the water supply hose for supplying water coming from the second opening to the downstream. Equipped with a water injection merging member,
   In the work of switching the direction of flow when the switching valve is pushed by the water flow to move and switch the flow direction, the water injection junction member limits the moving range of the switching valve so that the first opening or the second opening is not fully opened. The siphon water supply device according to any one of claims 1 to 5, further comprising a switching valve movement stopping member that stops the switching valve.
7. In order to switch the direction of the flow of water from the first opening and the direction of the flow of water from the second opening, the water injection junction member has an opening for the opening in the first opening and the second opening. The siphon water supply device according to claim 6, further comprising a check valve.
8. 8. The siphon water supply device according to claim 6, wherein the water injection junction member is directly connected to a water supply port of the water supply device. 9.
9. 9. A device according to any one of the preceding claims, comprising at least one or more air push-out members to be pushed into the water supply hose and to push out residual air in the water supply hose. Siphon water supply.
10. The at least one air extruding member is sent out into the water supply hose using a water supply device to push out residual air in the water supply hose, and the air extrusion member is inserted into the water supply hose. Or, before being delivered, a section that is larger than the inside section of the water supply hose, is the same as or slightly smaller than the inside section of the water supply hose at the time of being inserted or inserted into any of the water injection junction member or the inside of the water supply hose. The siphon water supply device according to claim 9, having a shape.
11. In the siphon water supply device using the air extruding member, the diameter or the water supply of the water supply port of the water supply device for sending out at least one or more air extrusion members using a water supply device to push out residual air in the water supply hose. The siphon water supply device according to claim 9 or 10, wherein a diameter of the water supply hose connected to the device is equal to or less than a diameter of a water supply hose for supplying water to a downstream portion or a water supply hose on a siphon suction side.
12. In the siphon water supply device using the air extruding member, at least one or more air extruding members for extruding residual air in the water supply hose are supplied with a water supply hose or a water supply hose and a water supply hose having a diameter equal to or less than a diameter of a water supply hose on a siphon water suction side. When using a water supply hose connected to the diameter of the equipment for delivery, use one or more of the water inlets of the water supply hose connected to the water supply hose at the same time to use a connection fitting that allows water injection. The siphon water supply device according to claim 11, wherein:
13. The siphon water supply method using the siphon water supply device according to any one of claims 6 to 12, wherein a disposition position of a discharge port of a hard water supply hose connected to the third opening is higher than a water level of the flooded part. When provided at a low point, the flexible water supply hose is provided downstream of the discharge port of the rigid water supply hose connected to the third opening, and the water supply from the flooded portion to the first opening is provided. A water supply method, wherein water flowing in the hose by a siphon action flows into the flexible water supply hose through the third opening.
    
    
    

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