JP3665897B2 - Siphoning water supply device and its water flow control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water supply device by a siphon action and a water flow control device for moving water accumulated on the upstream side when an obstacle is provided to block the river in a river cut-off work or the like.
[0002]
[Prior art]
When constructing rivers, such as bridge girder and dam, etc., deadlines are set up with obstacles in the direction crossing the river upstream and downstream of the construction site. A water reservoir is provided on the upstream side, and the water accumulated here is generally generated by an engine generator, and a submersible pump is driven to flow downstream through a hose.
[0003]
The applicant developed a water pump in Japanese Patent No. 3099227, and after the water supply to the downstream side is stabilized by the water pump, the water pump is stopped and water supply is continued by siphon action, which is generated by the engine generator. the CO ₂ and noise pollution to prevent that are performed water was reduced power consumption.
[0004]
[Problems to be solved by the invention]
However, in river construction, water supply may be stopped or restarted depending on the progress of the construction.
[0005]
In such an opportunity, the following problems occurred in the conventional water supply method.
[0006]
1. When the drainage capacity of the water supply pump is small or when the difference in water supply height is large, the cross section of the water supply pipe is not filled with water. As a result, an air reservoir is formed in the water supply pipe and air remains, and the amount of water supplied by the siphon action is not sufficient.
[0007]
To solve this problem, when the on-off valve in the downstream portion of the water pipe is temporarily closed, water is filled from the lower part of the water pipe, so that air is trapped in the upper part of the water pipe and is not completely eliminated.
[0008]
2.Since the amount of water delivered by the siphon action cannot be adjusted, if the amount of water delivered by the siphon action is too large compared to the amount of water flowing into the upstream reservoir, the water level in the sump will drop and air will be sucked into the water pipe And the siphon action is stopped.
[0009]
3. Moreover, when water supply is stopped urgently, the work is difficult because the water pump is lifted from the water surface and air is introduced into the water pipe.
[0010]
The present invention has been made in view of the above circumstances, and an object of the present invention is to facilitate the generation of a water flow into a water pipe by a siphon action, and to easily stop and restart the water feed. And providing a water flow control device thereof.
[0011]
[Means for Solving the Problems]
The invention of claim 1 is provided with a branched water absorption passage immersed in an upstream water reservoir and connected to a water supply pipe. After the water supply means is driven to supply water to the water supply pipe, the water supply means is stopped and the siphon action is stopped. A water supply device with a siphon action that absorbs water from the branched water intake passage and supplies water downstream.
A water flow control device is provided in the water pipe, and an air intake / exhaust section that discharges air in the water pipe at the start of water supply and sucks outside air when the water supply is stopped and a flow rate adjustment section that adjusts the amount of water passing through the water pipe is provided. It has the characteristics.
[0012]
More specific examples of the water supply means include a submersible pump and an engine pump.
[0013]
The flow rate adjusting part of the invention of claim 2 is characterized in that the flow rate is adjusted according to the water level of the water reservoir part in which the branched water absorption channel is immersed.
[0014]
The invention of claim 3 is a water flow control device that is attached to a water supply device by siphon action and controls the generation and flow stop and restart of water flow,
A running water unit connected to the water pipe,
An air reservoir provided at an upper portion of the water flow portion and communicating with the water flow portion;
An air intake / exhaust unit that is provided in the air reservoir and discharges air in the water supply pipe collected in the air reservoir when starting water supply, and sucks outside air when water supply is stopped;
It is characterized in that it is provided with a flow rate adjusting unit for adjusting the amount of water passing through the water flow unit or the water pipe.
[0015]
The flow rate adjusting part of the invention of claim 4 is constituted by a flow valve that opens and closes the flowing water part, and the open area of the flowing water part is automatically adjusted according to the water level of the water reservoir part in which the branched water absorption path is immersed. Has characteristics.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The water feeder 10 of the 1st Example which concerns on Claims 1 and 2 is demonstrated with reference to FIGS. 1-2.
First, in FIG. 1, a first water reservoir 12 is provided on one side, for example, the upstream side of an obstacle, for example, a river cut-off portion 11, and the water that has flowed down is stored. A water reservoir 13 having a lower water level than that of the first water reservoir 12 is provided on the other side, for example, the downstream side, of the cutoff part 11.
[0017]
The water supply pipe 14 has a central portion located above the obstacle, for example, the cut-off portion 11, and a submersible pump 21 immersed in the first water reservoir 12 is connected to the lower end of the upstream side 14 a. Further, the lower end of the downstream side 14 b is immersed in the water storage unit 13. Further, a valve 15 for opening and closing the water supply pipe 14 is provided on the downstream side 14b.
[0018]
An example of the submersible pump 20 is disclosed in Japanese Patent No. 3099227 as shown in FIG. 1. The discharge side 21 a of the submersible pump 21 is connected to the upstream side 14 a of the water pipe 14, and the installed power line Or it drives suitably with an engine type generator.
[0019]
Further, a branch water absorption path 22 is formed so as to surround the submersible pump 21 and the discharge side 21a. The branched water absorption path 22 communicates with the water supply pipe 14 through a plurality of communication holes 23 formed on the discharge side 21a. A plurality of intake valves 22a are provided at the bottom. The suction valve 22a prevents water from being discharged from the branched water intake path 22 to the bottom when the submersible pump 21 is driven.
[0020]
Next, the water flow control device 30 according to claims 3 and 4 will be described. The water flow control device 30 is connected to the upper end of the water pipe 14. In the present embodiment, it is attached at the highest position in the middle of the water supply pipe 14.
[0021]
The flowing water part 31 constitutes a part of the water supply path, and both ends thereof are connected to the water supply pipe 14. The flowing water portion 31 is fixed at an appropriate place via a pedestal 32. The pedestal 32 is preferably provided with means for correcting an inclination caused by a twist of the water supply pipe 14 or the like.
[0022]
The air reservoir 33 is formed integrally with the upper part of the flowing water portion 31 and communicates with the water supply pipe 14 via the communication hole 34. The air reservoir 33 is provided with an air valve 35 as an air intake / exhaust portion at the top. The air valve 35 has a well-known configuration and can be manually opened and closed by operating the lever 35a.
[0023]
As a second embodiment of the air intake / exhaust portion, as shown in FIG. 2, a small-diameter pipe 36 is connected, and the other end is immersed in the water of the first water reservoir 12.
[0024]
The air valve 35 is not limited to the above-described configuration, and air that has been gathered into the air reservoir 33 and has increased in pressure automatically is discharged to the outside, and the pressure in the air reservoir 33 is higher than atmospheric pressure. Even if it falls, you may comprise so that external air may not penetrate | invade.
[0025]
In addition, if a viewing window using a glass window or the like is provided in the air reservoir 33, the internal water level can be recognized, which is convenient because the start time of the siphon action can be confirmed.
[0026]
Although not shown, a float and a valve linked to the float may be provided in the air reservoir 33, and the valve may be closed by the buoyancy of the float as the water level rises.
[0027]
The flow rate adjusting unit 37 adjusts the flow rate by adjusting the open area of the flowing water unit 31, and in this embodiment, the flow rate valve 40 connected to the screw 39 is moved up and down by operating the handle 38. ing.
[0028]
In the present embodiment, the flow rate adjusting unit 37 is provided integrally with the flowing water unit 31, but the present invention is not limited to this, and the flow rate adjusting unit 37 may be provided in the water supply pipe 14 at a site away from the flowing water unit 31.
[0029]
Next, the operation of the above configuration will be described.
(1) First, the flow valve 40 and the air valve 35 of the flow controller 37 are opened.
[0030]
(2) The submersible pump 21 is driven. Water is sent to the water pipe 14 and filled from the downstream side 14b. When the water supply capacity is large, the air in the water supply pipe 14 is caught in the flow and discharged. When the water supply capacity is small, when the air valve 15 is closed, the air remaining in the pipe is sequentially expelled to the upper part, collected in the air reservoir 33, and discharged from the air valve 35.
[0031]
If the valve 15 on the downstream side 14b of the water supply pipe 14 is closed and the submersible pump 21 is driven, the discharge of air is further promoted.
[0032]
(3) When the air in the water supply pipe 14 is completely discharged, the water level rises to the inside of the air reservoir 33, and water is ejected from the air valve 35. Therefore, the air discharge valve 35 is closed.
[0033]
In the second embodiment, the ejected water is guided to the first water reservoir 12 through the pipe 36. Since the tip of the pipe 36 is immersed in the first water reservoir 12, the air in the pipe 36 is discharged and the interior is filled with water, and the pipe 36 is automatically closed.
[0034]
(4) When the valve 15 on the downstream side 14b of the water supply pipe 14 is opened, water supply is started.
The submersible pump 20 is stopped here. Since the water supply pipe 14 is filled with water, even if the submersible pump 20 is stopped, a siphon action occurs due to a drop between the upstream side and the downstream side, and water supply is continued.
[0035]
The amount of water supplied is controlled so that the water level of the first water reservoir 12 is kept constant by moving the flow valve 40 of the flow controller 37 up and down.
[0036]
In addition, while providing the sensor 12a which detects the water level of the 1st water sump part 12, the handle | steering-wheel 38 is rotated forward / reversely by a motor, the flow valve 40 is moved up and down according to the signal of this sensor, and the 1st water sump part It is convenient to keep the twelve water levels constant.
[0037]
(5) Water supply may be interrupted for work reasons.
In this case, the flow valve 40 of the flow controller 37 is gradually closed. Although the water supply is stopped, the inside of the water supply pipe 14 is maintained in a state filled with water. Therefore, when resuming the water supply, the water supply is started as soon as the flow valve 40 is opened. Therefore, it is not necessary to drive the submersible pump 20 to start water supply.
[0038]
(6) When changing the position of the water supply pipe 14 or withdrawing the water supply equipment, if the air valve 35 is opened and air is introduced into the water supply pipe 14, the water inside is immediately discharged. If the water pipe 14 is moved, the work can be done easily.
[0039]
In the second embodiment, the lower end of the pipe 36 may be lifted upward from the water surface.
[0040]
(7) When water supply by siphon action is started again, steps (1) to (5) may be performed.
[0041]
According to the said Example, there exist the following effects.
a. Since the air in the water pipe can be reliably removed regardless of the drainage capacity of the water pump, the size of the diameter of the water pipe 14, or the height difference of the water pipe, water can be reliably fed by the siphon action.
[0042]
b. Since the water supply amount can be adjusted by moving the flow rate valve 40 of the flow rate adjustment unit 37 up and down, the water level of the upstream water reservoir can be kept constant.
[0043]
c. By controlling the flow rate valve 40 of the flow rate adjustment unit 37, the water supply can be easily interrupted and resumed.
[0044]
d. If the air discharge valve 35 is opened, the water supply can be stopped urgently, and the water in the water supply pipe 14 is immediately discharged.
[0045]
FIG. 3 shows a water supply device 50 of the third embodiment. The difference from the first embodiment is that the submersible pump 21 and the branch water absorption path 52 are provided side by side using the branch water absorption device 51.
[0046]
First, the branched water absorption device 51 will be described.
In this branch water absorption device 51, a branch water absorption path 52 and a discharge path 53 are provided side by side, and one end portions thereof are combined to form a communication portion 51 a, and this communication portion 51 a is connected to the water supply pipe 14. ing.
[0047]
A connecting portion 54 is provided at the other end of the discharge passage 53, and the submersible pump 21 is detachably connected thereto. Further, the discharge passage 53 is provided with a discharge valve 55 that allows water discharged from the submersible pump 21 to flow and prevents water flowing backward from the water supply pipe 14. Further, the discharge passage 53 is closed to allow water and air to flow. A shut-off portion 56 for blocking is provided.
[0048]
Further, a water absorption valve 57 is provided in the branch water absorption path 52. This water intake valve 57 maintains a closed state when the submersible pump 21 supplies water to the water supply pipe 14 and opens when supplying water by a siphon action.
[0049]
In this third embodiment, when the shut-off portion 56 is opened and the submersible pump 21 is driven, a water flow is formed in the water supply pipe 14 in the same manner as described above. Water supply by siphon action is formed. Therefore, if the cut-off portion 56 is closed, air will not enter the water supply pipe 14. Therefore, the submersible pump 21 can be removed from the branch water absorption device 51.
[0050]
In addition, when the discharge path 53 is immersed in water, since there is no possibility that air may enter into the water supply pipe 14, the cut-off portion 56 is not necessarily required, and at least the discharge valve 55 for preventing water from flowing out is provided. If provided, the submersible pump 21 can be removed.
[0051]
According to the third embodiment, the submersible pump 21 can be removed after the water supply by the siphon action is generated. Therefore, in the case of construction for supplying water from a plurality of water reservoirs, the submersible pump 21 is It is possible to divert, and it is not necessary to prepare the submersible pumps 21 by the number of the water reservoirs, and there is an effect that the equipment cost can be reduced.
[0052]
FIG. 4 shows a water supply device 60 of the fourth embodiment. The difference from the third embodiment is that the branched water absorption device 51 is immersed in the first water reservoir 12 serving as a water source for water supply and connected to the water supply pipe 14.
[0053]
The submersible pump 21 is immersed in a second water reservoir 61 that is different from the first water reservoir 12. The extension pipe 62 is connected to the discharge side of the submersible pump 21, and the end thereof is connected to the connecting portion 54 of the discharge path 53. Thereby, the submersible pump 21 is connected to the water supply pipe 14.
[0054]
Also in this water supply device 60, if the submersible pump 21 is driven continuously, the air in the water supply pipe 14 can be eliminated and filled with water as described above. Therefore, if the submersible pump 21 is stopped, water supply is started by the siphon action, and the water in the first water reservoir 12 is supplied to the downstream side through the branched water intake path 52.
[0055]
If water supply is started by the siphon action, the underwater pump 21 can be removed by tightening the shut-off portion 56.
[0056]
According to the water supply device 60 of the fourth embodiment, in addition to the effects of the first embodiment, when water reservoirs are formed at a plurality of locations and these are supplied downstream by siphon action, The submersible pump 21 only has to be immersed in the second water reservoir 61 that is convenient for installation, etc., so that it is easy to transport the heavy-weight submersible pump 21 and the power source, and the water source to be supplied with water is branched water absorption. Since a relatively lightweight object such as the road 52 may be transported, it is convenient when constructing a plurality of water sources.
[0057]
In addition, the necessary number of submersible pumps 21 can be reduced to reduce the equipment cost, and the transporting labor can be remarkably simplified.
[0058]
FIG. 5 shows an embodiment in which water pipes having different diameters are connected. Joints 63, 64 and 65 having connecting screws and having different diameters are prepared, and screw connections can be made to the respective connecting portions. And a thick pipe, for example, a branch water absorption device 51 and the water supply pipe 14 are connected to each other.
[0059]
【The invention's effect】
The invention of claim 1 includes a branched water absorption path immersed in an upstream water reservoir and connected to a water pipe. For example, after driving a submersible pump to feed water to the water pipe, the submersible pump is stopped and the siphon is stopped. It is a water supply method by a siphon action that absorbs water from the branched water absorption path and supplies water downstream.
Since the water flow control device is provided in the water supply pipe, the air in the water supply pipe is discharged at the start of water supply, the air intake / exhaust part for sucking outside air when the water supply is stopped, and the flow rate adjusting part for adjusting the water amount passing through the water supply pipe Thus, the water supply by the siphon action can be surely performed, and the excellent effect that the interruption and resumption of the water supply can be easily performed is achieved.
[0060]
Since the flow rate adjusting part of the invention of claim 2 is configured to adjust the flow rate according to the water level of the water reservoir part in which the branched water absorption channel is immersed, the water level of the upstream water reservoir part is kept constant. The effect that it can be done is produced.
[0061]
The invention of claim 3 is a water flow control device that is attached to a water supply device by siphon action and controls the generation and flow stop and restart of water flow,
A running water unit connected to the water pipe,
An air reservoir provided at an upper portion of the water flow portion and communicating with the water flow portion;
An air intake / exhaust unit that is provided in the air reservoir and discharges air in the water supply pipe collected in the air reservoir when starting water supply, and sucks outside air when water supply is stopped;
Since the flow rate adjusting unit that adjusts the amount of water passing through the water flow unit or the water supply pipe is provided, there is an effect that the generation of the water flow and the stop and restart of the water supply can be easily and reliably performed by the siphon action.
[0062]
The flow rate adjustment part of the invention of claim 4 is constituted by a flow valve that opens and closes the water flow part, and automatically adjusts the open area of the water flow part according to the water level of the water reservoir part in which the branch water absorption path is immersed. There is an effect that the water level of the upstream water reservoir can be kept constant.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of the present invention.
FIG. 2 is a front view showing a second embodiment of the present invention.
FIG. 3 is a front view showing a third embodiment of the present invention.
FIG. 4 is a front view showing a fourth embodiment of the present invention.
FIG. 5 is a view showing an embodiment in which water pipes having different diameters are connected.
[Explanation of symbols]
10 Water supply device 11 Deadline (obstacle)
12 First water reservoir 14 Water supply pipe 21 Submersible pump 22 Branch water intake passage 30 Water flow control device 31 Water flow portion 33 Air reservoir portion 34 Communication hole 35 Air valve (air intake / exhaust portion)
36 Pipe (Air intake / exhaust section)
37 Flow control unit 40 Flow valve 50 Water supply device 51 Branch water absorption device 52 Branch water absorption passage 53 Discharge passage 54 Connection portion 55 Discharge valve 56 Cutoff portion 57 Water absorption valve 60 Water supply device 61 Second water reservoir 62 Extension pipe

Claims (4)

A branched water absorption passage immersed in an upstream water reservoir and connected to a water supply pipe is provided, and after the water supply means is driven to supply water to the water supply pipe, the water supply means is stopped and water is absorbed from the branch water absorption path by siphon action. And a water supply device by siphon action that supplies water downstream,
A water flow control device is provided in the water pipe, and an air intake / exhaust section that discharges air in the water pipe at the start of water supply and sucks outside air when the water supply is stopped and a flow rate adjustment section that adjusts the amount of water passing through the water pipe is provided. A water supply device with a siphon action characterized by. The siphoning water supply device according to claim 1, wherein the flow rate adjusting unit is configured to adjust the flow rate according to a water level of a water reservoir in which the branch water absorption channel is immersed. A water flow control device that is attached to a water supply device by siphon action and controls the generation and flow stop and restart of water flow,
A running water connected to the water pipe,
An air reservoir provided at an upper portion of the water flow portion and communicating with the water flow portion;
An air intake / exhaust unit that is provided in the air reservoir and discharges air in the water supply pipe collected in the air reservoir when starting water supply, and sucks outside air when water supply is stopped;
A water flow control device comprising a flow rate adjusting unit for adjusting the amount of water passing through the water flow unit or the water pipe. The flow rate adjusting unit is constituted by a flow rate valve that opens and closes the flowing water portion, and the open area of the flowing water portion is automatically adjusted according to the water level of the water reservoir portion in which the branched water absorption path is immersed. The water flow control device described.

Images