JPS60219313A - Full automatic controlling device for bagform weir - Google Patents

Abstract

PURPOSE:To cause automatical rise and fall of a weir, by a method wherein a control chamber for a double bagform weir is installed to a water flow passage running from upper stream to down stream, an air and water feeding device is communicated with the control chamber, and a syphon, an exhaust gas tank and an impermeable plate are mounted to the control chamber. CONSTITUTION:A bagform weir, not shown, comprises an inner tube and an outer tube, and included a control device chamber 5, located on a water flow passage extending from the upper stream to the down stream, and an air feed device 6 for feeding the air and water to the control device chamber 5. The control chamber 5 has a syphon 10 on the downstream side, an exhaust gas tank 11 and a control tank 12 in the vicinity of a rising water level, and a reverse air flow preventing tank 13, a reverse water flow preventing tank 14, and a water feed tank 15 in the vicinity of a weir height water level. Further, an impermeable plate 9 having a water flow port on the downstream side is installed, and a mud stopping plate 47 and a mud discharge pipe 42 are installed. This enables a bagform weir to automatically fall down during flood and rise during flood recession without installation of any machine.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fully automatic control device for a bag weir.

(Prior art) So-called bag-shaped weirs, which are made by injecting water or air into a bag-shaped body such as rubber-coated cloth installed across a river to raise it up, or drain it and collapse it, have a simple structure and are easy to paint. Since it does not require a sluice gate, it has recently been widely used in place of a steel sluice gate.This system using a bag-shaped weir can respond to increases and decreases in river flow rate without any power and without any manual operation. It is configured to automatically repeat lodging and raising, and to always maintain a constant water level above the layer during raising, regardless of the flow rate.◇ This operating device has already been put into practical use. After repeated improvements, the invention has been filed in Japanese Patent Application No. 59-2.7569, etc., and although the conventional problems have been solved to some extent by this invention, it has been found that new problems may arise.

In other words, (1) the upper end of the exhaust pipe is submerged in water when standing up; therefore, if exhaust is started before the exhaust pipe is exposed to the air, water may enter the exhaust system, resulting in incomplete (2) Since the above invention does not have a safety device, even if a part that is prone to failure is damaged, the weir may not be completely collapsed. (3) The mechanism became too complex because the emphasis was placed on cleaning the sediment inside the device.

◎ (Objective of the invention) Therefore, this invention solves these new problems by exposing the exhaust pipe to the air.
Adding a separate safety device eliminates excessive equipment, prevents dirt from entering the device, eliminates the system required to clean the device, and creates a safe and simple fully automatic control system for the bag weir. 0 (Structure of the Invention) The present invention is intended to solve the conventional problems. It consists of a control equipment room that opens into the river and the downstream river to form a flow channel, and an air supply system that communicates with the control equipment room and has an air tank and a water storage tank, and the control room is connected to the weir body. A siphon installed on the downstream river side, an exhaust tank and a control tank near the rising water level,
It has a back airflow prevention tank, a backwater flow prevention tank, and a water supply tank near the weir height, and the six tanks are appropriately connected by pipe members, and the opening part of the pipe body is connected to the up and down of the weir body. It is arranged according to the high water level of the weir and the standing water level of the river, and the page is equipped with a water shield plate having two water passage ports on the downstream river 1c of the weir body, and the exhaust pipe extending from the exhaust tank is exposed to the atmosphere, and the siphon is installed. The safety device used is characterized by ensuring exhaust air at all times and preventing the intrusion of earth and sand into the device by using a mud plate and a mud drain pipe. river water level,
Depending on the river water level entering the control equipment room, air or water can be automatically supplied and discharged into the weir body, which causes the bottle body to fall down or stand up, and also controls the A safety device installed in the equipment room ensures that even if the equipment malfunctions, the weir can be reliably vented to the atmosphere and the weir can be collapsed.In addition, auxiliary members have been added to prevent dirt from entering the equipment. The safety of the operation of this device can be ensured by providing a valve that can artificially lower the weir. (Example) The present invention will be explained below based on the drawings. 1st
As shown in the figure and FIG. 2, there is a bag-shaped actor tube 3 made of nine flexible members that traverses the entire length of the river and is fixed to the river bed with a fixing fitting 2. The inner tube 4 made of a flexible member is watertight and airtight so that water can enter the actor tube 3 and air can enter the inner tube 4.Here, the inner tube 4 is omitted and the inner tube 4 is directly connected. , Outer Chi-
The inside of the weir body 1's outer tube 6 is connected to the control equipment room 5 through a water pipe 7, and the inner tube 4 is sealed on all sides. The inside is connected to a ventilation pipe 8. On the other hand, as shown in FIG. It has a device 6.

In addition, the numbers including decimal places in Figure 3 are based on the riverbed as 100, the weir height as 100, and the overflow water depth at the time of collapse as 50.
%, downstream water depth is 50%, downstream water depth when standing is 20qb
This is a number indicating the height of each part from the riverbed in the case of .

The control device room 5 opens to the river upstream of the weir and forms a flow channel leading to the river downstream of the weir, with a water shield plate 9 near the downstream end and a water inlet 9a near the river bed.

An emergency water inlet 9b is provided at the height of the top of the layer, and the water flowing from the water inlet 9a is communicated with the opening of the water pipe 7 and the opening 10a of the siphon 10 located in the river bed. The other end of the water pipe 7 communicates with the outer tube 3.

The siphon 10 consists of an opening 10a lower than the river bed, a drain 10b opened on the downstream side of the weir body 1 slightly higher than the river bed, and a crest 10c slightly lower than the weir height separating the two.

The control equipment room 5 has an exhaust tank 11 and a control tank 12 at a height near the riverbed, and a backflow prevention tank 13, a backwater flow prevention tank 14, and a water supply tank 15 near the weir height. teeth,
All of them are sealed on all sides, and in particular, the lower part of the water tank 15 is divided into left and right sides by a partition plate 15a.

The other end of the ventilation pipe 8 that opens inside the inner tube 4 is opened at the top surface of the backflow prevention tank 14, and the other end of the exhaust pipe 16, which opens slightly lower than this top surface, is connected to the exhaust tank 11. Also, inside the exhaust tank 11, which is open near the top surface, there is built-in an air release frame 18 that is sealed on the sides and has a vent [17] on the top surface, and an air release pipe 19 is connected to the remaining top surface. The ends are high and open into the air. When the ventilation membrane 17 is made of cloth and is in contact with air on both sides, does it exhibit sufficient ventilation?When the - side is in contact with water, does it resist the pressure difference between the water and air due to the surface tension of the water? The upper opening of the air release frame 18 is made high within the limit that satisfies this function.The air guide pipe 20 opens at the top surface of the control tank 12, and the artificial overturning valve 21 is opened at the top of the control tank 12. The inside of the control tank 12 is connected to the atmosphere through an air supply frame 2 whose lower end is slightly lower than the river water level (hereinafter referred to as the standing water level) when the weir body 1 in the control tank 12 should rise.
2 is provided, and the other end of the air supply pipe 23 connected to the top surface opens at the upper part of the water supply tank 15 @The structure of the air supply frame 22 is the same as that of the single air frame 18 * Inside the control tank 12 The U-shaped pipe 24 connects to the ventilation membrane 17 of the air supply frame 22.
◇The above-mentioned 0 school pipe The height of the inner upper surface of the bottommost part of the water supply pipe 24 is slightly lower than the lower opening of the water injection pipe 25, which communicates one end with the control tank 12.

The water tank 15 is divided into left and right sections on the partition plate 10a.The other end of the breaker 26, which opens at the top of the siphon 100, opens at the level of the upper water surface in the right section of the water tank 15. It has a saw-shaped opening 26a facing downward. Also, the breaker 26 in the water supply 415 has an air supply pipe 23
The water supply pipe 27, which has an extremely small diameter compared to the breaker 26, opens at the bottom of the same compartment as the breaker 26 in the water supply 41115, which has an intake port 26b with an extremely small diameter hole that is slightly higher than the upper end. 1. A very small diameter water intake pipe 28 is opened near the upper left end of the breaker 26, which has been reversed from a position slightly lower than the riverbed and opened upwards, slightly lower than the standing water level.
The other end of the water intake pipe 28 is connected to the top of the water injection pipe 25, which opens slightly lower than the lower opening of the water supply pipe 27.On the other hand, in the left section of the water supply 4115, there is an air supply pipe. 2
5. The openings of the U-shaped pipe 24 and the water pipe 29 are located at a higher position than the weir height. The opening position of the U-shaped pipe 24 is slightly higher than the opening of the air supply pipe 23.

The water pipe 29 has an opening at a height near the water surface of the layer in the water supply tank, extends downward, and inverts at a slightly lower position (like the river bed).
It further extends upward and communicates with the bottom of the backwater flow prevention tank 14. A water supply pipe 4° having an opening at a higher position than the bottom opening of the water supply pipe 29 communicates with the backwater flow prevention tank 14. The end communicates with a sufficiently low position of the air discharge pipe y9. The air supply device 6 mainly consists of an air tank 3o and water tanks 31&C above it, both of which are sealed on all sides.

Furthermore, in the control tank 12, the lower end is aligned with the standing water level,
There is an intake frame 32 which has the same structure and other features as the air release frame 18, etc., and the intake pipe 65 connected to its top surface passes above the podium water surface, and the other end is located at a position slightly higher than the standing water level in the air tank 30. A signal frame 34 is also provided in the air tank 60, which is opened at a slightly lower position and slightly higher than the standing water level, and a sub-sai 7-on 65 connected to its top surface is The other end opens into the water on the upstream side of the water shielding plate 9 in the control equipment room 5 via a position slightly lower than the water surface above the layer, and a signal pipe 66 branches from an appropriate position at the top. , breaker 26
◇ In addition, a release pipe 37 opens downward at a position slightly lower than the ventilation membrane 17 in the air supply frame 22 and higher than the standing water level, and connects to the top of the bed via the upper water surface. The falling pipe 38 that opens at the top of the water tank 310 and the bottom of the water tank 31 is connected to the air tank 30.
Opens near the bottom of the air tank 30 After the air pipe 39 opens at the top of the air tank 30 passes through a sufficiently high position, the other end is connected to the exhaust pipe 1 in the ventilation flow prevention tank 13.
It opens downward at a position slightly lower than the upper end of 6.

An emergency siphon 41a, which is sufficiently large compared to the water supply pipe 40, opens at the bottom of the exhaust tank 11 as a safety device in case the series of devices having the above-described structure does not operate normally. After passing through the weir height frest, the weir height it drops to half the height, rises again, is higher than the upper surface of the most downstream side, and opens upward into the river downstream of the weir body, but near the opening. A small diameter drain port 41b is provided on the bottom surface.

The exhaust tank side of the emergency siphon 41a is connected to the air discharge pipe 19 by an air guide pipe 41c having approximately the same height and diameter as the water supply pipe 40, and a small starting pipe 41d branches off from the top of the opposite side of the emergency siphon 41a. A cap metal fitting 41 whose other end is opened at a predetermined height and which closes the upper side and side of the upper opening.
e together form a siphon in terms of water theory.

In addition, as an auxiliary safety device, there is a mud drainage pipe 42 that passes from the upstream side of the water shield plate 9 to the downstream side of the siphon 10. 1) The upper end is open to the atmosphere, and the lower end is open to the part below the riverbed of the air tank 60.

In addition, when it is impossible to raise the tower by normal means due to sedimentation during lodging, as an auxiliary device used, a forced upright pipe 44 is branched from the water pipe 7, and the other end is opened into the air at an appropriate height. A water shutoff valve 4 is installed in the water pipe 7 on the downstream side of this branch point.
5 is included.

Furthermore, the upstream opening of the control equipment room 5 has reeds on the same plane as the river revetment, and a shielding plate 46 and an opening that leave a water passage near the river bed, and the downstream side thereof extends over the entire length from the river bed to approximately half of the weir height. There is a mud shield plate 47 that crosses the road.

In addition, an emergency exhaust pipe 48 for use in an emergency is branched from the ventilation pipe 8 with an emergency exhaust valve 49, and a cleaning pipe 50 is provided at the bottom of the right end of the left section of the water tank 15.
There is a washing valve 51 on the way @ Next, the function of the present invention will be explained. This device automatically adjusts the water level to a predetermined height while standing up, and automatically adjusts the water level to a predetermined height during a flood, and automatically adjusts the water level after lying down and reducing the water level. stand up. It is also possible to artificially lay down and maintain that state during times other than floods, but first, let's talk about the water level adjustment function.
is slightly lower than the water level above the predetermined layer, so when the river water level upstream of the weir body approaches the predetermined height, the siphon 10
An overflow occurs from above the crest of the siphon 10, and the air inside the siphon 10 is carried away by the water flow and discharged. will be replenished.

Due to this influence on the frest of the siphon 10, the water level at the open end of the water pipe 7 is slightly lower than the upstream river water level, but the air volume in the station of the outer tube 3 and the inner tube 4 of the weir body 1 is lower. The water level of the upstream river is made large enough to raise the dam to a slightly higher water level than the predetermined level. Therefore, the water level of the upstream river can be reliably raised to the predetermined height, but when the water level reaches the predetermined level, the saw of the breaker 26 The shaped opening 26a is partially submerged and blocked, and the siphon 1
Air supply to 0 is limited. As a result, Saiphon 10
A so-called siphon effect occurs within the interior, and the flow rate increases significantly.@Water is supplied to the compartments with the openings of the one-way water pipe 7 and the siphon 10 through the water inlet 9a on the water shield plate 9.
Since the water level in this part is kept lower than the water level upstream of the weir body, the increase in water pressure inside the weir body via the water pipe 7 and the rise of the weir body is restricted, and the upstream river water level is The water level can be kept at a certain level. When the river flow increases and the upstream river water level rises slightly, this regulating effect becomes even stronger.
The water inside the weir is discharged, and the top of the layer and, ultimately, the water level of the upstream river returns to its original level.

It is clear that when the river flow rate decreases, the opposite effect works and the upstream river water level immediately recovers. In this way, the series of adjustment actions starting from the submergence of the saw-shaped opening 26a results in a large river flow rate. The more you do, the more you need to work. Therefore, theoretically, the higher the flow rate, the higher the water level of the upstream river will be in equilibrium.However, since the height of the saw-shaped opening 26a is small, in practical terms, the range of fluctuation in water level reaches a point where it can be considered almost constant. is shortened.

Next, we will explain the operation of the emergency waterway 9b when the river flow rate increases significantly. 0 When the river flow rate increases,
The water head inside the weir body, that is, the height of the water surface when the water inside the weir body is collected by a manometer and released into the atmosphere by 1iK, is considerably low, so if the siphon 10 sucks in too much air and the siphon 10 breaks, All of the water replenished through the water inlet 9a flows into the weir body, causing the upstream river water level to rise significantly.On the other hand, since overflow on the crest of the siphon 10 does not occur, the water level adjustment function is lost. Therefore, the emergency water inlet 9b is provided, and when the upstream river water level rises considerably, overflow water from this part will start overflowing from above the crest of the siphon 10, and the water level adjustment function will be immediately restored and the water level will be adjusted to a predetermined level. It is composed of

Next, we will explain the function of lodging due to floods, that is, the natural lodging function.As mentioned above, when the river flow rate increases, the water level adjustment function works, lowering the layer top and eventually the position of the inner tube 4, and finally the river bed. contact with the actor tube 3 of the section. If MK is in this state, the inner tube 4 becomes an obstacle and the upstream river water level cannot be lowered any further, so the upstream river water level rises too much and the saw-shaped opening 26a is completely submerged. As a result, Siphon 10
Since air is supplied only through the slightly small intake port 26b, the amount of air supplied is insufficient, the negative pressure inside the siphon 10 increases, and the water level inside the water suction pipe 28 rises.
Eventually, water is injected into the control tank 12 through the water injection pipe 25, and the lower end of the air supply pipe 23 is submerged in water, completely cutting off the air supply into the water supply tank 15, and the remaining air flows through the intake port 26b.
The water is discharged from the water supply tank 15 and the water is sucked from the water pipe 27 and the water pipe 29 due to negative pressure, and the water surface in the water tank 15 reaches the air intake port 26.
At this stage, the breaker will rise to the top of b.
Since the air supply to 26 is completely cut off, a siphon is also formed in this part, and the water in the water supply tank 15 is violently discharged. However, since the water conduit 27 has a small cross-sectional area, The water in the tank is violently sucked in, and the water level in this area is lowered. Therefore, the water pressure in the exhaust tank 11 is low. be done. At that time, when the exhaust tank 11 is water-sealed immediately before standing up, which will be described later, the water supply pipe 40
The air remaining inside is sucked into the backflow prevention tank 14, and the water level in the tank becomes slightly lower than the upper end of the water supply pipe 40. The water supply pipe 4 is large enough that the difference in height is slight.
Since the lower opening of 0 is sufficiently low and submerged in water, drainage from the thick exhaust pipe 19 is not obstructed at all. Immediately after the start of exhaustion, the water pressure at the lower opening of the water supply pipe 40 disappears instantaneously, so this water and some of the water in the air discharge pipe 19 fall again, and the lower end of the air discharge frame 18 is submerged in water. However, since the planar area of the exhaust tank 11 is sufficiently large, the distance between the aeration membrane and the water surface is sufficiently large, and the aeration membrane is already in contact with the air on both the upper and lower surfaces to restore breathability. The inside of the inner tube 4 communicates with the atmosphere without any resistance, and the air inside is pushed by the water pressure and is completely discharged. At this time, there should be no full-scale backflow through the water pipe 29. However, the upper end of the water supply pipe 40 is
Since the water head in the water supply tank 15 is also high at the start of exhaustion, backflow is prevented in the backflow prevention tank 14.

In addition, the water in the outer tube 3 is also discharged through the water pipe 7 and the siphon 10, so the weir body is completely collapsed. 〇Additionally, we will provide additional information regarding the problem of sedimentation inside the device related to the lodging function. - Lodging starts As for the water injected into the control tank 10, during the water level adjustment, there is almost no water replenished from the water conduit '27, and it depends entirely on the state of water storage, so the amount of infiltration of earth and sand is ignored. obtain.

In addition, the water sucked into the left side compartment of the water tank 15 has been in the exhaust tank 11 for a long time, so there is no problem. Furthermore, during lodging, the water sucked from the water conduit 27 contains a large amount of earth and sand. However, since it goes directly to the breaker 26, sedimentation on the right side section of the water tank 15 becomes a problem, regardless of the left side section.As will be explained later, this section is cleaned and drained immediately before the stand is raised. There is no problem because it will be done.

In addition, this water flow is generated only during the process of lodging and remains stationary in the lodging state, so there is no problem in terms of quantity. The water that has flowed into the water storage tank 31 tends to flow out as the water level in the control device room 5 falls due to the overturning, but the six pipes such as the release pipe 37 that open above the river bed in both tanks , in both cases, the other end is submerged in water, so the water column is sucked up to the vertical part of the other end, and the pressure is balanced. Therefore, the collapse of the stored water is automatically prevented.Next, we will explain the function of automatically standing up after the water level has decreased by 1.0 There is an air supply pipe 23, a breaker 26 and the siphon 10. Therefore, in the lodging state, if the artificial lodging valve 21 is open, the water surface in the control tank 12 is completely linked to the river water level, When the river water level drops to the lower end of the intake frame 32, air first enters the frame and restores the permeability of the ventilation membrane, while the intake pipe 3
Since the opening at the other end of 5 is under negative pressure, the air tank 30
Air is automatically drawn into the tank, and the water is discharged through the sub-siphon 35 and the siphon 10. Also, during air intake, the lower end of the air supply frame 22 is very low, so the opening of the release pipe 57 is still open. It is underwater, the water in the water tank 31 remains stationary, and air supply does not start.

However, if the river water level and, by extension, the water level in the control tank 12 suddenly drop, the pressure difference between the inside and outside of the ventilation membrane of the air supply frame 22 will become too large, and air will enter from this part before the intake is completed. However, incomplete air supply and eventually weir body 1
However, when the water level drops to the lower end of the water injection pipe 25, air will enter the breaker 26 from a high position in this part, causing the siphon to break, and Since the lower opening of the water conduit 27 is set higher than this, the water level will not drop any further and air supply will not start during intake.
If air enters into the 0 and auxiliary siphons 35 and the siphons in these parts are cut, it becomes impossible to drain water necessary for intake air, but since the diameter of the water suction pipe 28 is extremely small, it is necessary to In addition, since air does not enter into the upper part of the water tank 15, which is located at a higher position than in the areas where air cannot be allowed to enter, most of the water corresponding to this is removed. However, the air supply pipe 23 also passes through the control tank 12.
It is safe because the lower end of the water injection pipe 25 will be submerged in water again.◇If the river water level rises again during intake, the intake will be stopped, and as the river water level rises, the water will not flow into the air tank 30. Water flows in through the secondary siphon 35, and the air that has already been taken in is discharged into the atmosphere through the air pipe 39, exhaust pipe 16, air discharge pipe 19, etc. When the water rises further and the flood level reaches the rest of the emergency siphon 39a, water will enter the exhaust tank 11 through this part.
All of these operating devices will not cause any problems even if submerged in water.In other words, when the river water level drops to the lower end of the water injection pipe 25 during the intake of air into the air tank 30, the siphon in the breaker 26 will Although it is disconnected, the control tank 12
The water in the air tank 3 communicates with the river water through the air supply pipe 23, the water guide pipe 27, and the siphon 10, so when the water decreases to the lower end of the air intake frame 32 again, air intake starts and the air tank 3
When the water level in the tank reaches the lower end of the signal frame 64, air enters the sub-siphon 35, drainage and intake are stopped, and the water in the water tank 15 is discharged through the signal pipe 36. Air enters the tank, and the water in the tank is released from the negative pressure and falls into the exhaust tank 11. However, as in the example above, during one lodging, there is a flood and the exhaust tank 11 is full of water. If so, excess water is discharged from the emergency siphon 41a, the siphon in the siphon 10 is also cut off, and preparations for standing are completed. At this time, the air inside the ventilation flow prevention tank 15 is pushed to the top of the inner tube 4, and it goes without saying that the inside of the backflow prevention tank 13 also floods with water.In this way, air enters the J@ from the higher part. However, the water also enters the air supply pipe 25 and falls into the control tank 12. In addition, as in the above example, the river water level drops rapidly during the intake, and water from the upper end of the air supply pipe 23 flows into the control tank 12 due to the air supply from the lower end of the water injection pipe 25.
If it has not fallen inside, that amount will also fall when the intake is completed. Therefore, the upper end of the air supply pipe 23 and the intake port 26b
The difference in height of the upper end can be made as small as possible within the necessary limits, while the planar area of the control tank 12 is sufficiently large, so that the lower end of the release pipe 37 will not be submerged in water. Therefore, when the water level drops, the lower surface of the gas permeable membrane of the air supply frame 22 is first exposed and the ventilation is restored, and then the first release pipe 37
The vertically formed water column falls, and air is sucked in by the large negative pressure on the top surface of the water tank 31, and the water in the water tank 31 is released from the negative pressure and flows through the falling pipe 38 to the air tank 30. The water level in the air tank 30 rises until the lower ends of the intake pipe 33 and sub-siphon 35 are submerged in water. However, when the lower ends of both these tubes are submerged in water, the air pressure rises, and the air tube 39 and the air passage Air is supplied into the inner chest 4 through the trachea 8 ◇As the air supply progresses, the water level in the air tank 30 rises, and the water level in the water tank 61 descends, changing the height of the water levels in both tanks. Since the difference, ie the air pressure, decreases, there is no need for any device to prevent supercharging, as is the case with blower machines. On the other hand, if the inner tube receives excessive water pressure due to rising river water, air supply will be interrupted, so in effect, air supply must be carried out all at once.
When the air supply is completed, the running water first flows through the inner tube 4.
The water is dammed up only by the expansion of the layer, and then this water flows into the outer tube 3 through the water conduit 47a1, the water inlet 9a, and the water pipe 7, and buoyancy acts on the inner cheep 4, causing the top of the layer to rise. , the water level adjustment function explained above is achieved.Next, we will explain the function of the automatic safety device that automatically operates when the above device does not operate normally. A drainage port 41b is provided at this location, and since the inside of the reed shade Aie is connected to the atmosphere above the water level of the downstream river, the inside and outside water surfaces are completely the same. Therefore, during a predetermined flood, the weir body 1
When the upstream river water level rises to the starting pipe 41d without overturning, water flows into the outlet side of the emergency siphon 41a, and the amount of water flowing in is extremely large compared to the drain port 41b. When the water is full, the air inside is blocked from the outside world, carried away by the running water, and discharged, but the installation position of the starting pipe 41d is
1a, the air on the right side of the emergency siphon 41a is also discharged, and one siphon is formed within the safety device 41. This phenomenon is caused by water first flowing in from the entire circumference of the opening of the starting pipe 41d, Moreover, even if air is entrained slightly, the water level inside the cap 41e rises, so the water flow becomes even more intense and synergistically progresses extremely quickly.However, the cross-sectional area of the starting pipe 41d is extremely small. Saiphon 4
1a, the water level in the air discharge pipe 19 and the water pressure in the exhaust tank 11 drop rapidly, and the water level in the exhaust tank 11 is pushed down all at once to the lower end of the air exhaust frame 18, causing the exhaust Immediately after the start of 0 exhaustion, the water on the right side of the emergency siphon 41a and a part of the water in the air discharge pipe 19 fall into the exhaust tank 11 again, but
is not submerged in water, and this part is carried away and the exhaust continues.0 Also, at the start of exhaust, air is supplied from the air guide pipe 41c into the emergency siphon 41a, the siphon is disconnected, and no backflow occurs.◎However, , Water continued to drip from the starting pipe 41d for a while, but the rest part of the emergency siphon la
From the right end of the starting pipe 41d, there is also a reed on the exhaust tank 11 side.
Furthermore, since the cross-sectional area of the exit side of the emergency siphon 41a is sufficiently large, this does not impede the exhaust air, and since the upper end of the partition plate 15a is above the river water level, the water conduit pipe 27 is Intrusion of flowing river water is also prevented, and exhaust is completely performed. In this case, the water in the outer tube 3 is not forcibly discharged, but if the upstream river water level drops to the upper end of the mud shielding plate 47. , outer tube 3
The inside is insulated from the upstream river water level, communicates with the downstream river water through the water pipe 7, the water port 9a, and the drainage pipe 42, and is completely discharged by the water pressure difference inside and outside the weir body. Explaining the function of artificially lying down, maintaining that state, and raising it again0 This state of affairs is,
In addition to cases where it is necessary to lie down due to usage requirements, the weir body is useful for inspections, air replenishment in case of air leaks, and sweeping away sediment from upstream rivers.First, the weir body is laid down. To do this, close the artificial collapse valve 21. This cuts off air supply to the siphon 10, so
The negative pressure generated in the siphon 10 injects water into the upper control tank 12, the water in the air discharge pipe 19, etc. is discharged, and the siphon collapses through the same process as automatic collapse during a flood. If you leave the artificial lodging valve 21 closed, it will continue to lie down, and if you open it, it will of course stand up.◇The mechanism of these lodging and standing up is exactly the same as when automatic lodging occurs during a flood. , the presence or absence of abnormalities can be checked reliably and easily at all times, making it extremely safe.

Next, nine measures to be taken immediately after installation will be explained. Once the system is in use, all operations will be performed automatically. Immediately after installation, first, the exit of the emergency siphon 41a will be Inject water until water comes out from the water inlet 43, and then inject water from the water inlet 43 until the inner tube 4 is completely inflated. Describe the temporary structure at the time.

If the water storage tank 31 is not completely airtight and does not stand up completely, just inject water from the water inlet 43 as you did immediately after installation, and it will stand up completely. If it is expected that the weir body will rise, the artificial lodging valve 21
is closed, the water shut-off valve 45 is closed and water is injected from the forced upright pipe 44 to force the water to stand up halfway, and then the water shut-off valve 45 is opened to allow the river to fall down, and the dammed river water removes sediment. After repeating the sweeping, if the artificial lodging valve 21 is opened, it will stand up normally. If the air leakage in the inner tube 4 is so severe that the upstream river water level is too low to prevent overflow on the crest of the siphon 10, first close the water shutoff valve 45 and use the seed water from the forced riser pipe 44. Then, the height of the weir is raised until water flows out from the outlet of the siphon 10, and the artificial lodging valve 21 is closed to start exhaustion, and then the water flow valve 45 is opened to completely collapse, and then, When the artificial lodging valve 21 is opened, the robot automatically stands up, and at this time the air in the inner tube 4 is renewed, producing the same effect as replenishing air. After that, pay attention to the drop in the water level, close the artificial lodging valve 21 while there is still overflow from Siphon 10, and open the boat as soon as it starts to lodge, and the boat will lodge and rise automatically. Even if there is some air leakage,
It can be used temporarily with a little effort.

In addition, there is an abnormality in a device that should normally operate, and the safety device 41
When activated, the water in the water tank 31 flows out and is lost, and the weir body does not stand up, so an abnormality can be confirmed.

At that time, it goes without saying that inspection and repair should be carried out, but after that, after injecting water from the air discharge pipe 19 in the same way as immediately after the above-mentioned installation,
If water is injected into the air tank 30 through the water inlet 43, the weir body 1 will stand up. Also, if any of the above devices do not operate, it is of course possible to open the emergency exhaust valve 49 artificially and cause it to collapse. be.

Next, countermeasures against dust and sedimentation of sand and sludge inside the equipment will be explained. Floating waste is prevented from entering by the shielding plate 46 and washed away by the running water. Intrusion of sand and mud into the control device room 5 is first prevented by the mud shield plate 47, but the water conduit 27 and sub-siphon 3 that open slightly near the bottom of the water
Directly below the sludge drain pipe 42 is installed to prevent dirt from entering the equipment. All parts can be cleaned by injecting water from the pipe 44, but at that time, the cleaning valve 51 and the water shutoff valve 45 must be left open. It has a simple structure, less trouble, and is inexpensive. It has an automatic safety device that accurately maintains the water level at a constant level, collapses during floods, stands up when the water is low, and collapses even if the above device is abnormal, and does not have to be manually lowered at all times. Not only can this be done, but it also allows you to easily and comprehensively inspect all parts for abnormalities, which is extremely convenient and safe.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a sectional view of the weir body showing the structure of the weir body, and Fig. 3 is a system diagram of the device for operating the weir body in the present invention. 0 1...-Weir body 6... Outer tube 4... Inner tube 5... Control device room 6... Air supply device
7... Water pipe i... Ventilation pipe 9... Water shielding plate 10... Siphon 11... Exhaust tank 12... Control tank 13... Backflow prevention tank 14... Backwater flow Prevention tank 15... Water supply tank 15a... Partition plate 16...-Exhaust pipe 17... Ventilation membrane 18... Air release frame 19... Air release pipe 20... Air guide pipe 21... Artificial Lodging valve 22...Air supply frame 23...Air supply pipe 24...U-shaped pipe 25...Water injection pipe 26...Breaker 27...Water pipe 28...Water intake pipe 29...Transmission Water pipe 30...Air tank 31--Water tank 32...Intake frame 33--Intake pipe 34...Signal frame 55--Sub-siphon 36--Signal pipe 37--Release pipe 38-- - Falling pipe 39...Air pipe 40...Water supply pipe 41...Safety device 41a...Emergency siphon 41
b...Drain port 41C...Air guide pipe 41d...Starting pipe 41e...Kasa hardware 42...Sludge removal pipe 43...
Water inlet 44...forced standpipe 45...water shutoff valve 46...-shielding plate 47...lotus mud plate 48...emergency exhaust pipe 49...emergency exhaust valve 50...
・Cleaning pipe 51...Cleaning Benzai 1 Figure 2 Procedural amendment July 30, 1980 Mr. Kikancho, Commissioner of the Patent Office 1, Indication of the case 1981 Patent application No. o7s32;Q
2. g ″Atyv name bag. Eh, -11 soup. 3. Relationship with the case of the person making the amendment Patent applicant name Toyokuni Kogyo Co., Ltd. 5. Date of amendment order “voluntary” 6. Target of amendment 7. Amendment Contents (1) On page 7, line 13 of the specification, "high" is amended to "low". (2) On page 8, line 3 of the specification, "ventilation flow prevention tank 14" is corrected to "ventilation flow prevention tank 13." (3) In the 11th line of page 9 of the specification, the phrase ``partition plate 10a J'' has been corrected to ``partition plate 15a J.'' (4) In the 14th line of page 11 of the specification, the phrase ``breaker 23'' has been corrected. Correct as "Breaker 26". (5) In the first line of page 19 of the specification tube, the word ``thick'' has been corrected to ``tameno.'' q (6) On page 20, line 4 of the specification, amend the phrase ``because it depends'' to ``because it exists''. (7) On page 8, line 33 of the specification, "water inlet 47a" is corrected to "frest of mud shielding plate 47". (8) Amend Figure 2 as shown in the attached drawing. (9) Correct Figure 3 as shown in the attached drawing.

Claims (1)

[Claims] (1) An inner tube (
A weir body (11) consisting of a weir body (4) and an outer tube (3), a control device room (5) opening to the upstream river and downstream river of the weir body to form a flow channel, and the control device iK communication. and an air supply device (with an air tank and a water tank c (v)
The control equipment room (5) consists of a siphon (1G) installed on the river side downstream of the weir body, an exhaust tank heavy υ and a control tank α4 near the standing water level, and a ventilation flow prevention system near the weir height. Tank u3
．． It does not have a backwater flow prevention tank I and a water supply tank 4, and connects each type with pipe members as appropriate, and the opening part of the pipe body is set at the river weir height related to the raising and lowering of the weir body (1). Water shield plate (9) placed near the water level and the standing water level, and also has two water inlets for the river downstream of the weir.
A safety device (41) K using a siphon is provided to ensure that the exhaust pipe extending from the exhaust tank I is exposed to the atmosphere, and that the exhaust is ensured at any time, and that dirt and sand do not enter the device. This is a fully automatic control device for a bag-like weir, characterized in that this is prevented by a lotus mud plate αη and a bent mud drain pipe.