JP4753594B2 - Gate opening / closing device for river structures - Google Patents

Description

This invention relates to gating Misao SakuSo location of river structures.

  Flood control facilities have an important role in ensuring the safety of flooded areas during floods, and one such example is the lock as a river structure. And Xiamen is a water control facility that is installed across rivers or waterways, and is provided as a culvert in the main river embankment where the tributaries that cross the Xiamen cross. Yes. The opening operation of the gate of Xiamen is of high importance, and during typhoons or torrential rains, the amount of inflow into the waterway temporarily increases, so the water level rises and the waterway must be operated without proper operation. Some of them have a great social impact because they cause flooding and flooding the surrounding houses. Thus, Xiamen is a facility that shuts off hydraulic effects that occur upstream and downstream (inside and outside) of the facility by opening and closing the gate.

As a judgment standard for opening and closing the gate of Xiamen, a method based on water level and flow direction is usually performed. In the method based on the water level, a water level gauge is installed on each of the inner water side and the outer water side, and the gate is opened and closed based on the difference in water level. When the outside water level becomes higher than the inside water level, the gate is closed to prevent backflow to the tributary side. Conversely, when the outside water level becomes lower than the inside water level, it is necessary to open the gate promptly so that no flooding occurs on the inside water side. Similarly, in the flow direction method, the forward flow and the reverse flow are determined by visual observation and a flow direction meter, and the gate is closed.
JP-A-9-217333

  By the way, in the case of a channel such as a culvert, the upper surface of the channel is blocked, so the cable facility is difficult and a water level meter cannot be installed near the inland water side. Normally, it must be installed at a location where the upper surface of the waterway away from the gate is open, and therefore an accurate difference in water level between the inside and outside of the gate cannot be measured. As a result, there is a problem in that it is difficult to determine the exact timing of the gate operation.

  In the method using the flow direction meter, it is installed on the outside water side, judging from forward flow and reverse flow, and the gate is closed. However, with the flow direction meter, when the gate is closed, the flow near the gate becomes loose. Therefore, there is a problem that it is difficult to measure the flow direction and it is difficult to determine the opening operation.

  The present invention has been made to solve the above-described problems.

In order to achieve the problem to be solved by the above invention, the gate opening / closing device for a river structure according to the present invention opens and closes the gate by the opening / closing device due to the difference in water level between the internal water level on the internal water side and the external water level on the external water side. In the gate opening / closing operation device for a river structure , the internal / external water level difference sensor of the internal / external water level difference detection device is provided below the skin plate in the gate , and the internal / external water level difference sensor is a crystal type internal / external water level difference sensor. To do.

  According to the river structure gate opening / closing operation device of the present invention, in the river structure gate opening / closing operation device, a through hole is provided in the lower part of the skin plate to allow the internal water side and the external water side to pass through. A part of a connection adapter screw provided with a seal material that is one end of the quartz-type inside / outside water level difference sensor, a hollow pipe screw having an oil tube inserted therein is inserted into the through-hole toward the inside water side, It is preferable to fix with the double nut to the front-end | tip part which the said hollow pipe screw protruded in the internal water side.

  In the gate opening / closing operation device for a river structure according to the present invention, in the gate opening / closing operation device for the river structure, an outer nut of the double nut is preferably a nut with a bag.

The gate opening and closing apparatus of river structures of the present invention, the gate opening and closing apparatus of the river structures, the opposite side oil tube with hollow pipe threaded end of the connecting adapter screw may preferably be sealed with the nipple.
The gate opening / closing operation device for a river structure according to the present invention is the gate opening / closing operation device for the river structure, wherein a water level difference calculator connected to the crystal type internal / external water level difference sensor via an electric cable is provided on the ground. In addition, it is preferable that cable length adjusting means for adjusting the length of the electric cable when the gate is opened and closed is provided on the ground.

As will be understood from the description of means for solving the such problem described above, according to the present invention, the gate by the actual internal and external water level difference detected by the inner and outer water level difference sensor provided in the lower portion of the gate It can be opened automatically. Therefore, a more accurate criterion for determining the gate opening operation can be obtained.

  Moreover, since an internal / external water level difference sensor is provided in the lower part of the gate, installation such as cable laying can be easily performed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, for example gutter Gate 1 as river structures is provided between the inner water-side 3 and the outer water side 5. A gate 7 constituting the lock gate 1 is provided to move up and down. A lower end of a rack 11 extending in the vertical direction, which is a part of the opening / closing device 9, is attached to an upper end portion of the gate 7, and a driving device 13 is provided at the upper end of the rack 11. The drive device 13 includes a pinion meshed with the rack 11 and a drive motor. By driving the drive motor and rotating the pinion, the rack 11 moves up and down and the gate 7 moves up and down. Open and close. The driving device 13 may use other known driving mechanisms other than this.

  An internal / external water level difference sensor 15 is attached to the lower part of the gate 7 as will be described in detail later. The lower end of the electric cable 17 is attached to the inner / outer water level difference sensor 15 and the upper end of the electric cable 17 is attached to, for example, a spring type auto reel 21 as the cable length adjusting means 19. One end of another electric cable 23 is connected to the electric cable 17 wound around the spring type auto reel 21 and the other end of the electric cable 23 is connected to a water level difference calculator 25. The water level difference calculator 25 is provided, for example, on an upper portion of a pole 27 standing on the ground.

  The water level difference calculator 25 is connected to, for example, a control device 31 installed at a remote place via an optical cable 29, and the drive device 13 of the switchgear 9 and the control device 31 are connected by, for example, another optical cable 33. Has been.

  With the above configuration, the actual internal / external water level difference value detected by the internal / external water level difference sensor 15 is taken into the water level difference calculator 25 and further installed from the water level difference calculator 25 via the optical cable 29 at a remote location. It is sent to the control device 31. Then, in this control device 31, the actual internal / external water level difference value is compared with the preset value that has been set in advance. When the actual internal / external water level difference value becomes larger than a preset value that is set in advance, a signal is sent from the control device 31 to the drive device 13 of the switchgear 9 via the optical cable 33, and the gate 7 can be opened automatically. Therefore, a more accurate criterion for determining the gate opening operation can be obtained.

Although the example in which the length of the electric cable 17 is adjusted by the spring type auto reel 21 as the cable length adjusting means 19 has been described, the length of the electric cable 17 may be adjusted by using a cable carrier (registered trademark). It is possible.

The details of the internal / external water level difference sensor 15 attached to the lower part of the gate 7 will be described. Referring to FIG. 2, FIG. 3, and FIG. the upper and lower inner at 35 are integrated left portion of the H-section steel 37 and 39, upper and lower portions of the sensor mount 41 on top of the right portion of the lower and H-section steel 39 in the right portion of the H-section steel 37 The mounting plates 43 and 45 are sandwiched between the bolts 47 and attached thereto. The sensor mounting base 41 is integrated with the right end of the mounting plate 49 in FIG. The inside / outside water level difference sensor 15 is provided on the mounting plate 49 via a packing 51, and a U-bolt 53 is put on the sensor 15 through the hole, and is passed through a hole formed in the mounting plate 49 and fixed with a nut 55 at the bottom. The

  The inside / outside water level difference sensor 15 will be described by taking, for example, a crystal type inside / outside water level difference sensor as an example. As shown in FIG. 5, a square case 57 having an open front surface is provided. It is closed by a lid (not shown). A support member 59 protrudes horizontally at a substantially central portion of the left plate 57L in the case 57, and a left end of the support member 59 via a flexible spring member 61 is located to the left of a substantially intermediate portion of the pressure transmission lever 63. The fulcrum part 63A protruding in the direction is connected, so that the pressure transmission lever 63 can swing around the spring member 61.

  Further, between the one end 63B of the pressure transmission lever 63 and the right and left of the case 57 facing the both ends, both ends of a crystal piece 65A constituting the crystal resonator 65 are coupled by support members 67, 69. Electrodes 71 and 73 are attached to the upper and lower surfaces of 65A, and the electrodes 71 and 73 are connected to an active element (not shown) and a tuning circuit to constitute a pressure-frequency converter that changes the oscillation frequency in accordance with the fluid pressure. It has become so.

  The closed end sides of the first and second bellows 75 and 77 are fixed to the left and right surfaces of the other end 63C of the pressure transmission lever 63, and the first and second bellows 75 and 77 are opened. The ends of the pressure transmission lever 63 are hermetically fixed to the right plate 57R and the left plate 57L of the case 57, and the pressure transmission lever 63 rotates with a slight expansion or contraction of the first bellows 75 or the second bellows 77 as a fulcrum. This is converted into a movement, and the movement is transmitted as pressure to the left and right of the crystal piece 65A.

  Pipe connecting brackets 79 and 81 are fixed to the right plate 57R and the left plate 57L of the case 57 to which the open ends of the first and second bellows 75 and 77 are fixed, respectively. The pipe connection fittings 79 and 81 are hermetically coupled so that one end of the narrow tubes 83 and 85 having a spiral-shaped diameter of, for example, 1/16 inch or less communicate with the inside of the bellows 75 and 77, respectively. The other ends of the thin tubes 83 and 85 are connected to coupling devices 87 and 89 for coupling with an external mechanism.

  The coupling device 87 is fitted with a fitting nut 91 via a seal ring 93. As shown in FIG. 6, the coupling device 89 includes a nipple 95 into which the other end of the narrow tube 85 is inserted, a hollow connection adapter screw 97, and a double nut 99. The nipple 95 includes a hollow joint 95A and a joint 95B attached to the head portion 97A of the connection adapter screw 97. The connection adapter screw 97 includes a head portion 97A and a hollow screw portion 97B integrated with the head portion 97A. The connection adapter screw 97 is provided with a seal washer 98 as a seal material inserted into the hollow threaded portion 97B and serves as a seal. The double nut 99 includes a tightening nut 99A and a bag-tightening nut 99B. Moreover, the lengths of the tightening nut 99A and the bag tightening nut 99B are the same, and are ½ of the length obtained by subtracting the width of the skin plate 35 from the length of the threaded portion 97B. The skin plate 35 is formed with a female screw 101 penetrating through the threaded portion 97B.

  With the above configuration, after joining the hollow joint 95A to the joint 95B, the joint 95B is screwed into the head portion 97A of the connection adapter screw 97, and then, for example, the entire circumference is fixed by welding. Then, with the seal washer 98 inserted into the threaded portion 97B of the connecting adapter screw 97, the threaded portion 97B of the connecting adapter screw 97 is screwed into the female screw 101 formed on the skin plate 35, and the tip of the threaded portion 97B is attached. Project to the inside water side. The protruding screw portion 97B is tightened with a tightening nut 99A, and further tightened with a bag-tightening nut 99B.

Accordingly, a female thread 101 that is a through hole for allowing the internal water side 3 and the external water side 5 to pass through is provided in the lower part of the skin plate 35, and the connection adapter that is one end of the crystal type internal / external water level difference sensor 15 from the external water side 5. A screw portion 97B of a connection adapter screw 97, which constitutes a part of the screw 97 and has a thin tube 85 inserted therein, is screwed to the female screw 101 toward the inner water side, and the screw portion 97B protrudes to the inner water side 3 By fixing the front end portion with a tightening nut 99A, which is a double nut 99, and a tightening nut 99B with a bag, it is possible to be firmly fixed without being easily detached. The sealing effect can be further exhibited by the seal washer 98 being interposed between the outside of the skin plate 35 and the inside of the head portion 97A of the connection adapter screw 97.

Further, since the nut on the outside of the double nut 99 is a bag- clamping nut 99B, the hollow threaded portion 97B can not be detached when the hollow threaded portion 97B is damaged, so that the hollow threaded portion 97B is damaged. Can be prevented. Furthermore, since the narrow tube 85 on the opposite side to the hollow threaded portion 97B side of the connection adapter screw 97 is sealed by the nipple 95, it is possible to prevent water from entering.

  The lengths of the tightening nut 99A and the bag tightening nut 99B are the same, and are half of the length of the hollow threaded portion 97B minus the width of the skin plate 35. The number of protrusions protruding toward the water side 3 can be reduced as much as possible.

  The other end of the narrow tube 83 is opened to the outside water side 5, and the outside water pressure is introduced into the first bellows 75 through the narrow tube 83, and the fluctuation of the outside water pressure is transmitted to the first bellows 75. On the other hand, the other end of the narrow tube 85 is fitted to a double nut 99 that is watertightly attached to the skin plate 35 so as to communicate with the inner water side 3 that is the inside of the skin plate 35. The bellows 77 is vacuum-filled with a relatively high-viscosity nonvolatile liquid that is difficult to mix with the liquid to be measured, such as silicon oil or fluorine oil having a viscosity of 300 CS or more when the liquid to be measured is water. Has been. The liquid filled in the first and second bellows 75 and 77 maintains the filled state by the capillary action of the thin tube 85, and the above filled liquid even if the other end of the thin tube 85 is opened to the internal water side 3. Will not leak.

  With the above configuration, in the state where the other end of the narrow tube 83 communicating with the first bellows 75 is opened to the outside water side 5 and the other end of the narrow tube 85 communicating with the second bellows 77 is opened to the outside water side 5. When the pressure of the liquid to be measured (for example, water) and the external water pressure act on the liquid in the thin tube 85 through the other end opening of the thin tube 85, the liquid in the thin tube 85 is changed according to the pressure of the liquid to be measured and the external water pressure. The second bellows 77 is pushed out into the second bellows 77, and the second bellows 77 extends. At this time, since the same external water pressure as that in the second bellows 77 is applied to the first bellows 75 through the thin tube 83, the fluctuation portion due to the fluctuation of the external water pressure is canceled out and always corrected accurately for measurement. The pressure of the liquid can be measured.

When the second bellows 77 expands according to the pressure of the liquid to be measured and the external water pressure, the pressure transmission lever 63 receives the rotational force in the direction of arrow A in FIG. The crystal piece 65A of the crystal resonator 65 on the one end 63B side is compressed. When the crystal piece 65A receives a compressive force, the oscillation frequency of the pressure-frequency converter including the crystal resonator 65 changes according to the force applied to the crystal piece 65A due to the piezoelectric phenomenon, and this changes the pressure of the liquid to be measured. Will be detected.

  Further, when the pressure of the liquid to be measured decreases, the pressure introduced into the second bellows 77 decreases and the second bellows 77 contracts, the pressure transmission lever 63 receives the rotational force in the direction opposite to the arrow A. As a result, a tensile force acts on the crystal piece 65A, and as a result, the oscillation frequency of the pressure-frequency converter including the crystal resonator 65 changes according to the pressure of the liquid to be measured due to the piezoelectric effect of the crystal piece 65A. Become.

  The internal / external water level difference detected by the internal / external water level difference sensor 15 is taken into the water level difference calculator 25 and calculated as shown in FIG.

  The opening / closing operation of the skin plate 35 will be described with reference to the drawings. For example, in FIG. 7A, the inner water side 3 and the outer water side 5 are in a state where the skin plate 35 is open, and the inner water side to the outer water side. It flows as a forward flow toward. From this state, as shown in FIG. 7B, at the beginning of flooding, for example, when the flow direction meter 103 provided on the inland side works to detect a backflow, the skin plate 35 is closed during flooding as shown in FIG. 7C. Then, as shown in FIG. 7D, the inner water level and the outer water level become horizontal at the end of the flood.

As shown in FIG. 8A, at the end of the flood, the actual internal / external water level difference H (internal water level-outside water level) detected by the internal / external water level difference sensor 15 provided at the lower part of the skin plate 35 in the gate 7 is set in advance. When the set value becomes larger than the set value H0, the gate is automatically opened as shown in FIG. 8 (B) to flow as a forward flow from the inner water side to the outer water side, and finally to move horizontally. be able to. Therefore, a more accurate criterion for determining the gate opening operation can be obtained. Moreover, since the inner and outer water level difference sensor 15 in the lower portion of the skin plate 35 is al provided in the gate 7, cabling, etc., it is possible to easily perform installation.
Na us, this invention is not limited to the above-described embodiments, but may be practiced in other embodiments by performing a suitably modified. In the present embodiment, the lock structure has been described as an example of the river structure, but the present invention can be applied to a lock pipe, a water gate, a drainage station, a movable weir, a lock gate, and the like.

It is a side view of the gate opening / closing operation apparatus of the river structure of this invention. It is the front view which attached the inside and outside water level difference sensor to the lower part of a gate. FIG. 3 is a side view in FIG. 2. It is a top view in FIG. It is detailed explanatory drawing which attached the internal and external water level difference sensor to the lower part of the gate. It is an exploded view of the coupling device which attaches an inside / outside water level difference sensor to a gate. (A)-(D) is explanatory drawing of an example which showed the operation | movement which closes a gate with the flow direction detected by the flow direction meter. (A), (B) is explanatory drawing of an example which showed the operation | movement which opens a gate by the internal / external water level difference detected by the internal / external water level difference sensor.

Explanation of symbols

1 Xiamen (river structure)
3 internal water side 5 external water side 7 gate 9 switchgear 11 rack 13 drive 15 and out water level difference sensors 17 and 23 electrical cable 19 cable length adjustment means 21 spring auto reel 25 level difference calculator 27 poles 29, 33 Optical cable 31 Control device 35 Skin plate 37, 39 H-shaped steel 41 Sensor mounting base 43, 45 Mounting plate 47 Bolt 49 Mounting plate 51 Packing 53 U bolt 55 Nut 57 Case 59 Support member 61 Spring member 63 Pressure transmission lever 65 Crystal oscillator 67 , 69 Support member 71, 73 Electrode 75, 77 Bellows 79, 81 Pipe fitting 83, 85 Narrow tube 87, 89 Connecting device 91 Fitting nut 93 Seal ring 95 Nipple 97 Connection adapter screw 97A Head 97B Hollow thread 9 Seal washer (seal material)
99 Double Nut 99A Tightening Nut 99B Bag Tightening Nut 101 Female Thread 103 Flow Direction Meter

Claims (5)

In a gate opening / closing operation device for a river structure that opens and closes a gate by an opening / closing device according to a difference in water level between an internal water level on the internal water side and an external water level on the external water side, an internal / external water level difference detection device is provided below the skin plate in the gate. A gate opening / closing device for a river structure, characterized in that a water level difference sensor is provided and the inside / outside water level difference sensor is a crystal type inside / outside water level difference sensor . The gate opening / closing operation device for a river structure according to claim 1, wherein a through hole is provided in the lower part of the skin plate so as to penetrate the internal water side and the external water side, and the crystal type internal / external water level difference sensor is formed from the external water side . A hollow pipe screw that constitutes a part of a connection adapter screw provided with a seal material at one end and that has an oil tube inserted therein is inserted into the through hole toward the inner water side, and the hollow pipe screw is inserted into the inner water side. There gating operating device river structures, wherein Rukoto allowed fixed by double nuts tip protruding. The gate opening / closing operation device for a river structure according to claim 2 , wherein the outer nut of the double nut is a nut with a bag . In the gate opening and closing apparatus of river structure according to claim 2 or claim 3, opposite oil tube between the air pipe threaded side among the connection adapter screw river structure characterized that you have been sealed with the nipple Gate opening / closing device for things. 5. The gate opening / closing operation device for a river structure according to claim 1, wherein a water level difference calculator connected to the crystal type internal / external water level difference sensor via an electric cable is provided on the ground, and when the gate is opened or closed, the gate opening and closing equipment of river structures cable length adjustment means characterized that you have provided in the ground for adjusting the length of the electrical cable.

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