JP2006249701A - Water introducing device of water introducing port for measuring water level - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve measuring accuracy of a level gauge, by easily and inexpensively performing maintenance work of a water introducing port, without making a worker descend up to the water introducing port. <P>SOLUTION: A rail member 6 is laid up to the vicinity of the water introducing port 5 communicating with a water level measuring tank 4, and a damper member B lifting by a hoisting means 14 is arranged along the rail member 6. When the damper member B is lowered, the damper member is arranged in a position oppositely closing to the water introducing port 5, and when the damper member is lifted, the damper member is formed so as to open the water introducing port 5. The damper member B is formed of a metallic plate-like member 10 for arranging a plurality of holes 10a for introducing water on a surface opposed to the water introducing port 5 and a shock absorbing member 11 attached to the plate-like member 10 and allowing only a flow of the water, and only the damper member is moved. The damper member B is stored and incorporated into a box 12 for arranging a hole 12a communicating with the holes 10a of the plate-like member 10, and is moved by the rail member. Only the box is also fixed to the vicinity of the water introducing port, and the damper member is moved along the rail member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water guide device for a water level measurement inlet that can maintain the measurement function of a water level observation water level tower and adjust the water level response at low cost.

  In facilities such as dams and weirs that dam rivers and store water (hereinafter referred to as “dams”), the water level data of dam water is important basic data for the operation and management of dams. The measured water level data is used as basic data for obtaining various important dam data such as inflow and dam discharge, and various dam operations can be performed based on various data obtained by calculation. Executed. Therefore, in order for such dam operation to be executed smoothly, for example, the water level on the water surface measured by a water level meter placed in the water level tower is always reflected in a state where there is little response delay with the dam water level outside the water level tower. Therefore, it is required to maintain the measurement accuracy of the dam water level by the water level gauge.

  By the way, in the conventional apparatus shown in FIG. 15, the water level tower 01 attached to the dam dam has a water level measuring tank 03 in which a float type water level gauge 02 is installed. A water inlet 04 is provided that allows the water W stored in the dam (water upstream of the dam) W to communicate with the water. This water inlet 04 is always immersed in water at a depth of about 6 m, and in order to avoid sediments and debris floating in the water from accumulating on the water inlet 04, the four corners of the iron plate 05 are anchor bolts. It is fixed at 06 and the water inlet 04 is covered.

  The iron plate 05 has strength against waves, and is provided with a plurality of holes 07 in order to smoothly guide dam water to the water level measuring tank 03 side while preventing intrusion of earth and sand and dust. The size of these holes 07 is such that the water level in the water level measurement tank 03 is prevented from drastically fluctuating due to the influence of waves, and at the same time, the underwater earth and sand and dust are prevented from entering the water level measurement tank 03. Is set.

  The water level gauge 02 is connected to the water level gauge main body 010 by a wire 09, and the position of the water level gauge 02 can be measured by the water level gauge main body 010 through the wire 09.

  In the conventional apparatus configured as described above, the water W on the upstream side of the dam communicates with the water level measuring tank 03 through the hole 07 of the iron plate 05, and therefore, the dam water W on the upstream side of the dam into the measuring tank 03. The water level is the same as that of the dam water W. Thereby, the water level meter 02 measures the water level of the water level measuring tank 03 and maintains the measurement accuracy of the dam water level.

  In the above-described conventional apparatus, the iron plate 05 is fixed in order to prevent dust from entering the water level measuring tank 03, but instead, Patent Document 1 (Japanese Patent Laid-Open No. 11-172661) and Patent Document 2 (Japanese Patent Laid-Open No. 2000). -8350) and Patent Document 3 (Japanese Patent Laid-Open No. 2002-363950) may be used. That is, all of the technologies described in these patent documents install a so-called screen in the flow path of the intake port to supplement and remove dust, driftwood, jellyfish and other debris mixed in the intake water, thereby reducing the power generation capacity. It is intended not to come. However, since these screens are coarse, it is difficult not only to suppress the intrusion of earth and sand, but also because the influence of waves is likely to be given to the water level gauge 02, it cannot be diverted.

In the above conventional apparatus, the water level is measured in the water level measuring tank 03 installed in the water level tower 01. However, in Patent Document 4 (Japanese Patent Laid-Open No. 2000-88628), dam water is supplied to the dam dam. There is disclosed a technique in which a container formed to flow in and out is immersed in dam water and thereby the water level is measured. However, the container of Patent Document 4 has a complicated structure in which a submersible pump, a drain outlet, a water level raising switch, and the like are incorporated, and is easily affected by climatic conditions, has a high maintenance cost, and is difficult to adopt. Is.
Japanese Patent Laid-Open No. 11-172661 JP 2000-8350 A JP 2002-363950 A JP 2000-88628 A

  However, in the above prior art, the water level measuring tank 03 is in a state of being directly communicated through the hole 07 provided in the iron plate 05, so that the measured water level is likely to fluctuate due to the influence of waves. Moreover, earth and sand, dust, etc. flow into the water inlet 04 and precipitate or adhere. If the water inlet 04 of the water level measuring tank 03 is clogged, the water level in the water level measuring tank 03 cannot respond to the change of the dam water level, and there is a possibility that the dam operation may be hindered. Thus, when maintenance work is required, maintenance work by diving work or dam water is drained to expose the iron plate 05, the anchor bolt 06 is pulled out, the iron plate 05 is removed, and earth and sand are removed. Maintenance work to remove. For example, in the case of maintenance work by diving work, once the work blackout has been carried out, the iron plate 05 is removed and the earth and sand around the water inlet 04 and the removal work of dust and the like are carried out. For this reason, since diving work and power reduction must be performed, there is a problem that the cost is increased accordingly.

  Further, in the case of maintenance work by draining dam water, the maintenance work is performed with the water inlet 04 exposed, so it is difficult to increase the number of times of maintenance work. As a result, there is a problem that the water level measurement accuracy is likely to be lowered.

  The present invention has been devised in view of the above, so that the worker can easily perform maintenance work on the water inlet by remote control without going down to the water inlet each time, An object of the present invention is to provide a water guide device for a water level measurement inlet that is improved in the measurement accuracy of a water level meter and is low in maintenance and inspection costs.

  In order to solve the above problems, the present invention takes the following measures. That is, the invention according to claim 1 is a water guide device for a water level measurement water inlet, wherein a damper member lays up to the vicinity of the water inlet leading to the water level measuring tank and is moved up and down along the rail member by a winding means. When the damper member is lowered, the damper member is installed at a position facing the water inlet and closed.When the damper member is raised, the water inlet is opened, and the damper member is Formed with a metal plate-like member provided with a plurality of holes for introducing water on the surface facing the water inlet, and a buffer member attached to the plate-like member and allowing only water flow It is characterized by.

  Therefore, according to the first aspect of the present invention, the damper member guided to the rail member by the winding means and lowered to the vicinity of the water inlet for measuring the water level is installed at a position where the damper member closes facing the water inlet. The dam water or river water (hereinafter referred to as “dam water”) side and the water level measurement tank communicate with each other through a plurality of holes in the plate member and the buffer member. The water passes through the buffer member and flows into and out of the water level measuring tank through the water inlet. Since it is a metal plate-like member, it has high rigidity, and the plurality of holes are also set to a size that can minimize the effects of waves. Therefore, when waves are generated in the dam water, the waves are blocked by the presence of the plurality of holes provided in the plate-like member and the buffer member. Can be minimized.

  Further, the presence of the hole in the plate-like member can prevent the intrusion of debris such as earth and sand and driftwood. On the other hand, since the buffer member is attached to the plate-like member, it is possible to prevent earth and sand from flowing into the water inlet. As a result, according to the water inlet device for water level measurement of the present invention, the clogging of the damper member due to adhesion of earth and sand or dust to the damper member or accumulation of earth and sand or dust entering the water inlet is suppressed. Thus, it is possible to avoid a deterioration in measurement accuracy due to a response delay caused by a water level gauge provided in the water level measurement tank.

  In addition, when the response of the water level gauge is remarkably accelerated or delayed, it is necessary to perform maintenance and inspection work on the damper member. In this case, the damper member immersed in the dam water is taken up by the hoisting means. By simply rolling up and pulling up, it will be possible to remove dirt and other debris such as dirt and dust from the damper member on land, making maintenance and inspection easier.

  In addition to the above, the maintenance and inspection work performed at this time may be adjusted by changing the water permeation performance of the buffer member or by changing the hole size of the plate-like member to an appropriate one. According to the response state of the water level gauge, the response to the fluctuation of the water level can be advanced, delayed or adjusted, and the work for improving the measurement accuracy can be performed efficiently.

  In addition, when there is sediment in the water inlet, the water on the water level measurement tank will flow out from the water inlet just by pulling up the damper member and fully opening the water inlet. Can be washed away with force. As a result, maintenance and cleaning around the water inlet can be automatically performed not by diving work but by remote operation by means of hoisting from the land.

  In addition, the damper member can be set or pulled up so as to reliably close the water inlet by simply moving the damper member up and down by the rail member. In addition, it is possible to eliminate the need for fastening work using anchor bolts, which has been conventionally performed, and to increase the efficiency of maintenance and inspection.

  Further, the invention according to claim 2 relates to the water guide device for the water level measurement water inlet according to claim 1, wherein the buffer member of the damper member is formed in an integral sandwich structure sandwiched between a pair of plate members. It is characterized by that. According to the second aspect of the present invention, since the buffer member of the damper member is formed in a sandwich structure sandwiched from both sides by a pair of plate-like members, the buffer member can be prevented from being deformed by waves. As a result, it is possible to effectively prevent the earth and sand from the buffer member from flowing into the water inlet side, and it is possible to realize a damper member having excellent durability. In addition, since the plate-like members are arranged on both sides of the buffer member, a plurality of holes provided in each plate-like member is increased, and the effect of preventing intrusion of earth and sand and dust can be further improved.

  The invention described in claim 3 relates to the water guide device for a water level measurement inlet according to claim 1 or 2, wherein the damper member is a metal box in which a hole communicating with the hole of the plate-like member is formed. It is characterized in that it is formed in a damper means that is housed in a removable manner and integrated.

  According to the third aspect of the present invention, since the damper member made up of the plate-like member and the buffer member is configured as a damper means that is housed in a metal box so as to be freely put in and out, the damper member is a box. Since it is protected, durability can be improved. Also, during maintenance inspection, the unitized box-integrated damper means is lifted upward along the rail member, and then the damper member is pulled out of the box on land to perform cleaning to remove clogging, or replace with another part. Maintenance and inspection can be performed easily.

  According to a fourth aspect of the present invention, there is provided the water level measurement water inlet apparatus according to the first or second aspect, wherein the metal box that houses the damper member faces the water inlet at the lower part of the rail member. The box is fixed so as to close the water inlet, and the box is formed with a hole communicating with the hole of the plate-like member when the damper member is stored in the box. .

  According to the fourth aspect of the invention, the damper member composed of the plate-like member and the buffer member, which has been lowered by the winding means, is inserted into the metal box fixed at the position facing the water inlet, and is stored or rolled up. It is like that. For this reason, since only the damper member can be inserted and removed from the box, maintenance and inspection work of the damper member can be facilitated.

  In addition, the invention according to claim 5 relates to the water guide device of the water level measurement water inlet according to any one of claims 1 to 4, wherein the hole provided in the plate-like member is a hole provided in the box. It is characterized by being provided so as to shift the position of.

  According to the fifth aspect of the present invention, since the hole provided in the plate-like member is provided so as to shift the position of the hole provided in the box, the hole on the plate-like member side and the hole on the box side are provided. It will be possible to arbitrarily adjust the amount of dam water flowing. As a result, even when the waves are large, such as during a typhoon, the effects of waves can be reduced, and the amount of water flowing inside and outside the water inlet can be easily adjusted, maintaining the measurement accuracy of the water level measurement in a stable state. It becomes possible.

  The invention according to claim 6 is a water guide device for a water level measurement water inlet, and is provided so as to be movable up and down along the rail member laid to the vicinity of the water inlet leading to the water level measuring tank. The damper means is disposed so as to close the water inlet when it is lowered to a position facing the water inlet, and the damper means has a plurality of holes for introducing water to the surface closing the water inlet. Provided between the provided box, a pair of metal plates that are removably accommodated in the box, and formed with a plurality of holes for introducing water at positions corresponding to the holes, and between the pair of metal plates, buffering waves And a damper member formed by a buffer member that allows only water flow.

  According to the sixth aspect of the present invention, when the damper means provided so as to be movable up and down along the rail member is provided so as to block the water inlet, even if a wave is generated in the dam water, the wave is A plurality of holes provided in the box and / or the metal plate are blocked by the presence of the buffer member, and the influence on the water level measuring tank can be minimized. In addition, the presence of the box and / or the hole in the metal plate can prevent the intrusion of debris such as earth and sand and driftwood. Furthermore, since the buffer member is attached to the metal plate, it is possible to effectively prevent the earth and sand from flowing into the water inlet. As a result, clogging of the damper means due to adhesion of earth and sand and dust to the damper means and accumulation of earth and sand and dust entering the water inlet is suppressed, and due to a response delay by the water level meter installed in the water level measuring tank Deterioration of measurement accuracy can be avoided.

  Further, for example, by pulling up the damper means by using a winding means, a metal plate or a buffer member is taken out from the box on the land, and dusts such as earth and sand and dust can be removed for easy maintenance and inspection. Change the water permeation performance of the buffer member, change the size of the hole in the metal plate with an appropriate one, etc., and speed up the response to water level fluctuations according to the response level of the water level gauge, It can also be slowed down and adjusted, enabling efficient work to improve measurement accuracy.

  In addition, it is possible to forcibly wash out the sediment accumulated at the water inlet just by pulling up the damper means, and maintenance and cleaning around the water inlet can be performed automatically by remote operation using the hoisting means from the land instead of diving work. It becomes like this.

  In addition, the damper means can be set and pulled up at the water inlet just by raising and lowering with the rail member, so that it is not necessary to perform the fastening work with anchor bolts, which has been done conventionally, and the efficiency of maintenance inspection Can be planned.

  The invention according to claim 7 is a water guide device for a water level measurement water inlet, facing a rail member laid to the vicinity of the water inlet leading to the water level measuring tank, and a position closing the water inlet at the lower part of the rail member. And a box provided with a plurality of holes for guiding water to the surface facing the water inlet, and formed so as to be movable up and down along the rail member, and when reaching the lowered position, the box The damper member is provided between the pair of metal plates and a pair of metal plates formed with a plurality of holes for introducing water to positions corresponding to the holes of the box. And a buffer member formed so as to buffer waves and allow only water to flow.

  The invention according to claim 7 is different from the invention according to claim 6 in that in the invention of claim 6, the damper member made up of the metal plate and the buffer member moves up and down the rail member in a state integrated with the box. In the invention according to claim 7, the damper member and the box, each of which is a unit of the metal plate and the buffer member, are formed separately, and only the box is fixed in advance to the water inlet, and the damper is provided. It is in the point which made it the structure which raises / lowers a member along a rail member.

  Therefore, the invention according to claim 7 also allows the damper member to be moved up and down along the rail member except that the box is fixed to the water inlet, and as described above, the invention according to claim 6 Has almost the same effect.

  According to the present invention, since it is not necessary to remove the anchor bolt, it is not necessary to submerge in the dam water, and the status of the water inlet can be managed regardless of dam drainage, and maintenance and inspection work can be performed at low cost. It is possible to minimize clogging caused by sediment and dirt that accumulates in the water inlet and the effects of dam water waves, and to prevent sediment from flowing into the water inlet. It is possible to avoid the deterioration of measurement accuracy due to response delay by the installed water level gauge, and also to adjust the response to fluctuations in the water level according to the response level of the water level gauge, so that work for improving measurement accuracy can be carried out efficiently. .

Hereinafter, the best mode for carrying out the present invention will be described in detail based on each embodiment shown in the drawings.
[First embodiment]
As shown in FIGS. 1 to 9, a concrete water level measuring tank 4 is provided below the water level observation chamber 3 of the water level tower 2 attached to the dam 1 of the dam. The water level measuring tank 4 has a space that is elongated in the vertical direction, and a water inlet 5 (see FIG. 5) that forms, for example, a rectangular opening is formed in the lower portion thereof, for example, near a water depth of 6 m on the dam water W side. The dam water W side and the water level measuring tank 4 communicate with each other so that the dam water W can be introduced. As shown in FIG. 9, for example, a float-type water level gauge 7 is suspended in the water guided to the water level measuring tank 4. The water level gauge 7 is connected to a water level gauge main body 9 provided in the water level observation chamber 3 via a composite cable 8 composed of a power line, a signal line, etc. For example, a data signal detected by the water level gauge 7 The management data is recorded in the main body 9, and various management data necessary for the dam operation are calculated based on this.

  A rail member 6 extending almost to the vicinity of the water inlet 5 is laid almost vertically on the outer wall surface of the dam 1 of the water level tower 2, and guides a damper member, which will be described later, so as to move up and down. That is, the rail member 6 is formed by a pair of stainless steel or iron rails 6a having a U-shaped cross section, and the upper end of the rail member 6 includes a damper means A (see FIG. 7C) including a damper member described later. A diverging receiving portion 6b (see FIG. 1) that is easy to fit is formed. The lower end of the rail member 6 extends to the lower edge of the water inlet 5. The rail member 6 does not have to have a U-shaped cross section, and a cross-sectional shape (for example, I-type) that can be safely and reliably conveyed while guiding the damper means A so as not to deviate from the rail member. Any form may be used as long as it has a function capable of carrying.

  As shown in FIG. 5, a stopper plate 6 g that connects the lower ends of the rails 6 a is provided along the lower edge of the lower edge of the water inlet 5. The stopper plate 6g defines a position where the damper means A described later engages with the stopper plate 6g to reach the lowest end of the rail 6a. When the damper means A reaches the lowermost end and sits on the stopper plate 6g, the damper means A faces to close the water inlet 5. The stopper plate 6g may be appropriately provided with shock relaxation means such as a synthetic resin buffer rubber or a metal spring.

  A rail 6a is disposed at the vertical edge of the water inlet 5. At this time, a bracket 6e welded along the outside of the rail 6a is attached to the wall surface of the dam 1 of the water level tower 2 by fastening the anchor bolt 6c. Fixed to. As a result, the vicinity of the lower end of the rail member 6 is fixedly disposed on the vertical edge of the water inlet 5 with the bracket 6c interposed.

  Moreover, the rail member 6 existing above the water inlet 5 is welded by spanning a flat plate 6d between a pair of rails 6a (see FIG. 3). The horizontal plates 6d are arranged at predetermined intervals in a ladder shape in the vertical direction, and are fixed by fastening bolts 6f so that the horizontal plates 6d are in close contact with the wall surface of the water level tower 2. Thus, the rail member 6 is firmly laid on the outer wall surface of the water level tower 2.

  Next, the damper means A will be described. The damper means a is an opening / closing means for opening and closing the water inlet 5 while being guided by the rail member 6, and as shown in FIG. 8, for example, an iron plate-like member (hereinafter referred to as “iron plate”) 10. And a damper member B composed of the buffer member 11 and a box 12.

  The box 12 has a function as a frame for accommodating the damper member B, and is formed to be vertically movable while being guided by being inserted into the U-shaped groove of the rail member 6. The material of the box 12 is formed of, for example, a corrosion-resistant metal material such as stainless steel in consideration of rust prevention. The basic form is hollow inside and has a rectangular parallelepiped appearance (the upper surface is a storage port). A plurality of holes (nine in this embodiment) 12a capable of conducting water through water are formed only on the surfaces (both front and back surfaces) facing the water inlet 5.

  Further, the iron plate 10 has a predetermined mechanical strength and is formed in a substantially quadrangular shape so as to be housed inside the front and back surfaces of the box 12. On the surface facing the water inlet 5, nine holes 10a having the same size as the holes 12a are formed at positions corresponding to the holes 12a of the box 12. Thereby, the hole 12a by the side of the box 12 and the hole 10a by the side of the iron plate 10 are connected. The size of the hole 10a and the hole 12a is set to a shape that can suppress the influence of waves to a minimum.

  The buffer member 11 has substantially the same planar shape as the iron plate 10 and is used so that both surfaces thereof are sandwiched between a pair of iron plates 10. The buffer member 11 has a predetermined thickness, and its material element has water permeability, that is, permeability, and, for example, a fibrous metal having corrosion resistance such as asbestos and stainless steel is consolidated into a cotton shape. Wood fiber, synthetic fiber, non-woven fabric, etc. that have been defibrated, such as wood, sponge material, porous cement material, stone material, chip-like bamboo charcoal, charcoal, charcoal, activated carbon, etc. Or the thing of the aspect shape | molded by mixing and compressing these elements is used. Since both surfaces of the buffer member 11 are sandwiched between the iron plates 10, the mold deformation of the buffer member 11 can be prevented and the durability can be improved. In addition, the filling amount of each element can be changed and adjusted in accordance with the amount of water to be transmitted and the degree of water contamination.

As shown in FIG. 8, a lid 13 made of a corrosion-resistant metal material such as stainless steel is fastened to the opening surface above the box 12 by fastening a bolt 13b, as in the case of the box 12 body. Attached to the box 12. When the lid 13 is fastened with the bolt 13b after the iron plate 10 and the buffer member 11 are housed, the iron plate 10 and the damper member B are placed on the box 12 as shown in FIGS. 6, 7A, and 7B. The damper means A is configured in a state where it is not present.
As shown in FIG. 7 (c), the damper means A configured in this way allows the hole 10 a of the iron plate 10 and the hole 12 a of the box 12 to communicate directly with the water inlet 5 by the presence of the buffer member 11. Cut off. Thereby, the waves can be buffered by the buffer member 11. Moreover, although only water is made to flow by the buffer member 11, dirt and dust such as mud and sand are supplemented and prevented from flowing into the water inlet 5.

  By the way, a wire coupling portion 13 a is provided on the upper surface of the lid 13, and is connected to a wire 15 wound around a hand-winding type winding means (manual winch) 14 installed in the water level observation chamber 3. The winch 14 may be an electric drive type. The damper means A can be moved up and down along the rail member 6 by the winding means 14. That is, when the damper means A is at the lowermost position of the rail member 6, it is automatically positioned by the stopper plate 6g and faces the opening of the water inlet 5 (see FIGS. 3 and 6). When the damper means A is wound up by the manual winch 14 from this state, the water inlet 5 is fully opened as shown in FIG.

  A usage mode of the first embodiment will be described. The unitized damper means A is fitted into a U-shaped groove of the rail member 6, suspended by a wire 15 and connected to the manual winch 14. The damper means A is lowered along the rail member 6 by the manual winch 15. This operation can be freely performed in either a state where the dam water is not drained or a state where the dam water is drained. The damper means A reaches its lowest end along the U-shaped groove of the rail member 6 by its own weight, and sits on the stopper plate 6g. The damper means A is disposed at a position to cover the water inlet 5 in the open state (see FIGS. 3 and 6). On the contrary, when the damper means A is wound up by the manual winch 15, the damper means A is pulled up, and the water inlet 5 is fully opened and opened as shown in FIG. It becomes possible to discharge to the outside by the water pressure of the water stored in the water level measuring tank 4 and clean it. On the other hand, the rolled up damper means A can be maintained on the land.

  The operation of the first embodiment will be described. That is, as shown in FIG. 6 and FIG. 9, when the damper means A is lowered to a position where it closes the water inlet 5, the damper means A is operated in a state of facing so as to cover the entire surface of the water inlet 5. It is set without requiring. For this reason, it becomes possible to set without requiring the work of fastening the damper means A with an anchor bolt as in the prior art.

  In the set state, the damper means A is fitted in the rail groove of the U-shaped cross section of the rail member 6, so the lid 5 is closed so as to close the water inlet 5 with almost no play even if it receives external force due to waves. Maintain the state to do. For this reason, the dam water W side and the water inlet 5 side communicate with each other via the hole 12 a of the box 12, the hole 10 a of the damper member B, and the buffer member 11. Thereby, the water level in the water level measuring tank 4 becomes the same as the water level of the dam water W. Further, the presence of the damper means A can buffer the waves, and at the same time, the presence of the buffer member 11 can prevent earth and sand from flowing into the water level measuring tank 4. Therefore, response delay of the water level gauge 7 can be prevented, the measurement accuracy by the water level gauge 7 can be improved, and smooth dam operation can be executed.

  On the other hand, when the maintenance inspection around the water inlet 5 is performed, the damper means A is pulled up by the manual winch 14 and the water inlet 5 is opened as shown in FIG. Then, earth and sand, dust, etc. accumulated in the water inlet are forcibly washed out to the outside by the water flowing out from the water level measuring tank 4 and can be automatically cleaned.

  Further, the damper means A that has been wound up can remove dirt, dust, and the like adhering to the box 12 body on land, and the addition and adjustment of the buffer member 11 corresponding to the response state of the water level gauge 7 can be performed. In addition, it is possible to change the holes 12a and 10a of the iron plate 10 to those appropriately changed in size. After the maintenance / inspection work is completed, the water level measurement can be resumed by incorporating it into the damper means A again and setting it down to the water inlet 5 along the rail member 6 by the manual winch 14.

[Second Embodiment]
A second embodiment will be described with reference to FIGS. That is, in the first embodiment, the box 12 is slid along the rail member 6, but in the second embodiment, the box 20 having the bottom is placed on the wall of the water level tower at a position facing the water inlet 5. The structure is such that only the damper member B1 is slid onto the rail member 6 and can be stored in the box 20. More specifically, as shown in FIG. 10, the box 20 has substantially the same structure as the box 12 of the first embodiment, and forms a pair of front and back surfaces facing the water inlet. The plate part 21 to be welded to the rail 6a is formed in a box shape. The plate portion 21 is provided with a plurality of (for example, nine) holes 21a for allowing a plurality of water to pass therethrough as in the first embodiment. A bracket 6e is welded to the outside of the rail 6a and is fixed by an anchor bolt 6c. Thus, the box 20 is fixed to the outer wall of the water level tower 2 integrally with the rail member 6, and a damper member B <b> 1 described later can be smoothly inserted into and extracted from the box 20.

  On the other hand, as shown in FIGS. 11 and 12, the damper member B1 that can be inserted into and removed from the box 20 includes an iron plate 22 and a buffer member having the same structure as the iron plate 10 and the buffer member 11 of the first embodiment. 23, and the iron plate 22 is formed with a plurality of holes 22a. The hole 22 a is provided so as to correspond to the hole 21 a provided in the box 20. The buffer member 23 is sandwiched between two iron plates 22 to form a unit body 24. The frame member 24 is fitted on the outer periphery of the unit body 24.

  The frame member 25 has a frame shape as a whole, and is provided with a bottom side portion 25a having a U-shaped cross section that fits into the bottom portion of the unit body 24, and is provided rotatably on the bottom side portion 25a via a hinge 25b. The side portion 25c of the U-shaped cross section fitted to the side edge portion of 24 and the upper side portion 25d of the U-shaped cross section fitted so as to cover the upper portion of the unit body 24 are formed. The upper side portion 25d is formed with a wire coupling portion 25e and bent side portions 25f that are bent upward at both ends. The bent side portion 25f is provided with a bolt fastening hole 25f1 that matches the bolt fastening hole 25c1 provided at the upper end of the side portion 25c.

  To assemble the damper member B1, the frame member 25 is fitted on the outer periphery of the unit body 24, the bolt fastening holes 25c1 and 25f1 are matched, and fastened with a bolt (not shown). Thereby, as shown in FIG. 11, the damper member B1 is assembled as a unit.

  According to the said 2nd Example, it couple | bonds with the wire coupling | bond part 25e of the damper member B1 unitized through the wire 8 (refer FIG. 1), and it fits in the rail member 6 shown in FIG. Thus, the damper member B1 is suspended by the wire 8 and is slid downward by the manual winch 14. When the damper member B1 is housed in the box 20, it reaches the lowermost position of the rail member 6 and the water inlet 5 (see FIG. 5) is closed. At this time, the hole 21a of the box 20 is substantially in communication with the hole 22a of the damper member B1 and is in a communicating state. When performing maintenance and inspection of the water inlet 5, only the damper member B <b> 1 is extracted from the box 20 by the manual winch 14 and pulled up. Thereby, the frame member 25 is removed from the damper member B1 and disassembled, and maintenance of the iron plate 22 and the buffer member 23 can be performed, and earth and sand collected from the water inlet 5 can be forcibly discharged to the outside. Further, it is possible to eliminate the work of removing the anchor bolt 6c at every maintenance inspection, and the maintenance inspection can be carried out smoothly.

  In the second embodiment, the box 20 is integrally attached to the rail member 6, but instead, as shown in FIG. That is, the box 30 is provided with holes 30a so as to correspond to the holes 22a of the damper member B1, the brackets 31 are welded and attached to both sides thereof, and anchor bolts 32 are attached to the outer wall (weir) 1 around the water inlet 5 there. Fasten and secure. The opening above the box 30 is discontinuous with the lower end of the rail member 6, but there is a gap that allows the damper member B1 to move smoothly between the rail member 6 and the box 30 without deviating. Therefore, this modification also has substantially the same effect as the second embodiment.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the scope of the invention.

  For example, the holes 12a, 21a, 30a provided in the box in the first embodiment, the second embodiment, and the modifications thereof are substantially the same diameter as the holes 10a, 22a provided in the iron plate, and both in the vertical direction. Although the structure is such that the holes are in communication with each other, instead of this, as shown in FIGS. 14A and 14B, a structure may be adopted in which the positions of the holes are shifted. That is, the hole diameters of the hole H1 provided on the box side and the hole H2 provided on the iron plates 10 and 22 side are set to substantially the same inner diameter. The vertical position of the hole H1 on the box side is left as it is, and only the hole H2 on the iron plate 10 and 22 side disposed inside is formed so as to be offset in the vertical direction. Further, as shown in FIG. 14C, an embodiment in which the inner diameter of the hole H2 on the iron plate side is made smaller than that of the hole H1 on the box side is also possible. With such a modification, the response characteristics with respect to fluctuations in the water level can be finely adjusted according to the response state of the water level gauge.

  Moreover, in each said Example and each modification, although it was made to pinch | interpose from both sides of the buffer members 11 and 23 by using two iron plates for damper members B and B1, one iron plate is used, It goes without saying that this may be provided on the surface on either side of the buffer members 11 and 23.

  In the first embodiment, the structure in which the box 12 for housing the damper member B is provided has been described. However, if the damper member B1 having the mode shown in FIGS. It may be. According to this, a box can be omitted and the number of parts can be reduced.

  Moreover, when providing the iron plate 12 on both surfaces of the buffer member 11, the magnitude | size, the number, and arrangement | positioning of the hole 12a provided in each iron plate 12 may be made into a mutually different aspect. This makes it possible to adjust measurement accuracy.

  The water introduction device for the water level measurement water inlet of the present invention is not only a water level tower that performs dam water management, but also a water intake tower at the river water intake, a drain tower that discharges inland drainage into the river, and river flood control management. It can also be installed and used in a reservoir water level tower, a water level management tower in a water and sewage reservoir, or a seawater intake for cooling water intake in a nuclear power plant.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external appearance front view which shows the schematic structure in which the water guide apparatus of the water inlet for water level measurement in 1st Example of this invention is installed. It is an external appearance side view of FIG. It is an enlarged front view in the E section of FIG. (A) is sectional drawing in the FF line | wire of FIG. 3, (b) is sectional drawing in the GG line | wire of FIG. It is an external appearance expansion perspective view which concerns on 1st Example and shows the water inlet in an open state. It is a figure similar to FIG. 6, and is an external appearance expansion perspective view explaining the state which the damper means closed the water inlet. (A) is a front view of a damper means, (b) is a plan view of (a), and (c) is a longitudinal sectional view of a damper member. It is the external appearance perspective view which assembled and disassembled and showed the structure of the damper means. It is an action explanatory view showing the 1st example typically with a sectional view and explaining the action. It is an external appearance perspective view of the rail member lower end in 2nd Example. It is an external appearance perspective view of the damper member in 2nd Example. It is an external appearance perspective view which assembles and decomposes | disassembles and demonstrates the structure of the said damper member of 2nd Example. It is an external appearance perspective view similar to FIG. 10 which shows the modification of 2nd Example. It is a longitudinal cross-sectional view of the modification in the assembly structure of a box and a damper member. It is sectional drawing which shows schematic structure of the conventional apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Barrage 2 Water level tower 3 Water level observation room 4 Water level measurement tank 5 Water inlet 6 Rail member 6a Rail 6c Anchor bolt 6e Bracket 6f Fastening bolt 6g Stopper plate 7 Water level gauge 8 Wire 10 Iron plate (plate-like member)
10a hole 11 buffer member 12 box 12a hole 13 lid 13a wire coupling part 13b bolt 20 box 21 plate part 21a hole 22 iron plate (plate-like member)
22a hole 23 buffer member 24 unit body 25 frame member 25a bottom side part 25b hinge 25c side side part 25d upper side part 30 box 30a hole 31 bracket 32 anchor bolt A damper means B, B1 damper member H1, H2 hole W dam water

Claims (7)

  A rail member is laid to the vicinity of the water inlet that leads to the water level measuring tank, and a damper member that moves up and down by the winding means is provided along the rail member, and when the damper member is lowered, the rail member is closed to face the water inlet. When installed and raised, the water inlet is formed so as to be opened, and the damper member is a metal plate having a plurality of holes for introducing water on the surface facing the water inlet. A water guide device for a water level measurement inlet, comprising: a member; and a buffer member attached to the plate-like member and allowing only water flow.   The water guide device for a water level measurement inlet according to claim 1, wherein the buffer member of the damper member is formed in an integral sandwich structure sandwiched between a pair of the plate members.   3. The damper member according to claim 1, wherein the damper member is formed in a damper unit that is detachably housed and integrated in a metal box having a hole communicating with the hole of the plate-like member. Water guide device for water level measurement.   The metal box that houses the damper member is fixed so as to close the water inlet at a position facing the water inlet at the bottom of the rail member, and the damper member is housed in the box. 3. A water guide device for a water level measurement inlet according to claim 1, wherein a hole communicating with the hole of the plate-like member is formed.   5. The water guide for a water level measurement inlet according to claim 1, wherein the hole provided in the plate-like member is provided so as to shift a position of the hole provided in the box. apparatus.   A rail member laid to the vicinity of the water inlet that leads to the water level measuring tank, and provided so as to be movable up and down along the rail member, and installed so as to close the water inlet when lowered to a position facing the water inlet. The damper means includes a box provided with a plurality of holes for guiding water on a surface that closes the water inlet, and is detachably accommodated in the box, and is placed in a position corresponding to the hole. A pair of metal plates formed with a plurality of holes for guiding water, and a damper member provided between the pair of metal plates and formed by a buffer member that buffers waves and allows only water to flow. A water guiding device for a water level measurement water inlet, characterized by that.   A rail member laid to the vicinity of the water inlet that leads to the water level measuring tank, a plurality of holes that are fixed so as to face the position that closes the water inlet at the bottom of the rail member, and that guides water to the surface that faces the water inlet. A box provided and a damper member formed so as to be movable up and down along the rail member and housed in the box when reaching a lowered position, and the damper member corresponds to a hole of the box A pair of metal plates formed with a plurality of holes for conducting water at positions where the water flows, and a buffer member provided between the pair of metal plates so as to buffer waves and allow only water flow A water guiding device for a water level measuring water inlet, characterized in that

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