JP2012154146A - Water quantity identification device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water quantity identification device capable of easily determining a present water quantity without taking costs or a construction period relatively in the case of illuminating the inside of a dark water storage tank or the like with an electric lamp and looking into it from above.SOLUTION: A representative water quantity identification device 120 of this invention includes: a housing 122 fixed to a step 110a of an elevating and lowering ladder 110 provided on water's edge; an observation window 124 set to the side face upper part or upper surface of the housing 122; a float part 126 having a property of floating on water and housed inside the housing 122; and a scale part 128 connected to the float part 126 and provided with the notation of the water quantity corresponding to the step 110a to which the housing 122 is fixed. The float part 126 is seated on the bottom surface of the housing 122 when it is not present in the water, and the float part 126 is floated from the bottom surface of the housing 122 so that the notation of the scale part 128 is visually recognized from the observation window 124 when it is present in the water.

Description

  The present invention relates to a water amount identification device for identifying the amount of water in a water storage tank or the like.

  There are many water tanks in the power plant. For example, as described in paragraphs 0031 to 0035 of FIGS. 7 and 8 and FIGS. 7 and 8, a rainwater drainage tank and a wastewater treatment fresh water tank are provided. Since water appropriately flows into these tanks, workers are monitoring according to the situation so that water does not overflow at the site.

  Specifically, an operator opens a manhole that seals the target tank and illuminates the inside of the tank with an electric light from above to check the amount of water (water level). In addition, the water which flowed into these tanks is finally drained to the open ocean after checking the pH value and mixing of oil and treating it appropriately.

JP-A-7-184523

  However, since the inside of the rainwater drainage tank and the wastewater treatment fresh water tank is very dark, it was difficult to grasp the position (water volume) of the water surface even if the inside of the tank was illuminated with an electric light from above. Even if the position of the water surface could be grasped, the water volume notation (scale) was not set in these tanks, so the specific water volume could not be determined.

  Here, it is also conceivable to perform a construction for drawing or attaching a scale notation of the amount of water on the wall surface of an existing tank. However, when this construction is performed, it is necessary to empty the tank (stop operation), and it is also necessary to build a scaffold in a narrow and deep tank, which requires a lot of cost and construction period. Become. Also, even if this construction is done, it is not possible to improve the difficulty of grasping the position of the water surface, so in the first place it is difficult to understand which water amount to read and it does not lead to a fundamental solution .

  Under such circumstances, there is a need for a new technology that can easily determine the current amount of water in these tanks without relatively cost or construction. In addition, sludge accumulates or moss is generated in these tanks for the purpose of use, so it is not possible to introduce a precision device (such as an electric measuring instrument) that may cause a failure.

  The present invention has been made in view of the above-described problems. When the interior of a dark water tank or the like is illuminated with an electric light and viewed from above, the current amount of water can be easily determined without relatively cost or construction time. An object of the present invention is to provide a water quantity identification device that can perform such a process.

  In order to solve the above problems, a representative configuration of a water amount identification device according to the present invention includes a housing fixed to a step of an elevating ladder provided on a water line, and a viewing window set on an upper side or upper surface of the housing. The float part has the property of floating in water, and is provided with a float part accommodated in the housing, and a scale part connected to the float part and having a notation of the amount of water corresponding to the step in which the housing is fixed, and does not exist in water In the case, the float portion is seated on the bottom surface of the housing, and when the float portion is present in water, the float portion is lifted from the bottom surface of the housing so that the notation of the scale portion is visible from the viewing window. .

  According to the above configuration, the float portion is seated on the bottom surface of the housing when it does not exist in the water, and when it is present in the water, the notation of the scale portion is from the viewing window set on the upper side or the top surface of the housing. As can be seen, the float rises from the bottom of the housing. That is, only when the water amount identification device is present in water, the notation of the scale portion is visually recognized from above. Therefore, even if it is impossible to figure out where the water surface is when looking into the interior of a dark water tank etc. with an electric light and looking into it from above, the specific amount of water based on the notation visible from above Can be judged.

  Specifically, if a water amount identification device is attached to the steps of the raising and lowering ladders at regular intervals, it is possible to determine that the current water amount has reached the notation of the scale portion visually recognized on the front side (upper side). it can. Therefore, the current amount of water can be determined very easily.

  In addition, since the water amount identification device has a simple structure using buoyancy, maintenance and maintenance are unnecessary, and the water amount identification device can be applied to a storage tank of a power plant where contamination is a concern. Since such a water amount identification device (housing) has only to be fixed to a step of a raising / lowering ladder such as a water storage tank or the like, there is no cost or construction period.

  The notation of the scale part may be described with a fluorescent paint. As a result, when the interior of a dark water tank or the like is illuminated with an electric light and viewed from above, the indicated fluorescent paint reflects on the electric light, so that the current amount of water can be determined more easily.

  An opening may be provided on the bottom surface of the housing. Thereby, it is possible to allow water to flow into the interior of the housing and to float the float portion.

  A guide piece for guiding the float portion when the float portion is lifted may be further provided inside the housing. Thereby, when the water amount identification device is present in water, the float portion can be lifted to a position suitable for visual recognition from above the notation of the scale portion through the viewing window.

  The float part may be rotatably connected to the housing. This also makes it possible to float the float part at a specific position so that the notation of the scale part is easily visible from above when the water amount identification device is present in water.

  The water amount identification device is attached to a step of a raising / lowering ladder provided in a water tank of a power plant, and may be used for identifying the water amount of the water tank. In particular, by applying this water amount identification device to a water storage tank of a power plant, it is possible to achieve a remarkable effect.

  ADVANTAGE OF THE INVENTION According to this invention, when illuminating the inside of a dark water tank etc. with an electric light and peeping from upper direction, it can provide the water quantity identification apparatus which can judge the present water quantity easily without taking comparatively cost and a construction period. Since this water quantity identification device has a simple structure using buoyancy, it does not require maintenance or maintenance unlike an electric measuring instrument, and can be applied to a place where contamination is a concern.

It is the schematic of the water storage tank to which the water quantity identification device concerning the 1st Embodiment of this invention is applied. It is the figure which attached the water quantity identification apparatus to the step of the raising / lowering ladder of the water storage tank of FIG. It is a bottom view of the water quantity identification device of FIG. It is sectional drawing explaining the case where the water quantity identification device of FIG. 2 does not exist in water, and the case where it exists in water. It is the figure which showed a mode that the manhole cover of FIG. 1 was opened and the inside of a water storage tank was looked into. It is a figure explaining the water quantity identification device concerning the 2nd Embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

[First embodiment]
FIG. 1 is a schematic view of a water storage tank 100 to which a water amount identification device 120 according to the first embodiment of the present invention is applied. As shown in FIG. 1, water flows into the water storage tank 100 through the inflow pipe 102, and water is discharged through the drain pipe 104 by the pump 106. The water storage tank 100 is sealed with a manhole cover 108, and an elevating ladder 110 is installed immediately below the manhole cover 108. In addition, a vent pipe 112 is provided for ensuring ventilation so that the inside of the water storage tank 100 is not sealed.

  FIG. 2 is a diagram in which the water amount identification device 120 is attached to the step 110a of the raising and lowering ladder 110 of the water storage tank 100 of FIG. 1 (in FIG. 2, the notation of the scale portion 128 is visually recognized assuming that the water amount is present in water. As shown). FIG. 3 is a bottom view of the water amount identification device 120 of FIG. FIG. 4 is a cross-sectional view illustrating a case where the water amount identification device 120 of FIG. 2 is not present in water and a case where it is present in water, and FIG. This corresponds to a cross-sectional view, and FIG. 4B corresponds to the cross-sectional view taken along the line AA in FIG. Here, step 110a is formed by bending a round bar-like member into a substantially U-shape.

  As shown in FIGS. 4A and 4B, the water amount identification device 120 according to the first embodiment includes a housing 122, a viewing window 124, a float portion 126, a scale portion 128, and a guide piece 130. Consists of including. The housing 122 is made of stainless steel or the like having high corrosion resistance, and is fixed to the round bar-shaped step 110a of the elevating ladder 110 by a fixing band 132 (see FIG. 2). A viewing window 124 that is cut out in a rectangular shape is set on the upper or upper side surface of the housing 122.

  The float portion 126 has a property of floating in water, and is accommodated in the housing 122 so as to be vertically movable. The scale part 128 is connected to the upper part of the float part 126 and has a notation of the amount of water corresponding to the step 110a where the housing 122 is fixed. Such notation is written in fluorescent paint.

  As shown in FIG. 3, the bottom surface of the housing 122 is provided with a plurality of holes 122a (in the figure, one is given a reference symbol) through which water can enter and exit as openings. As a result, when the water amount identification device 120 is submerged, water can preferably flow into the housing 122 and the float 126 can be lifted. Here, a plurality of holes 122a are provided as openings, but the present invention is not limited to this. For example, like a net or a fence, the flow of water is good, and the float part 126 falls off from the bottom surface of the housing 122. Any structure can be used. In this case, the gap between the net and the fence corresponds to the “opening”.

  The guide piece 130 guides the float portion 126 when the float portion 126 is lifted. By providing the guide piece 130, when the water amount identification device 120 exists in the water, the float portion 126 can be lifted to a suitable position so that the notation of the scale portion 128 can be visually recognized from above through the viewing window 124. it can.

  Hereinafter, the case where the water amount identification device 120 does not exist in water and the case where it exists in water will be compared. As shown in FIG. 4A, when the water amount identification device 120 is not present in the water (when the water surface WL is lower than the water amount identification device 120), the float portion 126 is seated on the bottom surface of the housing 122. Therefore, the notation of the scale portion 128 is not visually recognized from above through the viewing window 124.

  On the other hand, as shown in FIG. 4B, when the water surface WL rises and the water amount identification device 120 is submerged, water flows in from the plurality of holes 122a on the bottom surface, and the float portion 126 receives buoyancy from the water. Then, while being guided by the guide piece 130, it floats upward from the bottom surface of the housing 122, and finally reaches a position where the notation of the scale portion 128 is visually recognized from above through the viewing window 124.

  When the water surface WL descends from the state shown in FIG. 4B (the state existing in water) and the water amount identifying device 120 is exposed, the float 126 is seated on the bottom surface of the housing 122 again. That is, the state returns to the state shown in FIG.

  FIG. 5 is a view showing a state in which the manhole cover 108 of FIG. 1 is opened and the inside of the water storage tank 100 is looked into. In addition, each water quantity identification apparatus 120a-120g in FIG. 5 shall have the structure similar to the water quantity identification apparatus 120 mentioned above. As for the step 110a of the raising / lowering ladder 110, a symbol is attached to one representative.

  FIG. 5A illustrates a case where the water amount identification devices 120a to 120g are not attached to the step 110a, and FIG. 5B illustrates a case where the water amount identification devices 120a to 120g are attached to the step 110a. . 5 (a) and 5 (b) are simplified for easy understanding, and the notation of each of the water quantity identification devices 120a to 120g and the number of steps 110a are merely schematic. .

  As shown in FIG. 5 (a), in a water storage tank 100 (rainwater drainage tank or drainage treatment freshwater tank) of a power plant, conventionally, an operator P1 opens a manhole cover 108 according to the situation so that water does not overflow. Then, the interior was illuminated with the electric lamp 114 from above and monitored. However, since the inside of the water storage tank 100 is very dark, it is difficult to grasp the position (water volume) of the water surface WL even if the inside of the tank is illuminated with the electric lamp 114 from above. Even if the position of the water surface WL can be grasped, the water amount is not set in such a tank (it is not described on the wall surface), so the specific water amount cannot be determined. It was.

On the other hand, as shown in FIG. 5B, when the water amount identifying devices 120a to 120g are attached to the step 110a at regular intervals (heights), the water amount identifying devices 120a to 120d that are not present in the water are viewed from above. The notation is not visually recognized through the viewing window 124, and only the water amount identifying devices 120e to 120g existing in the water are visible through the viewing window 124 from above. Accordingly, when the interior of the dark water tank 100 is illuminated with the electric lamp 114 and viewed from above, it is visually recognized on the front side (upper side) even if it is not possible to grasp where the water surface WL is located. It can be determined that the current amount of water has reached the indication of the water amount identification device 120e. In FIG. 5B, it can be determined that the current amount of water has reached 15 m ³ .

  In particular, these notations are written in fluorescent paint. Thereby, when the inside of the dark water storage tank 100 is illuminated with the electric lamp 114 and is viewed from above, the indicated fluorescent paint is reflected by the light of the electric lamp 114. Therefore, the notation of the water amount identification devices 120e to 120g existing in the water can be easily recognized.

  If it is difficult to visually recognize the inside of the observation window 124 from above, the angle (attachment angle) at which the housing 122 is fixed by the fixing band 132 may be adjusted. In short, the housing 122 may be fixed to the step 110a with the fixing band 132 while the housing 122 is inclined upward.

  From the above, according to the water amount identification devices 120a to 120g according to the first embodiment, the current water amount can be determined very easily. The water amount identification devices 120a to 120g have a simple structure that uses buoyancy, so that maintenance and maintenance are unnecessary, and the water storage tank 100 of the power plant that may accumulate sludge or cause moss, etc. It can also be applied to.

  In a power plant or the like, the construction wastewater may be temporarily discharged to a specific water tank 100 due to local construction work or the like. Under such circumstances, of course, the worker P1 needs to monitor appropriately so that water does not overflow from the water storage tank 100. However, when construction wastewater is not temporarily discharged into the water storage tank 100, there is almost no risk of water overflowing from the water storage tank 100 (when there is almost no risk of water overflowing in a normal use mode). It is not meaningful to divide the cost and construction period to judge the amount of water.

  Even if it is necessary to temporarily determine (monitor) the amount of water in the water storage tank 100 as described above, the water amount identification devices 120a to 120g are attached to the step 110a simply by fixing the housing 122 with the fixing band 132. (It can be attached and detached with one touch). Since it can be installed without construction work, that is, without cost or construction period, it is possible to cope with such temporary demand.

[Second Embodiment]
FIG. 6 is a diagram illustrating a water amount identification device 220 according to the second embodiment of the present invention. 6A is a cross-sectional view of the water amount identifying device 220 when it is not present in water, and FIG. 6B is a cross-sectional view of the water amount identifying device 220 when it is present in water.

  As shown in FIGS. 6A and 6B, the water amount identification device 220 according to the second embodiment includes a housing 222, a viewing window 224, a float portion 226, a scale portion 228, a hinge shaft 234, The connecting arm portions 236a and 236b are included. The housing 222 is made of stainless steel or the like having high corrosion resistance, and is fixed to the round bar-shaped step 110 a of the elevating ladder 110 by a fixing band 132. An upper plate 222a is provided at the upper part of the housing 222 to restrict the position where the float part 226 is lifted by receiving buoyancy from water when it is present in water. A viewing window 224 cut into a rectangular shape is set on the upper or upper side surface of the housing 222.

  The float portion 226 has a property of floating in water and is accommodated in the housing 222. The scale part 228 is connected to the front part (on the side of the viewing window 224) of the float part 226 accommodated in the housing 222, and has a notation of the amount of water corresponding to the step 110a to which the housing 222 is fixed. Such notation is written in fluorescent paint. It is assumed that a plurality of holes 122a are formed in the bottom surface of the housing 222 as in the first embodiment.

  The hinge shaft 234 is set inside the housing 222, and one ends of the connecting arm portions 236a and 236b are rotatably connected. The other ends of the connecting arm portions 236a and 236b are connected to the float portion 226. As shown in FIG. 6A, the water amount identification device 220 has a float portion 226 seated on the bottom surface of the housing 222 so that the notation of the scale portion 228 is not visible from the viewing window 224 when it is not present in the water. Yes. On the other hand, when it exists in water as shown in FIG.6 (b), the float part 226 floats from the bottom face of the housing 222, and the float part 226 and the connection arm parts 236a and 236b rotate upward, The notation of the scale part 228 is visually recognized from the viewing window 224. Therefore, also in the second embodiment, it is possible to achieve the effects described in the first embodiment.

  The first embodiment and the second embodiment according to the present invention have been described above with reference to the accompanying drawings. The water amount identification devices 120 and 220 according to the present embodiment have a remarkable effect when applied to the water storage tank 100 of the power plant, but are not limited thereto. The present invention can be applied to the case where the amount of water is judged from above in a dark situation, and can be attached to a lifting ladder provided on a water tank such as a water tank or a revetment of a general building.

  That is, the present invention is not limited to the example of the above embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  INDUSTRIAL APPLICABILITY The present invention can be used as a water amount identification device that identifies the amount of water in a water storage tank or the like.

P1 ... worker, WL ... water surface, 100 ... water tank, 102 ... inflow pipe, 104 ... drainage pipe, 106 ... pump, 108 ... manhole cover, 110 ... elevating ladder, 110a ... step, 112 ... vent pipe, 114 ... electric light , 120 (120a to 120g), 220 ... Water quantity identification device, 122, 222 ... Housing, 122a ... Hole, 222a ... Upper plate, 124, 224 ... Viewing window, 126, 226 ... Float part, 128, 228 ... Scale part, 130 ... Guide piece, 132 ... Fixed band, 234 ... Hinge shaft, 236a ... Connection arm, 236b ... Connection arm

Claims (6)

A housing fixed to the step of the ladder provided on the water line,
A viewing window set on the upper or upper side of the housing;
A float that has the property of floating in water and is housed inside the housing;
A scale part connected to the float part and having a notation of the amount of water corresponding to the step in which the housing is fixed;
If not present in the water, the float is seated on the bottom of the housing,
When present in water, the water amount identifying device is characterized in that the float portion is lifted from the bottom surface of the housing so that the notation of the scale portion is visible from the viewing window.   The water amount identification device according to claim 1, wherein the notation of the scale portion is described with a fluorescent paint.   The water amount identification device according to claim 1, wherein an opening is provided on a bottom surface of the housing.   The water amount identification device according to any one of claims 1 to 3, further comprising a guide piece that guides the float unit when the float unit floats inside the housing.   The water amount identification device according to any one of claims 1 to 4, wherein the float portion is rotatably connected to the housing.   The said water quantity identification apparatus is attached to the step of the raising / lowering ladder provided in the water tank of the power station, and is used for the identification of the water quantity of this water tank, The any one of Claim 1 to 5 characterized by the above-mentioned. The water quantity identification device according to item.

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