JP4677648B2 - Water quality measuring device - Google Patents

Description

  The present invention relates to a water quality measurement device, and more particularly to a water quality measurement device that measures a difference in water quality due to a difference in water quality or a difference in water depth at a plurality of positions in water.

  Conventionally, a water quality measuring device has been used when measuring the water quality of a sea or a lake. The water quality measuring device measures water quality at a predetermined position in water using a dedicated sensor or the like. And it can grasp | ascertain environmental conditions, such as a sea and a lake, by measuring water quality regularly and performing various analysis etc. from measurement data.

  When water quality is measured by a water quality measuring device, water quality is usually measured at a large number of locations, and depending on the water depth at each location. As a method of measuring the water quality at a plurality of positions in this way, for example, the water quality measurement sensor is automatically submerged to a predetermined position in water each time, and the water quality is measured, or a plurality of water qualities are previously measured at a predetermined water depth. It is conceivable to install a measurement sensor to measure water quality. However, this complicates the configuration, makes maintenance and inspection work complicated, and tends to cause errors in measurement data.

In view of this, an apparatus is used in which water intake mechanisms are installed in advance at a plurality of positions in water, and water quality is always measured by taking water from the same location (see, for example, Patent Document 1).
JP 2005-55238 A

  The water quality measuring device described in Patent Document 1 includes a plurality of intakes at predetermined positions in water, takes water from each intake, and sends the water to a predetermined water quality measuring instrument to measure the water quality. .

  However, in such a configuration, since the intake and the inside of the water pipe (hereinafter referred to as the intake, etc., as appropriate) are always immersed in water, algae and the like are likely to adhere to the intake, etc. May become clogged or impurities may be mixed into the water taken in. Therefore, in order to secure the amount of water intake and to obtain accurate data, the intake port and the like must be frequently cleaned, resulting in an increase in the number of maintenance.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a water quality measuring device that can reduce the number of maintenance operations, obtain highly reliable water quality data, and has a simple configuration. And

In order to achieve the above object, a water quality measuring device according to claim 1 is a water quality measuring device for measuring water quality, at least one air chamber provided at a predetermined position in water, and each of the air By adjusting the amount of air in the air chamber by adjusting an intake port provided in the room, a water supply pipe connecting the intake port and the water quality measuring device, water in the air chamber is maintained until the intake port is immersed in water. In addition, after the water quality is measured by the water quality measuring device , the air amount adjusting unit for discharging the water in the air chamber and filling it with air, and the water introduced into the air chamber by the air amount adjusting unit. And a water feeding means for feeding the water quality measuring instrument from the intake through the water feeding pipe.

That is, the invention according to claim 1 immerses the intake etc. in water only at the time of water quality measurement and normally keeps the intake etc. in the air. Can be reduced.
In addition, since algae or the like hardly adhere to the intake port or the like, impurities can hardly be mixed with the sucked water, and accurate water quality can be measured, and highly reliable data can be obtained.

  In addition, since the intake port is fixed at the measurement position, the water quality at the same position can always be measured, and the water quality can be measured more accurately.

  Further, if there are a plurality of air chambers, the intakes and the like can be kept clean even though there are a plurality of intakes and the number of maintenance can be remarkably reduced. That is, the effect of this water quality measuring device increases as the number of air chambers increases.

  In addition, the air chamber should just be gas inside, for example, an inert gas may be sufficient as it.

  Moreover, since the number of water quality measuring devices is sufficient, it becomes a simple and inexpensive device.

The water quality measuring device according to claim 2 is the water quality measuring device according to claim 1, wherein the air chamber has a hollow shape with an open bottom, and water can flow in and out through the opening. cage, the air quantity adjusting unit, said to reduce the amount of air in the air chamber is Torii water inside the opening portion, also intended to discharge water to the outside from the opening portion by increasing the air volume of the air chamber It is characterized by being.

That is, the invention according to claim 2 can realize a simple configuration because water can be taken in and discharged only by adjusting the amount of air in the air chamber.
Note that increasing the amount of air in the air chamber includes supplying various gases into the air chamber, and the supplied gas may be an inert gas.

  The water quality measuring device according to claim 3 is the water quality measuring device according to claim 1 or 2, wherein the water supply means includes a submersible pump in each of the air chambers, and water is supplied from the intake port by the submersible pump. , And water is supplied by pushing up the sucked water to the water quality measuring device.

  That is, in the invention according to claim 3, since the time for the submersible pump to be immersed in water becomes short, algae and the like hardly adhere to the submersible pump, and the number of maintenance can be reduced.

  Further, the water quality measuring device according to claim 4 is the water quality measuring device according to claim 1 or 2, wherein the water supply means includes a suction pump in the middle of the water supply pipe, and the intake pump uses the suction pump. The water is sucked in from the water, and the sucked water is sucked up to the water quality measuring device and sent.

  That is, in the invention according to claim 4, since the suction pump can be provided on the water surface or on the water surface float, algae and the like do not adhere to the suction pump, and the number of maintenance can be reduced.

  In addition, a switching valve may be provided in the water pipe, and the intake may be connected to the water quality measuring device by switching the switching valve. In this way, the number of suction pumps may be one, so that the configuration is simpler and the configuration is inexpensive.

  Moreover, the water quality measuring device according to claim 5 is the water quality measuring device according to any one of claims 1 to 4, wherein the intake port is open downward. And

  That is, in the invention according to claim 5, after the measurement is finished, after the amount of air in the air chamber is increased and the water is discharged, the water remaining in the intake or the like naturally falls and does not remain, so algae adhere Therefore, the number of maintenance can be reduced, and accurate measurement can be performed for a long time.

  Moreover, the water quality measuring device according to claim 6 is the water quality measuring device according to any one of claims 1 to 5, wherein the water quality measuring device includes a water storage tank for storing water to be measured; A water quality measurement sensor for measuring the quality of the stored water provided in the water storage tank, the water storage tank having a water intake port for taking in water sent from the water supply means, and the stored water A drain outlet for discharging the water to the outside, and the intake port is provided above the drain port so that the amount of water taken from the intake port exceeds the amount of water discharged from the drain port. When water is stored and the amount of water stored exceeds a certain level, water is allowed to overflow from the upper part of the opening.

  That is, the invention according to claim 6 can measure the water quality by flowing water into the water storage tank so that water and air are not mixed only by driving the water supply means, and the water supply can be stored naturally only by stopping the drive of the water supply means. Water can be drained from the tank. Therefore, the configuration of the water quality measuring device is simplified and more accurate measurement is possible. In particular, accurate data can be obtained when measuring the dissolved oxygen concentration.

  The water quality measuring device according to claim 7 is the water quality measuring device according to claim 6, wherein the reservoir is formed such that the bottom surface is inclined from the water intake to the drain. .

  That is, the invention according to claim 7 can discharge the water in the water storage tank without leaving it with a simple configuration.

  Moreover, since water does not remain in the water tank, mixing of residual water can be eliminated even in the next measurement, and an accurate water quality can be measured.

  As described above, according to the present invention (Claim 1), the number of maintenance in long-term continuous water quality measurement can be reduced. According to the present invention (Claim 2), a simple configuration can be realized. According to the present invention (Claim 3), the number of maintenance can be reduced. According to the present invention (Claim 4), the number of maintenance can be reduced. In addition, since a plurality of water quality measurements can be performed with a single suction pump, a simpler configuration can be achieved. According to the present invention (Claim 5), the number of maintenance can be reduced, and accurate measurement can be performed for a long time. According to the present invention (Claim 6), the configuration of the water quality measuring device is simplified, and more accurate measurement is possible. According to the present invention (Claim 7), the water in the water storage tank can be discharged without remaining in a simple configuration.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram schematically showing the configuration of the water quality measuring apparatus of the present invention.

  The water quality measuring device 1 is a device installed on the seabed, a lake, or the like, and includes a base 2, a first air chamber 3, a second air chamber 4, a third air chamber 5, an air amount adjusting unit 6, and water quality measurement. A vessel 7 is provided.

  The base unit 2 is installed on the seabed or lake bottom and is a base part of the water quality measuring device 1.

  The first air chamber 3 to the third air chamber 5 are attached to the base part 2, and in water, the first air chamber 3 is located in the upper part, the second air chamber 4 is located in the center part, Three air chambers 5 are located in the lower part. The 1st air chamber 3-the 3rd air chamber 5 are for taking in the water to measure as mentioned later, and are being fixed to the water quality measurement position in water, respectively.

  The air amount adjusting unit 6 is for sending and exhausting air, and one end of each of the first air pipe 8, the second air pipe 9, and the third air pipe 10 is connected thereto. The other end of the first air pipe 8 is connected to the first air chamber 3, the other end of the second air pipe 9 is connected to the second air chamber 4, and the other end of the third air pipe 10 is the third air. Connected to chamber 5. Thus, the air amount adjusting unit 6 adjusts the air amount in each air chamber by sending out or exhausting air through each air pipe. The air amount adjustment unit 6 has a built-in compressed air source such as an air compressor, and sends out compressed air when sending out air. In addition, what the air quantity adjustment part 6 sends out should just be gas, and is not restricted to air. For example, a compressed inert gas may be sent out.

  The water quality measuring instrument 7 is for measuring the water quality, and one end of each of the first water pipe 11, the second water pipe 12, and the third water pipe 13 is connected thereto. The other end of the first water pipe 11 is connected to the first air chamber 3, the other end of the second water pipe 12 is connected to the second air chamber 4, and the other end of the third water pipe 13 is the third air. Connected to chamber 5.

Hereinafter, the structure of each part of the water quality measuring device 1 will be described in detail.
FIG. 2 is a diagram schematically showing the configuration of the first air chamber 3 to the third air chamber 5.

  In addition, since the 1st air chamber 3-the 3rd air chamber 5 are the same structures, in FIG. 2, only one structure was shown in these.

  The 1st air chamber 3-the 3rd air chamber 5 are the hollow shapes which the bottom part opened, and water can flow in / out from the opening part. One end of each of the first air pipe 8 to the third air pipe 10 extends through the upper portions of the first air chamber 3 to the third air chamber 5 and extends slightly to the inside. -It becomes the air port 10a.

  Moreover, as for the 1st water pipe 11-the 3rd water pipe 13, the end penetrates the upper part of the 1st air chamber 3-the 3rd air chamber 5, respectively, and the front-end | tip is the 1st air chamber 3-the 3rd air chamber 5 It is located near the bottom.

  The first water supply pipe 11 has a leading end serving as an intake 11a and is open downward. The first water supply pipe 11 has a first submersible pump 14 attached to the tip portion. The first submersible pump 14 is formed with a pump port 14 a that opens downward, and the intake port 11 a of the first water supply pipe 11 is connected to the pump port 14 a in the first submersible pump 14. .

  Similarly, the tip of the 2nd water supply pipe 12 and the 3rd water supply pipe 13 is the inlet 12a and the inlet 13a, respectively, and it is opening it below, and the 2nd water supply pipe 12 and the 3rd water supply pipe 13 are opened. A second submersible pump 15 and a third submersible pump 16 are respectively attached to the front end portions. The second submersible pump 15 and the third submersible pump 16 have a pump port 15a and a pump port 16a, respectively. The intake port 12a and the intake port 13a are connected to the pump port 15a and the pump port 16a, respectively.

  The first submersible pump 14 to the third submersible pump 16 are pumps for sending out water by pushing it out, and by driving these, water can be sent from each air chamber to the water quality measuring device 7 as described later.

  Normally, the first air chamber 3 to the third air chamber 5 are filled with air, and only a small amount of water has entered the lower portion. And the water surface is located below the 1st submersible pump 14-the 3rd submersible pump 16, respectively. That is, in a normal state, in the first air chamber 3 to the third air chamber 5, the first submersible pump 14 to the third submersible pump 16 and the intake port 11a to the intake port 13a are not immersed in water. ing.

A series of operations in the first air chamber 3 to the third air chamber 5 will be described by taking the first air chamber 3 as an example.
When the air in the first air chamber 3 is exhausted from the air port 8a through the first air pipe 8 by the air amount adjusting unit 6, the amount of air in the first air chamber 3 is reduced, so that the water is opened. The water surface rises. Then, the first submersible pump 14 and the intake port 11a are immersed in water. When the first submersible pump 14 is driven in this state, water is sucked from the pump port 14a and the intake port 11a and is sent out to the water quality measuring device 7 through the first water pipe 11 so as to be pushed out. FIG. 3 shows the first air chamber 3 in this state.

  Next, when compressed air is supplied into the first air chamber 3 from the air port 8a via the first air pipe 8 by the air amount adjusting unit 6, the amount of air in the first air chamber 3 increases, Water is naturally discharged from the opening, and the water surface descends. Then, the first air chamber 3 is almost filled with air, and the intake port 11a is held in the air (see FIG. 2). At this time, since the intake port 11a is opened downward, the water in the intake port 11a and the first water supply pipe 11 naturally falls and does not remain.

  In this way, the first air chamber 3 to the third air chamber 5 are such that water is introduced into or discharged from the air by the air amount adjusting unit 6 being sent or exhausted. To do. And water is sent to the water quality measuring device 7 through the 1st water pipe 11-the 3rd water pipe 13 in the state in which water was taken in inside. The air amount adjusting unit 6 is appropriately provided with a valve, and the air flow is blocked or circulated by the valve.

  FIG. 4 is a diagram schematically showing the configuration of the water quality measuring device 7.

  The water quality measuring device 7 includes a water storage tank 71.

  The water storage tank 71 is a hollow transparent member, ensures visibility from the outside, and can store water inside, and has a first intake 71a to a third intake 71c on the side. The drain outlet 71d is formed in the lower part. The bottom surface is an inclined surface 71e, and an overflow pipe 72 is connected near the top surface. In addition, although illustration is abbreviate | omitted, the water storage tank 71 shall be light-shielded with the box etc. FIG.

  The first water intake port 71 a to the third water intake port 71 c are provided in parallel at the side of the water storage tank 71. The first water intake pipe 11a is connected to the first water intake pipe 71a, the second water intake pipe 71b is connected to the second water supply pipe 12, and the third water intake pipe 71c is connected to the third water supply pipe 13. Is connected.

  The first intake port 71a to the third intake port 71c and the drain port 71d are provided below the first intake port 71a to the third intake port 71c as much as possible while the drain port 71d is positioned below. Is desirable. If it does in this way, it is hard to mix air with the water taken in from the 1st intake 71a-the 3rd intake 71c at the time of water quality measurement, and an accurate water quality measurement can be performed.

  Moreover, it is desirable that the diameter of the first intake port 71a to the third intake port 71c is larger than the diameter of the drain port 71d. If it does in this way, when taking in water in the water storage tank 71 so that it may mention later, the inflow amount tends to become large.

  The drain outlet 71d is formed at the lowermost part of the water storage tank 71, and a drain pipe 74 is connected thereto.

  The drain pipe 74 extends downward, and its tip is not in contact with the water surface of the sea or lake.

  The inclined surface 71e is a bottom surface of the water storage tank 71 and is inclined from the first intake port 71a to the third intake port 71c to the drain port 71d.

  The overflow pipe 72 is for overflowing the water in the water storage tank 71 when a certain amount or more is reached, and its tip is not in contact with the water surface of the sea or lake.

  In addition, a water quality measurement sensor 75 is provided in the water storage tank 71.

  The water quality measurement sensor 75 is a sensor for measuring the water quality of the water stored in the water storage tank 71, and is provided in the upper part of the water storage tank 71.

  When water is stored in the water storage tank 71, the water is stored so that the amount of water taken in exceeds the amount of water discharged from the drain outlet 71d. For example, when water is introduced from the first air chamber 3 into the water storage tank 71 via the first water pipe 11 and the first water intake 71a, water is stored in the water storage tank 71 while being drained from the water discharge opening 71d. Go. Then, when the stored water exceeds a certain amount, the water overflows from the overflow pipe 72. At this time, the water discharged from the drain pipe 74 and the water overflowed from the overflow pipe 72 are discharged to the sea or lake.

  In this way, water is stored in the water reservoir 71, and the water quality measurement sensor 75 measures the water quality. When the water supply from the first air chamber 3 is stopped, the water in the water storage tank 71 is naturally guided to the drain outlet 71d by the inclined surface 71c and discharged from the drain pipe 74.

  As described above, when water is introduced from the first air chamber 3 to the third air chamber 5 into the water storage layer 71 through the first water supply pipe 11 to the third water supply pipe 13, a certain amount of water naturally enters the water storage tank 71. When water is stored and water supply is stopped, water is discharged naturally. In addition, the 1st water pipe 11-the 3rd water pipe 13 are provided with the valve | bulb suitably, and the flow of water is interrupted | blocked or distribute | circulated by this valve.

  FIG. 5 is a diagram illustrating a configuration example of the water quality measuring device 1.

  The water quality measuring device 1 includes an air amount adjusting unit 6, a first submersible pump 14, a second submersible pump 15, a third submersible pump 16, a water quality measuring sensor 75, and a control unit 17.

  The air amount adjusting unit 6, the first submersible pump 14, the second submersible pump 15, the third submersible pump 16, and the water quality measurement sensor 75 are each connected to the control unit 17.

  The control unit 17 includes, for example, a computer or the like, and controls the operation of each unit, accumulates measurement results, or transmits the result by a mobile phone line or other wireless / wired means.

  Hereinafter, the flow of control by the control unit 17 will be described.

  First, the water quality measuring device 1 is normally maintained in a state where the first air chamber 3 to the third air chamber 5 are filled with air (see FIG. 2).

  At the time of measuring the water quality, first, the air adjusting unit 6 is operated, and the air in the first air chamber 3 is exhausted. When air is exhausted, water enters the first air chamber 3 and the intake port 11a is immersed in water. Then, the first submersible pump 14 is driven in a state where the intake port 11a is immersed in water, and water is stored in the water storage tank 71 via the first water supply pipe 11 and the first water intake port 17a. At this time, water continues to flow into the water storage tank 71, and a certain amount or more of water is discharged from the overflow pipe 72.

  Then, after the water quality is measured by the water quality measurement sensor 75, the driving of the first submersible pump 14 is stopped, the water supply from the first air chamber 3 is stopped, and all the water in the water storage tank 71 is discharged.

  Next, the air amount adjusting unit 6 is operated, compressed air is supplied into the first air chamber 3 and water is discharged from the first air chamber 3, and the inside of the first air chamber 3 includes the intake port 11a and the first air chamber. It becomes the normal state where the inside of the single water supply pipe 11 is held in the air. In this way, the operation of taking water from the first air chamber 3 is completed.

  Thereafter, in the same manner as described above, the second submersible pump 15 is operated to take in water from the second air chamber 4 to measure the water quality, and then the third submersible pump 16 is operated to operate the third air. Water is taken in from the chamber 5 and its water quality is measured. Note that the order of the air chambers for measuring the water quality may not be as described above.

  The water quality data measured by the water quality measurement sensor 75 in this way is transmitted from the control unit 17 to an external device by communication means (not shown) and managed in the device.

  As described above, in the present embodiment, the intakes are immersed in water only at the time of water quality measurement, and the intakes are normally held in the air. The number of times can be reduced.

  In addition, since algae and the like hardly adhere to each intake port and the like, impurities can hardly be mixed into the sucked water, and an accurate water quality can be measured, and highly reliable data can be obtained.

  Further, since each intake is fixed at the measurement position, the water quality at the same position can always be measured, and a more accurate water quality can be measured.

  Moreover, since the number of the water quality measuring devices 7 is one, the device is simple and inexpensive.

  Moreover, since water can be taken into or exhausted from each air chamber only by adjusting the air amount in each air chamber by the air amount adjusting unit 6, a simple configuration can be realized.

  Moreover, since each submerged pump is immersed in water for a short time, algae and the like are hardly attached to each submerged pump, and the number of maintenance can be reduced.

  In addition, since each intake etc. is open downward, after sucking water from each intake, water and algae etc. remaining in each intake etc. naturally fall and they do not remain, The number of maintenance can be reduced, and accurate measurement can be performed for a long time.

  In addition, water can be measured by flowing water into the water storage tank 71 so that water and air are not mixed only by driving each submersible pump, and water can be naturally removed from the water storage tank 71 simply by stopping the driving of each submersible pump. As a result, the configuration of the water quality measuring instrument 7 becomes simple and more accurate measurement is possible. In particular, accurate data can be obtained when measuring the dissolved oxygen concentration.

  Moreover, since the bottom surface of the water storage tank 71 is the inclined surface 71e, it is possible to discharge the water in the water storage tank 71 without leaving it with a simple configuration. Furthermore, since water does not remain in the water storage tank 71, accurate water quality can be measured.

  The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

  For example, in the above embodiment, a submersible pump is provided in each air chamber. However, a suction pump is provided above each of the water supply pipes 11 to 13, and water is sucked up by this suction pump to the water quality measuring device 7. You may send water.

  In addition, the structure of the 1st air chamber 3 of this state-the 3rd air chamber 5 was shown in FIG.

  In this case, the intake port 11a to the intake port 13a are not immersed in water, but are immersed in water only when water is supplied to the water quality measuring device 7. And water is sent to the water quality measuring device 7 by driving the suction pump in a state where the intake port 11a to the intake port 13a are immersed in water.

  In this way, since the suction pump can be provided on the water surface or on the water surface float, algae and the like do not adhere to the suction pump, and the number of maintenance can be reduced.

  In addition, each water pipe is connected at the top, a switching valve and a suction pump are provided at the connection part, and the switching valve is switched to connect the intake port 11a to the intake port 13a to the water quality measuring device 7 and suck water. There may be. In this way, the number of suction pumps may be one, so that the configuration is simpler and the configuration is inexpensive.

  The present invention can be used not only in seas and lakes but also in reservoirs such as dams and wastewater treatment facilities, and can be widely used in the measurement of liquids in general.

It is the figure which showed typically the structure of the water quality measuring apparatus of this invention. It is the figure which showed typically the structure of the air chamber of a normal state. It is the figure which showed typically the structure of the air chamber of the state which took in water. It is the figure which showed the structure of the water quality measuring device typically. It is the figure which showed the structural example of the water quality measuring apparatus. It is the figure which showed typically the structure of the air chamber concerning other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water quality measuring device 3 1st air chamber 4 2nd air chamber 5 3rd air chamber 6 Air quantity adjustment part 7 Water quality measuring device 11 1st water supply pipe 12 2nd water supply pipe 13 3rd water supply pipe 14 1st submersible pump 15 1st Two submersible pump 16 Third submersible pump 71 Reservoir 71a-71c Water intake 71d Drain outlet 71e Inclined surface 72 Overflow pipe 75 Water quality measuring sensor

Claims (7)

A water quality measuring instrument for measuring water quality;
At least one air chamber provided at a predetermined position in the water;
An intake provided in each air chamber;
A water pipe connecting the intake and the water quality measuring device;
By adjusting the amount of air in the air chamber, the inlet is introduced water into said air chamber to soak in water and, after the water has been measured by the water quality measuring instrument, and discharging the water in the air chamber An air amount adjusting unit filled with air ,
A water supply means for sending water taken into the air chamber by the air amount adjusting unit from the intake port to the water quality measuring device via the water supply pipe;
A water quality measuring device comprising:
The air chamber has a hollow shape with an open bottom, and water can flow in and out from the opening.
The air amount adjusting unit, said to reduce the amount of air in the air chamber is Torii water inside the opening portion, and also, to discharge water to the outside from the opening portion by increasing the air volume of the air chamber The water quality measuring device according to claim 1, wherein:
  The water supply means includes a submersible pump in each air chamber, sucks water from the intake port by the submersible pump, and supplies the sucked water to the water quality measuring device. The water quality measuring device according to claim 1 or 2.   The water supply means includes a suction pump in the middle of the water supply pipe, sucks water from the intake port by the suction pump, and feeds the sucked water to the water quality measuring device. The water quality measuring device according to claim 1 or 2.   The water quality measuring device according to any one of claims 1 to 4, wherein the intake port is open downward. The water quality measuring instrument is
A water tank for storing the water to be measured;
A water quality measurement sensor provided in the water tank for measuring the quality of the stored water, and
The water tank is
It has a water intake port for taking in water sent from the water supply means, and a water discharge port for discharging stored water to the outside, and the water intake port is provided above the water discharge port,
Water is stored in such a way that the amount of water taken from the intake port exceeds the amount of water discharged from the drain port, and when it exceeds a certain amount, the water overflows from the top of the opening The water quality measurement device according to claim 1, wherein the water quality measurement device is a water quality measurement device. The water quality measuring device according to claim 6, wherein the reservoir layer is formed so that a bottom surface is inclined from a water intake to a drain.

Images