JP2007108033A - Property measurement device for seawater or water of water area - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easy-configuration property measurement device restricted with horizontal movement, coping with even a change of a tide level or a water level, and capable of measuring a property of seawater or water of a water area. <P>SOLUTION: This property measurement device includes: a sensor 30 measuring the property of the seawater or the water of a water area; a float 41 supporting the sensor 30, making a detection part of the sensor 30 be positioned in a prescribed depth from the water surface, and fixed to the sensor 30; and at least two ropes each having one end fixed to the sensor 30 or the float 41, and the other end fixed to a quay 70 or an on-sea fixing object. The sensor 30 is positioned between the ropes 60, and the ropes 60 are installed such that the two ropes form a nearly straight line in a plan view. The rope 60 has a length wherein the sensor 30 is positioned in a prescribed position to the water surface even if the tide level or the water level changes and wherein the horizontal movement of the sensor 30 is restricted in a prescribed range. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a measuring device that measures the properties of seawater or water in a water area such as seawater temperature or water temperature, and more particularly to a measuring device that measures the properties of seawater or water that can cope with changes in tide level or water level.

  In a thermal power plant, steam generated by a boiler is used to drive a steam turbine, and power is generated by a generator connected to the steam turbine. The steam exhausted from the steam turbine is cooled and condensed by a condenser, and condensed water is recovered. I have to. Since boilers and steam turbines used in thermal power plants are large and the amount of steam exhausted from the steam turbine is large, seawater is used to cool the exhaust steam. This seawater is taken from the sea near the power plant by a seawater pump through a water intake. Since this seawater is used as cooling water, it is desirable that the temperature is low, and a curtain wall is installed at the intake inlet to take water from a deep layer.

  Since the temperature of the intake seawater affects the cooling capacity of the condenser, the intake port is provided with a temperature measuring device for measuring the seawater temperature. FIG. 4 is a diagram showing a schematic configuration of a seawater temperature measuring apparatus 1 that measures the temperature of seawater at a conventional power plant intake. The temperature sensor 3 to which the float 2 is fixed is placed in a guide pipe 5 fixed to the curtain wall 4 and measures the seawater temperature at the intake port. There is a gap between the guide pipe 5 and the float 2, and even if the tide level changes, the temperature sensor 3 can move up and down corresponding to the tide level. Further, a weight 7 is connected to the temperature sensor 3 via a wire 6, and the temperature sensor 3 is adjusted to a certain depth with respect to the sea surface 8 even if the tide level changes between the float 2 and the weight 7. The The output signal of the temperature sensor 3 is sent to a seawater temperature recorder (not shown) via the output signal line 9 and the cable relay box 10 and recorded.

In addition, as a device for measuring the temperature of a fixed point in the water area, a float is attached to the upper part of the tubular member, a temperature sensor is attached to the lower part of the tubular member, and this tubular member is erected on the bottom of the water so that the tip is on the water surface. An apparatus for measuring temperature through a rod has been proposed (see, for example, Patent Document 1).
JP 2001-201345 A

  When measuring seawater temperature and water temperature using a temperature sensor, the temperature sensor should move up and down in response to changes in the tide level, and the temperature sensor should not be swept away by the flow of seawater, wind, etc. . For this reason, in the seawater temperature measuring apparatus 1 shown in FIG. 4, the horizontal movement of the temperature sensor 3 is restricted by placing the temperature sensor 3 in the guide pipe 5. Similarly, in the technique described in Patent Document 1, the temperature sensor is moved up and down in accordance with the tide level along a rod standing on the bottom of the water.

  The conventional seawater temperature measuring device 1 and the temperature measuring device described in Patent Literature 1 can cope with changes in tide level and prevent horizontal movement due to seawater flow, wind, and the like. However, both employ a mechanism for moving the temperature sensor vertically along the guide pipe or rod, so that the distance between the guide pipe or rod and the temperature sensor, or between the guide pipe or rod and the support member that supports the temperature sensor. Is relatively short. For this reason, when a barnacle, shellfish, algae, etc. adhere to a guide pipe or a rod, or a temperature sensor or a support member that supports the temperature sensor, the shellfish or the like becomes a hindrance and the temperature sensor cannot move up and down. The same applies when a foreign object enters between the guide pipe or bar and the temperature sensor and the support member that supports the temperature sensor.

  If it becomes such a state, the case where the temperature detection part of a temperature sensor is not immersed in seawater or water also arises, and the temperature of seawater and a water area cannot be measured correctly. It is conceivable to regularly clean the temperature sensor or the guide pipe to cope with this problem, but since the distance between the guide pipe or the bar and the temperature sensor is short, it is necessary to frequently clean and troublesome. Further, in the conventional seawater temperature measuring apparatus 1 shown in FIG. 4, the output signal line 9 may be sandwiched between the float 2 and the guide pipe 5 and disconnected. As described above, the temperature measuring device for measuring the temperature of the seawater has been described as an example, but there is a similar problem when the pH of water whose water level changes is detected by a pH sensor.

  An object of the present invention is to provide a property measuring device that has a simple configuration, can limit the movement in the horizontal direction, and can measure the properties of seawater or water in a water area corresponding to changes in tide level or water level.

The present invention provides a sensor for measuring the properties of seawater or water in a water area;
A float fixed to the sensor that supports the sensor and positions the detection portion of the sensor at a predetermined depth from the water surface;
And at least two ropes, one end of which is fixed to the sensor or the float and the other end is fixed to a quay or a fixed object at sea, the sensor is located between the ropes, and the two ropes are viewed in plan view. The rope has a length that limits the horizontal movement of the sensor to a certain range even if the tide level or water level changes. It is the property measurement apparatus of the seawater or water of the water area characterized by having.

  In the present invention, the sensor is a seawater or water property measuring device according to claim 1, wherein a weight is fixed to the sensor.

  Further, in the present invention, the rope has elasticity, the seawater in the water area or the water property measuring device according to claim 1, wherein the rope has elasticity.

  Moreover, in this invention, the said rope is fixed to the said quay or the said marine fixed thing so that attachment or detachment is possible, The seawater or water property measuring apparatus of the water area of any one of Claim 1 to 3 characterized by the above-mentioned. It is.

  Further, in the present invention, floating is fixed to the rope, and the signal line of the sensor is fixed to the rope. Seawater or water in a water area according to any one of claims 1 to 4 This is a property measuring apparatus.

  Further, in the present invention, the sensor is a temperature sensor for measuring temperature or a pH sensor for measuring pH, and the property measurement of seawater or water in the water area according to any one of claims 1 to 5 Device.

  In the apparatus for measuring seawater or water properties in the water area of the present invention, the float is fixed to a sensor for measuring the seawater or water property in the water area, and at least two ropes are attached to the sensor or the float. Or, it is fixed to a fixed object at sea, and the rope is attached so that the two ropes are substantially straight in a plan view. Even if the tide level or the water level changes, the rope is in a predetermined position with respect to the water surface. Since the sensor has a length that restricts horizontal movement to a certain range, the sensor can move in the vertical direction corresponding to the tide level or water level at substantially the same position in the horizontal direction. Unlike a conventional apparatus, since a guide pipe, a guide bar, or the like is not used to limit the movement of the sensor in the horizontal direction, the sensor can move smoothly in the vertical direction corresponding to the tide level or water level.

  Further, according to the present invention, since the weight is fixed to the sensor, the sensor is not affected by the flow of seawater and the wind, and the position or the inclination is not greatly changed.

  Further, according to the present invention, since the rope has elasticity, the sensor is pulled with a constant tension, and the sensor can be moved in accordance with the tide level or the water level at substantially the same position in the horizontal direction. .

  Further, in the present invention, the rope is detachably fixed to the quay or a fixed object on the sea. Therefore, when performing maintenance and inspection of the sensor, the rope can be easily removed by removing the rope fixed to the quay or the fixed object on the sea. The sensor can be moved to the quay, and the sensor can be easily maintained and inspected.

  Further, according to the present invention, since the float is fixed to the rope and the signal line of the sensor is fixed to the rope, the rope works as a reinforcing material for the signal line of the sensor and prevents the signal line from being disconnected. Can do.

  Further, according to the present invention, the sensor is a temperature sensor for measuring temperature, or a pH sensor for measuring pH. Therefore, using the seawater or water property measuring device of the water area of the present invention, seawater temperature, pH in drainage Etc. can be measured.

  FIG. 1 is a side view showing a schematic configuration of a seawater temperature measuring device 20 for measuring the seawater temperature of a power plant intake as one embodiment of the present invention. The seawater temperature measuring device 20 is a device that measures the seawater temperature of the intake port, a temperature sensor 30 for measuring the temperature of seawater, a temperature sensor support 40 that supports the temperature sensor 30 by floating on the sea surface, and a temperature sensor 30. The rope 60 is mainly configured to prevent the water from being moved due to a tide or wind.

  The temperature sensor 30 is a sensor that measures the seawater temperature, and the measured seawater temperature data is output to a recorder or the like (not shown) through the output signal line 31. The temperature sensor 30 is attached to the temperature sensor support 40 in order to measure the seawater temperature at a predetermined depth from the sea surface 21. The temperature sensor 30 is exemplified by a resistance temperature detector and a thermocouple, and the length of the temperature sensor 30 may be determined so that the temperature measuring unit is at a predetermined position. The temperature sensor 30 may be inserted into a protective tube having seawater resistance as necessary.

  FIG. 2 is a side view of the temperature sensor support 40. The temperature sensor support 40 has a float 41 at the top and a balance weight 42 at the bottom. Thereby, the temperature sensor 30 can be stably supported at a fixed position. The float 41 is obtained by injecting urethane foam into a stainless steel cylindrical container 43. The cylindrical container 43 has a sealed structure so that seawater does not enter, and a balance weight mounting pipe 44 is fixed to the central part of the cylindrical container 43 so as to penetrate the cylindrical container 43. A protective tube mounting boss 46 is fixed to the wall 45 so that the center axis of the balance weight mounting pipe 44 coincides with the center axis. Further, rope fixing tools 48 a and 48 b for fixing the rope 60 are fixed to the side wall 47 of the cylindrical container 43 at two opposing positions.

  The balance weight 42 stabilizes the temperature sensor 30 in seawater, and is fixed to the balance weight attachment pipe 44. Since a screw portion (not shown) is provided at the lower portion of the balance weight mounting pipe 44, the nut 49 is attached to the screw portion after the balance weight 42 is inserted into the balance weight mounting pipe 44. The balance weight 42 can be fixed to the lower portion of the balance weight attachment pipe 44. A temperature sensor protective tube 50 for inserting the temperature sensor 30 is inserted into the balance weight mounting pipe 44, and the temperature sensor protective tube 50 is detachably fixed to the protective tube mounting boss 46. . The temperature sensor 30 is inserted into and fixed to the temperature sensor protective tube 50 for use.

  If the temperature sensor support 40 can position the temperature measurement part of the temperature sensor 30 stably, for example, even if a wave is applied or a wind is blown, the above-described shape, The structure is not limited. Therefore, even if the balance weight 42 is not attached, the balance weight 42 is not necessarily required if the temperature sensor 30 is stable in seawater. The method of attaching the balance weight 42 is not limited to the above embodiment, and a method of fixing the rope and string to the floating 41 and suspending the balance weight 42 on the rope and string may be used. Further, the shape of the balance weight 42 is not limited to the shape of the present embodiment. The float 41 can also be made of a synthetic resin foam or buoy in addition to this embodiment. Further, the temperature sensor 30 does not need to be inserted into the temperature sensor protective tube 50 and used, and the temperature sensor 30 may be directly attached to the float 41.

  FIG. 3 is a plan view showing a state in which the seawater temperature measuring device 20 of the present invention is attached to the water inlet. The rope 60 prevents the temperature sensor 30 from being swept by tidal currents, winds, etc., and restricts the horizontal movement of the temperature sensor 30 to a certain range. One end of each of the two ropes 60a and 60b is It is fixed to rope fixing tools 48 a and 48 b provided on the side wall 47 of the float 41. The other ends of the ropes 60a and 60b are detachably fixed to curtain walls 70a and 70b provided around the water intake, and the two ropes are attached in a substantially straight line in plan view. The ropes 60a and 60b do not necessarily need to be fixed to the float 41, and may be fixed to the temperature sensor 30 main body if the temperature sensor 30 has no problem in strength.

  The lengths of the ropes 60a and 60b have such a length that the temperature sensor 30 is surely immersed in seawater even when the tide level changes, and the length that the temperature sensor 30 is not flown far away by wind or the like. . It is desirable to measure the temperature of the intake at a fixed position. On the other hand, the temperature measurement must respond to changes in the tide level. If the lengths of the ropes 60a and 60b are extremely shortened, the temperature sensor 30 will rise from the sea surface when the tide level drops. On the other hand, if the lengths of the ropes 60a and 60b are made too long, the temperature sensor 30 can be swept away by the tidal current and wind, although the tide level can be changed, and the seawater temperature at a location far away from the predetermined position is measured. Become. For this reason, it is preferable that the lengths of the ropes 60a and 60b can cope with the tide level and limit the movement in the horizontal direction as much as possible.

  From the viewpoint of restricting the movement of the temperature sensor 30 in the horizontal direction, a minimum of two ropes are necessary. When restricting the movement of the temperature sensor 30 in the horizontal direction using two ropes, two ropes are required. It is desirable to stretch the rope in a substantially straight line. With a single rope, the horizontal movement of the temperature sensor 30 cannot be restricted. If two ropes are attached in a substantially straight line, the movement of the temperature sensor 30 in the horizontal direction can be limited efficiently with a small number of ropes. If the number of ropes is two, the temperature sensor 30 can be easily installed, maintained, and removed. Of course, since the number of ropes is not limited to two, four ropes may be arranged in the east, west, south, and north.

  If an elastic body such as rubber or a spring is attached to the rope 60, a certain tension is applied to the rope 60, and the horizontal movement of the temperature sensor 30 can be restricted. Moreover, you may form the rope itself with the member which has elasticity. As long as the rope 60 can support the temperature sensor 30 in a certain place on the sea surface, the type and the name are not particularly limited. A string, rope, wire, rope or the like having a certain strength and seawater resistance can be used.

  Further, the output signal line 31 of the temperature sensor 30 is fixed to one rope 60a. The output signal line 31 of the temperature sensor 30 has a relatively thin wire diameter and may not have sufficient strength. However, the rope 60a is fixed to the rope 60a by fixing the output signal line 31 of the temperature sensor 30 to the rope 60a. It functions as a reinforcing material for the output signal line 31, and disconnection of the output signal line 31 can be prevented. In addition, the ropes 61 have floats 61a and 61b fixed to the intermediate portions. Thereby, it is possible to prevent a large downward load from being applied to the temperature sensor 30.

  When the seawater temperature measuring device 20 configured as described above is used, the temperature sensor support 40 that supports the temperature sensor 30 is installed at a predetermined location of the water outlet, and the two ropes 60a and 60b are substantially in a straight line. Then, the two ropes 60a and 60b are detachably attached to the curtain walls 70a and 70b. As a result, the seawater temperature at the intake port can be measured, and this temperature data can be output to a recorder not shown through the output signal line 31. Since the seawater temperature measuring device 20 of the present invention does not use a guide pipe or a guide bar unlike the conventional device in order to keep the temperature sensor 30 at a fixed position, barnacles and shellfish are not attached to the temperature sensor support 40. Even if it adheres, the movement of the temperature sensor 30 in the vertical direction is not hindered.

  When barnacles and shellfish are attached to the temperature sensor support 40, the rope 60b on which the output signal line 31 of the temperature sensor 30 is not fixed is removed from the curtain wall 70b, and the output signal line 31 of the temperature sensor 30 is fixed. Maintenance can be easily performed by pulling the rope 60a to the curtain wall 70a side. At this time, since the ropes 61a and 61b are fixed to the ropes 60a and 60b in the middle, the ropes 60a and 60b are not caught by projections on the seabed and the temperature sensor support 40 is smoothly attached to the curtain wall 70a side. Can be drawn to. In the present embodiment, the rope 60 is fixed to the curtain walls 70a and 70b. However, the rope 60 is not limited to this, and may be a quay, a marine fixed object, or a land fixed object. Of course it is good.

  As mentioned above, although the example of the seawater temperature measuring apparatus which measures the seawater temperature of a power station intake was shown, this invention is not limited to a seawater temperature measuring apparatus. When measuring the property value of seawater or water in a place where the water level changes, such as the sea or river, using the sensor, the property measuring device of the present invention can change the sensor to the tide level or water level without using a guide pipe or the like. The characteristic value can be measured in a state where the movement in the horizontal direction is limited within a certain range. Therefore, the present invention can also be applied to a water outlet of a power plant, a pH measuring device that measures pH of a river, a dissolved oxygen measuring device, a conductivity measuring device, a turbidity measuring device, and the like.

It is a side view which shows schematic structure of the seawater temperature measuring apparatus 20 which measures the seawater temperature of the power station intake channel as one Embodiment of this invention. It is a side view of the temperature sensor support tool 40 of the seawater temperature measuring apparatus 20 shown in FIG. It is a top view which shows the state which installed the seawater temperature measuring apparatus 20 as one Embodiment of this invention in the power station intake channel. It is a figure which shows schematic structure of the conventional temperature measuring apparatus 1. FIG.

Explanation of symbols

20 Seawater temperature measuring device 30 Temperature sensor 31 Output signal line 40 Temperature sensor support 41 Floating 42 Balance weight 60 Rope 70 Curtain wall

Claims (6)

A sensor that measures the properties of seawater or water in the water area;
A float fixed to the sensor that supports the sensor and positions the detection portion of the sensor at a predetermined depth from the water surface;
At least two ropes, one end of which is fixed to the sensor or the float and the other end is fixed to a quay or a fixed object at sea, the sensor being located between the ropes, and the two ropes in plan view. The rope has a length that limits the horizontal movement of the sensor to a certain range even if the tide level or water level changes. An apparatus for measuring the properties of seawater or water in a water area, characterized by comprising:   2. The seawater or water property measuring device according to claim 1, wherein a weight is fixed to the sensor.   The said rope has elasticity, The seawater of the water area or the property measurement apparatus of water of Claim 1 or 2 characterized by the above-mentioned.   The seawater or water property measuring apparatus according to any one of claims 1 to 3, wherein the rope is detachably fixed to the quay or the fixed sea.   5. The seawater or water property measuring apparatus according to claim 1, wherein a float is fixed to the rope, and a signal line of the sensor is fixed to the rope.   The said sensor is a temperature sensor which measures temperature, or a pH sensor which measures pH, The seawater or water property measuring apparatus of the water area of any one of Claim 1 to 5 characterized by the above-mentioned.

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