JP7452294B2 - Salt adhesion meter - Google Patents

Description

The present invention relates to a salinity meter that measures the amount of salt deposited at an installation location.

Various types of equipment such as factory air conditioning equipment and power transmission and distribution equipment may be installed in coastal areas, for example. In coastal areas, the concentration of salt that is dispersed into the atmosphere increases when a typhoon hits. Therefore, in various types of equipment in coastal areas, salt damage such as rust due to atmospheric salt adhering to electrical equipment such as transformers and switches is likely to occur.

As a result, various types of equipment in coastal areas are required to be designed to protect against salt damage and to undergo frequent maintenance, leading to increased costs. Therefore, it is necessary to predict salt damage to equipment, but it is difficult to predict salt damage because the actual degree of salt damage greatly depends on the topography (presence of buildings and forests, etc.).

Patent Document 1 states that in order to predict salt damage, it is necessary to measure the amount of salt scattered in the atmosphere, and to do so, it is necessary to capture the salt scattered in the atmosphere. , discloses a scattered salt capture device.

This scattered salt capture device includes a cylindrical salt capture body, a box, a rotation support part, and a tail. The salt capture body holds gauze in a cylindrical shape that can capture salt scattered in the atmosphere. The Momohabako is a box that houses a salt trapping body, and is provided with a louver that guides air to the salt trapping body. The rotation support section rotatably supports the 100-page box around a vertical axis. The tail fin is installed on the opposite side of the louver of the Hyakubako, with the louver facing upwind. Furthermore, in the scattered salt capture device, the salt capture body is configured so as not to rotate around the vertical axis.

In Patent Document 1, the louver always faces upwind due to the movement of the tail fin that receives the wind, whereas the salt trapping body inside the Momoha box remains stationary at the center of rotation of the Momoha box, so that the salt does not move in the flying direction. It adheres to different parts of the gauze depending on the situation. For this reason, Patent Document 1 states that by dividing the range for measuring the amount of salt adhering to gauze in the circumferential direction, it is possible to measure the amount of adhering salt for each flying direction.

Furthermore, in Patent Document 1, by installing the salt trapping body inside a box, the salt trapping body receives an amount of salt according to the wind speed so that it will not be affected by rain regardless of the presence or absence of a roof at the installation location. It is said that it can be attached.

International Publication No. 2015/011780

However, to predict salt damage such as rust on equipment, it is necessary to measure not only the amount of scattered salt but also the amount of adhering salt that takes into account the rain washing effect in which deposits (salt) are washed away by rain. The amount of scattered salt is the amount of salt contained per unit volume in the atmosphere (airborne salt density) multiplied by the wind speed.

The scattered salt capture device of Patent Document 1 simply measures the amount of scattered salt by attaching the salt scattered in the atmosphere to gauze, and moreover, the salt capture device including the gauze is installed inside the box. Therefore, the salt adhering to the gauze will not be washed away. Therefore, with the scattered salt capture device of Patent Document 1, it is not possible to measure the amount of adhering salt at the installation location (outdoors exposed to the rain), and the degree of salt damage such as rust cannot be ascertained.

SUMMARY OF THE INVENTION In view of these problems, an object of the present invention is to provide a salt deposit meter that can measure the amount of deposited salt at an installation position.

In order to solve the above problems, a typical configuration of the salt deposit meter according to the present invention includes a leakage detection band whose resistance value changes depending on the concentration of electrolyte in water when wet, and a voltage applied to the leakage detection band. The device is characterized by being equipped with a power supply that applies voltage to the liquid leakage detection band, a logger that records changes in voltage applied to the leakage detection band in time series, and a communication unit that transmits the voltage recorded in the logger.

In the leakage detection zone with the above configuration, the resistance value decreases when salt scattered in the atmosphere or salt contained in rainwater adheres to it, but if it gets wet with rainwater with low salt content, the attached salt is washed away by the rain washing effect. resistance value returns (increases). Furthermore, when the leakage detection band gets wet with rainwater, its resistance value changes depending on the concentration of electrolyte (salt) in the water. Therefore, the resistance value of the leakage detection band changes depending on the amount of adhering salt, taking into account the amount of scattered salt and the rain washing effect, at the installation position of the salt adhesion meter. The amount of scattered salt is the amount of salt contained per unit volume in the atmosphere (airborne salt density) multiplied by the wind speed.

In the above configuration, a voltage is applied to the leakage detection band, the change in voltage applied to the leakage detection band is recorded in time series by a logger, and the change in voltage in time series recorded in the logger is further recorded by the communication section. Sending. For this reason, if you record the correlation between the change in voltage applied to the leakage detection band and the amount of salt deposited in advance, you can install a salt deposit meter near equipment (for example, electrical equipment such as transformers and switches). By doing so, the amount of salt adhering at the installation location can be determined by the time-series changes in the voltage applied to the leakage detection zone recorded by the logger.

Therefore, with a salt deposit meter, it is possible to compare the result of equipment rusting with the cause of the amount of deposited salt. By accumulating data on these comparisons, in the future it will be possible to determine the degree of rust just by knowing the amount of salt attached, which will help optimize the timing of equipment replacement and maintenance. can.

The above-mentioned salt deposition meter may further include a wind vane, and the logger may record the wind direction obtained from the wind vane as well as changes in voltage.

This makes it possible to know the wind direction at the installation location of the salt deposit meter, which provides evidence for understanding changes in the voltage applied to the leakage detection band. As an example, if the salt deposit meter is installed in a coastal area, when it is exposed to wind and rain from the sea side, the resistance value of the leakage detection band decreases due to the high salt concentration in the water, and the voltage recorded by the logger decreases. will also become smaller. On the other hand, when it is exposed to wind and rain from the mountain side, the attached salt is washed away, and since the salt concentration in the water is low, the resistance value recovers and increases, and the voltage recorded by the logger also increases. In this way, the natural environment at the installation location can be understood by correlating changes in voltage with wind direction.

The above power source is preferably a solar cell. This allows the salinity meter to be installed without being connected to an external power source and to function independently.

The communication unit described above preferably performs wireless communication. This makes it possible to easily collect data recorded in the logger even if the salinity meter is installed at a high location.

According to the present invention, it is possible to provide a salt adhesion meter that can measure the amount of adhering salt at an installation position.

FIG. 2 is a diagram illustrating a salt adhesion meter in an embodiment of the present invention. FIG. 2 is a block diagram showing the functions of the salt adhesion meter of FIG. 1. FIG. 2 is a graph showing the results of each test using the salt adhesion meter of FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in these embodiments are merely illustrative to facilitate understanding of the invention, and do not limit the invention unless otherwise specified. In this specification and the drawings, elements with substantially the same functions and configurations are given the same reference numerals to omit redundant explanation, and elements not directly related to the present invention are omitted from illustration. do.

FIG. 1 is a diagram illustrating a salt adhesion meter 100 in an embodiment of the present invention. FIG. 1(a) is a diagram showing the appearance of the salt adhesion meter 100. FIG. 1(b) is a diagram of the salt adhesion meter 100 of FIG. 1(a) viewed from a different direction. FIG. 2 is a block diagram showing the functions of the salt adhesion meter 100 of FIG. 1.

The salt adhesion meter 100 is installed near various devices (not shown) and measures the amount of adhering salt at the installation position. Examples of the equipment include electrical equipment such as transformers and switches installed in various types of equipment (factory air conditioning equipment, power transmission and distribution equipment, etc.) installed in coastal areas. In coastal areas, when a typhoon hits, the concentration of salt scattered in the air increases, making equipment susceptible to salt damage such as airborne salt adhering to equipment and causing rust.

The amount of salt attached is the amount of salt that adheres to the equipment, and the amount of salt that is scattered by multiplying the salt contained per unit volume in the atmosphere (airborne salt density) by the wind speed, and the amount of salt that adheres to the equipment (salt) due to rain. This takes into consideration the effect of rain washing away. Therefore, installing the salt adhesion meter 100 near the equipment and knowing the amount of adhering salt at the installation location is useful in predicting salt damage such as rust on the equipment.

The salt adhesion meter 100 includes a long belt-shaped liquid leakage detection band 102, as shown in FIG. 1(a). The leakage detection band 102 has a property that when it gets wet with rainwater, its resistance value changes depending on the concentration of electrolyte (salt) in the water. Further, the liquid leakage detection band 102 is pulled out from inside the weather louver 104 as shown in FIG. 1(b). Note that a plurality of louvers 106 are provided inside the weather louver 104.

When the leakage detection band 102 is exposed to salt scattered in the atmosphere or salt contained in rainwater, its resistance value decreases, but when it gets wet with rainwater with a lower salt content, the attached salt is washed away by the rain washing effect. The resistance value returns (increases). That is, the resistance value of the leakage detection band 102 changes depending on the amount of adhering salt at the installation position of the salt adhesion meter 100, taking into account the amount of scattered salt and the rain washing effect.

The salt deposition meter 100 also includes a solar cell 108 and wind vanes 110 and 112. The solar cell 108 is installed on the inclined surface 114 of the weather louver 104 and functions as a power source that applies voltage to the leak detection band 102. Furthermore, a sealed casing 118 is installed on the side surface 116 of the weather louver 104 to prevent rainwater from entering. The wind vane 110 is installed on the top surface 120 of the housing 118, as shown in FIG. 1(a), and measures the wind direction in the horizontal direction. The wind vane 112 is installed on the side surface 122 of the housing 118 and measures the vertical wind direction.

The salt adhesion meter 100 further includes a voltmeter 124 shown in FIG. 2 arranged inside the housing 118, a logger 126 as a storage section, a communication section 128, and a control section 130. Voltmeter 124 measures the voltage applied to leakage detection band 102 .

The control unit 130 acquires the voltage value measured by the voltmeter 124 and the wind direction measured by the wind vanes 110 and 112, and outputs them to the logger 126. The logger 126 is controlled by the control unit 130 and records changes in the voltage applied to the leakage detection band 102 in time series, and also records the wind direction along with the changes in voltage.

The communication unit 128 is controlled by the control unit 130 to perform wireless communication, and transmits the voltage and wind direction recorded in the logger 126. Therefore, even if the salinity adhesion meter 100 is installed at a high place, the communication unit 128 performs wireless communication, so data recorded in the logger 126 can be easily collected.

Furthermore, the solar cell 108 not only functions as a power source for applying voltage to the leak detection band 102 but also functions as a power source for the logger 126, the communication section 128, and the control section 130. Therefore, by using the solar cell 108, the salt deposition meter 100 can be installed without being connected to an external power source, and can function independently.

FIG. 3 is a graph showing the results of each test using the salt adhesion meter 100 of FIG. 1. FIG. 3A is a graph showing the results of the saline test, with the horizontal axis representing the saline concentration (wt%) and the vertical axis representing the output voltage value (mV).

In this salt water test, the leakage detection band 102 is soaked and wetted in a container containing salt water, and the voltage (output voltage value) applied to the leakage detection band 102 is recorded by the logger 126 for each salt concentration of the saline solution. did.

However, "dry" on the horizontal axis indicates a case where the leak detection band 102 is not wet. In addition, the salt concentration of "0 wt%" indicates the case where the liquid leakage detection band 102 is soaked in a container containing water that does not contain salt. In this case, the output of the liquid leakage detection band 102 is The voltage value is 2450 (mv).

According to the graph in FIG. 3A, as the salt concentration of the saline solution increases, the resistance value of the leak detection band 102 decreases, and therefore the voltage recorded by the logger 126 also decreases. Here, the salt concentration in the salt water test is correlated with the amount of salt adhering to the leakage detection zone 102. Therefore, the graph in FIG. 3(a) shows the correlation between the change in voltage applied to the leakage detection band 102 and the amount of deposited salt.

Therefore, if the correlation shown in the graph of FIG. The amount of salt deposited at the installation location can be determined by the time-series change in voltage (see FIG. 3(b)).

FIG. 3(b) is a graph showing the results of the verification test, with the horizontal axis representing the time at the installation position and the vertical axis representing the output voltage value (mV). In this demonstration test, the salt adhesion meter 100 was installed near the equipment, and the logger 126 recorded time-series changes in the voltage (output voltage value) applied to the leakage detection zone 102. Note that the graph in FIG. 3(b) is based on the output voltage value of 2450 (mv) when the salt concentration is "0 wt%" in the graph in FIG. 3(a), that is, when the leakage detection band 102 is wetted with water. It is a voltage value.

According to the graph of FIG. 3(b), the output voltage value becomes smaller than the reference voltage value at time Ta, and then the output voltage value recovers again. In other words, the leakage detection band 102 is coated with salt scattered in the atmosphere and salt contained in rainwater at time Ta, and its resistance value decreases, and after that, when it gets wet with rainwater with low salt content, it is affected by the rain washing effect. It is thought that the attached salt was washed away and the resistance returned.

In this way, the salt adhesion meter 100 records in advance the correlation between the change in the voltage applied to the leakage detection band 102 and the amount of adhering salt, and then applies a voltage to the leakage detection band 102. By recording changes in the voltage applied to the sensor in time series using the logger 126, it is possible to know the amount of salt deposited at the installation location.

Therefore, with the salt adhesion meter 100, it is possible to compare the result of the equipment rusting with the cause of the amount of adhering salt. Furthermore, by accumulating data on these comparisons, in the future it will be possible to know the degree of rust on equipment, that is, the extent of salt damage, just by knowing the amount of salt adhering, so it will be possible to determine the timing of equipment replacement and maintenance. Optimization can be achieved.

Moreover, since the salt deposition meter 100 can know the wind direction at the installation position from the wind vanes 110 and 112, it is possible to obtain evidence for understanding changes in the voltage applied to the leakage detection band 102. As an example, when the salt deposition meter 100 is installed in a coastal area, when exposed to wind and rain from the sea side, the resistance value of the leakage detection band 102 decreases due to the high salt concentration in the water, and is recorded by the logger 126. The applied voltage also becomes smaller. On the other hand, when exposed to wind and rain from the mountain side, the salt attached to the leakage detection band 102 is washed away, and since the salt concentration in the water is low, the resistance value of the liquid leakage detection band 102 recovers and increases, and the logger 126 The recorded voltage also increases.

If, at time Ta in the graph of FIG. 3(b), the logger 126 records that the leak detection zone 102 was exposed to wind and rain from the sea side, and then received wind and rain from the mountain side, This proves that the output voltage value becomes smaller than the reference voltage value at time Ta, and that the output voltage value recovers thereafter. In this way, with the salt adhesion meter 100, the natural environment at the installation location can be understood by correlating changes in the voltage applied to the leakage detection zone 102 with the wind direction.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that those skilled in the art can come up with various changes and modifications within the scope of the claims, and these naturally fall within the technical scope of the present invention. Understood.

INDUSTRIAL APPLICATION This invention can be utilized as a salt adhesion meter which measures the amount of adhering salt at an installation position.

DESCRIPTION OF SYMBOLS 100... Salinity adhesion meter, 102... Leakage detection zone, 104... Weather louver, 106... Louver, 108... Solar cell, 110, 112... Wind vane, 114... Slanted surface of weather louver, 116... Side surface of weather louver, 118 ...Housing, 120...Top surface of the case, 122...Side surface of the case, 124...Voltmeter, 126...Logger, 128...Communication section, 130...Control section

Claims (3)

A leak detection band whose resistance value changes depending on the concentration of electrolyte in the water when it gets wet,
a power source that applies voltage to the liquid leakage detection band;
a logger that records changes in voltage applied to the liquid leakage detection zone in time series;
a communication unit that transmits the voltage recorded in the logger ;
Equipped with a wind vane ,
The salt deposit meter is characterized in that the logger records the change in the voltage as well as the wind direction obtained from the wind vane . The salt deposit meter according to claim 1 , wherein the power source is a solar cell. The salinity deposit meter according to claim 1 or 2 , wherein the communication unit performs wireless communication.

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