JP5101473B2 - Outdoor structure - Google Patents

Description

  The present invention relates to an outdoor structure that can prevent salt damage in advance while constantly monitoring changes in salt damage over time.

For example, since outdoor structures such as windmills are installed on the sea or on the coast, there is a concern that transformers, control panels, and the like provided inside the windmill may be corroded by salt damage.
For this reason, it is necessary to predict salt damage according to the material inside the device and the coating.

  As evaluation methods thereof, JISZ2371 “salt spray test method”, JISK5621 “combined cycle test” and the like have been established (Non-patent Documents 1 and 2).

  In recent years, a corrosion sensor has been proposed as a sensor for predicting the amount of salt corrosion (Patent Document 1).

  Explaining this corrosion sensor: When two dissimilar metals (substrate and conductive part) are insulated from each other by insulating parts, and both ends are exposed to the environment, a water film is connected between the two metals according to the environment. Corrosion current flows. Since this current corresponds to the corrosion rate of a base metal, it is used with the corrosion sensor.

This sensor is called “Atmospheric Corrosion Monitor” or ACM type corrosion sensor.
An example of this sensor is shown in FIGS. 6, 7-1 and 7-2. As shown in these drawings, an ACM-type corrosion sensor (hereinafter referred to as “corrosion sensor”) 110 was formed as a substrate 111 by cutting a carbon steel plate having a thickness of 0.8 mm into 64 mm × 64 mm. On top of this, an insulating portion 112 of an insulating paste (thickness 30 to 35 μm) was applied and cured using a precision screen printer for thick film ICs.
Subsequently, a conductive paste (thickness 30 to 40 μm, filler: Ag) is laminated and printed on the pattern of the insulating portion 112 so as to maintain the greenness with the substrate 111, and cured to form the conductive portion 113. A corrosion sensor is configured (Non-patent Document 3).
Then, as shown in FIG. 7-2, the conductive portion 113 and the substrate 111 are short-circuited by the water film 114 such as humidity and sea salt (chloride ions or the like), and the corrosion current of the Fe-Ag galvanic pair is reduced. It is measured by an ammeter 115. Reference numerals 116a and 116b are terminals.

  In addition, a method for predicting the amount of salt damage corrosion of solar power generation system members using the ACM type corrosion sensor is proposed, and the amount of attached sea salt is estimated from the relationship diagram between humidity, measured current value, and amount of sea salt attached. Has been proposed (Non-Patent Document 4).

JP 2008-157647 A JISZ2371 JISK5621 http://www.nims.go.jp/mdss/corrosion/ACM/ACM1.htm Matsushita Electric Works (Nov. 2002) p79-85

  However, in the JISZ2371 standard test and the JISK5621 standard test, there is a problem that the test accuracy is poor because the test environment does not match the actual environment.

  Although the degree of corrosion can be estimated from the corrosion current using an ACM type corrosion sensor, most of the materials of each component constituting the outdoor component are painted, so the individual There is a problem that the degree of corrosion cannot be determined as appropriate according to the state of the coating film (the type of coating film, the thickness of the coating film, etc.).

  That is, in an outdoor structure such as a windmill or the like, outside air is introduced to prevent internal heat generation, and members according to the environment of the site considering the case where sea salt is accompanied by the outside air. It is eager to accurately grasp the timing of parts maintenance.

  This invention makes it a subject to provide the outdoor structure which can judge the degree of corrosion according to an installation environment exactly in view of the said problem.

A first invention of the present invention for solving the above-described problem is provided with an ion measuring device that is provided in at least one place of a structure exposed to the outside air environment and detects ion information that causes salt damage. The ion measuring device includes a rainwater recovery chamber for temporarily collecting water, an ion electrode for ion analysis provided in the rainwater recovery chamber, and an mortar provided at an upper portion of the rainwater recovery chamber. A mortar-shaped portion that collects rainwater containing corrosive factors in a central recess, and a rainwater collector that drops rainwater into the rainwater recovery chamber from a hole communicating with the recess, and In the outdoor structure, the same coating film as that applied to the surface of each constituent material of the structure is applied to the mortar surface of the mortar-shaped part .

The second invention is provided with an ion measuring device that is provided at at least one place of a structure exposed to the outside air environment and detects ion information that causes salt damage, and the ion measuring device temporarily stores rainwater. A rainwater collection chamber to be collected in the rainwater recovery chamber and an ion chromatograph for ion analysis, and provided at the upper part of the rainwater recovery chamber, with a corrosive factor in the depression at the center of the mortar shape A mortar-shaped portion that collects rainwater including a rainwater-collecting portion that drops falling rainwater into the rainwater-collecting chamber from a hole communicating with the recess, and the mortar-shaped surface of the mortar-shaped portion The outdoor structure is characterized in that the same coating film as that applied to the surface of each constituent material of the structure is applied .

According to a third aspect of the present invention, there is provided an ion measurement device that is provided at at least one location of a structure exposed to the outside air environment and detects ion information that causes salt damage. The rainwater is collected from a mortar-shaped portion that is provided in the upper portion of the rainwater recovery chamber and collects rainwater containing a corrosive factor in a mortar-shaped central recess, and a hole communicating with the recess. A rainwater collecting part to be dropped into the rainwater collecting chamber is applied, and the same coating film as that applied to the surface of each constituent material of the structure is applied to the mortar surface of the mortar-shaped part. The outdoor structure is characterized by the following.

A fourth invention is an outdoor structure according to any one of the first to third inventions, wherein the outdoor structure is a wind power generator.

  ADVANTAGE OF THE INVENTION According to this invention, the time-dependent change by the effect | action of corrosive factors, such as sea salt and rain water, can be rapidly ion-analyzed in the field of the installation place of an outdoor structure. In addition, by applying the same coating film as applied to each constituent material, the degree of deterioration of each constituent member can be individually determined.

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

An outdoor structure according to Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram of an ion measurement apparatus according to the first embodiment. FIG. 2 is a schematic diagram of a wind turbine generator that is an example of an outdoor structure.
As shown in these drawings, the ion measuring apparatus 10A according to the present embodiment is provided in at least one place of a structure (for example, a wind power generation apparatus) exposed to the outside air environment, for example, ion information that causes salt damage. A rainwater recovery chamber 12 that temporarily detects rainwater 11 and the like containing corrosive factors, and an ion electrode 13 that is provided in the rainwater recovery chamber 12 and performs ion analysis are provided. Here, the bottom of the rainwater recovery chamber 12 is tapered so that the rainwater 11 collects on the ion electrode 13. Reference numeral 14 denotes an ion meter that measures ion information from the ion electrode.

In the present embodiment, a rainwater collecting unit 20 that further collects rainwater and the like is provided in the upper part of the rainwater collecting chamber 12.
The rainwater collecting part 20 is provided in the upper part of the rainwater collecting chamber 12, and is connected to the mortar part 22 and a mortar part 22 that collects rainwater 11 containing a corrosive factor in a mortar-like dent part 21. The falling rainwater 24 is dropped into the rainwater collecting chamber 12 from the hole 23.

Here, at the time of ion measurement, it may be set as appropriate every fixed period or at the time of rainwater.
Further, when there is no moisture at the time of measurement, pure water may be sprayed on the surface of the mortar-shaped portion 22 and collected.

The ion electrode 13 measures ion information (cations and anions) in the rainwater 11 including the corrosive factor that has dropped.
Here, as ion information in the rainwater 11 containing a corrosive factor, examples of cations include Fe ions, Cu ions, Al ions, Na ions, Mg ions, Cr ions, Ni ions, and the like.
Examples of the anion include Cl ion, OH ion, SO ₄ ion, SO ₃ ion, and the like.

  Further, instead of ion measurement at the ion electrode, ion components may be separated by column using ion chromatography and analyzed as a chromatogram.

  Here, the wind power generator 100 shown in FIG. 2 will be described. As shown in FIG. 2, the wind power generator 100 includes, for example, a tower 102 installed on the ground part 101 and a nacelle 103 provided at the upper end of the tower 102. The nacelle 103 can turn in the yaw direction and is directed in a desired direction by a nacelle turning mechanism (not shown). The nacelle 103 is equipped with a generator 104 and a speed increaser 105. The rotor of the generator 104 is joined to the main shaft 107 of the wind turbine rotor 106 via the speed increaser 105. The windmill rotor 106 includes a hub 108 connected to the main shaft 107 and blades 109 attached to the hub 108.

  A specific installation state of the ion measuring apparatus is shown in FIG. As shown in FIG. 2, the ion measuring device 10 </ b> A is installed horizontally via the horizontal support portion 25 of the tower 102.

As a result of exposure to the outside air, rainwater 11 containing corrosive factors such as sea salt and rainwater enters the rainwater recovery chamber 12 as falling rainwater, and the ion information is detected by the ion meter 14 by the ion electrode 13. Like to do.
As a result, it is possible to always accurately grasp the state of change over time.
That is, the rainwater collecting unit 20 collects the rainwater 11 containing a corrosive factor and collects the corrosive factor such as dust and sea salt together with the rainwater because the rainwater 11 is collected from the hole 23 into the rainwater collecting chamber 12. Can do.

  As a result, it is possible to quickly establish a response corresponding to changes with time and a plan for maintenance work.

An outdoor structure according to a second embodiment of the present invention will be described with reference to the drawings.
FIG. 3 is a schematic diagram of an ion measurement apparatus according to the second embodiment. FIG. 4 is a schematic diagram of a wind turbine generator that is an example of an outdoor structure.
In the ion measuring apparatus 10 </ b> B of the present embodiment, the coating film 25 </ b> A is applied to the mortar surface and the hole 23 of the mortar-shaped portion 22 in the ion measuring apparatus 10 </ b> A of the first embodiment.
The coating is applied with a paint applied to an outdoor structure such as a generator 104 of a wind power generator.
In this embodiment, the coating film of the generator 104 is 16A, and the coating film of the speed increaser 105 is 25B.
Here, the material of the mortar-shaped portion 22 is made of stainless steel in order to detect iron ions.

  A specific installation state of the ion measuring device is shown in FIG. As shown in FIG. 4, the ion detectors 10 </ b> B- 1 (coating film 25 </ b> A) and 10 </ b> B- 2 (coating film 25 </ b> B) are installed horizontally via the horizontal support part 25 of the tower 102.

  Then, due to deterioration over time, when one or both of the coating film 25A or 25B cracks and the like, and a deteriorated part is formed, iron ions on the mortar-like surface contain corrosion factors from this deteriorated part. Degradation can be determined by leaching into the rain water 11 and measuring the ions with the ion electrode 13.

  In other words, until the deterioration occurs, the mortar-shaped portion and the hole are protected by the coating film, and thus there is no detection of iron ions that are constituent materials of the mortar-shaped portion. However, when the deterioration occurs, iron ions ooze out and the deterioration of the coating film can be determined.

  In the present embodiment, the mortar-shaped portion 22 is made of stainless steel, and iron ions are detected. However, the present invention is not limited to this, and if not made of stainless steel, it will not be measured by a corrosion factor. Before applying the coating film 25A, a material containing specific ions is applied as a base layer in advance so that specific ions ooze out from the base layer due to deterioration. You may make it detect with the meter 14. FIG.

Thus, since the evaluation of the paint can be performed individually, by preparing an ion measuring device to which the coating films 25A, 25B, etc. corresponding to the respective constituent members are applied, the respective coating films 25A, The degree of deterioration such as 25B... Can be determined.
As a result, a construction plan for the structure and a plan for the maintenance work can be constructed.

An outdoor structure according to a third embodiment of the present invention will be described with reference to the drawings.
FIG. 5 is a schematic diagram of an ion measurement apparatus according to the third embodiment.
The ion measurement apparatus 10C using a laser spectroscopically analyzes light emission information generated by the laser apparatus 30 that irradiates the rainwater recovery chamber 12 with the laser light 31 and the laser light 31 applied to the rainwater 11 via the mirror 33 and the lens 34. It is introduced into a device 35 and detected by a CCD (Charge Coupled Device) camera 36.
In FIG. 5, reference numerals 32a and 32b denote quartz windows, 37 denotes a beam damper, 38 denotes a valve, and 39 denotes drainage.

The laser device 30 is a YAG pulse laser having an output of about 100 mJ to 1 J and having a wavelength of 1064 nm, for example.
As ions obtained by this laser emission method, for example, ions such as Na, Mg, K, Ca, Fe, and Cl can be detected.
Thereby, detection of corrosive components such as Fe ions can be quickly detected.

  The above has been described by using, for example, a wind power generator as the outdoor structure of the present invention, but the present invention is not limited to this, and bridge facilities, solar cell facilities, etc. that require countermeasures against salt damage on the coast, etc. It can also be applied to. Furthermore, it can also be applied to salt damage countermeasures for moving bodies such as vehicles and ships.

  As described above, the outdoor structure according to the present invention can grasp the situation of the installation environment by analyzing the rainwater that causes salt damage, and is used, for example, to determine the deterioration of the components of the wind power generator. Is suitable.

1 is a schematic diagram of an ion measurement apparatus according to Embodiment 1. FIG. 1 is a schematic diagram of a wind turbine generator that is an example of an outdoor structure according to Embodiment 1. FIG. 6 is a schematic diagram of an ion measurement apparatus according to Embodiment 2. FIG. It is the schematic of the wind power generator which is an example of the outdoor structure which concerns on Example 2. FIG. 6 is a schematic diagram of an ion measurement apparatus according to Embodiment 3. FIG. It is a top view of the corrosion sensor which concerns on a prior art. It is the schematic of the corrosion sensor which concerns on a prior art. It is the schematic at the time of the corrosion of a prior art.

Explanation of symbols

10A, 10B, 10B-1, 10B-2, 10C Ion detection device 10C Ion measurement device using laser 11 Rainwater containing corrosive factors 12 Rainwater recovery chamber 13 Ion electrode 20 Rainwater collection unit

Claims (4)

Provided in at least one place of the structure exposed to the outside air environment, comprising an ion measuring device that detects ion information causing salt damage,
The ion measuring device is
A rainwater collection room for temporarily collecting rainwater;
The rainwater recovery chamber is provided with an ion electrode for ion analysis ,
Provided in the upper part of the rainwater recovery chamber,
A mortar-shaped part that collects rainwater containing a corrosive factor in a hollow part at the center of the mortar, and a rainwater collecting part that drops falling rainwater into the rainwater collection chamber from a hole communicating with the hollow part, and,
An outdoor structure obtained by applying the same coating film as the coating applied to the surface of each constituent material of the structure to the mortar-shaped surface of the mortar-shaped portion . Provided in at least one place of the structure exposed to the outside air environment, comprising an ion measuring device that detects ion information causing salt damage,
The ion measuring device is
A rainwater collection room for temporarily collecting rainwater;
The rainwater recovery chamber is provided with an ion chromatograph for ion analysis ,
Provided in the upper part of the rainwater recovery chamber,
A mortar-shaped part that collects rainwater containing a corrosive factor in a hollow part at the center of the mortar, and a rainwater collecting part that drops falling rainwater into the rainwater collection chamber from a hole communicating with the hollow part, and,
An outdoor structure obtained by applying the same coating film as the coating applied to the surface of each constituent material of the structure to the mortar-shaped surface of the mortar-shaped portion . Provided in at least one place of the structure exposed to the outside air environment, comprising an ion measuring device that detects ion information causing salt damage,
While the ion measuring device measures ions by laser measurement ,
Provided in the upper part of the rainwater recovery chamber,
A mortar-shaped part that collects rainwater containing a corrosive factor in a hollow part at the center of the mortar, and a rainwater collecting part that drops falling rainwater into the rainwater collection chamber from a hole communicating with the hollow part, and,
An outdoor structure obtained by applying the same coating film as the coating applied to the surface of each constituent material of the structure to the mortar-shaped surface of the mortar-shaped portion . In any one of Claims 1 thru | or 3 ,
The outdoor structure is a wind power generator.

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