Corrosion prevention system of long structure inside and corrosion prevention method of long structure inside

Abstract

To dehumidify the internal spaces of a long structure without waste or unevenness.SOLUTION: The corrosion prevention system inside a long structure includes: a partition section that divides the space of a long structure into multiple cells in one direction; piping with supply ports for supplying dehumidified air to each cell; humidity detection sections that are provided at multiple locations for each cell and detect the humidity within the cell; and a control section that adjusts the valve opening and blower air volume based on the detection results of the humidity detection sections. The control section acquires the detection results of the humidity detection sections as input information, and uses a learning model that was machine-learned by associating the detection results of each humidity detection section with an operating state of a dehumidification section, the opening degree of each valve, and the air volume of the blower to estimate the operating state of dehumidification section and the opening of each valve and the air volume of the blower based on the input information, and adjusts the operating state of the dehumidification section, the opening of each valve and the air volume of the blower based on the estimation results.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a corrosion prevention system for the inside of a long structure and a corrosion prevention method for the inside of a long structure. [Background technology]

[0002] When a space is provided inside a long structure such as a bridge, there is a risk that moisture may enter the space and corrode the long structure from the inside, so a configuration for dehumidifying the space is known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-350907 Summary of the Invention [Problem to be solved by the invention]

[0004] In the description of Patent Document 1, the space inside the long structure extends in one direction, which makes it difficult to dehumidify the space over the entire one direction without waste or unevenness.

[0005] The present invention has been made in consideration of the above, and aims to provide a corrosion prevention system and a corrosion prevention method for the interior of a long structure that are capable of dehumidifying the space inside the long structure without waste or unevenness. [Means for solving the problem]

[0006] The corrosion prevention system for the interior of a long structure according to the present invention includes a partition section that divides a space section of a long structure that has an interior space extending in one direction into a plurality of cells in the one direction, a pipe that is provided across each of the cells divided by the partition section and has a supply port that supplies dehumidified air to each of the cells, a dehumidifier that supplies dehumidified air to the pipes, a valve that is provided for each of the supply ports of the pipes and adjusts the flow rate of the dehumidified air that is supplied to the cell, a blower that blows air from one cell to an adjacent cell, and humidity detectors that are provided at a plurality of locations for each of the cells and detect the humidity within the cell. and a control unit that adjusts the operating state of the dehumidification unit, the opening degree of the valves, and the air volume of the blower based on the detection results of the humidity detection unit. The control unit obtains the detection results of the humidity detection units as input information, and estimates the operating state of the dehumidification unit, the opening degree of each of the valves, and the air volume of the blower in response to the input information using a learning model that has been machine-learned by correlating the detection results of each of the humidity detection units with the operating state of the dehumidification unit, the opening degree of each of the valves, and the air volume of the blower, and adjusts the operating state of the dehumidification unit, the opening degree of the valves, and the air volume of the blower based on the estimation results.

[0007] The corrosion prevention method for the inside of a long structure according to the present invention includes a partition section that divides a space section of a long structure having a space section extending in one direction into a plurality of cells in the one direction, a pipe that is provided across each of the cells divided by the partition section and has a supply port that supplies dehumidified air to each of the cells, a dehumidification section that supplies dehumidified air to the pipe, a valve that is provided for each of the supply ports of the pipe and adjusts the flow rate of the dehumidified air supplied to the cell, a blower that blows air from one cell to an adjacent cell, and a plurality of air blowers for each of the cells. and a humidity detection unit that detects humidity within the cell, wherein the detection results of the humidity detection unit are obtained as input information, and a learning model is generated by machine learning that associates the detection results of each humidity detection unit with the operating state of the dehumidification unit, the opening degrees of each of the valves, and the air volume of the blower, to estimate the operating state of the dehumidification unit, the opening degrees of each of the valves, and the air volume of the blower in response to the input information, and the operating state of the dehumidification unit, the opening degrees of the valves, and the air volume of the blower are adjusted based on the estimation results. [Effects of the Invention]

[0008] According to the present invention, the space inside a long structure can be dehumidified without waste or unevenness. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram (cross-sectional view seen from above) showing an example of a corrosion prevention system (corrosion prevention system for the inside of a long structure) according to this embodiment. [Figure 2] FIG. 2 is a schematic diagram (cross-sectional view seen from the side) showing an example of a corrosion prevention system (corrosion prevention system for the inside of a long structure) according to this embodiment. [Figure 3] FIG. 3 is a diagram showing the configuration along the cross section AA in FIG. [Figure 4] FIG. 4 is a diagram showing a model of air flows in the first and second portions of the cells in the space. [Figure 5]FIG. 5 is a functional block diagram illustrating an example of the control unit. [Figure 6] FIG. 6 is a flowchart showing an example of a corrosion prevention method for a long structure. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of a corrosion prevention system and a corrosion prevention method for the interior of a long structure according to the present invention will be described with reference to the drawings. Note that the present invention is not limited to these embodiments. Furthermore, the components in the following embodiments include those that are easily replaceable by those skilled in the art, or those that are substantially identical.

[0011] 1 and 2 are schematic diagrams showing an example of a corrosion prevention system (corrosion prevention system for the interior of a long structure) according to this embodiment. FIG. 1 is a cross-sectional view seen from above, and FIG. 2 is a cross-sectional view seen from the side. FIG. 3 is a diagram showing the configuration along cross section AA in FIG. 1. The humidity detection unit 60 is not shown in FIGS. 1 and 2.

[0012] As shown in Figures 1 and 2, the corrosion prevention system SYS according to this embodiment prevents corrosion of a long structure 100 such as a bridge by dehumidifying a space 90 inside the long structure 100. The long structure 100 is configured to extend in one direction (hereinafter referred to as a first direction D1), and the space 90 is also configured to extend in the first direction D1 along the long structure 100. In the cross-sectional view shown in Figure 3, the space 90 is surrounded by a wall 80 that constitutes the long structure 100.

[0013] The corrosion prevention system SYS includes a partition unit 10, a pipe 20, a dehumidifying unit 30, a valve 40, a blower 50, a humidity detecting unit 60, and a control unit .

[0014] The dehumidification section 30 includes a dehumidified air supply section 31, an air recovery section 32 inside the girder, a dehumidification processing section 33, an outside air intake section 34, and a moist air exhaust section 35.

[0015] The partitions 10 divide the space 90 into a plurality of cells S in the first direction D1. In other words, the partitions 10 divide the space 90 into a plurality of cells S in the first direction D1. The partitions 10 do not need to completely divide the space 90 in the first direction D1, and structures such as ribs (horizontal ribs) arranged in the first direction D1 can serve as the partitions 10. In this case, adjacent cells S are in communication with each other via communication portions 11.

[0016] In this embodiment, an example will be described in which the cells are divided so that a communication portion 11 is formed between adjacent cells S. The second direction D2 is the width direction of the long structure 100, and is a direction perpendicular to the first direction D1 and the height direction D3.

[0017] The piping 20 is provided across each of the cells S separated by the partitions. The piping 20 has a supply port 21 that supplies dehumidified air to each of the cells S. The piping 20 is disposed in the space 90 at the center in a second direction D2 that is perpendicular to the first direction D1, and at the upper end in a height direction D3. The supply port 21 is disposed at the bottom of the piping 20, and supplies dehumidified air F1 downward from the piping 20.

[0018] The dehumidifier 30 supplies dehumidified air F1 to the pipe 20 via the dehumidified air supply unit 31. The dehumidifier 30 can be disposed, for example, at one end of the space 90 in the first direction D1. Hereinafter, the side of the space 90 where the dehumidifier 30 is provided will be referred to as the upstream side in the first direction D1, and the side opposite the upstream side will be referred to as the downstream side in the first direction D1. In this embodiment, the intra-girder air recovery unit 32 recovers air F5 from the multiple cells S. The dehumidifier 33 heats the recovered air F5 to saturate it with a large amount of water vapor and discharges the air F5 to the outside of the space 90 via the humid air exhaust unit 35. The outside air intake unit 34 draws in outside air. The dehumidifier 33 cools the drawn outside air to adjust the humidity, thereby reducing the saturated water vapor. The dehumidifier 33 supplies dehumidified air F1, which is outside air that has undergone humidity adjustment, from the dehumidified air supply unit 31 to the pipe 20. The moisture removed by the dehumidification treatment unit 33 in this process is saturated when the air F5 recovered in the air recovery unit 32 within the beam is heated, and the air becomes moist and is discharged from the moist air inlet unit 34.

[0019] A valve 40 is provided for each supply port 21 of the pipe 20. The valve 40 adjusts the flow rate of the dehumidified air F1 supplied to the cell S by adjusting the opening degree. The opening degree of each valve 40 can be adjusted individually. The opening degree of the valve 40 is controlled by the control unit 70.

[0020] The blower 50 is provided between adjacent cells S. The blower 50 blows air from the cells S between the adjacent cells S. The blower 50 is disposed in the center of the second direction D2. As shown in FIG. 3, the blower 50 is disposed directly below the supply port 21 when viewed from the first direction D1.

[0021] The blowers 50 blow air within the girders from the downstream cell S to the upstream cell S in the first direction D1. Each blower 50 can individually adjust the air volume per unit time (hereinafter simply referred to as air volume) when blowing dehumidified air F. The air volume of the blowers 50 is controlled by the control unit 70.

[0022] The humidity detection units 60 are provided at multiple locations for each cell S. The humidity detection units 60 detect the humidity in the cells S and transmit the detection results to the control unit .

[0023] In this embodiment, each cell S is surrounded by a wall 80 and a partition 10. As shown in FIG. 3 , each cell S conceptually includes a first portion S1 and a second portion S2 for constructing a control model. When viewed along the AA cross section in the first direction D1, the first portion S1 and the second portion S2 are concentric regions. The first portion S1 is a peripheral portion of the space 90, i.e., a cylindrical space along the wall 80. The first portion S1 faces the wall 80 of the long structure 100 that surrounds the space 90, and is a portion into which humid air F2 from outside the space 90 infiltrates through gaps that may exist on the wall 80, such as splices, scallops, and manholes. The second portion S2 is a space inside the first portion S1, and is, for example, a space shown as a rectangular parallelepiped along the wall 80 for convenience in FIG. 3 . Note that the second portion S2 is not limited to a rectangular parallelepiped shape. In this embodiment, the second section S2 includes the supply port 21 and is a section to which dehumidified air F1 is directly supplied from the supply port 21. The vertical boundary between the first section S1 and the second section S2 can be set, for example, so that the supply port 21 is included in the second section S2. Note that each of the blowers 50 described above is disposed in the second section S2. Air movement occurs between the adjacent sections S1 and S2 due to a pressure difference between the sections caused by the flow generated by the supply port 21 and the action of the blower 50. Therefore, the blower 50 can sequentially replace the existing air in the upstream cells S with air whose humidity has been relatively reduced by mixing the air F2 with the existing air and the dehumidified air F1 (dehumidified air F4).

[0024] In this embodiment, the humidity detection unit 60 is provided in each of the first portion S1 and the second portion S2 in each cell S. In the following description, the humidity detection unit 60 provided in the first portion S1 may be referred to as the first humidity detection unit 61, and the humidity detection unit 60 provided in the second portion S2 may be referred to as the second humidity detection unit 62. The first humidity detection unit 61 may be attached to the wall portion 80 in each cell S, for example. The second humidity detection unit 62 may be hung from the ceiling or the like in each cell S, or, if a structure such as a rib is provided in the second portion S2, may be attached to the structure.

[0025] Here, various structures such as bridge ribs are arranged in the space 90 inside the long structure 100. When a circulating supply is performed in which dehumidified air F1 is supplied from the supply port 21 by the dehumidifier 30 while air is collected via the communication part 11 and the blower 50 as in this embodiment, the pressure gradient in the first direction D1 differs in the first part S1 and the second part S2 partitioned as described above due to the influence of the structures, the partition part 10, etc.

[0026] 4 is a diagram modeling the flow of dehumidified air in each of the first portion S1 and the second portion S2 of the cell S of the space portion 90. In the example shown in FIG. 4, humid air F2 is supplied to the first portion S1 from the wall portion 80. Furthermore, dehumidified air F1, the humidity of which has been adjusted, is supplied to the second portion S2 from the pipe 20 via the supply port 21 and the valve 40. The dehumidified air F1 supplied to the second portion S2 flows into the first portion S1 of the cell S.

[0027] The dehumidified air F1 and air F2 supplied to the first portion S1 flows as air F3 into the first portion S1 of the cell S on the upstream side in the first direction D1 through the communication portion 11. The dehumidified air F1 supplied to the second portion S2 is blown by the blower 50 into the second portion S2 of the upstream cell S as dehumidified air F4.

[0028] The control unit 70 adjusts the opening degree of the valve 40 based on the detection result of the humidity detection unit 60. Fig. 5 is a functional block diagram showing an example of the control unit 70. As shown in Fig. 5, the control unit 70 has a communication unit 71, a processing unit 72, and a storage unit 73.

[0029] The communication unit 71 performs wired or wireless communication with external devices and includes an interface such as a network interface card.

[0030] The processing unit 72 performs various types of information processing and includes a processor such as a CPU (Central Processing Unit) and memories such as a ROM (Read Only Memory) and a RAM (Random Access Memory).

[0031] The processing unit 72 includes an acquisition unit 74 and an estimation unit 75 .

[0032] The acquisition unit 74 acquires the detection results of the humidity detection units 60 as input information.

[0033] The estimation unit 75 estimates the opening degree of the valve 40 and the air volume of the blower 50 corresponding to the input information acquired by the acquisition unit 74 (detection results of the humidity detection unit 60). The estimation unit 75 estimates the opening degree of the valve 40 and the air volume of the blower 50 using a learning model M described below. The estimation unit 75 outputs the estimated opening degree of the valve 40 and the air volume of the blower 50.

[0034] The learning model M is a learning model that has machine-learned the correspondence between the detection results of each humidity detection unit 60 and the opening degrees of each valve 40 and the airflow rates of the blower 50 as a data set. When the detection results of the humidity detection units 60 are input as input information, the learning model M outputs the opening degrees of the valves 40 and the airflow rates of the blower 50 that correspond to the input information as output information.

[0035] The detection results of the humidity detection unit 60 are obtained by separately detecting, for each cell S, the detection result of the first portion S1 by the first humidity detection unit 61 and the detection result of the second portion S2 by the second humidity detection unit 62. In this way, by having the learning model M learn the detection result of the first portion S1 and the detection result of the second portion S2 for each cell S as separate data, it is possible to obtain estimation results that better reflect the influence of external moisture infiltrating into the space 90 from the wall portion 80 and the influence of pressure loss in the first direction D1 toward the dehumidification unit 30.

[0036] The learning model M in this embodiment refers to a learning model in AI (Artificial Interigence). Specifically, the learning model M is a learning model trained using deep learning as an example, and is composed of variables and a model (configuration information of the neural network) that defines a neural network that constitutes a classifier trained by deep learning.

[0037] The storage unit 73 stores information such as various programs and data. The storage unit 73 includes storage such as a hard disk drive (HDD) and a solid state drive (SSD). The storage unit 73 stores, for example, the learning model M described above.

[0038] In the control unit 70, the processor in the processing unit 72 reads out various programs and loads them into memory, thereby executing information processing corresponding to the functions of the above-mentioned units. Examples of the various programs include programs received by the communication unit 71, programs stored in the storage unit 73, and programs recorded on an external recording medium. The control unit 70 functions as an information processing device (computer) that executes various information processes. Note that the various programs may be executed by an information processing device other than the control unit 70, or the control unit 70 and the other information processing device may cooperate to execute the various programs.

[0039] In this embodiment, the control unit 70 receives the detection results of the humidity detection units 60 as input information, and uses the learning model M, which has been machine-learned by associating the detection results of each humidity detection unit 60 with the operating state of the dehumidification unit 30, the opening degrees of each valve 40, and the airflow rate of the blower 50, to estimate the operating state of the dehumidification unit 30, the opening degrees of each valve 40, and the airflow rate of the blower 50 in response to the input information.The control unit 70 then adjusts the operating state of the dehumidification unit 30, the opening degrees of the valves 40, and the airflow rate of the blower 50 based on the estimation results.The operating state of the dehumidification unit 30 includes a state in which the dehumidification unit 30 is operating and a state in which the operation of the dehumidification unit 30 is stopped.The operating state of the dehumidification unit 30 may be set to multiple stages, for example, depending on the intensity of operation. By adjusting the opening degree of the valve 40, the amount of dehumidified air F1 supplied to the cell S from the pipe 20 per unit time and the amount of dehumidified air F4 sent to the downstream cell S by the blower 50 per unit time can be adjusted for each cell S.

[0040] Next, an explanation will be given of the operation of the corrosion prevention system SYS configured as described above for preventing corrosion of the long structure 100. Fig. 6 is a flowchart showing an example of a corrosion prevention method for the long structure 100.

[0041] First, the dehumidifying unit 30 supplies dehumidified air F1 to the pipe 20 (step S10). The pipe 20 is supplied with dehumidified air F1, the humidity of which has been adjusted by a dehumidifier provided in the dehumidifying unit 30. The dehumidified air F1 supplied from the dehumidifying unit 30 flows through the pipe 20 and is supplied to each cell S (second portion S2) via a supply port 21 and a valve 40 provided in the cell S. Furthermore, the dehumidified air F supplied in each cell S is blown by the blower 50 to the cell S immediately upstream as dehumidified air F4 (step S20). Furthermore, the dehumidifying unit 30 recovers air F3 from the plurality of cells S via the communication portion 11 (step S30). As a result of the operation of the dehumidifier 30 and the blower 50, the following flows of dehumidified air F1 and F3 are formed in the space 90 inside the long structure 100: one circulating through the dehumidifier 30, the piping 20, the supply port 21 and the valve 40, the first part S1 of the cell S, the connecting part 11, and the dehumidifier 30 in that order; and the other circulating through the dehumidifier 30, the piping 20, the supply port 21 and the valve 40, the second part S2 of the cell S, the blower 50, and the dehumidifier 30 in that order.

[0042] Meanwhile, external humid air F2 enters the space 90 through the wall 80. The air F2 is supplied to each cell S (first portion S1) from the wall 80, and flows from the communication portion 11 to the dehumidifying portion 30 along the flow of the dehumidified airs F1 and F3 circulating as described above.

[0043] In the operation of the dehumidifying unit 30, the humidity detecting unit 60 provided in each cell detects humidity and transmits the detection results to the control unit 70 (step S40). In the control unit 70, the acquiring unit 74 acquires the detection results of each humidity detecting unit 60 (step S50). The detection results include the detection results of the first humidity detecting unit 61 and the second humidity detecting unit 62 for each cell S separately. The estimating unit 75 estimates the operating state of the dehumidifying unit 30, the opening degree of the valve 40, and the air volume of the blower 50 using the learning model M based on the acquired detection results (step S60). The estimating unit 75 uses the detection results acquired by the acquiring unit 74 as input information and outputs information from the learning model M as estimated results of the operating state of the dehumidifying unit 30, the opening degree of the valve 40, and the air volume of the blower 50. The estimated results are control information for individually controlling the operating state of the dehumidifying unit 30, the opening degree of the valve 40, and the air volume of the blower 50 of each cell S. The control unit 70 adjusts the operating state of the dehumidifying unit 30, the opening degree of the valve 40, and the air volume of the blower 50 individually based on the estimation result of the estimating unit 75 (step S70).

[0044] As described above, the corrosion prevention system SYS according to this embodiment includes a partition section 10 that divides the space section 90 of a long structure 100, which has a space section 90 extending in the first direction D1 therein, into a plurality of cells S in the first direction D1, a pipe 20 that is provided across each of the cells S divided by the partition section 10 and has a supply port 21 that supplies dehumidified air to each of the cells S, a dehumidifier 30 that supplies dehumidified air to the pipe 20, a valve 40 that is provided for each supply port 21 of the pipe 20 and adjusts the flow rate of the dehumidified air supplied to the cell S, and a blower 50 that blows the dehumidified air supplied from the supply port 21 between adjacent cells S, and is provided at a plurality of locations for each cell S, The control unit 70 is provided with a humidity detection unit 60 that detects the humidity within the cell S, and a control unit 70 that adjusts the operating state of the dehumidification unit 30, the opening degree of the valve 40, and the air volume of the blower 50 based on the detection results of the humidity detection unit 60. The control unit 70 acquires the detection results of the humidity detection unit 60 as input information, and uses a learning model M that has been machine-learned by correlating the detection results of each humidity detection unit 60 with the operating state of the dehumidification unit 30, the opening degree of each valve 40, and the air volume of the blower 50 to estimate the operating state of the dehumidification unit 30, the opening degree of each valve 40, and the air volume of the blower 50 in response to the input information, and adjusts the operating state of the dehumidification unit 30, the opening degree of the valve 40, and the air volume of the blower 50 based on the estimation results.

[0045] The corrosion prevention method for a long structure 100 according to this embodiment includes a partition section 10 that divides the space section 90 of the long structure 100, which has a space section 90 extending in a first direction D1 therein, into a plurality of cells S in the first direction D1, a pipe 20 that is provided across each of the cells S divided by the partition section 10 and has a supply port 21 that supplies dehumidified air to each of the cells S, a dehumidifying section 30 that supplies dehumidified air to the pipe 20, a valve 40 that is provided for each supply port 21 of the pipe 20 and adjusts the flow rate of the dehumidified air supplied to the cells S, and a blower 50 that blows the dehumidified air supplied from the supply port 21 between adjacent cells S, and A corrosion prevention method for the inside of a long structure (100) that includes humidity detection units (60) provided at multiple locations for each cell (S) and that detect the humidity within the cell (S), wherein the detection results of the humidity detection units (60) are obtained as input information, and a learning model (M) that has been machine-learned by associating the detection results of each humidity detection unit (60) with the operating state of the dehumidification unit (30), the opening degree of each valve (40), and the air volume of the blower (50) estimates the operating state of the dehumidification unit (30), the opening degree of each valve (40), and the air volume of the blower (50) in response to the input information, and adjusts the operating state of the dehumidification unit (30), the opening degree of the valve (40), and the air volume of the blower (50) based on the estimation result.

[0046] According to this configuration, the learning model M can estimate the operating state of the dehumidification unit 30, the opening degree of the valve 40, and the air volume of the blower 50, which correspond to the detection results of the humidity detection unit 60, which is the input information, and therefore it is possible to dehumidify the space 90 inside the long structure 100 without waste (drying it to below the expected relative humidity) or unevenness (preventing the existence of areas where the expected relative humidity is not met).

[0047] In the corrosion prevention system SYS of this embodiment, the cell S, when viewed in cross section along a plane perpendicular to the first direction D1, includes an annular first portion S1 along the periphery of the space portion 90 and a second portion S2 inside the first portion S1, and the humidity detection unit 60 is provided in the first portion S1 and the second portion S2 in each cell S.

[0048] According to this configuration, by having the learning model M learn the detection results of the first part S1 and the detection results of the second part S2 as separate data, when the influence of the first part S1 and the second part S2 differs, an estimation result that better reflects the influence of each part can be obtained.

[0049] In the corrosion prevention system SYS of this embodiment, the first part S1 faces the wall part 80 of the long structure 100 that surrounds the space part 90, and is the part through which humid air F2 from outside the space part 90 penetrates through the wall part 80.

[0050] According to this configuration, an estimation result that better reflects the influence of external moisture infiltrating into the space 90 from the wall 80 can be obtained.

[0051] In the corrosion prevention system SYS according to this embodiment, the second section S2 includes the supply port 21, and is a section to which the dehumidified air F1 from the supply port 21 is directly supplied.

[0052] According to this configuration, an estimation result that better reflects the influence of the portion to which the dehumidified air F1 is directly supplied from the supply port 21 can be obtained.

[0053] In the corrosion prevention system SYS according to this embodiment, the blower 50 is disposed in the second section S2.

[0054] According to this configuration, the blower 50 can send the dehumidified air F1 (dehumidified air F4) supplied from the supply port 21 to the upstream cell S while suppressing the mixing of the air F2 containing moisture. This allows the space 90 to be efficiently dehumidified.

[0055] In the corrosion prevention system SYS according to this embodiment, the blower 50 is disposed below the supply port 21 when viewed from the first direction D1.

[0056] According to this configuration, the blower 50 can send the dehumidified air F1 (dehumidified air F4) supplied from the supply port 21 to the upstream cell S while suppressing the mixing of the air F2 containing moisture. This allows the space 90 to be efficiently dehumidified.

[0057] In the corrosion prevention system SYS of this embodiment, the multiple cells S are divided by partitions 10 so that they are connected to each other in the first direction D1, and the dehumidification section 30 collects the air in the multiple cells S through the connecting parts and the blower 50, dehumidifies it, and supplies it to the piping 20.

[0058] According to this configuration, for example, an estimation result that better reflects the influence of pressure loss in the first direction D1 toward the dehumidifying unit 30 can be obtained.

[0059] The technical scope of the present invention is not limited to the above-described embodiments, and appropriate modifications can be made without departing from the spirit of the present invention. [Explanation of symbols]

[0060] D1...first direction, D2...second direction, D3...height direction, M...learning model, S...cell, S1...first part, S2...second part, SYS...corrosion prevention system, 10...partition section, 11...communicating section, 20...piping, 21...supply port, 30...dehumidification section, 31...dehumidified air supply section, 32...air recovery section within girder, 33...dehumidification treatment section, 34...outside air intake section, 35...humid air exhaust section, 40...valve, 50...blower, 60...humidity detection section, 61...first humidity detection section, 62...second humidity detection section, 70...control section, 71...communication section, 72...processing section, 73...storage section, 74...acquisition section, 75...estimation section, 80...wall section, 90...space section, 100...long structure

Claims

1. a partition portion that divides the space portion of an elongated structure having a space portion extending in one direction therein into a plurality of cells in the one direction; a pipe provided across each of the cells divided by the partition portion, the pipe having a supply port for supplying dehumidified air to each of the cells; a dehumidification unit that supplies dehumidified air to the piping; a valve provided at each of the supply ports of the piping for adjusting the flow rate of the dehumidified air supplied to the cell; a blower that blows air from the cell to the adjacent cell; a humidity detector provided at a plurality of locations for each of the cells, the humidity detector detecting the humidity within the cell; a control unit that adjusts the operating state of the dehumidifying unit, the opening degree of the valve, and the air volume of the blower based on the detection result of the humidity detection unit; Equipped with The control unit acquires the detection results of the humidity detection units as input information, estimates the operation states of the dehumidification units and the opening degrees of the valves and the airflow rates of the blowers in response to the input information using a learning model that is machine-learned by associating the detection results of the humidity detection units with the operation states of the dehumidification units, the opening degrees of the valves, and the airflow rates of the blowers, and adjusts the operation states of the dehumidification units, the opening degrees of the valves, and the airflow rates of the blowers based on the estimation results. Corrosion prevention system for the interior of long structures.

2. When viewed in cross section along a plane perpendicular to the one direction, the cell includes an annular first portion along a periphery of the space portion and a second portion inside the first portion, The humidity detector is provided in the first portion and the second portion of each of the cells. The corrosion prevention system for the interior of a long structure according to claim 1.

3. The first portion faces a wall of the long structure that surrounds the space, and is a portion into which dehumidified air containing moisture from outside the space infiltrates through the wall. The corrosion prevention system for the interior of a long structure according to claim 2.

4. The second portion includes the supply port and is a portion to which the dehumidified air is directly supplied from the supply port. The corrosion prevention system for the interior of a long structure according to claim 2.

5. The plurality of cells are divided by the partitions so as to be in communication with each other in the one direction, The dehumidifying unit collects dehumidified air from the cells through the communication portion and the blower, dehumidifies the air, and supplies the dehumidified air to the piping. The corrosion prevention system for the interior of a long structure according to claim 2.

6. The blower is disposed in the second portion. The corrosion prevention system for the interior of a long structure according to claim 2.

7. The blower is disposed below the supply port when viewed from the one direction. The corrosion prevention system for the interior of a long structure according to claim 6.

8. a partition portion that divides the space portion of an elongated structure having a space portion extending in one direction therein into a plurality of cells in the one direction; a pipe provided across each of the cells divided by the partition portion, the pipe having a supply port for supplying dehumidified air to each of the cells; a dehumidification unit that supplies dehumidified air to the piping; a valve provided at each of the supply ports of the piping for adjusting the flow rate of the dehumidified air supplied to the cell; a blower that blows air from the cell to the adjacent cell; a humidity detection unit provided at a plurality of locations for each of the cells, for detecting humidity within the cells; A corrosion prevention method for the inside of a long structure, comprising: The detection result of the humidity detection unit is acquired as input information; The operating state of the dehumidifying unit, the opening degree of each of the valves, and the air volume of the blower are estimated based on a learning model that is machine-learned by associating the detection results of each of the humidity detecting units with the operating state of the dehumidifying unit, the opening degree of each of the valves, and the air volume of the blower, and the operating state of the dehumidifying unit, the opening degree of each of the valves, and the air volume of the blower are adjusted based on the estimation result. Corrosion prevention methods for the interior of long structures.

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