WO2021246119A1 - Corrosion inspection tool - Google Patents

Corrosion inspection tool Download PDF

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Publication number
WO2021246119A1
WO2021246119A1 PCT/JP2021/018007 JP2021018007W WO2021246119A1 WO 2021246119 A1 WO2021246119 A1 WO 2021246119A1 JP 2021018007 W JP2021018007 W JP 2021018007W WO 2021246119 A1 WO2021246119 A1 WO 2021246119A1
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WO
WIPO (PCT)
Prior art keywords
pipe
observation
corrosion
inspection instrument
corrosion inspection
Prior art date
Application number
PCT/JP2021/018007
Other languages
French (fr)
Japanese (ja)
Inventor
嘉明 稲付
正通 朝比奈
良則 礒本
Original Assignee
カワソーテクセル株式会社
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Publication date
Priority claimed from JP2020132128A external-priority patent/JP7495114B2/en
Application filed by カワソーテクセル株式会社 filed Critical カワソーテクセル株式会社
Publication of WO2021246119A1 publication Critical patent/WO2021246119A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/04—Corrosion probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the present invention relates to a corrosion inspection instrument for inspecting a corrosion state of a flow passage through which a heat medium formed inside a device such as a heat sink circulates.
  • the heat sink disclosed in Patent Document 1 includes a rectangular plate-shaped metal substrate having a thickness, and the substrate has a rectangular plate-shaped substrate main body and a rectangular plate-shaped substrate covering one surface of the substrate main body. It is equipped with a lid plate. Then, on one surface of the substrate body, a groove is formed so as to form a fold in a plan view and each end extends to the side surface of the substrate body, and the lid plate is welded to one surface of the substrate body by brazing or the like. By covering the open portion of the groove with a lid plate, a heat sink having a flow passage inside can be obtained.
  • the substrate body may be formed of an aluminum alloy material.
  • the flow passage is corroded, and eventually water leakage occurs from the corroded part. There is a risk that it will end up. Therefore, it is necessary to periodically inspect the inside of the substrate, but the heat sink as in Patent Document 1 has a problem that the substrate cannot be disassembled and the internal state cannot be observed because the substrate is integrated by brazing or the like. was there.
  • JP-A-2019-109012 Japanese Unexamined Patent Publication No. 2006-71464
  • Non-destructive inspection such as Patent Document 2 has a problem that not only the inspection takes time but also the cost increases. Further, there is a problem that the work is complicated because the inspection instrument must be brought into contact with the outer surface of the substrate and the substrate must be removed from the object to be cooled each time the inspection is performed.
  • the present invention has been made in view of such a point, and an object of the present invention is to easily corrode the corrosive state of the flow path through which the heat medium formed inside the device such as a heat sink is circulated. In addition, it is to be able to inspect efficiently.
  • the present invention connects an inspection pipe to a metal inspected object, and an observation member made of the same metal material as the inspected object is provided in the internal passage of the inspection pipe.
  • the feature is that it is attached so that it can be attached and detached.
  • the following measures were taken for corrosion inspection equipment that inspects the corrosion state of the fluid flow passage formed inside the metal object to be inspected.
  • one end is detachably connected to the end of the flow passage so that the fluid flows into the flow passage or the internal passage through which the fluid flows out from the flow passage is provided on the center line of the cylinder.
  • the inspection pipe is provided with an inspection pipe, and the inspection pipe is characterized in that an observation member made of the same metal material as the inspected object is detachably configured in the internal passage.
  • the observation member is an observation plate in the shape of a strip, and the observation plate can be attached to and detached from the internal passage in the inspection pipe. It is characterized in that a part is provided.
  • the inspection pipe in the second invention, includes a pipe body made of a transparent resin material so that the observation plate attached to the inside can be observed from the outside. It is a feature.
  • the plate attachment / detachment portion can be fitted into the inside of the piping body in a posture in which the central axis extends along the internal passage, and the observation plate is provided inside.
  • a cylinder that can be accommodated in a posture along the central axis is provided, and an observation window that communicates with the inside of the cylinder is formed at a position corresponding to the accommodated observation plate on the outer peripheral surface of the cylinder. It is characterized by that.
  • a metal joint connected to the inspected body is attached to one end of the pipe body, and the cylinder is made of the same metal material as the joint.
  • the end portion is in a position where it comes into contact with the above-mentioned joint, and the above-mentioned observation plate is formed by a fixing means formed of the same metal material as the above-mentioned joint. It is characterized in that it is fixed to the center of the cylinder.
  • the cross-sectional area inside the cylinder excluding the area of the observation plate attached to the cylinder is set to be the same as the cross-sectional area of the flow passage. It is characterized by being.
  • the observation member in the first invention, is a cylinder in which the cross-sectional shape of the in-pipe passage from one end to the other end matches the cross-sectional shape of a predetermined region of the fluid flow passage in the inspected object. It is an observation pipe having a shape, and is characterized in that the observation pipe can be inserted into the internal passage of the inspection pipe so that the internal passage of the pipe can be inserted along the internal passage.
  • the observation pipe is characterized by being composed of a first half-split body and a second half-split body having a concave cross section.
  • the heat medium circulates.
  • the flow passage provided inside the inspection body and the observation member located in the internal passage of the inspection pipe deteriorate in the same state. Therefore, by periodically taking out the observation member from the internal passage of the inspection pipe and observing the observation member, it is possible to accurately estimate the corrosion state inside the inspected object, and it is easy and inexpensive. Moreover, the internal state of the object to be inspected can be efficiently inspected.
  • the preparatory work for confirming the corrosion state inside the inspected object is only to take out the observation member from the inside of the inspection pipe connected to the inspected object, it is necessary to start from the object to be cooled or heated. There is no need to remove the object to be inspected each time it is inspected, and the time and effort required for inspection can be reduced.
  • the observed plate after confirmation can be returned to the same position as before the removal in the internal passage of the inspection pipe. .. Therefore, it is possible to accurately estimate the corrosion state inside the object to be inspected while performing regular inspections.
  • the state of the observation plate can be visually observed without stopping the operation of the object to be inspected. Therefore, a simple inspection such as a visual inspection for knowing the internal state of the object to be inspected can be easily and efficiently performed.
  • the heat medium occupies the internal passage while the observation plate is immersed in the heat medium. It will flow smoothly. Therefore, it is possible to inspect the corrosion state inside the inspected object without deteriorating the performance of the inspected object. Further, by visually observing the observation plate from the observation window, it is possible to know the corrosion state inside the inspected object without stopping the operation of the inspected object. As described above, it is possible to obtain a corrosion inspection instrument capable of performing a simple inspection such as a visual inspection without deteriorating the performance of the object to be inspected.
  • the portion of the corrosion inspection instrument connected to the object to be inspected to the fixed portion of the observation plate are made of the same metal material and are in contact with each other, and further, the observation plate is in contact with each other. Is located away from the connection point with the object to be inspected. Therefore, for example, even when the high-voltage device in which the leakage current is generated is brought into contact with the inspected object and the high-voltage device is cooled by the fluid flowing through the flow path of the inspected object, the observation plate is charged. Since the observation plate is no longer concentrated and the observation plate corrodes at the same speed as the inside of the inspected object, the inside of the inspected object can be inspected with high accuracy.
  • the flow state of the fluid flowing through the flow path of the inspected object, particularly the flow velocity, and the flow state of the fluid flowing inside the cylinder are the same or the same. Therefore, since the corrosion progress inside the inspected object and the corrosion progress of the observation plate are the same, the inside of the inspected object can be inspected more accurately.
  • the flow state of the fluid flowing in the predetermined region in the flow passage of the inspected object can be made the same as the flow state of the fluid flowing in the in-pipe passage of the observation pipe.
  • the corrosion progress and the corrosion progress on the inner surface of the observation pipe are the same. In this way, by reproducing the cross-sectional shape of the region in which the corrosion progress is to be observed inside the observation pipe inside the observation pipe, it is possible to accurately inspect the specific region inside the inspected object.
  • the observation pipe removed from the inspection pipe is in a half-split state, it is not necessary to look into the observation pipe to check the state of the inner surface of the observation pipe. Therefore, the operator can easily confirm the corroded state of the observation pipe.
  • FIG. 3 is a cross-sectional view taken along the line III-III of FIG. It is sectional drawing in the IV-IV line of FIG.
  • FIG. 2 is a diagram corresponding to FIG. 2 in which each component is disassembled.
  • FIG. 2 is a diagram corresponding to FIG. 2 according to the second embodiment.
  • It is an exploded sectional view of an observation pipe. 6 is a cross-sectional view taken along the line VIII-VIII of FIG.
  • FIG. 1 shows a water-cooled heat sink 10 (inspected body) to which the corrosion inspection instrument 1 according to the first embodiment of the present invention is attached.
  • the heat sink 10 is for cooling equipment such as an IGBT (Insulated Gate Bipolar Transistor) and an IEGT (Injection Acceleration Insulated Gate Transistor), and has a thick rectangular plate-shaped aluminum alloy substrate 2. It is equipped with.
  • IGBT Insulated Gate Bipolar Transistor
  • IEGT Injection Acceleration Insulated Gate Transistor
  • the substrate 2 includes a rectangular plate-shaped substrate main body 3 and a rectangular plate-shaped lid plate 4 that covers the surface (one side) side of the substrate main body 3, and the lid plate 4 is the substrate main body 3.
  • the shape corresponds to the above, and the thickness thereof is set to be smaller than the thickness of the substrate main body 3.
  • the substrate main body 3 is formed with a groove portion 3a that is open to the surface side of the substrate main body 3 and has a pleated shape in a plan view, and each end portion of the groove portion 3a is one of four side surfaces of the substrate main body 3. It extends to.
  • the substrate 2 is assembled by welding a lid plate 4 to the surface side of the substrate main body 3 by brazing, and by covering the open portion of the groove 3a with the lid plate 4, the inside of the substrate 2 is formed.
  • a flow passage 2a having a cross-sectional area S1 for circulating a liquid refrigerant is formed in the space.
  • a resin inflow pipe 5a for flowing a liquid refrigerant into the flow passage 2a is detachably connected to one end of the flow passage 2a.
  • a resin outflow pipe 5b for flowing out the liquid refrigerant from the flow passage 2a is detachably connected to the other end of the flow passage 2a via the corrosion inspection instrument 1.
  • the corrosion inspection instrument 1 includes an inspection pipe 6 having an internal passage 6a on which the liquid refrigerant flows out from the flow passage 2a on the cylinder center line C1.
  • the inspection pipe 6 is detachably connected to a flexible cylindrical pipe body 7 made of a transparent fluororesin material and one end of the pipe body 7 to the end of the flow passage 2a in the substrate 2.
  • a first pipe joint 8 made of a stainless steel material and a second pipe joint 9 made of a stainless steel material that detachably connects the other end of the pipe body 7 and the outflow pipe 5b are provided.
  • An inspection unit 11 for inspecting the corrosion state of the flow passage 2a in the substrate 2 is detachably inserted inside the piping main body 7.
  • the inspection unit 11 is a cylindrical body made of a stainless material whose outer diameter corresponds to the inner diameter of the pipe body 7 and which is the same metal material as the first and second pipe joints 8 and 9.
  • a strip-shaped observation plate 13 which is formed of an aluminum alloy material which is the same metal material as the substrate 2 and whose width dimension is set smaller than the inner diameter of the cylindrical body 12 is provided. There is.
  • the cylindrical body 12 can be fitted into the inside of the pipe body 7 in a posture in which the central axis extends in line with the cylinder center line C1 of the internal passage 6a, and each end of the cylindrical body 12 is fitted into the pipe body 7.
  • the portions are in contact with the first pipe joint 8 and the second pipe joint 9, respectively.
  • a pair of mounting holes 14 formed so as to penetrate the inside of the cylindrical body 12 and at intervals D1 in the direction of the cylinder center line C1 are symmetrical with the cylinder center line C1 in between.
  • Two sets are formed, and each mounting hole 14 is capable of inserting a fixing pin 15 (fixing means) made of a stainless steel material which is the same metal material as the cylindrical body 12.
  • fixing pin 15 fixing means
  • one pair of mounting holes 14 formed at intervals D1 in the cylinder center line C1 direction are referred to as mounting holes 14A, and the other pair of mounting holes 14 are respectively for mounting. It will be called hole 14B.
  • An observation window 12a is formed.
  • the observation plate 13 can be accommodated inside the cylindrical body 12 in a posture along its central axis.
  • a pair of insertion holes 13a penetrating in the plate thickness direction are formed in the observation plate 13 with an interval D1 in the longitudinal direction, and each insertion hole 13a is capable of inserting a fixing pin 15.
  • the insertion hole 13a of the observation plate 13 is between the mounting holes 14A and the mounting holes 14B located symmetrically with respect to the cylinder center line C1.
  • the observation plate 13 can be fixed to the cylindrical body 12 by inserting the fixing pin 15 in the order of the mounting hole 14A, the insertion hole 13a, and the mounting hole 14B. ..
  • the plate attachment / detachment portion 16 of the present invention is composed of the cylinder 12 and the pair of fixing pins 15, and the observation plate 13 can be attached / detached to / from the cylinder 12 by inserting / removing both fixing pins 15. It has become.
  • the cross-sectional area S2 inside the cylindrical body 12 excluding the region of the observation plate 13 attached to the cylindrical body 12 is set to be substantially the same as the cross-sectional area S1 of the flow passage 2a.
  • each observation window 12a corresponds to the observation plate 13 attached to the inside of the cylindrical body 12. Since the position is set so that the observation plate 13 can be observed from the outside of the piping main body 7.
  • the inflow pipe 5a is connected to the end of the flow passage 2a on the side where the liquid refrigerant flows in, while the end of the flow passage 2a on the side where the liquid refrigerant flows out.
  • the liquid refrigerant is circulated in the flow passage 2a.
  • the observation plate 13 attached to the inside of the cylindrical body 12 is always immersed in the liquid refrigerant passing through the internal passage 6a.
  • the worker visually checks the piping body 7 of the corrosion inspection tool 1 at predetermined intervals, for example. Then, since the pipe body 7 is made of a transparent resin material, the cylindrical body 12 housed inside the pipe body 7 can be seen. Since an observation window 12a for observing the inside of the cylinder 12 is formed on the outer peripheral surface of the cylinder 12, the operator can attach the heat sink 10 to the inside of the cylinder 12 without stopping the operation of the heat sink 10. The state of the observation plate 13 can be visually observed.
  • the inspection pipe 6 of the corrosion inspection instrument 1 of the present invention is continuous with the heat sink 10, and the observation plate 13 located in the internal passage 6a of the inspection pipe 6 and the substrate 2 of the heat sink 10 are the same aluminum alloy.
  • the corrosion inspection instrument 1 of the present invention can easily and efficiently carry out a simple inspection such as a visual inspection for knowing the internal state of the heat sink 10.
  • the corrosion inspection instrument 1 When the operator carries out a detailed inspection of the corrosion state inside the heat sink 10, for example, observation with an electron microscope or component analysis, the operator stops the operation of the heat sink 10 and puts a liquid refrigerant in the flow passage 2a of the substrate 2. After preventing circulation, as shown in FIG. 5, the corrosion inspection instrument 1 is disassembled, the observation plate 13 is taken out from the inside of the cylindrical body 12, and the corrosion state is inspected. As described above, in the corrosion inspection instrument 1 of the present invention, for example, the observation plate 13 is periodically taken out from the internal passage 6a of the inspection pipe 6 and the observation plate 13 is observed to check the corrosion state inside the heat sink 10. Since it can be estimated accurately, the internal state of the heat sink 10 can be inspected easily and efficiently at no cost.
  • the heat sink 10 is cooled. There is no need to remove the heat sink every time the inspection is performed, and the labor required for the inspection can be reduced.
  • the corrosion inspection instrument 1 of the first embodiment of the present invention can carry out both a simple inspection and a detailed inspection inside the heat sink 10 without disassembling the heat sink 10.
  • observation plate 13 can be attached to and detached from the internal passage 6a of the inspection pipe 6 by the plate attachment / detachment portion 16, the observation plate 13 is removed from the internal passage 6a of the inspection pipe 6 to check the corrosion state, and then the confirmation is performed.
  • the observation plate 13 can be returned to the same position as before the removal in the internal passage 6a of the inspection pipe 6. Therefore, it is possible to accurately estimate the corrosion state inside the heat sink 10 while performing periodic inspections.
  • the observation plate 13 is housed inside the cylindrical body 12 inserted inside the pipe body 7 so as to extend along the central axis thereof, the pipe body 13 is housed in the cross section of the internal passage 6a.
  • the area occupied by the cylindrical body 12 and the observation plate 13 attached to the inside of the 7 is narrowed. Therefore, since the liquid refrigerant smoothly flows through the internal passage 6a while the observation plate 13 is immersed in the liquid refrigerant, the corrosion state inside the heat sink 10 is inspected without deteriorating the performance of the heat sink 10. be able to.
  • connection portion with the heat sink 10 in the corrosion inspection instrument 1 to the fixing portion of the observation plate 13 are made of the same metal material.
  • the observation plates 13 are in contact with each other, and the observation plate 13 is located away from the first pipe joint 8 which is the connection point with the heat sink 10. Therefore, for example, even in the case where the heat sink 10 is brought into contact with a high-voltage device such as IEGT where a leakage current is generated and the high-voltage device is cooled by the liquid refrigerant flowing through the flow passage 2a of the heat sink 10, it is for observation. Since the electric charge does not concentrate on the plate 13 and the observation plate 13 corrodes at the same speed as the inside of the heat sink 10, the inside of the heat sink 10 can be inspected with high accuracy.
  • IEGT high-voltage device
  • the cross-sectional area S2 inside the cylindrical body 12 excluding the region of the observation plate 13 attached to the cylindrical body 12 is set to be substantially the same as the cross-sectional area S1 of the flow passage 2a, the flow passage 2a of the heat sink 10 is set.
  • the flow state of the fluid flowing through the cylinder, particularly the flow velocity, is the same as or equal to the flow state of the liquid refrigerant flowing inside the cylindrical body 12. Therefore, since the corrosion progress inside the heat sink 10 and the corrosion progress of the observation plate 13 are substantially the same, the inside of the heat sink 10 can be inspected with higher accuracy.
  • the cylindrical body 12 and the fixing pin 15 are formed of a stainless steel material which is a metal material, but the present invention is not limited to this, and the cylinder body 12 and the fixing pin 15 are formed of, for example, a resin material which is a non-metal material. It may be a thing. If leakage current does not occur from the cooled body cooled by the heat sink 10, the cylindrical body 12 and the fixing pin 15 can be formed of a resin material, and the fixing position of the observation plate 13 is a cylinder. It is not limited to the inside of the body 12.
  • the observation plate 13 is attached to and detached from the inside of the piping main body 7 by using the cylindrical body 12, but the observation plate 13 is attached to the piping main body 7 by other means. It may be attached to and detached from the inside of the.
  • two observation windows 12a are formed on the outer peripheral surface of the cylindrical body 12, but only one observation window 12a may be formed, or three or more observation windows 12a may be formed. It may have been done.
  • Embodiment 2 of the invention >> 6 to 8 show the corrosion inspection instrument 1 of the second embodiment of the present invention.
  • This embodiment 2 is different from the first embodiment in that the observation pipe 17 (observation member) having a cylindrical shape is detachably fitted inside the piping main body 7 instead of the inspection unit 11. Since it is the same as that of the first embodiment, the same parts as those of the first embodiment are designated by the same reference numerals, and only other different parts will be described.
  • the observation pipe 17 is for inspecting the corrosion state of the portion (X1 portion in FIG. 1) to which the first pipe joint 8 is connected in the flow passage 2a, and is formed of an aluminum alloy material which is the same metal material as the substrate 2. Has been done.
  • the observation pipe 17 is composed of a first half-split body 17a and a second half-split body 17b having a concave cross section.
  • the cross-sectional shape Z of the in-pipe passage extending from one end to the other end of the observation pipe 17 has a shape that matches the cross-sectional shape of the portion of the flow passage 2a to which the first pipe joint 8 is connected.
  • the cross-sectional shape Z1 of one side half of the pipe passage of the observation pipe 17 has a rectangular shape whose central portion coincides with the pipe center line, while the cross-sectional shape Z2 of the other side half is eccentric from the pipe center line. It has a circular shape.
  • observation pipe 17 removed from the inspection pipe 6 is in a half-split state between the first half-split body 17a and the second half-split body 17b, observation is performed to confirm the state of the inner surface of the observation pipe 17. There is no need to look into the pipe 17. Therefore, the operator can easily confirm the corroded state of the observation pipe 17.
  • the cross-sectional shape Z of the in-pipe passage of the observation pipe 17 matches the cross-sectional shape of the portion to which the first pipe joint 8 is connected in the flow passage 2a.
  • the corrosion state may be matched to the cross-sectional shape of a predetermined region to be observed.
  • the observation pipe 17 has a half-split structure, but it is not essential to have a half-split structure.
  • the piping main body 7 is made of a transparent resin material, but it may not be transparent and may be made of another material.
  • the corrosion inspection instrument 1 inspects the corrosion state inside the substrate 2 made of the aluminum alloy material, but the corrosion inspection instrument 1 is formed of other materials. The corrosion state inside the substrate 2 can also be inspected.
  • the corrosion inspection instrument 1 of the first and second embodiments of the present invention is connected to the end of the flow passage 2a of the substrate 2 on the outflow side of the liquid refrigerant, but the end of the flow passage 2a on the inflow side of the liquid refrigerant. Inspection can be carried out even if it is connected to the unit.
  • the corrosion inspection instrument 1 of the present invention was applied to the inspection of the corrosion state inside the heat sink 10, but the corrosion state inside other devices that circulate a fluid such as a heat medium inside regardless of liquid or gas. It can also be applied for inspection. It was
  • the present invention is suitable for a corrosion inspection instrument for inspecting a corrosion state of a flow passage through which a heat medium formed inside a device such as a heat sink circulates.

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Abstract

With this invention, the state of corrosion of a flow path that is formed inside a device, such as a heat sink, and that allows a heat transfer medium to pass therethrough can be inspected efficiently and easily with little cost. This corrosion inspection tool (1) inspects the state of corrosion of a flow path (2a) formed inside an aluminum alloy-made heat sink (10). An inspection pipe (6) includes an inner passage (6a), an end of which is detachably connected to an end part of the flow path (2a) so as to let a liquid refrigerant flow out from the flow path (2a). The inspection pipe (6) is provided with a plate attachment/detachment part (16) which makes it possible to attach/detach, to/from the inner passage (6a), an observation plate (13) formed from the same aluminum alloy material as the heat sink (10).

Description

腐食検査器具Corrosion inspection equipment
　本発明は、例えば、ヒートシンクの如き機器の内部に形成された熱媒体が循環する流通路の腐食状態を検査する腐食検査器具に関する。 The present invention relates to a corrosion inspection instrument for inspecting a corrosion state of a flow passage through which a heat medium formed inside a device such as a heat sink circulates.
　従来より、内部に形成された流通路に液体冷媒を循環させる水冷式のヒートシンクが一般的に知られている。例えば、特許文献１に開示されているヒートシンクは、厚みを有する矩形板状の金属製基板を備え、該基板は、矩形板状の基板本体と、該基板本体の一方の面を覆う矩形板状の蓋板とを備えている。そして、基板本体の一方の面には、平面視でひだ状をなすとともに各端部が基板本体の側面にまで延びる溝部が形成され、基板本体の一方の面にろう付け等により蓋板を溶着させて溝部の開放部分を蓋板で覆うことにより、内部に流通路が設けられたヒートシンクを得るようにしている。 Conventionally, a water-cooled heat sink that circulates a liquid refrigerant in a flow passage formed inside is generally known. For example, the heat sink disclosed in Patent Document 1 includes a rectangular plate-shaped metal substrate having a thickness, and the substrate has a rectangular plate-shaped substrate main body and a rectangular plate-shaped substrate covering one surface of the substrate main body. It is equipped with a lid plate. Then, on one surface of the substrate body, a groove is formed so as to form a fold in a plan view and each end extends to the side surface of the substrate body, and the lid plate is welded to one surface of the substrate body by brazing or the like. By covering the open portion of the groove with a lid plate, a heat sink having a flow passage inside can be obtained.
　ところで、特許文献１の如きヒートシンクを安価で、且つ、軽量なものにするために、基板本体をアルミニウム合金材で形成する場合がある。この場合、工場等の環境下において使用する際に、基板の流通路に工業用水を液体冷媒として長きにわたって循環させると、流通路が腐食してしまい、ひいては、腐食部分から水漏れが発生してしまうおそれがある。したがって、基板内部を周期的に検査する必要があるが、特許文献１の如きヒートシンクは、基板がろう付け等により一体になっているので、分解して内部の状態を観察することができないという問題があった。 By the way, in order to make the heat sink as in Patent Document 1 inexpensive and lightweight, the substrate body may be formed of an aluminum alloy material. In this case, when industrial water is circulated as a liquid refrigerant for a long time in the flow passage of the substrate when used in an environment such as a factory, the flow passage is corroded, and eventually water leakage occurs from the corroded part. There is a risk that it will end up. Therefore, it is necessary to periodically inspect the inside of the substrate, but the heat sink as in Patent Document 1 has a problem that the substrate cannot be disassembled and the internal state cannot be observed because the substrate is integrated by brazing or the like. was there.
　これに対応するために、例えば、特許文献２の如き非破壊検査方法により、基板内部の状態を当該基板の外側から検査することが考えられる。 In order to deal with this, for example, it is conceivable to inspect the state inside the substrate from the outside of the substrate by a non-destructive inspection method such as Patent Document 2.
特開２０１９－１０９０１２号公報JP-A-2019-109012 特開２００６－７１４６４号公報Japanese Unexamined Patent Publication No. 2006-71464
　しかし、特許文献２の如き非破壊検査は、検査に時間がかかるだけでなく、費用が嵩むという問題がある。また、検査器具を基板の外面に接触させなければならず、検査するたびに冷却する対象物から基板を取り外す必要があるといったように、作業が煩雑であるという問題もある。 However, non-destructive inspection such as Patent Document 2 has a problem that not only the inspection takes time but also the cost increases. Further, there is a problem that the work is complicated because the inspection instrument must be brought into contact with the outer surface of the substrate and the substrate must be removed from the object to be cooled each time the inspection is performed.
　本発明は、斯かる点に鑑みてなされたものであり、その目的とするところは、ヒートシンクの如き機器の内部に形成された熱媒体を流通させる流通路の腐食状態を費用をかけずに簡単に、且つ、効率的に検査可能にすることにある。 The present invention has been made in view of such a point, and an object of the present invention is to easily corrode the corrosive state of the flow path through which the heat medium formed inside the device such as a heat sink is circulated. In addition, it is to be able to inspect efficiently.
　上記の目的を達成するために、本発明は、金属製被検査体に検査用配管を接続するとともに、当該検査用配管の内部通路に被検査体と同じ金属材で形成された観察用部材を着脱可能に取り付けるようにしたことを特徴とする。 In order to achieve the above object, the present invention connects an inspection pipe to a metal inspected object, and an observation member made of the same metal material as the inspected object is provided in the internal passage of the inspection pipe. The feature is that it is attached so that it can be attached and detached.
　具体的には、金属製被検査体の内部に形成された流体流通路の腐食状態を検査する腐食検査器具を対象とし、次のような対策を講じた。 Specifically, the following measures were taken for corrosion inspection equipment that inspects the corrosion state of the fluid flow passage formed inside the metal object to be inspected.
　すなわち、第１の発明では、一端が上記流通路の端部に着脱可能に接続され、上記流通路に流体を流入させるか、或いは、上記流通路から流体を流出させる内部通路を筒中心線上に有する検査用配管を備え、該検査用配管は、上記内部通路に上記被検査体と同じ金属材で形成された観察用部材を着脱可能に構成されていることを特徴とする。 That is, in the first invention, one end is detachably connected to the end of the flow passage so that the fluid flows into the flow passage or the internal passage through which the fluid flows out from the flow passage is provided on the center line of the cylinder. The inspection pipe is provided with an inspection pipe, and the inspection pipe is characterized in that an observation member made of the same metal material as the inspected object is detachably configured in the internal passage.
　第２の発明では、第１の発明において、上記観察用部材は、帯板状をなす観察用プレートであり、上記検査用配管には、上記観察用プレートを上記内部通路に着脱可能なプレート着脱部が設けられていることを特徴とする。 In the second invention, in the first invention, the observation member is an observation plate in the shape of a strip, and the observation plate can be attached to and detached from the internal passage in the inspection pipe. It is characterized in that a part is provided.
　第３の発明では、第２の発明において、上記検査用配管は、内方に取り付けられた上記観察用プレートを外側から観察可能に透明な樹脂材で形成された配管本体を備えていることを特徴とする。 In the third invention, in the second invention, the inspection pipe includes a pipe body made of a transparent resin material so that the observation plate attached to the inside can be observed from the outside. It is a feature.
　第４の発明では、第３の発明において、上記プレート着脱部は、中心軸が上記内部通路に沿って延びる姿勢で上記配管本体の内部に嵌挿可能で、且つ、内部に上記観察用プレートを上記中心軸に沿う姿勢で収容可能な筒体を備え、該筒体の外周面における収容した上記観察用プレートに対応する位置には、上記筒体内部に連通する観察用窓が形成されていることを特徴とする。 In the fourth aspect of the invention, in the third aspect, the plate attachment / detachment portion can be fitted into the inside of the piping body in a posture in which the central axis extends along the internal passage, and the observation plate is provided inside. A cylinder that can be accommodated in a posture along the central axis is provided, and an observation window that communicates with the inside of the cylinder is formed at a position corresponding to the accommodated observation plate on the outer peripheral surface of the cylinder. It is characterized by that.
　第５の発明では、第４の発明において、上記配管本体の一方の端部には、上記被検査体に接続される金属製の継手が取り付けられ、上記筒体は、上記継手と同じ金属材で形成されるとともに、上記配管本体に嵌挿された状態において、端部が上記継手に接触する位置になっており、上記観察用プレートは、上記継手と同じ金属材で形成された固定手段により上記筒体の中央に固定されることを特徴とする。 In a fifth aspect of the invention, in the fourth aspect, a metal joint connected to the inspected body is attached to one end of the pipe body, and the cylinder is made of the same metal material as the joint. In addition to being formed in the above-mentioned pipe body, the end portion is in a position where it comes into contact with the above-mentioned joint, and the above-mentioned observation plate is formed by a fixing means formed of the same metal material as the above-mentioned joint. It is characterized in that it is fixed to the center of the cylinder.
　第６の発明では、第４又は第５の発明において、上記筒体に取り付けられた上記観察用プレートの領域を除く上記筒体内部の断面積は、上記流通路の断面積と同じに設定されていることを特徴とする。 In the sixth invention, in the fourth or fifth invention, the cross-sectional area inside the cylinder excluding the area of the observation plate attached to the cylinder is set to be the same as the cross-sectional area of the flow passage. It is characterized by being.
　第７の発明では、第１の発明において、上記観察用部材は、一端から他端に亘って管内通路の断面形状を上記被検査体における流体流通路の所定領域の断面形状に一致させた円筒状をなす観察用パイプであり、上記検査用配管の内部通路に上記観察用パイプを上記管内通路が上記内部通路に沿うように嵌挿可能に構成されていることを特徴とする。 In the seventh invention, in the first invention, the observation member is a cylinder in which the cross-sectional shape of the in-pipe passage from one end to the other end matches the cross-sectional shape of a predetermined region of the fluid flow passage in the inspected object. It is an observation pipe having a shape, and is characterized in that the observation pipe can be inserted into the internal passage of the inspection pipe so that the internal passage of the pipe can be inserted along the internal passage.
　第８の発明では、第７の発明において、上記観察用パイプは、断面凹状をなす第１半割体及び第２半割体からなることを特徴とする。 In the eighth invention, in the seventh invention, the observation pipe is characterized by being composed of a first half-split body and a second half-split body having a concave cross section.
　第１の発明では、被検査体と検査用配管とが連続するとともに被検査体と検査用配管の内部通路に位置する観察用部材とが同じ金属材から形成されているので、熱媒体が循環する被検査体の内部に設けられた流通路と検査用配管の内部通路に位置する観察用部材とが同じ状態で劣化していくようになる。したがって、検査用配管の内部通路から観察用部材を周期的に取り出して当該観察用部材を観察することで被検査体内部の腐食状態を精度良く推定可能になり、費用をかけずに簡単に、且つ、効率的に被検査体の内部状態を検査することができる。また、被検査体の内部の腐食状態を確認する際の準備作業は、被検査体に接続された検査用配管の内部から観察用部材を取り出すだけであるので、冷却又は加温する対象物から被検査体を検査のたびに取り外すといった作業の必要が無く、検査にかかる手間を少なくすることができる。 In the first invention, since the inspected body and the inspection pipe are continuous and the observation member located in the internal passage of the inspected body and the inspection pipe is formed of the same metal material, the heat medium circulates. The flow passage provided inside the inspection body and the observation member located in the internal passage of the inspection pipe deteriorate in the same state. Therefore, by periodically taking out the observation member from the internal passage of the inspection pipe and observing the observation member, it is possible to accurately estimate the corrosion state inside the inspected object, and it is easy and inexpensive. Moreover, the internal state of the object to be inspected can be efficiently inspected. In addition, since the preparatory work for confirming the corrosion state inside the inspected object is only to take out the observation member from the inside of the inspection pipe connected to the inspected object, it is necessary to start from the object to be cooled or heated. There is no need to remove the object to be inspected each time it is inspected, and the time and effort required for inspection can be reduced.
　第２の発明では、検査用配管の内部通路から観察用プレートを取り外して腐食状態を確認した後、確認後の観察用プレートを検査用配管の内部通路における取り外す前と同じ位置に戻せるようになる。したがって、定期的な検査を行いながら被検査体内部の腐食状態を精度良く推定することができる。 In the second invention, after the observation plate is removed from the internal passage of the inspection pipe and the corrosion state is confirmed, the observed plate after confirmation can be returned to the same position as before the removal in the internal passage of the inspection pipe. .. Therefore, it is possible to accurately estimate the corrosion state inside the object to be inspected while performing regular inspections.
　第３の発明では、被検査体の稼働を止めることなく観察用プレートの状態を目視で観察できるようになる。したがって、被検査体の内部の状態を知るための目視検査のような簡易的な検査を、簡単に、且つ、効率良く実施することができる。 In the third invention, the state of the observation plate can be visually observed without stopping the operation of the object to be inspected. Therefore, a simple inspection such as a visual inspection for knowing the internal state of the object to be inspected can be easily and efficiently performed.
　第４の発明では、内部通路の断面において配管本体の内部に取り付ける筒体及び観察用プレートの占める領域が狭くなるので、観察用プレートが熱媒体に浸された状態で当該熱媒体が内部通路をスムーズに流れるようになる。したがって、被検査体の性能を低下させることなく当該被検査体内部の腐食状態を検査することができる。また、観察用プレートを観察用窓から目視で観察することで被検査体の稼働を止めることなく被検査体内部の腐食状態を知ることができる。このように、被検査体の性能を低下させることなく目視検査のような簡易的な検査も実施可能な腐食検査器具にすることができる。 In the fourth invention, since the area occupied by the cylinder and the observation plate attached to the inside of the pipe body is narrowed in the cross section of the internal passage, the heat medium occupies the internal passage while the observation plate is immersed in the heat medium. It will flow smoothly. Therefore, it is possible to inspect the corrosion state inside the inspected object without deteriorating the performance of the inspected object. Further, by visually observing the observation plate from the observation window, it is possible to know the corrosion state inside the inspected object without stopping the operation of the inspected object. As described above, it is possible to obtain a corrosion inspection instrument capable of performing a simple inspection such as a visual inspection without deteriorating the performance of the object to be inspected.
　第５の発明では、腐食検査器具における被検査体との接続部分から観察用プレートの固定部分までが同じ金属材で形成されたものになるとともに互いに接触した状態になり、さらには、観察用プレートが被検査体との接続箇所から離れた位置になる。したがって、例えば、漏れ電流が発生する高電圧機器に被検査体を接触させて当該被検査体の流通路を流れる流体によって高電圧機器を冷却するような場合であっても観察用プレートに電荷が集中しなくなり、観察用プレートが被検査体内部と同じ速さで腐食していくようになるので、被検査体内部の検査を精度良く実施することができる。 In the fifth aspect of the invention, the portion of the corrosion inspection instrument connected to the object to be inspected to the fixed portion of the observation plate are made of the same metal material and are in contact with each other, and further, the observation plate is in contact with each other. Is located away from the connection point with the object to be inspected. Therefore, for example, even when the high-voltage device in which the leakage current is generated is brought into contact with the inspected object and the high-voltage device is cooled by the fluid flowing through the flow path of the inspected object, the observation plate is charged. Since the observation plate is no longer concentrated and the observation plate corrodes at the same speed as the inside of the inspected object, the inside of the inspected object can be inspected with high accuracy.
　第６の発明では、被検査体の流通路を流れる流体の流動状態、特に流速と、筒体内部を流れる流体の流動状態とが同じか、或いは、同等になる。したがって、被検査体内部の腐食進度と観察用プレートの腐食進度とが同じになるので、被検査体内部の検査をさらに精度良く行うことができる。 In the sixth invention, the flow state of the fluid flowing through the flow path of the inspected object, particularly the flow velocity, and the flow state of the fluid flowing inside the cylinder are the same or the same. Therefore, since the corrosion progress inside the inspected object and the corrosion progress of the observation plate are the same, the inside of the inspected object can be inspected more accurately.
　第７の発明では、被検査体の流通路における所定領域を流れる流体の流動状態と観察用パイプの管内通路を流れる流体の流動状態とを同じ状態にできるので、被検査体内部の所定領域の腐食進度と観察用パイプの内面の腐食進度とが同じになる。このように、被検査体内部において腐食進度を観察したい領域の断面形状を観察用パイプの内部に再現しておくことで、被検査体内部の特定領域を精度良く検査することができる。 In the seventh invention, the flow state of the fluid flowing in the predetermined region in the flow passage of the inspected object can be made the same as the flow state of the fluid flowing in the in-pipe passage of the observation pipe. The corrosion progress and the corrosion progress on the inner surface of the observation pipe are the same. In this way, by reproducing the cross-sectional shape of the region in which the corrosion progress is to be observed inside the observation pipe inside the observation pipe, it is possible to accurately inspect the specific region inside the inspected object.
　第８の発明では、検査用配管から取り外した観察用パイプが半割れ状態になるので、観察用パイプの内面の状態を確認するために観察用パイプを覗き込む必要が無くなる。したがって、作業者は観察用パイプの腐食状態を簡単に確認することができる。 In the eighth invention, since the observation pipe removed from the inspection pipe is in a half-split state, it is not necessary to look into the observation pipe to check the state of the inner surface of the observation pipe. Therefore, the operator can easily confirm the corroded state of the observation pipe.
本発明の実施形態に１係る腐食検査器具が取り付けられた水冷式ヒートシンクを示す斜視図である。It is a perspective view which shows the water-cooled heat sink to which the corrosion inspection instrument which concerns on 1st Embodiment of this invention is attached. 本発明の実施形態１に係る腐食検査器具の部分断面図である。It is a partial cross-sectional view of the corrosion inspection instrument which concerns on Embodiment 1 of this invention. 図２のIII－III線における断面図である。FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 図２のIV－IV線における断面図である。It is sectional drawing in the IV-IV line of FIG. 各部品を分解した図２相当図である。FIG. 2 is a diagram corresponding to FIG. 2 in which each component is disassembled. 実施形態２に係る図２相当図である。FIG. 2 is a diagram corresponding to FIG. 2 according to the second embodiment. 観察用パイプの分解断面図である。It is an exploded sectional view of an observation pipe. 図６のVIII－VIII線における断面図である。6 is a cross-sectional view taken along the line VIII-VIII of FIG.
　以下、本発明の実施形態を図面に基づいて詳細に説明する。尚、以下の好ましい実施形態の説明は、本質的に例示に過ぎない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example.
　《発明の実施形態１》
　図１は、本発明の実施形態１に係る腐食検査器具１が取り付けられた水冷式ヒートシンク１０（被検査体）を示す。該ヒートシンク１０は、例えば、ＩＧＢＴ（絶縁ゲート型バイポーラトランジスタ）やＩＥＧＴ（注入促進型絶縁ゲートトランジスタ）のような機器を冷却するためのものであり、厚みを有する矩形板状のアルミニウム合金製基板２を備えている。 << Embodiment 1 of the invention >>
FIG. 1 shows a water-cooled heat sink 10 (inspected body) to which the corrosion inspection instrument 1 according to the first embodiment of the present invention is attached. The heat sink 10 is for cooling equipment such as an IGBT (Insulated Gate Bipolar Transistor) and an IEGT (Injection Acceleration Insulated Gate Transistor), and has a thick rectangular plate-shaped aluminum alloy substrate 2. It is equipped with.
　該基板２は、矩形板状をなす基板本体３と、該基板本体３の表面（一方の面）側を覆う矩形板状をなす蓋板４とを備え、該蓋板４は、基板本体３に対応する形状であるとともに、その厚みが基板本体３の厚みより小さく設定されている。 The substrate 2 includes a rectangular plate-shaped substrate main body 3 and a rectangular plate-shaped lid plate 4 that covers the surface (one side) side of the substrate main body 3, and the lid plate 4 is the substrate main body 3. The shape corresponds to the above, and the thickness thereof is set to be smaller than the thickness of the substrate main body 3.
　基板本体３には、当該基板本体３の表面側に開放する平面視でひだ状をなす溝部３ａが形成され、該溝部３ａは、各端部が基板本体３の４つの側面のうちの１つにまで延びている。 The substrate main body 3 is formed with a groove portion 3a that is open to the surface side of the substrate main body 3 and has a pleated shape in a plan view, and each end portion of the groove portion 3a is one of four side surfaces of the substrate main body 3. It extends to.
　そして、基板２は、基板本体３の表面側に蓋板４をろう付けで溶着させることにより組み立てられるようになっていて、溝部３ａの開放部分を蓋板４で覆うことにより、基板２の内部に液体冷媒を流通させる断面積Ｓ１の流通路２ａが形成されるようになっている。 The substrate 2 is assembled by welding a lid plate 4 to the surface side of the substrate main body 3 by brazing, and by covering the open portion of the groove 3a with the lid plate 4, the inside of the substrate 2 is formed. A flow passage 2a having a cross-sectional area S1 for circulating a liquid refrigerant is formed in the space.
　流通路２ａの一方の端部には、当該流通路２ａに液体冷媒を流入させる樹脂製の流入管５ａが着脱可能に接続されている。 A resin inflow pipe 5a for flowing a liquid refrigerant into the flow passage 2a is detachably connected to one end of the flow passage 2a.
　一方、流通路２ａの他方の端部には、当該流通路２ａから液体冷媒を流出させる樹脂製の流出管５ｂが腐食検査器具１を介して着脱可能に接続されている。 On the other hand, a resin outflow pipe 5b for flowing out the liquid refrigerant from the flow passage 2a is detachably connected to the other end of the flow passage 2a via the corrosion inspection instrument 1.
　腐食検査器具１は、図２に示すように、流通路２ａから液体冷媒を流出させる内部通路６ａを筒中心線Ｃ１上に有する検査用配管６を備えている。 As shown in FIG. 2, the corrosion inspection instrument 1 includes an inspection pipe 6 having an internal passage 6a on which the liquid refrigerant flows out from the flow passage 2a on the cylinder center line C1.
　該検査用配管６は、透明なフッ素樹脂材で形成された可撓性を有する円筒状の配管本体７と、該配管本体７の一端を基板２における流通路２ａの端部に着脱可能に接続するステンレス材からなる第１配管継手８と、配管本体７の他端と流出管５ｂとを着脱可能に接続するステンレス材からなる第２配管継手９とを備えている。 The inspection pipe 6 is detachably connected to a flexible cylindrical pipe body 7 made of a transparent fluororesin material and one end of the pipe body 7 to the end of the flow passage 2a in the substrate 2. A first pipe joint 8 made of a stainless steel material and a second pipe joint 9 made of a stainless steel material that detachably connects the other end of the pipe body 7 and the outflow pipe 5b are provided.
　配管本体７の内部には、基板２における流通路２ａの腐食状態を検査する検査ユニット１１が着脱可能に嵌挿されている。 An inspection unit 11 for inspecting the corrosion state of the flow passage 2a in the substrate 2 is detachably inserted inside the piping main body 7.
　該検査ユニット１１は、図２乃至図５に示すように、外径が配管本体７の内径に対応するとともに第１及び第２配管継手８，９と同じ金属材であるステンレス材からなる円筒体１２と、基板２と同じ金属材であるアルミニウム合金材で形成されるとともに幅寸法が円筒体１２の内径より小さく設定された帯板状をなす観察用プレート１３（観察用部材）とを備えている。 As shown in FIGS. 2 to 5, the inspection unit 11 is a cylindrical body made of a stainless material whose outer diameter corresponds to the inner diameter of the pipe body 7 and which is the same metal material as the first and second pipe joints 8 and 9. A strip-shaped observation plate 13 (observation member) which is formed of an aluminum alloy material which is the same metal material as the substrate 2 and whose width dimension is set smaller than the inner diameter of the cylindrical body 12 is provided. There is.
　円筒体１２は、その中心軸が内部通路６ａの筒中心線Ｃ１に一致して延びる姿勢で配管本体７の内部に嵌挿可能であり、当該配管本体７に嵌挿された状態において、各端部が第１配管継手８及び第２配管継手９にそれぞれ接触する位置になっている。 The cylindrical body 12 can be fitted into the inside of the pipe body 7 in a posture in which the central axis extends in line with the cylinder center line C1 of the internal passage 6a, and each end of the cylindrical body 12 is fitted into the pipe body 7. The portions are in contact with the first pipe joint 8 and the second pipe joint 9, respectively.
　円筒体１２の外周面には、当該円筒体１２の内部に貫通するとともに筒中心線Ｃ１方向に間隔Ｄ１をあけて形成された一対の取付用孔１４が、筒中心線Ｃ１を挟んで対称に二組形成され、各取付用孔１４は、円筒体１２と同じ金属材であるステンレス材からなる固定用ピン１５（固定手段）を挿通可能になっている。尚、以下では、便宜上、筒中心線Ｃ１方向に間隔Ｄ１をあけて形成された一方の一対の取付用孔１４をそれぞれ取付用孔１４Ａと呼び、他方の一対の取付用孔１４をそれぞれ取付用孔１４Ｂと呼ぶことにする。 On the outer peripheral surface of the cylindrical body 12, a pair of mounting holes 14 formed so as to penetrate the inside of the cylindrical body 12 and at intervals D1 in the direction of the cylinder center line C1 are symmetrical with the cylinder center line C1 in between. Two sets are formed, and each mounting hole 14 is capable of inserting a fixing pin 15 (fixing means) made of a stainless steel material which is the same metal material as the cylindrical body 12. In the following, for convenience, one pair of mounting holes 14 formed at intervals D1 in the cylinder center line C1 direction are referred to as mounting holes 14A, and the other pair of mounting holes 14 are respectively for mounting. It will be called hole 14B.
　また、円筒体１２外周面の両取付用孔１４の間と両取付用孔１４Ｂの間とには、当該円筒体１２の内部に連通するとともに筒中心線Ｃ１を挟んで対称に位置する一対の観察用窓１２ａが形成されている。 Further, a pair of mounting holes 14 on the outer peripheral surface of the cylindrical body 12 and between the mounting holes 14B communicate with each other inside the cylindrical body 12 and are symmetrically located with the cylinder center line C1 in between. An observation window 12a is formed.
　観察用プレート１３は、円筒体１２の内部にその中心軸に沿う姿勢で収容可能になっている。 The observation plate 13 can be accommodated inside the cylindrical body 12 in a posture along its central axis.
　観察用プレート１３には、板厚方向に貫通する一対の挿通孔１３ａが長手方向に間隔Ｄ１をあけて形成され、各挿通孔１３ａは、固定用ピン１５を挿通可能になっている。 A pair of insertion holes 13a penetrating in the plate thickness direction are formed in the observation plate 13 with an interval D1 in the longitudinal direction, and each insertion hole 13a is capable of inserting a fixing pin 15.
　そして、円筒体１２の内部に観察用プレート１３を収容すると、当該観察用プレート１３の挿通孔１３ａは、筒中心線Ｃ１を挟んで対称に位置する取付用孔１４Ａと取付用孔１４Ｂとの間に位置するようになっていて、取付用孔１４Ａ、挿通孔１３ａ及び取付用孔１４Ｂの順に固定用ピン１５を挿通させることにより、観察用プレート１３を円筒体１２に固定できるようになっている。 Then, when the observation plate 13 is housed inside the cylindrical body 12, the insertion hole 13a of the observation plate 13 is between the mounting holes 14A and the mounting holes 14B located symmetrically with respect to the cylinder center line C1. The observation plate 13 can be fixed to the cylindrical body 12 by inserting the fixing pin 15 in the order of the mounting hole 14A, the insertion hole 13a, and the mounting hole 14B. ..
　すなわち、円筒体１２と一対の固定用ピン１５とで本発明のプレート着脱部１６を構成しており、両固定用ピン１５を抜き差しすることで、円筒体１２に観察用プレート１３を着脱できるようになっている。 That is, the plate attachment / detachment portion 16 of the present invention is composed of the cylinder 12 and the pair of fixing pins 15, and the observation plate 13 can be attached / detached to / from the cylinder 12 by inserting / removing both fixing pins 15. It has become.
　円筒体１２に取り付けられた観察用プレート１３の領域を除く円筒体１２の内部の断面積Ｓ２は、図４に示すように、流通路２ａの断面積Ｓ１と略同じに設定されている。 As shown in FIG. 4, the cross-sectional area S2 inside the cylindrical body 12 excluding the region of the observation plate 13 attached to the cylindrical body 12 is set to be substantially the same as the cross-sectional area S1 of the flow passage 2a.
　また、図２及び図４に示すように、円筒体１２が透明な配管本体７の内方に取り付けられるとともに、各観察用窓１２ａが円筒体１２の内部に取り付けられた観察用プレート１３に対応する位置になっているので、配管本体７の外側から観察用プレート１３を観察できるようになっている。 Further, as shown in FIGS. 2 and 4, the cylindrical body 12 is attached to the inside of the transparent piping body 7, and each observation window 12a corresponds to the observation plate 13 attached to the inside of the cylindrical body 12. Since the position is set so that the observation plate 13 can be observed from the outside of the piping main body 7.
　次に、本発明の実施形態１の腐食検査器具１を用いたヒートシンク１０内部の腐食状態の検査方法について詳述する。 Next, a method for inspecting the corrosion state inside the heat sink 10 using the corrosion inspection instrument 1 of the first embodiment of the present invention will be described in detail.
　まず、被冷却体に対してヒートシンク１０を取り付ける際、流通路２ａの液体冷媒を流入させる側の端部に流入管５ａを接続する一方、流通路２ａの液体冷媒を流出させる側の端部に腐食検査器具１の第１配管継手８を接続するとともに第２配管継手９に流出管５ｂを接続した後、流通路２ａに液体冷媒を循環させる。すると、円筒体１２の内部に取り付けられた観察用プレート１３は、内部通路６ａを通過する液体冷媒に常に浸された状態になる。 First, when the heat sink 10 is attached to the object to be cooled, the inflow pipe 5a is connected to the end of the flow passage 2a on the side where the liquid refrigerant flows in, while the end of the flow passage 2a on the side where the liquid refrigerant flows out. After connecting the first pipe joint 8 of the corrosion inspection instrument 1 and the outflow pipe 5b to the second pipe joint 9, the liquid refrigerant is circulated in the flow passage 2a. Then, the observation plate 13 attached to the inside of the cylindrical body 12 is always immersed in the liquid refrigerant passing through the internal passage 6a.
　作業者は、例えば、予め決めた所定の期間毎に腐食検査器具１の配管本体７を目視で確認する。すると、配管本体７は、透明な樹脂材で形成されているので、配管本体７の内部に収容された円筒体１２を見ることができる。円筒体１２の外周面には、当該円筒体１２の内部を観察可能な観察用窓１２ａが形成されているので、作業者は、ヒートシンク１０の稼働を止めることなく円筒体１２の内部に取り付けられた観察用プレート１３の状態を目視で観察できる。本発明の腐食検査器具１の検査用配管６は、ヒートシンク１０に連続しており、また、検査用配管６の内部通路６ａに位置する観察用プレート１３とヒートシンク１０の基板２とが同じアルミニウム合金材で形成されているので、液体冷媒が循環する基板２の流通路２ａと検査用配管６の内部通路６ａに位置する観察用プレート１３とが同じ状態で劣化していくようになる。したがって、観察用プレート１３を観察用窓１２ａから観察することで基板２の内部の腐食状態を知ることができる。このように、本発明の腐食検査器具１は、ヒートシンク１０の内部の状態を知るための目視検査のような簡易的な検査を、簡単に、且つ、効率良く実施することができる。 The worker visually checks the piping body 7 of the corrosion inspection tool 1 at predetermined intervals, for example. Then, since the pipe body 7 is made of a transparent resin material, the cylindrical body 12 housed inside the pipe body 7 can be seen. Since an observation window 12a for observing the inside of the cylinder 12 is formed on the outer peripheral surface of the cylinder 12, the operator can attach the heat sink 10 to the inside of the cylinder 12 without stopping the operation of the heat sink 10. The state of the observation plate 13 can be visually observed. The inspection pipe 6 of the corrosion inspection instrument 1 of the present invention is continuous with the heat sink 10, and the observation plate 13 located in the internal passage 6a of the inspection pipe 6 and the substrate 2 of the heat sink 10 are the same aluminum alloy. Since it is made of a material, the flow passage 2a of the substrate 2 through which the liquid refrigerant circulates and the observation plate 13 located in the internal passage 6a of the inspection pipe 6 deteriorate in the same state. Therefore, by observing the observation plate 13 from the observation window 12a, it is possible to know the corrosion state inside the substrate 2. As described above, the corrosion inspection instrument 1 of the present invention can easily and efficiently carry out a simple inspection such as a visual inspection for knowing the internal state of the heat sink 10.
　作業者は、ヒートシンク１０内部の腐食状態について、例えば、電子顕微鏡での観察や成分分析等の詳細な検査を実施する場合、ヒートシンク１０の稼働を停止させて基板２の流通路２ａに液体冷媒を循環させないようにした後、図５に示すように、腐食検査器具１を分解して、観察用プレート１３を円筒体１２の内部から取り出し、その腐食状態を検査する。このように、本発明の腐食検査器具１は、例えば周期的に検査用配管６の内部通路６ａから観察用プレート１３を取り出して当該観察用プレート１３を観察することでヒートシンク１０内部の腐食状態を精度良く推定できるので、費用をかけずに簡単に、且つ、効率的にヒートシンク１０の内部の状態を検査することができる。 When the operator carries out a detailed inspection of the corrosion state inside the heat sink 10, for example, observation with an electron microscope or component analysis, the operator stops the operation of the heat sink 10 and puts a liquid refrigerant in the flow passage 2a of the substrate 2. After preventing circulation, as shown in FIG. 5, the corrosion inspection instrument 1 is disassembled, the observation plate 13 is taken out from the inside of the cylindrical body 12, and the corrosion state is inspected. As described above, in the corrosion inspection instrument 1 of the present invention, for example, the observation plate 13 is periodically taken out from the internal passage 6a of the inspection pipe 6 and the observation plate 13 is observed to check the corrosion state inside the heat sink 10. Since it can be estimated accurately, the internal state of the heat sink 10 can be inspected easily and efficiently at no cost.
　また、ヒートシンク１０の内部の腐食状態を詳細に検査する際の準備作業は、ヒートシンク１０に接続された検査用配管６の内部から観察用プレート１３を取り出すだけであるので、冷却する機器からヒートシンク１０を検査のたびに取り外すといった作業の必要が無く、検査にかかる手間を少なくすることができる。 Further, since the preparatory work for inspecting the corrosion state inside the heat sink 10 in detail is only to take out the observation plate 13 from the inside of the inspection pipe 6 connected to the heat sink 10, the heat sink 10 is cooled. There is no need to remove the heat sink every time the inspection is performed, and the labor required for the inspection can be reduced.
　このように、本発明の実施形態１の腐食検査器具１は、ヒートシンク１０を分解することなく当該ヒートシンク１０内部の簡易的な検査と詳細な検査との両方を実施することができる。 As described above, the corrosion inspection instrument 1 of the first embodiment of the present invention can carry out both a simple inspection and a detailed inspection inside the heat sink 10 without disassembling the heat sink 10.
　また、プレート着脱部１６によって観察用プレート１３を検査用配管６の内部通路６ａに着脱できるので、検査用配管６の内部通路６ａから観察用プレート１３を取り外して腐食状態を確認した後、確認後の観察用プレート１３を検査用配管６の内部通路６ａにおける取り外す前と同じ位置に戻せるようになる。したがって、定期的な検査を行いながらヒートシンク１０内部の腐食状態を精度良く推定することができる。 Further, since the observation plate 13 can be attached to and detached from the internal passage 6a of the inspection pipe 6 by the plate attachment / detachment portion 16, the observation plate 13 is removed from the internal passage 6a of the inspection pipe 6 to check the corrosion state, and then the confirmation is performed. The observation plate 13 can be returned to the same position as before the removal in the internal passage 6a of the inspection pipe 6. Therefore, it is possible to accurately estimate the corrosion state inside the heat sink 10 while performing periodic inspections.
　また、観察用プレート１３は、配管本体７の内部に嵌挿された円筒体１２の内部にその中心軸に沿って延びる姿勢となるように収容されているので、内部通路６ａの断面において配管本体７の内部に取り付ける円筒体１２及び観察用プレート１３の占める領域が狭くなる。したがって、観察用プレート１３が液体冷媒に浸された状態で当該液体冷媒が内部通路６ａをスムーズに流れるようになるので、ヒートシンク１０の性能を低下させることなくヒートシンク１０の内部の腐食状態を検査することができる。 Further, since the observation plate 13 is housed inside the cylindrical body 12 inserted inside the pipe body 7 so as to extend along the central axis thereof, the pipe body 13 is housed in the cross section of the internal passage 6a. The area occupied by the cylindrical body 12 and the observation plate 13 attached to the inside of the 7 is narrowed. Therefore, since the liquid refrigerant smoothly flows through the internal passage 6a while the observation plate 13 is immersed in the liquid refrigerant, the corrosion state inside the heat sink 10 is inspected without deteriorating the performance of the heat sink 10. be able to.
　また、腐食検査器具１におけるヒートシンク１０との接続部分から観察用プレート１３の固定部分まで（第１配管継手８、円筒体１２及び固定用ピン１５）が同じ金属材で形成されたものになるとともに互いに接触した状態になり、さらには、観察用プレート１３がヒートシンク１０との接続箇所である第１配管継手８から離れた位置になる。したがって、例えば、ＩＥＧＴのような漏れ電流が発生する高電圧機器にヒートシンク１０を接触させて当該ヒートシンク１０の流通路２ａを流れる液体冷媒によって高電圧機器を冷却するような場合であっても観察用プレート１３に電荷が集中しなくなり、観察用プレート１３がヒートシンク１０の内部と同じ速さで腐食していくようになるので、ヒートシンク１０の内部の検査を精度良く実施することができる。 Further, from the connection portion with the heat sink 10 in the corrosion inspection instrument 1 to the fixing portion of the observation plate 13 (first piping joint 8, cylindrical body 12 and fixing pin 15) are made of the same metal material. The observation plates 13 are in contact with each other, and the observation plate 13 is located away from the first pipe joint 8 which is the connection point with the heat sink 10. Therefore, for example, even in the case where the heat sink 10 is brought into contact with a high-voltage device such as IEGT where a leakage current is generated and the high-voltage device is cooled by the liquid refrigerant flowing through the flow passage 2a of the heat sink 10, it is for observation. Since the electric charge does not concentrate on the plate 13 and the observation plate 13 corrodes at the same speed as the inside of the heat sink 10, the inside of the heat sink 10 can be inspected with high accuracy.
　さらに、円筒体１２に取り付けられた観察用プレート１３の領域を除く円筒体１２の内部の断面積Ｓ２が流通路２ａの断面積Ｓ１と略同じに設定されているので、ヒートシンク１０の流通路２ａを流れる流体の流動状態、特に流速と、円筒体１２の内部を流れる液体冷媒の流動状態とが同じか、或いは、同等になる。したがって、ヒートシンク１０の内部の腐食進度と観察用プレート１３の腐食進度とが略同じになるので、ヒートシンク１０の内部の検査をさらに精度良く行うことができる。 Further, since the cross-sectional area S2 inside the cylindrical body 12 excluding the region of the observation plate 13 attached to the cylindrical body 12 is set to be substantially the same as the cross-sectional area S1 of the flow passage 2a, the flow passage 2a of the heat sink 10 is set. The flow state of the fluid flowing through the cylinder, particularly the flow velocity, is the same as or equal to the flow state of the liquid refrigerant flowing inside the cylindrical body 12. Therefore, since the corrosion progress inside the heat sink 10 and the corrosion progress of the observation plate 13 are substantially the same, the inside of the heat sink 10 can be inspected with higher accuracy.
　また、本発明の実施形態１では、円筒体１２及び固定用ピン１５が金属材であるステンレス材で形成されているが、これに限らず、例えば、非金属材である樹脂材で形成されたものであってもよい。もし仮に、ヒートシンク１０で冷却する被冷却体から漏れ電流が発生しないような場合には、円筒体１２及び固定用ピン１５を樹脂材で形成可能であるとともに、観察用プレート１３の固定位置は円筒体１２の内部に限定されない。 Further, in the first embodiment of the present invention, the cylindrical body 12 and the fixing pin 15 are formed of a stainless steel material which is a metal material, but the present invention is not limited to this, and the cylinder body 12 and the fixing pin 15 are formed of, for example, a resin material which is a non-metal material. It may be a thing. If leakage current does not occur from the cooled body cooled by the heat sink 10, the cylindrical body 12 and the fixing pin 15 can be formed of a resin material, and the fixing position of the observation plate 13 is a cylinder. It is not limited to the inside of the body 12.
　また、本発明の実施形態１では、円筒体１２を用いて観察用プレート１３を配管本体７の内側に着脱するようになっているが、その他の手段を用いて観察用プレート１３を配管本体７の内側に着脱するようにしてもよい。 Further, in the first embodiment of the present invention, the observation plate 13 is attached to and detached from the inside of the piping main body 7 by using the cylindrical body 12, but the observation plate 13 is attached to the piping main body 7 by other means. It may be attached to and detached from the inside of the.
　また、本発明の実施形態１では、円筒体１２の外周面に２つの観察用窓１２ａが形成されているが、観察用窓１２ａは１つだけ形成されていてもよいし、３つ以上形成されていてもよい。 Further, in the first embodiment of the present invention, two observation windows 12a are formed on the outer peripheral surface of the cylindrical body 12, but only one observation window 12a may be formed, or three or more observation windows 12a may be formed. It may have been done.
　《発明の実施形態２》
　図６乃至図８は、本発明の実施形態２の腐食検査器具１を示す。この実施形態２は、配管本体７内部に検査ユニット１１ではなく、円筒状をなす観察用パイプ１７（観察用部材）が着脱可能に嵌挿されている点が実施形態１と異なっている以外は実施形態１と同様であるので、実施形態１と同様の部分には同じ符号を付し、その他、異なる部分のみを説明する。 << Embodiment 2 of the invention >>
6 to 8 show the corrosion inspection instrument 1 of the second embodiment of the present invention. This embodiment 2 is different from the first embodiment in that the observation pipe 17 (observation member) having a cylindrical shape is detachably fitted inside the piping main body 7 instead of the inspection unit 11. Since it is the same as that of the first embodiment, the same parts as those of the first embodiment are designated by the same reference numerals, and only other different parts will be described.
　観察用パイプ１７は、流通路２ａにおいて第１配管継手８が接続される部分（図１のＸ１部分）の腐食状態を検査するものであり、基板２と同じ金属材であるアルミニウム合金材で形成されている。 The observation pipe 17 is for inspecting the corrosion state of the portion (X1 portion in FIG. 1) to which the first pipe joint 8 is connected in the flow passage 2a, and is formed of an aluminum alloy material which is the same metal material as the substrate 2. Has been done.
　観察用パイプ１７は、図７及び図８に示すように、断面凹状をなす第１半割体１７ａ及び第２半割体１７ｂからなっている。 As shown in FIGS. 7 and 8, the observation pipe 17 is composed of a first half-split body 17a and a second half-split body 17b having a concave cross section.
　観察用パイプ１７の一端から他端に亘る管内通路の断面形状Ｚは、流通路２ａにおいて第１配管継手８が接続される部分の断面形状に一致する形状になっている。 The cross-sectional shape Z of the in-pipe passage extending from one end to the other end of the observation pipe 17 has a shape that matches the cross-sectional shape of the portion of the flow passage 2a to which the first pipe joint 8 is connected.
　観察用パイプ１７の管内通路における一側半分の断面形状Ｚ１は、中央部分が管中心線に一致する長方形状をなす一方、他側半分の断面形状Ｚ２は、中央部分が管中心線から偏心する円形状をなしている。 The cross-sectional shape Z1 of one side half of the pipe passage of the observation pipe 17 has a rectangular shape whose central portion coincides with the pipe center line, while the cross-sectional shape Z2 of the other side half is eccentric from the pipe center line. It has a circular shape.
　そして、観察用パイプ１７は、図７に示すように、配管本体７の内側に嵌挿させると、観察用パイプ１７の管内通路が検査用配管６の内部通路６ａに沿うようになっていて、流通路２ａを流通する液体冷媒が観察用パイプ１７の管内通路を通過するようになっている。 Then, as shown in FIG. 7, when the observation pipe 17 is fitted inside the pipe body 7, the in-pipe passage of the observation pipe 17 is aligned with the internal passage 6a of the inspection pipe 6. The liquid refrigerant flowing through the flow passage 2a passes through the inner passage of the observation pipe 17.
　以上のように、本発明の実施形態２の腐食検査器具１によると、ヒートシンク１０の流通路２ａにおいて第１配管継手８が接続する部分を流れる液体冷媒の流動状態と観察用パイプ１７の管内通路を流れる液体冷媒の流動状態とを同じ状態にできるので、流通路２ａにおいて第１配管継手８が接続する部分の腐食進度と観察用パイプ１７の内面の腐食進度とが同じになる。このように、ヒートシンク１０内部において腐食進度を観察したい領域の断面形状を観察用パイプ１７の内部に再現しておくことで、ヒートシンク１０内部の特定領域を精度良く検査することができる。 As described above, according to the corrosion inspection instrument 1 of the second embodiment of the present invention, the flow state of the liquid refrigerant flowing through the portion where the first pipe joint 8 is connected in the flow passage 2a of the heat sink 10 and the in-pipe passage of the observation pipe 17. Since the flow state of the liquid refrigerant flowing through the pipe can be made the same, the corrosion progress of the portion of the flow passage 2a to which the first pipe joint 8 is connected becomes the same as the corrosion progress of the inner surface of the observation pipe 17. In this way, by reproducing the cross-sectional shape of the region where the corrosion progress is desired inside the heat sink 10 inside the observation pipe 17, the specific region inside the heat sink 10 can be inspected with high accuracy.
　また、検査用配管６から取り外した観察用パイプ１７が第１半割体１７ａと第２半割体１７ｂとの半割れ状態になるので、観察用パイプ１７の内面の状態を確認するために観察用パイプ１７を覗き込む必要が無くなる。したがって、作業者は観察用パイプ１７の腐食状態を簡単に確認することができる。 Further, since the observation pipe 17 removed from the inspection pipe 6 is in a half-split state between the first half-split body 17a and the second half-split body 17b, observation is performed to confirm the state of the inner surface of the observation pipe 17. There is no need to look into the pipe 17. Therefore, the operator can easily confirm the corroded state of the observation pipe 17.
　尚、本発明の実施形態２では、観察用パイプ１７の管内通路の断面形状Ｚを流通路２ａにおいて第１配管継手８が接続する部分の断面形状に一致させているが、流通路２ａにおいてその他の腐食状態を観察したい所定の領域の断面形状に一致させるようにしてもよい。 In the second embodiment of the present invention, the cross-sectional shape Z of the in-pipe passage of the observation pipe 17 matches the cross-sectional shape of the portion to which the first pipe joint 8 is connected in the flow passage 2a. The corrosion state may be matched to the cross-sectional shape of a predetermined region to be observed.
　また、本発明の実施形態２では、観察用パイプ１７を半割れ構造にしているが、半割れ構造にするのが必須ではない。 Further, in the second embodiment of the present invention, the observation pipe 17 has a half-split structure, but it is not essential to have a half-split structure.
　また、本発明の実施形態１，２では、配管本体７が透明な樹脂材で形成されているが、透明でなくてもよく、他の材料で形成されていてもよい。 Further, in the first and second embodiments of the present invention, the piping main body 7 is made of a transparent resin material, but it may not be transparent and may be made of another material.
　また、本発明の実施形態１，２では、腐食検査器具１がアルミニウム合金材で形成された基板２の内部の腐食状態を検査しているが、腐食検査器具１は、その他の材料で形成された基板２の内部の腐食状態も検査することができる。 Further, in the first and second embodiments of the present invention, the corrosion inspection instrument 1 inspects the corrosion state inside the substrate 2 made of the aluminum alloy material, but the corrosion inspection instrument 1 is formed of other materials. The corrosion state inside the substrate 2 can also be inspected.
　また、本発明の実施形態１，２の腐食検査器具１は、基板２の流通路２ａにおける液体冷媒の流出側の端部に接続されているが、流通路２ａにおける液体冷媒の流入側の端部に接続しても検査を実施することができる。 Further, the corrosion inspection instrument 1 of the first and second embodiments of the present invention is connected to the end of the flow passage 2a of the substrate 2 on the outflow side of the liquid refrigerant, but the end of the flow passage 2a on the inflow side of the liquid refrigerant. Inspection can be carried out even if it is connected to the unit.
　また、本発明の腐食検査器具１は、ヒートシンク１０内部の腐食状態の検査に適用したが、液体や気体に関わらず内部に熱媒体のような流体を循環させるその他の機器の内部の腐食状態を検査するのにも適用することができる。　 Further, the corrosion inspection instrument 1 of the present invention was applied to the inspection of the corrosion state inside the heat sink 10, but the corrosion state inside other devices that circulate a fluid such as a heat medium inside regardless of liquid or gas. It can also be applied for inspection. It was
　本発明は、例えば、ヒートシンクの如き機器の内部に形成された熱媒体が循環する流通路の腐食状態を検査する腐食検査器具に適している。 The present invention is suitable for a corrosion inspection instrument for inspecting a corrosion state of a flow passage through which a heat medium formed inside a device such as a heat sink circulates.
　１　　　　　腐食検査器具
　２ａ　　　　流通路
　６　　　　　検査用配管
　６ａ　　　　内部通路
　７　　　　　配管本体
　８　　　　　第１配管継手
　９　　　　　第２配管継手
　１０　　　　ヒートシンク（被検査体）
　１２　　　　円筒体
　１２ａ　　　観察用窓
　１３　　　　観察用プレート（観察用部材）
　１５　　　　固定用ピン（固定手段）
　１６　　　　プレート着脱部
　１７　　　　観察用パイプ（観察用部材）
　Ｃ１　　　　筒中心線

  1 Corrosion inspection equipment 2a Flow passage 6 Inspection piping 6a Internal passage 7 Piping body 8 1st piping joint 9 2nd piping joint 10 Heat sink (inspected body)
12 Cylindrical body 12a Observation window 13 Observation plate (observation member)
15 Fixing pin (fixing means)
16 Plate attachment / detachment part 17 Observation pipe (observation member)
C1 cylinder center line

Claims (8)

  1. 　金属製被検査体の内部に形成された流体流通路の腐食状態を検査する腐食検査器具であって、
    　一端が上記流通路の端部に着脱可能に接続され、上記流通路に流体を流入させるか、或いは、上記流通路から流体を流出させる内部通路を筒中心線上に有する検査用配管を備え、
    　該検査用配管は、上記内部通路に上記被検査体と同じ金属材で形成された観察用部材を着脱可能に構成されていることを特徴とする腐食検査器具。     It is a corrosion inspection instrument that inspects the corrosion state of the fluid flow passage formed inside the metal object to be inspected.
    One end is detachably connected to the end of the flow passage, and the inspection pipe is provided with an internal passage on the center line of the cylinder, which allows the fluid to flow into the flow passage or flows out from the flow passage.
    The inspection pipe is a corrosion inspection instrument characterized in that an observation member made of the same metal material as the inspected body is detachably configured in the internal passage.
  2. 　請求項１に記載の腐食検査器具において、
    　上記観察用部材は、帯板状をなす観察用プレートであり、
    　上記検査用配管には、上記観察用プレートを上記内部通路に着脱可能なプレート着脱部が設けられていることを特徴とする腐食検査器具。     In the corrosion inspection instrument according to claim 1,
    The observation member is an observation plate in the shape of a strip.
    A corrosion inspection instrument characterized in that the inspection pipe is provided with a plate attachment / detachment portion to which the observation plate can be attached / detached to / from the internal passage.
  3. 　請求項２に記載の腐食検査器具において、
    　上記検査用配管は、内方に取り付けられた上記観察用プレートを外側から観察可能に透明な樹脂材で形成された配管本体を備えていることを特徴とする腐食検査器具。     In the corrosion inspection instrument according to claim 2,
    The inspection pipe is a corrosion inspection instrument characterized by having a pipe body made of a transparent resin material so that the observation plate attached to the inside can be observed from the outside.
  4. 　請求項３に記載の腐食検査器具において、
    　上記プレート着脱部は、中心軸が上記内部通路に沿って延びる姿勢で上記配管本体の内部に嵌挿可能で、且つ、内部に上記観察用プレートを上記中心軸に沿う姿勢で収容可能な筒体を備え、
    　該筒体の外周面における収容した上記観察用プレートに対応する位置には、上記筒体内部に連通する観察用窓が形成されていることを特徴とする腐食検査器具。     In the corrosion inspection instrument according to claim 3,
    The plate attachment / detachment portion is a tubular body that can be inserted into the inside of the piping body in a posture in which the central axis extends along the internal passage, and can accommodate the observation plate inside in a posture along the central axis. Equipped with
    A corrosion inspection instrument characterized in that an observation window communicating with the inside of the cylinder is formed at a position corresponding to the housed observation plate on the outer peripheral surface of the cylinder.
  5. 　請求項４に記載の腐食検査器具において、
    　上記配管本体の一方の端部には、上記被検査体に接続される金属製の継手が取り付けられ、
    　上記筒体は、上記継手と同じ金属材で形成されるとともに、上記配管本体に嵌挿された状態において、端部が上記継手に接触する位置になっており、
    　上記観察用プレートは、上記継手と同じ金属材で形成された固定手段により上記筒体の中央に固定されることを特徴とする腐食検査器具。     In the corrosion inspection instrument according to claim 4,
    A metal joint connected to the inspected body is attached to one end of the piping body.
    The cylinder is made of the same metal material as the joint, and the end portion is in contact with the joint when it is fitted into the pipe body.
    The observation plate is a corrosion inspection instrument characterized in that it is fixed to the center of the cylinder by a fixing means formed of the same metal material as the joint.
  6. 　請求項４又は５に記載の腐食検査器具において、
    　上記筒体に取り付けられた上記観察用プレートの領域を除く上記筒体内部の断面積は、上記流通路の断面積と同じに設定されていることを特徴とする腐食検査器具。     In the corrosion inspection instrument according to claim 4 or 5.
    A corrosion inspection instrument characterized in that the cross-sectional area inside the cylinder excluding the area of the observation plate attached to the cylinder is set to be the same as the cross-sectional area of the flow passage.
  7. 　請求項１に記載の腐食検査器具において、
    　上記観察用部材は、一端から他端に亘る管内通路の断面形状を上記被検査体における流体流通路の所定領域の断面形状に一致させた円筒状をなす観察用パイプであり、
    　上記検査用配管の内部通路に上記観察用パイプを上記管内通路が上記内部通路に沿うように嵌挿可能に構成されていることを特徴とする腐食検査器具。     In the corrosion inspection instrument according to claim 1,
    The observation member is a cylindrical observation pipe in which the cross-sectional shape of the in-pipe passage extending from one end to the other end matches the cross-sectional shape of a predetermined region of the fluid flow passage in the inspected object.
    A corrosion inspection instrument characterized in that the observation pipe can be inserted into the internal passage of the inspection pipe so that the passage in the pipe can be inserted along the internal passage.
  8. 　請求項７に記載の腐食検査器具において、
    　上記観察用パイプは、断面凹状をなす第１半割体及び第２半割体からなることを特徴とする腐食検査器具。

          In the corrosion inspection instrument according to claim 7,
    The observation pipe is a corrosion inspection instrument characterized by being composed of a first half-split body and a second half-split body having a concave cross section.
PCT/JP2021/018007 2020-06-03 2021-05-12 Corrosion inspection tool WO2021246119A1 (en)

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Publication number Priority date Publication date Assignee Title
JPS5215290U (en) * 1975-07-21 1977-02-03
JPH03249546A (en) * 1991-01-17 1991-11-07 Niigata Eng Co Ltd Material inspecting device for structure body for handling fluid
JPH0828803A (en) * 1994-07-13 1996-02-02 Kurita Water Ind Ltd Apparatus for supervising boiler condensate system
JPH10123077A (en) * 1996-10-24 1998-05-15 Hitachi Ltd Method and device for monitoring pump for power generation
JP2003083870A (en) * 2001-09-10 2003-03-19 Genshiryoku Anzen Syst Kenkyusho:Kk Direct observation device of high-temperature corrosive fluid inner part
JP2008241558A (en) * 2007-03-28 2008-10-09 Kurita Water Ind Ltd Corrosion monitor device
JP2014052195A (en) * 2012-09-05 2014-03-20 Hitachi Ltd Corrosive environment capturing device and turbine
JP2017020683A (en) * 2015-07-08 2017-01-26 Ｊｆｅスチール株式会社 Indirect type gas cooling device and deterioration diagnosis method of indirect type gas cooling device
JP2019528433A (en) * 2016-07-19 2019-10-10 エコラブ ユーエスエイ インク Control of industrial water treatment by digital imaging

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5215290U (en) * 1975-07-21 1977-02-03
JPH03249546A (en) * 1991-01-17 1991-11-07 Niigata Eng Co Ltd Material inspecting device for structure body for handling fluid
JPH0828803A (en) * 1994-07-13 1996-02-02 Kurita Water Ind Ltd Apparatus for supervising boiler condensate system
JPH10123077A (en) * 1996-10-24 1998-05-15 Hitachi Ltd Method and device for monitoring pump for power generation
JP2003083870A (en) * 2001-09-10 2003-03-19 Genshiryoku Anzen Syst Kenkyusho:Kk Direct observation device of high-temperature corrosive fluid inner part
JP2008241558A (en) * 2007-03-28 2008-10-09 Kurita Water Ind Ltd Corrosion monitor device
JP2014052195A (en) * 2012-09-05 2014-03-20 Hitachi Ltd Corrosive environment capturing device and turbine
JP2017020683A (en) * 2015-07-08 2017-01-26 Ｊｆｅスチール株式会社 Indirect type gas cooling device and deterioration diagnosis method of indirect type gas cooling device
JP2019528433A (en) * 2016-07-19 2019-10-10 エコラブ ユーエスエイ インク Control of industrial water treatment by digital imaging

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