WO2013129411A1 - Weld inspection device and weld inspection method for boiler water-cooled wall - Google Patents

Weld inspection device and weld inspection method for boiler water-cooled wall Download PDF

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Publication number
WO2013129411A1
WO2013129411A1 PCT/JP2013/054991 JP2013054991W WO2013129411A1 WO 2013129411 A1 WO2013129411 A1 WO 2013129411A1 JP 2013054991 W JP2013054991 W JP 2013054991W WO 2013129411 A1 WO2013129411 A1 WO 2013129411A1
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WO
WIPO (PCT)
Prior art keywords
wall
cooled
edge
water
water cooling
Prior art date
Application number
PCT/JP2013/054991
Other languages
French (fr)
Japanese (ja)
Inventor
康正 三井
久雄 浦山
Original Assignee
三菱重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to CN201380004492.5A priority Critical patent/CN104011524B/en
Priority to IN1702MUN2014 priority patent/IN2014MN01702A/en
Priority to BR112014020553-1A priority patent/BR112014020553B1/en
Priority to KR1020147022418A priority patent/KR101643067B1/en
Publication of WO2013129411A1 publication Critical patent/WO2013129411A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
    • G01M3/14—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/142—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for tubes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
    • G01M3/14—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/145—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for welds

Definitions

  • the present invention relates to a welded portion inspection apparatus and a welded portion inspection method for boiler water-cooled walls.
  • JIS Z2329 2002 defines a vacuum method as a foam leakage test method.
  • the vacuum box is brought into contact with the test surface in an airtight manner, the inside of the vacuum box is depressurized, and gas leakage on the test surface is determined depending on whether the foaming liquid applied to the test surface is foamed or not. And check the location.
  • Patent Document 1 discloses a leak inspection device for a condenser tube sheet that can inspect leakage of a condenser cooling pipe based on this vacuum method.
  • the two batting boxes of the leak inspection apparatus are brought into contact with a flat tube sheet, and the leak of the cooling pipe extending between the tube sheets is inspected.
  • PT (penetration flaw detection) inspection is known as a leakage inspection method for welds.
  • the inspection target part is washed with a cleaning liquid, and then a penetrant is applied to the inspection target part. Then, a developer is applied after wiping off excess penetrating liquid on the surface of the inspection target portion.
  • the permeation liquid that has penetrated into the defect in the welded portion is colored, so that the presence or absence of the defect can be visually confirmed.
  • the water cooling pipes are arranged in parallel, and the gaps between the water cooling pipes are closed by fins welded to the water cooling pipes in the longitudinal direction.
  • the boiler water-cooled wall has irregularities according to the curvature of the outer peripheral surface of the water-cooled pipe, and when the leak inspection device for the condenser tube sheet of Patent Document 1 is used, the batting box is airtightly applied to the boiler water-cooled wall. It cannot be touched. Therefore, even if it uses the leak inspection apparatus of the condenser tube sheet of patent document 1, it is JIS about the welding part of a boiler water cooling wall. It was impossible to perform the vacuum method specified in Z2329 2002.
  • the inspection of the welded portion of the boiler water-cooled wall has been performed by PT inspection.
  • some chemical solutions used in PT inspection are flammable, and there is a problem that care is required in handling the chemical solution and the inspection is complicated.
  • the PT inspection has a problem that it takes a long time due to a large number of processes, and there is a problem that the detection accuracy of the penetrating defect is not high.
  • the present invention provides a welded portion inspection apparatus for a boiler water-cooled wall, comprising a plurality of parallel water-cooled tubes arranged in parallel and a fin that closes a gap between the adjacent parallel water-cooled tubes by welding.
  • a part of at least two adjacent water-cooled tubes adjacent to each other and a part of the fin constitute an inspection object part, and form a vacuum chamber together with the inspection object part, and connected to the vacuum box
  • the vacuum box includes a window portion having translucency, and two side walls respectively disposed along the corresponding parallel water-cooled tubes among the two parallel water-cooled tubes, At least one end wall arranged to intersect the longitudinal direction of the parallel water-cooled tubes, and a side edge seal attached to the edge of the side wall and sealing between the edge of the side wall and the parallel water-cooled tube Attach to the edge of the member and the end wall And an edge seal member that seals between the edge of the end wall and the parallel water-cooled pipe and the fin, and the edge of the end wall includes a linear edge along the fin; An arcuate edge portion extending along the parallel water-cooled tubes, and the edge seal member is attached to the linear seal portion attached to the linear edge portion and the arcuate edge portion.
  • the edge of the end wall has an arcuate edge
  • the end edge seal member has an arcuate seal attached to the arcuate edge.
  • the thickness of the linear seal portion is larger than the thickness of the arc-shaped seal portion. According to this structure, even if the welding part between a parallel water-cooled pipe and a fin or the welding part of the plate pieces which comprise a fin protrudes from the circumference
  • the vacuum box In the boiler water-cooling wall welded part inspection device used when a part of the parallel water-cooled pipes extend linearly in the inspection target part of the boiler water-cooling wall, preferably, the vacuum box is
  • the parallel water-cooled tubes have two end walls that are separated from each other in the longitudinal direction and to which the edge seal members are respectively attached. According to this configuration, in the inspection target portion of the boiler water cooling wall, when the parallel water cooling tubes extend linearly, the vacuum box can form an airtight vacuum chamber with a simple configuration.
  • the vacuum box is , Two end walls that are separated from each other in the longitudinal direction of the parallel water-cooled tubes and to which the end seal members are respectively attached, and an edge portion having an arcuate curved portion along a part of the parallel water-cooled tubes. A side wall and a side wall sealing member attached along an edge of the side wall.
  • the cross water cooling pipes extending in the direction intersecting with the parallel water cooling pipes, the gaps between adjacent pipes being closed by the fins, and the parallel water cooling pipes,
  • the vacuum box is parallel to the second fin.
  • the present invention is a boiler water-cooled wall welded part inspection apparatus comprising a plurality of parallel water-cooled tubes arranged in parallel and a fin that closes a gap between the parallel water-cooled tubes adjacent by welding, Prepare a welded part inspection device for the boiler water-cooled wall, apply foaming liquid to the inspection target part of the boiler water-cooled wall, form the vacuum chamber by the vacuum box, and use an exhaust device connected to the vacuum box.
  • a method for inspecting a welded portion of a boiler water-cooled wall comprising a step of reducing the pressure in the vacuum chamber and visually checking whether or not the foaming liquid is foamed in the vacuum box.
  • the edge of the end wall of the prepared vacuum box has an arc-shaped edge, and the edge seal member is attached to the arc-shaped edge. It has an arcuate seal. For this reason, even if the unevenness
  • a welded portion inspection apparatus and a welded portion inspection method for a boiler water-cooled wall which can easily and reliably detect a defect penetrating the welded portion in the boiler water-cooled wall in a short time.
  • FIG. 1 It is a figure which shows roughly the structure of the boiler water cooling wall to which the welding part test
  • FIG. 4 by making a part of bottom water cooling wall of a test object into a cross section.
  • FIG. 10 is a three-side view of the vacuum box in FIG. 9.
  • FIG. 1 shows a schematic configuration of the boiler water cooling wall 1 together with the vacuum boxes 100, 200, 300 of the welded portion inspection apparatus of the first to third embodiments.
  • the boiler water cooling wall 1 includes a bottom water cooling wall 2, a ceiling water cooling wall 3, a front water cooling wall 4, and a side water cooling wall 5, and the bottom water cooling wall 2, the front water cooling wall 4 and the ceiling water cooling wall 3. Is connected between the steam drum 7 and the water drum 8.
  • FIG. 2 is a perspective view schematically showing the vacuum box 100 of the welded portion inspection apparatus according to the first embodiment together with a part of the bottom water cooling wall 2.
  • the bottom water cooling wall 2 includes a plurality of water cooling tubes 10 arranged in parallel with a predetermined interval, and fins 12 arranged so as to close gaps between the water cooling tubes 10.
  • the fin 12 is welded to the water-cooled tube 10 along the longitudinal direction of the water-cooled tube 10, and closes the gap between the water-cooled tubes 10 in the longitudinal direction. For this reason, the bottom water cooling wall 2 has irregularities corresponding to the curvature of the outer peripheral surface of the water cooling tube 10.
  • each water-cooled tube 10 is configured by a plurality of straight tubes 10 a that are connected in series via a welded portion 14.
  • the fin 12 is composed of a plurality of plate pieces 12a and 12b, and the water-cooled tube 10 and the plate pieces 12a and 12b and between the plate pieces 12a and 12b are welded to each other by the welding portion 16. ing.
  • the welded portion 16 in FIG. 3 is hatched.
  • FIG. 4 schematically shows the configuration of the welded portion inspection apparatus of the first embodiment.
  • FIG. 5 is an exploded perspective view schematically showing the vacuum box 100.
  • the vacuum box 100 When the vacuum box 100 is brought into contact with the inspection target portion of the bottom water cooling wall 2, it forms an airtight vacuum chamber together with a part of the water cooling tube 10 and a part of the fin 12 constituting the inspection target portion.
  • a pipe 102 leading to a vacuum chamber is connected to the vacuum box 100, and the pipe 102 is branched into, for example, a T shape.
  • An air release valve 104 is provided in the middle of one branch, and the tip of the branch is open to the atmosphere. Therefore, the vacuum chamber and the atmosphere can be communicated or blocked by opening and closing the atmosphere release valve 104.
  • An exhaust valve 106 and an exhaust device inlet valve 108 are provided in the middle of the other branch, and the tip of the other branch is connected to the exhaust device 110.
  • the exhaust device 110 is constituted by, for example, a vacuum pump or an air ejector. When the air release valve 104 is closed and the exhaust valve 106 and the exhaust device inlet valve 108 are open, the air in the vacuum chamber is sent to the outside. And exhaust.
  • the vacuum box 100 includes a pair of side walls 112, a pair of end walls 114, a ceiling wall 116, a gasket 118, a pair of long press plates 120, a pair of short press plates 121, and a plurality of The screw 122, a pair of handles 124, a pressure gauge 126, a pair of side edge seal members 128, and a pair of edge seal members 130.
  • the pressure gauge 126 is composed of, for example, a Bourdon pressure gauge, and displays the pressure in the vacuum chamber.
  • Each of the ceiling wall 116, the side wall 112, and the end wall 114 is made of a thick plate made of acrylic, for example, and has translucency.
  • the ceiling wall 116 has a rectangular planar shape, and a flat square ring-shaped gasket 118 is assigned to the edge of the ceiling wall 116.
  • the gasket 118 is, for example, a rubber packing, and the side wall 112 and the end wall 114 are fixed to the ceiling wall 116 with screws 122 via the gasket 118.
  • the ceiling wall 116 is hermetically coupled to the side wall 112 and the end wall 114. Further, the side wall 112 and the end wall 114 are airtightly coupled to each other via an adhesive. The head of the screw 122 is in contact with the ceiling wall 116 via the long press plate 120 and the short press plate 121, whereby the gasket 118 is uniformly compressed, and the ceiling wall 116, the side wall 112, and the end wall are compressed. 114 is well sealed.
  • the side wall 112 has a rectangular planar shape, and a rectangular parallelepiped side edge sealing member 128 is fixed to the edge (seal edge) of the side wall 112 opposite to the ceiling wall 116 using an adhesive.
  • the side edge seal member 128 has a length and a width corresponding to the size of the seal edge of the side wall 112, and covers the side wall 112 over the entire area. Note that a through hole 131 for attaching the pressure gauge 126 is formed in one side wall 112.
  • FIG. 6 is a diagram schematically showing the front of the vacuum box 100 together with a part of the bottom water cooling wall 2 to be inspected.
  • a through hole 132 to which the pipe 102 is connected is formed in the end wall 114.
  • the end wall 114 includes a rectangular portion 134 having a rectangular planar shape, and a trapezoidal portion 136 integrally connected to one side of the rectangular portion 134 and having a substantially trapezoidal planar shape.
  • the side of the trapezoidal part 136 has a quarter arc shape.
  • the edge (seal edge) 138 of the end wall 114 opposite to the ceiling wall 116 includes a straight edge (first straight edge) 140 formed of a short side of the trapezoidal part 136 and a trapezoidal part 136. It consists of an arcuate edge 142 made up of side edges and a linear edge (second straight edge) 144 formed by a part of one side of the rectangular part 134.
  • An end edge seal member 130 is fixed to the seal edge 138 of the end wall 114 using an adhesive. Note that the edge seal member 130 and the side edge seal member 128 are also hermetically coupled by an adhesive.
  • the edge seal member 130 has a length and a width corresponding to the size of the seal edge 138 of the end wall 114, and covers the seal edge 138 over the entire area. Therefore, the edge seal member 130 includes the first linear seal portion 146 that covers the first linear edge portion 140, the arc-shaped seal portion 148 that covers the arc-shaped edge portion 142, and the second linear edge portion 144. It consists of the 2nd linear seal part 150 which covers.
  • the first linear seal portion 146 has a thickness T1
  • the outer surface of the first linear seal portion 146 has a first linear edge. It is parallel to the part 140.
  • the thickness T1 is 12 mm.
  • the arc-shaped seal portion 148 and the second linear seal portion 150 have the same thickness T2, and the arc-shaped seal portion 148 and the second linear seal portion 148 have the same thickness T2.
  • the outer surface of the bilinear seal 150 is parallel to the arcuate edge 142 and the second linear edge 144.
  • the thickness T2 is 10 mm.
  • the second linear edge portion 144 and the second linear seal portion 150 may be arcuate or omitted if the side edge seal member 128 and the edge seal member 130 can be airtightly coupled. May be. That is, the second linear edge portion 144 and the second linear seal portion 150 are not essential components.
  • the thickness T1 is larger than the thickness T2. More preferably, the thickness T1 is a thickness corresponding to the protrusion height (building thickness) of the welded portion 16 from the fin 12. Greater than T2.
  • the difference (T1 ⁇ T2) between the thickness T1 and the thickness T2 is in the range of 2 mm to 4 mm, and in the present embodiment, the difference (T1 ⁇ T2) is 2 mm.
  • the edge seal member 130 has an outer surface 152 formed of an inclined surface provided so as to cut off the region where the outer surface of the first linear seal portion 146 and the outer surface of the arc-shaped seal portion 148 intersect. It is preferable to have.
  • the side edge seal member 128 and the edge seal member 130 are made of non-breathable foamed rubber, and preferably made of chloroprene rubber.
  • Neoprene (registered trademark) sponge can be used as the side edge sealing member 128 and the edge sealing member 130.
  • the side edge sealing member 128 and the edge sealing member 130 have a hardness in the range of 25 ⁇ 5 degrees.
  • the foaming liquid is applied to the inspection target portion of the boiler water cooling wall 1.
  • the inspection target part is a part of the boiler water cooling wall 1 in which the water cooling pipe 10 extends linearly.
  • the foaming liquid for example, Super Bubble (manufactured by Marktec Corporation) can be used.
  • the vacuum box 100 is brought into contact with the inspection target part.
  • the side wall 112 is along the longitudinal direction of the water-cooled tube 10 and the end wall 114 is the water-cooled tube 10 as shown in FIG.
  • the vacuum box 100 is disposed so as to intersect the longitudinal direction.
  • the side edge seal member 128 contacts the outer surface of the water-cooled tube 10
  • the first linear seal portion 146 of the edge seal member 130 contacts the fin 12, and the arc-shaped seal portion 148 and the second linear shape
  • the vacuum box 100 is disposed so that the seal portion 150 contacts the outer surface of the water-cooled tube 10.
  • the air release valve 104 is closed, the exhaust valve 106 and the exhaust device inlet valve 108 are opened, and the exhaust device 110 is operated. Thereby, the air in the vacuum chamber formed by the vacuum box 100 and the inspection target portion is exhausted to the outside, and the pressure in the vacuum chamber is reduced.
  • the pressure in the vacuum box is reduced to a pressure lower than the atmospheric pressure by 0.015 MPa or more.
  • the pressure is reduced to an inspection pressure of 0.05 MPa to 0.06 MPa, the foaming of the foaming liquid is visually confirmed.
  • the foaming liquid is foamed, it can be seen that defects such as pinholes and cracks penetrating through the welded portion 16 exist in the foamed portion.
  • the ceiling wall 116 has translucency and functions as a window for viewing.
  • the side wall 112 and the end wall 114 can be either light-transmitting or non-light-transmitting.
  • the inspection of the inspection target part is completed.
  • the exhaust valve 106 is closed, and then the air release valve 104 is opened to introduce the outside air into the vacuum chamber. Then, the handle 124 is held, the vacuum box 100 is moved to the next inspection target part, and the above procedure is repeated. If the vacuum box 100 is moved along the longitudinal direction of the water-cooled tube 10 by the length of the vacuum box 100, the inspection can be performed efficiently.
  • the edge of the end wall 114 has the arc-shaped edge 142, and the edge seal member 130 is attached to the arc-shaped edge 142.
  • the arc-shaped seal portion 148 is provided.
  • the welded portion 16 between the water-cooled tube 10 and the fin 12 or the welded portion 16 between the plate pieces 12a of the fin 12 is welded. Even if it protrudes from the periphery of the part 16, the thickness of the first linear seal part 146 brought into contact with the welded part 16 is large. Therefore, the first linear seal part 146 is aligned with the protrusion of the welded part 16. Can be deformed. For this reason, even if the welding part 16 protrudes, the welding part 16 and its periphery are reliably sealed by the 1st linear seal part 146, Therefore An airtight vacuum chamber is formed by the vacuum box 100. FIG.
  • the boiler water-cooled wall welded portion inspection apparatus of the first embodiment described above when the water-cooled tube 10 extends linearly in the inspection target portion of the boiler water-cooled wall 1, a vacuum is formed with a simple configuration.
  • the box 100 can form an airtight vacuum chamber.
  • the boiler water-cooled wall welded portion inspection apparatus according to the second embodiment.
  • the welded portion inspection apparatus according to the second embodiment is used to inspect a portion where the water-cooled tube 10 is bent in an arc shape.
  • the corner portion formed by the front-side water-cooled wall 4 and the bottom-side water-cooled wall 2 is inspected.
  • the welded part inspection apparatus of the second embodiment is different from the welded part inspection apparatus of the first embodiment only in that a vacuum box 200 having a schematic configuration shown in FIG.
  • the water-cooled tube 10 has a curved portion bent in an arc shape in the longitudinal direction, and the side wall 202 of the vacuum box 200 has an edge having an arc-shaped curved portion on the side opposite to the ceiling wall 204.
  • (Seal edge) 206 is provided.
  • the curved portion of the seal edge 206 has an appropriate curvature corresponding to the curved portion of the water-cooled tube 10.
  • a side edge seal member 208 having a certain thickness is attached to the seal edge 206, and the side edge seal member 208 extends along the water-cooled tube 10 having an arcuate curved portion.
  • the end wall 210 of the vacuum box 200 is fixed to the ceiling wall 204 so as to intersect the longitudinal direction of the water-cooled tube 10 when the vacuum box 200 is attached to the inspection target part. For this reason, the end wall 210 is fixed obliquely with respect to the flat ceiling wall 204 according to the curvature of the water-cooled tube 10.
  • the gasket, the long press plate, the short press plate, the screw, and the handle are omitted, but the vacuum box 200 includes these components.
  • FIG. 8 shows the end wall 210 and the edge seal member 212 when viewed in the direction along the arrow VIII in FIG.
  • the end wall 210 includes a rectangular portion 214 and a trapezoidal portion 216
  • the seal edge 218 of the end wall 210 includes a first linear edge portion 220, an arcuate edge portion 222, and a second linear edge portion 224.
  • the edge seal member 212 includes a first linear seal portion 226, an arc-shaped seal portion 228, and a second linear seal portion 230.
  • the edge seal member 212 has an outer surface 232 formed of an inclined surface provided so as to cut off the region where the outer surface of the first linear seal portion 226 and the outer surface of the arc-shaped seal portion 228 intersect.
  • the method of using the boiler water-cooled wall welded portion inspection apparatus of the second embodiment is the same as that of the first embodiment. According to the boiler water-cooled wall welded portion inspection apparatus of the second embodiment, as in the case of the first embodiment, regardless of the irregularities in the inspection target portion of the boiler water-cooled wall 1, Defects can be reliably detected.
  • the boiler water-cooled-wall welded part inspection apparatus of the second embodiment described above even if the welded part 16 protrudes as in the case of the first embodiment, the welded part is caused by the first linear seal part 226. 16 and its surroundings are securely sealed, so that a vacuum box 200 forms an airtight vacuum chamber.
  • the boiler water-cooled wall welded portion inspection apparatus of the second embodiment described above when the water-cooled tube 10 extends in an arc shape in the inspection target portion of the boiler water-cooled wall 1, a vacuum is formed with a simple configuration.
  • the box 200 can form an airtight vacuum chamber.
  • the boiler water-cooled wall welded portion inspection apparatus of the third embodiment is used when inspecting the corners of the water-cooled wall 1 arranged so that the water-cooled tubes 10 intersect as shown in FIG.
  • Such an inspection target part is, for example, an angle formed by the bottom water cooling wall 2 and the side water cooling wall 5 of the boiler water cooling wall 1, the water cooling pipe (parallel water cooling pipe) 10 and the fins 12 of the side water cooling wall 5, A space between the water cooling pipe (cross water cooling pipe) 10 of the bottom water cooling wall 2 is closed by corner fins 302 welded thereto.
  • the boiler water-cooled wall welded portion inspection apparatus of the third embodiment is different from the boiler water-cooled wall welded portion inspection apparatus of the first embodiment only in that a vacuum box 300 is used instead of the vacuum box 100.
  • 10 and 11 are perspective views schematically showing the vacuum box 300.
  • the vacuum box 300 has one end wall 304, a pair of side walls 306, and a ceiling wall 308 for inspecting the corners of the boiler water cooling wall 1.
  • the end wall 304 is arranged so as to intersect with the longitudinal direction of the water cooling tube 10 of the side water cooling wall 5.
  • An edge seal member 312 is attached to an edge (seal edge) 310 of the end wall 304 facing the side water cooling wall 5.
  • the side wall 306 is arrange
  • a side edge seal member 316 is attached to an edge (seal edge) 314 of the side wall 306 facing the side water cooling wall 5.
  • a side edge seal member 320 is attached to an edge (seal edge) 318 of the side wall 306 facing the bottom water cooling wall 2.
  • the ceiling wall 308 is arranged so as to face the side water cooling wall 5.
  • a ceiling edge seal member 324 is attached to an edge (seal edge) 322 of the ceiling wall 308 facing the water cooling pipe 10 of the bottom water cooling wall 2.
  • FIG. 12 is a schematic three-view diagram of the vacuum box 300.
  • the end wall 304 includes a rectangular portion 325 and two trapezoidal portions 326 that are integrally connected to one side of the rectangular portion 325.
  • the seal edge 310 of the end wall 304 has a first straight edge 326, an arcuate edge 328, a second straight edge 330, and a semicircular arcuate edge 332.
  • the edge seal member 312 includes a semicircular arc-shaped seal portion 340 that covers the first linear seal portion 334, the arc-shaped seal portion 336, the second linear seal portion 338, and the arc-shaped edge portion 332.
  • the edge seal member 312 has an outer surface 342 formed of an inclined surface provided so as to cut off the region where the outer surface of the first linear seal portion 334 and the outer surface of the arc-shaped seal portions 336 and 340 intersect.
  • the side wall 306 includes a rectangular portion 343 and a trapezoidal portion 344 integrally connected to one side of the rectangular portion 343.
  • the seal edge 314 of the sidewall 306 has a first straight edge 345, an arcuate edge 346, and a second straight edge 348.
  • the side edge seal member 320 includes a first linear seal portion 350, an arc-shaped seal portion 352, and a second linear seal portion 354.
  • the side edge seal member 320 has an outer surface 356 formed of an inclined surface provided so as to cut off the region where the outer surface of the first linear seal portion 350 and the outer surface of the arc-shaped seal portion 352 intersect. . 10 to 12, the gasket, the long pressing plate, the short pressing plate, the screw, and the handle are omitted, but the vacuum box 300 includes these components.
  • the edge seal member 314 when the vacuum box 300 is installed in the inspection target part, the edge seal member 314 has three water-cooled pipes ( Parallel water-cooled tubes) 10 and fins 12 between these water-cooled tubes 10 are brought into contact with each other. Then, the side edge seal member 316 is brought into contact with the water cooling tubes 10 at both ends of the three water cooling tubes 10, and the side edge sealing member 320 includes the corner fin (second fin) 302 and the bottom water cooling wall. Two water-cooled tubes (cross water-cooled tubes) 10 are brought into contact with each other. Further, the ceiling edge seal member 324 is brought into contact with the water cooling pipe 10 of the bottom water cooling wall 2.
  • the method of using the boiler water-cooled wall welded part inspection apparatus of the third embodiment is the same as that of the first embodiment. According to the boiler water-cooled wall welded portion inspection apparatus of the third embodiment, as in the case of the first embodiment, regardless of the irregularities in the inspection target portion of the boiler water-cooled wall 1, The penetrating defect can be reliably detected.
  • the vacuum box 300 forms a vacuum chamber together with the two walls of the bottom water-cooled wall 2 and the side water-cooled wall 5.
  • the defect which penetrated the welding part 16 between 302 and the water cooling pipe 10 and the fin 12 of the side part water cooling wall 5 can also be detected reliably. That is, in the inspection target portion of the boiler water cooling wall 1, the water cooling pipe (cross water cooling pipe) 10 on the other wall exists in the vicinity of the water cooling pipe (parallel water cooling pipe) 10 on one wall forming the corner of the boiler water cooling wall 1. Even in this case, the vacuum box 300 can form an airtight vacuum chamber with a simple configuration.
  • the present invention is not limited to the first to third embodiments described above, and includes forms obtained by changing each of the first to third embodiments and forms obtained by combining these forms.
  • the end wall 114 and the edge seal member 130 extend over the two water cooling tubes 10, but extend over three or more water cooling tubes 10. Also good. That is, the vacuum box 100 may form a vacuum chamber with three or more water-cooled tubes 10 on both sides of the fin 12.
  • the end wall 114 and the edge seal member 130 are at most 3 It preferably extends over up to two water-cooled tubes 10, and more preferably extends over up to two water-cooled tubes 10.

Abstract

In order to provide a weld inspection device and a weld inspection method for a boiler water-cooled wall, with which breaches penetrating the welds between the water-cooled pipe and the fins in the boiler water-cooled wall and the welds between the fins can be detected quickly, reliably, and in a simple manner, the vacuum chamber (100) of a weld inspection device for a boiler water-cooled wall has: two side walls arranged so as to follow the shape of parallel water-cooled pipes; at least one end wall (114) arranged so as to intersect with the lengthwise direction of the parallel water-cooled pipes (10); side edge seal members for sealing between the edges of the side walls and the parallel water-cooled pipes (10); and end edge seal members (130) for sealing between the edge (138) of the end wall (114) and the parallel water-cooled pipes (10) and the fins (12). The edge (138) of the end wall (114) has a linear edge part (140) that follows the shape of the fins (12), and arch-shaped edge parts (142) that follow the shape of the parallel water-cooled pipes (10), and the end edge seal members (130) have a linear seal part (146) which are attached to the linear edge part (140), and arch-shaped seal parts (148) which are attached to the arch-shaped edge parts (142).

Description

ボイラ水冷壁の溶接部検査装置及び溶接部検査方法Boiler water-cooled wall weld zone inspection device and weld zone inspection method
　本発明は、ボイラ水冷壁の溶接部検査装置及び溶接部検査方法に関する。 The present invention relates to a welded portion inspection apparatus and a welded portion inspection method for boiler water-cooled walls.
　ＪＩＳ　Ｚ２３２９　２００２には、発泡漏れ試験方法の真空法が規定されている。この真空法によれば、真空箱を試験面に気密を存して当接させ、真空箱内を減圧し、試験面に塗布されていた発泡液の発泡の有無によって、試験面における気体の漏れ及び箇所を確認する。
　特許文献１には、この真空法に基づいて復水器の冷却管の漏れを検査可能な復水器の管板の漏洩検査装置が記載されている。漏洩検査装置の２つの当て箱は、平坦な管板に当接され、管板間を延びる冷却管の漏れが検査される。 JIS Z2329 2002 defines a vacuum method as a foam leakage test method. According to this vacuum method, the vacuum box is brought into contact with the test surface in an airtight manner, the inside of the vacuum box is depressurized, and gas leakage on the test surface is determined depending on whether the foaming liquid applied to the test surface is foamed or not. And check the location.
Patent Document 1 discloses a leak inspection device for a condenser tube sheet that can inspect leakage of a condenser cooling pipe based on this vacuum method. The two batting boxes of the leak inspection apparatus are brought into contact with a flat tube sheet, and the leak of the cooling pipe extending between the tube sheets is inspected.
　一方、溶接部の漏洩検査方法として、ＰＴ（浸透探傷）検査が知られている。ＰＴ検査の場合、洗浄液で検査対象部を洗浄した後、検査対象部に浸透液を塗布する。それから、検査対象部の表面の余分な浸透液を拭き取ってから現像液を塗布する。ＰＴ検査によれば、溶接部の欠陥に浸透した浸透液が発色することで、欠陥の有無を目視によって確認することができる。 On the other hand, PT (penetration flaw detection) inspection is known as a leakage inspection method for welds. In the case of PT inspection, the inspection target part is washed with a cleaning liquid, and then a penetrant is applied to the inspection target part. Then, a developer is applied after wiping off excess penetrating liquid on the surface of the inspection target portion. According to the PT inspection, the permeation liquid that has penetrated into the defect in the welded portion is colored, so that the presence or absence of the defect can be visually confirmed.
実開昭６２－１４８９３３号公報Japanese Utility Model Publication No. 62-148933
　ボイラ水冷壁においては、水冷管が並列に配置され、水冷管に長手方向に沿って溶接されたフィンによって水冷管同士の隙間が塞がれている。このためボイラ水冷壁には水冷管の外周面の曲率に応じた凹凸があり、特許文献１の復水器の管板の漏洩検査装置を用いた場合、当て箱をボイラ水冷壁に気密に当接させることができない。従って、特許文献１の復水器の管板の漏洩検査装置を用いたとしても、ボイラ水冷壁の溶接部についてＪＩＳ
Ｚ２３２９ ２００２に規定された真空法を行うことは不可能であった。 In the boiler water cooling wall, the water cooling pipes are arranged in parallel, and the gaps between the water cooling pipes are closed by fins welded to the water cooling pipes in the longitudinal direction. For this reason, the boiler water-cooled wall has irregularities according to the curvature of the outer peripheral surface of the water-cooled pipe, and when the leak inspection device for the condenser tube sheet of Patent Document 1 is used, the batting box is airtightly applied to the boiler water-cooled wall. It cannot be touched. Therefore, even if it uses the leak inspection apparatus of the condenser tube sheet of patent document 1, it is JIS about the welding part of a boiler water cooling wall.
It was impossible to perform the vacuum method specified in Z2329 2002.
　このため従来、ボイラ水冷壁の溶接部の検査は、ＰＴ検査によって行われていた。しかしながら、ＰＴ検査で用いられる薬液には可燃性のものがあり、薬液の取り扱いに注意が必要で検査が煩雑であるという問題があった。また、ＰＴ検査には、工程数が多いため検査に時間がかかるという問題や、貫通した欠陥の検出精度が高くないという問題があった。 Therefore, conventionally, the inspection of the welded portion of the boiler water-cooled wall has been performed by PT inspection. However, some chemical solutions used in PT inspection are flammable, and there is a problem that care is required in handling the chemical solution and the inspection is complicated. In addition, the PT inspection has a problem that it takes a long time due to a large number of processes, and there is a problem that the detection accuracy of the penetrating defect is not high.
　本発明は、上記した事情に鑑みてなされ、その目的とするところは、ボイラ水冷壁における水冷管とフィン、及びフィン同士の溶接部の貫通した欠陥を短時間で容易且つ確実に検出可能である、ボイラ水冷壁の溶接部検査装置及び溶接部検査方法を提供することにある。 The present invention has been made in view of the above-described circumstances, and an object of the present invention is to detect easily and reliably a water-cooled tube and a fin in a boiler water-cooled wall and a defect penetrating a welded portion between the fins in a short time. Another object of the present invention is to provide a welded part inspection apparatus and welded part inspection method for boiler water-cooled walls.
　上記目的を解決するために、本発明は、並列に配置された複数の並列水冷管と、溶接により隣り合う前記並列水冷管同士の隙間を塞ぐフィンとを具備するボイラ水冷壁の溶接部検査装置であって、隣り合う少なくとも２本の前記並列水冷管の一部と前記フィンの一部が検査対象部を構成し、前記検査対象部と共に真空室を形成する真空箱と、前記真空箱に接続された排気装置とを備え、前記真空箱は、透光性を有する窓部と、前記２本の並列水冷管のうち、対応する並列水冷管に沿うようにそれぞれ配置される２つの側壁と、前記並列水冷管の長手方向と交差するように配置される少なくとも１つの端壁と、前記側壁の縁に取り付けられ、前記側壁の縁と前記並列水冷管との間をシールするための側縁シール部材と、前記端壁の縁に取り付けられ、前記端壁の縁と前記並列水冷管及び前記フィンとの間をシールする端縁シール部材とを有し、前記端壁の縁は、前記フィンに沿わされる直線状の縁部と、前記並列水冷管に沿わされる円弧状の縁部とを有し、前記端縁シール部材は、前記直線状の縁部に取り付けられる直線状のシール部と、前記円弧状の縁部に取り付けられる円弧状のシール部とを有することを特徴とするボイラ水冷壁の溶接部検査装置を提供する。 In order to solve the above-described object, the present invention provides a welded portion inspection apparatus for a boiler water-cooled wall, comprising a plurality of parallel water-cooled tubes arranged in parallel and a fin that closes a gap between the adjacent parallel water-cooled tubes by welding. A part of at least two adjacent water-cooled tubes adjacent to each other and a part of the fin constitute an inspection object part, and form a vacuum chamber together with the inspection object part, and connected to the vacuum box The vacuum box includes a window portion having translucency, and two side walls respectively disposed along the corresponding parallel water-cooled tubes among the two parallel water-cooled tubes, At least one end wall arranged to intersect the longitudinal direction of the parallel water-cooled tubes, and a side edge seal attached to the edge of the side wall and sealing between the edge of the side wall and the parallel water-cooled tube Attach to the edge of the member and the end wall And an edge seal member that seals between the edge of the end wall and the parallel water-cooled pipe and the fin, and the edge of the end wall includes a linear edge along the fin; An arcuate edge portion extending along the parallel water-cooled tubes, and the edge seal member is attached to the linear seal portion attached to the linear edge portion and the arcuate edge portion. An apparatus for inspecting a welded portion of a boiler water-cooled wall, comprising an arc-shaped seal portion.
　本発明のボイラ水冷壁の溶接部検査装置によれば、端壁の縁が円弧状の縁部を有し、端縁シール部材が、円弧状の縁部に取り付けられる円弧状のシール部を有する。このため、ボイラ水冷壁の検査対象部に、並列水冷管とフィンによって形成される凹凸が存在しても、真空箱は、検査対象部とともに気密な真空室を形成することができる。このため、この溶接部検査装置によれば、ボイラ水冷壁の検査対象部における凹凸にかかわらずに、検査対象部内の溶接部の貫通した欠陥を短時間で容易且つ確実に検出することができる。 According to the boiler water-cooled wall welded part inspection apparatus of the present invention, the edge of the end wall has an arcuate edge, and the end edge seal member has an arcuate seal attached to the arcuate edge. . For this reason, even if the unevenness | corrugation formed with a parallel water cooling pipe and a fin exists in the test object part of a boiler water cooling wall, a vacuum box can form an airtight vacuum chamber with a test object part. For this reason, according to this welding part test | inspection apparatus, regardless of the unevenness | corrugation in the test object part of a boiler water cooling wall, the defect which the welding part in the test object part penetrated can be detected easily and reliably in a short time.
　好ましくは、前記直線状のシール部の厚さは、前記円弧状のシール部の厚さよりも大である。
　この構成によれば、並列水冷管とフィンとの間の溶接部、或いは、フィンを構成する板片同士の溶接部が該溶接部の周囲より突出していても、溶接部に当接させられる直線状のシール部の厚さが大であるので、直線状のシール部は、溶接部の突出に合わせて変形することができる。このため、溶接部が突出していても、直線状のシール部によって、溶接部及びその周囲が確実にシールされるので、真空箱によって気密な真空室が形成される。 Preferably, the thickness of the linear seal portion is larger than the thickness of the arc-shaped seal portion.
According to this structure, even if the welding part between a parallel water-cooled pipe and a fin or the welding part of the plate pieces which comprise a fin protrudes from the circumference | surroundings of this welding part, the straight line made to contact | abut to a welding part Since the thickness of the seal part is large, the linear seal part can be deformed in accordance with the protrusion of the welded part. For this reason, even if the welded portion protrudes, the welded portion and its periphery are surely sealed by the linear seal portion, so that an airtight vacuum chamber is formed by the vacuum box.
　前記ボイラ水冷壁の検査対象部にて前記並列水冷管の一部が直線状に延びている場合に使用されるボイラ水冷壁の溶接部検査装置にあっては、好ましくは、前記真空箱は、前記並列水冷管の長手方向に相互に離れ、前記端縁シール部材がそれぞれ取り付けられた２つの端壁を有する。
　この構成によれば、ボイラ水冷壁の検査対象部において、並列水冷管が直線状に延びている場合に、簡単な構成にて、真空箱が気密な真空室を形成することができる。 In the boiler water-cooling wall welded part inspection device used when a part of the parallel water-cooled pipes extend linearly in the inspection target part of the boiler water-cooling wall, preferably, the vacuum box is The parallel water-cooled tubes have two end walls that are separated from each other in the longitudinal direction and to which the edge seal members are respectively attached.
According to this configuration, in the inspection target portion of the boiler water cooling wall, when the parallel water cooling tubes extend linearly, the vacuum box can form an airtight vacuum chamber with a simple configuration.
　前記ボイラ水冷壁の検査対象部にて前記並列水冷管が長手方向に円弧状の曲線部を有する場合に使用されるボイラ水冷壁の溶接部検査装置にあっては、好ましくは、前記真空箱は、前記並列水冷管の長手方向に相互に離れ、前記端縁シール部材がそれぞれ取り付けられた２つの端壁と、前記並列水冷管の一部に沿って円弧状の曲線部を持つ縁部を有する側壁と、前記側壁の縁部に沿って取り付けられた側壁シール部材とを有する。
　この構成によれば、ボイラ水冷壁の検査対象部において、並列水冷管が円弧状に延びている場合に、簡単な構成にて、真空箱が気密な真空室を形成することができる。 In the boiler water-cooled wall welded part inspection apparatus used when the parallel water-cooled pipes have arcuate curved portions in the longitudinal direction at the inspection target part of the boiler water-cooled wall, preferably, the vacuum box is , Two end walls that are separated from each other in the longitudinal direction of the parallel water-cooled tubes and to which the end seal members are respectively attached, and an edge portion having an arcuate curved portion along a part of the parallel water-cooled tubes. A side wall and a side wall sealing member attached along an edge of the side wall.
According to this configuration, in the inspection target portion of the boiler water cooling wall, when the parallel water cooling tubes extend in an arc shape, the vacuum box can form an airtight vacuum chamber with a simple configuration.
　前記ボイラ水冷壁の検査対象部にて、それぞれ隣り合う管同士の隙間を前記フィンで閉塞された、前記並列水冷管と交差する方向に延びた交差水冷管、及び、前記並列水冷管と、前記フィンの構成する隙間が、第２のフィンによって閉塞されている場合に使用されるボイラ水冷壁の溶接部検査装置にあっては、好ましくは、前記真空箱は、前記第２のフィンから前記並列水冷管の長手方向に離れ、前記端縁シール部材が取り付けられた１つの端壁と、前記端壁と前記交差水冷壁との間を延びる側壁と、前記端壁及び前記側壁と結合された天井壁と、前記端縁シール部材と前記側縁シール部材とを含み、前記側壁と前記並列水冷管、前記交差水冷管、及び前記第２のフィンとの間をシールするシール部材と、前記天井壁と前記交差水冷管との間をシールするシール部材とを有する。
　この構成によれば、ボイラ水冷壁の検査対象部において、並列水冷管の近傍に交差水管が存在している場合に、簡単な構成にて、真空箱が気密な真空室を形成することができる。 In the inspection target portion of the boiler water cooling wall, the cross water cooling pipes extending in the direction intersecting with the parallel water cooling pipes, the gaps between adjacent pipes being closed by the fins, and the parallel water cooling pipes, In a welded part inspection apparatus for a boiler water-cooled wall used when a gap formed by the fin is closed by a second fin, preferably, the vacuum box is parallel to the second fin. One end wall which is separated in the longitudinal direction of the water cooling pipe and to which the edge seal member is attached, a side wall extending between the end wall and the intersecting water cooling wall, and a ceiling coupled to the end wall and the side wall A sealing member including a wall, the edge sealing member and the side edge sealing member, and sealing between the side wall and the parallel water cooling pipe, the cross water cooling pipe, and the second fin; and the ceiling wall And the cross water cooling pipe And a seal for sealing member.
According to this configuration, in the inspection target portion of the boiler water cooling wall, when a cross water pipe exists in the vicinity of the parallel water cooling pipe, the vacuum box can form an airtight vacuum chamber with a simple configuration. .
　また、本発明は、並列に配置された複数の並列水冷管と、溶接により隣り合う前記並列水冷管同士の隙間を塞ぐフィンとを具備するボイラ水冷壁の溶接部検査装置であって、上記のボイラ水冷壁の溶接部検査装置を用意し、前記ボイラ水冷壁の検査対象部に発泡液を付与し、前記真空箱によって前記真空室を形成し、前記真空箱に接続された排気装置を用いて前記真空室内の圧力を低下させ、前記真空箱内における前記発泡液の発泡の有無を目視によって確認する、工程を備える特徴とするボイラ水冷壁の溶接部検査方法を提供する。 Further, the present invention is a boiler water-cooled wall welded part inspection apparatus comprising a plurality of parallel water-cooled tubes arranged in parallel and a fin that closes a gap between the parallel water-cooled tubes adjacent by welding, Prepare a welded part inspection device for the boiler water-cooled wall, apply foaming liquid to the inspection target part of the boiler water-cooled wall, form the vacuum chamber by the vacuum box, and use an exhaust device connected to the vacuum box There is provided a method for inspecting a welded portion of a boiler water-cooled wall, comprising a step of reducing the pressure in the vacuum chamber and visually checking whether or not the foaming liquid is foamed in the vacuum box.
　本発明のボイラ水冷壁の溶接部検査方法によれば、用意された真空箱の端壁の縁が円弧状の縁部を有し、端縁シール部材が、円弧状の縁部に取り付けられる円弧状のシール部を有する。このため、ボイラ水冷壁の検査対象部に、並列水冷管とフィンによって形成される凹凸が存在しても、真空箱は、検査対象部とともに気密な真空室を形成することができる。このため、この溶接部検査方法によれば、ボイラ水冷壁の検査対象部における凹凸にかかわらずに、検査対象部内の溶接部の貫通した欠陥を短時間で容易且つ確実に検出することができる。 According to the method for inspecting a welded portion of a boiler water-cooled wall according to the present invention, the edge of the end wall of the prepared vacuum box has an arc-shaped edge, and the edge seal member is attached to the arc-shaped edge. It has an arcuate seal. For this reason, even if the unevenness | corrugation formed with a parallel water cooling pipe and a fin exists in the test object part of a boiler water cooling wall, a vacuum box can form an airtight vacuum chamber with a test object part. For this reason, according to this welding part inspection method, the defect which the welding part in the inspection object part penetrated can be detected easily and reliably in a short time regardless of the unevenness in the inspection object part of the boiler water cooling wall.
　本発明によれば、ボイラ水冷壁における溶接部の貫通した欠陥を短時間で容易且つ確実に検出可能である、ボイラ水冷壁の溶接部検査装置及び溶接部検査方法が提供される。 According to the present invention, it is possible to provide a welded portion inspection apparatus and a welded portion inspection method for a boiler water-cooled wall, which can easily and reliably detect a defect penetrating the welded portion in the boiler water-cooled wall in a short time.
本発明の実施形態の溶接部検査装置が適用されるボイラ水冷壁の構成を概略的に示す図である。It is a figure which shows roughly the structure of the boiler water cooling wall to which the welding part test | inspection apparatus of embodiment of this invention is applied. 第１実施形態のボイラ水冷壁の溶接部検査装置を構成する真空箱をボイラ水冷壁の底部水冷壁とともに概略的に示す斜視図である。It is a perspective view which shows roughly the vacuum box which comprises the welding part test | inspection apparatus of the boiler water cooling wall of 1st Embodiment with the bottom part water cooling wall of a boiler water cooling wall. 図２中のボイラ水冷壁の底部水冷壁における水冷管とフィンの溶接構造を説明するための図である。It is a figure for demonstrating the welding structure of the water cooling pipe and fin in the bottom part water cooling wall of the boiler water cooling wall in FIG. 第１実施形態のボイラ水冷壁の溶接部検査装置の構成を概略的に示す図である。It is a figure which shows roughly the structure of the welding part test | inspection apparatus of the boiler water cooling wall of 1st Embodiment. 図４中の真空箱を分解して概略的に示す斜視図である。It is a perspective view which decomposes | disassembles and shows schematically the vacuum box in FIG. 図４中の真空箱を、検査対象の底部水冷壁の一部を断面にして概略的に示す正面図である。It is a front view which shows roughly the vacuum box in FIG. 4 by making a part of bottom water cooling wall of a test object into a cross section. 第２実施形態のボイラ水冷壁の溶接部検査装置を構成する真空箱を概略的に示す側面図である。It is a side view which shows roughly the vacuum box which comprises the welding part test | inspection apparatus of the boiler water cooling wall of 2nd Embodiment. 図７中の矢印ＶＩＩＩの方向でみた端壁及び端縁シール部材を示す図である。It is a figure which shows the end wall and edge seal member seen in the direction of arrow VIII in FIG. 第３実施形態のボイラ水冷壁の溶接部検査装置を構成する真空箱を、検査対象としてのボイラ水冷壁の底部水冷壁と側壁の角とともに概略的に示す斜視図である。It is a perspective view which shows roughly the vacuum box which comprises the welding part test | inspection apparatus of the boiler water cooling wall of 3rd Embodiment with the corner | angular part of the bottom water cooling wall and side wall of the boiler water cooling wall as a test object. 図９中の真空箱を拡大して概略的に示す斜視図である。It is a perspective view which expands and shows schematically the vacuum box in FIG. 図９中の真空箱を拡大して概略的に示す他の方向から見た斜視図である。It is the perspective view seen from the other direction which expands and shows schematically the vacuum box in FIG. 図９中の真空箱の三面図である。FIG. 10 is a three-side view of the vacuum box in FIG. 9.
　以下、本発明の実施形態を図面を参照して詳細に説明する。但し、実施形態に記載されている構成部品の寸法、材質、形状、その相対配置などは特に特定的な記載がない限り、この発明の範囲をそれのみに限定する趣旨ではない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the embodiments are not intended to limit the scope of the present invention to that unless otherwise specified.
　図１は、ボイラ水冷壁１の概略的な構成を、第１乃至第３実施形態の溶接部検査装置の真空箱１００，２００，３００とともに示している。ボイラ水冷壁１は、底部水冷壁２、天井部水冷壁３、正面部水冷壁４、及び、側部水冷壁５を有し、底部水冷壁２、正面部水冷壁４及び天井部水冷壁３を構成する水冷管は、蒸気ドラム７と水ドラム８との間を接続している。 FIG. 1 shows a schematic configuration of the boiler water cooling wall 1 together with the vacuum boxes 100, 200, 300 of the welded portion inspection apparatus of the first to third embodiments. The boiler water cooling wall 1 includes a bottom water cooling wall 2, a ceiling water cooling wall 3, a front water cooling wall 4, and a side water cooling wall 5, and the bottom water cooling wall 2, the front water cooling wall 4 and the ceiling water cooling wall 3. Is connected between the steam drum 7 and the water drum 8.
〔第１実施形態〕
　図２は、第１実施形態の溶接部検査装置の真空箱１００を、底部水冷壁２の一部とともに概略的に示す斜視図である。底部水冷壁２は、所定の間隔を存して並列に配置された複数の水冷管１０と、水冷管１０同士の隙間を塞ぐように配置されたフィン１２とからなる。フィン１２は水冷管１０に対し、水冷管１０の長手方向に沿って溶接され、水冷管１０同士の隙間を長手方向に渡って閉塞している。このため、底部水冷壁２には、水冷管１０の外周面の曲率に応じた凹凸が存在している。 [First Embodiment]
FIG. 2 is a perspective view schematically showing the vacuum box 100 of the welded portion inspection apparatus according to the first embodiment together with a part of the bottom water cooling wall 2. The bottom water cooling wall 2 includes a plurality of water cooling tubes 10 arranged in parallel with a predetermined interval, and fins 12 arranged so as to close gaps between the water cooling tubes 10. The fin 12 is welded to the water-cooled tube 10 along the longitudinal direction of the water-cooled tube 10, and closes the gap between the water-cooled tubes 10 in the longitudinal direction. For this reason, the bottom water cooling wall 2 has irregularities corresponding to the curvature of the outer peripheral surface of the water cooling tube 10.
　より詳しくは、図３に示したように、各水冷管１０は、溶接部１４を介して直列に連なる複数の直管１０ａによって構成されている。また、フィン１２は、複数の板片１２ａ，１２ｂによって構成され、水冷管１０と板片１２ａ，１２ｂとの間、及び、板片１２ａ，１２ｂ同士の間は、溶接部１６によって相互に溶接されている。
　なお、説明のため、図３中の溶接部１６にはハッチングを付した。 More specifically, as shown in FIG. 3, each water-cooled tube 10 is configured by a plurality of straight tubes 10 a that are connected in series via a welded portion 14. The fin 12 is composed of a plurality of plate pieces 12a and 12b, and the water-cooled tube 10 and the plate pieces 12a and 12b and between the plate pieces 12a and 12b are welded to each other by the welding portion 16. ing.
For the sake of explanation, the welded portion 16 in FIG. 3 is hatched.
　図４は、第１実施形態の溶接部検査装置の構成を概略的に示している。また図５は、真空箱１００を分解して概略的に示す斜視図である。
　真空箱１００は、底部水冷壁２の検査対象部に当接させられた場合に、検査対象部を構成する水冷管１０の一部及びフィン１２の一部とともに、気密な真空室を形成する。
　真空箱１００には、真空室に通じる配管１０２が接続され、配管１０２は例えばＴ字に分岐されている。一方の分岐の途中には、大気開放用バルブ１０４が設けられ、分岐の先端は大気中に開口している。従って、大気開放用バルブ１０４を開閉することによって、真空室と大気との間を連通又は遮断することができる。 FIG. 4 schematically shows the configuration of the welded portion inspection apparatus of the first embodiment. FIG. 5 is an exploded perspective view schematically showing the vacuum box 100.
When the vacuum box 100 is brought into contact with the inspection target portion of the bottom water cooling wall 2, it forms an airtight vacuum chamber together with a part of the water cooling tube 10 and a part of the fin 12 constituting the inspection target portion.
A pipe 102 leading to a vacuum chamber is connected to the vacuum box 100, and the pipe 102 is branched into, for example, a T shape. An air release valve 104 is provided in the middle of one branch, and the tip of the branch is open to the atmosphere. Therefore, the vacuum chamber and the atmosphere can be communicated or blocked by opening and closing the atmosphere release valve 104.
　他方の分岐の途中には、排気用バルブ１０６及び排気装置入口バルブ１０８が設けられ、他方の分岐の先端は排気装置１１０に接続されている。
　排気装置１１０は、例えば真空ポンプやエアイジェクタによって構成され、大気開放用バルブ１０４が閉じられ、且つ、排気用バルブ１０６及び排気装置入口バルブ１０８が開いているときに、真空室内の空気を外部へと排気する。 An exhaust valve 106 and an exhaust device inlet valve 108 are provided in the middle of the other branch, and the tip of the other branch is connected to the exhaust device 110.
The exhaust device 110 is constituted by, for example, a vacuum pump or an air ejector. When the air release valve 104 is closed and the exhaust valve 106 and the exhaust device inlet valve 108 are open, the air in the vacuum chamber is sent to the outside. And exhaust.
　真空箱１００は、１対の側壁１１２と、１対の端壁１１４と、天井壁１１６と、ガスケット１１８と、１対の長尺押さえ板１２０と、１対の短尺押さえ板１２１と、複数の螺子１２２と、１対の取っ手１２４と、圧力計１２６と、１対の側縁シール部材１２８と、１対の端縁シール部材１３０とからなる。
　圧力計１２６は、例えば、ブールドン圧力計からなり、真空室内の圧力を表示する。 The vacuum box 100 includes a pair of side walls 112, a pair of end walls 114, a ceiling wall 116, a gasket 118, a pair of long press plates 120, a pair of short press plates 121, and a plurality of The screw 122, a pair of handles 124, a pressure gauge 126, a pair of side edge seal members 128, and a pair of edge seal members 130.
The pressure gauge 126 is composed of, for example, a Bourdon pressure gauge, and displays the pressure in the vacuum chamber.
　天井壁１１６、側壁１１２及び端壁１１４の各々は、例えばアクリル製の肉厚な板からなり、透光性を有する。天井壁１１６は、長方形の平面形状を有し、天井壁１１６の辺縁には、平坦な四角環形状のガスケット１１８が宛がわれている。ガスケット１１８は、例えばゴムパッキンであり、ガスケット１１８を介して、天井壁１１６に対し側壁１１２及び端壁１１４が螺子１２２を用いて固定されている。 Each of the ceiling wall 116, the side wall 112, and the end wall 114 is made of a thick plate made of acrylic, for example, and has translucency. The ceiling wall 116 has a rectangular planar shape, and a flat square ring-shaped gasket 118 is assigned to the edge of the ceiling wall 116. The gasket 118 is, for example, a rubber packing, and the side wall 112 and the end wall 114 are fixed to the ceiling wall 116 with screws 122 via the gasket 118.
　従って、天井壁１１６は、側壁１１２及び端壁１１４と気密に結合されている。また、側壁１１２及び端壁１１４は、接着剤を介して気密に相互に結合されている。
　なお、螺子１２２の頭は、長尺押さえ板１２０及び短尺押さえ板１２１を介して天井壁１１６に当接しており、これによりガスケット１１８は均一に圧縮されて、天井壁１１６と側壁１１２及び端壁１１４との間が良好に気密にシールされる。 Therefore, the ceiling wall 116 is hermetically coupled to the side wall 112 and the end wall 114. Further, the side wall 112 and the end wall 114 are airtightly coupled to each other via an adhesive.
The head of the screw 122 is in contact with the ceiling wall 116 via the long press plate 120 and the short press plate 121, whereby the gasket 118 is uniformly compressed, and the ceiling wall 116, the side wall 112, and the end wall are compressed. 114 is well sealed.
　側壁１１２は、長方形の平面形状を有し、天井壁１１６と反対側の側壁１１２の縁（シール縁）に、直方体形状の側縁シール部材１２８が接着剤を用いて固定されている。側縁シール部材１２８は、側壁１１２のシール縁の大きさに対応する長さ及び幅を有し、側壁１１２を全域に渡って覆っている。なお、一方の側壁１１２には、圧力計１２６を取り付けるための貫通孔１３１が形成されている。 The side wall 112 has a rectangular planar shape, and a rectangular parallelepiped side edge sealing member 128 is fixed to the edge (seal edge) of the side wall 112 opposite to the ceiling wall 116 using an adhesive. The side edge seal member 128 has a length and a width corresponding to the size of the seal edge of the side wall 112, and covers the side wall 112 over the entire area. Note that a through hole 131 for attaching the pressure gauge 126 is formed in one side wall 112.
　図６は、検査対象の底部水冷壁２の一部とともに、真空箱１００の正面を概略的に示す図である。端壁１１４には、配管１０２が接続される貫通孔１３２が形成されている。
　図６に示したように、端壁１１４は長方形の平面形状を有する長方形部１３４と、長方形部１３４の一辺に一体に連なり、略台形の平面形状を有する台形部１３６とからなる。ただし、台形部１３６の側辺は四半円弧形状を有する。 FIG. 6 is a diagram schematically showing the front of the vacuum box 100 together with a part of the bottom water cooling wall 2 to be inspected. A through hole 132 to which the pipe 102 is connected is formed in the end wall 114.
As shown in FIG. 6, the end wall 114 includes a rectangular portion 134 having a rectangular planar shape, and a trapezoidal portion 136 integrally connected to one side of the rectangular portion 134 and having a substantially trapezoidal planar shape. However, the side of the trapezoidal part 136 has a quarter arc shape.
　従って、天井壁１１６とは反対側の端壁１１４の縁（シール縁）１３８は、台形部１３６の短辺からなる直線状の縁部（第１直線状縁部）１４０と、台形部１３６の側辺からなる円弧状の縁部１４２と、長方形部１３４の一辺の一部によって構成される直線状の縁部（第２直線状縁部）１４４とからなる。そして、端壁１１４のシール縁１３８には、端縁シール部材１３０が接着剤を用いて固定されている。なお、端縁シール部材１３０と側縁シール部剤１２８も接着剤によって気密に結合されている。 Therefore, the edge (seal edge) 138 of the end wall 114 opposite to the ceiling wall 116 includes a straight edge (first straight edge) 140 formed of a short side of the trapezoidal part 136 and a trapezoidal part 136. It consists of an arcuate edge 142 made up of side edges and a linear edge (second straight edge) 144 formed by a part of one side of the rectangular part 134. An end edge seal member 130 is fixed to the seal edge 138 of the end wall 114 using an adhesive. Note that the edge seal member 130 and the side edge seal member 128 are also hermetically coupled by an adhesive.
　端縁シール部材１３０は、端壁１１４のシール縁１３８の大きさに対応する長さ及び幅を有し、シール縁１３８を全域に渡って覆っている。従って、端縁シール部材１３０は、第１直線状縁部１４０を覆う第１直線状シール部１４６、円弧状縁部１４２を覆う円弧状のシール部１４８、及び、第２直線状縁部１４４を覆う第２直線状シール部１５０からなる。
　底部水冷壁２の検査対象部に接触していない自由状態にあるとき、第１直線状シール部１４６は厚さＴ１を有し、第１直線状シール部１４６の外面は、第１直線状縁部１４０と平行である。例えば、厚さＴ１は１２ｍｍである。 The edge seal member 130 has a length and a width corresponding to the size of the seal edge 138 of the end wall 114, and covers the seal edge 138 over the entire area. Therefore, the edge seal member 130 includes the first linear seal portion 146 that covers the first linear edge portion 140, the arc-shaped seal portion 148 that covers the arc-shaped edge portion 142, and the second linear edge portion 144. It consists of the 2nd linear seal part 150 which covers.
When the bottom water cooling wall 2 is in a free state not in contact with the inspection target portion, the first linear seal portion 146 has a thickness T1, and the outer surface of the first linear seal portion 146 has a first linear edge. It is parallel to the part 140. For example, the thickness T1 is 12 mm.
　一方、底部水冷壁２の検査対象部に接触していない自由状態にあるとき、円弧状シール部１４８及び第２直線状シール部１５０は同じ厚さＴ２を有し、円弧状シール部１４８及び第２直線状シール部１５０の外面は、円弧状縁部１４２及び第２直線状縁部１４４と平行である。例えば、厚さＴ２は１０ｍｍである。
　なお、第２直線状縁部１４４及び第２直線状シール部１５０は、円弧状であってもよく、或いは、側縁シール部材１２８と端縁シール部材１３０とを気密に結合できるのであれば省略してもよい。つまり、第２直線状縁部１４４及び第２直線状シール部１５０は必須の構成要素ではない。 On the other hand, when the bottom water cooling wall 2 is in a free state not in contact with the inspection target portion, the arc-shaped seal portion 148 and the second linear seal portion 150 have the same thickness T2, and the arc-shaped seal portion 148 and the second linear seal portion 148 have the same thickness T2. The outer surface of the bilinear seal 150 is parallel to the arcuate edge 142 and the second linear edge 144. For example, the thickness T2 is 10 mm.
The second linear edge portion 144 and the second linear seal portion 150 may be arcuate or omitted if the side edge seal member 128 and the edge seal member 130 can be airtightly coupled. May be. That is, the second linear edge portion 144 and the second linear seal portion 150 are not essential components.
　好ましくは、厚さＴ１は厚さＴ２よりも大であり、より好ましくは、厚さＴ１は、フィン１２からの溶接部１６の突出高さ（肉盛厚さ）に相当する分だけ、厚さＴ２よりも大である。好ましい例として、厚さＴ１と厚さＴ２との差（Ｔ１－Ｔ２）は、２ｍｍ以上４ｍｍ以下の範囲内にあり、本実施形態では、差（Ｔ１－Ｔ２）は２ｍｍである。 Preferably, the thickness T1 is larger than the thickness T2. More preferably, the thickness T1 is a thickness corresponding to the protrusion height (building thickness) of the welded portion 16 from the fin 12. Greater than T2. As a preferred example, the difference (T1−T2) between the thickness T1 and the thickness T2 is in the range of 2 mm to 4 mm, and in the present embodiment, the difference (T1−T2) is 2 mm.
　また、好ましくは、端縁シール部材１３０は、第１直線状シール部１４６の外面と円弧状シール部１４８の外面とが交わる領域に、該領域を切り落とすように設けられた傾斜面からなる外面１５２を有するのが好ましい。 Preferably, the edge seal member 130 has an outer surface 152 formed of an inclined surface provided so as to cut off the region where the outer surface of the first linear seal portion 146 and the outer surface of the arc-shaped seal portion 148 intersect. It is preferable to have.
　側縁シール部材１２８及び端縁シール部材１３０は、非通気性の発泡ゴムからなり、好ましくは、クロロプレンゴムからなる。好ましい例として、側縁シール部材１２８及び端縁シール部材１３０として、ネオプレン（登録商標）スポンジを用いることが出来る。
　そして、好ましくは、側縁シール部材１２８及び端縁シール部材１３０は、２５±５度の範囲内の硬度を有する。 The side edge seal member 128 and the edge seal member 130 are made of non-breathable foamed rubber, and preferably made of chloroprene rubber. As a preferred example, Neoprene (registered trademark) sponge can be used as the side edge sealing member 128 and the edge sealing member 130.
Preferably, the side edge sealing member 128 and the edge sealing member 130 have a hardness in the range of 25 ± 5 degrees.
　上述した第１実施形態のボイラ水冷壁の溶接部検査装置を用いた溶接部１６の検査方法について説明する。
　まず、ボイラ水冷壁１の検査対象部に発泡液を塗布する。検査対象部は、水冷管１０が直線状に延びているボイラ水冷壁１の部分である。発泡液としては、例えば、スーパーバブル（マークテック株式会社製）を用いることができる。 A method for inspecting the welded portion 16 using the above-described boiler water-cooled wall welded portion inspection apparatus according to the first embodiment will be described.
First, the foaming liquid is applied to the inspection target portion of the boiler water cooling wall 1. The inspection target part is a part of the boiler water cooling wall 1 in which the water cooling pipe 10 extends linearly. As the foaming liquid, for example, Super Bubble (manufactured by Marktec Corporation) can be used.
　それから、真空箱１００を検査対象部に当接させる。本実施形態では、真空箱１００を検査対象部に当接させる際、図２に示したように、側壁１１２が水冷管１０の長手方向に沿うように、且つ、端壁１１４が水冷管１０の長手方向と交差するように、真空箱１００が配置される。また、この際、側縁シール部材１２８が水冷管１０の外面に当接し、端縁シール部材１３０の第１直線状シール部１４６がフィン１２に当接し、円弧状シール部１４８及び第２直線状シール部１５０が水冷管１０の外面に当接するように、真空箱１００が配置される。 Then, the vacuum box 100 is brought into contact with the inspection target part. In the present embodiment, when the vacuum box 100 is brought into contact with the inspection target portion, the side wall 112 is along the longitudinal direction of the water-cooled tube 10 and the end wall 114 is the water-cooled tube 10 as shown in FIG. The vacuum box 100 is disposed so as to intersect the longitudinal direction. At this time, the side edge seal member 128 contacts the outer surface of the water-cooled tube 10, the first linear seal portion 146 of the edge seal member 130 contacts the fin 12, and the arc-shaped seal portion 148 and the second linear shape The vacuum box 100 is disposed so that the seal portion 150 contacts the outer surface of the water-cooled tube 10.
　真空箱１００が所定位置に配置された後、大気開放用バルブ１０４を閉じ、排気用バルブ１０６及び排気装置入口バルブ１０８を開き、排気装置１１０を作動させる。これにより、真空箱１００と検査対象部によって形成された真空室内の空気が外部に排気され、真空室の圧力が低下する。 After the vacuum box 100 is disposed at a predetermined position, the air release valve 104 is closed, the exhaust valve 106 and the exhaust device inlet valve 108 are opened, and the exhaust device 110 is operated. Thereby, the air in the vacuum chamber formed by the vacuum box 100 and the inspection target portion is exhausted to the outside, and the pressure in the vacuum chamber is reduced.
　ＪＩＳ Ｚ２３２９ ２００２によれば、特に規定がない場合は、真空箱内の圧力は、大気圧より、０．０１５ＭＰａ以上低い圧力まで減圧して行う。本実施形態では、０．０５ＭＰａ～０．０６ＭＰａの検査圧力になるまで圧力を低下させたところで、発泡液の発泡を目視によって確認する。発泡液が発泡している場合、その発泡している部位において、溶接部１６に貫通したピンホールやクラック等の欠陥が存在していることがわかる。
　なお本実施形態では、天井壁１１６は透光性を有し、目視のための窓部としての機能を有する。側壁１１２及び端壁１１４は透光性、非透光性いずれでも構成することができる。 According to JIS Z2329 2002, unless otherwise specified, the pressure in the vacuum box is reduced to a pressure lower than the atmospheric pressure by 0.015 MPa or more. In the present embodiment, when the pressure is reduced to an inspection pressure of 0.05 MPa to 0.06 MPa, the foaming of the foaming liquid is visually confirmed. When the foaming liquid is foamed, it can be seen that defects such as pinholes and cracks penetrating through the welded portion 16 exist in the foamed portion.
In the present embodiment, the ceiling wall 116 has translucency and functions as a window for viewing. The side wall 112 and the end wall 114 can be either light-transmitting or non-light-transmitting.
　目視によって発泡の有無を確認すると、該検査対象部の検査は終了する。次の検査対象部を検査する場合、排気用バルブ１０６を閉じてから、大気開放用バルブ１０４を開いて、真空室内に外気を導入する。それから、取っ手１２４を持って、真空箱１００を次の検査対象部まで移動させ、上記手順を繰り返せばよい。真空箱１００を該真空箱１００の長さ分だけ水冷管１０の長手方向に沿って移動させれば、効率的に検査を行うことができる。 If the presence or absence of foaming is confirmed by visual inspection, the inspection of the inspection target part is completed. When inspecting the next inspection target portion, the exhaust valve 106 is closed, and then the air release valve 104 is opened to introduce the outside air into the vacuum chamber. Then, the handle 124 is held, the vacuum box 100 is moved to the next inspection target part, and the above procedure is repeated. If the vacuum box 100 is moved along the longitudinal direction of the water-cooled tube 10 by the length of the vacuum box 100, the inspection can be performed efficiently.
　上述した第１実施形態のボイラ水冷壁の溶接部検査装置によれば、端壁１１４の縁が円弧状の縁部１４２を有し、端縁シール部材１３０が、円弧状の縁部１４２に取り付けられる円弧状のシール部１４８を有する。このため、ボイラ水冷壁１の検査対象部に、水冷管（並列水冷管）１０とフィン１２によって形成される凹凸が存在しても、真空箱１００は、検査対象部とともに気密な真空室を形成することができる。このため、この溶接部検査装置によれば、ボイラ水冷壁１の検査対象部における凹凸にかかわらずに、検査対象部内の溶接部１６の貫通した欠陥を確実に検出することができる。 According to the boiler water-cooled wall welded part inspection apparatus of the first embodiment described above, the edge of the end wall 114 has the arc-shaped edge 142, and the edge seal member 130 is attached to the arc-shaped edge 142. The arc-shaped seal portion 148 is provided. For this reason, even if the inspection target portion of the boiler water cooling wall 1 has irregularities formed by the water cooling pipes (parallel water cooling tubes) 10 and the fins 12, the vacuum box 100 forms an airtight vacuum chamber together with the inspection target portion. can do. For this reason, according to this welding part test | inspection apparatus, regardless of the unevenness | corrugation in the test object part of the boiler water cooling wall 1, the defect which the welding part 16 in the test object part penetrated can be detected reliably.
　また上述した第１実施形態のボイラ水冷壁の溶接部検査装置によれば、水冷管１０とフィン１２との間の溶接部１６、或いは、フィン１２の板片１２ａ同士の溶接部１６が該溶接部１６の周囲より突出していても、溶接部１６に当接させられる第１直線状シール部１４６の厚さが大であるので、第１直線状シール部１４６は、溶接部１６の突出に合わせて変形することができる。このため、溶接部１６が突出していても、第１直線状シール部１４６によって、溶接部１６及びその周囲が確実にシールされるので、真空箱１００によって気密な真空室が形成される。 Further, according to the boiler water-cooled wall welded portion inspection apparatus of the first embodiment described above, the welded portion 16 between the water-cooled tube 10 and the fin 12 or the welded portion 16 between the plate pieces 12a of the fin 12 is welded. Even if it protrudes from the periphery of the part 16, the thickness of the first linear seal part 146 brought into contact with the welded part 16 is large. Therefore, the first linear seal part 146 is aligned with the protrusion of the welded part 16. Can be deformed. For this reason, even if the welding part 16 protrudes, the welding part 16 and its periphery are reliably sealed by the 1st linear seal part 146, Therefore An airtight vacuum chamber is formed by the vacuum box 100. FIG.
　更に上述した第１実施形態のボイラ水冷壁の溶接部検査装置によれば、ボイラ水冷壁１の検査対象部において、水冷管１０が直線状に延びている場合に、簡単な構成にて、真空箱１００が気密な真空室を形成することができる。 Furthermore, according to the boiler water-cooled wall welded portion inspection apparatus of the first embodiment described above, when the water-cooled tube 10 extends linearly in the inspection target portion of the boiler water-cooled wall 1, a vacuum is formed with a simple configuration. The box 100 can form an airtight vacuum chamber.
〔第２実施形態〕
　以下、第２実施形態のボイラ水冷壁の溶接部検査装置について説明する。なお、第２実施形態の構成のうち、第１実施形態の構成と類似又は同一のものについては、同一の名称又は符号を付して説明を簡略化又は省略する。
　第２実施形態の溶接部検査装置は、水冷管１０が円弧状に曲がっている部分を検査するのに用いられ、例えば、正面部水冷壁４と底部水冷壁２とがなす角部を検査するのに用いられる。そのために、第２実施形態の溶接部検査装置は、真空箱１００に代えて、図７に概略的な構成を示す真空箱２００を用いる点のみ、第１実施形態の溶接部検査装置と異なる。 [Second Embodiment]
Hereinafter, the boiler water-cooled wall welded portion inspection apparatus according to the second embodiment will be described. Note that, among the configurations of the second embodiment, those similar or identical to the configurations of the first embodiment are denoted by the same names or symbols, and description thereof is simplified or omitted.
The welded portion inspection apparatus according to the second embodiment is used to inspect a portion where the water-cooled tube 10 is bent in an arc shape. For example, the corner portion formed by the front-side water-cooled wall 4 and the bottom-side water-cooled wall 2 is inspected. Used for Therefore, the welded part inspection apparatus of the second embodiment is different from the welded part inspection apparatus of the first embodiment only in that a vacuum box 200 having a schematic configuration shown in FIG.
　図７に示したように、水冷管１０は長手方向に円弧状に曲げられた曲線部を有し、真空箱２００の側壁２０２は、天井壁２０４と反対側に円弧状の曲線部を持つ縁（シール縁）２０６を有する。シール縁２０６の曲線部は、水冷管１０の曲線部に対応した適当な曲率を有する。シール縁２０６には一定の厚さの側縁シール部材２０８が取り付けられ、側縁シール部材２０８は、円弧状の曲線部を有する水冷管１０に沿うように延びている。 As shown in FIG. 7, the water-cooled tube 10 has a curved portion bent in an arc shape in the longitudinal direction, and the side wall 202 of the vacuum box 200 has an edge having an arc-shaped curved portion on the side opposite to the ceiling wall 204. (Seal edge) 206 is provided. The curved portion of the seal edge 206 has an appropriate curvature corresponding to the curved portion of the water-cooled tube 10. A side edge seal member 208 having a certain thickness is attached to the seal edge 206, and the side edge seal member 208 extends along the water-cooled tube 10 having an arcuate curved portion.
　真空箱２００の端壁２１０は、真空箱２００が検査対象部に取り付けられたときに、水冷管１０の長手方向と交差するように天井壁２０４に固定されている。このため端壁２１０は、平坦な天井壁２０４に対して、水冷管１０の曲率に応じて斜めに固定されている。
　なお、図７において、ガスケット、長尺押さえ板、短尺押さえ板、螺子及び取っ手が省略されているが、真空箱２００はこれらの構成要素を有する。 The end wall 210 of the vacuum box 200 is fixed to the ceiling wall 204 so as to intersect the longitudinal direction of the water-cooled tube 10 when the vacuum box 200 is attached to the inspection target part. For this reason, the end wall 210 is fixed obliquely with respect to the flat ceiling wall 204 according to the curvature of the water-cooled tube 10.
In FIG. 7, the gasket, the long press plate, the short press plate, the screw, and the handle are omitted, but the vacuum box 200 includes these components.
　図８は、図７中の矢印ＶＩＩＩに沿う方向でみたときの端壁２１０及び端縁シール部材２１２を示している。
　端壁２１０は、長方形部２１４及び台形部２１６からなり、端壁２１０のシール縁２１８は、第１直線状縁部２２０、円弧状縁部２２２及び第２直線状縁部２２４からなる。そして、端縁シール部材２１２は、第１直線状シール部２２６、円弧状シール部２２８及び第２直線状シール部２３０からなる。好ましくは、端縁シール部材２１２は、第１直線状シール部２２６の外面と円弧状シール部２２８の外面が交わる領域に、該領域を切り落とすように設けられた傾斜面からなる外面２３２を有する。 FIG. 8 shows the end wall 210 and the edge seal member 212 when viewed in the direction along the arrow VIII in FIG.
The end wall 210 includes a rectangular portion 214 and a trapezoidal portion 216, and the seal edge 218 of the end wall 210 includes a first linear edge portion 220, an arcuate edge portion 222, and a second linear edge portion 224. The edge seal member 212 includes a first linear seal portion 226, an arc-shaped seal portion 228, and a second linear seal portion 230. Preferably, the edge seal member 212 has an outer surface 232 formed of an inclined surface provided so as to cut off the region where the outer surface of the first linear seal portion 226 and the outer surface of the arc-shaped seal portion 228 intersect.
　第２実施形態のボイラ水冷壁の溶接部検査装置の使用方法は、第１実施形態の場合と同じである。
　第２実施形態のボイラ水冷壁の溶接部検査装置によれば、第１実施形態の場合と同様に、ボイラ水冷壁１の検査対象部における凹凸にかかわらずに、検査対象部内の溶接部１６の欠陥を確実に検出することができる。 The method of using the boiler water-cooled wall welded portion inspection apparatus of the second embodiment is the same as that of the first embodiment.
According to the boiler water-cooled wall welded portion inspection apparatus of the second embodiment, as in the case of the first embodiment, regardless of the irregularities in the inspection target portion of the boiler water-cooled wall 1, Defects can be reliably detected.
　また上述した第２実施形態のボイラ水冷壁の溶接部検査装置によれば、第１実施形態の場合と同様に、溶接部１６が突出していても、第１直線状シール部２２６によって、溶接部１６及びその周囲が確実にシールされるので、真空箱２００によって気密な真空室が形成される。 Moreover, according to the boiler water-cooled-wall welded part inspection apparatus of the second embodiment described above, even if the welded part 16 protrudes as in the case of the first embodiment, the welded part is caused by the first linear seal part 226. 16 and its surroundings are securely sealed, so that a vacuum box 200 forms an airtight vacuum chamber.
　更に上述した第２実施形態のボイラ水冷壁の溶接部検査装置によれば、ボイラ水冷壁１の検査対象部において、水冷管１０が円弧状に延びている場合に、簡単な構成にて、真空箱２００が気密な真空室を形成することができる。 Furthermore, according to the boiler water-cooled wall welded portion inspection apparatus of the second embodiment described above, when the water-cooled tube 10 extends in an arc shape in the inspection target portion of the boiler water-cooled wall 1, a vacuum is formed with a simple configuration. The box 200 can form an airtight vacuum chamber.
〔第３実施形態〕
　以下、第３実施形態のボイラ水冷壁の溶接部検査装置について説明する。なお、第３実施形態の構成のうち、第１実施形態及び第２実施形態の構成と類似又は同一のものについては、同一の名称又は符号を付して説明を簡略化又は省略する。 [Third Embodiment]
Hereinafter, the boiler water-cooled wall welded portion inspection apparatus according to the third embodiment will be described. In addition, about the structure of 3rd Embodiment, the thing similar or the same as the structure of 1st Embodiment and 2nd Embodiment, the same name or code | symbol is attached | subjected, and description is simplified or abbreviate | omitted.
　第３実施形態のボイラ水冷壁の溶接部検査装置は、図９に示したように、水冷管１０が交差するように配置されている水冷壁１の角を検査する場合に用いられる。このような検査対象部は、例えば、ボイラ水冷壁１の底部水冷壁２と側部水冷壁５がなす角であり、側部水冷壁５の水冷管（並列水冷管）１０及びフィン１２と、底部水冷壁２の水冷管（交差水冷管）１０との間が、これらに溶接された角用のフィン３０２によって塞がれている。 The boiler water-cooled wall welded portion inspection apparatus of the third embodiment is used when inspecting the corners of the water-cooled wall 1 arranged so that the water-cooled tubes 10 intersect as shown in FIG. Such an inspection target part is, for example, an angle formed by the bottom water cooling wall 2 and the side water cooling wall 5 of the boiler water cooling wall 1, the water cooling pipe (parallel water cooling pipe) 10 and the fins 12 of the side water cooling wall 5, A space between the water cooling pipe (cross water cooling pipe) 10 of the bottom water cooling wall 2 is closed by corner fins 302 welded thereto.
　このため、第３実施形態のボイラ水冷壁の溶接部検査装置は、真空箱１００に代えて真空箱３００を用いる点においてのみ、第１実施形態のボイラ水冷壁の溶接部検査装置と異なる。
　図１０及び図１１は、真空箱３００を概略的に示す斜視図である。真空箱３００は、ボイラ水冷壁１の角を検査するために、１つの端壁３０４と、１対の側壁３０６と、天井壁３０８とを有する。 For this reason, the boiler water-cooled wall welded portion inspection apparatus of the third embodiment is different from the boiler water-cooled wall welded portion inspection apparatus of the first embodiment only in that a vacuum box 300 is used instead of the vacuum box 100.
10 and 11 are perspective views schematically showing the vacuum box 300. FIG. The vacuum box 300 has one end wall 304, a pair of side walls 306, and a ceiling wall 308 for inspecting the corners of the boiler water cooling wall 1.
　真空箱３００が検査対象部に設置されたとき、端壁３０４は、側部水冷壁５の水冷管１０の長手方向と交差するように配置される。側部水冷壁５と対向する端壁３０４の縁（シール縁）３１０には、端縁シール部材３１２が取り付けられている。 When the vacuum box 300 is installed in the inspection target part, the end wall 304 is arranged so as to intersect with the longitudinal direction of the water cooling tube 10 of the side water cooling wall 5. An edge seal member 312 is attached to an edge (seal edge) 310 of the end wall 304 facing the side water cooling wall 5.
　そして、真空箱３００が検査対象部に設置されたとき、側壁３０６は、側部水冷壁５の水冷管１０の長手方向に沿うように配置される。側部水冷壁５と対向する側壁３０６の縁（シール縁）３１４には、側縁シール部材３１６が取り付けられている。一方、底部水冷壁２と対向する側壁３０６の縁（シール縁）３１８には、側縁シール部材３２０が取り付けられている。 And when the vacuum box 300 is installed in a test object part, the side wall 306 is arrange | positioned so that the longitudinal direction of the water cooling pipe 10 of the side part water cooling wall 5 may be followed. A side edge seal member 316 is attached to an edge (seal edge) 314 of the side wall 306 facing the side water cooling wall 5. On the other hand, a side edge seal member 320 is attached to an edge (seal edge) 318 of the side wall 306 facing the bottom water cooling wall 2.
　また、真空箱３００が検査対象部に設置されたとき、天井壁３０８は、側部水冷壁５と対向するように配置される。底部水冷壁２の水冷管１０と対向する天井壁３０８の縁（シール縁）３２２には、天井縁シール部材３２４が取り付けられている。 Further, when the vacuum box 300 is installed in the inspection target part, the ceiling wall 308 is arranged so as to face the side water cooling wall 5. A ceiling edge seal member 324 is attached to an edge (seal edge) 322 of the ceiling wall 308 facing the water cooling pipe 10 of the bottom water cooling wall 2.
　図１２は、真空箱３００の概略的な三面図である。端壁３０４は、長方形部３２５と、長方形部３２５の一辺に一体に連なる２つの台形部３２６とからなる。端壁３０４のシール縁３１０は、第１直線状縁部３２６、円弧状縁部３２８、第２直線状縁部３３０、及び、半円弧状の円弧状縁部３３２を有する。そして、端縁シール部材３１２は、第１直線状シール部３３４、円弧状シール部３３６、第２直線状シール部３３８、及び、円弧状縁部３３２を覆う半円弧状の円弧状シール部３４０を有する。
　好ましくは、端縁シール部材３１２は、第１直線状シール部３３４の外面と円弧状シール部３３６，３４０の外面とが交わる領域に、該領域を切り落とすように設けられた傾斜面からなる外面３４２を有する。 FIG. 12 is a schematic three-view diagram of the vacuum box 300. The end wall 304 includes a rectangular portion 325 and two trapezoidal portions 326 that are integrally connected to one side of the rectangular portion 325. The seal edge 310 of the end wall 304 has a first straight edge 326, an arcuate edge 328, a second straight edge 330, and a semicircular arcuate edge 332. The edge seal member 312 includes a semicircular arc-shaped seal portion 340 that covers the first linear seal portion 334, the arc-shaped seal portion 336, the second linear seal portion 338, and the arc-shaped edge portion 332. Have.
Preferably, the edge seal member 312 has an outer surface 342 formed of an inclined surface provided so as to cut off the region where the outer surface of the first linear seal portion 334 and the outer surface of the arc-shaped seal portions 336 and 340 intersect. Have
　一方、側壁３０６は、長方形部３４３と長方形部３４３の一辺に一体に連なる台形部３４４とからなる。側壁３０６のシール縁３１４は、第１直線状縁部３４５、円弧状縁部３４６、及び、第２直線状縁部３４８を有する。側縁シール部材３２０は、第１直線状シール部３５０、円弧状シール部３５２及び第２直線状シール部３５４を有する。 On the other hand, the side wall 306 includes a rectangular portion 343 and a trapezoidal portion 344 integrally connected to one side of the rectangular portion 343. The seal edge 314 of the sidewall 306 has a first straight edge 345, an arcuate edge 346, and a second straight edge 348. The side edge seal member 320 includes a first linear seal portion 350, an arc-shaped seal portion 352, and a second linear seal portion 354.
　好ましくは、側縁シール部材３２０は、第１直線状シール部３５０の外面と円弧状シール部３５２の外面とが交わる領域に、該領域を切り落とすように設けられた傾斜面からなる外面３５６を有する。
　なお、図１０乃至図１２において、ガスケット、長尺押さえ板、短尺押さえ板、螺子及び取っ手が省略されているが、真空箱３００はこれらの構成要素を有する。 Preferably, the side edge seal member 320 has an outer surface 356 formed of an inclined surface provided so as to cut off the region where the outer surface of the first linear seal portion 350 and the outer surface of the arc-shaped seal portion 352 intersect. .
10 to 12, the gasket, the long pressing plate, the short pressing plate, the screw, and the handle are omitted, but the vacuum box 300 includes these components.
　第３実施形態の溶接部検査装置の真空箱３００によれば、真空箱３００が検査対象部に設置されたときに、端縁シール部材３１４が、側部水冷壁５の三本の水冷管（並列水冷管）１０及びこれら水冷管１０の間のフィン１２に当接させられる。そして、側縁シール部材３１６が、三本の水冷管１０のうち両端の水冷管１０に当接させられ、側縁シール部材３２０が、角用のフィン（第２のフィン）３０２及び底部水冷壁２の水冷管（交差水冷管）１０に当接させられる。更に、天井縁シール部材３２４が底部水冷壁２の水冷管１０に当接させられる。 According to the vacuum box 300 of the welded part inspection apparatus of the third embodiment, when the vacuum box 300 is installed in the inspection target part, the edge seal member 314 has three water-cooled pipes ( Parallel water-cooled tubes) 10 and fins 12 between these water-cooled tubes 10 are brought into contact with each other. Then, the side edge seal member 316 is brought into contact with the water cooling tubes 10 at both ends of the three water cooling tubes 10, and the side edge sealing member 320 includes the corner fin (second fin) 302 and the bottom water cooling wall. Two water-cooled tubes (cross water-cooled tubes) 10 are brought into contact with each other. Further, the ceiling edge seal member 324 is brought into contact with the water cooling pipe 10 of the bottom water cooling wall 2.
　第３実施形態のボイラ水冷壁の溶接部検査装置の使用方法は、第１実施形態の場合と同じである。
　第３実施形態のボイラ水冷壁の溶接部検査装置によれば、第１実施形態の場合と同様に、ボイラ水冷壁１の検査対象部における凹凸にかかわらずに、検査対象部内の溶接部１６の貫通した欠陥を確実に検出することができる。 The method of using the boiler water-cooled wall welded part inspection apparatus of the third embodiment is the same as that of the first embodiment.
According to the boiler water-cooled wall welded portion inspection apparatus of the third embodiment, as in the case of the first embodiment, regardless of the irregularities in the inspection target portion of the boiler water-cooled wall 1, The penetrating defect can be reliably detected.
　また上述した第３実施形態のボイラ水冷壁の溶接部検査装置によれば、第１実施形態の場合と同様に、溶接部１６が突出していても、第１直線状シール部３２４，３５０によって、溶接部１６及びその周囲が確実にシールされるので、真空箱３００によって気密な真空室が形成される。 Moreover, according to the boiler water-cooled wall welded portion inspection apparatus of the third embodiment described above, as in the case of the first embodiment, even if the welded portion 16 protrudes, the first linear seal portions 324 and 350 Since the welded portion 16 and its periphery are securely sealed, an airtight vacuum chamber is formed by the vacuum box 300.
　更に上述した第３実施形態のボイラ水冷壁の溶接部検査装置によれば、真空箱３００が底部水冷壁２及び側部水冷壁５という二つの壁とともに真空室を形成するので、角用のフィン３０２と側部水冷壁５の水冷管１０及びフィン１２との間の溶接部１６の貫通した欠陥も確実に検出することができる。つまり、ボイラ水冷壁１の検査対象部において、ボイラ水冷壁１の角をなす一方の壁の水冷管（並列水冷管）１０の近傍に、他の壁の水冷管（交差水冷管）１０が存在している場合でも、簡単な構成にて、真空箱３００が気密な真空室を形成することができる。 Further, according to the boiler water-cooled wall welded portion inspection apparatus of the third embodiment described above, the vacuum box 300 forms a vacuum chamber together with the two walls of the bottom water-cooled wall 2 and the side water-cooled wall 5. The defect which penetrated the welding part 16 between 302 and the water cooling pipe 10 and the fin 12 of the side part water cooling wall 5 can also be detected reliably. That is, in the inspection target portion of the boiler water cooling wall 1, the water cooling pipe (cross water cooling pipe) 10 on the other wall exists in the vicinity of the water cooling pipe (parallel water cooling pipe) 10 on one wall forming the corner of the boiler water cooling wall 1. Even in this case, the vacuum box 300 can form an airtight vacuum chamber with a simple configuration.
　本発明は、上述した第１乃至第３実施形態に限定されることはなく、第１乃至第３実施形態の各々に変更を加えた形態や、これら形態を組み合わせた形態も含む。
　例えば、第１実施形態に係る真空箱１００では、端壁１１４及び端縁シール部材１３０が２本の水冷管１０に渡って延びていたが、３本以上の水冷管１０に渡って延びていてもよい。つまり、真空箱１００は、フィン１２の両隣の３本以上の水冷管１０とともに真空室を形成してもよい。 The present invention is not limited to the first to third embodiments described above, and includes forms obtained by changing each of the first to third embodiments and forms obtained by combining these forms.
For example, in the vacuum box 100 according to the first embodiment, the end wall 114 and the edge seal member 130 extend over the two water cooling tubes 10, but extend over three or more water cooling tubes 10. Also good. That is, the vacuum box 100 may form a vacuum chamber with three or more water-cooled tubes 10 on both sides of the fin 12.
　ただし、水冷管１０やフィン１２の寸法公差や歪み等によって、端壁１１４及び端縁シール部材１３０が長くなるほどシール性が低下するので、端壁１１４及び端縁シール部材１３０は、多くても３本までの水冷管１０に渡って延びているのが好ましく、２本までの水冷管１０に渡って延びているのがより好ましい。 However, since the sealing performance decreases as the end wall 114 and the edge seal member 130 become longer due to the dimensional tolerance or distortion of the water-cooled tube 10 or the fin 12, the end wall 114 and the edge seal member 130 are at most 3 It preferably extends over up to two water-cooled tubes 10, and more preferably extends over up to two water-cooled tubes 10.

Claims (6)

  1. 　並列に配置された複数の並列水冷管と、溶接により隣り合う前記並列水冷管同士の隙間を塞ぐフィンとを具備するボイラ水冷壁の溶接部検査装置であって、
    　隣り合う少なくとも２本の前記並列水冷管の一部と前記フィンの一部が検査対象部を構成し、前記検査対象部と共に真空室を形成する真空箱と、
    　前記真空箱に接続された排気装置とを備え、
    　前記真空箱は、
    　透光性を有する窓部と、
    　前記２本の並列水冷管のうち、対応する並列水冷管に沿うようにそれぞれ配置される２つの側壁と、
    　前記並列水冷管の長手方向と交差するように配置される少なくとも１つの端壁と、
    　前記側壁の縁に取り付けられ、前記側壁の縁と前記並列水冷管との間をシールするための側縁シール部材と、
    　前記端壁の縁に取り付けられ、前記端壁の縁と前記並列水冷管及び前記フィンとの間をシールする端縁シール部材とを有し、
    　前記端壁の縁は、
    　前記フィンに沿わされる直線状の縁部と、
    　前記並列水冷管に沿わされる円弧状の縁部とを有し、
    　前記端縁シール部材は、
    　前記直線状の縁部に取り付けられる直線状のシール部と、
    　前記円弧状の縁部に取り付けられる円弧状のシール部とを有する
    ことを特徴とするボイラ水冷壁の溶接部検査装置。     A boiler water-cooled wall welded portion inspection apparatus comprising a plurality of parallel water-cooled tubes arranged in parallel and a fin that closes a gap between the parallel water-cooled tubes adjacent by welding,
    A vacuum box in which a part of at least two adjacent water-cooled tubes and a part of the fin constitute an inspection object part and form a vacuum chamber together with the inspection object part;
    An exhaust device connected to the vacuum box,
    The vacuum box is
    A translucent window,
    Of the two parallel water-cooled tubes, two side walls respectively disposed along the corresponding parallel water-cooled tubes;
    At least one end wall arranged to intersect the longitudinal direction of the parallel water-cooled tubes;
    A side edge seal member attached to the edge of the side wall for sealing between the side wall edge and the parallel water-cooled pipe;
    An edge seal member attached to an edge of the end wall and sealing between the edge of the end wall and the parallel water-cooled pipe and the fin;
    The edge of the end wall is
    Linear edges along the fins;
    Having an arcuate edge along the parallel water-cooled tubes;
    The edge seal member is
    A linear seal portion attached to the linear edge;
    An apparatus for inspecting a welded portion of a boiler water-cooled wall, comprising: an arc-shaped seal portion attached to the arc-shaped edge portion.
  2. 　前記直線状のシール部の厚さは、前記円弧状のシール部の厚さよりも大である
    ことを特徴とする請求項１に記載のボイラ水冷壁の溶接部検査装置。     2. The apparatus for inspecting a welded portion of a boiler water-cooled wall according to claim 1, wherein the thickness of the linear seal portion is larger than the thickness of the arc-shaped seal portion.
  3. 　前記ボイラ水冷壁の検査対象部にて前記並列水冷管が直線状に延びている場合に使用され、
    　前記真空箱は、前記並列水冷管の長手方向に相互に離れ、前記端縁シール部材がそれぞれ取り付けられた２つの端壁を有する
    ことを特徴とする請求項１又は２に記載のボイラ水冷壁の溶接部検査装置。     Used when the parallel water cooling pipes extend in a straight line at the inspection target part of the boiler water cooling wall,
    3. The boiler water cooling wall according to claim 1, wherein the vacuum box has two end walls that are separated from each other in a longitudinal direction of the parallel water cooling tubes and to which the end edge sealing members are respectively attached. Weld inspection equipment.
  4. 　前記ボイラ水冷壁の検査対象部にて前記並列水冷管が長手方向に円弧状の曲線部を有する場合に使用され、
    　前記真空箱は、
    　前記並列水冷管の長手方向に相互に離れ、前記端縁シール部材がそれぞれ取り付けられた２つの端壁と、
    　前記並列水冷管に沿って円弧状の曲線部を持つ縁部を有する側壁と、
    　前記側壁の縁部に沿って取り付けられた側縁シール部材とを有する
    ことを特徴とする請求項１又は２に記載のボイラ水冷壁の溶接部検査装置。     Used when the parallel water-cooled pipe has an arcuate curved portion in the longitudinal direction at the inspection target portion of the boiler water-cooled wall,
    The vacuum box is
    Two end walls that are spaced apart from each other in the longitudinal direction of the parallel water-cooled tubes and to which the edge seal members are respectively attached;
    A side wall having an edge with an arcuate curve along the parallel water-cooled tubes;
    It has a side edge sealing member attached along the edge part of the said side wall, The welding part test | inspection apparatus of the boiler water cooling wall of Claim 1 or 2 characterized by the above-mentioned.
  5. 　それぞれ隣り合う管同士の隙間を前記フィンで閉塞された、前記並列水冷管と交差する方向に延びた交差水冷管、及び、前記並列水冷管と、前記フィンの構成する隙間が、第２のフィンによって閉塞されている場合に使用され、
    　前記真空箱は、
    　前記第２のフィンから前記並列水冷管の長手方向に離れ、前記端縁シール部材が取り付けられた１つの端壁と、
    　前記端壁と前記交差水冷壁との間を延びる側壁と、
    　前記端壁及び前記側壁と結合された天井壁と、
    　前記端縁シール部材と前記側縁シール部材とを含み、前記側壁と前記並列水冷管、前記交差水冷管、及び前記第２のフィンとの間をシールするシール部材と、
    　前記天井壁と前記交差水冷管との間をシールするシール部材とを有する
    ことを特徴とする請求項１又は２に記載のボイラ水冷壁の溶接部検査装置。     Crossing water cooling pipes extending in a direction intersecting with the parallel water cooling pipes, in which gaps between adjacent pipes are closed by the fins, and the gaps formed by the parallel water cooling pipes and the fins are second fins. Used when blocked by
    The vacuum box is
    One end wall that is spaced apart from the second fin in the longitudinal direction of the parallel water-cooled tubes and to which the edge seal member is attached;
    A side wall extending between the end wall and the intersecting water cooling wall;
    A ceiling wall coupled to the end wall and the side wall;
    A seal member that includes the edge seal member and the side edge seal member, and seals between the side wall and the parallel water-cooled pipe, the cross water-cooled pipe, and the second fin;
    The boiler water-cooled wall welded portion inspection apparatus according to claim 1, further comprising a seal member that seals between the ceiling wall and the intersecting water-cooled pipe.
  6. 　並列に配置された複数の並列水冷管と、溶接により隣り合う前記並列水冷管同士の隙間を塞ぐフィンとを具備するボイラ水冷壁の溶接部検査装置であって、
    　請求項１乃至５の何れか一項に記載のボイラ水冷壁の溶接部検査装置を用意し、
    　前記ボイラ水冷壁の検査対象部に発泡液を付与し、
    　前記真空箱によって前記真空室を形成し、
    　前記真空箱に接続された排気装置を用いて前記真空室内の圧力を低下させ、
    　前記真空箱内における前記発泡液の発泡の有無を目視によって確認する、
    工程を備える特徴とするボイラ水冷壁の溶接部検査方法。     A boiler water-cooled wall welded portion inspection apparatus comprising a plurality of parallel water-cooled tubes arranged in parallel and a fin that closes a gap between the parallel water-cooled tubes adjacent by welding,
    A boiler water-cooled wall weldment inspection device according to any one of claims 1 to 5, is prepared,
    Applying foaming liquid to the inspection target part of the boiler water cooling wall,
    Forming the vacuum chamber by the vacuum box;
    Reduce the pressure in the vacuum chamber using an exhaust device connected to the vacuum box,
    The presence or absence of foaming of the foaming liquid in the vacuum box is confirmed visually.
    A method for inspecting a welded portion of a boiler water-cooled wall, comprising a process.
PCT/JP2013/054991 2012-02-28 2013-02-26 Weld inspection device and weld inspection method for boiler water-cooled wall WO2013129411A1 (en)

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