CN104011524A - 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 PDFInfo
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- CN104011524A CN104011524A CN201380004492.5A CN201380004492A CN104011524A CN 104011524 A CN104011524 A CN 104011524A CN 201380004492 A CN201380004492 A CN 201380004492A CN 104011524 A CN104011524 A CN 104011524A
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- cooling tube
- water cooling
- wall
- edge
- arranged side
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- 238000007689 inspection Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 226
- 238000001816 cooling Methods 0.000 claims description 135
- 238000012360 testing method Methods 0.000 claims description 59
- 239000006260 foam Substances 0.000 claims description 10
- 238000005187 foaming Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000012800 visualization Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 12
- 238000012856 packing Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 239000007767 bonding agent Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 241001622581 Hasora Species 0.000 description 1
- 241000278713 Theora Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Classifications
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
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
Technical field
The present invention relates to a kind of weld part testing fixture and weld part inspection method of boiler water wall.
Background technology
In JIS Z2329 2002, regulation has foaming to reveal the vacuum method of test method.According to this vacuum method, make vacuum tank and test face have butt airtightly, to reducing pressure in vacuum tank, have or not foaming to come leakage and the position of the gas in validation test face according to the expanding foam solution of the test face of being coated in.
In patent documentation 1, record the leakage testing fixture that can check based on this vacuum method the tube sheet of the condenser of the leakage of the cooling tube of condenser.Reveal two of testing fixture contact casees and smooth tube sheet butt, the leakage of the cooling tube extending between tube sheet is checked.
On the other hand, as the leakage inspection method of weld part, be known to PT (soaking into flaw detection) and check.In the situation that PT checks, utilizing after cleaning fluid cleaned inspection object portion, soak into liquid to the object portion coating of inspection.Next, wiping after check object portion surperficial unnecessary soak into liquid, coating developer solution.Check according to PT, manifest color by making to soak in the liquid that soaks into of the defect of weld part, thereby can confirm having or not of defect by visualization.
Formerly technical literature
Patent documentation
Patent documentation 1: Japan opens clear 62-148933 communique in fact
Brief summary of the invention
The problem that invention will solve
In boiler water wall, water cooling tube configures side by side, stops up water cooling tube gap each other by be welded in the fin of water cooling tube along long side direction.Therefore, have with the curvature of the outer peripheral face of water cooling tube concavo-convexly accordingly at boiler water wall, in the case of the leakage testing fixture of tube sheet of condenser that uses patent documentation 1, cannot make to contact case and boiler water wall butt airtightly.Thereby, even if used the leakage testing fixture of the tube sheet of the condenser of patent documentation 1, for the weld part of boiler water wall, also can not carry out the vacuum method of JIS Z2329 2002 defineds.
Therefore, all the time, the inspection of the weld part of boiler water wall checks to carry out by PT.But, check in the liquid using to there is flammable material at PT, exist and in the processing procedure of liquid, should be noted that and check loaded down with trivial details such problem.In addition, in PT checks, there is following problem: because process number is more, therefore spended time in checking process; Accuracy of detection for the defect running through is not high.
Summary of the invention
The present invention In view of the foregoing completes, its object is, a kind of weld part testing fixture and weld part inspection method of boiler water wall are provided, its can be at short notice easily and detect reliably water cooling tube in boiler water wall and the defect running through of fin and fin weld part each other.
Solution
In order to reach above-mentioned purpose, the invention provides a kind of weld part testing fixture of boiler water wall, this boiler water wall possesses the water cooling tube multiple arranged side by side of configuration arranged side by side, stops up the fin in adjacent water cooling tube described arranged side by side gap each other by welding, the weld part testing fixture of described boiler water wall is characterised in that, possess: vacuum tank, a part at least two adjacent described water cooling tubes arranged side by side and a part for described fin form the object portion that checks, this vacuum tank forms vacuum chamber together with described inspection object portion; And exhaust apparatus, it is connected with described vacuum tank, and described vacuum tank has: window portion, it has light transmission; Two sidewalls, its mode with water cooling tubes arranged side by side in described two water cooling tubes arranged side by side, corresponding configures respectively; At least one end wall, it configures in the mode of intersecting with the long side direction of described water cooling tube arranged side by side; Lateral margin containment member, it is installed on the edge of described sidewall, and for sealing between the edge to described sidewall and described water cooling tube arranged side by side; And ora terminalis containment member, it is installed on the edge of described end wall, and for sealing between the edge to described end wall and described water cooling tube arranged side by side and described fin, the edge of described end wall has: along the edge of the linearity of described fin; And along the circular-arc edge of described water cooling tube arranged side by side, described ora terminalis containment member has: the sealing that is installed on the linearity of the edge of described linearity; And be installed on the circular-arc sealing of described circular-arc edge.
According to the weld part testing fixture of boiler water wall of the present invention, the edge of end wall has circular-arc edge, and ora terminalis containment member has the circular-arc sealing that is installed on circular-arc edge.Therefore,, even there is in the inspection object portion of boiler water wall formed by water cooling tube arranged side by side and fin concavo-convex, vacuum tank also can form airtight vacuum chamber in the lump with inspection object portion.Therefore, according to this weld part testing fixture, can with the inspection object portion of boiler water wall in independently concavo-convex, easily and reliably detect at short notice the defect running through that checks the weld part in object portion.
Preferably, described in the Thickness Ratio of the sealing of described linearity, the thickness of circular-arc sealing is large.
According to this structure, even if the plate of the weld part between water cooling tube and fin or formation fin weld part is each other more outstanding than the surrounding of this weld part side by side, due to larger with the thickness of the sealing of the linearity of weld part butt, therefore the sealing of linearity can be out of shape with the outstanding mutually suitable of weld part.Therefore,, even if weld part is outstanding, utilize the sealing of linearity also can, to weld part and sealing reliably around thereof, therefore utilize vacuum tank to form airtight vacuum chamber.
In the weld part testing fixture of the boiler water wall using the in the situation that of at the place of inspection object portion of described boiler water wall, in the linearly extension of described water cooling tube arranged side by side, preferably, described vacuum tank has two end walls that are separated from each other, are separately installed with described ora terminalis containment member along the long side direction of described water cooling tube arranged side by side.
According to this structure, the in the situation that of at the place of inspection object portion of boiler water wall, in the linearly extension of water cooling tube arranged side by side, can utilize simple structure to make vacuum tank form airtight vacuum chamber.
Inspection object portion at described boiler water wall locates, has along long side direction in the weld part testing fixture of the boiler water wall using circular-arc curve part at described water cooling tube arranged side by side, preferably, described vacuum tank has: two end walls, its long side direction along described water cooling tube arranged side by side is separated from each other, and is separately installed with described ora terminalis containment member; Sidewall, it has the edge with circular-arc curve part along described water cooling tube arranged side by side; And lateral margin containment member, install its edge along described sidewall.According to this structure, at the place of inspection object portion of boiler water wall, in the situation that water cooling tube is circular-arc extension side by side, can utilize simple structure to make vacuum tank form airtight vacuum chamber.
At the inspection object portion place of described boiler water wall, intersecting in the weld part testing fixture of the boiler water wall that the gap of water cooling tube and described water cooling tube arranged side by side and described fin formation uses by the second fin obstruction of extending along the direction of intersecting with described water cooling tube arranged side by side, described water cooling tube arranged side by side blocks adjacent pipe gap each other with described fin respectively, preferably, described vacuum tank has: an end wall, it separates with described the second fin on the long side direction of described water cooling tube arranged side by side, and described ora terminalis containment member is installed; Sidewall, it extends between water-cooling wall at described end wall and described intersection; Roof, it is combined with described end wall and described sidewall; Containment member, it comprises described ora terminalis containment member and described lateral margin containment member, and described sidewall and described water cooling tube arranged side by side, described intersection are sealed between water cooling tube and described the second fin; And containment member, it seals between water cooling tube described roof and described intersection.
According to this structure, locate, have and intersect water pipe near of water cooling tube arranged side by side in the inspection object portion of boiler water wall, can utilize simple structure to make vacuum tank form airtight vacuum chamber.
In addition, the invention provides a kind of weld part inspection method of boiler water wall, this boiler water wall possesses the water cooling tube multiple arranged side by side of configuration arranged side by side, stops up the fin in adjacent water cooling tube described arranged side by side gap each other by welding, the weld part inspection method of described boiler water wall is characterised in that, comprises following operation: the weld part testing fixture of preparing the boiler water wall described in any one in claim 1 to 5; Inspection object portion to described boiler water wall gives expanding foam solution; Utilize described vacuum tank to form described vacuum chamber; Use the exhaust apparatus being connected with described vacuum tank and make the pressure decreased in described vacuum chamber; And confirm that by visualization the described expanding foam solution in described vacuum tank has or not foaming.
According to the weld part inspection method of boiler water wall of the present invention, the edge of the end wall of the vacuum tank of preparation has circular-arc edge, and ora terminalis containment member has the circular-arc sealing that is installed on circular-arc edge.Therefore,, even there is in the inspection object portion of boiler water wall formed by water cooling tube arranged side by side and fin concavo-convex, also can make vacuum tank and check that object portion forms airtight vacuum chamber in the lump.Therefore, according to this weld part inspection method, can with the inspection object portion of boiler water wall in independently concavo-convex, easily and reliably detect at short notice the defect running through that checks the weld part in object portion.
Invention effect
According to the present invention, provide can a kind of boiler water wall weld part testing fixture and weld part inspection method, its can be at short notice easily and detect reliably the defect running through of the weld part in boiler water wall.
Brief description of the drawings
Fig. 1 is the figure of the structure of the boiler water wall of the weld part testing fixture of schematic representation application embodiments of the present invention.
Fig. 2 is by the vacuum tank of weld part testing fixture and the water floor of the boiler water wall stereographic map of schematic representation in the lump of the boiler water wall of formation the first embodiment.
Fig. 3 is the figure for the welding structure of the water cooling tube in the water floor of the boiler water wall of key diagram 2 and fin.
Fig. 4 is the figure of the structure of the weld part testing fixture of the boiler water wall of schematic representation the first embodiment.
Fig. 5 is vacuum tank in exploded view 4 and the stereographic map of schematic representation.
Fig. 6 cuts the part of water floor that checks object open and the front view of vacuum tank in schematic representation Fig. 4.
Fig. 7 is the side view of the vacuum tank of the weld part testing fixture of the schematic representation boiler water wall that forms the second embodiment.
Fig. 8 is illustrated in the end wall observed under the direction of the arrow VIII in Fig. 7 and the figure of ora terminalis containment member.
Fig. 9 is using the vacuum tank of the weld part testing fixture of the boiler water wall of formation the 3rd embodiment and as the water floor of boiler water wall and the angle of the sidewall stereographic map of schematic representation in the lump that check object.
Figure 10 is vacuum tank in enlarged drawing 9 and the stereographic map of schematic representation.
Figure 11 is vacuum tank in enlarged drawing 9 and the stereographic map of observing from other direction of schematic representation.
The figure of three lines of vision of the vacuum tank in Figure 12 foot Fig. 9.
Embodiment
Below, describe embodiments of the present invention in detail with reference to accompanying drawing.Wherein, the size of the component parts that embodiment is recorded, material, shape and relative configuration thereof etc. are as long as no the record being particularly limited, and its purport is not in this record by circumscription of the present invention.
Fig. 1 represents the vacuum tank 100,200,300 of the weld part testing fixture of the Sketch of boiler water wall 1 and the first to the 3rd embodiment in the lump.Boiler water wall 1 has water floor 2, top water-cooling wall 3, face portion water-cooling wall 4 and sidepiece water-cooling wall 5, and the water cooling tube that forms water floor 2, face portion water-cooling wall 4 and top water-cooling wall 3 will couple together between dry drum 7 and drum 8.
(the first embodiment)
Fig. 2 is the part stereographic map of schematic representation in the lump with water floor 2 by the vacuum tank of the weld part testing fixture of the first embodiment 100.Water floor 2 by exist regulation interval and side by side multiple water cooling tubes 10 of configuration, form to stop up the fin 12 that the mode in water cooling tube 10 gap each other configures.Fin 12 is welded in water cooling tube 10 along the long side direction of water cooling tube 10, and across long side direction stop up water cooling tube 10 gap each other.Therefore, on water floor 2, have with the curvature of the outer peripheral face of water cooling tube 10 concavo-convex accordingly.
In more detail, as shown in Figure 3, each water cooling tube 10 is made up of multiple straight tube 10a that series connection links via weld part 14.In addition, fin 12 is made up of multiple plate 12a, 12b, between water cooling tube 10 and plate 12a, 12b and plate 12a, 12b each other, utilize weld part 16 to be welded to each other.
To it should be noted that, in order illustrating, on the weld part 16 in Fig. 3, to mark profile line.
The structure of the weld part testing fixture of Fig. 4 schematic representation the first embodiment.In addition, Fig. 5 decomposes vacuum tank 100 and the stereographic map of schematic representation.
Vacuum tank 100 in the case of with the inspection object portion butt of water floor 2, check that a part for water cooling tube 10 and the part for fin 12 of object portion form airtight vacuum chamber in the lump with forming.
On vacuum tank 100, be connected with the pipe arrangement 102 communicating with vacuum chamber, pipe arrangement 102 is for example T word branch.The atmosphere that is midway provided with in a side branch discharges with valve 104, and the front end of branch is to atmosphere split shed.Thereby, discharge with valve 104 by opening and closing atmosphere, can be to being communicated with between vacuum chamber and atmosphere or interdicting.
The opposing party's branch be provided with exhaust valve 106 and exhaust apparatus inlet valve 108 midway, the front end of the opposing party's branch is connected with exhaust apparatus 110.
Exhaust apparatus 110 is made up of for example vacuum pump, air ejector, discharges and closes and when exhaust valve 106 and exhaust apparatus inlet valve 108 open, the air in vacuum chamber is discharged to outside with valve 104 at atmosphere.
Vacuum tank 100 is made up of pair of sidewalls 112, pair of end walls 114, roof 116, packing ring 118, a pair of lengthwise pressing plate 120, a pair of pressing plate in a narrow margin 121, multiple screw 122, a pair of handle 124, pressure gauge 126, an oppose side edge containment member 128, a pair of ora terminalis containment member 130.
Pressure gauge 126 is for example made up of Bu Shi pressure gauge, and for showing the pressure in vacuum chamber.
Roof 116, sidewall 112 and end wall 114 are for example made up of the plate of the wall thickness of acrylic resin system separately, have light transmission.Roof 116 has rectangular flat shape, posts the four smooth annular packing rings 118 in limit at the edge of roof 116.Packing ring 118 is for example rubber packing thing, across packing ring 118, sidewall 112 and end wall 114 is used to screw 122 and is fixed on roof 116.
Thereby, roof 116 and sidewall 112 and the airtight combination of end wall 114.In addition, sidewall 112 and end wall 114 mutually combine airtightly by bonding agent.
It should be noted that, the head of screw 122 via lengthwise pressing plate 120 and in a narrow margin pressing plate 121 and with roof 116 butts, thus, packing ring 118 is compressed equably, between roof 116 and sidewall 112 and end wall 114 by airtight sealing well.
Sidewall 112 has rectangular flat shape, uses bonding agent to fix to have the lateral margin of rectangular shape containment member 128 the edge (sealing edge) of the sidewall 112 of the opposition side of roof 116 is upper.Lateral margin containment member 128 has length and the width corresponding with the size of the sealing edge of sidewall 112, covers sidewall 112 in the scope in whole region.It should be noted that, on a side sidewall 112, be formed with the through hole 131 for setting pressure meter 126.
Fig. 6 is the part figure of schematic representation in the lump with the water floor 2 of inspection object by the front of vacuum tank 100.On end wall 114, be formed with the through hole 132 connecting for pipe arrangement 102.
As shown in Figure 6, end wall 114 comprises having the rectangular portion 134 of rectangular flat shape and link and have the trapezoidal portion 136 of roughly trapezoidal flat shape with one side one of rectangular portion 134.Wherein, the side of trapezoidal portion 136 has quadrant arc shape.
Thereby the edge (sealing edge) 138 of the end wall 114 of the opposition side of roof 116 comprises the edge (the second linearity edge) 144 of the linearity that the edge (the first linearity edge) 140 of the linearity being made up of the minor face of trapezoidal portion 136, the circular-arc edge 142 being made up of the side of trapezoidal portion 136 and the part by one side of rectangular portion 134 form.And using bonding agent to fix on the sealing edge 138 of end wall 114 has ora terminalis containment member 130.It should be noted that, ora terminalis containment member 130 is also combined by bonding agent airtightly with lateral margin containment member 128.
Ora terminalis containment member 130 has length and the width corresponding with the size of the sealing edge 138 of end wall 114, covers sealing edge 138 in the scope in whole region.Thereby ora terminalis containment member 130 comprises the second linearity sealing 150 that covers the first linearity sealing 146 of the first linearity edge 140, the circular-arc sealing 148 that covers circular-arc edge 142 and covering the second linearity edge 144.
In the time of the free state in not contacting with the inspection object portion of water floor 2, it is parallel with the first linearity edge 140 that the first linearity sealing 146 has the outside surface of thickness T 1, the first linearity sealing 146.For example, thickness T 1 is 12mm.
On the other hand, in the time of the free state in not contacting with the inspection object portion of water floor 2, circular-arc sealing 148 and the second linearity sealing 150 have identical thickness T 2, and the outside surface of circular-arc sealing 148 and the second linearity sealing 150 is parallel with circular-arc edge 142 and the second linearity edge 144.For example, thickness T 2 is 10mm.
It should be noted that, the second linearity edge 144 and the second linearity sealing 150 can be also circular-arc, or as long as lateral margin containment member 128 can be combined airtightly with ora terminalis containment member 130, also can omit this second linearity edge 144 and the second linearity sealing 150., the second linearity edge 144 and the second linearity sealing 150 nonessential inscape.
Preferably, thickness T 1 is larger than thickness T 2, and more preferably, thickness T 1 is more suitable from the outstanding projecting height of fin 12 (built-up welding thickness) than the large amount of thickness T 2 and weld part 16.As preference, in the scope of poor (T1-T2) of thickness T 1 and thickness T 2 below the above 4mm of 2mm, in the present embodiment, poor (T1-T2) is 2mm.
In addition, preferably, ora terminalis containment member 130 has the outside surface 152 being made up of with the dip plane of cutting the mode in this region and arranging the staggered region of the outside surface of the outside surface at the first linearity sealing 146 and circular-arc sealing 148.
Lateral margin containment member 128 and ora terminalis containment member 130 are made up of the bipeltate of non-gas penetration potential, preferably, are made up of chloroprene rubber.As preference, as lateral margin containment member 128 and ora terminalis containment member 130, can use neoprene (registered trademark) cavernous body.
And preferably, lateral margin containment member 128 and ora terminalis containment member 130 have the hardness in 25 ± 5 scopes of spending.
The inspection method of weld part 16 of weld part testing fixture to the boiler water wall that uses the first above-mentioned embodiment describes.
First, apply expanding foam solution to the inspection object portion of boiler water wall 1.Check that object portion is the part of the boiler water wall 1 of water cooling tube 10 linearly extensions.As expanding foam solution, for example, can use super bubble (super bubble) (MARKTEC Co., Ltd. system).
Next, make vacuum tank 100 and check object portion butt.In the present embodiment, in the time making vacuum tank 100 and check object portion butt, as shown in Figure 2, configure vacuum tank 100 along long side direction and the end wall 114 of water cooling tube 10 with the mode that the long side direction of water cooling tube 10 intersects with sidewall 112.In addition, now, configure vacuum tank 100 with lateral margin containment member 128 and the outside surface butt of water cooling tube 10, the first linearity sealing 146 and fin 12 butts, circular-arc sealing 148 and the second linearity sealing 150 of ora terminalis containment member 130 with the mode of the outside surface butt of water cooling tube 10.
After vacuum tank 100 is configured in assigned position, close atmosphere and discharge with valve 104, open exhaust valve 106 and exhaust apparatus inlet valve 108, exhaust apparatus 110 is worked.Thus, discharged the pressure decreased of vacuum chamber to outside with checking the air in the vacuum chamber that object portion forms by vacuum tank 100.
According to JIS Z2329 2002, in the situation that there is no special provision, till the pressure in vacuum tank is decompressed to and forces down pressure more than 0.015MPa than atmosphere.In the present embodiment, when making pressure decreased to becoming in the situation of inspection pressure of 0.05MPa～0.06MPa, confirm the foaming of expanding foam solution by visualization.In the situation that expanding foam solution foams, knownly have the defect such as aperture, crack through weld part 16 at this position of foaming.
It should be noted that, in the present embodiment, roof 116 has light transmission, has the function as the window portion for visualization.Sidewall 112 and end wall 114 can be configured to any one in light transmission, non-light transmittance.
When confirm by visualization foaming have or not time, the inspection of this inspection object portion finishes.In the situation that checking that the next one checks object portion, after closing exhaust valve 106, open atmosphere and discharge with valve 104, in vacuum chamber, import extraneous air.Next, control handle 124, make vacuum tank 100 move to the next object portion that checks, repeat said sequence.If make vacuum tank 100 move the amount of the length of this vacuum tank 100 along the long side direction of water cooling tube 10, can check efficiently.
According to the weld part testing fixture of the boiler water wall of the first above-mentioned embodiment, the edge of end wall 114 has circular-arc edge 142, and ora terminalis containment member 130 has the circular-arc sealing 148 that is installed on circular-arc edge 142.Therefore,, even if there is formed by water cooling tube (water cooling tube side by side) 10 and fin 12 concavo-convex in the inspection object portion of boiler water wall 1, vacuum tank 100 also can form airtight vacuum chamber in the lump with inspection object portion.Therefore, according to this weld part testing fixture, with in the inspection object portion of boiler water wall 1 concavo-convex independently, can detect reliably the defect running through that checks the weld part 16 in object portion.
In addition, according to the weld part testing fixture of the boiler water wall of the first above-mentioned embodiment, even if the weld part 16 between water cooling tube 10 and fin 12 or the plate 12a of fin 12 weld part 16 are each other outstanding from the surrounding of this weld part 16, due to larger with the thickness of the first linearity sealing 146 of weld part 16 butts, therefore the first linearity sealing 146 can be out of shape with the outstanding mutually suitable of weld part 16.Therefore, even if weld part 16 is outstanding, also can utilize the first linearity sealing 146 by weld part 16 and sealing reliably around thereof, therefore utilize vacuum tank 100 to form airtight vacuum chamber.
And then, according to the weld part testing fixture of the boiler water wall of above-mentioned the first embodiment, in the inspection object portion of boiler water wall 1, the in the situation that of water cooling tube 10 linearly extension, can utilize simple structure to make vacuum tank 100 form airtight vacuum chamber.
(the second embodiment)
Below, the weld part testing fixture of the boiler water wall to the second embodiment describes.It should be noted that, in the structure for the second embodiment, the part similar or identical with the structure of the first embodiment mark identical title or Reference numeral and simplify or the description thereof will be omitted.
The weld part testing fixture of the second embodiment is for checking that water cooling tube 10 is the part of arc-shaped bend, for example, for checking the bight of face portion water-cooling wall 4 and 2 one-tenth of water floors.For this reason, the difference of the weld part testing fixture of the second embodiment and the weld part testing fixture of the first embodiment is only, replaces vacuum tank 100 and uses the vacuum tank 200 that represents brief configuration in Fig. 7.
As shown in Figure 7, water cooling tube 10 has the curve part that is arc-shaped bend along long side direction, and the sidewall 202 of vacuum tank 200 has the edge (sealing edge) 206 with circular-arc curve part in the opposition side of roof 204.The curve part of sealing edge 206 has the suitable curvature corresponding with the curve part of water cooling tube 10.Install and have certain thickness lateral margin containment member 208 at sealing edge 206 places, lateral margin containment member 208 extends in the mode along the water cooling tube 10 with circular-arc curve part.
The end wall 210 of vacuum tank 200 is installed on and checks when object portion at vacuum tank 200, is fixed on roof 204 in the mode of intersecting with the long side direction of water cooling tube 10.Therefore, end wall 210 correspondingly tilts fixing with respect to smooth roof 204 with the curvature of water cooling tube 10.
It should be noted that, in Fig. 7, though omitted packing ring, lengthwise pressing plate, pressing plate, screw and handle in a narrow margin, vacuum tank 200 has these inscapes.
Fig. 8 is illustrated in end wall 210 and the ora terminalis containment member 212 when observing in the direction of the arrow VIII in Fig. 7.
End wall 210 is made up of rectangular portion 214 and trapezoidal portion 216, and the sealing edge 218 of end wall 210 is made up of the first linearity edge 220, circular-arc edge 222 and the second linearity edge 224.And ora terminalis containment member 212 is made up of the first linearity sealing 226, circular-arc sealing 228 and the second linearity sealing 230.Preferably, ora terminalis containment member 212 has the outside surface 232 being made up of with the dip plane of cutting the mode in this region and arranging the staggered region of the outside surface of the outside surface at the first linearity sealing 226 and circular-arc sealing 228.
The using method of the weld part testing fixture of the boiler water wall of the second embodiment is identical with the situation of the first embodiment.
According to the weld part testing fixture of the boiler water wall of the second embodiment, with the situation of the first embodiment in the same manner, concavo-convex irrelevant with the inspection object portion of boiler water wall 1, can detect the defect that checks the weld part 16 in object portion reliably.
In addition, according to the weld part testing fixture of the boiler water wall of above-mentioned the second embodiment, identical with the situation of the first embodiment, even if weld part 16 is outstanding, utilize the first linearity sealing 226 also can, by weld part 16 and sealing reliably around thereof, therefore utilize vacuum tank 200 to form airtight vacuum chamber.
And then, according to the weld part testing fixture of the boiler water wall of above-mentioned the second embodiment, in the inspection object portion of boiler water wall 1, in the situation that water cooling tube 10 is circular-arc extension, can utilize simple structure to make vacuum tank 200 form airtight vacuum chamber.
(the 3rd embodiment)
Below, the weld part testing fixture of the boiler water wall to the 3rd embodiment describes.It should be noted that, for part in the structure of the 3rd embodiment, similar or identical with the structure of the first embodiment and the second embodiment, mark identical title or Reference numeral and simplify or description thereof is omitted.
As shown in Figure 9, the weld part testing fixture of the boiler water wall of the 3rd embodiment uses in the case of checking the angle of the water-cooling wall 1 configuring in the mode of intersection water cooling tube 10.Such inspection object portion is the angle of water floor 2 with 5 one-tenth, the sidepiece water-cooling wall of for example boiler water wall 1, and the fin 302 of being used by the angle that is welded in said structure between the water cooling tube of the water cooling tube of sidepiece water-cooling wall 5 (water cooling tube side by side) 10 and fin 12 and water floor 2 (intersect water cooling tube) 10 stops up.
Therefore, the difference of the weld part testing fixture of the weld part testing fixture of the boiler water wall of the 3rd embodiment and the boiler water wall of the first embodiment is only, replaces vacuum tank 100 and use vacuum tank 300.
Figure 10 and Figure 11 are the stereographic maps of schematic representation vacuum tank 300.Vacuum tank 300 has an end wall 304, pair of sidewalls 306 and roof 308 in order to check the angle of boiler water wall 1.
Check when object portion vacuum tank 300 is arranged at, end wall 304 configures in the mode of intersecting with the long side direction of the water cooling tube 10 of sidepiece water-cooling wall 5.With the edge (sealing edge) 310 of the opposed end wall 304 of sidepiece water-cooling wall 5 on ora terminalis containment member 312 is installed.
And in the time that vacuum tank 300 is arranged at inspection object portion, sidewall 306 configures in the mode of the long side direction of the water cooling tube 10 along sidepiece water-cooling wall 5.With the edge (sealing edge) 314 of the opposed sidewall 306 of sidepiece water-cooling wall 5 on lateral margin containment member 316 is installed.On the other hand, with the edge (sealing edge) 318 of the opposed sidewall 306 of water floor 2 on lateral margin containment member 320 is installed.
In addition, in the time that vacuum tank 300 is arranged at inspection object portion, roof 308 is to configure with the opposed mode of sidepiece water-cooling wall 5.With the edge (sealing edge) 322 of the opposed roof 308 of water cooling tube 10 of water floor 2 on apical margin containment member 324 is installed.
Figure 12 is the figure of three concise and to the point lines of vision of vacuum tank 300.Two trapezoidal portions 326 that end wall 304 is connected by rectangular portion 325, with one side one of rectangular portion 325 form.The sealing edge 310 of end wall 304 has the circular-arc edge 332 of the first linearity edge 326, circular-arc edge 328, the second linearity edge 330 and semicircle arcuation.And ora terminalis containment member 312 has the first linearity sealing 334, circular-arc sealing 336, the second linearity sealing 338 and covers the circular-arc sealing 340 of the semicircle arcuation of circular-arc edge 332.
Preferably, ora terminalis containment member 312 has the outside surface 342 that the region staggered by the appearance of the outside surface at the first linearity sealing 334 and circular-arc sealing 336,340 forms with the dip plane of cutting the mode in this region and arranging.
On the other hand, the trapezoidal portion 344 that sidewall 306 is connected by rectangular portion 343 and with one side one of rectangular portion 343 forms.The sealing edge 314 of sidewall 306 has the first linearity edge 345, circular-arc edge 346 and the second linearity edge 348.Lateral margin containment member 320 has the first linearity sealing 350, circular-arc sealing 352 and the second linearity sealing 354.
Preferably, lateral margin containment member 320 has the outside surface 356 being made up of with the dip plane of cutting the mode in this region and arranging the staggered region of the outside surface of the outside surface at the first linearity sealing 350 and circular-arc sealing 352.
It should be noted that, in Figure 10 to Figure 12, though omitted packing ring, lengthwise pressing plate, pressing plate, screw and handle in a narrow margin, vacuum tank 300 has these inscapes.
According to the vacuum tank 300 of the weld part testing fixture of the 3rd embodiment, in the time that vacuum tank 300 is arranged at inspection object portion, fin 12 butts between three water cooling tubes of ora terminalis containment member 314 and sidepiece water-cooling wall 5 (water cooling tube side by side) 10 and these water cooling tubes 10.And, water cooling tube 10 butts at the two ends in lateral margin containment member 316 and three water cooling tubes 10, fin (the second fin) 302 that lateral margin containment member 320 and angle are used and the water cooling tube of water floor 2 (intersect water cooling tube) 10 butts.In addition, water cooling tube 10 butts of apical margin containment member 324 and water floor 2.
The using method of the weld part testing fixture of the boiler water wall of the 3rd embodiment is identical with the situation of the first embodiment.
According to the weld part testing fixture of the boiler water wall of the 3rd embodiment, with the situation of the first embodiment in the same manner, can with the inspection object portion of boiler water wall 1 in independently concavo-convex, detect reliably the defect running through that checks the weld part 16 in object portion.
In addition, according to the weld part testing fixture of the boiler water wall of above-mentioned the 3rd embodiment, with the situation of the first embodiment in the same manner, even if weld part 16 is outstanding, also utilize the first linearity sealing 324,350 by weld part 16 and sealing reliably around thereof, therefore utilize vacuum tank 300 to form airtight vacuum chamber.
In addition, according to the weld part testing fixture of the boiler water wall of above-mentioned the 3rd embodiment, because vacuum tank 300 and water floor 2 and sidepiece water-cooling wall 5 these two walls form vacuum chamber in the lump, therefore also can detect reliably the defect running through of the weld part 16 between fin 302 and water cooling tube 10 and the fin 12 of sidepiece water-cooling wall 5 that angle of departure uses.In other words, in the inspection object portion of boiler water wall 1, even if near water cooling tube (water cooling tube side by side) 10 at the side's at the formation angle of boiler water wall 1 wall has the water cooling tube (intersection water cooling tube) 10 of other walls, also can utilize simple structure, make vacuum tank 300 form airtight vacuum chamber.
The present invention is not limited to the above-mentioned first to the 3rd embodiment, is also contained in form that the first to the 3rd embodiment changed in separately, combines the form that these forms form.
For example, in the vacuum tank 100 of the first embodiment, end wall 114 and ora terminalis containment member 130 stride across two water cooling tubes, 10 ground and extend, but can be also to stride across three above water cooling tube 10 ground to extend.In other words the water cooling tube 10 that, vacuum tank 100 also can be above with three of fin 12 both sides forms vacuum chamber in the lump.
But, due to dimensional tolerence, the distortion etc. of water cooling tube 10, fin 12, end wall 114 and ora terminalis containment member 130 more increase, sealing more reduces, therefore end wall 114 and ora terminalis containment member 130 preferably stride across the 10 ground extensions of three water cooling tubes at the most, more preferably stride across two following water cooling tube 10 ground and extend.
Claims (6)
1. a weld part testing fixture for boiler water wall, this boiler water wall possesses the water cooling tube multiple arranged side by side of configuration arranged side by side, stops up the fin in adjacent water cooling tube described arranged side by side gap each other by welding,
The weld part testing fixture of described boiler water wall is characterised in that to possess:
Vacuum tank, a part at least two adjacent described water cooling tubes arranged side by side and a part for described fin form the object portion that checks, and this vacuum tank and described inspection object portion form vacuum chamber in the lump; And
Exhaust apparatus, it is connected with described vacuum tank,
Described vacuum tank has:
Window portion, it has light transmission;
Two sidewalls, its mode with water cooling tubes arranged side by side in described two water cooling tubes arranged side by side, corresponding configures respectively;
At least one end wall, it configures in the mode of intersecting with the long side direction of described water cooling tube arranged side by side;
Lateral margin containment member, it is installed on the edge of described sidewall, and for sealing between the edge to described sidewall and described water cooling tube arranged side by side; And
Ora terminalis containment member, it is installed on the edge of described end wall, and for sealing between the edge to described end wall and described water cooling tube arranged side by side and described fin,
The edge of described end wall has:
Along the edge of the linearity of described fin; And
Along the circular-arc edge of described water cooling tube arranged side by side,
Described ora terminalis containment member has:
Be installed on the sealing of the linearity of the edge of described linearity; And
Be installed on the circular-arc sealing of described circular-arc edge.
2. the weld part testing fixture of boiler water wall according to claim 1, is characterized in that,
Described in the Thickness Ratio of the sealing of described linearity, the thickness of circular-arc sealing is large.
3. the weld part testing fixture of boiler water wall according to claim 1 and 2, is characterized in that,
The weld part testing fixture of described boiler water wall uses at the inspection object portion place of described boiler water wall, in the linearly extension of described water cooling tube arranged side by side in the situation that,
Described vacuum tank has two end walls that are separated from each other, are separately installed with described ora terminalis containment member along the long side direction of described water cooling tube arranged side by side.
4. the weld part testing fixture of boiler water wall according to claim 1 and 2, is characterized in that,
The weld part testing fixture of described boiler water wall is located, is had circular-arc curve part and use along long side direction at described water cooling tube arranged side by side in the inspection object portion of described boiler water wall,
Described vacuum tank has:
Two end walls, its long side direction along described water cooling tube arranged side by side is separated from each other, and is separately installed with described ora terminalis containment member;
Sidewall, it has the edge with circular-arc curve part along described water cooling tube arranged side by side; And
Lateral margin containment member, install its edge along described sidewall.
5. the weld part testing fixture of boiler water wall according to claim 1 and 2, is characterized in that,
The weld part testing fixture of described boiler water wall uses following in the situation that: intersect water cooling tube and the described water cooling tube arranged side by side that extend along the direction of intersecting with described water cooling tube arranged side by side are blocked by the second fin with the gap of described fin formation, described water cooling tube arranged side by side blocks adjacent pipe gap each other with described fin respectively
Described vacuum tank has:
An end wall, it separates with described the second fin on the long side direction of described water cooling tube arranged side by side, and described ora terminalis containment member is installed;
Sidewall, it extends between water-cooling wall at described end wall and described intersection;
Roof, it is combined with described end wall and described sidewall;
Containment member, it comprises described ora terminalis containment member and described lateral margin containment member, and described sidewall and described water cooling tube arranged side by side, described intersection are sealed between water cooling tube and described the second fin; And
Containment member, it seals between water cooling tube described roof and described intersection.
6. a weld part inspection method for boiler water wall, this boiler water wall possesses the water cooling tube multiple arranged side by side of configuration arranged side by side, stops up the fin in adjacent water cooling tube described arranged side by side gap each other by welding,
The weld part inspection method of described boiler water wall is characterised in that, comprises following operation:
Prepare the weld part testing fixture of the boiler water wall described in any one in claim 1 to 5;
Inspection object portion to described boiler water wall gives expanding foam solution;
Utilize described vacuum tank to form described vacuum chamber;
Use the exhaust apparatus being connected with described vacuum tank and make the pressure decreased in described vacuum chamber; And
Confirm that by visualization the described expanding foam solution in described vacuum tank has or not foaming.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012042570A JP5734224B2 (en) | 2012-02-28 | 2012-02-28 | Boiler water-cooled wall weld zone inspection device and weld zone inspection method |
| JP2012-042570 | 2012-02-28 | ||
| PCT/JP2013/054991 WO2013129411A1 (en) | 2012-02-28 | 2013-02-26 | Weld inspection device and weld inspection method for boiler water-cooled wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104011524A true CN104011524A (en) | 2014-08-27 |
| CN104011524B CN104011524B (en) | 2016-08-24 |
Family
ID=49082608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380004492.5A Expired - Fee Related CN104011524B (en) | 2012-02-28 | 2013-02-26 | The weld part of boiler water wall checks device and weld part inspection method |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP5734224B2 (en) |
| KR (1) | KR101643067B1 (en) |
| CN (1) | CN104011524B (en) |
| BR (1) | BR112014020553B1 (en) |
| IN (1) | IN2014MN01702A (en) |
| WO (1) | WO2013129411A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104498699A (en) * | 2014-11-25 | 2015-04-08 | 西安热工研究院有限公司 | Heat treatment apparatus after local welding of boiler membrane water screen, and technology thereof |
| CN112192083A (en) * | 2020-09-26 | 2021-01-08 | 国家能源集团谏壁发电厂 | Construction process for preventing weld joint cracks of water wall pipe |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11307114B2 (en) | 2018-12-17 | 2022-04-19 | National Oilwell Varco, L.P. | Pressure-based flaw detection |
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| JPS54119979A (en) * | 1978-03-09 | 1979-09-18 | Seiken Co | Method and device for detecting leakage of fluid from coupled part |
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| JPS62165542U (en) * | 1986-04-10 | 1987-10-21 | ||
| JPH01240833A (en) * | 1988-03-22 | 1989-09-26 | Toshiba Eng & Constr Co Ltd | Method and apparatus for testing pressure resistance of piping |
-
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- 2012-02-28 JP JP2012042570A patent/JP5734224B2/en active Active
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2013
- 2013-02-26 BR BR112014020553-1A patent/BR112014020553B1/en active IP Right Grant
- 2013-02-26 KR KR1020147022418A patent/KR101643067B1/en active IP Right Grant
- 2013-02-26 CN CN201380004492.5A patent/CN104011524B/en not_active Expired - Fee Related
- 2013-02-26 IN IN1702MUN2014 patent/IN2014MN01702A/en unknown
- 2013-02-26 WO PCT/JP2013/054991 patent/WO2013129411A1/en active Application Filing
Patent Citations (4)
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|---|---|---|---|---|
| JPS59166834A (en) * | 1983-03-14 | 1984-09-20 | Hitachi Ltd | Leakage detecting and leakage preventing device of lining tank |
| JPH10227712A (en) * | 1997-02-18 | 1998-08-25 | Japan Atom Energy Res Inst | Method for searching leaking part of pipe and vacuum device |
| CN101726395A (en) * | 2009-12-17 | 2010-06-09 | 浙江东海岸船业有限公司 | Method for testing tightness of welding lines |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104498699A (en) * | 2014-11-25 | 2015-04-08 | 西安热工研究院有限公司 | Heat treatment apparatus after local welding of boiler membrane water screen, and technology thereof |
| CN112192083A (en) * | 2020-09-26 | 2021-01-08 | 国家能源集团谏壁发电厂 | Construction process for preventing weld joint cracks of water wall pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013178180A (en) | 2013-09-09 |
| KR20140112549A (en) | 2014-09-23 |
| KR101643067B1 (en) | 2016-07-26 |
| JP5734224B2 (en) | 2015-06-17 |
| BR112014020553B1 (en) | 2022-09-06 |
| IN2014MN01702A (en) | 2015-05-29 |
| WO2013129411A1 (en) | 2013-09-06 |
| BR112014020553A2 (en) | 2017-06-20 |
| CN104011524B (en) | 2016-08-24 |
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