CN101379345A - Boiler water wall panel - Google Patents
Boiler water wall panel Download PDFInfo
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- CN101379345A CN101379345A CNA2007800000245A CN200780000024A CN101379345A CN 101379345 A CN101379345 A CN 101379345A CN A2007800000245 A CNA2007800000245 A CN A2007800000245A CN 200780000024 A CN200780000024 A CN 200780000024A CN 101379345 A CN101379345 A CN 101379345A
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- fin
- wall panel
- connecting plate
- boiler water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/101—Tubes having fins or ribs
- F22B37/102—Walls built-up from finned tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/04—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler and characterised by material, e.g. use of special steel alloy
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
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Abstract
To attain a reduction of weld working load at the fabrication of boiler water wall panel and attain a reduction of maintenance load and enhancement of rate of operation for a furnace housing with built-in boiler water wall panel. Boiler water wall panel (80) comprises panel body (70) with water channel having constituent units of metallic seamless finned single tubes (60) integrally fabricated by hot extrusion technique, etc., these metallic seamless finned single tubes at the distal end of fin portion (62) welded and connected to each other as seam (71) and, provided on at least one surface side of the panel body (70), internal central region weld coating (82) and periphery weld coating (81) of anticorrosion alloy. The finned tube body (60) has tube body part (61) for cooling water channel and, extending on both sides thereof in the direction of tube body axial line, a pair of fin portions (62) wherein intervening portion (63) has an external surface formed into a concave curved surface of 3 to 6 mm curvature radius.
Description
Technical field
The present invention relates to constitute the boiler water wall panel of the burner hearth shell chamber that has cooling water channel.
Boiler water wall panel is the composite plate of sheet material-tubing, when formation is positioned at the wallboard of shell chamber of burner hearth (combustion chamber hold concurrently heat exchanger) of the cardia of water heat type boiler, use as its critical piece, thereby many plates are welded to connect formation burner hearth shell chamber in length and breadth.
In order to improve the durability of burner hearth shell indoor surface, single face is coated with alloys such as nickel self-fluxing alloy on boiler water wall panel.
Background technology
The known method (for example with reference to patent documentation 1) that heats the cooled plate fragment that has alternately the metal tube portion of arranging and sheet metal part in the mode that can not produce thermal deformation.Structure and manufacture method with reference to this cooled plate fragment 20 (boiler water wall panel) of description of drawings.(a) is the side view of metal tube portion 21 and sheet metal part 22 among Fig. 3, (b) is its drawing in side sectional elevation; (c) be the drawing in side sectional elevation of cooled plate fragment 20.And in this manual, the cross section is the section vertical with tube axial direction.
For metal tube portion 21 and sheet metal part 22, produce respectively to split they are alternately arranged the required number of formation plate, and make its length unanimity (with reference to Fig. 3 (a) and (b)) at that time.(with reference to Fig. 3 (c)) then, first sheet metal part 22 is attached to the limit portion of this first metal tube portion 21 with the state that extends along the body axis direction of first metal tube portion 21, and the side face of long limit of a side of sheet metal part 22 and metal tube portion 21 is welded to connect with being wire, afterwards, second sheet metal part 22 still is attached on one side remaining in first metal tube portion 21 both sides with the state that extends along the body axis direction, and the side face of long limit of a side of sheet metal part 22 and metal tube portion 21 is welded to connect with being wire, then, second metal tube portion 21 is attached on this sheet metal part 22, and under the plate body long side direction state consistent with the body axis direction, another long limit of sheet metal part 22 and side face of metal tube portion 21 are welded to connect with being wire, produce band water route plate body thereby next carry out same being welded to connect repeatedly as the mother metal of cooled plate fragment 20.
And then, on each such band water route plate body, form the self-fluxing alloy class lining of the material formation of using self-fluxing alloy classes such as Ni-Cr base at its single face or two sides, thereby produce cooled plate fragment 20.This lining utilizes spraying plating-melt process method to form, and in detail, to the outside of cooled plate fragment 20, utilizes metallikon to form the layer of lining material, and then implements melt process.
Owing to use such manufacture method, so in this cooled plate fragment 20, its mother metal becomes by welding and formed the welding structure to the switch site 23 of sheet metal part 22 from metal tube portion 21.
Other manufacture method also can be enumerated with structure: have the upright protective covering that is provided with outside formation self-fluxing alloy class structure, band fin body of the vertical fin of metallic plate system on the metal tube both sides; thereby form cooled plate fragment assembly of elements; and then be welded to each other connection by indulging the fin top, make a plurality of these cooled plate fragments form the board fabrication method (for example with reference to patent documentation 2) of cooled plate fragment with assembly of elements.With reference to accompanying drawing, the structure and the manufacture method of this cooled plate fragment 50 (boiler water wall panel) is described.(a) is the side view of metal tube 31 and vertical fin 32 among Fig. 4, (b) is its drawing in side sectional elevation; (c) be the drawing in side sectional elevation of band fin body 30; (d) be the side view of cooled plate fragment, (e) be its drawing in side sectional elevation with assembly of elements 40; (f) be the drawing in side sectional elevation of cooled plate fragment 50.
In this case, same is one group with metal tube 30 and the two vertical fins that become connecting plate 32 that become cooling water channel, respectively its split ground is made (with reference to Fig. 4 (a) and (b)), makes its length unanimity for cooled plate fragment 50 required group numbers.(with reference to Fig. 4 (c)) then, in every group, a pair of vertical fin 32 is attached on the both sides of metal tube 31 with the state that extends along the body axis direction, the long limit of one side of vertical fin 32 side face with metal tube 31 is welded to connect with being wire, thereby makes the band fin body 30 that has metal tube 31 and be arranged on these metal tube both sides along a pair of vertical fin 32 of body direction of principal axis extension.Therefore, this band fin body 30 is the welding structure that has formed the switch site 33 from metal tube 31 to vertical fin 32 by welding equally.
Follow (with reference to Fig. 4 (d), (e)), on each band fin body 30, use the material formation self-fluxing alloy class lining 41 of self-fluxing alloy classes such as Ni-Cr base at its single face respectively, thereby make cooled plate fragment assembly of elements 40.This lining still utilizes spraying plating-melt process method to form, but objective for implementation is segmented, and is not to the cooled plate fragment 50 after the assembling but respectively the cooled plate fragment before assembling is implemented with assembly of elements 40.(with reference to Fig. 4 (f)) then, with such cooled plate fragment with assembly of elements 40 as component unit, the top of vertical fin 32 be welded to each other as interface 51 and connect a plurality of these cooled plate fragments with assembly of elements 40, thereby make cooled plate fragment 50.
In addition, though scheme not shown, but it is also known: as to adopt the plate mother metal before the plate mother metal forms the lining of above-mentioned cooled plate fragment 20, when its single face side forms deposited lining with the corrosion resistance alloy, utilize welding method to implement the superalloy lining in the end that is used for being welded to connect with other plates, and implement the self-fluxing alloy lining with spraying plating-melt process method, thereby make the technology (for example with reference to patent documentation 3) of boiler furnace plate at private side; And, in the heating process in the melt process after spraying plating, use Tractor to length direction tractive shell plate on one side, use on one side the displacement of spacing apparatus restriction to two direction of principal axis that intersect with length direction in many places, thus the manufacture method (for example with reference to patent documentation 4) of correcting the alloy lining shell plate of distortion.In these boiler water wall panels, all be the welding structure that forms by welding to the switch site 23 of sheet metal part 22 from metal tube portion 21.
Patent documentation 1: TOHKEMY 2000-329304 communique
Patent documentation 2: TOHKEMY 2001-004101 communique
Patent documentation 3: TOHKEMY 2005-274022 communique
Patent documentation 4: TOHKEMY 2005-337623 communique
But in this existing boiler water wall panel, owing to all be made of welded connection from the switch site of tube body to plate-shaped fins portion, whether good quality to boiler water wall panel produces a very large impact in this welding.That is to say, no matter be that tube body or fin portion all are exposed in the hot environment when boiler uses, thereby tube body is because of being can being cooled off by water, steam of hollow, and fin portion can not be cooled, so their switch site can produce rapid thermograde, be the thermal deformation driving force, the maximum that this switch site becomes stress under this influence generates the position.Therefore, when the welding of switch site not intact, promptly have for example pin hole, convex-concave, pore, overlap, undercut, cinder inclusion, weld crack, splash, during any the failure welding during weld shape is very inhomogeneous etc., these all can become breach, so, can be the deposited lining breakage that starting point produces the corrosion resistance alloy with this place, be corroded thereby mother metal takes place too early.
Weld part bad is difficult to use visual judgement, waits and confirms so must soak into crank detection test by dyeing, and find to have the repairing of process and poor welding portion will carry out TIG welding etc. after implementing shot-peening (cleaning), very bothers.
And the welding of tube body and plate-shaped fins portion is compared with docking the fin top each other and weld, and its operation meeting is much more difficult, although but occur weld defect easily so spend man-hour, therefore, not only the burden of weld job self is very big, and the inspection after it and the burden of repairing are also very big.
So, the burden of the weld job when making in order to alleviate boiler water wall panel and alleviate the maintenance load of boiler water wall panel assembling burner hearth shell chamber and then increase work efficiency, the structure of improveing boiler water wall panel has just become a technical problem.
Summary of the invention
Boiler water wall panel of the present invention (technical scheme 1) is invented in order to solve this problem, this boiler water wall panel will have becomes the multiple row of cooling water channel body, the a pair of fin that extend along the body axis direction more lateral that connects the connecting plate between the row of this body and be positioned at outermost tubulation body, metal, the plate body in band water route is as mother metal, on the one side at least of this mother metal, be applied with the deposition lining of corrosion resistance alloy, it is characterized in that: as the plate body in the described band water route of mother metal, has a pair of fin that connects into seamless metal micro-structural (micro structure) with this single body with both sides at single body with being the continuous shape of one, be with the single finned component unit that is, be welded to each other and be connected to form on the top of fin with single finned body by a plurality of, thereby become the Welding Structure of welding position in the position, Central Line of described connecting plate.
Boiler water wall panel of the present invention (technical scheme 2) will have becomes the multiple row of cooling water channel body, the a pair of fin that extend along the body axis direction more lateral that connects the connecting plate between the row of this body and be positioned at outermost tubulation body metal, the plate body in band water route is as mother metal, on the one side at least of this mother metal, be applied with the deposition lining of corrosion resistance alloy, it is characterized in that: as the plate body in the described band water route of mother metal, a few tubulation bodies with the part that comprises the number that is equivalent to described multiple row body, connect the connecting plate between the row of this body, and the seamless band finned tube-connecting plate assembly of a pair of fin that is positioned at the more lateral of outermost tubulation body is a component unit, wherein, each described connecting plate and described fin respectively with the continuous shape of the mutual one of each body connect into the seamless metal micro-structural; Be welded to each other and be connected to form on the top of fin by a plurality of assemblies, thereby become the Welding Structure of the position, Central Line of a part of connecting plate of welding position in described connecting plate.
And, boiler water wall panel of the present invention (technical scheme 3) will have becomes the multiple row of cooling water channel body, the a pair of fin that extend along the body axis direction more lateral that connects the connecting plate between the row of this body and be positioned at outermost tubulation body, metal, the plate body in band water route is as mother metal, on the one side at least of this mother metal, be applied with the deposition lining of corrosion resistance alloy, it is characterized in that: the plate body as the described band water route of mother metal forms seamless overall structure, this seamless overall structure is only to comprise described multiple row body, connect the connecting plate between the row of this multiple row body, and the integral body of band finned tube-connecting plate assembly of a pair of fin that is positioned at the more lateral of outermost tubulation body constitutes the whole zone of plate body, wherein, each described connecting plate and described fin respectively with the continuous shape of the mutual one of each body connect into the seamless metal micro-structural.
In addition, boiler water wall panel of the present invention (technical scheme 4) is as each the described boiler water wall panel in the above-mentioned technical scheme 1～3, it is characterized in that, form the concave curved surface shape from the outer surface of described body to the position of described fin and described connecting plate transition.
In addition, boiler water wall panel of the present invention (technical scheme 5) is as each the described boiler water wall panel in the above-mentioned technical scheme 1～4, it is characterized in that, what constitute described mother metal seamlessly is with single finned or band finned tube-connecting plate assembly, is by the seamless forming process manufacturing that comprises hot extrusion method.
In addition, boiler water wall panel of the present invention (technical scheme 6) is as each the described boiler water wall panel in the above-mentioned technical scheme 1～5, it is characterized in that, constitute the corrosion resistance alloy of described deposition lining, be in the frame shape zone of the circumference of described plate, with the Ni-Cr alloy that is rich in Ni is base material, and the content of the B in the alloy, Si is suppressed to be the alloy smaller or equal to 0.1 quality %, 0.5 quality % respectively.
In such boiler water wall panel of the present invention (technical scheme 1), with manufacturings such as available heat extrusion, have body portion and be arranged on a pair of fin part of extending along the body axis direction on both sides of body portion and the whole seamless metal micro-structural that is connected as a body continuously be with single finnedly as component unit, the switch site of part just needn't adopt and is welded to connect from the body portion to the fin like this.In addition, the welding each other of fin operative tip is carried out easily than the welding of above-mentioned switch site, and the compactness height of weld part.Like this, when making, boiler water wall panel can alleviate the burden of weld job, and for the burner hearth shell chamber of having assembled the boiler water wall panel of making, owing to do not have weld part at above-mentioned switch site, so deposited lining can not be subjected to the influence of the breach that causes because of the inhomogeneous grade of the welding at this position, and the weld part that has replaced the connecting plate inside of this weld part forms with higher compactness, therefore, significantly reduced lining damage and and then significantly reduced the necessity of safeguarding, stable working state and then operating efficiency improve.
In addition, in boiler water wall panel of the present invention (technical scheme 2), with with above-mentioned seamless with the single finned whole continuous phase of several row fuse formed parts suitable, seamless band finned tube-connecting plate assembly is component unit, so still, needn't adopt to be welded to connect, and also can reduce the welding each other of fin operative tip from the switch site of body portion to the fin part.Like this, when boiler water wall panel is made, can further alleviate the burden of weld job, and for the burner hearth shell chamber that is assembled with boiler water wall panel, can further alleviate the damage of lining.
Therefore, according to the present invention (technical scheme 1,2), the burden of the weld job in the time of can alleviating the boiler water wall panel manufacturing, and can improve the operating efficiency of the burner hearth shell chamber that is assembled with this boiler water wall panel.
In addition, in boiler water wall panel of the present invention (technical scheme 3), only with above-mentioned many seamless with single finned whole continuous phase fuse formed parts suitable, this integral body of seamless band finned tube-connecting plate assembly constitutes the whole zone of plate body, so still, needn't adopt to be welded to connect from the switch site of body portion to the fin part, and fully need not be with the welding each other of fin operative tip.Like this, from boiler water wall panel manufacturing process,, and, can further significantly reduce the damage of lining for the burner hearth shell chamber that is assembled with boiler water wall panel with the weld job full scale clearance.
Therefore, according to the present invention (technical scheme 3), eliminated the burden of the weld job when boiler water wall panel is made, and can improve the operating efficiency of the burner hearth shell chamber that is assembled with this boiler water wall panel.
In addition, in boiler water wall panel of the present invention (technical scheme 4), in plate body, be formed the concave curved surface shape to the outside of the switch site of fin or connecting plate part from tube body, like this, can relax to the stress at this place and concentrate, and the section shape at this position forms the shape that wall thickness increases smoothly gradually to root, the distortion that thereby the rigidity at this position improves, stress causes diminishes, therefore the undesirable influence that the above-mentioned stress that causes because of rapid thermograde produces diminishes, and above-mentioned good action effect increases.And the formation of above-mentioned concave curved surface shape can adopt seamless forming processes such as hot extrusion method easily to carry out, and can help the long lifetime of employed model assemblies such as hot extrusion method.
At this, be more than or equal to 3mm to the radius of curvature of the concave curved surface shape of the outside of the switch site of fin part formation preferably from body portion.Like this, mostly be in the plate of several mm in body portion and connecting plate wall thickness partly, can fully relax stress under normal conditions and concentrate and significantly improve rigidity.In addition, by the radius more than or equal to 3mm also can fully relax with respect to the lining notch effect.Big more these effects of radius are remarkable more, but from the saturated of effect or the viewpoint that avoids waste, preferred above-mentioned radius rests on about 6mm.
And, in boiler water wall panel of the present invention (technical scheme 5), above-mentioned connect continuously seamless that constitutes the plate mother metal is with single finned or band finned tube-connecting plate assembly adopts seamless forming process manufacturings such as hot extrusion method, therefore can make it integration continuously reliably, and can produce efficiently.
And, generally think that in present stage hot extrusion method is suitable for seamless manufacturing with single finned or seamless band finned tube-connecting plate assembly most, but if facility situation or cost allow, also available other seamless forming processes for example powder sintering, sand casting process, centrifugal casting method wait the seamless component unit of making formation plate mother metal etc.
In addition, in boiler water wall panel of the present invention (technical scheme 6), because the B of the deposited lining of the circumference that is used to be welded to connect, the combined amount of Si are controlled as very little, so become the so extremely low lining of thermal shock crack sensitiveness of self-fluxing alloy material that fully is mixed with B, Si, therefore, construct burner hearth shell chamber each other even be welded to connect boiler water wall panel, also can eliminate the possibility that produces thermal shock crack at the connection seam of plate substantially.In addition, it is excellent requiring performance or availability technical scheme 6 described alloys as the low corrosion resistance alloy of thermal shock crack sensitiveness from expense, but also can according to various requirement use other alloys (for example 4901 among the JIS, 4902 or ISO in 4955,9723 described other class alloys).
Description of drawings
Fig. 1 represents the structure and the manufacture method thereof of the boiler water wall panel of an embodiment of the invention, and wherein (a) is the side view of band fin body (seamless with single finned), (b) is its drawing in side sectional elevation; (c) be the side view of plate mother metal (band water route plate body), (d) be its drawing in side sectional elevation; (e) being the side view of boiler water wall panel, (f) is its drawing in side sectional elevation.
Fig. 2 represents the structure and the manufacture method thereof of the boiler water wall panel of another embodiment of the present invention, and wherein (a) is the side view of seamless band finned tube-connecting plate assembly, (b) represents its drawing in side sectional elevation; (c) be the side view of plate mother metal (band water route plate body), (d) be its drawing in side sectional elevation.
Fig. 3 represents an example of cooled plate fragment in the past, and wherein (a) is the side view of metal tube portion and sheet metal part, (b) is its drawing in side sectional elevation; (c) be the drawing in side sectional elevation of cooled plate fragment.
Fig. 4 represents other examples of cooled plate fragment in the past, and wherein (a) is the side view of metal tube and vertical fin, (b) is its drawing in side sectional elevation; (c) be the drawing in side sectional elevation of band fin body; (d) be the side view of cooled plate fragment, (e) be its drawing in side sectional elevation with assembly of elements; (f) be the drawing in side sectional elevation of cooled plate fragment.
Label declaration
20 cooled plate fragments (boiler water wall panel)
21 metal tube portion 22 sheet metal parts, 23 switch sites (welding)
30 band fin bodys, 31 metal tubes
32 vertical fin 33 switch sites (welding)
40 cooled plate fragments are covered with assembly of elements 41 self-fluxing alloy classes
50 cooled plate fragment (boiler water wall panel) 51 interfaces (welding)
60 band fin bodys (seamless be with single finned)
61 body portion 62 fin parts, 63 conversion portions (monolithic molding)
70 plate mother metals (band water route plate body), 71 weld seams (weld parts of connecting plate central authorities)
The deposited lining of 80 boiler water wall panels, 81 circumferences
The deposited lining of 82 interior zones
90 seamless band finned tube-connecting plate assemblies
91 body portion, 92 connecting plate parts, 93 fin parts
94 conversion portions, 95 plate mother metals (band water route plate body)
96 weld seams (weld parts of connecting plate central authorities)
The specific embodiment
With reference to the structure of description of drawings boiler water wall panel of the present invention and an embodiment of manufacture method thereof.(a) is the side view of band fin body 60 among Fig. 1, (b) is its drawing in side sectional elevation; (c) being the side view of plate mother metal 70, (d) is its drawing in side sectional elevation; (e) being the side view of boiler water wall panel 80, (f) is its drawing in side sectional elevation.And the section in each drawing in side sectional elevation is the section vertical with the direction of principal axis of body portion 61.
This boiler water wall panel 80 is to make like this: at first, in advance by hot extrusion method integrally produce as minimum component unit metal seamless be with single finned, promptly be with fin body 60 (with reference to Fig. 1 (a) and (b)); Then,, make after their the length unanimity with the top of fin part 62 and they are welded to each other connection, produce plate mother metal 70 (with reference to Fig. 1 (c), (d)) like this as band water route plate body as weld seam 71 for a plurality of such band fin bodys 60; Then, form the deposited lining of corrosion resistance alloy as the objective for implementation face, like this, produce boiler water wall panel 80 with the single face side of plate mother metal 70.The enforcement of the deposited lining of the corrosion resistance alloy of boiler water wall panel 80 is in proper order: (with reference to Fig. 1 (e), (f)) for example, elder generation uses the alloy of no thermal shock crack sensitiveness to carry out built-up welding in the architrave shape zone 81 of the circumference of objective for implementation face, then the interior zone 82 that is surrounded by architrave shape zone use the good alloy of implementations for example Ni class (Ni-Cr base etc.) or Co class (Co-Cr base etc.) self-fluxing alloy so that can also use the alloy that in these self-fluxing alloys, is mixed with WC etc., spray-melt process.
Band fin body 60 (with reference to Fig. 1 (a) and (b)) are the metal strip with a pair of fin part 62 of extending along the body axis direction of body portion 61 that becomes cooling water channel and the both sides that are arranged on this body portion, is not by being welded to connect from body portion 61 to the switch site 63 of fin part 62, but becomes as a whole by hot extrusion method.In addition, to form the radius of curvature at minimum profile curvature radius position be more than or equal to 3mm but smaller or equal to the concave curved surface shape of 6mm in the outside of this switch site 63.The material of band fin body 60 uses cheap carbon steel, the rolled parts of low-alloy steel (Cr-Mo steel etc.), but also stainless steel, cast member or other metals.Be that general boiler furnace is used under the situation of plate, its dimensional parameters for example is, the diameter of body portion 61 is about 60～80mm, the wall thickness of body portion 61 is about 5～7mm, the width of fin part 62 is about 10～20mm, and the wall thickness of fin part 62 is about 5～7mm.Hot extrusion method generally be with glass as lubricant in benevolence-Sai scholar glass lubriation material extrusion (Ugine-Sejournet) in you, but also but additive method.
Plate mother metal 70 (with reference to Fig. 1 (c), (d)) is welded to connect above-mentioned a plurality of band fin body 60 and makes.In detail,, after making its length unanimity, be arranged in parallel and the top of adjacent fin part 62 is welded to one another connection, be overlapped to form tabular like this for example band fin body 60 about 5～20.With under the situation of plate, the common size of plate mother metal 70 is that length is, width is about 400～1200mm about 4000～8000mm at general boiler furnace.Being welded to connect of weld seam 71 in the plate mother metal 70 uses general carbon dioxide gas arc welding method, TIG welding to wait and carry out; get final product owing to only sheet material is docked with the groove of sheet material; and do not need sheet material and body are touched; so not only operation is easy; efficient improves, and can produce weld defect hardly.In the plate mother metal 70 of the welding structure that produces like this, the fin part 62,62 of butt joint and welding becomes the connecting plate of tube connector body portion 61,61, is positioned on the midline position of this connecting plate as the weld seam 71 of weld part.
Boiler water wall panel 80 (with reference to Fig. 1 (e), (f)) forms the deposited lining 81 of circumference and the deposited lining 82 of interior zone and produces on above-mentioned plate mother metal 70.
As no thermal shock crack sensitiveness, to be used for the Ni-Cr alloy that the corrosion resistance alloy of the deposited lining 81 of circumference can enumerate with rich nickel be base material, will be controlled to be smaller or equal to 0.1 quality % as the content that fusing point reduces the boron of element and will be all content that fusing point reduces the silicon Si of element to be controlled to be alloy smaller or equal to 0.5 quality %.Stipulate the standard of this alloy material, can enumerate the JISG4901 of bar, the JISG4902 of sheet material, can enumerate ISO4955, ISO9723 as international standard as the standard of Japan.The thickness of the deposited lining 81 of circumference is about 1～3mm.
The circumference of plate mother metal 70 become boiler water wall panel after 80s to be used for and other plates between be welded to connect, so there is not thermal shock crack sensitiveness is very important, thereby and remaining interior zone is only welded easiness and the cost that focuses on that lining is implemented.
So since be suitable for spraying plating-melt process method use and implementation good in the deposited lining 82 employed corrosion resistance alloys of interior zone, can enumerate Ni-Cr base self-fluxing alloy.The Ni-Cr composition of the rich nickel of this material surpasses half, and for make its have fusibility that spraying plating processing and melt process institute preferably needs and certainly fusion (Off ラ Network シ Application グ) act on etc. and be can fragility not excessive, the content of B, Si is respectively 1～5 quality %.Can enumerate the nickel self-fluxing alloy material that its composition is defined as Nippon Standard JISH8303, international standard ISO14920 as this alloy material.The thickness of the deposited lining 82 of interior zone is generally about 0.5～3.0mm, but in structure of the present invention, because even body-fin connecting plate switch site and weld part, the surface configuration of mother metal all is complete, so as long as the thickness of lining is for just can play enough corrosion-resisting functions more than or equal to 0.2mm.
In addition, when forming the deposited lining 82 of interior zone, on the single face of plate mother metal 70 when carrying out melt process again after interior zone deposited lining 82 the carrying out spraying plating, heat under the heat effect element that local heat the is used state that for example induction coil moves along the plate length direction on preferred one side, on one side in this heating process with Tractor to length direction drawing plate mother metal 70, thereby and use spacing apparatus restriction to correct distortion in many places to the displacement of two direction of principal axis that intersect with length direction.
The boiler water wall panel 80 that produces like this is transported to boiler from Metal Fabricator factory the scene is set, and is assembled into burner hearth shell chamber thereby the circumference of its circumference and other plates is welded to connect.
With reference to accompanying drawing, the structure of boiler water wall panel of the present invention and another embodiment of manufacture method thereof are described.(a) is the side view of seamless band finned tube-connecting plate assembly 90 among Fig. 2, (b) is its drawing in side sectional elevation; (c) be the side view of plate mother metal 95 (band water route plate body), (d) be its drawing in side sectional elevation.At this, the section in each drawing in side sectional elevation also is the section vertical with the direction of principal axis of body portion 91.
The difference of this boiler water wall panel and above-mentioned boiler water wall panel 80 is, become mother metal band water route plate body, be that the component unit of plate body mother metal 95 has become seamless band finned tube-connecting plate assembly 90.
Seamless band finned tube-connecting plate assembly 90 have several row body 91, connect the connecting plate part 92 between these a few tubulation bodies and be positioned at a pair of fin part 93 in the outside of outermost tubulation body, and they link to each other separately continuously.Though the same with band fin body 60 is with the hot extrusion method monolithic molding, but the such single tube of image-tape fin body 60 whether, thereby but, planar comprise several tubulation body portions 91 with parallel state arranged side by side as arranging a part that is assembled into plate in advance with fin body 60.
From various piece, the body portion 91 that becomes cooling water channel can be identical with body portion 61, fin part 93 can be identical with fin part 62, connecting plate part 92 can be the amount size about equally with 93 two of fin parts, can be identical with switch site 63 to the switch site 94 of connecting plate part 92 or fin part 93 from body portion 91.
Several row of seamless band finned tube-body portion 91 that connecting plate assembly 90 is comprised are equivalent to the part in the multiple row of plate mother metal 95 or the body portion 91 that boiler water wall panel comprised, illustrate in the present embodiment three row examples, but also can have two row or four row or more than.
Such plate mother metal 95 is same with plate mother metal 70, is welded to connect a plurality of seamless band finned tubes-connecting plate assembly 90 and manufactures.In detail, be welded to one another connection, be assembled into tabular, be welded to connect the place that becomes connecting plate by this, be positioned on the midline position of connecting plate as the weld seam 96 of weld part in fin part 93,93 by top with adjacent fin part 93.So, owing in the fabrication stage of seamless band finned tube-connecting plate assembly 90, on body portion 91 integrally formed connecting plate parts 92, do not have weld seam 96, so plate mother metal 95 is the welding structure on the midline position of a part of connecting plate of welding position in the connecting plate that has connected between the row that become the multiple row of cooling water channel body portion 91.A pair of fin part 93 is positioned at the outside of outermost tubulation body.
On the plate mother metal 95 of the welding structure that produces like this, the same with above-mentioned plate mother metal 70, implement to form deposited lining 81 of circumference and the deposited lining 82 of interior zone, thereby become boiler water wall panel, but the quantity of the weld seam 96 in the plate mother metal 95 is lacked than the quantity of the weld seam in the plate mother metal 70 71.
The boiler water wall panel that produces still is transported to boiler from Metal Fabricator factory the scene is set, and is assembled into burner hearth shell chamber thereby the circumference of its circumference and other plates is welded to connect.
The following describes the structure of boiler water wall panel of the present invention and the another embodiment of manufacture method thereof.
It is the variation of above-mentioned another embodiment that present embodiment also can be said to, if Fig. 2 of the structure of the plate mother metal of above-mentioned another embodiment of expression of migrating describes, the weld seam 96 in the connecting plate mother metal 95 also is removed.
That is to say, columns with above-mentioned another embodiment as the body portion 91 in the seamless band finned tube-connecting plate assembly 90 of plate component unit, be increased to the columns of the body portion 91 in the plate mother metal 95, thereby this seamless band finned tube-connecting plate assembly 90 not a plate component unit and become the building material in the whole zone of plate.
This another embodiment is under the situation of narrow width (for example 400～600mm/ body portion, 3～6 row) or useful at the plate mother metal.Afterwards, along with the raising of assembly manufacturing technologies such as hot extrusion method, the applicable object scope can be to expanding than its wideer plate.
(other)
In the above-described embodiment, utilize hot extrusion method to make seamless single finned 60, the seamless band finned tube-connecting plate assembly 90 of being with, but as can producing seamless forming process method, the replacement hot extrusion method that the fin that extends with body with along the body axis direction or connecting plate link to each other continuously, can example go out powder sintering and sand casting process, centrifugal casting method.
In the above-described embodiment, form the deposited lining 81 of circumference of having used the low alloy of thermal shock crack sensitiveness with welding method, but, also can form the deposited lining 81 of circumference with this forming under the situation of lining with spraying plating-additive methods such as melt process method.
Boiler water wall panel of the present invention can be applicable to comprise the burner hearth shell chamber of the various boilers of so-called super boiler (ス one パ ボ イ ラ).Example being set enumerating incinerator etc. as boiler.The incinerator of waste incineration and generating electricity equipment also is classified as this type of.
Claims (6)
1. boiler water wall panel, the plate body in a pair of fin that extend along the body axis direction more lateral that this boiler water wall panel will have becomes the multiple row of cooling water channel body, connect the connecting plate between the row of this body and be positioned at outermost tubulation body, metal, band water route is as mother metal, on the one side at least of this mother metal, be applied with the deposition lining of corrosion resistance alloy, it is characterized in that:
Plate body as the described band water route of mother metal, with the both sides at single body have with this single body connect into with being the continuous shape of one the seamless metal micro-structural a pair of fin, to be with single finned be component unit, be welded to each other and be connected to form on the top of fin with single finned body by a plurality of, thereby become the Welding Structure of welding position in the position, Central Line of described connecting plate.
2. boiler water wall panel, the plate body in metal, the band water route of a pair of fin that extend along the body axis direction more lateral that this boiler water wall panel will have becomes the multiple row of cooling water channel body, connect the connecting plate between the row of this body and be positioned at outermost tubulation body is as mother metal, on the one side at least of this mother metal, be applied with the deposition lining of corrosion resistance alloy, it is characterized in that:
Plate body as the described band water route of mother metal, with a few tubulation bodies of the part that comprises the number that is equivalent to described multiple row body, the seamless band finned tube-connecting plate assembly of a pair of fin that connects the connecting plate between the row of this body and be positioned at the more lateral of outermost tubulation body is component unit, wherein, each described connecting plate and described fin respectively with the continuous shape of the mutual one of each body connect into the seamless metal micro-structural; Be welded to each other and be connected to form on the top of fin by a plurality of assemblies, thereby become the Welding Structure of the position, Central Line of a part of connecting plate of welding position in described connecting plate.
3. boiler water wall panel, the plate body in a pair of fin that extend along the body axis direction more lateral that this boiler water wall panel will have becomes the multiple row of cooling water channel body, connect the connecting plate between the row of this body and be positioned at outermost tubulation body, metal, band water route is as mother metal, on the one side at least of this mother metal, be applied with the deposition lining of corrosion resistance alloy, it is characterized in that:
Plate body as the described band water route of mother metal forms seamless overall structure, this seamless overall structure only constitutes the whole zone of plate body with the integral body of band finned tube-connecting plate assembly of a pair of fin that comprises described multiple row body, connects the connecting plate between the row of this multiple row body and be positioned at the more lateral of outermost tubulation body, wherein, each described connecting plate and described fin respectively with the continuous shape of the mutual one of each body connect into the seamless metal micro-structural.
4. each described boiler water wall panel in the claim 1 to 3 is characterized in that: form the concave curved surface shape from the outer surface of described body to the position of described fin and described connecting plate transition.
5. each described boiler water wall panel in the claim 1 to 4 is characterized in that: constituting the seamless of described mother metal and be with single finned or band finned tube-connecting plate assembly, is by the seamless forming process manufacturing that comprises hot extrusion method.
6. each described boiler water wall panel in the claim 1 to 5, it is characterized in that: the corrosion resistance alloy that constitutes described deposition lining, be in the frame shape zone of the circumference of described plate, with the Ni-Cr alloy that is rich in Ni is base material, and the content of the B in the alloy, Si is suppressed to be the alloy smaller or equal to 0.1 quality %, 0.5 quality % respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP300962/2006 | 2006-11-06 | ||
| JP2006300962A JP2008116150A (en) | 2006-11-06 | 2006-11-06 | Panel for boiler waterwall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101379345A true CN101379345A (en) | 2009-03-04 |
Family
ID=39364282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800000245A Pending CN101379345A (en) | 2006-11-06 | 2007-04-18 | Boiler water wall panel |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20100300379A1 (en) |
| EP (1) | EP2080951A4 (en) |
| JP (1) | JP2008116150A (en) |
| KR (1) | KR20090101322A (en) |
| CN (1) | CN101379345A (en) |
| TW (1) | TW200821503A (en) |
| WO (1) | WO2008056456A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589002A (en) * | 2012-03-30 | 2012-07-18 | 上海锅炉厂有限公司 | Boiler water cooled wall |
| CN107282699A (en) * | 2017-08-03 | 2017-10-24 | 周孟 | The apparatus for correcting and method of a kind of boiler water wall |
| CN111356877A (en) * | 2017-11-17 | 2020-06-30 | 山特维克知识产权股份有限公司 | Boiler tube, boiler tube unit and melting furnace |
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| US20110094227A1 (en) * | 2009-10-27 | 2011-04-28 | General Electric Company | Waste Heat Recovery System |
| EP2631322B1 (en) * | 2010-10-22 | 2016-11-09 | Dai-Ichi High Frequency Co., Ltd. | Alloy-coated boiler component |
| DE102011055282A1 (en) * | 2011-07-26 | 2013-01-31 | Alstom Technology Ltd. | Method for welding thin-walled pipes by means of peak tempering welding |
| EP2696138A3 (en) * | 2012-08-10 | 2018-01-10 | Mitsubishi Hitachi Power Systems, Ltd. | Preventive maintenance repairing method for welded parts of boiler membrane panels and boiler equipment on which preventive maintenance repairing has been performed |
| US9724742B2 (en) * | 2013-08-07 | 2017-08-08 | Azz Wsi Llc | Method of forming flat bar |
| JP6012089B2 (en) * | 2015-08-04 | 2016-10-25 | 第一高周波工業株式会社 | Method for manufacturing protector for metal member |
| CN105240866A (en) * | 2015-11-02 | 2016-01-13 | 无锡华光锅炉股份有限公司 | Membrane type stiffening bar fixing structure |
| JP6721996B2 (en) * | 2016-02-17 | 2020-07-15 | 三菱日立パワーシステムズ株式会社 | Gasification furnace wall, combined gasification combined cycle facility having the same, and method for manufacturing gasification furnace wall |
| US10731849B2 (en) | 2016-06-03 | 2020-08-04 | General Electric Technology Gmbh | Apparatus and method for welding a waterwall panel |
| US10323842B2 (en) * | 2017-03-03 | 2019-06-18 | Sumitomo SHI FW Energia Oy | Watertube panel portion and a method of manufacturing a watertube panel portion in a fluidized bed reactor |
| JP6951927B2 (en) * | 2017-09-29 | 2021-10-20 | 三菱パワー株式会社 | Boiler repair content selection method |
| CN111043589A (en) * | 2019-12-31 | 2020-04-21 | 哈尔滨科能熔敷科技有限公司 | Flow guide beam and method for reducing abrasion of wall-attached wind of water-cooled wall of boiler |
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| FR2565338B1 (en) * | 1984-06-05 | 1988-10-07 | Stein Industrie | HEAT EXCHANGE PANEL WITH VERTICAL TUBES, FOR RECOVERY BOILERS SUCH AS BLACK LIQUOR BOILERS, OR ON HOUSEHOLD WASTE INCINERATION FURNACES, AND METHODS OF MAKING SAME |
| DE4232880A1 (en) * | 1992-09-30 | 1994-03-31 | Siemens Ag | Fossil-fuelled steam-generator - has tubes forming flue walls joined together gas-tight at bottom and leaving intervening gaps further up |
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| JPH07218172A (en) * | 1993-12-09 | 1995-08-18 | Sanden Corp | Heat exchanger and manufacture thereof |
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| US20020121120A1 (en) * | 2001-01-03 | 2002-09-05 | Kraft Frank F. | Method and apparatus for manufacturing extruded parts |
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-
2006
- 2006-11-06 JP JP2006300962A patent/JP2008116150A/en active Pending
-
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- 2007-04-18 KR KR1020077016082A patent/KR20090101322A/en not_active Application Discontinuation
- 2007-04-18 US US12/445,808 patent/US20100300379A1/en not_active Abandoned
- 2007-04-18 WO PCT/JP2007/058443 patent/WO2008056456A1/en active Application Filing
- 2007-04-18 CN CNA2007800000245A patent/CN101379345A/en active Pending
- 2007-04-18 EP EP07741879A patent/EP2080951A4/en not_active Withdrawn
- 2007-06-28 TW TW096123568A patent/TW200821503A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589002A (en) * | 2012-03-30 | 2012-07-18 | 上海锅炉厂有限公司 | Boiler water cooled wall |
| CN107282699A (en) * | 2017-08-03 | 2017-10-24 | 周孟 | The apparatus for correcting and method of a kind of boiler water wall |
| CN111356877A (en) * | 2017-11-17 | 2020-06-30 | 山特维克知识产权股份有限公司 | Boiler tube, boiler tube unit and melting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20090101322A (en) | 2009-09-25 |
| US20100300379A1 (en) | 2010-12-02 |
| JP2008116150A (en) | 2008-05-22 |
| EP2080951A4 (en) | 2009-12-16 |
| TW200821503A (en) | 2008-05-16 |
| EP2080951A1 (en) | 2009-07-22 |
| WO2008056456A1 (en) | 2008-05-15 |
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