CN117300506A - Turbine guide housing welding and shaping device and welding and shaping method - Google Patents
Turbine guide housing welding and shaping device and welding and shaping method Download PDFInfo
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- CN117300506A CN117300506A CN202311264488.4A CN202311264488A CN117300506A CN 117300506 A CN117300506 A CN 117300506A CN 202311264488 A CN202311264488 A CN 202311264488A CN 117300506 A CN117300506 A CN 117300506A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/001—Turbines
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Abstract
本发明涉及涡轮导向器壳体焊接定形装置及其焊接定型方法，用于焊接前安装边、导向器外壳、后安装边，包括径向定位组件，轴向定位组件；所述轴向组件包括转轴以及转动套装在转轴上的两个定位盘，焊接前安装边、后安装边可分别对应卡入两个定位盘内侧面，并经由定位盘相对套装在转轴上；所述径向定位组件包括定位内套、定位外套；导向器外壳经定位内套、定位外套夹持形成呈圆弧片状的壳体结构以实现对导向器外壳的径向定位。本发明的有益效果是：能有利于防止焊接变形，确保导向器壳体在焊接、热处理后，尺寸符合图纸规定。
The invention relates to a turbine guide housing welding and shaping device and a welding and shaping method for welding the front mounting edge, the guide shell and the rear mounting edge, and includes a radial positioning component and an axial positioning component; the axial component includes a rotating shaft And two positioning plates that are rotated and set on the rotating shaft. The front and rear mounting edges of the welding can be respectively snapped into the inner sides of the two positioning plates and relatively set on the rotating shaft through the positioning plates; the radial positioning assembly includes a positioning The inner sleeve and the positioning outer sleeve; the guide shell is clamped by the positioning inner sleeve and the positioning outer sleeve to form an arc-shaped shell structure to achieve radial positioning of the guide shell. The beneficial effects of the present invention are: it can help prevent welding deformation and ensure that the dimensions of the guide housing comply with the drawings after welding and heat treatment.
Description
Technical Field
The invention relates to the field of welding of turbine guide shells of engines, in particular to a turbine guide shell welding shaping device and a welding shaping method thereof.
Background
The turbine guide of a certain helicopter engine is formed by welding and combining a plurality of layers of thin-wall parts, and the shell is formed by combining a front mounting edge, a rear mounting edge and a guide sleeve, and the materials of the turbine guide are all 1Cr18Ni9Ti. The wall thickness of the guide sleeve is 1mm, the outer diameter is phi 190mm, the guide sleeve is of an opening structure, and the diameters of the front mounting edge and the rear mounting edge and the thickness of the mounting edge are 2mm at maximum. The guide shell is a thin-walled piece, and serious deformation can be generated in the welding process and the postweld heat treatment.
Therefore, a turbine guide shell welding and shaping device is provided, and when an outer shell of an engine turbine guide shell is welded, a front mounting edge, a guide shell and a rear mounting edge are positioned, so that the post-welding dimension is ensured, the welding deformation is prevented, and the post-welding dimension is ensured to meet the specification of a drawing.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a welding shaping device and a welding shaping method for a turbine guide shell of a certain helicopter engine.
The aim of the invention is realized by the following technical scheme:
the turbine guide shell welding shaping device is used for welding the front mounting edge, the guide shell and the rear mounting edge and comprises a radial positioning assembly and an axial positioning assembly; the axial assembly comprises a rotating shaft and two positioning disks rotationally sleeved on the rotating shaft, and a front mounting edge and a rear mounting edge which are welded can be correspondingly clamped into the inner side surfaces of the two positioning disks respectively and are sleeved on the rotating shaft relatively through the positioning disks; the radial positioning assembly comprises a positioning inner sleeve and a positioning outer sleeve; the guide device shell is clamped by the positioning inner sleeve and the positioning outer sleeve to form a circular arc sheet-shaped shell structure so as to realize radial positioning of the guide device shell;
during welding, the positioning inner sleeve and the positioning outer sleeve are sleeved on the rotating shaft in a penetrating way and are positioned between the front mounting edge and the rear mounting edge, so that two ends of the guide device shell are correspondingly connected with the front mounting edge and the rear mounting edge respectively; the positioning jacket is provided with a notch, and the joint of the front mounting edge and the guide shell can be partially exposed from the notch.
Before welding, three parts of a front mounting edge, a guide shell and a rear mounting edge are mutually provided with no assembly positioning mechanism, the scheme limits the relative positions of the front mounting edge, the guide shell and the rear mounting edge through parts such as a positioning disk, a radial positioning assembly and an axial limiting nut, so that the welding process of the scheme can be defined by utilizing the technical tool, and the three parts of the front mounting edge, the guide shell and the rear mounting edge shell are subjected to spot welding, and are integrally welded and manufactured after the overall dimension of the parts is fixed.
During integral welding, a rotating mechanism is formed by utilizing the rotation design of the rotating shaft, so that the device rotates in the welding process until full circle welding is completed.
In a preferred embodiment of the scheme, the welding shaping device further comprises a bottom plate, two supporting blocks arranged on the bottom plate, and two ends of the rotating shaft are detachably and rotatably arranged at the top of the two supporting blocks; one end of the rotating shaft penetrates out of the corresponding supporting block and is provided with a rotating shaft hand wheel; the rotating shaft is detachably connected with the rotating shaft hand wheel. The manual rotation pivot of being convenient for in the welding process, and then the manual overall structure who constitutes of preceding installation limit, director shell, back installation limit of rotating in the welding process of being convenient for.
In a preferred embodiment of the scheme, a step shaft is arranged in the middle of the rotating shaft, and the width of the step shaft is matched with the width of the guide device shell; the step axle both sides still are equipped with the screw thread section, and screw thread section screw thread fit has axial stop nut, and during the welding, two positioning disk suit can be in step axle both sides to apply pressure to pivot middle part via axial stop nut, so that preceding installation limit, director shell, back installation limit contact.
In a preferred embodiment of the present solution, the positioning sleeve includes a left positioning plate and a right positioning plate; the left positioning plate and the right positioning plate are oppositely screwed on the left screw rod and the right screw rod, the left screw rod and the right screw rod are arranged on the bottom plate, and the screw thread directions on the two sides of the left screw rod and the right screw rod are opposite to each other so as to drive the left positioning plate and the right positioning plate to move oppositely or reversely; the opposite surfaces of the left positioning plate and the right positioning plate are respectively provided with an arc-shaped part, and when the left positioning plate and the right positioning plate relatively move until the left positioning plate and the right positioning plate are contacted, the two arc-shaped parts form a circular ring structure with a top notch.
In a preferred embodiment of the present solution, one end of the left and right screws is provided with a screw hand wheel. Is convenient for manual operation.
In a preferred embodiment of the scheme, the bottom plate is further provided with a sliding rail, and the bottom of the left positioning plate and the bottom of the right positioning plate are respectively provided with a limiting block corresponding to the sliding rail. Through the cooperation of slide rail and stopper, realize at left and right sides screw rod rotation in-process, the relative or the opposite movement of left locating plate, right locating plate.
In a preferred embodiment of the present solution, a half hole is formed at the top of the supporting block for supporting the end of the rotating shaft; the top of the supporting block is also provided with a rotating shaft pressing block, one end of the rotating shaft pressing block is hinged to one side of the half hole, and the other end of the rotating shaft pressing block is tightly locked and installed on the other side of the half hole through a rotating shaft pressing screw sleeve and a bolt.
The scheme also provides a welding shaping method applying the turbine guide shell welding shaping device, and the welding shaping method comprises the following steps:
s0, assembling the turbine guide shell welding and shaping device, wherein the assembly is completed so that part of the guide shell is visible at the notch;
s1, spot welding is carried out on a guide device shell at the exposed notch;
s2, rotating the rotating shaft integrally with the guide shell by a certain angle, and spot welding the guide shell exposed out of the notch;
s3, repeating the operation until the spot welding of the whole circle of the front and rear mounting edges of the guide shell is completed;
s4, after spot welding of the whole circle is finished, rotating a screw hand wheel, enabling the left positioning plate and the right positioning plate to move outwards in the axial direction of the rotating shaft, enabling the left positioning plate and the right positioning plate not to withdraw from the inner side end surfaces of the front mounting edge and the rear mounting edge, and enabling the radial distance between the left positioning plate and the right positioning plate and the outer shell of the guider to be-mm;
s5, welding the joint positions of the front mounting edge and the guide shell at the top gaps of the left positioning plate and the right positioning plate, and simultaneously, rotating a rotating shaft hand wheel, and after rotating the guide by one circle through the rotating shaft, completing welding of the front mounting edge and the guide shell; and then the joint of the mounting edge and the guide shell is welded after the operation is finished.
In a preferred embodiment of this solution, the welding shaping method further includes step S6 after step S5:
s6, rotating a rotating shaft hand wheel after welding is completed, enabling the left positioning plate and the right positioning plate to move axially towards the rotating shaft at the same time, folding the left positioning plate and the right positioning plate until the left positioning plate and the right positioning plate contact the outer wall of the guide shell, clamping the guide shell axially by the two positioning plates at the moment, clamping the inner circle and the outer circle of the guide shell by the left positioning plate, the right positioning plate and the positioning inner sleeve, and controlling the appearance of the guide shell by the welding setting device; and then the guide shell and the welding shaping device are put into a high-temperature furnace for heat treatment so as to eliminate welding stress.
The beneficial effects of the invention are as follows:
(1) According to the scheme, the position of a turbine guider shell of a helicopter engine is limited by an axial positioning assembly formed by parts such as a rotating shaft, a positioning disc, an axial limiting nut and the like and a radial positioning assembly formed by a positioning inner sleeve and a positioning outer sleeve, so that welding positioning among three workpieces of a front mounting edge, a guider shell and a rear mounting edge is realized;
meanwhile, the radial positioning is realized by attaching and clamping the inner surface and the outer surface of the guide device shell through the positioning inner sleeve and the positioning outer sleeve;
the radial positioning assembly does not need to be locked while controlling the circumferential size of the guide device shell, and the rotating shaft can drive the workpiece to rotate so as to gradually rotate the position to be welded to the notch at the top of the radial positioning assembly, and the welding of all positions on the circumference of the workpiece can be performed at the notch;
therefore, the technical proposal can accurately position the front mounting edge, the guide shell and the rear mounting edge, and solves the problem of shape setting of the turbine guide shell of a certain helicopter engine during welding manufacture;
in addition, the rotating shaft is rotatably arranged on the supporting block, one end of the rotating shaft is provided with a rotating shaft hand wheel, and after the front installation edge, the guide device shell and the rear installation edge are preliminarily welded and connected, the rotating shaft can be rotated in a hand-shaking mode, so that the guide device shell can be driven to rotate;
the rotating shaft is gradually rotated to realize the welding mode, namely the rotating shaft is gradually rotated for the first time, the shape of the shell of the guide device is determined by spot welding in the rotating process, and then the rotating shaft is gradually rotated for the second time, so that the full welding is realized, the scheme can be beneficial to avoiding the problem of serious deformation in the welding process, and ensures that the size after welding meets the specification of a drawing;
(2) In this scheme, pivot detachable installs on the supporting shoe, can wholly put into the high temperature furnace with pivot and pivot epaxial work piece after the welding and carry out the thermal treatment to eliminate welding stress, improve welding seam organization and comprehensive properties, stabilize director casing overall dimension, thereby this scheme can ensure that director casing is welded, after the thermal treatment, and the size accords with the drawing regulation.
Drawings
FIG. 1 is a schematic illustration of the present invention;
FIG. 2 is a cross-sectional illustration of the present invention;
fig. 3 is a schematic view of a welded product of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
It should be noted that, since the guide housing is a thin-walled member, the welding process and the post-welding heat treatment thereof both generate serious deformation, and how to ensure the post-welding dimension of the guide housing and control the deformation thereof is a major consideration when designing within the range specified in the drawing. For this, the present embodiment is designed as follows.
As shown in fig. 1 to 3, the welding and shaping device for the turbine guider shell of a certain helicopter engine comprises a bottom plate 1, two supporting blocks 2 and an outer shell positioning mechanism; the outer housing positioning mechanism includes a radial positioning assembly and an axial positioning assembly.
The wall thickness of the outer sleeve of the guide device is 1mm, the outer diameter size is phi 190mm, the guide device is of an opening structure, and the diameters of the front mounting edge a and the rear mounting edge c and the thickness of the outer sleeve b of the guide device are 2mm at most; during welding, the front mounting edge a and the rear mounting edge c are not drilled, so that the radial direction is non-directional, and the circumferential direction is not required to be controlled; the guide shell b is of an opening structure, and the circumference of the inner diameter and the outer diameter of the guide shell b need to be positioned, so that the radial positioning assembly is designed to control the circumferential size of the guide shell b; meanwhile, the axial positioning assembly is designed to control the overall axial dimension of the guide shell b.
Specifically, the axial component comprises a rotating shaft 3 and two positioning disks 5 which can be sleeved on the rotating shaft 3 relatively, and the radial positioning component comprises a positioning inner sleeve 4 and a positioning outer sleeve.
The inner side surface of the positioning disk 5 is provided with an annular groove matched with the outer contour of the front mounting edge a or the outer contour of the rear mounting edge c; the two ends of the rotating shaft 3 are detachably and rotatably arranged at the top parts of the two supporting blocks 2, a step shaft 301 is arranged in the middle of the rotating shaft 3, and the width of the step shaft 301 is matched with the width of the guide shell b; the front mounting edge a and the rear mounting edge c can be respectively correspondingly mounted in the inner annular grooves of the two positioning plates 5 and sleeved on the rotating shaft 3 through the positioning plates 5. The guide shell b is sleeved between the positioning inner sleeve 4 and the positioning outer sleeve, and the positioning inner sleeve 4 is matched with the positioning outer sleeve to form radial positioning of the guide shell b; during welding, the positioning inner sleeve 4 and the positioning outer sleeve are sleeved on the rotating shaft 3 in a penetrating way and are positioned between the front mounting edge a and the rear mounting edge c.
Meanwhile, in this embodiment, the two sides of the step shaft 301 are further provided with thread sections 302, the thread sections 302 are in threaded fit with axial limit nuts 7, two positioning discs 5 can be sleeved on the two sides of the step shaft 301, and pressure is applied to the middle of the rotating shaft 3 through the axial limit nuts 7, so that two ends of the guide shell b are correspondingly connected with the front mounting edge a and the rear mounting edge c respectively, and axial positioning is achieved.
Further, in this embodiment, the positioning sleeve is provided with a notch, and the position to be welded between the front mounting edge a and the guide housing b and the position to be welded between the guide housing b and the rear mounting edge c can be partially exposed from the notch, so that the welding operation is performed at the notch.
During welding, the guide device shell is required to be welded with a whole circle according to the circumference of the position shown in the figure 3; the guide shell b is a thin-wall piece, and heat treatment is needed to be carried out after welding so as to stabilize the postwelding state.
Further, in this embodiment, the outer housing positioning mechanism includes a left positioning plate 601 and a right positioning plate 602; the left positioning plate 601 and the right positioning plate 602 are oppositely screwed on the left screw rod 8 and the right screw rod 8 is arranged on the bottom plate 1, and the screw threads on the two sides of the left screw rod 8 are opposite in direction so as to drive the left positioning plate 601 and the right positioning plate 602 to move oppositely or reversely; the opposite surfaces of the left positioning plate 601 and the right positioning plate 602 are respectively provided with an arc-shaped part, and when the left positioning plate 601 and the right positioning plate 602 relatively move until the left positioning plate 601 and the right positioning plate 602 are contacted, the two arc-shaped parts form a circular structure with a notch.
Optionally, in this embodiment, the outer casing positioning mechanism further includes a sliding rail 16, and the bottom of the left positioning plate 601 and the bottom of the right positioning plate 602 are provided with limiting blocks corresponding to the sliding rail 16 respectively, so that when the left and right screws 8 rotate, the left positioning plate 601 and the right positioning plate 602 can move relatively or reversely along the sliding rail 16.
Referring to fig. 1, in this embodiment, one end of the left and right screws 8 is provided with a screw hand wheel 13 to drive the left positioning plate 601 and the right positioning plate 602 to move relatively or oppositely; one end of the rotating shaft 3 is provided with a rotating shaft hand wheel 14, and the rotating shaft 3 can be manually rotated through the rotating shaft hand wheel 14, so that the rotating guide shell can be conveniently subjected to spot welding and full welding.
In the embodiment, the welding shaping device also comprises a rotating shaft pressing block 10 and a rotating shaft pressing screw sleeve 9; half holes are respectively formed at the tops of the two mounting support blocks 2 and used for supporting two ends of the rotating shaft 3; one end of the rotating shaft pressing block 10 is hinged to one side of the half hole, the other end of the rotating shaft pressing block 10 is locked and installed on the other side of the half hole through the rotating shaft pressing screw sleeve 11 and the bolt 12, and the design of the rotating shaft pressing block 10 can facilitate the post-welding heat treatment after the whole guider shell is taken out upwards.
Description of the operation of this embodiment:
before welding, the rotating shaft 3 is firstly taken down, an axial limiting nut 7 and a positioning disc 5 are installed on one side in the steering direction, and the rotating axial limiting nut 7 is tightly pressed on one end face of a step shaft 301 of the rotating shaft 3; the front mounting edge a, the guide shell b and the rear mounting edge c are sequentially arranged on the rotating shaft 3, and a positioning inner sleeve 4 is arranged in an inner hole of the guide shell b;
then, the end of the rear mounting edge c on the rotating shaft 3 is sequentially provided with another positioning disk 5 and another axial limiting nut 7, the axial limiting nut 7 is rotated to press the assembly of the guide shell b (note that the front mounting edge a and the seam allowance of the rear mounting edge c are provided with the outer diameter of the guide shell b at the moment, but a certain gap is reserved between the front mounting edge a and the seam allowance of the rear mounting edge c, and the outer diameter of the guide shell b can be adjusted); at this time, the rotating shaft 3 (together with the parts mounted thereon) is placed in the half holes of the supporting blocks 2 at the two ends, the screw hand wheels 13 on the left and right screws 8 are rotated, the left positioning plate 601 and the right positioning plate 602 simultaneously move axially towards the rotating shaft 3, and the position of the rotating shaft 3 is adjusted, so that the left positioning plate 601 and the right positioning plate 602 enter the middle positions of the front and rear mounting edges of the guide shell b; rotating the screw hand wheel 13 on the left and right screws 8 until the left positioning plate 601 and the right positioning plate 602 are in contact with each other and cannot move, wherein the left positioning plate 601 and the right positioning plate 602 form a circle with a notch, the guide shell b is arranged in the circle formed by the left positioning plate 601 and the right positioning plate 602, and the guide shell b is of an opening structure, and is radially clamped by the left positioning plate 601, the right positioning plate 602 and the positioning inner sleeve 4 on the device to determine the inner ring size and the outer ring size;
then, the c-end axial limit nut 7 of the installation edge is installed after rotation, and the guide shell b is pressed; the axial dimension of the guide shell b is limited by a step shaft 301 on the rotating shaft 3, the axial limit nut 7 is pressed and then is determined, the rotating shaft pressing block 10 is put down, the rotating shaft pressing screw sleeve 11 is screwed down, and the assembly of the welding and shaping device of the turbine guide shell b of the engine is completed; at this time, the shape of the guide shell b is only visible at the openings (namely, circular gaps) at the upper ends of the left positioning plate 601 and the right positioning plate 602, and then spot welding is performed on the guide shell exposed out of the openings at the upper ends of the left positioning plate 601 and the right positioning plate 602; after the front mounting edge a and the rear mounting edge c at the exposed positions are connected with the guide shell b and spot-welded at two points, the rotating shaft hand wheel 14 is rotated, the rotating shaft 3 and the guide are integrally rotated for a certain angle, and spot welding is carried out on the guide shells at the upper end openings of the left positioning plate 601 and the right positioning plate 602;
repeating the above operation until the circle spot welding of the front and rear mounting edges of the guide shell b is completed;
after the spot welding is finished, rotating the screw hand wheel 13, simultaneously moving the left positioning plate 601 and the right positioning plate 602 to the axial outer side of the rotating shaft 3, enabling the left positioning plate 601 and the right positioning plate 602 not to withdraw from the inner side end surfaces of the front mounting edge a and the rear mounting edge c, enabling the left positioning plate 601 and the right positioning plate 602 to be 3-4mm away from the guide shell in the radial direction, then welding the joint positions of the front mounting edge a and the guide shell b at the openings of the left positioning plate 601 and the right positioning plate 602, simultaneously rotating the rotating shaft hand wheel, and completing the welding of the front mounting edge a and the guide shell b after rotating the guide by one turn by utilizing the rotating shaft 3; then according to the operation, the joint of the mounting edge c and the guide shell b is welded after the completion;
after welding, rotating the rotating shaft hand wheel 14, axially moving the left positioning plate 601 and the right positioning plate 602 towards the rotating shaft 3 at the same time, and folding the left positioning plate 601 and the right positioning plate 602 until the left positioning plate and the right positioning plate contact the outer wall of the guide shell b, wherein the guide shell b is axially clamped by the two positioning plates 5, the inner and outer circles of the shell are clamped by the left positioning plate 602 and the right positioning plate 4, and the shape of the guide shell b is controlled by the welding shaping device; and then placing the guide shell b together with the welding shaping device into a high-temperature furnace for heat treatment so as to eliminate welding stress and improve weld joint structure and comprehensive performance, and simultaneously limiting the post-welding size by the device to ensure that the size of the guide shell b after heat treatment meets the specification of drawing.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (9)
1. Turbine director casing welding setting device for before welding installation limit (a), director shell (b), back installation limit (c), its characterized in that:
the device comprises a radial positioning assembly and an axial positioning assembly;
the axial assembly comprises a rotating shaft (3) and two positioning disks (5) rotatably sleeved on the rotating shaft (3), and a front mounting edge (a) and a rear mounting edge (c) can be respectively correspondingly clamped into the inner side surfaces of the two positioning disks (5) and are sleeved on the rotating shaft (3) relatively through the positioning disks (5);
the radial positioning assembly comprises a positioning inner sleeve (4) and a positioning outer sleeve;
the guide outer shell (b) is clamped by the positioning inner sleeve (4) and the positioning outer sleeve to form a circular arc sheet-shaped shell structure so as to realize radial positioning of the guide outer shell (b);
during welding, the positioning inner sleeve (4) and the positioning outer sleeve are sleeved on the rotating shaft (3) in a penetrating way and are positioned between the front mounting edge (a) and the rear mounting edge (c), so that two ends of the guide shell (b) are correspondingly connected with the front mounting edge (a) and the rear mounting edge (c) respectively;
the positioning jacket is provided with a notch, and the joint of the front mounting edge (a) and the guide shell (b) can be partially exposed from the notch.
2. The turbine guide shell weld setting apparatus as defined in claim 1, wherein: the welding shaping device also comprises a bottom plate (1), two supporting blocks (2) arranged on the bottom plate (1), and two ends of the rotating shaft (3) are detachably and rotatably arranged at the tops of the two supporting blocks (2);
one end of the rotating shaft (3) penetrates out of the corresponding supporting block (2) and is provided with a rotating shaft hand wheel (14);
the rotating shaft (3) is detachably connected with the rotating shaft hand wheel (14).
3. The turbine guide shell weld setting apparatus as defined in claim 1, wherein: a step shaft (301) is arranged in the middle of the rotating shaft (3), and the width of the step shaft (301) is matched with the width of the guider shell (b);
the two sides of the step shaft (301) are also provided with thread sections (302), the thread sections (302) are in threaded fit with axial limit nuts (7), and when in welding, the two positioning plates (5) can be sleeved on the two sides of the step shaft (301) and apply pressure to the middle of the rotating shaft (3) through the axial limit nuts (7), so that the front mounting edge (a), the guide device shell (b) and the rear mounting edge (c) are in contact.
4. The turbine guide shell weld setting apparatus as defined in claim 2, wherein: the positioning jacket comprises a left positioning plate (601) and a right positioning plate (602);
the left positioning plate (601) and the right positioning plate (602) are oppositely screwed on the left screw rod (8), the left screw rod (8) and the right screw rod (8) are arranged on the bottom plate (1), and the directions of threads on two sides of the left screw rod (8) are opposite to each other so as to drive the left positioning plate (601) and the right positioning plate (602) to move oppositely or reversely;
the opposite surfaces of the left positioning plate (601) and the right positioning plate (602) are respectively provided with an arc-shaped part, and when the left positioning plate (601) and the right positioning plate (602) relatively move until the left positioning plate (601) and the right positioning plate (602) are contacted, the two arc-shaped parts form a circular ring structure with a top notch.
5. The turbine guide shell weld setting apparatus as defined in claim 4, wherein: one end of the left screw rod (8) and one end of the right screw rod (8) are provided with screw rod handwheels (13).
6. The turbine guide shell weld setting apparatus as defined in claim 5, wherein: the bottom plate (1) is also provided with a sliding rail (16), and the bottoms of the left positioning plate (601) and the right positioning plate (602) are respectively provided with limiting blocks corresponding to the sliding rail (16).
7. The turbine guide shell weld setting apparatus as defined in claim 6, wherein: the top of the supporting block (2) is provided with a half hole for supporting the end part of the rotating shaft (3);
the top of the supporting block (2) is also provided with a rotating shaft pressing block (10), one end of the rotating shaft pressing block (10) is hinged to one side of the half hole, and the other end of the rotating shaft pressing block is installed on the other side of the half hole in a locking mode through a rotating shaft pressing screw sleeve (11) and a bolt (12).
8. A welding setting method using the turbine guide casing welding setting device according to any one of claims 5 to 7, characterized in that: the welding shaping method comprises the following steps:
s0, assembling the turbine guide shell welding and shaping device, wherein the assembling is completed so that part of the guide shell (b) is visible at the notch;
s1, spot welding is carried out on a guide device shell at the exposed notch;
s2, rotating the rotating shaft (3) together with the guide device shell integrally by a certain angle, and then spot-welding the guide device shell exposed out of the notch;
s3, repeating the operation until spot welding of the front and rear mounting edge rings of the guide device shell (b) is completed;
s4, after spot welding of the whole circle is finished, rotating a screw hand wheel (13), enabling a left positioning plate (601) and a right positioning plate (602) to move towards the axial outer side of a rotating shaft (3) at the same time, enabling the left positioning plate (601) and the right positioning plate (602) not to withdraw from the inner side end surfaces of a front mounting edge (a) and a rear mounting edge (c), and enabling the left positioning plate (601) and the right positioning plate (602) to be 3-4mm away from a guide shell in the radial direction;
s5, welding the joint positions of the front mounting edge (a) and the guide shell (b) at the top gaps of the left positioning plate (601) and the right positioning plate (602), and simultaneously, rotating a rotating shaft hand wheel (14), rotating the guide by a circle through a rotating shaft (3), and then finishing the welding of the front mounting edge (a) and the guide shell (b); then, according to the operation, the joint of the mounting edge (c) and the guide shell (b) is welded after completion.
9. The welding sizing method of claim 8, wherein: the welding shaping method further comprises the step S6 after the step S5:
s6, after welding is finished, rotating a rotating shaft hand wheel (14), axially moving a left positioning plate (601) and a right positioning plate (602) towards a rotating shaft (3) at the same time, folding the left positioning plate (601) and the right positioning plate (602) until the left positioning plate and the right positioning plate contact the outer wall of a guide shell (b), clamping the guide shell (b) axially by two positioning plates (5), clamping the inner and outer circles of the guide shell by the left positioning plate (602) and a positioning inner sleeve (4), and controlling the appearance of the guide shell (b) by the welding shaping device; thereafter, the guide housing (b) together with the present weld setting apparatus is placed in a high temperature furnace for heat treatment to eliminate welding stress.
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