CN108838604B - Positioning device for assembling and welding supporting leg column assembly of steam generator - Google Patents
Positioning device for assembling and welding supporting leg column assembly of steam generator Download PDFInfo
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- CN108838604B CN108838604B CN201810824920.3A CN201810824920A CN108838604B CN 108838604 B CN108838604 B CN 108838604B CN 201810824920 A CN201810824920 A CN 201810824920A CN 108838604 B CN108838604 B CN 108838604B
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- 238000003466 welding Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 description 10
- 238000000429 assembly Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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 to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
Abstract
The invention discloses a welding positioning device for a support leg column assembly of a steam generator and a welding method adopting the same, wherein the support leg column assembly comprises a fork-shaped seat sleeve (1) and a leg column tube (2), the welding positioning device comprises a clamp assembly (3) and a fixed shaft (4), one end of the clamp assembly (3) is arranged outside the leg column tube (2), the other end of the clamp assembly is arranged outside the fork-shaped seat sleeve (1), and the fixed shaft (4) enables the clamp assembly (3) to be fixedly connected with the fork-shaped seat sleeve (1). The steam generator supporting leg column assembly welding positioning device provided by the invention has the advantages of simple structure, convenience and rapidness in installation and disassembly, and high assembly efficiency and welding quality.
Description
Technical Field
The invention relates to the field of steam generator assembly welding, in particular to a steam generator supporting leg column assembly welding positioning device.
Background
In the vertical support for vertical fixing of the nuclear island main equipment steam generator on site, the leg column component is an important component part of the vertical support, and the leg column component is formed by assembling and welding a fork-shaped seat sleeve and a leg column pipe, wherein the fork-shaped seat sleeve is positioned at two ends of the leg column pipe, and the total length of the fork-shaped seat sleeve is about 4300 mm.
In practical application, in order to meet the good state of the steam generator under the operating condition, the requirements on the manufacturing precision of the leg column assembly are higher, the parallelism of U-shaped grooves of the fork-shaped seat sleeves at the two ends is less than or equal to 0.1mm, and the straightness of the axis of the leg column assembly is less than or equal to 3mm. When the welding manufacture is carried out, a method of leaving a machine allowance for the fork-shaped seat cover is generally adopted, but the purchase cost of raw materials of the fork-shaped seat cover is high, and the machine allowance is too large, so that the manufacturing period is prolonged; or adopt the form of welding transition board to weld fork type seat cover and leg post pipe as an organic wholely, need build-up welding isolation layer be used for the transition board welding on the welded in-process product, if do not have positioning reference can make assembly accuracy harder guarantee, easily with the off set of both ends fork type seat cover, more take time when demolising simultaneously, and polish and get rid of the isolation layer and cause the parent metal injury easily.
Therefore, the problem to be solved at present is to provide a welding positioning device for a steam generator supporting leg column assembly, which improves the assembly accuracy, has fewer welding accessories and low manufacturing cost in the welding process, can realize flat welding and improves the welding quality.
Disclosure of Invention
In order to overcome the problems, the inventor has conducted intensive studies and has devised a vapor generator support leg assembly welding positioning device, which comprises symmetrically arranged adjustable clamp assemblies capable of being tightly connected to the outside of a leg tube and coaxial with the leg tube; the adjustable clamp assembly comprises a fork-shaped seat sleeve U-shaped groove, and is characterized by further comprising a fixed shaft which can position and connect the symmetrically arranged adjustable clamp assemblies at two ends of the fork-shaped seat sleeve U-shaped groove. The device can realize the accurate assembly of fork type seat cover and leg post pipe through mechanical connection's mode, convenient operation is swift, has reduced manufacturing cost, and can realize flat welding station welding, has greatly improved dress and has welded efficiency and quality.
In particular, it is an object of the present invention to provide the following aspects:
in a first aspect, a steam generator support leg assembly welding positioning device is provided, wherein the support leg assembly comprises a fork-shaped seat sleeve 1 and a leg post tube 2, and the welding positioning device comprises a clamp assembly 3 and a fixed shaft 4.
Wherein, one end of the clamp component 3 is arranged outside the leg post tube 2, and the other end is arranged outside the fork-shaped seat cover 1,
preferably, the clip assembly 3 comprises a first clip assembly and a second clip assembly, which are identical in construction, and are cooperatively disposed on the exterior of the support leg assembly, wherein,
the first clamp assembly comprises a clamp 31 and a transition connection support 32, wherein the clamp 31 is arranged outside the leg column pipe 2 and is connected with the clamp of the second clamp assembly in a matched mode, and the clamp assembly 3 is tightly connected with the leg column pipe 2.
Wherein the clip 31 is semi-annular and comprises a plurality of semi-rings which are coaxially arranged,
preferably, the inner diameter of the collar 31 semi-ring structure is consistent with the outer diameter of the leg post tube 2, so that the collar 31 and the collar of the second collar assembly can be coaxial with the leg post tube 2 after being assembled to the outer wall of the leg post tube 2.
Wherein the transition connection support 32 is connected to the edge of the clamp 31, the transition connection support 32 is perpendicular to the plane of the clamp 31,
preferably, the transition support 32 is connected at the midpoint of the circular arc edge of the yoke 31 to facilitate the mating connection with the fork-type seat cover 1.
Wherein a through hole 321 is arranged at one end of the transition connection support 32 far away from the clamp 31,
the through hole 321 is coaxially arranged with two shaft holes arranged at two ends of the U-shaped groove of the fork-shaped seat cover 1.
Wherein the fixed shaft (4) enables the clamp assembly (3) to be fixedly connected with the fork-shaped seat cover (1),
preferably, the fixing shaft 4 is penetrated in the through hole 321 and the two shaft holes of the fork-type seating cover 1, so that the first and second yoke assemblies are symmetrically disposed,
wherein, still be provided with location end cover 5 between fixed axle 4 and fork-shaped seat cover's shaft hole for transitional coupling fixed axle 4 and fork-shaped seat cover.
Wherein, the first clamp assembly further comprises an adjustable beam 33 connected to one surface of the transition connection support 32 near the fork-shaped seat cover 1 for fixing the position of the fork-shaped seat cover 1.
Wherein, a plurality of threaded holes are arranged on the adjustable beam 33, and a fixing piece 6 is arranged in the threaded holes so as to adjust the positions of the fork-type seat cover 1 in the circumferential direction and the horizontal direction.
In a second aspect, there is provided a method of welding a support leg assembly of a steam generator, preferably using the apparatus described above, wherein the method comprises the steps of:
step 1, adopting a supporting leg column assembly welding positioning device to assist in assembling a fork-shaped seat sleeve 1 and a leg column tube 2;
step 2, after the assembly is completed, measuring the assembly precision and adjusting;
step 3, integrally placing the assembled and adjusted supporting leg column assembly and the welding positioning device on the roller frame 7 for welding operation;
and 4, after the welding is finished, disassembling the welding positioning device.
Wherein, the step 1 comprises the following substeps:
step 1-1, placing a second clamp assembly on a horizontal plane, and then placing a leg post tube 2 on the second clamp assembly;
step 1-2, connecting the fork-shaped seat cover 1 at two ends of the leg post tube 2, and adjusting the positions of the fork-shaped seat cover 1 and the second clamp assembly;
step 1-3, fixedly connecting a fixed shaft 4 to a fork-shaped seat cover, and then assembling a first clamp assembly;
step 1-4, adjusting the adjustable cross beam 33 and the fixing piece 6 to enable the fork-shaped seat cover 1 and the leg post tube 2 to be coaxially arranged.
The invention has the beneficial effects that:
(1) The steam generator supporting leg column assembly welding positioning device provided by the invention has the advantages of simple structure, convenience in operation and lower manufacturing cost and use cost;
(2) The steam generator supporting leg column assembly welding positioning device provided by the invention has the advantages that all the assemblies are mechanically connected, the installation and the disassembly are convenient and quick, and the time and the labor are saved;
(3) The steam generator supporting leg column assembly welding positioning device provided by the invention adopts a profiling assembly mode, can realize fixed-length assembly, can finish the assembly precision requirement of products by local fine adjustment, and effectively improves the assembly efficiency;
(4) The welding positioning device for the supporting leg column assembly of the steam generator can directly rotate on the roller frame after the fork-shaped seat sleeve and the leg column tube are fixed, so that the requirements of a flat welding station during welding are met, and the welding quality is effectively improved.
Drawings
FIG. 1 is a schematic view showing the construction of a welding positioning device for a support leg assembly of a steam generator according to the present invention;
fig. 2 shows a schematic structural view of the clip assembly of the present invention.
Reference numerals illustrate:
1-fork type seat cover;
2-leg post tube;
3-a clamp assembly;
31-clamping hoop;
32-transitional connection support;
321-through holes;
33-an adjustable cross beam;
4-fixing shaft;
5-positioning an end cover;
6-fixing piece;
7-roller frames.
Detailed Description
The invention is further described in detail below by means of the figures and examples. The features and advantages of the present invention will become more apparent from the description. Wherein, although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The invention provides a welding positioning device for a supporting leg column assembly of a steam generator, as shown in figures 1-2, the supporting leg column assembly comprises a fork-shaped seat sleeve 1 and a leg column tube 2, the welding positioning device comprises a clamp assembly 3 and a fixed shaft 4,
wherein, clamp subassembly 3 one end sets up in the outside of leg post pipe 2, and one end sets up in the outside of fork-type seat cover 1, fixed axle 4 makes clamp subassembly 3 and fork-type seat cover 1 fixed connection.
According to a preferred embodiment of the present invention, the clip assembly 3 includes a first clip assembly and a second clip assembly, which are identical in structure and are cooperatively disposed on the exterior of the support leg assembly.
In the present invention, as shown in fig. 1, the clip assembly 3 is preferably provided in the upper half as a first clip assembly and in the lower half as a second clip assembly.
In a further preferred embodiment, the first clip assembly includes a clip 31 and a transition support 32,
wherein, clamp 31 sets up outside leg post pipe 2, is connected with the clamp cooperation of second clamp subassembly for clamp subassembly 3 and leg post pipe 2 zonulae occludens.
In a further preferred embodiment, the collar 31 is semi-annular, and comprises a plurality of semi-rings, which are coaxially disposed.
In the present invention, the collar 31 is provided as a plurality of coaxial half rings to increase the stability of the collar assembly to leg tube connection.
According to a preferred embodiment of the present invention, the semi-ring structure of the collar 31 has an inner diameter corresponding to the outer diameter of the leg tube 2, so that the collar 31 and the collar of the second collar assembly can be coaxial with the leg tube 2 after being fitted to the outer wall of the leg tube.
In the invention, the first clamp assembly and the second clamp assembly are preferably formed by integrally processing into a ring shape and then are divided into two semi-ring clamp assemblies along the diameter average, so that the two clamp assemblies can be naturally coaxial with the leg post pipe after being assembled with the leg post pipe.
Wherein, the clamp of the second clamp assembly is the same as the structure of the clamp 31 of the first clamp assembly.
In a further preferred embodiment, bolt holes are provided at the open ends of the clips 31 so that the clip assemblies 3 can be tightly coupled to the outside of the leg tube 2 by bolts after the first and second clip assemblies are assembled.
According to a preferred embodiment of the invention, a transitional support 32 is connected to the edge of the collar 31, the transitional support 32 being perpendicular to the plane of the collar 31.
The transitional coupling support 32 is fixedly connected to the edge of the clip 31, preferably by welding.
In a further preferred embodiment, the transition support 32 is connected at the midpoint of the circular arc of the yoke 31 to facilitate mating connection with the fork-type seat cover 1.
In a still further preferred embodiment, the transition support 32 comprises axial beams and ribs to provide a firm axial force for the connection of the fork-type seat cover 1 and leg tube 2.
Preferably, a through hole 321 is provided at an end of the transition support 32 remote from the clip 31,
the through holes 321 are coaxially arranged with two shaft holes arranged at two ends of the fork-shaped seat cover 1.
Wherein, two shaft holes on the fork-shaped seat cover 1 are also coaxially arranged.
According to a preferred embodiment of the present invention, the fixing shaft 4 is inserted into the through hole 321 and the two shaft holes of the fork-shaped seat cover 1 such that the first and second clip assemblies are symmetrically disposed.
In a further preferred embodiment, a positioning end cap 5 is further arranged between the fixed shaft 4 and the shaft hole of the fork-shaped seat cover for transitional connection of the fixed shaft 4 and the fork-shaped seat cover.
The present inventors have found through studies that the diameter of the shaft hole in the fork-shaped seat cover is much larger than the outer diameter of the fixed shaft 4, and in practical application, if the outer diameter of the fixed shaft 4 is set to be the size matching the diameter of the shaft hole, not only the cost is high, but also the installation operation is not easy, so that the positioning end cover 5 is preferably provided for transition connection in the present invention.
In a still further preferred embodiment, a through hole is provided in the interior of the positioning end cap 5 for a mating connection with the stationary shaft 4, preferably a clearance fit connection.
Preferably, the outer part of the positioning end cover 5 is in clearance fit with the shaft hole of the fork-type seat cover 1.
More preferably, the outer portion of the positioning end cap 5 is configured to be stepped, wherein the portion having the larger cross-sectional area is entirely or partially disposed in the shaft hole of the fork-shaped seat cover 1, and the portion having the smaller cross-sectional area is entirely disposed outside the shaft hole to be coupled with the transition coupling support 32.
Wherein, set up the location end cover 5 and fixed axle 4 and shaft hole and all be clearance fit connection, be favorable to improving fork type seat cover and leg post pipe's positioning accuracy, the clearance is less more accurate in the location.
According to a preferred embodiment of the present invention, threads are provided at both ends of the fixed shaft 4, and are engaged with nuts so that the fixed shaft 4 is fixedly coupled with the transition support 32.
According to a preferred embodiment of the invention, the first clamp assembly further comprises an adjustable cross member 33 connected to a side of the transition support 32 adjacent to the fork-shaped sleeve 1 for fixing the position of the fork-shaped sleeve.
In a further preferred embodiment, the adjustable cross member 33 is "C" shaped and includes a beam portion connected to the transition support 32 and arm portions at opposite ends of the beam portion.
In a still further preferred embodiment, a plurality of threaded holes are provided in the adjustable cross member 33, in which threaded holes the fixing members 6 are mounted to adjust the circumferential and horizontal positions of the fork-shaped seat cover.
Preferably, the threaded holes are provided in the beam portion and the arm portion.
In the invention, after the fork-shaped seat sleeve is connected with the leg post pipe and the first clamp assembly and the second clamp assembly are connected through the fixing shaft, the position of the fork-shaped seat sleeve relative to the leg post pipe needs to be finely adjusted so as to be coaxially connected with the leg post pipe. The position of the fork-shaped seat sleeve in the circumferential direction and the horizontal direction can be finely adjusted by adjusting the fixing piece 6 arranged on the adjustable cross beam.
According to a preferred embodiment of the invention, the fixing element 6 is a jackscrew, one end of which is arranged flat for the engagement of an external tool, and/or
The other end of the jackscrew is provided with a spherical structure, so that the adjustment is convenient and quick.
In a further preferred embodiment, the central portion of the jackscrew is provided with threads to mate with threaded holes on the adjustable cross member 33, preferably T-shaped threads.
The invention also provides a method for welding a support leg assembly of a steam generator, preferably by using the device shown in figures 1-2, wherein the method comprises the following steps:
and step 1, adopting a supporting leg column assembly welding positioning device to assist in assembling the fork-shaped seat sleeve 1 and the leg column tube 2.
Wherein, the step 1 comprises the following substeps:
in step 1-1, a second clamp assembly is placed on a horizontal surface, and then the leg string tube 2 is placed on the second clamp assembly.
In the invention, the clamp assembly positioned below the leg post pipe is set as a second clamp assembly, and the upper part is set as a first clamp assembly.
The second clamp assembly is placed at a preset position of the horizontal plane, the semi-annular opening end of the clamp faces upwards, the transitional connection support is close to the horizontal plane, and the leg column pipe is arranged in the semi-annular clamp of the second clamp assembly in a matched mode.
And step 1-2, connecting the fork-shaped seat cover 1 at two ends of the leg post tube 2, and adjusting the positions of the fork-shaped seat cover 1 and the second clamp assembly.
In the invention, after the fork-shaped seat sleeve is connected with the leg post pipe, the shaft hole of the fork-shaped seat sleeve is adjusted to be coaxial with the through hole on the transitional connection support in the second clamp assembly, so that the fixing shaft can be conveniently installed.
And step 1-3, fixedly connecting the fixed shaft 4 to the fork-shaped seat cover, and then assembling the first clamp assembly.
The fixed shaft 4 is in transitional connection with two coaxial holes of the U-shaped groove of the fork-shaped seat sleeve through a positioning end cover 5, and the bottom end of the fixed shaft 4 is connected with the second clamp assembly into a whole through a nut; the top end of the fixed shaft 4 passes through the through hole 321 of the first clamp assembly and is connected with the first clamp assembly into a whole; and tightly matching the clamp of the first clamp assembly with the clamp of the second clamp assembly to be connected to the outer wall of the leg column pipe.
In the invention, after the fork-shaped seat sleeve is connected with the leg post pipe, the positions of the first clamp assembly and the second clamp assembly are adjusted to be symmetrical structures through the fixing shaft, and the clamp assemblies and the leg post pipe are coaxially arranged.
Step 1-4, adjusting the adjustable cross beam 33 and the fixing piece 6 to enable the fork-shaped seat cover 1 and the leg post tube 2 to be coaxially arranged.
In the present invention, in order to secure the straight parallelism of the support leg assembly, it is necessary to adjust the fork-shaped seat cover coaxially with the leg tube, wherein the fork-shaped seat cover can be easily adjusted in the horizontal direction and the circumferential direction by the fixing member 6 located on the adjustable cross member 33.
And 2, measuring the assembly precision after the assembly is completed, and adjusting the assembly precision.
After the leg post tube and the fork-shaped seat sleeves at the two ends are assembled, the assembly dimensional accuracy is measured, and the adjustment is carried out according to the measurement result, so that the parallelism of U-shaped grooves of the fork-shaped seat sleeves at the two ends is less than or equal to 0.1mm, and the straightness of the axis of the assembled leg post assembly is less than or equal to 3mm.
The welding positioning device is mechanically connected with the leg column assembly, so that the operation is convenient when the positions of the leg column tube and the fork-shaped seat sleeve are adjusted.
And 3, integrally placing the assembled and adjusted supporting leg column assembly and the welding positioning device on the roller frame 7, and performing welding operation.
In the invention, the leg column assembly and the device after assembly and adjustment are integrally hoisted to the roller frame 7, and the welding operation can be implemented along with the rotation of the roller frame.
The assembly welding positioning device can stably and accurately position the fork-shaped seat sleeve and the leg column tube, and the welding station can be locked at the flat welding position, so that the condition of all-position welding is completely avoided, and the welding quality is improved.
And 4, after the welding is finished, disassembling the welding positioning device.
In the invention, the welding positioning device is mechanically connected with each component, and after welding is finished, only bolts and nuts at the connecting positions of each component are required to be loosened, so that the working efficiency is obviously improved.
Examples
Example 1
The leg column tube of the steam generator (taking the Hua Long Yi steam generator as an example) and the fork-shaped seat sleeves at the two ends are welded, and the device shown in fig. 1-2 is adopted, and the method comprises the following steps:
(1) Placing a second clamp assembly (lower half clamp assembly) on a horizontal plane, and then placing a leg post tube thereon so that the leg post tube is matched and arranged in the semi-annular clamp;
(2) The fork-shaped seat sleeves are respectively connected to the two ends of the leg column tube, and the shaft holes on the U-shaped grooves of the fork-shaped seat sleeves are adjusted to be coaxial with the through holes on the transition connection support in the second clamp assembly;
(3) The fixed shaft penetrates through two shaft holes of the U-shaped groove of the fork-shaped seat sleeve and the through hole of the second clamp assembly, and a nut is arranged at the bottom end of the fixed shaft and is connected with the second clamp assembly into a whole; the top end of the fixed shaft penetrates through the through hole of the first clamp assembly and is connected with the first clamp assembly, and the clamp of the first clamp assembly and the clamp of the second clamp assembly are tightly connected to the outside of the leg column tube through bolts, so that the assembled clamp assembly and the leg column tube are coaxial;
(4) Adjusting a jackscrew arranged on the adjustable cross beam to enable the leg column assembly and the fork-shaped seat sleeve to be coaxial;
(5) After the assembly is completed, measuring the mounting precision of the fork-shaped seat sleeve and the leg column tube, and displaying that the parallelism of U-shaped grooves of the fork-shaped seat sleeves at two ends is less than or equal to 2mm, and the axis coaxiality of the assembled leg column assembly is less than or equal to 2mm, wherein the assembly precision is adjusted to meet the manufacturing precision requirement of the leg column assembly;
(6) Integrally hoisting the assembled and adjusted leg column components and the device on a roller frame, and carrying out flat welding along with the rotation of the roller frame;
(7) After the welding is finished, the jackscrews on the adjustable cross beam are loosened, nuts between the first clamp assembly and the second clamp assembly and nuts at two ends of the fixed shaft are disassembled, and the positioning end covers are disassembled, so that the leg column assembly with the welded end can be obtained.
The device is provided with 1 set of leg column components, and the welding is started from the installation to the completion of the adjustment, which takes about 4 hours, and the device realizes the assembly and positioning of products in a mechanical connection mode, so that the working efficiency is improved by at least ten times compared with the rotating and matching mode of welding temporary accessories on the products in the prior art; and the base metal of the product is not damaged due to mechanical connection.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the azimuth or positional relationship in the operation state of the present invention, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected in common; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the invention can be subjected to various substitutions and improvements, and all fall within the protection scope of the invention.
Claims (8)
1. The welding positioning device for the support leg column assembly of the steam generator is characterized by comprising a fork-shaped seat sleeve (1) and a leg column tube (2), and comprises a clamp assembly (3) and a fixed shaft (4);
one end of the clamp assembly (3) is arranged outside the leg post tube (2), the other end of the clamp assembly is arranged outside the fork-shaped seat sleeve (1), the clamp assembly (3) comprises a first clamp assembly and a second clamp assembly which have the same structure and are matched with each other to be arranged outside the supporting leg post assembly,
the first clamp assembly comprises a clamp (31) and a transitional connection support (32), the clamp (31) is arranged outside the leg column tube (2) and is connected with the clamp of the second clamp assembly in a matched mode, and the clamp assembly (3) is tightly connected with the leg column tube (2);
the transition connection support (32) is connected to the edge of the clamp (31), and the transition connection support (32) is perpendicular to the plane of the clamp (31);
a through hole (321) is formed in one end, far away from the clamp (31), of the transition connection support (32), and the through hole (321) and two shaft holes formed in two ends of a U-shaped groove of the fork-shaped seat sleeve (1) are coaxially arranged;
the fixed shaft (4) enables the clamp assembly (3) to be fixedly connected with the fork-shaped seat cover (1).
2. The device according to claim 1, characterized in that the clamp (31) is semi-annular, comprising a plurality of semi-rings, which are coaxially arranged.
3. Device according to claim 2, characterized in that the collar (31) has an inner diameter corresponding to the outer diameter of the leg tube (2) in a half-ring configuration such that the collar (31) can be coaxial with the leg tube (2) after fitting the collar of the second collar assembly to the outer wall of the leg tube (2).
4. Device according to claim 1, characterized in that the transitional coupling support (32) is connected at the midpoint of the circular arc edge of the clip (31) for a mating connection with the fork-shaped seat cover (1).
5. The device according to one of claims 1 to 4, characterized in that the first clamp assembly further comprises an adjustable cross member (33) connected to a side of the transition support (32) adjacent to the fork-shaped seat (1) for fixing the position of the fork-shaped seat (1).
6. Device according to claim 5, characterized in that a plurality of threaded holes are provided in the adjustable cross-piece (33), in which threaded holes the fixing elements (6) are mounted for adjusting the position of the fork-shaped seat (1) in the circumferential and horizontal direction.
7. A method of welding a support leg assembly of a steam generator using the apparatus of any one of claims 1 to 6, the method comprising the steps of:
step 1, adopting a supporting leg column assembly welding positioning device to assist in assembling a fork-shaped seat sleeve (1) and a leg column tube (2);
step 2, after the assembly is completed, measuring the assembly precision and adjusting;
step 3, integrally placing the assembled and adjusted supporting leg column assembly and the welding positioning device on a roller frame (7) for welding operation;
and 4, after the welding is finished, disassembling the welding positioning device.
8. The method according to claim 7, wherein said step 1 comprises the sub-steps of:
step 1-1, placing a second clamp assembly on a horizontal plane, and then placing a leg column pipe (2) on the second clamp assembly;
step 1-2, connecting the fork-shaped seat cover (1) to two ends of the leg column tube (2), and adjusting the positions of the fork-shaped seat cover (1) and the second clamp assembly;
step 1-3, fixedly connecting a fixed shaft (4) to a fork-shaped seat cover, and then assembling a first clamp assembly;
and step 1-4, adjusting the adjustable cross beam (33) and the fixing piece (6) to enable the fork-shaped seat sleeve (1) and the leg column tube (2) to be coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824920.3A CN108838604B (en) | 2018-07-25 | 2018-07-25 | Positioning device for assembling and welding supporting leg column assembly of steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824920.3A CN108838604B (en) | 2018-07-25 | 2018-07-25 | Positioning device for assembling and welding supporting leg column assembly of steam generator |
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| Publication Number | Publication Date |
|---|---|
| CN108838604A CN108838604A (en) | 2018-11-20 |
| CN108838604B true CN108838604B (en) | 2023-10-27 |
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| CN201810824920.3A Active CN108838604B (en) | 2018-07-25 | 2018-07-25 | Positioning device for assembling and welding supporting leg column assembly of steam generator |
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| CN208600957U (en) * | 2018-07-25 | 2019-03-15 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of steam generator supporting leg column assembly welding equipment positioning device |
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| CN203265983U (en) * | 2012-12-19 | 2013-11-06 | 中国核工业第五建设有限公司 | Pairing tool for main cooling agent main pipelines of nuclear power station |
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| US9556690B1 (en) * | 2015-05-13 | 2017-01-31 | Alpha Dog Oilfield Tools | Elevator link extension systems |
| CN104816111A (en) * | 2015-05-27 | 2015-08-05 | 上海电气核电设备有限公司 | Adjusting tool for welding main pump casing of nuclear steam generator |
| CN105729028A (en) * | 2016-03-26 | 2016-07-06 | 国网山东省电力公司莱州市供电公司 | Electric wire post welding device and working method thereof |
| CN205733633U (en) * | 2016-05-09 | 2016-11-30 | 黄光明 | Fixture for cylinder assembly welding |
| CN105823355A (en) * | 2016-05-12 | 2016-08-03 | 哈电集团（秦皇岛）重型装备有限公司 | Vertical type sleeving device of pipe bundle assembly of heavy floating head heat exchanger |
| CN206305581U (en) * | 2016-12-06 | 2017-07-07 | 上海国康钢结构工程有限公司 | Gas-tpe fitting and tracheae adapter assembly |
| CN207104159U (en) * | 2017-06-27 | 2018-03-16 | 中国航发常州兰翔机械有限责任公司 | A kind of combustion chamber flame drum prevapourising pipe installs fixture |
| CN208600957U (en) * | 2018-07-25 | 2019-03-15 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of steam generator supporting leg column assembly welding equipment positioning device |
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