CN115488476B - Device and method for welding studs on inner wall of vacuum chamber of tokamak device - Google Patents
Device and method for welding studs on inner wall of vacuum chamber of tokamak device Download PDFInfo
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- CN115488476B CN115488476B CN202211055460.5A CN202211055460A CN115488476B CN 115488476 B CN115488476 B CN 115488476B CN 202211055460 A CN202211055460 A CN 202211055460A CN 115488476 B CN115488476 B CN 115488476B
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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
- B23K9/00—Arc welding or cutting
- B23K9/20—Stud welding
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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 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
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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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Abstract
The application belongs to the technical field of nuclear fusion, and particularly relates to a device and a method for welding studs on the inner wall of a vacuum chamber of a tokamak device; the device comprises: the positioning hole plate, the fixed support and the positioning pin; fixed brackets are fixed at two ends of the positioning pore plate; the shape of the fixed bracket is matched with that of a window flange of the vacuum chamber, and a threaded hole is formed in the fixed bracket and is used for fixing the fixed bracket to the window flange of the vacuum chamber; the positioning hole plate is provided with at least one positioning through hole, the position of the positioning through hole corresponds to the welding position, and the positioning through hole is used for the welding gun head to be inserted in the welding process of the welding stud so as to position the welding stud; the locating pin is arranged on the locating hole plate and used for placing the target ball measured by the laser tracker. Positioning the positioning through hole through the positioning hole plate, and positioning the welding gun head through the positioning through hole, so that the welding stud is positioned. When welding, only the welding gun head is required to penetrate into the positioning through hole for welding operation, and the situation of offset welding or stud deflection can not occur.
Description
Technical Field
The application belongs to the technical field of nuclear fusion, and particularly relates to a device and a method for welding studs on the inner wall of a vacuum chamber of a Tokamak device.
Background
A divertor, a first wall, a restrictor, an air supply system, a glow discharge cleaning system, a plasma diagnostic system, etc. will be installed inside the vacuum chamber of the nuclear fusion device. The permanent support of these parts mainly adopts door type support piers and welding studs. Although the introduction of stud welding can solve the problem of stud welding, the vacuum chamber material is alloy Inconel625, so that the welding stud material needs to be carefully selected in order to ensure the quality of the welding seam and meet the requirement of vacuum cleanliness.
At present, stud welding still stays on the traditional mode of manual scribing and dotting positioning, measurement and scribing are performed through positioning references such as round holes on workpieces, time and labor are wasted, and deviation is easy to occur. When the welding gun is operated to weld, the stud is easy to deviate from the position to be welded or skew occurs, so that the positioning of the stud is inaccurate or the angle precision of the stud and a workpiece is poor. In addition, because the vacuum chamber is a double-layer thin-wall all-welded annular structure with a D-shaped section, the welding positioning difficulty is higher, and the positioning precision requirement can not be met without the help of an accurate welding positioning tool and high-precision measuring equipment.
Disclosure of Invention
The application aims to provide a device and a method for welding a stud on the inner wall of a vacuum chamber of a tokamak device, which solve the problems that in the prior art, when a welding gun is operated to weld, the stud is easy to deviate from a position to be welded or skew occurs, so that the positioning of the stud is inaccurate or the angle precision between the stud and a workpiece is poor.
The technical scheme for realizing the purpose of the application comprises the following steps:
an embodiment of the present application provides, in a first aspect, an apparatus for stud welding on an inner wall of a vacuum chamber of a tokamak apparatus, the apparatus including: the positioning hole plate, the fixed support and the positioning pin;
the fixed brackets are fixed at two ends of the positioning pore plate; the shape of the fixed bracket is matched with that of a window flange of the vacuum chamber, and a threaded hole is formed in the fixed bracket and is used for fixing the fixed bracket to the window flange of the vacuum chamber;
the positioning hole plate is provided with at least one positioning through hole, the position of the positioning through hole corresponds to the welding position, and the positioning through hole is used for the insertion of a welding gun head in the welding process of the welding stud so as to position and weld the welding stud;
the locating pin is arranged on the locating hole plate and used for placing a target ball measured by a laser tracker.
Optionally, the outer diameter of the locating pin is the same as that of the welding gun head, and a conical hole is formed in one end of the locating pin so as to put the locating pin into the laser tracker for measuring the target ball.
Optionally, the positioning through hole is in clearance fit with the welding gun head, and the clearance is smaller than 0.1mm.
Optionally, the welding stud includes: a thread part and a polish rod part which are connected with each other;
the diameter of the polish rod part is smaller than or equal to the outer diameter of the threaded part, a conical arc striking part is arranged on the end face of the polish rod part in a protruding mode, and an arc striking knot is machined on the arc striking part.
Optionally, the arc starting part is provided with a bottom side surface inclined relative to the horizontal plane, and the inclination angle of the bottom side surface relative to the horizontal plane is 5-10 degrees.
Optionally, the outer diameter of the threaded part is 5-14 mm; the diameter of the polish rod part is 5-12 mm; the size of the striking junction is
Optionally, the welding stud is made of 316L stainless steel.
Optionally, the device is made of a material different from that of the vacuum chamber and the welding stud.
Optionally, the device is made of a material with better conductivity than the vacuum chamber and the welding stud or an insulating material.
Optionally, the vacuum chamber and the welding stud are made of Inconel625 material and 316L material respectively, and the device is made of aluminum or copper.
A second aspect of the embodiment of the present application provides a method for welding a stud on an inner wall of a vacuum chamber of a tokamak device, which is applied to any one of the devices for welding a stud on an inner wall of a vacuum chamber of a tokamak device provided in the first aspect of the embodiment of the present application, and the method includes:
any device for welding studs on the inner wall of a vacuum chamber of a tokamak device provided by the first aspect of the embodiment of the application is initially installed at the corresponding position of the vacuum chamber, and then the positioning pin is placed into the positioning through hole on the positioning hole plate;
the method comprises the steps of placing a laser tracker measuring target ball into a positioning pin, taking an axis of a pre-established welding stud as a positioning reference, and observing the position deviation between the positioning and the axis in real time in measuring software, so as to adjust the position of a device for welding the stud on the inner wall of a vacuum chamber of a Tokamak device until the positioning accuracy requirement of the welding stud is met;
and when the stud is welded, the welding stud is clamped by using a welding gun head and inserted into the positioning through hole for welding.
Optionally, the axis of the welding stud is obtained by:
according to the installation positioning precision of the components in the vacuum chamber, the station measuring position and the station measuring number of the laser tracker, enough measuring datum points are distributed in the vacuum chamber;
establishing measuring stations of a laser tracker in and out of a vacuum chamber, leveling each measuring station and measuring all measuring datum points which can be seen by the measuring station;
carrying out space joint precision control network adjustment calculation on the measurement data of all the measuring stations;
performing best fitting on the measurement datum point calculated by the space joint precision control network adjustment and the measurement datum point of the Tokamak device measurement datum network, so as to transfer the Tokamak device measurement datum network into a vacuum chamber, and establishing a vacuum chamber measurement datum network;
establishing a measuring station of a laser tracker near a welding position of a welding stud in a vacuum chamber, leveling the laser tracker and measuring enough measuring reference points;
performing best fitting on the measured reference points and the measured reference points of the vacuum chamber measurement reference network to finish positioning of the laser tracker under the assembled coordinate system of the Tokamak device;
and introducing a welding stud CAD model into laser tracker measurement software, and adjusting to a theoretical welding position to obtain the axis of the welding stud.
The beneficial technical effects of the application are as follows:
according to the device and the method for welding the stud on the inner wall of the vacuum chamber of the tokamak device, the positioning through holes are positioned through the positioning hole plates, and the welding gun head is positioned through the positioning through holes, so that the welding stud is positioned. When welding, only the welding gun head needs to penetrate into the positioning through hole for welding operation, the situation of deflection welding or stud deflection can not occur, the position where stud welding needs to be welded is accurately found, reworking caused by inaccurate positioning is reduced, the problem that the stud is accurately positioned on the inner wall of the double-layer thin-wall D-shaped section vacuum chamber is solved, the welding process is simple, convenient, quick and reliable, the welding precision is high, the appearance is good, the efficiency and the welding stability are improved, the quick plugging positioning mechanism is adopted, the structure is simple, the modular design is realized, the disassembly and the maintenance are convenient, the positioning is accurate, and the welding efficiency and the quality of workpieces are improved.
Drawings
Fig. 1 is a schematic structural diagram of a device for welding studs on the inner wall of a vacuum chamber of a tokamak device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an apparatus for stud welding on the inner wall of a vacuum chamber of a Tokamak apparatus according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a positioning pin in a device for welding studs on the inner wall of a vacuum chamber of a Tokamak device according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the installation of a locating pin and a measuring target ball in a device for welding studs on the inner wall of a vacuum chamber of a Tokamak device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a welding stud in a device for welding a stud on an inner wall of a vacuum chamber of a tokamak device according to an embodiment of the present application;
FIG. 6 is an axial view of a weld stud in an apparatus for welding studs on the inner wall of a vacuum chamber of a tokamak device according to an embodiment of the present application;
FIG. 7 is a flow chart of a method for welding studs on the inner wall of a vacuum chamber of a Tokamak device according to an embodiment of the present application;
fig. 8 is a schematic diagram of measurement positioning of a method for welding studs on the inner wall of a vacuum chamber of a tokamak device according to an embodiment of the present application.
In the figure:
1-positioning an orifice plate; 11-positioning through holes;
2-fixing a bracket; 21-a threaded hole;
3-locating pins; 31-a tapered hole;
4-a vacuum chamber; 41-a window flange;
5-welding a stud; 51-a threaded portion; 52-a polish rod part; 53-arcing section; 54-arc striking junction;
6-a laser tracker; 61-measuring target ball.
Detailed Description
In order to enable those skilled in the art to better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the embodiments described below are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are within the scope of the present application based on the embodiments described herein.
Referring to fig. 1, the structure of a device for welding studs on the inner wall of a vacuum chamber of a tokamak device according to an embodiment of the present application is shown.
The embodiment of the application provides a device for welding studs on the inner wall of a vacuum chamber of a tokamak device, which comprises: a positioning hole plate 1, a fixed bracket 2 and a positioning pin 3;
fixed brackets 2 are fixed at two ends of the positioning pore plate 1; the fixing bracket 2 is matched with the window flange 41 of the vacuum chamber 4 in shape, and is provided with a threaded hole 21 for fixing the fixing bracket 2 to the window flange 41 of the vacuum chamber 4, as shown in fig. 2;
the positioning hole plate 1 is provided with at least one positioning through hole 11, and the position of the positioning through hole 11 corresponds to the welding position and is used for inserting a welding gun head in the welding process of the welding stud 5 to position the welding stud 5;
the locating pin 3 is arranged on the locating hole plate 1 and is used for placing a measuring target ball of a laser tracker.
In the embodiment of the application, the fixed support 2 and the positioning hole plate 1 are in a split structure, so that the processing requirements of the fixed support 2 and the positioning hole plate 1 are reduced, the connection and fixation can be conveniently realized through the screws, the fixed support 2 and the positioning hole plate 1 can be replaced as required, and the universality and the utilization rate of the device are improved. The positioning through hole 11 is positioned by the positioning hole plate 1, and the welding gun head is positioned by the positioning through hole 11, thereby positioning the welding stud 5. When welding, only the welding gun head needs to penetrate into the positioning through hole 11 for welding operation, the situation of deflection welding or stud deflection can not occur, the position of the stud 5 to be welded is accurately found, reworking caused by inaccurate positioning is reduced, the problem that the stud is accurately positioned on the inner wall of the double-layer thin-wall D-shaped section vacuum chamber is solved, the welding process is simple, convenient, quick and reliable, the welding precision is high, the appearance is good, the efficiency and the welding stability are improved, the quick splicing positioning mechanism is adopted, the structure is simple, the modular design is realized, the disassembly and the maintenance are convenient, the positioning is accurate, and the welding efficiency and the quality of workpieces are improved.
In some possible implementations of the embodiment of the present application, as shown in fig. 3, the locating pin 3 has the same outer diameter as the welding gun head, and a tapered hole 31 is formed at one end thereof to receive a measuring target ball 61 of the laser tracker, as shown in fig. 4.
In one example, the locating through hole 11 is in clearance fit with the torch head with a clearance of less than 0.1mm.
In some possible implementations of the embodiments of the present application, as shown in fig. 5, the welding stud 5 includes: a screw portion 51 and a polish rod portion 52 connected to each other;
the diameter of the polish rod part 52 is smaller than or equal to the outer diameter of the threaded part 51, a conical arcing part 53 is arranged on the end surface of the polish rod part 52 in a protruding mode, and an arcing knot 54 is machined on the arcing part 53.
In one example, the arcing section 53 has a bottom side surface inclined with respect to the horizontal plane, and the inclination angle of the bottom side surface with respect to the horizontal plane is 5 ° to 10 °, as shown in fig. 6.
In another example, the outer diameter of the threaded portion 51 is 5 to 14mm; the diameter of the polish rod part 52 is 5-12 mm; the striking knot 54 is of the size of
Because the material of the vacuum chamber 4 is Inconel625, in order to ensure that the welding seam meets the requirement of vacuum cleanliness, in practical application, the welding stud 5 can be made of 316L stainless steel.
In some possible implementations of the application, the material of the device is different from that of the vacuum chamber 4 and the welding stud 5, so that an arc is prevented from forming between the device and the vacuum chamber 4 or the welding stud 5 during welding, and the device and the vacuum chamber 4 or the welding stud 5 are mistakenly welded together, so that the device can be conveniently removed after the welding stud 5 is welded.
In one example, the device is made of a material that is better conductive than the vacuum chamber 4 and the weld stud 5 or an insulating material.
As an example, the vacuum chamber 4 and the welding stud 5 are made of Inconel625 material and 316L material, respectively, and the material of the device is aluminum or copper.
According to the device for welding the stud on the inner wall of the vacuum chamber of the tokamak device, the positioning through holes are positioned through the positioning hole plates, and the welding gun head is positioned through the positioning through holes, so that the welding stud is positioned. When welding, only the welding gun head needs to penetrate into the positioning through hole for welding operation, the situation of deflection welding or stud deflection can not occur, the position where stud welding needs to be welded is accurately found, reworking caused by inaccurate positioning is reduced, the problem that the stud is accurately positioned on the inner wall of the double-layer thin-wall D-shaped section vacuum chamber is solved, the welding process is simple, convenient, quick and reliable, the welding precision is high, the appearance is good, the efficiency and the welding stability are improved, the quick plugging positioning mechanism is adopted, the structure is simple, the modular design is realized, the disassembly and the maintenance are convenient, the positioning is accurate, and the welding efficiency and the quality of workpieces are improved.
Based on the device for welding the inner wall stud of the vacuum chamber of the tokamak device provided by the embodiment, the embodiment of the application also provides a method for welding the inner wall stud of the vacuum chamber of the tokamak device, which is applied to any device for welding the inner wall stud of the vacuum chamber of the tokamak device provided by the embodiment.
Referring to fig. 7, a flow chart of a method for welding studs on the inner wall of a vacuum chamber of a tokamak device according to an embodiment of the present application is shown.
The embodiment of the application provides a method for welding studs on the inner wall of a vacuum chamber of a tokamak device, which comprises the following steps:
s701: any one of the devices for welding studs on the inner wall of the vacuum chamber of the tokamak device provided by the embodiment is initially installed at the corresponding position of the vacuum chamber, and then a positioning pin is placed in a positioning through hole on a positioning hole plate;
s702: the method comprises the steps of placing a laser tracker measuring target ball into a locating pin, taking an axis of a pre-established welding stud as a locating reference, observing the position deviation between the locating and the axis in real time in measuring software, and adjusting the position of a device for welding the stud on the inner wall of a vacuum chamber of a Tokamak device until the requirement of the welding stud on the locating precision is met;
s703: when the stud welding is carried out, the welding stud is clamped by the welding gun head and inserted into the positioning through hole for welding.
In some possible implementations of the embodiments of the present application, the axis of the weld stud is obtained by:
according to the installation positioning precision of the components in the vacuum chamber, the station measuring position and the station measuring number of the laser tracker, enough measuring datum points are distributed in the vacuum chamber;
establishing measuring stations of a laser tracker in and out of a vacuum chamber, leveling each measuring station and measuring all measuring datum points which can be seen by the measuring station;
carrying out space joint precision control network (unified spatial metrology network, USMN) adjustment calculation on measurement data of all measuring stations;
performing best fitting on the measurement datum point calculated by the space joint precision control network adjustment and the measurement datum point of the Tokamak device measurement datum network, so as to transfer the Tokamak device measurement datum network into a vacuum chamber, and establishing a vacuum chamber measurement datum network;
establishing a measuring station of a laser tracker near a welding position of a welding stud in a vacuum chamber, leveling the laser tracker 6 and measuring enough measuring reference points, as shown in fig. 8;
performing best fitting on the measured reference points and the measured reference points of the vacuum chamber measurement reference network to finish positioning of the laser tracker under the assembled coordinate system of the Tokamak device;
and (3) introducing a CAD model of the welding stud into the measuring software of the laser tracker and adjusting the CAD model to a theoretical welding position to obtain the axis of the welding stud.
According to the method for welding the studs on the inner wall of the vacuum chamber of the tokamak device, the positioning through holes are positioned through the positioning hole plates, and the welding gun head is positioned through the positioning through holes, so that the welding studs are positioned. When welding, only the welding gun head needs to penetrate into the positioning through hole for welding operation, the situation of deflection welding or stud deflection can not occur, the position where stud welding needs to be welded is accurately found, reworking caused by inaccurate positioning is reduced, the problem that the stud is accurately positioned on the inner wall of the double-layer thin-wall D-shaped section vacuum chamber is solved, the welding process is simple, convenient, quick and reliable, the welding precision is high, the appearance is good, the efficiency and the welding stability are improved, the quick plugging positioning mechanism is adopted, the structure is simple, the modular design is realized, the disassembly and the maintenance are convenient, the positioning is accurate, and the welding efficiency and the quality of workpieces are improved.
The present application has been described in detail with reference to the drawings and the embodiments, but the present application is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. The application may be practiced otherwise than as specifically described.
Claims (12)
1. A device for stud welding of an inner wall of a vacuum chamber of a tokamak device, the device comprising: the positioning hole plate, the fixed support and the positioning pin;
the fixed brackets are fixed at two ends of the positioning pore plate; the shape of the fixed bracket is matched with that of a window flange of the vacuum chamber, and a threaded hole is formed in the fixed bracket and is used for fixing the fixed bracket to the window flange of the vacuum chamber;
the positioning hole plate is provided with at least one positioning through hole, the position of the positioning through hole corresponds to the welding position, and the positioning through hole is used for the insertion of a welding gun head in the welding process of the welding stud so as to position and weld the welding stud;
the locating pin is arranged on the locating hole plate and used for placing a target ball measured by a laser tracker.
2. The apparatus for stud welding of the inner wall of a vacuum chamber of a tokamak device as claimed in claim 1, wherein the positioning pin has the same outer diameter as the welding gun head, and wherein a tapered hole is formed at one end thereof to receive the laser tracker measuring target ball.
3. The device for stud welding of the inner wall of a vacuum chamber of a tokamak device as claimed in claim 1, wherein the positioning through hole is in clearance fit with the welding gun head, and the clearance is less than 0.1mm.
4. The apparatus for stud welding of the inner wall of a vacuum chamber of a tokamak device as claimed in claim 1, wherein the welding stud comprises: a thread part and a polish rod part which are connected with each other;
the diameter of the polish rod part is smaller than or equal to the outer diameter of the threaded part, a conical arc striking part is arranged on the end face of the polish rod part in a protruding mode, and an arc striking knot is machined on the arc striking part.
5. The apparatus for stud welding of the inner wall of a vacuum chamber of a tokamak device as claimed in claim 4, wherein the arcing part has a bottom side inclined with respect to a horizontal plane, and the bottom side is inclined with respect to the horizontal plane at an angle of 5 ° to 10 °.
6. The device for welding the inner wall stud of the vacuum chamber of the tokamak device as claimed in claim 4, wherein the outer diameter of the screw part is 5-14 mm; the diameter of the polish rod part is 5-12 mm; the saidThe size of the striking arc junction is
7. The apparatus for welding studs on the inner wall of a vacuum chamber of a tokamak device as recited in claim 4, wherein said welding studs are made of 316L stainless steel.
8. The apparatus for stud welding of the inner wall of a vacuum chamber of a tokamak device of claim 1, wherein the apparatus is of a different material than the vacuum chamber and the weld stud.
9. The apparatus for stud welding of the inner wall of a vacuum chamber of a tokamak device of claim 8, wherein the apparatus is made of a material having superior electrical conductivity to the vacuum chamber and the welding stud or is made of an insulating material.
10. The device for welding studs on the inner wall of a vacuum chamber of a tokamak device according to claim 9, wherein the vacuum chamber and the welding studs are made of Inconel625 material and 316L material respectively, and the device is made of aluminum or copper.
11. A method for tokamak device vacuum chamber inner wall stud welding, characterized by being applied to the device for tokamak device vacuum chamber inner wall stud welding as claimed in any one of claims 1 to 10, comprising:
preliminarily installing the device for stud welding on the inner wall of the vacuum chamber of the tokamak device in the corresponding position of the vacuum chamber, and then placing the positioning pin into the positioning through hole on the positioning hole plate;
the method comprises the steps of placing a laser tracker measuring target ball into a positioning pin, taking an axis of a pre-established welding stud as a positioning reference, and observing the position deviation between the positioning and the axis in real time in measuring software, so as to adjust the position of a device for welding the stud on the inner wall of a vacuum chamber of a Tokamak device until the positioning accuracy requirement of the welding stud is met;
and when the stud is welded, the welding stud is clamped by using a welding gun head and inserted into the positioning through hole for welding.
12. The method for vacuum chamber inner wall stud welding of a tokamak device of claim 11, wherein the axis of the welding stud is obtained by:
according to the installation positioning precision of the components in the vacuum chamber, the station measuring position and the station measuring number of the laser tracker, enough measuring datum points are distributed in the vacuum chamber;
establishing measuring stations of a laser tracker in and out of a vacuum chamber, leveling each measuring station and measuring all measuring datum points which can be seen by the measuring station;
carrying out space joint precision control network adjustment calculation on the measurement data of all the measuring stations;
performing best fitting on the measurement datum point calculated by the space joint precision control network adjustment and the measurement datum point of the Tokamak device measurement datum network, so as to transfer the Tokamak device measurement datum network into a vacuum chamber, and establishing a vacuum chamber measurement datum network;
establishing a measuring station of a laser tracker near a welding position of a welding stud in a vacuum chamber, leveling the laser tracker and measuring enough measuring reference points;
performing best fitting on the measured reference points and the measured reference points of the vacuum chamber measurement reference network to finish positioning of the laser tracker under the assembled coordinate system of the Tokamak device;
and introducing a welding stud CAD model into laser tracker measurement software, and adjusting to a theoretical welding position to obtain the axis of the welding stud.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211055460.5A CN115488476B (en) | 2022-08-31 | 2022-08-31 | Device and method for welding studs on inner wall of vacuum chamber of tokamak device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211055460.5A CN115488476B (en) | 2022-08-31 | 2022-08-31 | Device and method for welding studs on inner wall of vacuum chamber of tokamak device |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7302249D0 (en) * | 1972-03-30 | 1974-08-15 | Union Carbide Corp | ELECTRONIC GAS CAUSED WITH NUCLEUS, FOR ARC WELDING WITH PROT |
| JPH02298890A (en) * | 1989-05-15 | 1990-12-11 | Japan Atom Energy Res Inst | Assembling method for vacuum chamber and nuclear fusion device |
| KR20080063910A (en) * | 2007-01-03 | 2008-07-08 | 한국기초과학지원연구원 | Assembly structure of superconduction tokamak vacuum vessel |
| CN203526825U (en) * | 2013-09-26 | 2014-04-09 | 扬州新联汽车零部件有限公司 | Welding locating tool |
| JP2015042407A (en) * | 2013-08-26 | 2015-03-05 | 三菱電機株式会社 | Positioning jig of stud welding |
| CN104400276A (en) * | 2014-09-02 | 2015-03-11 | 中国科学院等离子体物理研究所 | Mechanism for remotely cutting and welding internal pipeline of vacuum chamber of nuclear fusion device |
| CN104690400A (en) * | 2015-02-12 | 2015-06-10 | 中国科学院等离子体物理研究所 | Method for welding all-position narrow gap in Tokamak vacuum chamber |
| CN205008722U (en) * | 2015-07-31 | 2016-02-03 | 平高集团有限公司 | Welding double -screw bolt location frock |
| CN109746633A (en) * | 2017-11-03 | 2019-05-14 | 西安核设备有限公司 | Vacuum chamber supporting welding block assembly manufacturing process |
| CN110732823A (en) * | 2019-11-20 | 2020-01-31 | 芜湖普威技研有限公司 | stud welding rapid positioning welding tool |
| CN111710442A (en) * | 2020-06-23 | 2020-09-25 | 核工业西南物理研究院 | Ultrahigh vacuum sealing flange structure for non-circular channel of large tokamak vacuum chamber |
| CN113828964A (en) * | 2020-06-23 | 2021-12-24 | 西安核设备有限公司 | Deformation prevention process and device for welding square window on double-layer thin-wall D-shaped cross section |
-
2022
- 2022-08-31 CN CN202211055460.5A patent/CN115488476B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7302249D0 (en) * | 1972-03-30 | 1974-08-15 | Union Carbide Corp | ELECTRONIC GAS CAUSED WITH NUCLEUS, FOR ARC WELDING WITH PROT |
| JPH02298890A (en) * | 1989-05-15 | 1990-12-11 | Japan Atom Energy Res Inst | Assembling method for vacuum chamber and nuclear fusion device |
| KR20080063910A (en) * | 2007-01-03 | 2008-07-08 | 한국기초과학지원연구원 | Assembly structure of superconduction tokamak vacuum vessel |
| JP2015042407A (en) * | 2013-08-26 | 2015-03-05 | 三菱電機株式会社 | Positioning jig of stud welding |
| CN203526825U (en) * | 2013-09-26 | 2014-04-09 | 扬州新联汽车零部件有限公司 | Welding locating tool |
| CN104400276A (en) * | 2014-09-02 | 2015-03-11 | 中国科学院等离子体物理研究所 | Mechanism for remotely cutting and welding internal pipeline of vacuum chamber of nuclear fusion device |
| CN104690400A (en) * | 2015-02-12 | 2015-06-10 | 中国科学院等离子体物理研究所 | Method for welding all-position narrow gap in Tokamak vacuum chamber |
| CN205008722U (en) * | 2015-07-31 | 2016-02-03 | 平高集团有限公司 | Welding double -screw bolt location frock |
| CN109746633A (en) * | 2017-11-03 | 2019-05-14 | 西安核设备有限公司 | Vacuum chamber supporting welding block assembly manufacturing process |
| CN110732823A (en) * | 2019-11-20 | 2020-01-31 | 芜湖普威技研有限公司 | stud welding rapid positioning welding tool |
| CN111710442A (en) * | 2020-06-23 | 2020-09-25 | 核工业西南物理研究院 | Ultrahigh vacuum sealing flange structure for non-circular channel of large tokamak vacuum chamber |
| CN113828964A (en) * | 2020-06-23 | 2021-12-24 | 西安核设备有限公司 | Deformation prevention process and device for welding square window on double-layer thin-wall D-shaped cross section |
Non-Patent Citations (2)
| Title |
|---|
| 双室真空包装机真空室拉弧式螺柱焊接工艺;王艳虎;陈希章;蒋琪;;焊接技术(第05期);全文 * |
| 螺柱焊枪夹持结构稳定性提升;张昕;刁统武;赵展;;汽车工艺师(第09期);全文 * |
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