CN117359059A - Combustion chamber flame tube pre-evaporation tube mounting clamp and application method thereof - Google Patents
Combustion chamber flame tube pre-evaporation tube mounting clamp and application method thereof Download PDFInfo
- Publication number
- CN117359059A CN117359059A CN202311657095.XA CN202311657095A CN117359059A CN 117359059 A CN117359059 A CN 117359059A CN 202311657095 A CN202311657095 A CN 202311657095A CN 117359059 A CN117359059 A CN 117359059A
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- tube
- evaporation
- clamping
- flame tube
- central shaft
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- 238000001704 evaporation Methods 0.000 title claims abstract description 141
- 230000008020 evaporation Effects 0.000 title claims abstract description 139
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 title abstract description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 78
- 238000003466 welding Methods 0.000 claims abstract description 70
- 229910052786 argon Inorganic materials 0.000 claims abstract description 39
- 238000009423 ventilation Methods 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims description 41
- 238000007906 compression Methods 0.000 claims description 41
- 238000007789 sealing Methods 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims 4
- 210000004907 gland Anatomy 0.000 claims 2
- 230000009471 action Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
-
- 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
-
- 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
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- 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
- B23K2101/04—Tubular or hollow articles
-
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Spray-Type Burners (AREA)
Abstract
The invention relates to the technical field of mounting fixtures, in particular to a combustion chamber flame tube pre-evaporation tube mounting fixture and a use method thereof, comprising a support frame, an upper positioning frame and a lower positioning frame, wherein the support frame is provided with a support part for supporting an arc bottom wall of a flame tube at a preset height away from a processing platform; the upper positioning frame is positioned above the supporting part and provided with a plurality of clamping arms, and the tail ends of the clamping arms are provided with clamping structures; the lower locating frame comprises a plurality of ejector pins and a communication structure, wherein the ejector pins and the communication structure are located below the supporting part and correspond to the clamping arm positions one by one, the ventilation cavities of the ejector pins are connected with an argon bottle through the communication structure, the ejector pins are further provided with needle tips, the ventilation cavities form openings at the end faces of the needle tips, and the outer parts of the needle tips are provided with inner supporting structures. The invention can improve the stability of the pre-evaporation pipe during welding, and can introduce argon into the inner side of the welding line in the welding process, thereby improving the welding quality of the pre-evaporation pipe and solving the problem that the welding quality of the pre-evaporation pipe is not high enough in the prior art.
Description
Technical Field
The invention relates to the technical field of mounting fixtures, in particular to a combustion chamber flame tube pre-evaporation tube mounting fixture and a using method thereof.
Background
The pre-evaporation tube is one of the key components of the combustion chamber, and the design of the pre-evaporation tube is related to the quality of the fuel atomization effect and the performance of the combustion chamber, so that the optimal design of the pre-evaporation tube, especially the welding quality of the pre-evaporation tube, has important influence on the performance and safety of the combustion chamber and even the whole engine.
The invention discloses a combustion chamber flame tube pre-evaporation tube mounting fixture, which is a tool specially used for helping to mount and position a pre-evaporation tube playing a key role in a combustion chamber, in particular to a combustion chamber of an engine according to an invention design (a combustion chamber flame tube pre-evaporation tube mounting fixture and a use method thereof) disclosed in publication No. CN109128630A, wherein the combustion chamber is an annular backflow combustion chamber with the pre-evaporation tube, and a mounting fixture for positioning and welding the pre-evaporation tube is also provided, and the mounting fixture can effectively position the position of the pre-evaporation tube in an annular cavity of the flame tube when the pre-evaporation tube is welded to an arc-shaped bottom wall of the flame tube so as to facilitate welding between the pre-evaporation tube and the flame tube and improve welding quality between the pre-evaporation tube and the flame tube.
However, although the above-mentioned installation jig can improve the welding quality of the pre-evaporation tube to some extent, positioning during welding of the pre-evaporation tube is only one of factors influencing the welding quality, for example, argon arc welding, and the solubility of argon gas around the weld joint is also one of factors influencing the welding quality, when the above-mentioned installation jig is used for welding the pre-evaporation tube, the argon gas concentration on the outer side of the weld joint (on the side outside the annular cavity) can generally meet the welding requirement, and the welding quality on the inner side of the weld joint (on the side inside the annular cavity) can be reduced due to lack of argon gas, so it is a commonly pursued goal of those skilled in the art to design a combustor basket pre-evaporation tube installation jig capable of further improving the welding quality of the pre-evaporation tube.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the installation clamp for the pre-evaporation tube of the combustor flame tube and the use method thereof, which can improve the stability of the pre-evaporation tube during welding, and can introduce argon into the inner side of a welding line during welding so as to improve the welding quality of the pre-evaporation tube, thereby solving the problem that the welding quality of the pre-evaporation tube is not high enough in the prior art.
To achieve the above object, in a first aspect, the present invention provides a burner tube pre-evaporation tube mounting fixture, comprising:
the support frame is provided with a support part for supporting the arc bottom wall of the flame tube away from the processing platform by a preset height;
the upper positioning frame is positioned above the supporting part and provided with a plurality of clamping arms which are suitable for extending into the annular cavity of the flame tube arranged on the supporting part, and the tail end of each clamping arm is provided with a clamping structure for clamping the pre-evaporation tube;
and the lower locating rack comprises a plurality of ejector pins and communication structures, wherein the ejector pins and the communication structures are positioned below the supporting parts and correspond to the clamping arm positions one by one, each ejector pin is provided with a ventilation cavity, the ventilation cavities are connected with an argon bottle through the communication structures, the ejector pins are further provided with needle point parts, which are suitable for being inserted into inlet pipes of the pre-evaporation pipes, the ventilation cavities form openings at the end surfaces of the needle point parts, and the outer parts of the needle point parts are provided with inner supporting structures which can support and block the inner parts of the inlet pipes when the needle point parts are inserted into the inlet pipes.
Optionally, the inner support structure comprises:
the plurality of press rings comprise a fixed press ring and a plurality of movable press rings, and the fixed press rings are fixedly arranged on the periphery of the tip part of the needle; the movable compression rings are sleeved outside the needle point part and can slide along the axial direction of the needle point part;
the elastic sealing rings are sleeved on the needle tip and are respectively positioned between the adjacent pressing rings, and one side of each of the fixed pressing ring and the movable pressing ring, which faces the sealing ring, is provided with a conical surface;
and the compression nut is provided with external threads outside the needle tip and comprises a rod part and a head part, the rod part is in threaded connection with the external threads, the diameter of the rod part is smaller than the inner diameter of the inlet pipe, the movable compression rings are positioned between the fixed compression rings and the rod part, and the diameter of the head part is larger than the diameter of the rod part and is fixedly arranged at one end of the rod part far away from the movable compression rings.
Optionally, the communication structure comprises a central cylinder, a plurality of hollow support arms, a plurality of ball valves and an air tap, and the central cylinder is fixed with the support frame; the support arms are fixedly arranged around the central cylinder, the ejector pins are vertically fixed at the free ends of the support arms, the ventilation cavity of each ejector pin is communicated with the central cylinder through the support arm, and each ejector pin is provided with a ball valve; the air tap is arranged on the central cylinder.
Optionally, the support frame further includes a chassis and a central shaft vertically fixed in the center of the chassis, the support portion includes a bracket, the bracket includes a conical supporting plate sleeved outside the central shaft and a plurality of connecting ribs fixedly connected between the inner side of the supporting plate and the central shaft, and the diameter of the annular inner side wall of the flame tube is greater than the diameter of the top of the supporting plate and less than the diameter of the bottom of the supporting plate.
Optionally, the support part further comprises an inner support frame, and the inner support frame comprises:
the first sleeve is positioned above the connecting rib and is sleeved outside the central shaft in a sliding way along the axial direction of the central shaft;
a first positioning mechanism for selectively locking the first sleeve to the central shaft to allow or restrict the first sleeve to slide along the central shaft;
a plurality of support plates arranged around the central shaft;
the connecting rods comprise a plurality of upper connecting rods and a plurality of lower connecting rods, each supporting plate is hinged with the first sleeve through one upper connecting rod, and each supporting plate is hinged with the connecting rib through one lower connecting rod.
Optionally, the upper positioning frame further includes:
the second sleeve is sleeved outside the central shaft in a sliding way along the axial direction of the central shaft;
a second positioning mechanism for selectively locking the second sleeve to the central shaft to allow or restrict the second sleeve to slide along the central shaft;
the connecting cylinders are fixedly arranged around the second sleeve, the connecting cylinders are provided with sliding grooves, the clamping arms are L-shaped, the first ends of the clamping arms are connected in the sliding grooves in a sliding mode, and the clamping structures are arranged at the second ends of the clamping arms;
the adjusting part comprises an adjusting knob which is in threaded connection with the second sleeve and a connecting part which is in rotary connection with the adjusting knob through a bearing;
and one end of each push-pull rod is hinged with the corresponding clamping arm, and the other end of each push-pull rod is hinged with the corresponding connecting part.
Optionally, the central shaft is a polygonal prism structure, and the inner hole of the second sleeve is a polygonal hole matched with the shape of the central shaft.
Optionally, the clamping structure includes:
the clamping frame comprises a main body part which is shaped like a Chinese character 'ji' and is fixed with the end parts of the clamping arms, and two L-shaped supporting end parts which are arranged at the two ends of the main body part oppositely, wherein the two supporting end parts are respectively provided with a positioning through hole which is matched with the outlet pipe of the pre-evaporation pipe in size in a penetrating way;
and the elastic abutting part is elastically arranged on the inner side of the main body part and is suitable for applying elastic pre-tightening force axially downwards along the positioning through hole to the communicating pipe of the pre-evaporation pipe arranged on the inner side of the main body part.
Optionally, the arm lock is hollow structure, elasticity supports tight portion and is including supporting tight piece, inserted bar, plectrum and reset spring, support tight piece setting and be in the inboard of main part, just support tight piece bottom be provided with the spacing notch of the communicating pipe appearance adaptation of evaporating pipe in advance, inserted bar fixed connection is in support the top of tight piece, the activity of inserted bar top runs through extremely the inside of arm lock, the plectrum with the inserted bar top is fixed, offer on the outer wall of arm lock and supply the gliding slide hole of plectrum, reset spring cover is located the inserted bar is outside, reset spring's both ends respectively with main part with support tight piece and offset.
In a second aspect, the present invention provides a method for using a burner flame tube pre-evaporation tube mounting fixture, using the burner flame tube pre-evaporation tube mounting fixture, comprising the steps of:
placing a flame tube to be welded with a pre-evaporation tube on a supporting part of a supporting frame, so that the arc bottom wall of the flame tube is supported away from a processing platform;
step two, clamping the pre-evaporation tube by a clamping structure of the upper positioning frame and extending the pre-evaporation tube into the annular cavity of the flame tube, so that an inlet tube of the pre-evaporation tube is accurately arranged at the welding hole position of the flame tube;
step three, inserting the needle tip of the thimble into an inlet pipe of the pre-evaporation pipe after penetrating through the welding hole, and fixing the position of the pre-evaporation pipe again by utilizing an inner supporting structure of the needle tip;
welding an inlet pipe of the pre-evaporation pipe to the welding hole of the flame tube outside the flame tube;
and fifthly, when the inlet pipe of the pre-evaporation pipe is welded to the welding hole of the flame tube outside the flame tube, argon can be introduced into the ventilation cavity of the thimble by utilizing the argon bottle and the communication structure, the argon in the ventilation cavity enters the pre-evaporation pipe through the opening of the needle tip, and finally, the argon is introduced into the flame tube at a position close to the welding line by the two outlet pipes of the pre-evaporation pipe.
Compared with the prior art, the invention provides the combustion chamber flame tube pre-evaporation tube mounting clamp and the use method thereof, and the combustion chamber flame tube pre-evaporation tube mounting clamp has the following beneficial effects:
according to the invention, the ejector pin and the inner supporting structure are arranged, so that when the inlet pipe of the pre-evaporation pipe is welded to the welding hole of the flame tube outside the flame tube, on one hand, the inner supporting structure at the tip of the pin is used for fixing the position of the pre-evaporation pipe to help improve the welding quality of the pre-evaporation pipe, and on the other hand, argon is introduced into the flame tube at the position close to the welding seam through the tip of the ejector pin, so that the solubility of the argon at the inner side and the outer side of the welding seam meets the requirement of argon arc welding, and the welding quality of the pre-evaporation pipe is further improved;
according to the invention, the support part comprising the inner support frame and the bracket is arranged, the support plate of the bracket can be used for stably supporting the junction position of the arc bottom wall and the annular inner side wall of the flame tube, so that the arc bottom wall of the flame tube is supported away from the processing platform by a preset height and the welding holes at the bottom of the arc bottom wall are exposed, the follow-up welding work is convenient, a plurality of support plates of the inner support frame are abutted against the annular inner side wall of the flame tube, the flame tube can be further positioned on the support frame, and the flame tube and the support frame have higher coaxiality after being fixed, so that the welding quality of the pre-evaporation tube is further optimized;
according to the invention, the position of the pre-evaporation tube in the annular cavity of the flame tube can be adjusted by screwing the adjusting knob of the adjusting part through arranging the upper locating frame comprising the second sleeve, the second locating mechanism, the connecting tubes, the adjusting part and the push-pull rods, so that the pre-evaporation tube can be located at a preset position in the annular cavity of the flame tube.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the usage status structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 4 is a schematic view of a supporting frame structure according to the present invention;
FIG. 5 is a schematic view of the structure of the upper positioning frame of the present invention;
FIG. 6 is a schematic view of a lower spacer structure according to the present invention;
FIG. 7 is a schematic view of a connection structure between a clamping arm and a clamping structure according to the present invention;
FIG. 8 is a schematic view of the elastic supporting portion of the present invention;
FIG. 9 is a schematic view of the structure of the thimble and the inner support structure of the present invention.
In the figure: 1. a support frame; 10. a bracket; 100. a supporting plate; 101. a connecting rib; 11. a chassis; 12. a central shaft; 13. an inner bracket; 130. a first sleeve; 131. a first positioning mechanism; 1310. a first positioning pin; 1311. a first positioning hole; 1312. a second positioning hole; 132. a support plate; 133. an upper connecting rod; 134. a lower connecting rod; 135. a first compression spring; 2. an upper positioning frame; 20. a clamp arm; 21. a second sleeve; 22. a second positioning mechanism; 220. a second positioning pin; 221. a third positioning hole; 223. a fourth positioning hole; 23. a connecting cylinder; 24. an adjusting section; 240. an adjustment knob; 241. a bearing; 242. a connection part; 25. a push-pull rod; 26. a clamping structure; 260. a clamping frame; 2600. a main body portion; 2601. a support end; 2602. positioning the through hole; 261. an elastic abutting part; 2610. a tightening block; 2611. a rod; 2612. a pulling piece; 2613. a return spring; 27. a second compression spring; 3. a lower positioning frame; 30. a thimble; 300. a ventilation chamber; 31. a communication structure; 310. a central cylinder; 311. a support arm; 312. a ball valve; 313. an air tap; 32. an inner support structure; 320. fixing the compression ring; 321. a movable compression ring; 322. a seal ring; 323. a compression nut; 3230. a stem portion; 3231. a head; 4. a flame tube; 40. an annular outer sidewall; 41. an annular inner sidewall; 42. an arcuate bottom wall; 43. an annular cavity; 44. welding holes; 5. a pre-evaporation tube; 50. a communicating pipe; 51. an inlet pipe; 52. an outlet tube.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: referring to fig. 1 to 9, in a first aspect, according to an embodiment of the present invention, a technical solution is provided: the utility model provides a combustor flame tube pre-evaporation tube mounting fixture, includes support frame 1, upper locating rack 2 and lower locating rack 3, and wherein, support frame 1 has the supporting part that supports arc diapire 42 of flame tube 4 from the processing platform predetermined height; the upper positioning frame 2 is positioned above the supporting part and is provided with a plurality of clamping arms 20 which are suitable for extending into the annular cavity 43 of the flame tube 4 arranged on the supporting part, and the tail end of each clamping arm 20 is provided with a clamping structure 26 for clamping the pre-evaporation tube 5; the lower locating frame 3 comprises a plurality of ejector pins 30 and a communication structure 31, wherein the ejector pins 30 and the communication structure 31 are positioned below the supporting parts and are in one-to-one correspondence with the positions of the plurality of clamping arms 20, each ejector pin 30 is provided with a ventilation cavity 300, the ventilation cavities 300 are connected with an argon bottle through the communication structure 31, the ejector pins 30 are further provided with needle tips which are suitable for being inserted into the inlet pipes 51 of the pre-evaporation pipes 5, the ventilation cavities 300 form openings at the end surfaces of the needle tips, and the outer parts of the needle tips are provided with inner supporting structures 32 which can support and seal the interiors of the inlet pipes 51 when the needle tips are inserted into the inlet pipes 51.
When the scheme is implemented, the flame tube 4 to be welded with the pre-evaporation tube 5 is placed on the supporting part of the supporting frame 1, at this time, the arc bottom wall 42 of the flame tube 4 is supported away from the processing platform so as to facilitate the later welding work, then, the pre-evaporation tube 5 is clamped by the clamping structure 26 of the upper positioning frame 2 and then stretches into the annular cavity 43 of the flame tube 4, the inlet tube 51 of the pre-evaporation tube 5 is accurately placed at the position of the welding hole 44 of the flame tube 4, then, the needle tip part of the thimble 30 passes through the welding hole 44 and then is inserted into the inlet tube 51 of the pre-evaporation tube 5, and the position of the pre-evaporation tube 5 is fixed again by the inner supporting structure 32 of the needle tip part, so that the welding quality of the pre-evaporation tube 5 is improved.
In the present exemplary embodiment, the inner support structure 32 includes a plurality of compression rings, a plurality of elastic sealing rings 322, and compression nuts 323, wherein the plurality of compression rings include a fixed compression ring 320 and a plurality of movable compression rings 321, and the fixed compression ring 320 is fixedly disposed at the periphery of the tip portion; the movable compression rings 321 are sleeved outside the needle tip and can slide along the axial direction of the needle tip; a plurality of elastic sealing rings 322 are sleeved on the needle tip and are respectively positioned between the adjacent pressing rings, and one side of the fixed pressing ring 320 and one side of the movable pressing ring 321, which face the sealing rings 322, are provided with conical surfaces; the outside of the needle tip is provided with external threads, the compression nut 323 comprises a rod portion 3230 and a head portion 3231, the rod portion 3230 is in threaded connection with the external threads, the diameter of the rod portion 3230 is smaller than the inner diameter of the inlet pipe 51, a plurality of movable compression rings 321 are positioned between the fixed compression rings 320 and the rod portion 3230, the diameter of the head portion 3231 is larger than that of the rod portion 3230, and the head portion 3231 is fixedly arranged at one end, far away from the movable compression rings 321, of the rod portion 3230; after the compression rings, the elastic sealing rings 322 and the rod portions 3230 of the compression nuts 323 are inserted into the inlet pipe 51 of the pre-evaporation pipe 5 along with the free end portions of the needle tips of the ejector pins 30, the compression nuts 323 move towards the inlet pipe 51 of the pre-evaporation pipe 5 by screwing the head portions 3231 of the compression nuts 323, the compression rings and the sealing rings 322 are extruded by the rod portions 3230 of the compression nuts 323, the sealing rings 322 are extruded by the fixed compression rings 320 and the movable compression rings 321 through conical surfaces, the diameters of the sealing rings 322 are increased, the outer rings of the sealing rings 322 with the increased diameters abut against the inner wall of the inlet pipe 51 of the pre-evaporation pipe 5, the pre-evaporation pipe 5 is supported by the compression rings and the sealing rings 322, and meanwhile the inlet pipe 51 of the pre-evaporation pipe 5 is sealed by the compression rings and the sealing rings 322, and argon leakage from the positions is prevented. In other embodiments, the inner support structure 32 may also be a balloon wrapped around the exterior of the needle tip, with the purpose of supporting and sealing off the interior of the inlet tube 51 by squeezing the balloon or inflating the balloon.
In the present exemplary embodiment, the communication structure 31 includes a central cylinder 310, a plurality of hollow arms 311, a plurality of ball valves 312, and an air nozzle 313, where the central cylinder 310 is fixed to the support frame 1; the support arms 311 are fixedly arranged around the central cylinder 310, the thimble 30 is vertically fixed at the free end part of the support arms 311, the ventilation cavity 300 of the thimble 30 is communicated with the central cylinder 310 through the support arms 311, and each thimble 30 is provided with a ball valve 312; the air tap 313 is arranged on the central cylinder 310; the air tap 313 is connected with an argon gas bottle through a hose, high-pressure argon gas in the argon gas bottle enters the central cylinder 310 through the air tap 313 and is dispersed into the ventilation cavity 300 of each thimble 30 through a plurality of support arms 311, and when the pre-evaporation tube 5 is welded, the argon gas can be introduced into the inner side of a welding seam (namely, the position of the flame tube 4 corresponding to the welding seam) by only opening the ball valve 312 on the corresponding thimble 30. In other embodiments, the communication structure 31 may be a plurality of pipelines directly connecting the thimble 30 and the argon bottle, and a valve is disposed on each pipeline, so as to achieve the purpose of introducing argon into the ventilation cavity 300 of the thimble 30.
In the present exemplary embodiment, the support 1 further includes a chassis 11 and a central shaft 12 vertically and fixedly disposed at the center of the chassis 11, the support portion includes a bracket 10, the bracket 10 includes a conical supporting plate 100 sleeved outside the central shaft 12 and a plurality of connecting ribs 101 fixedly connected between the inner side of the supporting plate 100 and the central shaft 12, the diameter of the annular inner side wall 41 of the flame tube 4 is larger than the diameter of the top of the supporting plate 100 and smaller than the diameter of the bottom of the supporting plate 100, when the flame tube 4 is placed on the support 1, the flame tube 4 is sleeved from the top of the central shaft 12, so that the boundary position between the arc bottom wall 42 and the annular inner side wall 41 of the flame tube 4 is supported on the outer conical surface of the supporting plate 100, and the arc bottom wall 42 of the flame tube 4 is supported away from the processing platform by a predetermined height and the welding hole 44 at the bottom of the arc bottom wall 42 is exposed, so as to facilitate welding.
In the present exemplary embodiment, the supporting portion further includes an inner supporting frame 13, where the inner supporting frame 13 includes a first sleeve 130, a first positioning mechanism 131, a plurality of supporting plates 132, and a plurality of connecting rods, and the first sleeve 130 is located above the connecting rib 101 and is slidably sleeved outside the central shaft 12 along the axial direction of the central shaft 12; the first positioning mechanism 131 may selectively lock the first sleeve 130 to the central shaft 12 to allow or restrict the first sleeve 130 from sliding along the central shaft 12; a plurality of support plates 132 are arranged around the central shaft 12; the plurality of connecting rods comprise a plurality of upper connecting rods 133 and a plurality of lower connecting rods 134, each supporting plate 132 is hinged with the first sleeve 130 through an upper connecting rod 133, and each supporting plate 132 is hinged with the connecting rib 101 through a lower connecting rod 134; after the flame tube 4 is placed on the bracket 10, the fixation between the first sleeve 130 and the central shaft 12 is released through the first positioning mechanism 131, then the first sleeve 130 moves along the axial direction of the central shaft 12 towards the direction close to the bracket 10, and under the action of the connecting rod, the plurality of support plates 132 move along the axial direction of the central shaft 12 and then abut against the annular inner side wall 41 of the flame tube 4, so that the flame tube 4 is further positioned on the support frame 1, the flame tube 4 and the support frame 1 have higher coaxiality after being fixed, and the welding quality of the pre-evaporation tube 5 is further optimized; in some embodiments, the first positioning mechanism 131 may include a first positioning pin 1310, a first positioning hole 1311 disposed on the first sleeve 130, and a second positioning hole 1312 disposed on the central shaft 12, when the first positioning hole 1311 and the second positioning hole 1312 are overlapped, the first sleeve 130 may be locked on the central shaft 12 by inserting the first positioning pin 1310 into the first positioning hole 1311 and the second positioning hole 1312, and after the first positioning pin 1310 is pulled out from the first positioning hole 1311 and the second positioning hole 1312, the first sleeve 130 may slide along the axial direction of the central shaft 12; in some embodiments, a first compression spring 135 may be disposed between the first sleeve 130 and the connection rib 101 of the bracket 10, and after the first positioning pin 1310 is pulled out from the first positioning hole 1311 and the second positioning hole 1312, the first compression spring 135 may push the first sleeve 130 to move upwards along the axial direction of the central shaft 12, so that the plurality of support plates 132 automatically move towards the direction approaching the central shaft 12 and maintain the folded state.
In the present exemplary embodiment, the upper positioning frame 2 further includes a second sleeve 21, a second positioning mechanism 22, a plurality of connection cylinders 23, an adjusting portion 24, and a plurality of push-pull rods 25, where the second sleeve 21 is slidably sleeved outside the central shaft 12 along the axial direction of the central shaft 12; the second positioning mechanism 22 can selectively lock the second sleeve 21 on the central shaft 12 to allow or restrict the second sleeve 21 to slide along the central shaft 12; the connecting cylinders 23 are fixedly arranged around the second sleeve 21, the connecting cylinders 23 are provided with sliding grooves, the clamping arms 20 are L-shaped, the first ends of the clamping arms 20 are slidably connected in the sliding grooves, and the clamping structures 26 are arranged at the second ends of the clamping arms 20; the adjusting part 24 includes an adjusting knob 240 screw-coupled with the second sleeve 21, and a coupling part 242 rotatably coupled with the adjusting knob 240 through a bearing 241; one end of each push-pull rod 25 is hinged with each clamping arm 20, and the other end is hinged with the connecting part 242; after the pre-evaporation tube 5 is clamped and fixed at the second end of the clamping arm 20 through the clamping structure 26, the second sleeve 21 is sleeved on the central shaft 12, the second sleeve 21 is moved downwards to enable the second end of the clamping arm 20 to extend into the annular cavity 43 of the flame tube 4, then the first end of the clamping arm 20 slides in the sliding groove of the connecting tube 23 under the action of the push-pull rod 25 through screwing the adjusting knob 240, so that the position of the pre-evaporation tube 5 in the annular cavity 43 of the flame tube 4 is adjusted, after the position is adjusted, the second sleeve 21 is locked at the fixed height of the central shaft 12 through the second positioning mechanism 22, and at the moment, the pre-evaporation tube 5 is positioned at a preset position in the annular cavity 43 of the flame tube 4. In some embodiments, the second positioning mechanism 22 may include a second positioning pin 220, a third positioning hole 221 disposed on the second sleeve 21, and a fourth positioning hole 223 disposed on the central shaft 12, when the third positioning hole 221 and the fourth positioning hole 223 are overlapped, the second sleeve 21 may be locked on the central shaft 12 by inserting the second positioning pin 220 into the third positioning hole 221 and the fourth positioning hole 223, and after the second positioning pin 220 is pulled out from the third positioning hole 221 and the fourth positioning hole 223, the second sleeve 21 may slide along the axial direction of the central shaft 12; in some embodiments, a second compression spring 27 may be disposed between the bottom of the second sleeve 21 and the first sleeve 130, when the position of the pre-evaporation tube 5 in the annular cavity 43 of the flame tube 4 is adjusted by screwing the adjusting knob 240, the whole upper positioning frame 2 may be supported at a certain height by using the second compression spring 27, so that the pre-evaporation tube 5 is prevented from contacting the arc bottom wall 42 of the flame tube 4 during the adjustment of the position of the pre-evaporation tube 5, so that the adjustment is performed, and after the adjustment is completed, the welding hole 44 of the flame tube 4 and the inlet tube 51 of the pre-evaporation tube 5 may be pre-aligned by pressing the second sleeve 21.
In the present exemplary embodiment, the central shaft 12 is in a polygonal prism structure, and the inner hole of the second sleeve 21 is a polygonal hole adapted to the outer shape of the central shaft 12; in this way, when the second sleeve 21 is sleeved on the central shaft 12, the second sleeve 21 and the central shaft 12 do not rotate relatively, so that the clamp arm 20 does not rotate around the central shaft 12, and the stability of the position of the pre-evaporation tube 5 on the clamp arm 20 is ensured.
In the present exemplary embodiment, the clamping structure 26 includes a clamping frame 260 and an elastic abutting portion 261, wherein the clamping frame 260 includes a main body portion 2600 having a shape of a Chinese character 'ji' and fixed to the end of the clamping arm 20, and two opposite L-shaped support end portions 2601 disposed at both ends of the main body portion 2600, and positioning through holes 2602 adapted to the size of the outlet pipe 52 of the pre-evaporation pipe 5 are provided through both support end portions 2601; the elastic abutting portion 261 is elastically provided inside the main body portion 2600 and adapted to apply an elastic pre-tightening force axially downward along the positioning through hole 2602 to the communication pipe 50 of the pre-evaporation pipe 5 placed inside the main body portion 2600; the pre-evaporation tube 5 is placed inside the main body portion 2600 such that the two outlet tubes 52 of the pre-evaporation tube 5 are aligned and inserted into the positioning through holes 2602 of the two support ends 2601 of the clip frame 260, and then the communicating tube 50 of the pre-evaporation tube 5 is abutted against the elastic abutment 261, thereby fixing the pre-evaporation tube 5 inside the clip frame 260. If necessary, the clamping structure 26 may also adopt a square shaft, a positioning bracket 10, a jackscrew and other structures in a combustion chamber flame tube pre-evaporation tube mounting fixture as disclosed in the patent publication No. CN 109128630A.
In the present exemplary embodiment, the clamping arm 20 is of a hollow structure, the elastic abutting portion 261 includes an abutting block 2610, a plug rod 2611, a pulling piece 2612 and a return spring 2613, the abutting block 2610 is disposed at the inner side of the main body portion 2600, a limit notch adapted to the shape of the communicating tube 50 of the pre-evaporation tube 5 is disposed at the bottom of the abutting block 2610, the plug rod 2611 is fixedly connected to the top of the abutting block 2610, the top of the plug rod 2611 movably penetrates into the inside of the clamping arm 20, the pulling piece 2612 is fixed to the top of the plug rod 2611, a sliding hole for sliding the pulling piece 2612 is formed in the outer wall of the clamping arm 20, the return spring 2613 is sleeved outside the plug rod 2611, and two ends of the return spring 2613 are respectively abutted against the main body portion 2600 and the abutting block 2610; before fixing the pre-evaporation tube 5, the pulling piece 2612 is pulled to move the abutting block 2610 towards the side close to the clamping arm 20, the return spring 2613 is compressed, after the pre-evaporation tube 5 is placed at a proper position inside the clamping frame 260, the pulling piece 2612 is loosened, the abutting block 2610 abuts against the middle position of the communicating tube 50 of the pre-evaporation tube 5 under the resilience force of the return spring 2613, at this time, the pre-evaporation tube 5 is fixed inside the clamping frame 260, and in other embodiments, the elastic abutting portion 261 may only have the return spring 2613.
In a second aspect, the present invention provides a method for using a burner flame tube pre-evaporation tube mounting fixture, using the burner flame tube pre-evaporation tube mounting fixture, comprising the steps of:
firstly, placing a flame tube 4 to be welded with a pre-evaporation tube 5 on a supporting part of a supporting frame 1, so that an arc bottom wall 42 of the flame tube 4 is supported away from a processing platform;
step two, clamping the pre-evaporation tube 5 by the clamping structure 26 of the upper positioning frame 2 and then extending the pre-evaporation tube 5 into the annular cavity 43 of the flame tube 4, so that the inlet tube 51 of the pre-evaporation tube 5 is accurately positioned at the position of the welding hole 44 of the flame tube 4;
step three, the needle tip of the thimble 30 is inserted into the inlet pipe 51 of the pre-evaporation pipe 5 after passing through the welding hole 44, and the position of the pre-evaporation pipe 5 is fixed again by the inner supporting structure 32 of the needle tip;
welding an inlet pipe 51 of the pre-evaporation pipe 5 to the welding hole 44 of the flame tube 4 at the outer part of the flame tube 4;
step five, when the inlet pipe 51 of the pre-evaporation pipe 5 is welded to the welding hole 44 of the flame tube 4 outside the flame tube 4, argon gas can be introduced into the ventilation cavity 300 of the thimble 30 by using the argon gas bottle and the communication structure 31, the argon gas in the ventilation cavity 300 enters the pre-evaporation pipe 5 through the opening of the needle tip, and finally the argon gas is introduced into the flame tube 4 from the two outlet pipes 52 of the pre-evaporation pipe 5 to the position close to the welding seam.
Working principle: after the burner flame tube pre-evaporation tube mounting fixture is placed on a processing platform, the flame tube 4 to be welded with the pre-evaporation tube 5 is sleeved from the top end of the central shaft 12, the junction position of the arc bottom wall 42 and the annular inner side wall 41 of the flame tube 4 is supported on the outer conical surface of the supporting plate 100, thereby the arc bottom wall 42 of the flame tube 4 is supported at a preset height away from the processing platform and the welding hole 44 at the bottom of the arc bottom wall 42 is exposed, the preliminary positioning of the flame tube 4 on the supporting frame 1 is completed, after the flame tube 4 is placed on the bracket 10, the first sleeve 130 is moved along the axial direction of the central shaft 12 and towards the direction approaching to the bracket 10, under the action of the connecting rod, the plurality of supporting plates 132 are abutted against the annular inner side wall 41 of the flame tube 4 after being moved along the axial direction of the central shaft 12, at the moment, the first positioning holes 1311 on the first sleeve 130 are overlapped with the second positioning holes 1312 on the central shaft 12, the first positioning pin 1310 is inserted into the first positioning hole 1311 and the second positioning hole 1312, the first sleeve 130 is locked on the central shaft 12, the secondary positioning of the flame tube 4 on the support frame 1 is completed, then, the pre-evaporation tube 5 to be welded is ready to be fixed on the clamping structure 26 of the clamping arm 20, before the pre-evaporation tube 5 is fixed, the pulling piece 2612 is pulled first, the abutting piece 2610 is moved towards one side close to the clamping arm 20, the return spring 2613 is compressed, after the pre-evaporation tube 5 is placed at a proper position inside the clamping frame 260 of the clamping structure 26, the pulling piece 2612 is released, the abutting piece 2610 abuts against the middle position of the communicating tube 50 of the pre-evaporation tube 5 under the resilience force of the return spring 2613, at this time, the pre-evaporation tube 5 is fixed inside the clamping frame 260, after all the pre-evaporation tubes 5 are fixed on the second end of the clamping arm 20 by the clamping structure 26 of the upper positioning frame 2, the second sleeve 21 of the upper positioning frame 2 is sleeved on the central shaft 12 and moves downwards, the second end of the clamping arm 20 stretches into the annular cavity 43 surrounded by the annular inner side wall 41, the annular outer side wall 40 and the arc bottom wall 42, then the first end of the clamping arm 20 slides in the sliding groove of the connecting cylinder 23 under the action of the push-pull rod 25 by screwing the adjusting knob 240, so that the position of the pre-evaporation tube 5 in the annular cavity 43 of the flame tube 4 is adjusted, after the position adjustment, the position of the second sleeve 21 on the central shaft 12 is moved, the third positioning hole 221 and the fourth positioning hole 223 are overlapped, the second positioning pin 220 is inserted into the third positioning hole 221 and the fourth positioning hole 223, so that the second sleeve 21 is locked on the central shaft 12, at the moment, the pre-evaporation tube 5 is positioned at a preset position in the annular cavity 43 of the flame tube 4, the inlet pipe 51 of the pre-evaporation pipe 5 is accurately arranged at the position of the welding hole 44 of the flame tube 4, then the needle tip part of the thimble 30 is inserted into the inlet pipe 51 of the pre-evaporation pipe 5 after passing through the welding hole 44, a plurality of pressing rings, a plurality of elastic sealing rings 322 and the rod part 3230 of the compression nut 323 are inserted into the inlet pipe 51 of the pre-evaporation pipe 5 along with the free end part of the needle tip part of the thimble 30, the compression nut 323 moves towards the inlet pipe 51 of the pre-evaporation pipe 5 by screwing the head part 3231 of the compression nut 323, the pressing rings and the sealing rings 322 are pressed by the rod part 3230 of the compression nut 323, the diameter of the sealing rings 322 is increased by the fixed pressing ring 320 and the movable pressing ring 321 through conical surfaces, the outer ring of the sealing rings 322 with the increased diameter is propped against the inner wall of the inlet pipe 51 of the pre-evaporation pipe 5, the purpose of supporting the inner wall of the pre-evaporation pipe 5 is achieved, meanwhile, the pressing rings and the sealing rings 322 seal the inlet pipe 51 of the pre-evaporation pipe 5, then, the air tap 313 on the central cylinder 310 is connected with an argon gas bottle through a hose, high-pressure argon gas in the argon gas bottle enters the central cylinder 310 through the air tap 313 and is dispersed into the ventilation cavity 300 of each thimble 30 through a plurality of support arms 311, finally, the inlet pipe 51 of the pre-evaporation pipe 5 is welded to the welding hole 44 of the flame tube 4 at the outer part of the flame tube 4, only the ball valve 312 on the corresponding thimble 30 is required to be opened, argon gas in the argon gas bottle is discharged into the ventilation cavity 300 of the thimble 30 after passing through the central cylinder 310 and the support arms 311, argon gas in the ventilation cavity 300 enters the pre-evaporation pipe 5 through the opening of the needle tip, and finally, the two outlet pipes 52 of the pre-evaporation pipe 5 are introduced into the position close to the welding line in the flame tube 4, the argon solubility of the inner side and the outer side of the welding seam can meet the requirement of argon arc welding, the welding quality of the pre-evaporation tube 5 is guaranteed, after welding is finished, the second locating pin 220 is pulled out of the third locating hole 221 and the fourth locating hole 223, the upper locating frame 2 is taken out of the upper end of the central shaft 12, the first locating pin 1310 is pulled out of the first locating hole 1311 and the second locating hole 1312, the first sleeve 130 moves upwards along the axial direction of the central shaft 12 under the action of the resilience force of the first compression spring 135, the plurality of support plates 132 automatically move towards the direction close to the central shaft 12 and keep a folded state, and at the moment, the flame tube 4 is released and the flame tube 4 is removed from the top of the support frame 1.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A combustor basket pre-evaporator tube mounting fixture, comprising:
the support frame (1) is provided with a support part for supporting the arc bottom wall (42) of the flame tube (4) away from the processing platform by a preset height;
the upper locating frame (2) is positioned above the supporting part and is provided with a plurality of clamping arms (20) which are suitable for extending into an annular cavity (43) of the flame tube (4) arranged on the supporting part, and the tail end of each clamping arm (20) is provided with a clamping structure (26) for clamping the pre-evaporation tube (5);
and lower locating rack (3), it includes be located below the supporting part and with a plurality of arm lock (20) position a plurality of thimble (30) and communication structure (31) of one-to-one, each thimble (30) all have a ventilation chamber (300), ventilation chamber (300) are passed through communication structure (31) are connected with the argon gas bottle, thimble (30) still have the needle point portion that is suitable for the import pipe (51) of inserting evaporating pipe (5) in advance, ventilation chamber (300) are in needle point portion terminal surface forms the opening, needle point portion outside is equipped with can support and shutoff when it inserts import pipe (51) inside inner support structure (32) of import pipe (51).
2. The combustor basket pre-evaporator mounting fixture of claim 1, wherein: the inner support structure (32) comprises:
the clamping rings comprise a fixed clamping ring (320) and a plurality of movable clamping rings (321), and the fixed clamping ring (320) is fixedly arranged on the periphery of the end part of the needle point part; the movable compression rings (321) are sleeved outside the needle point part and can slide along the axial direction of the needle point part;
a plurality of elastic sealing rings (322) sleeved on the needle tip and respectively positioned between the adjacent pressing rings, wherein one side of the fixed pressing ring (320) and one side of the movable pressing ring (321) facing the sealing rings (322) are provided with conical surfaces;
and gland nut (323), needle point portion outside is equipped with the external screw thread, gland nut (323) include pole portion (3230) and head (3231), pole portion (3230) with external screw thread threaded connection, just the diameter of pole portion (3230) is less than the internal diameter of import pipe (51), a plurality of movable clamping rings (321) are located fixed clamping ring (320) with between pole portion (3230), head (3231) diameter is greater than pole portion (3230) diameter and fixed set up in pole portion (3230) keep away from the one end of movable clamping ring (321).
3. The combustor basket pre-evaporator mounting fixture of claim 1, wherein: the communication structure (31) comprises a central cylinder (310), a plurality of hollow support arms (311), a plurality of ball valves (312) and an air nozzle (313), and the central cylinder (310) is fixed with the support frame (1); the support arms (311) are fixedly arranged around the central cylinder (310), the ejector pins (30) are vertically fixed at the free ends of the support arms (311), the ventilation cavity (300) of each ejector pin (30) is communicated with the central cylinder (310) through the support arm (311), and each ejector pin (30) is provided with a ball valve (312); the air tap (313) is arranged on the central cylinder (310).
4. The combustor basket pre-evaporator mounting fixture of claim 1, wherein: the support frame (1) still includes chassis (11) and vertical fixed locating center pin (12) at chassis (11) center, supporting part includes a bracket (10), bracket (10) are including the cover locate outside a cone cylindric layer board (100) of center pin (12) and fixed connection in the inboard of layer board (100) with a plurality of connecting ribs (101) between center pin (12), the diameter of the annular inside wall (41) of flame tube (4) is greater than the diameter at layer board (100) top and is less than the diameter at layer board (100) bottom.
5. The combustor basket pre-evaporator mounting fixture of claim 4, wherein: the support part also comprises an inner support (13), and the inner support (13) comprises:
the first sleeve (130) is positioned above the connecting rib (101) and is sleeved outside the central shaft (12) in a sliding way along the axial direction of the central shaft (12);
-a first positioning mechanism (131) for selectively locking said first sleeve (130) to said central shaft (12) to allow or restrict sliding of said first sleeve (130) along said central shaft (12);
a plurality of support plates (132) arranged around the central shaft (12);
the connecting rods comprise a plurality of upper connecting rods (133) and a plurality of lower connecting rods (134), each supporting plate (132) is hinged with the first sleeve (130) through one upper connecting rod (133), and each supporting plate (132) is hinged with the connecting rib (101) through one lower connecting rod (134).
6. The combustor basket pre-evaporator mounting fixture of claim 4, wherein: the upper locating frame (2) further comprises:
the second sleeve (21) is sleeved outside the central shaft (12) in a sliding way along the axial direction of the central shaft (12);
-a second positioning mechanism (22) for selectively locking said second sleeve (21) to said central shaft (12) to allow or limit the sliding of said second sleeve (21) along said central shaft (12);
the connecting cylinders (23) are fixedly arranged around the second sleeve (21), sliding grooves are formed in the connecting cylinders (23), the clamping arms (20) are L-shaped, the first ends of the clamping arms (20) are connected in the sliding grooves in a sliding mode, and the clamping structures (26) are arranged at the second ends of the clamping arms (20);
an adjustment part (24) comprising an adjustment knob (240) screwed with the second sleeve (21) and a connection part (242) rotatably connected with the adjustment knob (240) through a bearing (241);
and one ends of the push-pull rods (25) are respectively hinged with the clamping arms (20), and the other ends of the push-pull rods are respectively hinged with the connecting parts (242).
7. The combustor basket pre-evaporator mounting fixture of claim 6, wherein: the central shaft (12) is of a polygonal prism structure, and the inner hole of the second sleeve (21) is a polygonal hole matched with the shape of the central shaft (12).
8. A combustor basket pre-evaporator mounting fixture as set forth in any one of claims 1 to 7, wherein: the clamping structure (26) comprises:
the clamping frame (260) comprises a main body part (2600) which is shaped like a Chinese character 'ji' and is fixed with the end parts of the clamping arms (20), and two L-shaped supporting end parts (2601) which are oppositely arranged at the two ends of the main body part (2600), wherein the two supporting end parts (2601) are respectively provided with a positioning through hole (2602) which is matched with the outlet pipe (52) of the pre-evaporation pipe (5) in size in a penetrating way;
and an elastic abutting part (261) which is elastically arranged on the inner side of the main body part (2600) and is suitable for applying an elastic pre-tightening force downwards along the axial direction of the positioning through hole (2602) to the communicating pipe (50) of the pre-evaporation pipe (5) arranged on the inner side of the main body part (2600).
9. The combustor basket pre-evaporator mounting fixture of claim 8, wherein: the clamp arm (20) is of a hollow structure, the elastic abutting portion (261) comprises an abutting block (2610), an inserting rod (2611), a pulling piece (2612) and a reset spring (2613), the abutting block (2610) is arranged on the inner side of the main body portion (2600), a limit notch matched with a communicating pipe (50) of the pre-evaporation tube (5) in shape is formed in the bottom of the abutting block (2610), the inserting rod (2611) is fixedly connected to the top of the abutting block (2610), the top of the inserting rod (2611) movably penetrates into the inside of the clamp arm (20), the pulling piece (2612) is fixed to the top of the inserting rod (2611), a sliding hole for the pulling piece (2612) to slide is formed in the outer wall of the clamp arm (20), and the reset spring (2613) is sleeved outside the inserting rod (2611), and two ends of the reset spring (2613) are respectively abutted to the main body portion (2600) and the abutting block (2610).
10. A method for using the burner tube pre-evaporation tube mounting fixture according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
firstly, placing a flame tube (4) to be welded with a pre-evaporation tube (5) on a supporting part of a supporting frame (1), so that an arc bottom wall (42) of the flame tube (4) is supported away from a processing platform;
step two, the clamping structure (26) of the upper positioning frame (2) clamps the pre-evaporation tube (5) and then stretches into the annular cavity (43) of the flame tube (4), so that the inlet tube (51) of the pre-evaporation tube (5) is accurately arranged at the position of the welding hole (44) of the flame tube (4);
step three, inserting the needle tip of the thimble (30) into an inlet pipe (51) of the pre-evaporation pipe (5) after penetrating through a welding hole (44), and fixing the position of the pre-evaporation pipe (5) again by utilizing an inner supporting structure (32) of the needle tip;
welding an inlet pipe (51) of a pre-evaporation pipe (5) to the position of a welding hole (44) of the flame tube (4) at the outer part of the flame tube (4);
and fifthly, when the inlet pipe (51) of the pre-evaporation pipe (5) is welded to the welding hole (44) of the flame tube (4) outside the flame tube (4), argon can be introduced into the ventilation cavity (300) of the thimble (30) by using an argon bottle and a communication structure (31), the argon in the ventilation cavity (300) enters the pre-evaporation pipe (5) through the opening of the needle tip, and finally, the two outlet pipes (52) of the pre-evaporation pipe (5) are introduced into the flame tube (4) at the position close to the welding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311657095.XA CN117359059B (en) | 2023-12-06 | 2023-12-06 | Combustion chamber flame tube pre-evaporation tube mounting clamp and application method thereof |
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| CN202311657095.XA CN117359059B (en) | 2023-12-06 | 2023-12-06 | Combustion chamber flame tube pre-evaporation tube mounting clamp and application method thereof |
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| CN117359059B CN117359059B (en) | 2024-02-23 |
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| CN217526000U (en) * | 2021-12-20 | 2022-10-04 | 广东卡沃罗氢科技有限公司 | Hydrogen gas nozzle with anti-backfire structure for hydrogen machine and hydrogen absorption device |
| CN114700678A (en) * | 2022-03-16 | 2022-07-05 | 青岛西海岸市政工程有限公司 | Urban pipeline welding device with compactness checking function |
| CN217122998U (en) * | 2022-04-11 | 2022-08-05 | 华能重庆两江燃机发电有限责任公司 | Heavy gas turbine combustion chamber flame tube pre-evaporation tube mounting fixture |
| CN115468187A (en) * | 2022-08-15 | 2022-12-13 | 北京航空航天大学 | Evaporation tube type backflow combustion chamber of micro gas turbine engine |
| CN115889951A (en) * | 2022-11-11 | 2023-04-04 | 中国航发沈阳黎明航空发动机有限责任公司 | Pneumatic expansion process device for automatic welding of cone parts |
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