CN112355527A - Post-welding heat preservation system for main chord tube - Google Patents
Post-welding heat preservation system for main chord tube Download PDFInfo
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- CN112355527A CN112355527A CN202011309741.XA CN202011309741A CN112355527A CN 112355527 A CN112355527 A CN 112355527A CN 202011309741 A CN202011309741 A CN 202011309741A CN 112355527 A CN112355527 A CN 112355527A
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- heat preservation
- main chord
- post
- weld
- heat
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- 238000004321 preservation Methods 0.000 title claims abstract description 90
- 238000003466 welding Methods 0.000 title abstract description 25
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000009413 insulation Methods 0.000 claims description 21
- 238000005485 electric heating Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 108010066114 cabin-2 Proteins 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/84—Controlled slow cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a post-welding heat preservation system for a main chord tube, which comprises a conveying device and a plurality of pairs of heat preservation bins, wherein each pair of heat preservation bins are respectively arranged at two sides of the conveying device, the heat preservation bins at the same side are sequentially butted, when the conveying device conveys the welded main chord tube to one pair of heat preservation bins, annular welding seams at two ends of the main chord tube are positioned in the heat preservation bins at the corresponding sides, and the temperature in each pair of heat preservation bins is sequentially reduced along the conveying direction of the main chord tube. The heat preservation system has the advantages that the welding stress concentration can be reduced, the welding line cracking can be prevented, the integral strength of the main chord pipe can be improved, and the energy conservation and the temperature control are facilitated.
Description
Technical Field
The invention mainly relates to a main chord tube forming technology, in particular to a post-welding heat preservation system for a main chord tube.
Background
The crane is an engineering machine capable of carrying out operations such as material lifting, transportation, loading and unloading, and is widely applied to the fields of buildings, traffic, ports, energy sources, irrigation and water conservancy and the like, particularly, for example, bridge construction, power generation equipment installation, shipbuilding, wind generating set erection and the like.
In recent years, with the development of large-scale engineering projects such as petrochemical engineering, nuclear power and steel, the hoisting requirement on oversized equipment is increasing day by day, which puts higher requirements on the hoisting height and the hoisting capacity of a crane. The arm support is one of the important structural members of the crane, and the performance of the arm support has important influence on the lifting height, the lifting capacity and the like of the crane.
The arm support is formed by splicing main chord pipes, the main chord pipes mainly comprise steel pipes, joints are connected to the end portions of the steel pipes, ear hinges are welded to the joints, splicing of the main chord pipes of different sections is achieved through the ear hinges, due to the fact that the ear hinges and the end portions of the steel pipes are welded in an annular mode, welding stress concentration and welding line cracking are prone to occurring after the joints at the two ends of pipe parts are welded in an annular welding mode, and great influences are caused to the performance of the arm support.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a post-welding heat preservation system for a main chord tube, which can reduce welding stress concentration, prevent welding seams from cracking, improve the overall strength of the main chord tube and facilitate energy conservation and temperature control.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a weld back heat preservation system for main chord tube, includes conveyor and many pairs of heat preservation storehouses, every is every the heat preservation storehouse is all divided and is established in the conveyor both sides, and the heat preservation storehouse with one side docks in proper order, and when conveyor will weld the main chord tube and carry to one of them pair of heat preservation storehouse position, the annular weld at main chord tube both ends is located the heat preservation storehouse of corresponding side, and the temperature in each pair of heat preservation storehouse reduces along the direction of delivery of main chord tube in proper order.
As a further improvement of the above technical solution:
the heat preservation bin comprises a bin body, wherein a heat preservation cavity is formed in the bin body, three openings used for conveying the main chord pipes into the heat preservation cavity are formed in the bin body in the conveying direction of the main chord pipes and in the direction opposite to the main chord pipes, and door curtains capable of being opened and closed are arranged at the openings.
The two door curtains of the bin body in the conveying direction of the main chord pipes are soft curtains, and the door curtains of the bin body in the direction opposite to the main chord pipes are provided with lifting plates.
The storehouse body includes heat preservation and heating chamber, the heating chamber is located between heat preservation and the heat preservation chamber.
The heating chamber encloses a holding chamber except for the opening.
The heat-insulating layer comprises an outer shell, an inner shell and a heat-insulating lining body, wherein the heat-insulating lining body is filled between the outer shell and the inner shell.
The heat preservation lining body is provided with a heating element extending into the heating cavity.
The heat-insulating lining body is provided with a mounting hole, the heating element is an electric heating tube, and the electric heating tube is arranged in the mounting hole and extends into the heating cavity.
The shell is provided with a protective cover for covering the electric heating tube.
The heat preservation device is characterized by further comprising a movable trolley and a rail, wherein the rail is laid on the side portion of the conveying device, the movable trolley is installed on the rail, the movable trolley and the moving direction are perpendicular to the conveying direction of the conveying device, and the heat preservation cabin is installed on the movable trolley.
The conveying device comprises a pair of fixed seats, a chain wheel transmission pair is arranged between the two fixed seats, and a driving motor for driving the chain wheel transmission pair to run is installed on one of the fixed seats.
Compared with the prior art, the invention has the advantages that:
the invention discloses a post-welding heat preservation system for main chord pipes, which comprises a conveying device and a plurality of pairs of heat preservation bins, wherein each pair of heat preservation bins are respectively arranged at two sides of the conveying device, the heat preservation bins at the same side are sequentially butted, when the conveying device conveys the welded main chord pipes to one pair of heat preservation bins, annular welding seams at two ends of the main chord pipes are positioned in the heat preservation bins at the corresponding sides, and the temperature in each pair of heat preservation bins is sequentially reduced along the conveying direction of the main chord pipes. In the structure, the temperature in each pair of heat preservation bins is sequentially reduced along the conveying direction of the main chord pipes, when the heat preservation system operates, the welded main chord pipes are conveyed to the high-temperature heat preservation bin position by the conveying device, the annular welding seams at the two ends of the main chord pipes are ensured to be positioned in the heat preservation bins at the corresponding sides, the heat preservation bin is used for preserving the heat of the annular welding seam positions at the two ends of the main chord pipes for a certain time, and then the main chord pipes are sequentially conveyed to each pair of heat preservation bins with gradually reduced temperature for correspondingly preserving the heat for aging, so that the welding stress concentration can be reduced, the welding seams can be prevented from cracking, and the overall strength; the heat preservation aging mode with the temperature decreasing gradually has the advantages of good heat preservation and energy saving effects, stable temperature uniformity and accurate temperature control.
Drawings
FIG. 1 is a schematic perspective view of a post-weld insulation system for a main chord tube according to the present invention.
FIG. 2 is a schematic structural view of the post-weld heat preservation system for the main chord tube according to the present invention.
Fig. 3 is a schematic perspective view of the post-weld heat preservation system for the main chord tube according to the present invention (the main chord tube is not shown).
FIG. 4 is a schematic main sectional view of the insulation bin of the post-weld insulation system for the main chord tube according to the present invention.
FIG. 5 is a schematic side sectional view of the insulation silo in the post-weld insulation system for the main chord tube according to the present invention.
The reference numerals in the figures denote:
1. a conveying device; 11. a fixed seat; 12. a chain wheel transmission pair; 13. a drive motor; 2. a heat preservation bin; 21. a bin body; 211. a heat-insulating layer; 2111. a housing; 2112. an inner shell; 2113. a thermal insulation lining body; 21131. mounting holes; 212. a heating cavity; 22. a heat preservation cavity; 23. an opening; 24. a door curtain; 3. a main chord tube; 4. a heating member; 5. a shield; 6. moving the trolley; 7. a track.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
Fig. 1 to 5 show an embodiment of the post-welding heat preservation system for the main chord pipes according to the present invention, which includes a conveying device 1 and a plurality of pairs of heat preservation bins 2, wherein each pair of heat preservation bins 2 is respectively disposed at two sides of the conveying device 1, the heat preservation bins 2 at the same side are sequentially butted, when the conveying device 1 conveys the welded main chord pipes 3 to the position of one of the pairs of heat preservation bins 2, the annular welding seams at two ends of the main chord pipes 3 are located in the heat preservation bins 2 at the corresponding sides, and the temperature in each pair of heat preservation bins 2 is sequentially reduced along the conveying direction of the main chord pipes 3. In the structure, the temperature in each pair of heat preservation bins 2 is sequentially reduced along the conveying direction of the main chord pipes 3, when the heat preservation system operates, the welded main chord pipes 3 are conveyed to the high-temperature heat preservation bins 2 by the conveying device 1, the annular welding seams at the two ends of the main chord pipes 3 are ensured to be positioned in the heat preservation bins 2 at the corresponding sides, the heat preservation bins 2 are used for carrying out heat preservation and aging on the annular welding seams at the two ends of the main chord pipes 3, after the heat preservation is carried out for a certain time, the heat preservation bins are sequentially conveyed into each pair of heat preservation bins 2 with gradually reduced temperature, the heat preservation and aging are correspondingly carried out, the welding stress concentration can be reduced, the welding seams are prevented; the heat preservation aging mode with the temperature decreasing gradually has the advantages of good heat preservation and energy saving effects, stable temperature uniformity and accurate temperature control.
In this embodiment, the heat preservation cabin 2 includes the storehouse body 21, has seted up the heat preservation chamber 22 on the storehouse body 21, and the storehouse body 21 is equipped with three openings 23 that are used for main chord 3 to carry to the heat preservation chamber 22 in main chord 3 direction of delivery and just to main chord 3, and each opening 23 department all is provided with the door curtain 24 that can open and close. In the structure, the three openings 23 enable the heat preservation cavity 22 to be of a U-shaped structure, so that the input and the output of the main chord pipe 3 can be ensured; and the arrangement of the door curtain 24 can realize the opening and closing of each opening 23, ensure the input and output of the main chord 3 and ensure the heat preservation effect.
In this embodiment, the two door curtains 24 of the bin body 21 in the conveying direction of the main chord 3 are soft curtains, and the door curtain 24 of the bin body 21 in the direction opposite to the main chord 3 is provided with a lifting plate. Because the continuous conveying of the main chord pipe 3 is ensured, two door curtains 24 in the conveying direction of the main chord pipe 3 are soft curtains, have a deformation function and can adapt to the forced conveying of the main chord pipe 3, lifting plates are arranged right opposite to the door curtains 24 in the direction of the main chord pipe 3, full-fiber products are filled in the door curtains, the door curtains are lifted by adopting an electric mechanism, the door curtains are limited in stroke and are electrically interlocked safely, and the furnace door and the furnace mouth are sealed by adopting customized special-shaped rubber pipes and are compressed by adopting an air cylinder locking mechanism.
In this embodiment, the bin body 21 comprises an insulating layer 211 and a heating cavity 212, and the heating cavity 212 is located between the insulating layer 211 and the insulating cavity 22. In this structure, the heating cavity 212 is a cavity structure and is isolated by the insulating layer 211, so that the temperature is transferred to the insulating cavity 22, and the insulating effect is improved.
In this embodiment, the heating cavity 212 surrounds the incubation cavity 22 except for the opening 23. The arrangement is such that the heat preservation chamber 22 is surrounded in three directions, and three-direction temperature transfer is realized.
In this embodiment, the insulation layer 211 includes an outer shell 2111, an inner shell 2112, and an insulation liner 2113, and the insulation liner 2113 is filled between the outer shell 2111 and the inner shell 2112. The outer shell 2111, the inner shell 2112 and the heat-insulating lining 2113 form a three-layer structure, so that the heat-insulating effect is further improved.
In this embodiment, the thermal liner 2113 is provided with a heating element 4 extending into the heating chamber 212. The heating element 4 heats the heating cavity 212 to raise the temperature, and the temperature is transmitted to the heat preservation cavity 22, so that the structure is simple and reliable.
In this embodiment, the heat-insulating lining 2113 is provided with an installation hole 21131, the heating element 4 is an electric heating tube, and the electric heating tube is installed in the installation hole 21131 and extends into the heating cavity 212. In the structure, the heating cavity 212 is heated by the electric heating tube, and the electric heating tube is arranged in the mounting hole 21131, so that the quick assembly and disassembly can be realized, and the maintenance and the replacement are convenient.
In this embodiment, the housing 2111 is provided with a shield 5 for covering the electric heating tube. The cover 5 covers the mounting hole 21131 and the heating element 4 to ensure the aesthetic appearance, and also ensures the sealing property to prevent the temperature loss from the mounting hole 21131.
In the embodiment, the heat preservation device further comprises a movable trolley 6 and a track 7, wherein the track 7 is laid on the side portion of the conveying device 1, the movable trolley 6 is installed on the track 7, the movable trolley 6 and the moving direction are perpendicular to the conveying direction of the conveying device 1, and the heat preservation cabin 2 is installed on the movable trolley 6. In this structure, through the removal of travelling car 6 on track 7, can drive the removal in heat preservation storehouse 2, can adjust the distance between two heat preservation storehouses 2 in other words to be suitable for the long main chord pipe 3 of different pipes, improved its adaptability greatly.
In this embodiment, the conveying device 1 includes a pair of fixing bases 11, a sprocket transmission pair 12 is disposed between the two fixing bases 11, and a driving motor 13 for driving the sprocket transmission pair 12 to operate is installed on one of the fixing bases 11. In the structure, the conveying device 1 is provided with a pair of conveying devices for bearing the main chord pipes 3, and the driving motor 13 drives the chain wheel transmission pair 12 to operate, so that the main chord pipes 3 are driven to move, and the conveying function of the main chord pipes 3 is realized.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a weld back heat preservation system for main chord tube which characterized in that: including conveyor (1) and many to heat preservation storehouse (2), every is every divide equally to establish in conveyor (1) both sides heat preservation storehouse (2), dock in proper order with heat preservation storehouse (2) of one side, when conveyor (1) will weld main chord pipe (3) carry to one of them when heat preservation storehouse (2) position, the annular weld at main chord pipe (3) both ends is located heat preservation storehouse (2) of corresponding side, and the temperature in each heat preservation storehouse (2) reduces in proper order along the direction of delivery of main chord pipe (3).
2. The post-weld insulation system for a main chord tube according to claim 1, wherein: the heat preservation bin (2) comprises a bin body (21), a heat preservation cavity (22) is formed in the bin body (21), three openings (23) used for conveying the main chord tube (3) into the heat preservation cavity (22) are formed in the bin body (21) in the conveying direction of the main chord tube (3) and in the direction opposite to the main chord tube (3), and door curtains (24) capable of being opened and closed are arranged at the positions of the openings (23).
3. The post-weld insulation system for a main chord tube according to claim 2, wherein: the two door curtains (24) of the bin body (21) in the conveying direction of the main chord tube (3) are soft curtains, and the door curtain (24) of the bin body (21) in the direction opposite to the main chord tube (3) is provided with a lifting plate.
4. The post-weld insulation system for main chord tubes according to claim 3, wherein: the bin body (21) comprises a heat insulation layer (211) and a heating cavity (212), and the heating cavity (212) is located between the heat insulation layer (211) and the heat insulation cavity (22). The heating chamber (212) encloses a holding chamber (22) except for an opening (23).
5. The post-weld insulation system for main chord tubes according to claim 4, wherein: the heat-insulating layer (211) comprises an outer shell (2111), an inner shell (2112) and a heat-insulating lining body (2113), wherein the heat-insulating lining body (2113) is filled between the outer shell (2111) and the inner shell (2112).
6. The post-weld insulation system for main chord tubes according to claim 5, wherein: the heat-insulating lining body (2113) is provided with a heating element (4) extending into the heating cavity (212).
7. The post-weld insulation system for main chord tubes according to claim 6, wherein: offer mounting hole (21131) on the heat preservation lining body (2113), heating member (4) set up to the electrothermal tube, the electrothermal tube is installed in mounting hole (21131) and is extended in heating chamber (212).
8. The post-weld insulation system for a main chord tube according to claim 7, wherein: the shell (2111) is provided with a shield (5) for covering the electric heating tube.
9. The post-weld insulation system for a main chord tube according to any one of claims 1 to 8, wherein: the heat preservation device is characterized by further comprising a movable trolley (6) and a track (7), wherein the track (7) is laid on the side portion of the conveying device (1), the movable trolley (6) is installed on the track (7), the movable trolley (6) and the moving direction are perpendicular to the conveying direction of the conveying device (1), and the heat preservation cabin (2) is installed on the movable trolley (6).
10. The post-weld insulation system for a main chord tube according to any one of claims 1 to 8, wherein: the conveying device (1) comprises a pair of fixing seats (11), a chain wheel transmission pair (12) is arranged between the two fixing seats (11), and a driving motor (13) used for driving the chain wheel transmission pair (12) to run is installed on one fixing seat (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011309741.XA CN112355527A (en) | 2020-11-20 | 2020-11-20 | Post-welding heat preservation system for main chord tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011309741.XA CN112355527A (en) | 2020-11-20 | 2020-11-20 | Post-welding heat preservation system for main chord tube |
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| Publication Number | Publication Date |
|---|---|
| CN112355527A true CN112355527A (en) | 2021-02-12 |
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| CN202011309741.XA Pending CN112355527A (en) | 2020-11-20 | 2020-11-20 | Post-welding heat preservation system for main chord tube |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4694131A (en) * | 1984-05-31 | 1987-09-15 | Daiichi Koshuha Kogyo Kabushiki Kaisha | Induction heating method and apparatus for relieving residual stress in welded joint between main and branch pipes |
| CN205414754U (en) * | 2016-03-15 | 2016-08-03 | 嘉兴能发电子科技有限公司 | Battery pack's automatic stringer |
| CN207435507U (en) * | 2017-10-20 | 2018-06-01 | 中国石油天然气集团公司 | Pipeline-weld insulation quilt |
| CN110394570A (en) * | 2018-04-24 | 2019-11-01 | 君泰创新（北京）科技有限公司 | Welding method and system |
| CN214291507U (en) * | 2020-11-20 | 2021-09-28 | 湖南九方焊接技术有限公司 | Post-welding heat preservation system for main chord tube |
-
2020
- 2020-11-20 CN CN202011309741.XA patent/CN112355527A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4694131A (en) * | 1984-05-31 | 1987-09-15 | Daiichi Koshuha Kogyo Kabushiki Kaisha | Induction heating method and apparatus for relieving residual stress in welded joint between main and branch pipes |
| CN205414754U (en) * | 2016-03-15 | 2016-08-03 | 嘉兴能发电子科技有限公司 | Battery pack's automatic stringer |
| CN207435507U (en) * | 2017-10-20 | 2018-06-01 | 中国石油天然气集团公司 | Pipeline-weld insulation quilt |
| CN110394570A (en) * | 2018-04-24 | 2019-11-01 | 君泰创新（北京）科技有限公司 | Welding method and system |
| CN214291507U (en) * | 2020-11-20 | 2021-09-28 | 湖南九方焊接技术有限公司 | Post-welding heat preservation system for main chord tube |
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