CN205254380U - A composite set for weld preheating of thick wall pressure vessel - Google Patents
A composite set for weld preheating of thick wall pressure vessel Download PDFInfo
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- CN205254380U CN205254380U CN201521116932.9U CN201521116932U CN205254380U CN 205254380 U CN205254380 U CN 205254380U CN 201521116932 U CN201521116932 U CN 201521116932U CN 205254380 U CN205254380 U CN 205254380U
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- preheating
- standard thread
- pressure vessel
- nozzle
- support
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Abstract
The utility model relates to a composite set for weld preheating of thick wall pressure vessel. It is solved the heavy wall vessels effectively and preheats problem difficult, that make extravagant material of frock and cycle length. A composite set for weld preheating of thick wall pressure vessel, the device includes standard screw thread cross, standard screw thread tee bend, nozzle, metal hose and support, the metal hose be provided with a plurality of combination circlewise, two adjacent metal hoses through standard screw cross -connection between two adjacent metal hoses of looks interface, are connected with the nozzle through standard screw tee junction in the standard screw tee bend, standard screw thread tee bend wear to locate in the preformed hole of support. The utility model discloses with the preheating device that nozzle and high temperature resistant flexible connecting pipe made up, it is powerful strong by the flame that jet goes out, improved and preheated efficiency and gas utilization ratio, satisfied the requirement of preheating of different diameter heavy wall vesselss, saved gas and material simultaneously, just there is convenient operation, preheating effect advantage such as good.
Description
Technical field
The utility model relates to a kind of combination unit for thick-walled pressure vessel weld preheating.
Background technology
Current petrochemical industry, pressure vessel is all towards high parameter, major diameter, heavy wall future development, and these nonstandard thick-walled vessels need welding position to carry out preheating before welding. Preheat temperature is determined according to factors such as the contained degree of the condition of delivery of mother metal, chemical composition, mechanical property, welding performance, thickness and weldment. The preheat temperature scope of Fe1 ~ Fe9b steel, from 15 DEG C ~ 300 DEG C, needs to adopt reasonably device to meet this requirement.
Preheating is the earliest to toast with oxyacetylene gas cutting handgrip butt welded seam, needs special messenger to operate, and this preheating insulation effect is poor, and is local preheating, is unfavorable for welding, often occurs weld crack and the quality accident such as reprocesses, and has wasted a large amount of man power and materials.
Adopted afterwards the mode of jewel hole on seamless steel pipe, pass into the fuel gas such as propane to pipeline, preheating weld seam, flame does not have dynamics, always do not reach preheating requirement, and combustion gas utilization rate is also very low, in use cylindrical shell is often by roasting black, carburizing, and material property reduces, and every kind of frock must match with cylindrical shell external diameter, internal diameter or shape, device diameters, change of shape, must make bend pipe again, waste material.
Heat tape is also a kind of preheating method, and pre-heat effect is relatively good, but layout once needs to spend a large amount of human and material resources, more expensive by heat tape preheating expense, in factory building, does not generally adopt.
Utility model content
The utility model object is to provide a kind of combination unit for thick-walled pressure vessel weld preheating, and it effectively solves thick-walled vessel preheating difficulty, makes frock waste material and long problem of cycle.
The problem existing for solving prior art, the technical solution of the utility model is: a kind of combination unit for thick-walled pressure vessel weld preheating, it is characterized in that: this device comprises standard thread four-way, standard thread threeway, nozzle, flexible pipe and support, described flexible pipe is provided with several and is combined into ring-type, adjacent two flexible pipes connect by standard thread threeway, between adjacent two flexible pipes of interfaces, connect by standard thread four-way, in standard thread threeway, be connected with nozzle, described standard thread threeway is arranged in the preformed hole of support.
The structure of described support is inverse u shape, on its upper surface, is provided with preformed hole.
The described outer wall of standard thread threeway and the preformed hole of support closely cooperate.
Described preformed hole diameter is than the large 0.5mm of standard thread threeway end size, and standard thread threeway end is provided with tapering.
Described flexible pipe is high-temperature flexible pipe.
Compared with prior art, advantage of the present utility model is as follows:
The preheating device that the utility model is combined into nozzle and high-temperature flexible tube connector, the flame being gone out by nozzle ejection is strong and powerful, the pre-thermal efficiency and combustion gas utilization rate are improved, meet the preheating requirement of different-diameter thick-walled vessel, combustion gas and material have been saved simultaneously, and have easy to operate, the advantage such as pre-heat effect is good.
Brief description of the drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of support;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the outside the utility model device sketch that uses of cylindrical shell;
Fig. 5 is that inner barrel is used the utility model device sketch;
Fig. 6 is that cylindrical shell longitudinal joint uses the utility model device sketch;
Fig. 7 is the fixed new device sketch that cylindrical shell longitudinal joint uses;
Fig. 8 is nozzle arrangements schematic diagram;
Fig. 9 is that inner barrel is used the utility model device nozzle reinforcing figure;
Brief description of the drawings: 1-standard thread four-way, the threeway of 2-standard thread, 3-nozzle, 4-flexible pipe, 5-support, cranse in 6-rigidity, 7-treats preheating cylindrical shell, 8-seamless steel pipe, 9-cushion block.
Detailed description of the invention
By reference to the accompanying drawings and detailed description of the invention the utility model is described in further details:
Referring to Fig. 1: a kind of combination unit for thick-walled pressure vessel weld preheating, this device comprises standard thread four-way 1, standard thread threeway 2, nozzle 3, flexible pipe 4 and support 5, described flexible pipe 4 is provided with several and is combined into ring-type, adjacent two flexible pipes 4 connect by standard thread threeway 2, between adjacent two flexible pipes 4 of interfaces, connect by standard thread four-way 1, in standard thread threeway 2, be connected with nozzle 3, described standard thread threeway 2 is arranged in the preformed hole of support 5.
The structure of described support 5 is inverse u shape, on its upper surface, is provided with preformed hole, and preformed hole is provided with 2 (referring to Fig. 2 and Fig. 3).
The outer wall of described standard thread threeway 2 and the preformed hole of support 5 closely cooperate.
Described preformed hole diameter is than the large 0.5mm of standard thread threeway 2 end size, and standard thread threeway 2 ends are provided with tapering.
Described flexible pipe 4 is high-temperature flexible pipe.
The utility model is considered coordinating of the standard thread threeway 2 of when assembling and support 5, and the diameter of reserving circular hole on support 5 should be than the large 0.5mm of standard thread threeway 2 external diameter. Overall structure is to allow double rows of nozzles reposefully across weld seam both sides.
The threeway 2 of the utility model standard thread is threaded with nozzle 3; High-temperature flexible pipe 4 is threaded with standard thread threeway 2; Standard thread four-way 1 is threaded with high-temperature flexible pipe 4.
The utility model standard thread threeway 2 closely cooperates with support 5, is supported in equipment outer wall.
Embodiment mono-(referring to Fig. 4):
When the utility model uses for cylindrical shell is outside:
In the time that device is assembled in cylinder body outer wall, mid portion connects with standard thread threeway 2, and end connects with standard thread four-way 1, and whole circle preheating device is fixedly supported on device external.
Embodiment bis-(referring to Fig. 5 and Fig. 9):
When the utility model uses for inner barrel:
In the time that device is assembled in inner barrel, must support preheating combination unit with cranse in rigidity 6, make bearing and barrel laminating, in rigidity, cranse 6 is placed on support 5 and tightens with thin wire, fix with thin wire, on each support, set up 2 covers " U " type screw bolt reinforcing standard thread threeway 2, meet resistance to overturning requirement.
Embodiment tri-(referring to Fig. 6 and Fig. 7):
The utility model is used for longitudinal joint combined type:
During for longitudinal seam preheating, assembly can be assembled in and treat preheating cylindrical shell 7 longitudinal joint places along rectilinear direction; The welding tip 3 of holing on seamless steel pipe 8, device two ends pave to be used in cushion block 9 treats preheating cylindrical shell 7 longitudinal joint places; While taking over outside weld seam preheating, can be around nozzle assembling preheating device; While taking over root preheating, taking over root assembling; Can also be assembled according to equipment concrete shape. Distance between nozzle and barrel must be suitable, is beneficial to nozzle ejection flame and is advisable.
When preheating longitudinal joint, can adopt sub-assembly; Also nozzle 3 directly can be welded in to use (referring to Fig. 7) on seamless steel pipe 8.
The concrete operating procedure of three kinds of embodiment of the utility model is as follows:
First,, according to treating cranse 6, support 5 etc. in preheating shell ring diameter preparation high-temperature flexible pipe 4, standard thread threeway 2, standard thread four-way 1, nozzle 3, rigidity, determine its quantity, ease of assembly.
Secondly, will treat that preheating shell ring is put on turning rolls, starts to assemble preheating device. Standard thread threeway 2 is threaded with nozzle 3, then high-temperature flexible pipe 4 is connected with standard thread threeway 2, connect and compose successively whole circle, end connection standard screw thread four-way 1.
If at the outside assembling of cylindrical shell preheating device, standard thread threeway 2 and support 5 are assembled, correcting bracket 5 makes it across weld seam both sides, and ensures preheating device entirety steadily.
If at inner barrel assembling preheating device, standard thread threeway 2 and support 5 are assembled, and by " U " type screw bolt reinforcing. After having assembled, add cranse 6 in rigidity in frock inner side, support 5 is leaned against reposefully and treat on preheating cylindrical shell 7 inwalls.
Finally, pass into fuel gas and compressed air from standard thread four-way 1 two other interface, light and rear cylindrical shell weld seam is carried out to preheating.
The nozzle of preheating combination unit and support member utilize stock processing: heat exchanger tube, round steel, steel plate. Through current revolutionary transformation, same set of device is applicable to different-diameter, the weld preheating of different wall equipment, by lengthening or shorten the length of high-temperature flexible pipe 4, change the shape of package unit, be applicable to cylindrical shell preheating, end socket preheating, the adapter preheating of various shapes, the scope of application is wider.
The utlity model has following several advantage:
1) this preheating device is simple in structure, easy to assembly.
2) this preheating device adopts high-temperature flexible pipe to connect, and can adapt to equipment and the parts of various diameters and shape, and applicability is strong.
3) this preheating device adopts the nozzle of particular design, makes fuel gas buring abundant, and utilization rate is high, saves the energy.
4) effectively utilized materials in storage, production cost is low.
5) after this preheating device manufacture completes, be applicable to the pressure vessel of all diameters, reduced frock manufacturing cost.
Claims (5)
1. the combination unit for thick-walled pressure vessel weld preheating, it is characterized in that: this device comprises standard thread four-way (1), standard thread threeway (2), nozzle (3), flexible pipe (4) and support (5), described flexible pipe (4) is provided with several and is combined into ring-type, adjacent two flexible pipes (4) connect by standard thread threeway (2), between adjacent two flexible pipes (4) of interfaces, connect by standard thread four-way (1), in standard thread threeway (2), be connected with nozzle (3), described standard thread threeway (2) is arranged in the preformed hole of support (5).
2. a kind of combination unit for thick-walled pressure vessel weld preheating according to claim 1, is characterized in that: the structure of described support (5) is inverse u shape, on its upper surface, is provided with preformed hole.
3. a kind of combination unit for thick-walled pressure vessel weld preheating according to claim 1 and 2, is characterized in that: the outer wall of described standard thread threeway (2) and the preformed hole of support (5) closely cooperate.
4. a kind of combination unit for thick-walled pressure vessel weld preheating according to claim 3, is characterized in that: described preformed hole diameter is than the large 0.5mm of standard thread threeway (2) end size, and standard thread threeway (2) end is provided with tapering.
5. a kind of combination unit for thick-walled pressure vessel weld preheating according to claim 4, is characterized in that: described flexible pipe (4) is high-temperature flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521116932.9U CN205254380U (en) | 2015-12-30 | 2015-12-30 | A composite set for weld preheating of thick wall pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521116932.9U CN205254380U (en) | 2015-12-30 | 2015-12-30 | A composite set for weld preheating of thick wall pressure vessel |
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| Publication Number | Publication Date |
|---|---|
| CN205254380U true CN205254380U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521116932.9U Active CN205254380U (en) | 2015-12-30 | 2015-12-30 | A composite set for weld preheating of thick wall pressure vessel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332956A (en) * | 2018-11-27 | 2019-02-15 | 安徽省特种设备检测院 | Thermal process after a kind of welding preheating |
| CN110039222A (en) * | 2018-01-17 | 2019-07-23 | 兰州兰石重型装备股份有限公司 | Thermal and its application method after the welding preheating of major-diameter thick-wall end socket piece |
| CN114734129A (en) * | 2022-03-02 | 2022-07-12 | 上海工程技术大学 | Electric arc welding pre-welding preheating and post-welding slow cooling device |
-
2015
- 2015-12-30 CN CN201521116932.9U patent/CN205254380U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039222A (en) * | 2018-01-17 | 2019-07-23 | 兰州兰石重型装备股份有限公司 | Thermal and its application method after the welding preheating of major-diameter thick-wall end socket piece |
| CN109332956A (en) * | 2018-11-27 | 2019-02-15 | 安徽省特种设备检测院 | Thermal process after a kind of welding preheating |
| CN114734129A (en) * | 2022-03-02 | 2022-07-12 | 上海工程技术大学 | Electric arc welding pre-welding preheating and post-welding slow cooling device |
| CN114734129B (en) * | 2022-03-02 | 2023-07-25 | 上海工程技术大学 | Pre-welding preheating and post-welding slow cooling device for arc welding |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |