CN203778939U - Welded steel pipe heat-insulation structure - Google Patents
Welded steel pipe heat-insulation structure Download PDFInfo
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- CN203778939U CN203778939U CN201420150230.1U CN201420150230U CN203778939U CN 203778939 U CN203778939 U CN 203778939U CN 201420150230 U CN201420150230 U CN 201420150230U CN 203778939 U CN203778939 U CN 203778939U
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- sleeve
- steel pipe
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- heat
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Abstract
The utility model discloses a welded steel pipe heat-insulation structure. The structure comprises a sleeve, wherein one end of the sleeve is fixedly connected with an external semi-sealed structure; a cleaning mechanism is mounted at one tenth of the internal circumference of the sleeve; a heat-insulation layer is arranged at the residual nine tenth of the internal circumference of the sleeve; the thickness of the heat-insulation layer is gradually decreased in the direction of the other end of the sleeve; the cleaning mechanism faces a welding seam of a steel pipe; as the temperature of the welding seam of the steel pipe is higher, the sleeve plays a role of providing an environment condition capable of achieving temperature reduction for the welding seam of the welded steel pipe, in addition, bosses generated by welding or residual solder are cleaned, the influence of the sudden temperature change on the strength of welding is avoided, and the degree of finish of the external surface of the welded steel pipe is guaranteed.
Description
Technical field
The utility model relates to a kind of argon arc welding machine, specifically refers to welded still pipe insulation construction.
Background technology
Stainless steel welded pipe requires fusion penetration through welding; oxide-free is mingled with, and heat affected area is as far as possible little, and the argon arc welding of tungsten electrode noble gas protecting has good adaptability; welding quality is high, through welding performance is good, and its product is used widely in the industry such as chemical industry, nuclear industry and food.Speed of welding is not high is the weak point of argon arc welding, and for improving speed of welding, foreign study has been developed several different methods.Wherein adopt the welding method of the many welding torches of multi-electrode to apply aborning by the development of single electrode list welding torch.The general argon arc welding that adopts three electrode welding torches, welded still pipe wall thickness S >=2mm, speed of welding improves 3-4 doubly than single welding torch, and welding quality is also improved.Argon arc welding and plasma weldering combination can be welded the steel pipe of larger wall thickness, in addition, and the hydrogen of 5-10% in argon gas, then adopt the high-frequency impulse source of welding current, also can improve speed of welding.First the joint of preparing welding is handled well, adopt the filling metal doing with the welding wire of 904L material of the same race, one side welding one side is watered weld seam with cold water, welding temperature is controlled at below 80 DEG C, speed of welding is more than 45～50 cm per minute, weld seam breadth depth ratio remains on 1.5: 1～between 2: 1, and weldment thickness≤12mm.Then carry out acid wash passivation processing at face of weld.Its advantage is to weld at low temperatures, the conversion between molecule does not occur in 904L stainless steel inside, has avoided the phenomenon of fragility conversion, and the bulk deformation of weldment has been controlled in the generation of the defects such as intercrystalline corrosion while also having avoided welding, fire check.
When steel-pipe welding, for ensureing good welding effect, generally by soldering tip with treat that Coiling Welded Pipe is placed in semiclosed sealing device, when conveniently passing into protective gas, while also avoiding welding, Mars splashes everywhere.But after steel pipe partial welding, weld seam is directly exposed in air, due to the difference of air themperature and weld seam self temperature, can make weld seam by high temperature directly to low-temperature transformation, steel pipe seam is because the cataclysm of temperature during this time, can reduce the intensity of self, the stability in use of steel pipe is reduced, when serious, can directly cause steel pipe seam sealing-off; And when welding in,, because many reasons can cause occurring on steel pipe more projection, has a strong impact on the tidiness of outer surface of steel tube.
Utility model content
The purpose of this utility model is to provide welded still pipe insulation construction, avoids steel pipe seam to occur that more projection affects the tidiness of the outer surface of steel pipe, reduces steel pipe seam sealing-off phenomenon simultaneously and occurs.
The purpose of this utility model is achieved through the following technical solutions:
Welded still pipe insulation construction, comprise sleeve, one end of described sleeve is fixedly connected with outside Semi-seal structure, on 1/10th inner peripherys of described sleeve, cleaning mechanism is installed, on remaining 9/10ths inner peripherys of described sleeve, be provided with heat-insulation layer, the thickness of described heat-insulation layer reduces gradually along sleeve other end direction.The utility model in use, welding complete steel pipe is sent out by the outlet of Semi-seal structure, directly enter into sleeve, cleaning mechanism is the commissure to steel pipe just, because the temperature at steel pipe seam place self is higher, the effect of sleeve is to provide the environmental condition that can lower the temperature gradually for welding complete steel pipe seam place, the projection or the residual scolder that simultaneously will welding produce are removed, avoid temperature abrupt change impact welding intensity and ensure steel-pipe welding after the fineness of outer surface; On sleeve lining, on remaining 9/10ths inner peripherys, be provided with heat-insulation layer, and the diameter of heat-insulation layer radially reduces along sleeve other end direction, can make the part of steel pipe except commissure within a period of time, keep certain temperature, make on steel pipe, to occur multiple temperature provinces of successively decreasing gradually in sleeve, make steel pipe integral keep weld strength in a stable temperature environment, avoid the variation of steel pipe seam Yin Wendu and cause remitted its fury, reduce steel pipe seam sealing-off phenomenon and occur.
Described cleaning mechanism comprises blade and baffle plate, and described baffle plate is fixed on sleeve lining, has dovetail groove on sleeve lining, and blade is slidably arranged in dovetail groove, is connected blade and the laminating of steel-pipe welding place when use between blade and baffle plate by spring.In welded still pipe enters sleeve time; blade directly contacts with weld seam; both produce interaction force, after blade is stressed, in dovetail groove, slide, and spring is compressed; in the time that the compression limit of spring reaches maximum; the projection that blade starts on butt welded seam is cleared up, and the spring between baffle plate and blade becomes soft contact by blade in the past with rigid contact of weld seam, at the cleaning effect that does not affect blade; protect to greatest extent blade, reduced the loss of blade.
Described heat-insulation layer comprises nylon cloth cover, mineral wool and mineral wool from outside to inside successively.Steel pipe seam place is the highest part of temperature after steel-pipe welding, also be to keep the most important part of weld strength, utilize the remaining temperature of welding by blade, the projection of weld and residual scolder to be removed, simultaneously heat-insulation layer directly closes with steel pipe consideration, nylon cloth cover can make the temperature of steel pipe body reduce gradually, avoid the rapid drawdown of steel pipe body local temperature, in nylon cloth cover, distribute mineral wool and mineral wool are set, mineral wool has stronger high-temperature stability, can ensure the stability of heat-insulation layer continuous firing, being used in conjunction with of mineral wool and mineral wool can keep its intensity by steel pipe seam under stable temperature environment, ensure the serviceability of steel pipe.
Also comprise rubber blanket, described rubber blanket is arranged on sleeve and is connected on the inwall of one end with outside Semi-seal structure, and rubber blanket is circular arc.Rubber blanket can enter between sleeve the small embossment of scolder residual on steel pipe and generation is cleaned out at steel pipe, avoids scolder to enter in sleeve the nylon cloth cover wearing and tearing of the second heat-insulation layer, the service life of prolongation attemperator.
Described spring is at least three.
The utility model compared with prior art, has following advantage and beneficial effect:
1, the utility model welded still pipe insulation construction, cleaning mechanism is the commissure to steel pipe just, because the temperature at steel pipe seam place self is higher, the effect of sleeve is to provide the environmental condition that can lower the temperature gradually for welding complete steel pipe seam place, the projection or the residual scolder that simultaneously will welding produce are removed, avoid temperature abrupt change impact welding intensity and ensure steel-pipe welding after the fineness of outer surface;
2, the utility model welded still pipe insulation construction, rubber blanket can enter between sleeve the small embossment of scolder residual on steel pipe and generation is cleaned out at steel pipe, avoid scolder to enter in sleeve cotton hard bubbling of the second heat-insulation layer wearing and tearing, the service life of prolongation attemperator.
3, the utility model welded still pipe insulation construction, the spring between baffle plate and blade becomes soft contact by blade in the past with rigid contact of weld seam, at the cleaning effect that does not affect blade, has protected to greatest extent blade, has reduced the loss of blade.
Brief description of the drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms the application's a part, does not form the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is side view of the present utility model;
Fig. 3 is the structural representation of embodiment 1;
Mark and corresponding parts title in accompanying drawing:
1-sleeve, 2-heat-insulation layer, 3-nylon cloth cover, 4-mineral wool, 5-mineral wool, 6-rubber blanket, 7-Semi-seal structure, 8-steel pipe, 9-weld seam, 10-blade, 11-baffle plate, 12-spring, 13-dovetail groove.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, the utility model welded still pipe insulation construction, comprise sleeve 1, one end of described sleeve 1 is fixedly connected with outside Semi-seal structure 7, on 1/10th inner peripherys of described sleeve 1, cleaning mechanism is installed, on remaining 9/10ths inner peripherys of described sleeve 1, be provided with heat-insulation layer 2, the thickness of described heat-insulation layer 2 reduces gradually along sleeve 1 other end direction; Described heat-insulation layer 2 comprises nylon cloth cover 3, and nylon cloth cover 3 and sleeve 1 inwall adhesion, overlap 3 interior mineral wool 5 and the mineral wools 4 of being disposed with up and down at described nylon cloth; Also comprise rubber blanket 6, described rubber blanket 6 is arranged on sleeve 1 and is connected on the inwall of one end with outside Semi-seal structure 7, and rubber blanket 6 is circular arc.
The utility model in use, welding complete steel pipe 8 is sent out by the outlet of Semi-seal structure 7, directly enter into sleeve 1, cleaning mechanism is weld seam 9 places to steel pipe 8 just, because the temperature at steel pipe 8 weld seam 9 places self is higher, the effect of sleeve 1 is to provide the environmental condition that can lower the temperature gradually for welding complete steel pipe 8 weld seam 9 places, the projection simultaneously welding being produced or the removing of residual scolder, avoid the abrupt change of temperature to affect the intensity of welding and ensure the fineness of the rear outer surface of steel pipe 8 welding; On sleeve 1 inwall, on remaining 9/10ths inner peripherys, be provided with heat-insulation layer 2, and the diameter of heat-insulation layer 2 radially reduces along sleeve 1 other end direction, can make the part of steel pipe 8 except weld seam 9 is sentenced within a period of time, keep certain temperature, make to occur multiple temperature provinces of successively decreasing gradually on the interior steel pipe 8 of sleeve 1, make steel pipe 8 entirety keep weld strength in a stable temperature environment, avoid steel pipe 8 weld seams 9 because the variation of temperature causes remitted its fury, reduce steel pipe 8 weld seam 9 sealing-off phenomenons and occur.
Cleaning mechanism comprises blade 10 and baffle plate 11, described baffle plate 11 is fixed on sleeve 1 inwall, on sleeve 1 inwall, has dovetail groove 13, and blade 10 is slidably arranged in dovetail groove 13, between blade 10 and baffle plate 11, be connected blade 10 and steel pipe 8 weld laminatings when use by spring 12.When welded still pipe 8 enters sleeve 1 when interior; blade 10 directly contacts with weld seam 9; both produce interaction force; after blade 10 is stressed in the interior slip of dovetail groove 13; spring 12 is compressed; in the time that the compression limit of spring 12 reaches maximum; the projection that blade 10 starts on butt welded seam 9 is cleared up; spring 12 between baffle plate 11 and blade 10 becomes soft contact by blade 10 in the past with rigid contact of weld seam 9; at the cleaning effect that does not affect blade 10; protect to greatest extent blade 10, reduced the loss of blade 10.
Steel pipe 8 weld seam 9 places are the highest parts of temperature after steel pipe 8 welding, also be to keep the most important part of weld strength, utilize the remaining temperature of welding by blade 10, the projection of weld and residual scolder to be removed, simultaneously heat-insulation layer 2 is directly fitted with steel pipe 8 bodys, nylon cloth cover 3 can make the temperature of steel pipe 8 bodys reduce gradually, avoid steel pipe 8 body local temperature rapid drawdowns, overlap 3 interior distributions at nylon cloth mineral wool 5 and mineral wool 4 are set, mineral wool 4 has stronger high-temperature stability, can ensure the stability of heat-insulation layer 2 continuous firings, mineral wool 5 can keep its intensity by steel pipe 8 weld seams 9 with being used in conjunction with of mineral wool 4 under stable temperature environment, ensure the serviceability of steel pipe 8, rubber blanket 6 can enter between sleeve 1 small embossment of scolder residual on steel pipe 8 and generation is cleaned out at steel pipe 8, avoids scolder to enter into the interior cover of the nylon cloth by the second heat-insulation layer 23 wearing and tearing of sleeve 1, extends the service life of attemperator.
Above-described detailed description of the invention; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only detailed description of the invention of the present utility model; and be not used in limit protection domain of the present utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. welded still pipe insulation construction, comprise sleeve (1), one end of described sleeve (1) is fixedly connected with outside Semi-seal structure (7), it is characterized in that: on 1/10th inner peripherys of described sleeve (1), cleaning mechanism is installed, on remaining 9/10ths inner peripherys of described sleeve (1), be provided with heat-insulation layer (2), the thickness of described heat-insulation layer (2) reduces gradually along sleeve (1) other end direction.
2. welded still pipe insulation construction according to claim 1, it is characterized in that: described cleaning mechanism comprises blade (10) and baffle plate (11), described baffle plate (11) is fixed on sleeve (1) inwall, on sleeve (1) inwall, have dovetail groove (13), blade (10) is slidably arranged in dovetail groove (13), between blade (10) and baffle plate (11), be connected blade when use (10) and the laminating of steel pipe (8) weld by spring (12).
3. welded still pipe insulation construction according to claim 1, is characterized in that: described heat-insulation layer comprises nylon cloth cover (3), mineral wool (4) and mineral wool (5) from outside to inside successively.
4. welded still pipe insulation construction according to claim 1, is characterized in that: also comprise rubber blanket (6), described rubber blanket (6) is arranged on sleeve (1) and is connected on the inwall of one end with outside Semi-seal structure (7), and rubber blanket (6) is circular arc.
5. welded still pipe insulation construction according to claim 2, is characterized in that: described spring (12) is at least three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420150230.1U CN203778939U (en) | 2014-03-31 | 2014-03-31 | Welded steel pipe heat-insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420150230.1U CN203778939U (en) | 2014-03-31 | 2014-03-31 | Welded steel pipe heat-insulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203778939U true CN203778939U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420150230.1U Expired - Fee Related CN203778939U (en) | 2014-03-31 | 2014-03-31 | Welded steel pipe heat-insulation structure |
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| Country | Link |
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| CN (1) | CN203778939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846532A (en) * | 2014-03-31 | 2014-06-11 | 成都振中电气有限公司 | Insulation structure for steel tube welding |
-
2014
- 2014-03-31 CN CN201420150230.1U patent/CN203778939U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846532A (en) * | 2014-03-31 | 2014-06-11 | 成都振中电气有限公司 | Insulation structure for steel tube welding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20150331 |
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| EXPY | Termination of patent right or utility model |