CN201702526U - Special welding protective cover for stainless steel heat-resistant steel pipe elbow - Google Patents
Special welding protective cover for stainless steel heat-resistant steel pipe elbow Download PDFInfo
- Publication number
- CN201702526U CN201702526U CN2010202126995U CN201020212699U CN201702526U CN 201702526 U CN201702526 U CN 201702526U CN 2010202126995 U CN2010202126995 U CN 2010202126995U CN 201020212699 U CN201020212699 U CN 201020212699U CN 201702526 U CN201702526 U CN 201702526U
- Authority
- CN
- China
- Prior art keywords
- butt tube
- welding
- end cap
- protective cover
- adapter sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A special welding protective cover for a stainless steel heat-resistant steel pipe elbow is applied in the technical field of elbow welding. One end of a connecting sleeve takes the shape of a cylinder, and the other end thereof takes the shape of a hexahedron. A screw and a tightening nut are arranged in a center screw hole of the connecting sleeve, two circular gaskets and a rubber sealing plate are fixed between a left mating pipe and the connecting sleeve, two circular gaskets and the rubber sealing plate are fixed between a right mating pipe and an end cap, the end cap is provided with a center hole, and an argon inlet pipe is fixed in the center hole of the end cap by welding. The special welding protective cover has the effects that when the welding protective cover is used for welding elbows, one-time welding pass rate reaches above 99%, so that argon and time for filling pipes with argon are saved, internal molding of welding seams is good, welding joint performance and welding quality are ensured, construction cost is greatly reduced, and working efficiency is improved.
Description
Technical field
The utility model relates to stainless steel, the heat resisting pipe bend pipe welding technology field of industries such as oil, chemical industry, metallurgy, and particularly a kind of argon shield welding is a kind of stainless steel, heat resisting pipe bend pipe special welding protective cover.
Background technology
At present, find high-alloy stainless steel and heat resisting pipe bent tube section welding difficulty in the work progress,, guarantee seam organization and performance more because of adopting inert gas-shielded arc welding seam (the industry argon gas of using) inside and outside the welding point; Prevent defectives such as welding point oxidation, generation pore.But argon filling deficiency in the practice of construction process because in the pipe causes the weld seam internal oxidation, and toughness reduces and the fragility increase, and the welding first-time qualification rate is lower, is the hang-up of puzzlement engineering construction quality always.For the welding of straight length, use existing high-alloy stainless steel, heat resisting pipe welding protection cover to construct, but be not suitable for the bend pipe weld bond.
The utility model content
The purpose of this utility model is: a kind of stainless steel, heat resisting pipe bend pipe special welding protective cover are provided, improve the weld seam first-time qualification rate, economical with materials reduces construction cost, increases work efficiency the safe operation of assurance equipment and pipeline.
The technical solution adopted in the utility model is: stainless steel, heat resisting pipe bend pipe special welding protective cover; mainly form by screw rod, clamp nut, adapter sleeve, pad, rubber gasket sheet, butt tube, end cap and argon gas inlet tube; it is characterized in that: butt tube is made up of left butt tube and right butt tube, and left butt tube is identical with the external diameter of right butt tube.One end of adapter sleeve is the cylinder bodily form, and outer wall has screw thread, and the other end of adapter sleeve is hexahedron shape and center screw is arranged.A screw rod is arranged in the adapter sleeve center screw, clamp nut is arranged on screw rod.In the internal thread that screws into left butt tube one end of adapter sleeve, between left butt tube and adapter sleeve, be fixed with two annular pads, between two annular pads, accompany the rubber gasket sheet of annular.
End cap one end has internal thread, is connected with right butt tube on the end cap internal thread.Between right butt tube and end cap, be fixed with two annular pads, between two annular pads, accompany the rubber gasket sheet of annular.End cap has centre bore, is welded with the argon gas inlet tube in the end cap centre bore.On the wall of butt tube, be evenly distributed with radial hole.
After the special welding protective cover is used, can in the good bend pipe of the Chinese, take out, on the outer wall of end cap, be welded with draw ring; Be fixed with connecting rod in right butt tube, the end of connecting rod is connected with the inner of screw rod by flexibly connecting piece.When pulling outward right butt tube, flexibly connect piece drive screw rod and adapter sleeve, pad and rubber gasket sheet and together pull out by draw ring.
When welding in order to make, gap between two bend pipes to be welded is even, is symmetrically welded with annulus on the outer wall of butt tube, when U type card being inserted in the circular hole of two annulus, compress two bend pipes to be welded, the gap width between two bend pipes to be welded just in time is the diameter of U type card.U type card is simmered with steel bar.
The using method of summary stainless steel, heat resisting pipe bend pipe special welding protective cover.Consult Fig. 2.
(1) the protective cover right half part is put into bend pipe 13 to be welded, the left-half of protective cover put into need with the pipe of bend pipe 13 to be welded, position, U type card division and weld seam are aligned, wherein the diameter of U type card is identical with weld seam counterpart gap width.
(2) with adhesive tape with the gap temporary sealing between two bend pipes 13 to be welded, then by argon gas inlet tube 12 beginning argon fillings.
(3) begin welding (time can determine that argon filling is abundant in guaranteeing to manage according to the welded tube internal diameter) behind argon filling 2～5min, the side weld limit tears the temporary sealing adhesive tape off and takes down U type card in the welding process.
(4) (weld seam residue 5～10mm) is turned argon pressure down, in order to avoid form indent because of argon pressure causes last welding portion greatly when backing run closes to an end.
(5) continued argon filling 2～3 minutes after welding finishes.
(6) utilize pull ring 10 to extract protective cover out after welding job finishes.
The beneficial effects of the utility model: the utility model stainless steel, heat resisting pipe bend pipe special welding protective cover; the welding first-time qualification rate is greater than 99%; saved the argon filling time in argon gas and the pipe; and the inner moulding of weld seam is good; guarantee property of welded joint and welding quality; significantly reduce construction cost, increase work efficiency.Bend pipe special welding protective cover size can be adjusted according to different bore sizes.
Description of drawings
Fig. 1 is the utility model stainless steel, heat resisting pipe bend pipe special welding protective cover structural profile schematic diagram.
Fig. 2 is to use view.
Among the figure, 1. screw rod, 2. clamp nut, 3. adapter sleeve, 4. pad, 5. rubber gasket sheet, 6. butt tube 7. flexibly connects piece, 8. connecting rod, 9. ring tube, 10. draw ring, 11. end caps, 12. argon gas inlet tubes, 13. bend pipes.
The specific embodiment
Embodiment 1: with one is that to be used for stainless steel, heat resisting pipe bend pipe special welding protective cover that internal diameter is 75 millimeters bend pipe butt welding be example, and the utility model is described in further detail.
Consult Fig. 1.The utility model stainless steel, heat resisting pipe bend pipe special welding protective cover mainly are made up of screw rod 1, clamp nut 2, adapter sleeve 3, pad 4, rubber gasket sheet 5, butt tube 6, flexible connection piece 7, connecting rod 8, annulus 9, draw ring 10, end cap 11 and argon gas inlet tube 12.Butt tube 6 is made up of left butt tube and right butt tube, and the external diameter of left butt tube and right butt tube is 25 millimeters.One end of adapter sleeve 3 is the cylinder bodily form, and outer wall has screw thread, and the other end of adapter sleeve 3 is hexahedron shape and center screw is arranged.A screw rod 1 is arranged in adapter sleeve 3 center screws, clamp nut 2 is arranged on screw rod 1.In the internal thread that screws into left butt tube one end of adapter sleeve 3, between left butt tube and adapter sleeve 3, be fixed with two annular pads 4, between two annular pads 4, accompany the rubber gasket sheet 5 of annular.
On the outer wall of end cap 11, be welded with draw ring 10; Be fixed with connecting rod 8 in right butt tube, the end of connecting rod 8 is connected with the inner of screw rod 1 by flexibly connecting piece 7.
Be symmetrically welded with annulus 9 on the outer wall of butt tube 6, the endoporus of annulus 9 is 8 millimeters.
Claims (3)
1. stainless steel, heat resisting pipe bend pipe special welding protective cover, mainly by screw rod (1), clamp nut (2), adapter sleeve (3), pad (4), rubber gasket sheet (5), butt tube (6), end cap (11) and argon gas inlet tube (12) are formed, it is characterized in that: butt tube (6) is made up of left butt tube and right butt tube, left side butt tube is identical with the external diameter of right butt tube, one end of adapter sleeve (3) is the cylinder bodily form, outer wall has screw thread, the other end of adapter sleeve (3) is hexahedron shape and center screw is arranged, in adapter sleeve (3) center screw, a screw rod (1) is arranged, clamp nut (2) is arranged on screw rod (1), in the internal thread that screws into left butt tube one end of adapter sleeve (3), between left butt tube and adapter sleeve (3), be fixed with two annular pads (4), between two annular pads (4), accompany the rubber gasket sheet (5) of annular;
End cap (11) one ends have internal thread, be connected with right butt tube on end cap (11) internal thread, between right butt tube and end cap (11), be fixed with two annular pads (4), between two annular pads (4), accompany the rubber gasket sheet (5) of annular, end cap (11) has centre bore, in end cap (11) centre bore, be welded with argon gas inlet tube (12), on the wall of butt tube (6), be evenly distributed with radial hole.
2. stainless steel according to claim 1, heat resisting pipe bend pipe special welding protective cover is characterized in that: be welded with draw ring (10) on the outer wall of end cap (11); Be fixed with connecting rod (8) in right butt tube, the end of connecting rod (8) is connected with the inner of screw rod (1) by flexibly connecting piece (7).
3. stainless steel according to claim 1, heat resisting pipe bend pipe special welding protective cover is characterized in that: be symmetrically welded with annulus (9) on the outer wall of butt tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202126995U CN201702526U (en) | 2010-05-24 | 2010-05-24 | Special welding protective cover for stainless steel heat-resistant steel pipe elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202126995U CN201702526U (en) | 2010-05-24 | 2010-05-24 | Special welding protective cover for stainless steel heat-resistant steel pipe elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201702526U true CN201702526U (en) | 2011-01-12 |
Family
ID=43439674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202126995U Expired - Lifetime CN201702526U (en) | 2010-05-24 | 2010-05-24 | Special welding protective cover for stainless steel heat-resistant steel pipe elbow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201702526U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368921A (en) * | 2014-11-19 | 2015-02-25 | 长沙成进汽车配件有限公司 | In-pipe welding seam gas protection device used for stainless steel pipe machine |
| CN109175875A (en) * | 2018-10-08 | 2019-01-11 | 上海建工七建集团有限公司 | The adjustable pairing device of weld seam and its construction method for super-large diameter steel-pipe welding |
-
2010
- 2010-05-24 CN CN2010202126995U patent/CN201702526U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368921A (en) * | 2014-11-19 | 2015-02-25 | 长沙成进汽车配件有限公司 | In-pipe welding seam gas protection device used for stainless steel pipe machine |
| CN104368921B (en) * | 2014-11-19 | 2017-01-11 | 长沙成进汽车配件有限公司 | In-pipe welding seam gas protection device used for stainless steel pipe machine |
| CN109175875A (en) * | 2018-10-08 | 2019-01-11 | 上海建工七建集团有限公司 | The adjustable pairing device of weld seam and its construction method for super-large diameter steel-pipe welding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201394704Y (en) | Argon-filling welding protective cover | |
| CN102581059A (en) | Hydrostatic pressure expanding composite technology for bimetal composite pipe | |
| CN201702498U (en) | Board-stopping device used for gas shielded welding of large-caliber pipeline and long pipeline | |
| CN201102129Y (en) | Argon-in tube protection energy conservation equipment | |
| CN201702526U (en) | Special welding protective cover for stainless steel heat-resistant steel pipe elbow | |
| CN201615295U (en) | Metal pipe welding structure | |
| CN202972264U (en) | Combined type anti-loosing pipe joint sealing structure | |
| CN107893887A (en) | A kind of expansion type joint of flexible pipe | |
| CN207421596U (en) | A kind of biting connecions connector of hose | |
| CN206694735U (en) | Spliced pipeline maintenance dedicated connecting sleeve | |
| CN204829000U (en) | Stainless steel pipe fitting extends limit connection structure | |
| CN201606621U (en) | Leaking stoppage device of gas pipeline | |
| CN104741747B (en) | Aluminium alloy argon arc welding argon-filling device | |
| CN204300573U (en) | A kind of bimetallic composite reducing crossover sub | |
| CN207421597U (en) | A kind of connector of hose | |
| CN209724247U (en) | A kind of oil field shaft mouth lining plastic fast and safely attachment device | |
| CN210860190U (en) | Special-shaped internal thread copper-plated steel pipe | |
| CN209100831U (en) | Assembling pipe joint | |
| CN207455001U (en) | A kind of extrusion type joint of hose | |
| CN201795891U (en) | Circumscribed pressure pipe joint of pressure transmitter for measuring pressure | |
| WO2021103880A1 (en) | Repair structure for welding defect of high-alloy pipes | |
| CN201799763U (en) | Split type stainless steel pipeline welding back filled argon protection device | |
| CN206943663U (en) | A kind of seamless steel alloy HTHP elbow of the butt welding with straight length | |
| CN107725938A (en) | A kind of rack-and-pinion joint of flexible pipe | |
| CN201599502U (en) | Welding structure of evaporator aluminum pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |
|
| CX01 | Expiry of patent term |