CN202349419U - Metal joint pipe fitting - Google Patents
Metal joint pipe fitting Download PDFInfo
- Publication number
- CN202349419U CN202349419U CN2011203766847U CN201120376684U CN202349419U CN 202349419 U CN202349419 U CN 202349419U CN 2011203766847 U CN2011203766847 U CN 2011203766847U CN 201120376684 U CN201120376684 U CN 201120376684U CN 202349419 U CN202349419 U CN 202349419U
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- pipe fitting
- pipe
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- welding
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- 239000002184 metal Substances 0.000 title claims abstract description 20
- 238000003466 welding Methods 0.000 claims abstract description 95
- 230000004323 axial length Effects 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000001681 protective effect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a metal joint pipe fitting, which comprises a pipe fitting body and welded joint ends arranged at individual interface sites of the pipe fitting body, wherein a liner pipe region which is inserted into a hole cavity of a pipe to be welded and a welding region which is butted with the welded end of the pipe to be welded are arranged in sequence from outside to inside at each welded joint end, the shape of each liner pipe is matched with the shape of the hole cavity of the corresponding pipe to be welded, and the welding regions are higher than the liner pipe regions. In the metal joint pipe fitting, the liner pipe regions effectively isolate the high-temperature metal at the inner side part of the welding seam from the air inside the pipe, so as to eliminate the need of blowing a shielding gas to the inner side part of the welding seam during the gas shielded welding. Besides, the final welding effect is controlled by adjusting the height difference between the welding region and the liner pipe region. Furthermore, the pipe of the liner pipe region is not liable to be burnt out, and the problem of overlap welding is effectively avoided.
Description
Technical field
The utility model belongs to metallic conduit link structure-design technique field, is specifically related to a kind of metal joint pipe fitting.
Background technique
The safest in the metallic conduit Placement, reliable connection method is welded to connect beyond doubt.But existing several kinds of Placements for example spigot and socket type are welded to connect or dock welding connecting mode certain defective is all arranged, especially for the welding of thin-wall stainless steel.
The spigot and socket type welding connecting mode is seen shown in Figure 1, has following deficiency: (1) join strength is lower; Spigot and socket type is welded to connect and is the overlap joint connection; Its weld seam is a filler weld; Suffered working stress is for cutting shearing stress, and by the working strength computational methods, and the effective bearing area of fillet weld is 0.707 times of effective area of fillet weld; When therefore lap weld designs, need the bilateral welding just can make weld strength and member (generally being pipe A and joint pipe fitting B) equal strength.And pipe is connected with the socket joint of pipe fitting, in practice of construction, can only implement one-sided welding at pipe fitting one side, and the pipe place end that inserts pipe fitting can't weld, so the weld strength of bayonet joint joint can only reach 50% of pipeline strength.(2) the welding difficulty is bigger, is prone to the burn-through tube wall, necessary gas-filled protective in the pipe, spigot and socket type welding; Because insert the pipe of pipe fitting, tube wall is thinner, when welding, must make the fusing of pipe fitting port; Can form effective fillet weld, and the pipe fitting end is inserted the influence of pipe heat radiation, need have bigger heat input could form the molten bath, the tube wall of pipe is thinner; Very easily overheated being burnt, if the heat input is less, pipe fitting end can merge bad, so operation easier is bigger.If each soldering opening is applied gas-filled protective, the job site condition is limited, and very difficult, working strength is bigger, and working efficiency is very low.
The butt joint welding connecting mode is seen shown in Figure 2, has following deficiency; Butt-welded pipe A port outside diameter is identical with pipe fitting B external diameter, and welding is in addition with the filler welding, during welding; If the inboard of connection mouth does not add the gas protection; Pipe inside weld place " extension knurl " (molten knurl) very easily appears outward in weld seam owing to welding temperature is overheated, in actual use, hang the flow rate that knurl has promptly blocked water; Be prone to make thin-wall stainless steel to produce intergranular corrosion, reduction of service life again.If temperature is crossed low non-fusion, the both sides tube wall of weld seam joint does not connect fully, influences service property (quality).
The model utility content
The purpose of the utility model provides that a kind of welding process is simple, efficient is higher, Weld Performance preferred metal joint pipe fitting.
The technological scheme that realizes the utility model purpose is: a kind of metal joint pipe fitting; Comprise the pipe fitting body and be arranged on the welded ends of each jointing of body that said welded ends sets gradually along direction from outside to inside and is useful on bushing pipe district that inserts in the pipe fitting vestibule to be welded and the welding zone that docks with pipe fitting welding ends to be welded; The profile in said bushing pipe district and the shape of pipe fitting vestibule to be welded match; Said welding zone exceeds the bushing pipe district.
In the technique scheme, the radial cross section shape that said welding zone exceeds the part body in bushing pipe district matches with the radial cross section shape of pipe fitting welding ends tube wall to be welded.
In the technique scheme, the gap between the outer wall in said bushing pipe district and the pipe fitting vestibule inwall to be welded is less than 1 millimeter; The wall thickness in said bushing pipe district is more than or equal to 0.3 millimeter.
In the technique scheme, the gap between the outer wall in said bushing pipe district and the pipe fitting vestibule inwall to be welded is less than 0.5 millimeter; The wall thickness in said bushing pipe district is more than or equal to 0.5 millimeter.
In the technique scheme, the axial length in said bushing pipe district forms the axial length of weld seam more than or equal to the welding back.
In the technique scheme, the radial cross section shape of part body that said welding zone exceeds the bushing pipe district is identical with the radial cross section shape of pipe fitting welding ends tube wall to be welded.
In the technique scheme, said pipe fitting to be welded is a thin-wall stainless steel.
In the technique scheme, said pipe fitting body is pipe joint, threeway, four-way, straight-through or elbow.
In the technique scheme, it is the plane parallel with welding zone body radial cross section or or the inclined-plane or the arc shaped surface that have angle with welding zone body radial cross section that said welding zone is used for the shape of the face of weld of pipe fitting welding ends to be welded butt joint.
Said pipe fitting to be welded can be a plain end pipe, also can be pipe joint, threeway, four-way, straight-through or elbow or the like.
The utlity model has positive effect: (1) the utility model has improved the linkage structure of pipe fitting joint; Said bushing pipe district can play the location pipe fitting to be welded with by the effect of welded tube spare; Again because of covering in the inside line of weld seam; It is effectively isolated that high-temperature metal and the inner air tube of weld seam inside line are obtained, thereby when carrying out gas shielded arc welding, need not to blow shielding gas to the weld seam inside line; In addition, the weld of the utility model be pipe fitting welding ends to be welded with by ground, the welding zone joint of welded tube spare; Owing to exceeded the bushing pipe district by welded tube spare welding zone; And the radial cross section shape that said welding zone exceeds the part body in bushing pipe district matches with the radial cross section shape of pipe fitting welding ends tube wall to be welded, thereby can adjust final welding effect through the height difference in adjustment welding zone and bushing pipe district.The radial cross section shape that for example exceeds the part body in bushing pipe district to the welding zone is processed identical size with the radial cross section of pipe fitting welding ends tube wall to be welded; Concerning pipe; Make by the external diameter of welded tube spare welding zone identical exactly with the external diameter of pipe fitting to be welded; For this structure, final weld strength is reached and two ends pipe fitting same intensity, thereby can obviously improve weld strength with respect to traditional spigot and socket type welding; And compare with traditional dock welding, again because the protection in bushing pipe district is arranged, need not in pipe, to charge into protection gas, and be difficult for burning bushing pipe district tube wall, prevent and hang the knurl phenomenon.
Description of drawings
Fig. 1 is a kind of structural representation of first kind of structure of the utility model;
Fig. 2 is a kind of structural representation of second kind of structure of the utility model;
Fig. 3 is a kind of structural representation of the third structure of the utility model;
Fig. 4 is a kind of structural representation of the 4th kind of structure of the utility model;
Fig. 5 is a kind of structural representation of the 5th kind of structure of the utility model;
Fig. 6 is a kind of structural representation of the 6th kind of structure of the utility model;
Fig. 7 is the local enlarged diagram at A place among Fig. 6;
Fig. 8 is a kind of application schematic representation of metal joint pipe fitting shown in Figure 2.
Be labeled as shown in the accompanying drawing: by welded tube spare 1, connecting end 2, bushing pipe district 21, welding zone 22, face of weld 221, pipe fitting 3 to be welded, vestibule 31, welding ends 32, weld seam 4.
Embodiment
(embodiment 1)
Fig. 1 is a kind of structural representation of first kind of structure of the utility model, has shown first kind of embodiment of the utility model.
Present embodiment is the tee union pipe fitting that a kind of stainless steel is processed; The pipe fitting body 1 and the welded ends 2 that is arranged on body 1 each jointing that comprise the threeway pattern, said welded ends 2 set gradually along direction from outside to inside and are useful on bushing pipe district 21 that inserts in the pipe fitting vestibule to be welded and the welding zone 22 that docks with pipe fitting welding ends to be welded; The profile in said bushing pipe district 21 and the shape of pipe fitting vestibule to be welded match; Said welding zone 22 exceeds bushing pipe district 21.
The radial cross section shape that said welding zone 22 exceeds the part body in bushing pipe district 21 matches with the radial cross section shape of pipe fitting welding ends tube wall to be welded.In the present embodiment, the radial cross section shape of part body that said welding zone 22 exceeds bushing pipe district 21 is identical with the radial cross section shape of pipe fitting welding ends tube wall to be welded; In concrete practice, can be so that the external diameter of said welding zone 22 be a bit larger tham or less than the external diameter of pipe fitting welding ends tube wall to be welded.
In the present embodiment, the gap between the outer wall in said bushing pipe district 21 and pipe fitting to be welded 3 vestibules 31 inwalls is less than 0.1 millimeter; In concrete practice, can come according to the diameter of pipe fitting vestibule 31 to be welded this gap length is adjusted, for example when vestibule 31 is big; Can select big gap for use, for example select 1 millimeter, when vestibule 31 hour; Then select less gap for use; Generally speaking, this gap is more little good more, can play more to make the isolated effect of air in weld seam inside line and the vestibule; For gas shielded arc welding, this point is particularly important.
The axial length in said bushing pipe district 21 forms the axial length of weld seam more than or equal to the welding back; This be for fear of when welding melting zone solid accumulation form in the outside, bushing pipe district and hang the knurl phenomenon.
In the present embodiment; The wall thickness in said bushing pipe district 21 is 0.5 millimeter, if because the wall thickness in bushing pipe district 21 is too thin, will when welding, be burnt easily; Influence welding effect or form and hang the knurl phenomenon, so generally speaking the wall thickness in bushing pipe district is made more than or equal to 0.3 millimeter; Certainly can not be too thick, in order to avoid the resistance when too increasing mass transport in the pipe, in the concrete practice, its thickness can decide according to the vestibule size, and vestibule is big, and the wall thickness in bushing pipe district 21 can be a little greatly.
In the present embodiment, said welding zone 22 be used for the shape of the face of weld 221 of pipe fitting welding ends to be welded butt joint be and the parallel plane of body radial cross section, welding zone.
(embodiment 2)
Fig. 2 is a kind of structural representation of second kind of structure of the utility model, has shown second kind of embodiment of the utility model.
Present embodiment and embodiment 1 are basic identical, and difference is: the pipe fitting body 1 in the present embodiment is the straight-through pipe fitting that stainless steel is processed.
(embodiment 3)
Fig. 3 is a kind of structural representation of the third structure of the utility model, has shown the third embodiment of the utility model.
Present embodiment and embodiment 2 are basic identical, and difference is: in the present embodiment, the shape of the face of weld 221 that said welding zone 22 is used for docking with pipe fitting welding ends to be welded is arc shaped surfaces.
(embodiment 4)
Fig. 4 is a kind of structural representation of the 4th kind of structure of the utility model, has shown the 4th kind of embodiment of the utility model.
Present embodiment and embodiment 2 are basic identical, and difference is: the pipe fitting body 1 in the present embodiment is the bend pipe tools that stainless steel is processed.
(embodiment 5)
Fig. 5 is a kind of structural representation of the 5th kind of structure of the utility model, has shown the 5th kind of embodiment of the utility model.
Present embodiment and embodiment 3 are basic identical, and difference is: in the present embodiment, the shape of the face of weld 221 that said welding zone 22 is used for docking with pipe fitting welding ends to be welded is the inclined-planes that have angle with welding zone body radial cross section.
(embodiment 6)
Fig. 6 and Fig. 7 have shown the 6th kind of the utility model more specifically mode of execution, and wherein Fig. 6 is a kind of structural representation of the 6th kind of structure of the utility model, and Fig. 7 is the local enlarged diagram at A place among Fig. 6.
Present embodiment and embodiment 5 are basic identical; Difference is: in the present embodiment, it is by camber line face and the step surface that combines with the parallel plane of body radial cross section, welding zone that said welding zone 22 is used for the shape of the face of weld 221 of pipe fitting welding ends to be welded butt joint.
(application examples 1)
Fig. 8 is a kind of application schematic representation of metal joint pipe fitting shown in Figure 2, has shown a kind of concrete application mode of the foregoing description 2.
Should use-case be a kind of concrete application mode of the foregoing description 2; See shown in Figure 8ly, during welding, at first bushing pipe district 21 is inserted in the vestibule 31 of pipe 3 to be welded; And welding zone 22 is docked with the welding ends 32 of pipe 3 to be welded; In the present embodiment, the external diameter of said welding zone 22 is identical with the external diameter of pipe welding ends 32 to be welded, and the axial length in said bushing pipe district 21 forms the axial length of weld seam 4 more than or equal to the welding back.
This kind structure is when adopting the gas shielded arc welding welding, because the protective action in bushing pipe district 21 need not in pipe, to charge into shielding gas, so greatly simplified welding operation; Because the thermolysis in bushing pipe district 21 makes bushing pipe district 21 be difficult for being burnt, and produces thereby effectively prevent to hang knurl.
Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the mode of execution of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection domain of the utility model.
Claims (9)
1. metal joint pipe fitting; Comprise pipe fitting body (1) and be arranged on the welded ends (2) of each jointing of body (1), it is characterized in that: said welded ends (2) sets gradually along direction from outside to inside and is useful on bushing pipe district (21) that inserts in the pipe fitting vestibule to be welded and the welding zone (22) that docks with pipe fitting welding ends to be welded; The profile in said bushing pipe district (21) and the shape of pipe fitting vestibule to be welded match; Said welding zone (22) exceeds bushing pipe district (21).
2. metal joint pipe fitting according to claim 1 is characterized in that: the radial cross section shape that said welding zone (22) exceed the part body in bushing pipe district (21) matches with the radial cross section shape of pipe fitting welding ends tube wall to be welded.
3. metal joint pipe fitting according to claim 1 is characterized in that: the gap between the outer wall in said bushing pipe district (21) and the pipe fitting vestibule inwall to be welded is less than 1 millimeter; The wall thickness in said bushing pipe district is more than or equal to 0.3 millimeter.
4. metal joint pipe fitting according to claim 3 is characterized in that: the gap between the outer wall in said bushing pipe district (21) and the pipe fitting vestibule inwall to be welded is less than 0.5 millimeter; The wall thickness in said bushing pipe district is more than or equal to 0.5 millimeter.
5. metal joint pipe fitting according to claim 1 is characterized in that: the axial length in said bushing pipe district (21) forms the axial length of weld seam more than or equal to the welding back.
6. metal joint pipe fitting according to claim 1 is characterized in that: the radial cross section shape of part body that said welding zone (22) exceed bushing pipe district (21) is identical with the radial cross section shape of pipe fitting welding ends tube wall to be welded.
7. metal joint pipe fitting according to claim 1 is characterized in that: said pipe fitting to be welded is a thin-wall stainless steel.
8. metal joint pipe fitting according to claim 1 is characterized in that: said pipe fitting body (1) is pipe joint, threeway, four-way, straight-through or elbow.
9. metal joint pipe fitting according to claim 1 is characterized in that: said welding zone (22) are used for the shape of the face of weld (221) of pipe fitting welding ends to be welded butt joint is the plane parallel with welding zone body radial cross section or or the inclined-plane or the arc shaped surface that have angle with welding zone body radial cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203766847U CN202349419U (en) | 2011-10-08 | 2011-10-08 | Metal joint pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203766847U CN202349419U (en) | 2011-10-08 | 2011-10-08 | Metal joint pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349419U true CN202349419U (en) | 2012-07-25 |
Family
ID=46538426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203766847U Expired - Fee Related CN202349419U (en) | 2011-10-08 | 2011-10-08 | Metal joint pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202349419U (en) |
-
2011
- 2011-10-08 CN CN2011203766847U patent/CN202349419U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG TIANLI JIUTIAN PIPE INDUSTRY CO., LTD. Free format text: FORMER OWNER: RUAN JICHENG Effective date: 20131231 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131231 Address after: 325600, No. seventeen, No. 221, weft Road, Yueqing Economic Development Zone, Zhejiang, Zhejiang (B Electric Co., Ltd.) Patentee after: Zhejiang Tianli long Tian tube industry limited company Address before: Yueqing City, Zhejiang province 325600 Liushi Zhen Xi Xing Road No. 113 Patentee before: Ruan Jicheng |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20151008 |
|
| EXPY | Termination of patent right or utility model |