CN201103755Y - Adapting form argon arc welding connecting pipe fitting for connecting thin-wall stainless steel tube - Google Patents
Adapting form argon arc welding connecting pipe fitting for connecting thin-wall stainless steel tube Download PDFInfo
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- CN201103755Y CN201103755Y CNU200720191307XU CN200720191307U CN201103755Y CN 201103755 Y CN201103755 Y CN 201103755Y CN U200720191307X U CNU200720191307X U CN U200720191307XU CN 200720191307 U CN200720191307 U CN 200720191307U CN 201103755 Y CN201103755 Y CN 201103755Y
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- stainless steel
- pipe fitting
- argon arc
- arc welding
- spigot
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Abstract
The utility model discloses a socket-type argon arc welding connecting pipe unit used for connecting a stainless steel thin-wall tube and comprises a pipe body and a socket port; wherein, a fusion welding part is arranged in an inlet of the socket port; a basic shape of an axial section of the fusion welding part is a ladder. The socket-type argon arc welding connecting pipe unit has the advantages of simple welding procedure, higher efficiency and better welding performance.
Description
Technical field
The utility model belongs to stainless steel pipe structure-design technique field, is specifically related to a kind of bayonet joint pipe fitting that is used to connect thin-wall stainless steel.
Background technique
Abroad the application Stainless Steel Tube opens and starts from the sixties in last century, and through the development of decades, developed country is general day by day to the application of Stainless Steel Tube in building water supply, water treatment system, and sets up a middle more complete standard.AN-SI/NSF61-1997A NBS/national health fund international standard that the U.S. formulates according to water purification, clearly being given for and handling the metallic material of quoting water only is stainless steel and spheroidal graphite cast iron.Stainless Steel Tube has been newly-built more than 1600 municipal sewage (WWTP) the standard material of the U.S..Other also all admit the above-mentioned standard of the U.S. as Her Majesty the Queen in right of Canada as represented by the minister of Healt, RVA (Dutch evaluation committee) and the World Health Organization, now quote the pipeline of water system and system unit also with the basis of above-mentioned standard as health reassurance.
Japan is as far back as the beginning of the seventies in last century, because the continuous deterioration of quoting water water quality in the pipe network, Stainless Steel Tube has been installed and used in beginning in building, is generalized to subsequently to bury the ground water pipe.At present, the existing 80% above resident family in area, Tokyo has changed intake pipe (connecting tube between resident family and the main pipe) into Stainless Steel Tube, thereby makes the pipe network leak rate descend 7.7%, has saved great amount of water resources.In addition in the water treatment plant, water conduit bridge and bridge to add the stainless application of frame tube side face also very extensive.
Compare with other tubing, the advantage of Stainless Steel Tube is a lot: one, tensile strength height.General steel pipe tensile strength is about 300mpa, and the tensile strength of copper pipe is about 200mpa, and Stainless Steel Tube tensile strength is 2 times of steel pipe, is 3 times of copper pipe.Two, corrosivity is good.The reason of pipe leakage, " killer " of its maximum is exactly chlorion, and 304 stainless steel ability 200ppm chlorides, 316 stainless steels can be resisted the muriatic natural water of 1000ppm in practice, this is particularly important to large-scale building.From the electromotive force sequence, stainless steel and cast iron more are difficult for chemically reacting, and in actual applications, can assemble with copper base alloy joint (or copper hot water pump), and is practical, effective.Stainless steel has more obvious corrosion resistance in quoting water, be because there is the chromium protective oxide layer of one deck densification on its surface, and in case when drawing line, under the situation that has air to exist, can form new protective oxide layer immediately; Also because it can bear the impact of high flow rate, therefore can resist the corrosion that the mouth of pipe of flowing through, bend pipe, valve and pump backwash cause simultaneously; Heat conduction system tree is little, good heat insulating.Four, environmental protection.Stainless Steel Tube is nontoxic, incrustation not, the secondary pollution that can stop pipeline; Anti-various acid-base salt solution; Compare with other tubing, heavy metal (Ni, Cr, the Mo) amount that leaches in the water reaches less, and it is minimum to leach into metal in the purified water (Na, Fe, Ca) amount; Product can 100% recovery.
Thin-wall stainless steel just occurs on the market in the last world end of the nineties at home, but, building water supply and direct drinking pipeline have been widely used at present because thin-wall stainless steel has safety durable, environmental protection sanitary, reasonable price, excellent comprehensive performance such as luxurious attractive in appearance.
Because the wall thickness of thin-wall stainless steel may diminish to 0.5mm, so its Placement and connection effect are very big to the influence of whole pipe.Mostly the at present domestic welding manner that thin-wall stainless steel is adopted is spigot and socket type argon arc welding and dock argon arc welding.
The argon arc welding technology is on the basis of the principle of common electrical arc-welding; utilize the protection of argon gas to the metal wlding; make wlding on by the weldering base material, be melted into the liquid bath that forms by high electric current; make a kind of welding technique that is reached metallurgy combination by weldering metal and wlding; owing in the high-temperature fusion welding, constantly serve argon gas; wlding can not be contacted with airborne oxygen, thereby prevented the oxidation of wlding, therefore can soldering copper, non-ferrous metals such as aluminium, alloyed steel.Because argon arc welding can form more than 1000 degree centigrade bath in welding, its combination force is a metallurgy combination, and combination is very firm after the welding.But spigot and socket type argon arc welding welding during present connection thin-wall stainless steel and dock argon arc welding, all need replenish stainless silk in the joint of pipe fitting as scolder, its shortcoming is: (1) welding process complexity, difficulty is higher, operative skill to the welder is had relatively high expectations, efficient is lower, and therefore cost of production also improves, and weld seam is difficult to accomplish meticulous level and smooth.(2) welding current is bigger, easily causes welding part tube wall penetration dross, in actual use, has promptly blocked the flow rate of water, easily makes thin-wall stainless steel produce intergranular corrosion, reduction of service life again.
The model utility content
The purpose of this utility model provides the spigot and socket type argon arc welding connection pipe fitting that a kind of welding process is simple, efficient is higher, Weld Performance is used to connect thin-wall stainless steel preferably.
The technological scheme that realizes the utility model purpose is: a kind of spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel comprises body and joint socket; The ingress of described joint socket is provided with fusion-welded portion, and the basic shape of the axial cross section of described fusion-welded portion is trapezoidal.
Described trapezoidal be right-angled trapezium, its length near one side of joint socket inlet be more than or equal to the Stainless Steel Tube wall thickness 1/3rd and smaller or equal to 2/3rds of Stainless Steel Tube wall thickness, be preferably greater than equal the Stainless Steel Tube wall thickness 1/2nd and smaller or equal to 2/3rds of Stainless Steel Tube wall thickness, the length on described one side away from joint socket inlet be greater than the rust thickness of steel pipe 1/2nd and smaller or equal to the wall thickness of Stainless Steel Tube.
Described trapezoidal height is more than or equal to 0.5mm.
Described hypotenuse is positioned at the outer surface of joint socket inlet.
Described hypotenuse is straight line or camber line.
Described pipe fitting is isometrical or the connection pipe fitting of reducing.
Described pipe fitting is pipe joint, threeway, four-way, straight-through or elbow.
The utlity model has positive effect:
(1) the utility model is provided with fusion-welded portion in the ingress of described joint socket, and the basic shape of the axial cross section of described fusion-welded portion is set to trapezoidal; Such structure is to draw traditional spigot and socket type pipeline connection to be connected both length with the welding type pipeline, and carries out organic combination, is a kind of argon arc welding formula pipe fitting Placement of innovation, so that the welding performance of better thin-wall stainless steel to be provided.The utility model is when implementing the argon arc welding welding, need not to replenish welding wire, only need earlier connecting tube to be inserted the joint socket in the utility model, weld then, described fusion-welded portion at high temperature melts, necessary welding wire when having replaced traditional argon arc welding welding is compared with traditional argon arc welding welding, has that welding process is simple, efficient is higher, the meticulous level and smooth advantage of weld seam.
(2) the utility model is provided with fusion-welded portion in the ingress of joint socket, and the basic shape of the axial cross section of described fusion-welded portion is set to trapezoidal; This structure is also different fully with the bevelled dock weld-end fittings of traditional needs, and it is to add the sealing weld silk that traditional weld-end fittings needs bevelled reason, opens cut and can make weld seam smoother, appearance looks elegant and raising weld strength; Fusion-welded portion in the utility model then is by reducing the thickness of fusion-welded portion, and make fusion-welded portion that a more suitable transition be arranged in the variation of thickness, such structural design is when carrying out the argon arc welding welding, described fusion-welded portion melts away soon, replace traditional welding wire, thereby the utility model and connecting tube are sealedly connected.
(3) the utility model is compared with traditional spigot and socket type welding, can shorten the degree of depth of socket joint, generally can shorten 1/3rd to 1/2nd, thereby reduce materials consumption, reduces cost.
(4) the utility model is compared with traditional spigot and socket type welding, need not to use welding wire, thereby reduces materials consumption, reduces cost.
Description of drawings
Fig. 1 is a kind of perspective view of the present utility model;
Fig. 2 is the topology view of connection pipe fitting shown in Figure 1 during from top view;
Fig. 3 is the A-A cut-away view of Fig. 2;
Fig. 4 is the partial enlarged view at B place among Fig. 3;
Fig. 5 is the structural representation of second kind of structure of the utility model.
Reference character is: body 1, joint socket 2, joint socket inlet 21, fusion-welded portion 3, hypotenuse 4.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 4 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is a kind of perspective view of the present utility model, and Fig. 2 is the topology view of connection pipe fitting shown in Figure 1 during from top view; Fig. 3 is the A-A cut-away view of Fig. 2; Fig. 4 is the partial enlarged view at B place among Fig. 3.
Present embodiment is a kind of spigot and socket type argon arc welding three-limb tube spare that is used to connect thin-wall stainless steel, comprises body 1 and joint socket 2; It is characterized in that: the ingress of described joint socket 2 is provided with fusion-welded portion 3, and the basic shape of the axial cross section of described fusion-welded portion 3 is approximately trapezoidal.Described trapezoidal be right-angled trapezium, it near the length a on one side of joint socket inlet 21 according to actual needs, can more than or equal to the Stainless Steel Tube wall thickness 1/3rd and smaller or equal to the Stainless Steel Tube wall thickness 2/3rds between select, length in the present embodiment is 0.2mm, is 1/3rd of Stainless Steel Tube wall thickness; The length b on described one side away from joint socket inlet 21 can select between 1/2nd and wall thickness smaller or equal to Stainless Steel Tube greater than the rust thickness of steel pipe, and the length in the present embodiment is 0.6mm, equals the wall thickness of Stainless Steel Tube; Described trapezoidal high h is 0.5mm.Described hypotenuse 4 is straight line and the outer surface that is positioned at joint socket inlet 21.
Present embodiment is provided with fusion-welded portion in the ingress of described joint socket, and the basic shape of the axial cross section of described fusion-welded portion is set to trapezoidal; Such structure is to draw traditional spigot and socket type pipeline connection to be connected both length with the welding type pipeline, and carries out organic combination, is a kind of argon arc welding formula pipe fitting Placement of innovation, so that the welding performance of better thin-wall stainless steel to be provided.The utility model is when implementing the argon arc welding welding, need not to replenish welding wire, only need earlier connecting tube to be inserted the joint socket in the utility model, weld then, described fusion-welded portion at high temperature melts, necessary welding wire when having replaced traditional argon arc welding welding is compared with traditional argon arc welding welding, has that welding process is simple, efficient is higher, the meticulous level and smooth advantage of weld seam.
Present embodiment is compared with traditional spigot and socket type welding, need not to use welding wire first, second can shorten the degree of depth of socket joint, generally can shorten 1/3rd to 1/2nd, thereby reduce materials consumption, reduces cost.
(embodiment 2)
Fig. 5 is the structural representation of second kind of structure of the utility model, has shown second kind of embodiment of the present utility model.
Present embodiment is substantially the same manner as Example 1, and difference is: the basic shape of described trapezoidal hypotenuse 4 is camber line shapes.
The foregoing description 1 and embodiment's 2 structure, not only be confined to threeway, also be applicable to pipe fittings such as thin-wall stainless steel pipe joint, threeway, four-way, straight-through or elbow, promptly can be used for isometrical thin-wall stainless steel connection pipe fitting simultaneously, also can be used for the thin-wall stainless steel connection pipe fitting of reducing.
Among the foregoing description 1 and the embodiment 2, no matter described trapezoidal hypotenuse is straight line, or camber line, or random curve, and its basic shape still is similar to trapezoidal, still belongs to the utility model scope required for protection.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And these belong to conspicuous variation or the change that connotation of the present utility model extends out and still belong to protection domain of the present utility model.
Claims (8)
1, a kind of spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel comprises body (1) and joint socket (2); It is characterized in that: the ingress of described joint socket (2) is provided with fusion-welded portion (3), and the basic shape of the axial cross section of described fusion-welded portion (3) is trapezoidal.
2, the spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel according to claim 1, it is characterized in that: the described trapezoidal right-angled trapezium that is, its length near one side of joint socket inlet (21) be more than or equal to the Stainless Steel Tube wall thickness 1/3rd and smaller or equal to 2/3rds of Stainless Steel Tube wall thickness, the length on described one side away from joint socket inlet (21) be greater than the rust thickness of steel pipe 1/2nd and smaller or equal to the wall thickness of Stainless Steel Tube.
3, the spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel according to claim 2 is characterized in that: the length on described trapezoidal one side near joint socket inlet (21) be more than or equal to the Stainless Steel Tube wall thickness 1/2nd and smaller or equal to 2/3rds of Stainless Steel Tube wall thickness.
4, the spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel according to claim 2, it is characterized in that: described trapezoidal height is more than or equal to 0.5mm.
5, the spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel according to claim 2 is characterized in that: described hypotenuse is positioned at the outer surface of joint socket inlet (21).
6, according to the described spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel of one of claim 2 to 4, it is characterized in that: described hypotenuse is straight line or camber line.
7, the spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel according to claim 1, it is characterized in that: described pipe fitting is isometrical or the connection pipe fitting of reducing.
8, the spigot and socket type argon arc welding connection pipe fitting that is used to connect thin-wall stainless steel according to claim 7 is characterized in that: described pipe fitting is pipe joint, threeway, four-way, straight-through or elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720191307XU CN201103755Y (en) | 2007-11-15 | 2007-11-15 | Adapting form argon arc welding connecting pipe fitting for connecting thin-wall stainless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720191307XU CN201103755Y (en) | 2007-11-15 | 2007-11-15 | Adapting form argon arc welding connecting pipe fitting for connecting thin-wall stainless steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201103755Y true CN201103755Y (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720191307XU Expired - Fee Related CN201103755Y (en) | 2007-11-15 | 2007-11-15 | Adapting form argon arc welding connecting pipe fitting for connecting thin-wall stainless steel tube |
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| Country | Link |
|---|---|
| CN (1) | CN201103755Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197012A (en) * | 2014-09-10 | 2014-12-10 | 苏州纽威阀门股份有限公司 | Steel forging valve and sealing connecting structure applicable to steel forging valve |
| CN106514031A (en) * | 2016-12-28 | 2017-03-22 | 中核核电运行管理有限公司 | Connecting structure of branch pipe and main pipe of pipeline of sea water system of nuclear power plant |
-
2007
- 2007-11-15 CN CNU200720191307XU patent/CN201103755Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197012A (en) * | 2014-09-10 | 2014-12-10 | 苏州纽威阀门股份有限公司 | Steel forging valve and sealing connecting structure applicable to steel forging valve |
| CN104197012B (en) * | 2014-09-10 | 2017-01-18 | 苏州纽威阀门股份有限公司 | Steel forging valve and sealing connecting structure applicable to steel forging valve |
| CN106514031A (en) * | 2016-12-28 | 2017-03-22 | 中核核电运行管理有限公司 | Connecting structure of branch pipe and main pipe of pipeline of sea water system of nuclear power plant |
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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: 20131225 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325604 WENZHOU, ZHEJIANG PROVINCE TO: 325600 WENZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131225 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 325604 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: 20080820 Termination date: 20151115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |