CN102537545A - Structure and method for connecting metal pipe fitting - Google Patents
Structure and method for connecting metal pipe fitting Download PDFInfo
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- CN102537545A CN102537545A CN2011104136702A CN201110413670A CN102537545A CN 102537545 A CN102537545 A CN 102537545A CN 2011104136702 A CN2011104136702 A CN 2011104136702A CN 201110413670 A CN201110413670 A CN 201110413670A CN 102537545 A CN102537545 A CN 102537545A
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Abstract
The invention relates to a structure and a method for connecting a stainless pipe fitting in a variety of modes. According to the structure and the method for connecting the metal pipe fitting, a fixed section, an annular pressed section and a welded section are arranged on each side of a pipe fitting main body; the diameter of an external pipe is the same as that of the fixed section; a sealing ring is arranged between the metal pipe fitting and the external pipe; and the length of the annular pressed section is not less than that of the sealing ring. The pipe fitting and the pipe are relatively fixed on the root part of the fixed section, then the sealing ring is fixed through annular pressing, and the sealing ring is isolated from air by welding. The invention provides the structure and the method for connecting the metal pipe fitting, wherein the structure has the advantages of good sealing effect, slow sealing ring aging, capability of bearing greater working pressure and long service life. According to the structure and the method disclosed by the invention, the technical problem that a pipeline connection part is easy to age and result in leakage of a system pipeline system, and the service life of the whole pipeline system is short is solved.
Description
Technical field
The present invention relates to a kind of connection of metal pipe element, relate in particular to structure and method thereof that a kind of multiple mode of employing of stainless steel pipe connects.
Background technique
The Placement of existing stainless steel pipeline, at home water supply pipe field are used the widest three kinds of clamp-press type, ring pressure type and the socket joint argon arc welding formulas that have.SOCKETWELDING formula product inside does not have seal ring, and hydrodynamic pressure is all born by solder joint, and is higher to welding technical ability and effect requirements, in case seepage takes place, maintenance is difficulty very; Clamp-press type is easy with the attended operation of ring pressure type, but relies on the seal ring sealing fully, and pressure-bearing is lower, and Safety performance is relatively poor.Substitute season, fluid temperature variations adds contact with air and makes seal ring be prone to wear out to cause pipe-line system generation seepage, directly cause the whole tubing life-span short partially.In existing open file, have: Chinese patent: " a kind of connecting means (CN102072370A) of socket joint ring pressure type metal pipe element "; Its step is following: the tubing that the caliber with socket joint ring pressure type metal pipe element is complementary is chosen in (1), cuts according to the length of setting; (2) otch of the tubing of well cutting is polished on milling tools, otch is polished to slyness till, remove its all burrs and burr; (3) will pass through the tubing that step (2) handled and import between the ring splenium and female part of socket joint ring pressure type metal pipe element, insert the bottom; (4) adopt ring hydraulic fluid press tool to pin the ring splenium of socket joint ring pressure type metal pipe element, pressure according to the rules compresses and gets final product.Chinese patent: " (CN2620809Y) "; It is characterized in that tubular body is made up of its internal diameter and the external diameter of waiting to take over material locking section that is complementary and the seal section that is located at locking section outer end, in seal section, be provided with the seal ring that the external diameter of its internal diameter and reception tubing is complementary.
Summary of the invention
The invention provides a kind of good sealing effect, seal ring is slowly aging, can bear bigger working pressure, linkage structure of the metal pipe element of long service life and attaching method thereof; Solve the pipeline junction that exists in the existing technology and be prone to wear out, caused the refreshing seepage of system pipeline systems approach, the technical problem that the whole tubing life-span is short.
Above-mentioned technical problem of the present invention solves through following technical proposals: a kind of metal pipe element linkage structure; It is characterized in that: comprise metal pipe element and the external tubing that joins with metal pipe element; Metal pipe element comprises main pipe body, is equipped with holding part, ring pressure section and welding section in the both sides of main pipe body, and an end of main body is connected with holding part in turn, ring is pressed section and welding section; The symmetrical configuration of main body both sides is arranged; The diameter of holding part is greater than the diameter of main body, and ring presses the diameter of section greater than holding part, and the diameter of external tubing is identical with the diameter of holding part; Between metal pipe element and external tubing, be provided with seal ring, ring presses the length of section to be not less than the length of seal ring.The main body both sides of metal pipe element are all as external tubing end; Therefore the structure in metal pipe element main body both sides is symmetrical; The external tubing end of metal pipe element is divided into three sections; Holding part is used for the relative position of pipe fitting and tubing is confirmed, makes tubing steadily to place, and does not rock all around about not understanding.Ring presses section to be used for the seal ring between metal pipe element and the tubing is compressed the formation sealing; Weld at welding section at last, avoid air directly to get into pipe fitting inside, make ring press the seal ring of section and air to completely cut off; Significantly improve the working life of seal ring, also shared the hydrodynamic pressure of ring pressure section simultaneously.Be divided into three sections through attachment portion, strengthened sealing effect, prolonged the working life of pipe-line system metal pipe element.
As preferably, described holding part presses section to join through the transitional surface inclined-plane with ring, and welding section one end presses section to join with ring, and the other end of welding section is processed with an inclined ramp.Press between the section at holding part and ring the transition inclined-plane is set, conveniently encircling capturing position when pressing, and can confirm the position of seal ring; When seal ring inserts in the metal pipe element; Prop up an end of seal ring through the transition inclined-plane, thereby seal ring is fixed, improve sealing effect.In chamfering of free end grinding of welding section, convenient welding, as more preferably, the angle of chamfering is 22.5 °.
As preferably, described ring presses the length of section identical with the length of seal ring, and the length of welding section is 1/5 ~ 1/3 of ring pressure segment length.Ring presses section and seal ring isometric, can when ring is pressed operation, press the inclined-plane to fix through ring at the two ends of seal ring, thereby improve the sealing effect after ring is pressed.
The connecting means of corresponding above-mentioned metal pipe element linkage structure, the first step is chosen the tubing that matches with the caliber of the holding part of metal pipe element, and length is as required cut; Second step, with the tubing front end deburring of well cutting, socket one seal ring on the tubing linkage section of front end then; The 3rd step, the tubing linkage section that is socketed with seal ring is stretched into the holding part of metal pipe element and the holding part root that main pipe body is joined, seal ring is connected on the transition inclined-plane of metal pipe element holding part; The 4th step was an end points with the transition inclined-plane of metal pipe element holding part, chose width and the identical ring pressing tongs of ring pressure segment length, and metal pipe element, seal ring and tubing are compressed; In the 5th step, water flowing after compressing uses argon arc welding equipment to weld at welding section under the situation that keeps hydraulic pressure, and tubing and metal pipe element are fixed.The connection of metal tube is successively through the location of holding part, the seal ring ring press fit that ring is pressed section; Weld again at last,, not only improved sealing effect pressing through ring between metal pipe element and the tubing and welding two kinds of fixing means; But also avoid seal ring to contact with air through welding; Delay the aging of seal ring, the working life of having improved seal ring, the working life of also just having improved pipe-line system.Simultaneously, be under the situation that keeps hydraulic pressure, to weld after ring presses card to press, so effective prevention heat transfer has avoided the molecule of seal ring to be destroyed to seal ring, has further prolonged the working life of seal ring.Metal tube tube wall and seal ring have born all hydrodynamic pressures when work; Solder joint only just can begin to share a part of pressure aging generation of seal ring after the seepage; Requirement to welding technique need be so not high as the socket weld jointing type; The double-deck fort of seal ring and argon arc welding makes pipe-line system can bear bigger working pressure, and make the twice that increases working life in addition more than.
As preferably, encircle one of them plane of inclination of pressing tongs ring pressure surface and the transition inclined-plane applying of holding part, the ring of the metal pipe element after ring is pressed is pressed section two opposing inclined faces of formation, and the two ends of seal ring are fixed in the plane of inclination of two annulars.Two plane of inclination of ring pressing tongs are " eight " font, and ring is pressed the Surface deformation of back metal pipe element, with seal ring being attached on the tubing tightly, improve sealing effect.
As preferably, the hydraulic pressure in the 5th step is 0.4-1.2MPa.Under the situation that keeps above-mentioned hydraulic pressure, weld the working life that to improve seal ring, delay the aging of seal ring.
Therefore, metal pipe element linkage structure of the present invention and attaching method thereof possesses following advantage: the present invention combines the advantage of ring press type pipe and socket joint argon arc welding formula pipe fitting, adopts the sealing of ring pressure seal ring; Again the direct argon arc welding of welding section and tubing is connected; When keeping hydraulic pressure, weld simultaneously, effectively stoped heat and be delivered on the seal ring, avoided the molecule of seal ring to be destroyed; And avoided seal ring directly with the contacting of air; Greatly slowed down the aging of seal ring, prolonged the life-span of seal ring, Stainless Steel Tube tube wall and seal ring have born all hydrodynamic pressures; Solder joint only just begins to share a part of pressure aging generation of seal ring after the seepage; It is so high not need the SOCKETWELDING formula to connect to the requirement of welding technique, and the double-deck fort of seal ring and argon arc welding makes the stainless steel pipeline system can bear bigger working pressure, and make be increased to its working life twice in addition more than.
Description of drawings
Fig. 1 is the decomposing schematic representation of metal pipe element linkage structure of the present invention.
Fig. 2 is the assembling schematic representation of the metal pipe element linkage structure of connecting means of the present invention.
Fig. 3 be connecting means of the present invention treat card pressure condition schematic representation.
Fig. 4 is the molded view of the card of connecting means of the present invention.
Fig. 5 is the jointing state schematic representation of connecting means of the present invention.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of invention.
Embodiment:
As shown in Figure 1, the metal pipe element linkage structure comprises metal pipe element 1 and the tubing 2 that links to each other with metal pipe element 1, metal pipe element 1 be the thin-wall stainless steel of DN25.Metal pipe element 1 comprises main pipe body 3, is furnished with stepped external tubing end at main pipe body 3 monosymmetric.External tubing end is interconnective successively to opening end by main body to be that holding part 4, ring are pressed section 5 and welding section 6.One section of holding part 4 is connected through transition inclined-plane 7 with main body 3, and the other end of holding part 4 presses section 5 to join through transition inclined-plane 7 and ring, and ring presses the diameter of section 5 greater than holding part 4.The diameter of tubing 2 is identical with the diameter of holding part 4, on tubing 2, is socketed with seal ring 8, and the end of seal ring 8 is connected to the root of holding part 4, just holding part 4 and main body 3 connecting parts.Ring presses the length of section 5 identical with the length of seal ring 8.One end of welding section 6 presses section 5 to link to each other with ring, and before not encircling pressure, the diameter of welding section presses the diameter of section identical with ring; Ring is pressed after the operation; The diameter of welding section is less than the diameter of ring pressure section, and the other end grinding of welding section 6 has 22.5 ° chamfering 9, and weld at 9 places in chamfering; The outer wall and the tubing 2 of metal pipe element 1 are welded together, avoided seal ring 8 directly to contact with air.
Shown in Fig. 2 to 4, the connecting means of above-mentioned metal pipe element linkage structure, the first step is chosen the tubing 2 that matches with the caliber of the holding part 4 of metal pipe element, and length is as required cut; Second step, with the tubing 2 front end deburrings of well cutting, socket one seal ring 8 on tubing 2 linkage sections of front end then; The 3rd step, the tubing linkage section that is socketed with seal ring 8 is stretched into the holding part of metal pipe element and the holding part root that main pipe body is joined, seal ring 8 is connected on the transition inclined-plane of metal pipe element holding part 4; The 4th step; Transition inclined-plane with metal pipe element 1 holding part is an end points, chooses width and presses segment length identical with ring, and just identical with the length of seal ring ring pressing tongs encircles pressure; After ring pressing tongs 10 adopts 3.0MPa pressure to connect; The pipe fitting Surface deformation, the ring of the metal pipe element after ring is pressed presses section to form two opposing inclined faces, and the two ends of seal ring are fixed in the plane of inclination of two annulars; In the 5th step, water flowing after compressing is to use argon arc welding equipment to weld at welding section under the situation of 0.4-1.2MPa keeping hydraulic pressure, and tubing and metal pipe element are fixed.Wall thickness according to tubing and pipe fitting during welding is reconciled welding current, guarantees that the solder joint surface temperature is 1450-1480 ℃.
The DN25 thin-wall stainless steel is connected with tubing, after the ring pressing tongs adopts 3.0MPa pressure to connect, the pipe fitting Surface deformation; With seal ring being attached on the tubing tightly, adopt argon arc welding to connect the pipe fitting welding ends again, adopt 0.6MPa, 1.6MPa and the 2.4PMa hydrostatic test respectively; All the ne-leakage phenomenon is brought up to 3MPa with hydraulic pressure, and the tubing weld joint begins infiltration; But pipe fitting and tubing joint, still ne-leakage phenomenon.
Claims (6)
1. metal pipe element linkage structure, it is characterized in that: comprise metal pipe element and the external tubing that joins with metal pipe element, metal pipe element comprises main pipe body; Be equipped with holding part, ring pressure section and welding section in the both sides of main pipe body; One end of main body is connected with holding part in turn, ring is pressed section and welding section, and the symmetrical configuration of main body both sides arranges that the diameter of holding part is greater than the diameter of main body; Ring presses the diameter of section greater than holding part; The diameter of external tubing is identical with the diameter of holding part, between metal pipe element and external tubing, is provided with seal ring, and ring presses the length of section to be not less than the length of seal ring.
2. metal pipe element linkage structure according to claim 1 is characterized in that: described holding part presses section to join through the transitional surface inclined-plane with ring, and welding section one end presses section to join with ring, and the other end of welding section is processed with an inclined ramp.
3. metal pipe element linkage structure according to claim 1 and 2 is characterized in that: described ring presses the length of section identical with the length of seal ring, and the length of welding section is pressed 1/5 ~ 1/3 of segment length for ring.
4. the connecting means of metal pipe element linkage structure according to claim 1 is characterized in that: the first step, choose the tubing that matches with the caliber of the holding part of metal pipe element, and length is as required cut; Second step, with the tubing front end deburring of well cutting, socket one seal ring on the tubing linkage section of front end then; The 3rd step, the tubing linkage section that is socketed with seal ring is stretched into the holding part of metal pipe element and the holding part root that main pipe body is joined, seal ring is connected on the transition inclined-plane of metal pipe element holding part; The 4th step was an end points with the transition inclined-plane of metal pipe element holding part, chose width and the identical ring pressing tongs of ring pressure segment length, and metal pipe element, seal ring and tubing are compressed; In the 5th step, water flowing after compressing uses argon arc welding equipment to weld at welding section under the situation that keeps hydraulic pressure, and tubing and metal pipe element are fixed.
5. the connecting means of metal pipe element linkage structure according to claim 4; It is characterized in that: fit in one of them plane of inclination of ring pressing tongs ring pressure surface and the transition inclined-plane of holding part; The ring of the metal pipe element after ring is pressed presses section to form two opposing inclined faces, and the two ends of seal ring are fixed in the plane of inclination of two annulars.
6. according to the connecting means of claim 4 or 5 described metal pipe element linkage structures, it is characterized in that: the hydraulic pressure in the 5th step is 0.4-1.2MPa, and the face of weld temperature is 1450-1480 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104136702A CN102537545A (en) | 2011-12-13 | 2011-12-13 | Structure and method for connecting metal pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104136702A CN102537545A (en) | 2011-12-13 | 2011-12-13 | Structure and method for connecting metal pipe fitting |
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| Publication Number | Publication Date |
|---|---|
| CN102537545A true CN102537545A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104136702A Pending CN102537545A (en) | 2011-12-13 | 2011-12-13 | Structure and method for connecting metal pipe fitting |
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| CN (1) | CN102537545A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197126A (en) * | 2014-08-29 | 2014-12-10 | 陈征 | Lip-seal clamping and pressing type pipe fitting connector and installation process thereof |
| CN107717250A (en) * | 2017-10-10 | 2018-02-23 | 固安县惠民塑料滤业有限公司 | A kind of connection method for Johnson's pipe being used in backwash filter |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482384A (en) * | 2003-07-27 | 2004-03-17 | 吕天军 | Process for leak stopping of high temperature pressurized pipeline |
| CN2620809Y (en) * | 2003-05-29 | 2004-06-16 | 蒋奇言 | Ring pressure pipeline connection piece |
| CN2830849Y (en) * | 2005-09-09 | 2006-10-25 | 廖仲力 | Insertion spot welded foreshaft tube element of thin wall stainless steel tube and copper tube |
| CN2886275Y (en) * | 2006-04-28 | 2007-04-04 | 梁世良 | Socket argon arc welding connection structure for thin-walled stainless steel pipe connector |
| CN101187435A (en) * | 2007-11-29 | 2008-05-28 | 东营力诺玻璃制品有限责任公司 | Perforation leakage repairing method for pressurized water pipeline |
| CN201416722Y (en) * | 2009-06-11 | 2010-03-03 | 上海天力实业有限公司 | Thin-walled stainless steel pipeline socket argon arc welding connecting structure |
| CN201475535U (en) * | 2009-08-25 | 2010-05-19 | 宁波市华涛不锈钢管材有限公司 | Thin-wall stainless steel pipeline socket soldering connecting structure |
| CN201764151U (en) * | 2010-08-27 | 2011-03-16 | 顾国栋 | Socket joint type stainless steel welding pipe with transitional side |
| CN201818927U (en) * | 2010-03-10 | 2011-05-04 | 余张法 | Chinese-standard thin-wall stainless steel pipe socket argon tungsten arc welding connecting structure |
| CN201982875U (en) * | 2011-02-12 | 2011-09-21 | 宝山钢铁股份有限公司 | Online pressure plugging device |
-
2011
- 2011-12-13 CN CN2011104136702A patent/CN102537545A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620809Y (en) * | 2003-05-29 | 2004-06-16 | 蒋奇言 | Ring pressure pipeline connection piece |
| CN1482384A (en) * | 2003-07-27 | 2004-03-17 | 吕天军 | Process for leak stopping of high temperature pressurized pipeline |
| CN2830849Y (en) * | 2005-09-09 | 2006-10-25 | 廖仲力 | Insertion spot welded foreshaft tube element of thin wall stainless steel tube and copper tube |
| CN2886275Y (en) * | 2006-04-28 | 2007-04-04 | 梁世良 | Socket argon arc welding connection structure for thin-walled stainless steel pipe connector |
| CN101187435A (en) * | 2007-11-29 | 2008-05-28 | 东营力诺玻璃制品有限责任公司 | Perforation leakage repairing method for pressurized water pipeline |
| CN201416722Y (en) * | 2009-06-11 | 2010-03-03 | 上海天力实业有限公司 | Thin-walled stainless steel pipeline socket argon arc welding connecting structure |
| CN201475535U (en) * | 2009-08-25 | 2010-05-19 | 宁波市华涛不锈钢管材有限公司 | Thin-wall stainless steel pipeline socket soldering connecting structure |
| CN201818927U (en) * | 2010-03-10 | 2011-05-04 | 余张法 | Chinese-standard thin-wall stainless steel pipe socket argon tungsten arc welding connecting structure |
| CN201764151U (en) * | 2010-08-27 | 2011-03-16 | 顾国栋 | Socket joint type stainless steel welding pipe with transitional side |
| CN201982875U (en) * | 2011-02-12 | 2011-09-21 | 宝山钢铁股份有限公司 | Online pressure plugging device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197126A (en) * | 2014-08-29 | 2014-12-10 | 陈征 | Lip-seal clamping and pressing type pipe fitting connector and installation process thereof |
| CN107717250A (en) * | 2017-10-10 | 2018-02-23 | 固安县惠民塑料滤业有限公司 | A kind of connection method for Johnson's pipe being used in backwash filter |
| CN107717250B (en) * | 2017-10-10 | 2020-02-14 | 固安县惠民塑料滤业有限公司 | Connecting method for Johnson pipe in backwashing filter |
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Application publication date: 20120704 |