CN2830849Y - Insertion spot welded foreshaft tube element of thin wall stainless steel tube and copper tube - Google Patents
Insertion spot welded foreshaft tube element of thin wall stainless steel tube and copper tube Download PDFInfo
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- CN2830849Y CN2830849Y CNU2005200354106U CN200520035410U CN2830849Y CN 2830849 Y CN2830849 Y CN 2830849Y CN U2005200354106 U CNU2005200354106 U CN U2005200354106U CN 200520035410 U CN200520035410 U CN 200520035410U CN 2830849 Y CN2830849 Y CN 2830849Y
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Abstract
The utility model relates to an insertion spot welded opening sealing tube piece of a thin wall stainless steel tube and a copper tube. An inclined opening is arranged at one end of the utility model, which is connected with the thin tube. The thin wall stainless steel tube and the copper tube are respectively inserted from each of ports of a connector and in tight fit with each of the ports. A sealing ring and a groove is arranged in a matching section, and a convex part is formed on the surface of the matching section. An opening between the port and the thin tube is sealed by flash welding. Therefore, the required pulling and disengaging force is guarantee, and the welded point of a pipeline is convenient to repair when the pipeline is refitted, and the welded point is cut off to draw the tubes. The tight fit which is used can satisfy the non-eccentric compression of rubber. Since the distances from the convex part to the ports are selected according to the tube diameter of the thin tube, the sealing ring can not be damaged when the spot welding is carried out to the thin tube, and the convex part is matched with the inclined opening which is arranged on the thin tube; the arrangement is equally favorable for the tight fit insertion of the thin tube. The triangular surface of the groove is formed into a blocking wall which is stable. Therefore, the effect that the sealing ring which is not lacerated and pushed out is conveniently pushed into the groove is realized when the thin tube is inserted in the utility model. Moreover, the compressed amount of the rubber still keeps good sealability. The utility model solves the problems that the existing clamping and pressing tube piece is easy to damage when sealed, and an inserting tube piece is only applicable to tubes of small diameters. Through tests, the pressure of water which is sealed by the stainless steel tube piece reaches 10 Mpa, and the pressure of water which is sealed by the copper tube piece reaches 5.
Description
(1) technical field: the socket spot-welding collar pipe fitting of book wall Stainless Steel Tube and copper pipe. belong to engineering element pipe fitting (F16L).Applicable scope is that book wall Stainless Steel Tube latus rectum is 15～200mm, and the copper pipe latus rectum is the pipe fitting of 15～50mm pipeline.
(2) background technique: existing disclosed clamp-press type pipe with what book wall Stainless Steel Tube, its structure is seen Figure 10, establish connecting body 1 in the pipe fitting, there is one section reaming section 1.1 on each port side, connected two book pipes 3 and 4 and inserted two reaming sections respectively, ring-type semi-circular recesses 1.2e and O-ring seals 2 are established in the port, and the surface forms annular convex 1.3b.The inboard connecting body of protuberance is surperficial at the scene during installation presses with card pressing mold tool and Hydraulic power tools card, becomes six prismatics 1.6, is one with connecting body, book pipe and the compressive strain of seal ring card, forms the compression type sealing thus.There are the following problems for this kind clamp-press type pipe: 1. the normal appearance in hydraulic tongs card pressure back is eccentric, makes these place's tubing wrinkle and breaks, and makes the compression of O type circle uneven; And because of being compression seal, and O type circle can not synchronous, all influences sealing reliability for this reason.2. the book tube wall after pressing with the hydraulic tongs card, after card was pressed failure when installing, the joint can't be repaired.3. whether successful to installation quality, the sealing effect of product, be subjected to the restriction of following factor: the wearing and tearing of card pressing mold tool and Hydraulic power tools, frequent because of using, tool wear is difficult to reach seal request after then blocking pressure; In addition the same day on-the-spot installer's mood quality, whether can block pressure on request, also be the key link that guarantees installation quality and sealability.Though this kind pipe fitting is through for many years modification for this reason, the situation of leaking also frequently takes place.Therefore, some countries of this clamp-press type pipe do not allow to have used for many years, and the also limiter tube latus rectum that has could use below 25mm.
Chinese patent discloses ' book wall stainless steel plug-in type pipe fitting ' (ZL200420033074.7), the feature that this patent proposes only is fit to light wall pipe caliber D below 25mm, for example: 1. this patent has proposed: adopt ' spot welding 1.4 is fixing ' (seeing claim 3) between connecting body port and book tube-surface, and mention ' adopt and locate in the circumferential spot welding in 1.4 places (2～3) ' (seeing bulletin Instructions Page 2 the 22nd row) in an embodiment.This design if being used in D is that the above book pipe of 25mm then can't satisfy the requirement of anti-tripping power, can not realize stationary positioned, influences sealability for this reason.2. this patent has proposed: the distance X of connecting body protuberance and port is 2～8mm, and this scope also only is fit to D below 25mm.3. book pipe socket end groove opening not often scratches outstanding rubber seal during insertion, influences sealability.
(3) summary of the invention:
The book wall Stainless Steel Tube that the utility model proposes and the socket spot-welding collar pipe fitting of copper pipe, its purpose solve the above-mentioned problem that influences book pipe pipe fitting sealing that existing clamp-press type pipe and Chinese patent ' book wall stainless steel plug-in type pipe fitting ' (ZL200420033074.7) exist exactly.Its technological scheme is as follows:
The socket spot-welding collar pipe fitting of book wall Stainless Steel Tube and copper pipe, has connecting body 1, there is one section reaming section 1.1 its each port one .5 inboard, connected the book pipe and inserted the reaming section from each port respectively, in the overlay segment L of book pipe and reaming section, connecting body endoporus open loop shape groove 1.2a, and establish the seal ring 2 that matches, form annular convex 1.3a at the connecting body tube-surface thus, it is characterized in that
A. between connecting body port and book tube-surface by fixing along the uniform multiple spot welding soldering point of port complete cycle 1.4.Can adopt impulse welding to tap into capable complete cycle spot welding, below summary is ' flash welding fore shaft '.
B. connected book pipe inserts the port groove opening.
C. the value of the distance X of connecting body protuberance 1.3a and port one .5 such as following table 1 (millimeter) table 1
| The latus rectum D that is connected the book pipe | The overlay segment distance L of book pipe and connecting body | The connecting body protuberance is to the distance X of port |
| Below 25 | (0.8～1)D | (1/6～1/2)L |
| 25～50 | (0.7～1)D | |
| 50～100 | (0.6～1)D | |
| 100～150 | (0.4～1)D | |
| More than 150 | (0.3～1)D |
Above-mentioned spot welding can adopt per 1～3 centimetre length to join a solder joint, and each solder joint area is 1～4 square millimeter.
The groove sectional shape of above-mentioned placement seal ring can adopt following four kinds: the bottom land angle is that the right-angled triangle of fillet or half heart-shaped or half elliptic or two bottom land angles are half rectangle of fillet.To the bottom land angle is the right-angled triangle of fillet, and its horizontal angle beta is elected 30 °～40 ° as for good.Above-mentioned seal ring 2 sectional shapes select O shape for best, also optional triangle or rectangle.
Above-mentioned seal ring section S
0Be chosen as 0.7～0.95 with the ratio η of groove section S; Seal ring exceeds the height H of groove surface
0Be chosen as 0.15～0.3 with the ratio K of seal ring height overall H.This is cooperated parameter, and above-mentioned book pipe insertion end groove opening angle [alpha] is chosen as 30 °-60 ° for good.
Above-mentionedly in book pipe and connecting body, in the intersegmental overlay segment L of reaming, adopt by the drive fit in the NBS margin of error between the two.Above-mentioned metallic interconnect materials adopts stainless steel or copper product to make.Above-mentioned seal ring adopts rubber material to make, as ternary L third rubber, chlorinated scoline etc.
The utility model beneficial effect:
1. the utility model guarantees fastening and sealing after the book pipe inserts connecting body from the design of the structure of pipe fitting and sealing.The pipe fitting sealing reliability is no longer installed the restriction of situation thus.And avoided the defective of existing clamp-press type.Through evidence, the plug-in type sealing of this patent design is feasible.Test is at water temperature 20-100 ℃, and the rubber shore hardness is in 65-75, and the dynamic curve of measured compressed amount and sealing hydraulic pressure relation draws the plug-in type sealing that this patent adopts, and tests high sealing hydraulic pressure stainless steel pipe and reaches 10Mpa, and copper pipe fitting reaches 5Mpa.
2. distributing rationally of spot size and quantity, power is taken off in dialling of both having guaranteed that pipe fitting can bear, and prevents the detrimental effect that too much solder joint brings again.This patent pipe fitting socket joint port 1.5 adopts ' pulse flash welding ', and flash welding neither influences the austenitic metal structure, can finish the welding fore shaft fast again.Any flash welding of this patent socket joint port is put 1.4 place's materials carry out the crystal orientation analysis, the crystal orientation corrosion never occurred.And adopted ' spot-welding collar ' by what, when the repacking pipeline, can slice off solder joint, extracted the book pipe out, can repair easily.
3. the book pipe inserts the port groove opening, and when helping the what intubate, outstanding seal ring is not scratched and effectively compresses in the groove in groove inclined-plane thrust lower seal.Inclined-plane thrust test under the situation that O RunddichtringO and book pipe insertion port groove α to the ethylene propylene diene rubber making are 30 °～60 ° draws rubber covering and does not damage, and the O-ring seals of outstanding groove surface 25% height is advanced in the groove.
4. protuberance moves in port, and promptly X increases, and presses the design of book pipe latus rectum and determine, does not damage seal ring when seal ring is not pushed out with spot welding during in order to the assurance intubate.
Seal ring was not pushed out when 5. four kinds of sectional shapes of groove design selection all helped the what intubate.And four kinds of cross sections all can time processing form.Employing bottom land angle, cross section is that the right-angled triangle of fillet has its radially vertical side of following advantage: a. to form the resistance of seal ring wall, and seal ring can not released outside the groove by intubate.B, from opening up the benefit geometry principle, total peripheral appearance with multiple geometrical shape in, what area minimum that vertical side surrounds was arranged is right-angled triangle, so it has maximum sealing surface (groove cross section minimum, plane sealing face maximum), good airproof performance thus.C. seal ring is the most stable in triangular groove.
6. the selection of seal ring and groove fit parameter, seal ring is not pushed out outside the groove when both guaranteeing intubate, and guaranteeing to insert back rubber again has 15%～30% decrement, in order to guarantee sealability.
7. in overlay segment L, adopt suitable drive fit between fittings body and book pipe, prevent that both gaps are big, intubate off-centre can satisfy outstanding rubber sealing ring non-eccentricity compression, helps the reliability of what sealing.
(4) description of drawings:
Fig. 1 embodiment 1 structural drawing is isometrical straight joint by connecting two book pipes
Fig. 2 embodiment 2 diagrams are the straight joint of reducing by connecting two book pipes
Fig. 3 embodiment 3 diagrams are 45 ° of isometrical elbows by connecting two book pipes
Fig. 4 embodiment 4 diagrams are 90 ° of isometrical elbows by connecting two book pipes
Fig. 5 embodiment 5 diagrams are isometrical threeway by connecting two book pipes
One of Fig. 6 groove sectional shape (Fig. 1 partial enlarged drawing I)
Two of Fig. 7 groove sectional shape
Three of Fig. 8 groove sectional shape
Four of Fig. 9 groove sectional shape
Figure 10 background technique " clamp-press type pipe " structural drawing
(5) embodiment:
Embodiment 1: see Fig. 1, this pipe fitting for what by the company two book pipes be isometrical straight joint.
Pipe fitting is provided with the direct-connected junctor of making of stainless steel material 1, its two port one .5 inboards are one section reaming section 1.1, by connecting two book pipes is that Stainless Steel Tube 3 and 4 inwardly inserts the connecting body endoporus from direct-connected junctor two-port respectively, and extending reaming section 1.1 tail ends, the overlay segment of book pipe and connecting body is L.In the L section, an annular recess 1.2a is respectively opened at connecting body endoporus two ends, puts O type rubber seal 2 in it, respectively forms an annular convex 1.3a at respective slot place, two ends, connecting body surface thus.
Connecting body two-port 1.5 connects book pipe 3 with quilt respectively and 4 usefulness ' flash welding fore shaft ' are connected and fixed.With the book external diameter of pipe is that 159mm is an example: every flash welding point 1.4 of 2～3 centimeters configurations, join 16 altogether, the area of each flash welding point is 4 square millimeters.This can satisfy the power of dialling of drawing of the required about 3200kg of fore shaft.
See Fig. 1, connected two book pipes 3 and 4 and insert port groove opening 3.1 and 4.1 respectively that the α angle is 45 °.
See Fig. 1, D is 159mm when book pipe latus rectum, sees Table 1, and the annular convex 1.3a on the connecting body can be taken as 20～40mm apart from the distance X of port one .5, and this moment, overlay segment L was chosen as 80～120mm.
See Fig. 1, Fig. 6, the groove sectional shape is the right-angled triangle 1.2a of fillet for the bottom land angle, and its horizontal angle beta is elected 30 °～40 ° as.See Fig. 7, the groove sectional shape also is chosen as half heart-shaped 1.2b.See Fig. 8, the groove sectional shape is chosen as half elliptic 1.2c.See Fig. 9, the groove sectional shape also is chosen as the half rectangle 1.2d that two bottom land angles are fillet.Among Fig. 6～Fig. 9, K is to being book pipe direction of insertion.
Above-mentioned seal ring section S
0Being taken as with the ratio η of groove section S is 0.7～0.95; Seal ring exceeds the height H of groove surface
0Be taken as 0.15～0.3 with the ratio K of the high H of seal ring.Optimal value is taken as 0.15～0.2.
The overlay segment of book pipe and connecting body is in the L, adopts drive fit between the two.
Installation process: with external diameter of pipe Φ is that the bassoon of 159mm is the example explanation.A. before the intubate O-ring seals is placed in the connecting body groove, sealing rubber ring is height H outside groove
0Be below 25% of height overall.B. check and adjust the circularity of light wall pipe to be inserted.C. to the intubate groove opening.D. intubate water spray (in order to reduce friction) back is inserted in the connecting body.E. with 8 tons of traction hydraulic tongses, just effortless with in book pipe 3 or the 4 insertion connecting bodys 1.F. finish ' flash welding fore shaft '.
Embodiment 2: see Fig. 2, this pipe fitting for what by the company two book pipes be the straight joint of reducing.
Being connected book pipe 3 external diameter Φ is 219mm, and book pipe 4 external diameter Φ are 159mm, and the two-port of the direct-connected junctor 1a of reducing is large and small endoporus, matches with book pipe 3 and 4 respectively.Being connected two A'Book pipes 3 and 4 inserts in two reaming sections 1.1 from two port one .5 drive fits of the direct-connected junctor 1a of reducing respectively.After embodiment's 1 described installation process insertion, finish ' flash welding fore shaft ' and adopt 16 flash welding points, each 4 square millimeters, do not transferred to satisfy intubate.All the other structure shapes are identical with embodiment 1 with parameter.
Embodiment 3: see Fig. 3, this pipe fitting for what by the company two book pipes be 45 ° of isometrical elbows.
Being connected two A'Book pipes 3 and 4 inserts in two reaming sections 1.1 from two port one .5 drive fits of 45 ° of elbow connecting body 1b respectively.For example: book pipe 3 and 4 external diameter of pipe Φ are 219mm, and its flash welding point is 16, each 4 square millimeters.All the other structure shapes are identical with embodiment 1 with parameter.
Embodiment 4: see Fig. 4, this pipe fitting for what by the company two book pipes be 90 ° of isometrical elbows.
Connecting body is 90 ° of elbow connecting body 1c, all the other and embodiment illustrated in fig. 33 identical.
Embodiment 5: see Fig. 5, this pipe fitting for what by the company 3 A'Book pipes be isometrical threeway.
Being connected three A'Book pipe 3 and 4 and 5 inserts in three reaming sections 1.1 from three port one .5 drive fits of threeway connecting body 1d respectively.All the other structure shapes are identical with embodiment 1 with parameter.
Embodiment 6: see Fig. 1, the direct-connected junctor 1 of this pipe fitting adopts copper product to make, and is connected book pipe 3 and 4 and is copper pipe.All the other structure characteristics are identical with embodiment 1.
Claims (8)
1. the socket spot-welding collar pipe fitting of book wall Stainless Steel Tube and copper pipe, has connecting body (1), there is one section reaming section (1.1) its each port (1.5) inboard, connected the book pipe and inserted the reaming section from each port respectively, in the overlay segment L of book pipe and reaming section, and connecting body endoporus open loop shape groove (1.2a～1.2d), and establish the seal ring (2) that matches, form annular convex (1.3a) at the connecting body tube-surface thus, it is characterized in that
A. between connecting body port and book tube-surface by fixing along the uniform multiple-spot welding contact (1.4) of port complete cycle;
B. connected book pipe inserts the port groove opening;
C. the value such as following table 1 (millimeter) table 1 of the distance X of connecting body protuberance (1.3a) and port (1.5)
The latus rectum D that is connected the book pipe The overlay segment distance L of book pipe and connecting body The connecting body protuberance is to the distance X of port
Below 25 (O.8～1)D (1/6～1/2)L
25～50 (0.7～1)D
50～100 (O.6～1)D
100～150 (O.4～1)D
More than 150 (O.3～1)D
2. by the described pipe fitting of claim 1, it is characterized in that number of welds adopts per 1～3 centimetre length to join a solder joint, each solder joint area is 1～4 square millimeter.
3. by the described pipe fitting of claim 1, it is characterized in that the groove sectional shape can adopt following shape: the bottom land angle is that the right-angled triangle of fillet or half heart-shaped or half elliptic or two bottom land angles are half rectangle of fillet; The sectional shape of seal ring is O shape, triangle or rectangle.
4. by the described pipe fitting of claim 1, it is characterized in that the seal ring section S
0With the ratio η of groove section S be 0.7～0.95; Seal ring exceeds the height H of groove surface
0With the ratio K of seal ring height overall H for O.15～0.3.
5. by the described pipe fitting of claim 4, it is characterized in that it is 30 °-60 ° that the book pipe inserts port groove opening angle [alpha].
6. by the described pipe fitting of claim 3, it is characterized in that the bottom land angle is the right-angled triangle of fillet, its horizontal angle beta is elected 30 °～40 ° as.
7. by the described pipe fitting of claim 1, it is characterized in that in the intersegmental overlay segment L of book pipe and connecting body reaming, adopt by the drive fit in the NBS margin of error between the two.
8. by the described pipe fitting of claim 1, it is characterized in that metallic interconnect materials adopts stainless steel or copper product to make; Seal ring adopts rubber material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200354106U CN2830849Y (en) | 2005-09-09 | 2005-09-09 | Insertion spot welded foreshaft tube element of thin wall stainless steel tube and copper tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200354106U CN2830849Y (en) | 2005-09-09 | 2005-09-09 | Insertion spot welded foreshaft tube element of thin wall stainless steel tube and copper tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2830849Y true CN2830849Y (en) | 2006-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200354106U Expired - Lifetime CN2830849Y (en) | 2005-09-09 | 2005-09-09 | Insertion spot welded foreshaft tube element of thin wall stainless steel tube and copper tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2830849Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392311C (en) * | 2005-09-09 | 2008-06-04 | 廖仲力 | Socket spot-welding collar pipe fitting for thin wall stainless steel pipe and copper pipe |
| CN102537545A (en) * | 2011-12-13 | 2012-07-04 | 浙江天兴管业有限公司 | Structure and method for connecting metal pipe fitting |
| CN103047504A (en) * | 2012-12-17 | 2013-04-17 | 冀州市中意复合材料有限公司 | Sealing structure for bell and spigot joint of glass steel tube and repairing method |
| WO2016029759A1 (en) * | 2014-08-29 | 2016-03-03 | 深圳市雅昌管业股份有限公司 | Lip seal welded-type pipe fitting interface and installation method therefor |
-
2005
- 2005-09-09 CN CNU2005200354106U patent/CN2830849Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392311C (en) * | 2005-09-09 | 2008-06-04 | 廖仲力 | Socket spot-welding collar pipe fitting for thin wall stainless steel pipe and copper pipe |
| CN102537545A (en) * | 2011-12-13 | 2012-07-04 | 浙江天兴管业有限公司 | Structure and method for connecting metal pipe fitting |
| CN103047504A (en) * | 2012-12-17 | 2013-04-17 | 冀州市中意复合材料有限公司 | Sealing structure for bell and spigot joint of glass steel tube and repairing method |
| WO2016029759A1 (en) * | 2014-08-29 | 2016-03-03 | 深圳市雅昌管业股份有限公司 | Lip seal welded-type pipe fitting interface and installation method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080604 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |