CN2185359Y - Spigot-and-socket jointed internal corrosion-proof steel pipe parts and joints thereof - Google Patents
Spigot-and-socket jointed internal corrosion-proof steel pipe parts and joints thereof Download PDFInfo
- Publication number
- CN2185359Y CN2185359Y CN 94205802 CN94205802U CN2185359Y CN 2185359 Y CN2185359 Y CN 2185359Y CN 94205802 CN94205802 CN 94205802 CN 94205802 U CN94205802 U CN 94205802U CN 2185359 Y CN2185359 Y CN 2185359Y
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- CN
- China
- Prior art keywords
- steel pipe
- shell portion
- socket
- socket end
- pipe fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model relates to a spigot-and-socket jointed internal corrosion-proof steel pipe parts and joints thereof. One end of the steel pipe parts of the utility model is a socket end, the other end is a spigot end, and the socket end of one steel pipe and the spigot end of another steel pipe are coated with sealants and then be mechanically pressed to form a joint. The pipe parts has convenient fabrication, the joints has rapid construction, low cost, good quality, no damage to inner coatings and no need of non-destructive inspection, and the strength of the joints can be compared with welded joints. The utility model without coatings can also be suitable for the connection of bare pipes, metal pipes with a certain plasticity and special metal pipes.
Description
The utility model relates to a kind of interior anti-corrosive steel tube spare and joint thereof of bayonet joint, its steel pipe fitting one end is that female end, the other end are socket end, middle for body and inner anticorrosioning coating is arranged, and its joint is that socket end coating sealer with a steel pipe fitting is after mechanical crimping is inserted into the female end of another steel pipe fitting that scribbles sealer.
The welded joint of anti-corrosive steel tube spare need carry out the processing of undercoating repaired mouth in existing, and thread connecting joint intensity is low, and pipe collar joint cost is higher.B. P. GB2078890 discloses a kind of internal coat pipeline machinery crimping connection method, and its deficiency is length, too high, the difficult popularization of construction cost of length that steel pipe fitting socket end inserts.In the steel pipe fitting insertion process, damage undercoating in addition easily.
The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part, makes simple and construction is fast, materials are few, reliable in quality, do not damage the interior anti-corrosive steel tube spare and the joint thereof of internally coated bayonet joint and provide a kind of.
The purpose of this utility model can reach by following measure:
The interior anti-corrosive steel tube spare and the joint thereof of bayonet joint of the present utility model, its steel pipe fitting one end are that female end, the other end are the socket end, the centre is for body and have inner anticorrosioning coating.It is characterized in that female end comprises the cone segments and the shell portion of the mouth that expands, the cone angle of its cone segments is that 5 °～12 °, length are (20～60) mm, the socket end comprises the cone segments and the shell portion of reducing, 8 °～15 ° of the cone angles of this cone segments, length are (20～60) mm, the shell portion external diameter of socket end is than steel pipe nominal outer diameter little (0.0～1.0) %Dw, and the shell portion internal diameter of female end is than socket end shell portion external diameter little (0.7～2.5) %Dw; The shell portion length of the shell portion of socket end and female end is (1.0～2.0) Dw, (wherein Dw is the steel pipe nominal outer diameter), and the corrosion-inhibiting coating that the steel pipe fitting internal surface has extends to the socket end cone segments outside (10～40) mm.
Above-mentioned steel pipe fitting, socket end leading edge have chamfering and internal groove with the undercoating quality that improves the ora terminalis place and the ability of corrosion-resistant fluid scouring.
The purpose of this utility model also can reach by following measure:
The joint of the interior anti-corrosive steel tube spare of bayonet joint of the present utility model, it is characterized in that comprising the female end of a steel pipe fitting, the socket end of another root steel pipe fitting and the sealer of the filling between female end and the socket end slit, sealing glue is epoxy resin sealant.
Describe the utility model in detail below in conjunction with accompanying drawing.
Fig. 1 represents the interior anti-corrosive steel tube spare sectional view of bayonet joint of the present utility model, wherein: 1---and the shell portion of female end; 2---the cone segments of female end; 3---body; 4---inner anticorrosioning coating; 5---the shell portion of socket end; 6---the cone segments of socket end.
Fig. 2 represents the interior anti-corrosive steel tube spare A of bayonet joint of the present utility model and the joint sectional view of B, wherein: 1---and the shell portion of female end; 2---the cone segments of female end; 3,3 '---the body of anti-corrosive steel tube spare A and B in being respectively; 4,4 '---be respectively the undercoating of steel pipe fitting A and B; 5 '---the shell portion of the socket end of steel pipe fitting B; 6 '---the cone segments of the socket end of steel pipe fitting B; 7---sealer (epoxy resin sealant).
Female end is that common steel tube is swollen and forms through punch, can adopt cold expanding method or heat expansion method, female end is that 5 °～12 ° cone segments 2 and shell portion 1 consists of by cone angle, the length of cone segments 2 is (20～60) mm, and the internal diameter of shell portion 1 is less than external diameter (0.7～2.5) %Dw of socket end shell portion 5.
The socket end is by the moulding of die undergauge, can adopt shrinkage method or heat-shrinkage method, comprise shell portion 5 and cone segments 6, wherein the external diameter of shell portion 5 is less than Steel tube standard external diameter (0.0～1.0) %Dw, the cone angle of cone segments is (8 °～15 °), and length is (20～60) Mm, the shell portion length of socket end and the shell portion length of socket section are (1.0～2.0) Dw. In order to ensure the ora terminalis coating quality of socket end 6, the socket end carries out rounding and internal groove processing before coating, and the coating of undercoating 4 should extend to the front end of cone segments 6 always and return and be coated onto outer surface (10～40) mm.
Scribble the joint (see figure 2) that the female end (comprising 1,2) that is sealed glue and socket end (comprise 5 ', 6 ') form through mechanical crimping; fluid sealant 7 is filled all slits of mating surface and the flechette-type space of socket end and female end formation; fluid sealant can adopt epoxy resin sealant; make joint produce bigger voltage endurance capability; joint metal and coating are effectively protected, and make coating and joint form continuous anti-corrosion function.
The insertion depth of socket end should guarantee cone segments 5 ' the end do not contact with female end cone segments 2, in order to avoid damage coating. Cone segments 6 ' should approach with cone segments 2 keeps certain interval, is (0.5～1.5) mm, fluid sealant 7 fills up the flechette-type space, the fluid sealant that is positioned at cone 6 ' termination circularizes, effectively cone 6 ' and cone 2 couple together, and prevent fluid sealant and coating in the corrosive medium erosion space.
Female end shell portion and socket end shell portion 5 ' the length of effective interference fit section be (1.0～2.0) Dw, it directly affects the bearing capacity of joint.
Embodiment
A kind of interior anti-corrosive steel tube spare that is used for φ 159 calibers of bayonet joint.With φ 159 former steel pipe one ends through the punch interruption-forming female end that expands, its female end shell portion internal diameter is 157.6mm, wall thickness is 5mm, external diameter is φ 168mm, length is 150mm, its cone angle of the cone segments of female end be 9 ° 30 ', cone segments is 55mm in axial length, the other end forms the socket end through the die reducing, and its socket end shell portion internal diameter is 149mm, and wall is 5mm, external diameter is 158.7mm, length is 231mm, the cone angle of socket end cone segments be 13 ° 25 ', the length on axle direction is 48.6mm, have rounding and internal groove and undercoating, return in the coating of socket end ora terminalis and to be coated onto outer surface, its length is 27.8mm, more than is prefabricated into the interior anti-corrosive steel tube spare of bayonet joint.
With above-mentioned two steel pipe fittings, the socket end of the female end of one root and another root applies sealer respectively after mechanical crimping forms joint, and above-mentioned sealer adopts epoxy resin sealant to solidify through behind the 24h.
In the utility model as do not add coating, also being connected applicable to naked pipe and the metal tube that certain plasticity is arranged, different kinds of metal tubes.
The present invention compared with prior art has following advantage:
1, the interior anticorrosive steel pipe fitting of bayonet joint of the present utility model has female end, socket end, respectively end comprises shell portion and cone segments and inner anticorrosioning coating, and it makes simple.
2, the joint of anticorrosive steel pipe fitting in the bayonet joint of the present utility model, that the female end of the socket end of a steel pipe fitting and another pipe fitting coating fluid sealant is formed joint by mechanical crimping, speed of application is fast, and cost is low, steady quality, do not destroy undercoating, joint and do not need Non-Destructive Testing, its strength of joint to match in excellence or beauty with welding point.
3, the interior anticorrosive steel pipe fitting joint of bayonet joint of the present utility model, the interior anticorrosive steel pipe fitting that is specially adapted to φ 325 following calibers connects.
Claims (3)
1, a kind of interior anti-corrosive steel tube spare that is used for bayonet joint, the one end is a female end, the other end is the socket end, the centre is a body, and inner anticorrosioning coating arranged, it is characterized in that female end comprises the cone segments and the shell portion of the mouth that expands, the cone angle of its cone segments is 5 °～12 °, its length is (20～60) mm, the socket end comprises the cone segments and the shell portion of reducing, the cone angle of this cone segments is 8 °～15 °, length is (20～60) mm, the shell portion external diameter of socket end is than steel pipe nominal outer diameter little (0.0～1.0) %Dw, the shell portion internal diameter of female end is than shell portion external diameter little (0.7～2.5) %Dw of socket end, the shell portion length of socket end and the shell portion length of female end are (1.0～2.0) Dw, and the corrosion-inhibiting coating that the steel pipe fitting internal surface has extends to the socket end cone segments outside (10～40) mm.
2, steel pipe fitting according to claim 1 is characterized in that socket end leading edge has chamfering and internal groove.
3, a kind of joint that is used for the interior anti-corrosive steel tube spare of bayonet joint is characterized in that comprising the sealer of filling between the socket end of female end, another root steel pipe fitting of a steel pipe fitting and female end and socket end slit, and sealing glue is epoxy resin sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205802 CN2185359Y (en) | 1994-03-29 | 1994-03-29 | Spigot-and-socket jointed internal corrosion-proof steel pipe parts and joints thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205802 CN2185359Y (en) | 1994-03-29 | 1994-03-29 | Spigot-and-socket jointed internal corrosion-proof steel pipe parts and joints thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2185359Y true CN2185359Y (en) | 1994-12-14 |
Family
ID=33824628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94205802 Expired - Fee Related CN2185359Y (en) | 1994-03-29 | 1994-03-29 | Spigot-and-socket jointed internal corrosion-proof steel pipe parts and joints thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2185359Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881356A (en) * | 2010-07-22 | 2010-11-10 | 湖南振辉管业有限公司 | Steel wire enhanced bell and spigot composite plastic tube and fabrication process thereof |
| CN105710157A (en) * | 2016-04-01 | 2016-06-29 | 天津市科建防腐保温工程有限公司 | Steel-plastic composite anti-corrosive steel pipe with bell-and-spigot joint function |
| CN108458170A (en) * | 2018-05-15 | 2018-08-28 | 马鞍山纽盟知识产权管理服务有限公司 | A kind of industry special anti-corrosion liquid-transport pipe-line |
| WO2019080895A1 (en) * | 2017-10-26 | 2019-05-02 | 周庆念 | Metal pipe connection structure having composite snap ring |
| WO2019080896A1 (en) * | 2017-10-26 | 2019-05-02 | 周庆念 | Metal pipe connecting structure having high-strength anti-corrosion coating |
-
1994
- 1994-03-29 CN CN 94205802 patent/CN2185359Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881356A (en) * | 2010-07-22 | 2010-11-10 | 湖南振辉管业有限公司 | Steel wire enhanced bell and spigot composite plastic tube and fabrication process thereof |
| CN101881356B (en) * | 2010-07-22 | 2012-09-12 | 湖南振辉管业有限公司 | Steel wire enhanced bell and spigot composite plastic tube and fabrication process thereof |
| CN105710157A (en) * | 2016-04-01 | 2016-06-29 | 天津市科建防腐保温工程有限公司 | Steel-plastic composite anti-corrosive steel pipe with bell-and-spigot joint function |
| WO2019080895A1 (en) * | 2017-10-26 | 2019-05-02 | 周庆念 | Metal pipe connection structure having composite snap ring |
| WO2019080896A1 (en) * | 2017-10-26 | 2019-05-02 | 周庆念 | Metal pipe connecting structure having high-strength anti-corrosion coating |
| CN109707935A (en) * | 2017-10-26 | 2019-05-03 | 周庆念 | Metallic conduit connection structure with high-strength anti-corrosion coating |
| CN108458170A (en) * | 2018-05-15 | 2018-08-28 | 马鞍山纽盟知识产权管理服务有限公司 | A kind of industry special anti-corrosion liquid-transport pipe-line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |