CN2304798Y - Right-angle steel plastic pipe joint - Google Patents
Right-angle steel plastic pipe joint Download PDFInfo
- Publication number
- CN2304798Y CN2304798Y CN 97224850 CN97224850U CN2304798Y CN 2304798 Y CN2304798 Y CN 2304798Y CN 97224850 CN97224850 CN 97224850 CN 97224850 U CN97224850 U CN 97224850U CN 2304798 Y CN2304798 Y CN 2304798Y
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- CN
- China
- Prior art keywords
- joint
- pipe
- steel
- plastic pipe
- tube
- 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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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model provides a right-angle steel plastic pipe joint for a pipeline system. The utility model is characterized in that the pipe joint is formed in the way that a plastic pipe and a right-angle elbow made of steel assembled into a whole in a stationary fit mode, and the jointing part of the stationary fit is provided with a sealing ring. An inner expanding pipe is connected in the inner diameter of the plastic pipe at the jointing part in a stationary fit way. The utility model can solve the problem that the transition jointing part of the joint of a screw connection pipe is broken by radial force. During a welded joint process, the utility model can decrease the number of welded junctions crater and reduce the welding difficulty.
Description
The utility model relates to the improvement design of pipe-line system with steel-mould transition tube joint, particularly provides a kind of being applicable to bury the pipe joint that combustion gas plastic pipe in ground uses.
Advantages such as plastic tube is corrosion-resistant with it, life-span length, easy construction have been widely used in the gas transmission and distribution system, because plastic tube is inflammable, easily be mechanically damaged, therefore, plastic tube is used for burying the ground part more, burying the ground plastic tube when being connected, just relating to steel-the mould transition connectivity problem between the pipe with the ground steel pipe.Steel-plastic pipe union generally is that straight shape steel tube forms with straight plastic pipe disjunctor in the known technology, easy construction during application, but when the threaded connection place is subjected to the footpath outward force, or because stratum inequality and sedimentation when producing radial force, make pipeline produce bending deflection, cause the joint to be damaged, cause gas leakage, so clearly forbid this type of steel-plastic pipe union in some regional job specfications.Employing welding steel-plastic pipe union is also arranged in the known technology, the above-mentioned defective of pipe joint though can avoiding of using is threaded, the weld bond of this kind joint is many, underground welding difficulty is bigger, particularly the welding difficulty of substantially horizontal is bigger, and welding quality is difficult to guarantee, thereby causes difficulty to construction.The inventor thinks: above-mentioned steel-plastic pipe union exists the reason of defective to be, steel-mould two pipe joints are between straight tube and connect.
The utility model purpose is to provide a kind of 90 ° of steel-mould the transition tube joint, to overcome the defective of above-mentioned known technology pipe joint.
Achieve the above object and adopt technological scheme to be: this 90 ° of steel-mould transition tube joint, it is characterized in that: this pipe joint is to be that one constitutes by plastic tube and 90 ° of steel bend pipe stationary fit loads, its stationary fit joint is provided with seal ring, and also stationary fit is fitted with interior expand tube in the internal diameter of connection part plastic tube
The pipe joint of making of technique scheme that combustion gas plastic pipe in ground uses that buries has following advantage: thus the steel end increases by 90 ° of angles and is connected the technological means that forms pipe joint with straight plastic pipe in the transition tube joint with original steel-mould because of it has adopted, so this pipe joint promptly is applicable in pipe applications and is threaded, also be applicable to welding, can change the force direction that is subjected to of original threaded connection place when being threaded, thereby avoid joint bending deflection, guarantee the safety reliability of threaded connection place; When adopting welding manner, can reduce weld bond quantity, reduce the welding difficulty, improve soldering reliability.
Fig. 1 is this 90 ° of steel-mould organigram of transition tube joint.
Fig. 2 is a transition tube joint application state schematic representation shown in Figure 1.
The embodiment who provides below in conjunction with accompanying drawing further describes.Referring to Fig. 1, this transition tube joint one end is 90 ° of steel bend pipes (1), the other end is a straight plastic pipe (2), both stationary fit loads are one, its fitting surface is provided with seal ring (3), have interior expand tube (4) in its straight plastic pipe (2) connecting end body, its load technology is: 1. earlier with plastic tube (2) heating, after the pressurization interior expand tube (4) is embedded within the plastic tube (2); 2. in 90 ° of steel bend pipes (1), add seal ring (3), and will insert in it with the plastic tube (2) of interior expand tube; 3. heating is pushed into interior expand tube (4) desired location and makes two ends stationary fit load be formed as one this 90 ° of steel-mould transition tube joint on hydraulic press.This pipe joint can be according to on-the-spot needs all size or model, is 90 ° of steel-mould transition tube joint of φ 32mm as nominal diameter, and steel is made end, and can to adopt external diameter be No. 20 cold drawing seamless pipes of φ 34mm; Moulding system end, can to adopt external diameter be the combustion gas buried polyethylene pipe of φ 32mm; It is φ 20mmA that interior expand tube adopts diameter
3F gas pipe material.Seal ring adopts commercially available combustion gas to get final product with the sealing material product.
These 90 ° of steel-mould transition tube joint user mode as shown in Figure 2, its straight plastic pipe (2) but ground combustion gas plastic tube (5), its steel end weldable steel tubulation road (6) are buried in end screw thread or welding.
Claims (1)
1, a kind of 90 ° of steel-mould transition tube joint, it is characterized in that: this pipe joint is to be that one constitutes by plastic tube and 90 ° of steel bend pipe stationary fit loads, its stationary fit joint is provided with seal ring, and also stationary fit is fitted with interior expand tube in the internal diameter of connection part plastic tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224850 CN2304798Y (en) | 1997-08-26 | 1997-08-26 | Right-angle steel plastic pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224850 CN2304798Y (en) | 1997-08-26 | 1997-08-26 | Right-angle steel plastic pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2304798Y true CN2304798Y (en) | 1999-01-20 |
Family
ID=33939061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224850 Expired - Fee Related CN2304798Y (en) | 1997-08-26 | 1997-08-26 | Right-angle steel plastic pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2304798Y (en) |
-
1997
- 1997-08-26 CN CN 97224850 patent/CN2304798Y/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 | ||
| 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 |