CN2588167Y - Flange join type steel-plastics combined joint for pressure pipe - Google Patents
Flange join type steel-plastics combined joint for pressure pipe Download PDFInfo
- Publication number
- CN2588167Y CN2588167Y CN 02247915 CN02247915U CN2588167Y CN 2588167 Y CN2588167 Y CN 2588167Y CN 02247915 CN02247915 CN 02247915 CN 02247915 U CN02247915 U CN 02247915U CN 2588167 Y CN2588167 Y CN 2588167Y
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- plastic composite
- steel
- pipe
- differential
- pipe fitting
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- Expired - Fee Related
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- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The utility model relates to a special pipe member for connecting steel-plastic composite pressure pipes. The utility model comprises a left press flange, a right pressing flange, a bush, a left steel-plastic composite pipe and a right steel-plastic composite pipe. Sealing rings are fixed on the outer cylindrical surfaces of both ends of the bush, and both ends of the bush are simultaneously inserted in expanded end ports of the left and the right steel-plastic composite pipes. The left and the right pressing flanges are arranged outside end ports of the left and the right steel-plastic composite pipes. Inner holes of the left and the right pressing flanges are corresponding to the end ports of the left and the right steel-plastic composite pipes in shape. Through holes are uniformly distributed on the pressing edges of the left and the right pressing flanges, and bolts and nuts which are used for fixing the flanges are penetrated in the through holes. The utility model has the advantages of no diameter reducing, strong pulling resistance and reliable seal.
Description
(1), technical field
The utility model relates to a kind of special pipe fitting that connects steel-plastic composite pressure pipe.
(2), background technique
The steel-plastic composite pipe industry is a kind of new industry that has just grown up recent years, because characteristics such as its bearing capacity height, price are low, good corrosion resistance, linear expansion coeffcient are little, and had an optimistic view of by numerous manufacturing firms and user.Allow of no optimist from existing market situation and field feedback but the pipe fitting of steel-plastic composite pressure pipe is supporting, aspect pipe fitting supporting, exist very big problem.
The special pipe fitting of the steel-plastic composite pressure pipe of Chu Xianing mainly contains following several in the market: (1) electrothermal smelting tube; (2) clamp-press type pipe; (3) tube head injection moulding flange-type pipe fitting etc.These pipe fittings in use all exist various problems.Therefore, the application and the popularization of steel-plastic composite pressure pipe have been restricted.
The problem that electricity hot melten type pipe fitting exists is: (a) the electrothermal smelting tube main body of selling in the market all is made of plastics basically, because the intensity of plastics is very low, so cause the bearing capacity of this kind pipe fitting lower; (b) because this kind pipe fitting when connecting pipeline, is to mould the plastics of managing outer wall and make them be fused to one by heating pipe fitting inwall and steel, finally reach sealing effect.The fusing situation on the mating face of pipe fitting and pipe is sightless in carrying out the molten process of electric heating, can only control the fusing situation on mating face by the excessive mole of the technology on the pipe fitting, therefore be difficult to guarantee that each joint can both merge well, also just be difficult to the quality of connection of pilot line.(c) this kind pipe fitting is that perfect rigidity connects, therefore flexible very responsive to the pipeline that causes owing to variation of temperature, and when difference variation greatly the time, the destruction that is easy to cause the pipeline middle joint.
Clamp-press type pipe only is used for aluminium-plastic composite pipe at present, is difficult to adopt on steel-plastic composite pipe.If use it on the steel-plastic composite pipe, also can only be used for the small-bore steel-plastic composite pipe of φ below 63.The problem of its existence is: (a) because this kind pipe fitting is the interior sealing means that adopts, its passive neck bush is the inboard that is placed on pipe, so there is the tube reducing phenomenon in this kind pipe fitting in the joint of pipeline, it is not a kind of pipe fitting of isometrical connection.(b) because this kind pipe fitting is stainless steel sleeve to be fastened on outer the moulding of pipe by special tool, this kind pipe fitting is used for aluminium-plastic composite pipe, because the strength ratio of aluminum pipe is lower, when pressing, card can guarantee sealing, so can there not be sealing problem incessantly by the aluminum pipe distortion.If mould pipe,, thereby may cause the poorly sealed of joint and leak because the intensity of steel pipe when utilizing special tool to construct, then is difficult to make pipe deformation much larger than the intensity of aluminum pipe but use it for steel.
Tube head injection moulding flange-type pipe fitting, its catenation principle is at first annotating the flange of plastics by injection moulding in the termination that steel is moulded pipe, and the steel pipe that is connected then equally carries out the connection of pipeline.The problem of its existence is: (a) since the flange of pipe termination annotate in the pipe termination by injection molding way, so if need pipe is being cut off when constructing at the scene, the pipe termination injection moulding orchid that then can't cut off at the construction field (site); (b) because this kind pipe fitting also is rigidly connected fully, thus relatively more responsive to variation of temperature, the destruction of under the bigger situation of the temperature difference, causing pipeline easily, the generation that causes the accident.
(3), summary of the invention
In order to overcome the shortcoming of prior art, small-bore steel-plastic composite pipe special pipe fitting during the utility model provides a kind of withstand voltage height, good sealing effect, cost is low, joint is safe and reliable.
The technical scheme in the invention for solving the technical problem is: it comprises left differential, right differential, lining and left and right steel-plastic composite pipe, be fixed with seal ring on the external cylindrical surface at lining two ends, it is inserted in the port of left and right steel-plastic composite pipe of reaming simultaneously, left and right steel-plastic composite pipe port is outward left and right differential, the endoporus of left and right differential is corresponding with left and right steel-plastic composite pipe port shape, uniform through hole is arranged in its flanging, be installed with the bolt and nut that is used for fixing differential between through hole.
In order to make pipe fitting realize isometrical connection in the joint, the internal diameter of lining is identical with the internal diameter of the left and right steel-plastic composite pipe that will connect.
In order to increase anti-pull-out force of the present utility model, the hangnail that increases frictional force is arranged on the inner hole wall of left and right differential.
The effect that the utility model is useful is: (1) is because the enlarging of connected left and right steel-plastic composite pipe, and the internal diameter of lining is identical with the internal diameter of steel-plastic composite pipe, so there is not the problem of tube reducing in this kind pipe fitting in the joint, be a kind of pipe fitting of isometrical connection, has guaranteed the effective drift diameter of pipe; (2) because the hangnail that increases frictional force is arranged on the inner hole wall of differential, increased anti-pull-out force of the present utility model greatly; (3) because lining adopts is the sealing means that the conical surface and external cylindrical surface combine, so guaranteed sealing reliability of the present utility model; (4) because each parts of the present utility model all are removable, so this kind pipe fitting can recycling; (5), simple in structure, easily manufacturing, cost is low, is the update product that steel-plastic composite pipe connects.
(4), description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the utility model sectional view.
(5), embodiment
The utility model comprises left differential 1, right differential 3, lining 4 and left and right steel- plastic composite pipe 8,6, as shown in drawings.Be fixed with seal ring 5 on the external cylindrical surface at lining 4 two ends, it is inserted in the port of two left and right steel- plastic composite pipes 8,6 of reaming simultaneously.In order to make pipe fitting realize isometrical connection in the joint, the internal diameter of lining is identical with the internal diameter of the steel-plastic composite pipe that will connect.Two left and right steel-plastic composite pipe 8,6 ports are outward left and right differentials 1,3, the endoporus of left and right differential 1,3 is corresponding with left and right steel-plastic composite pipe 8,6 port shape, in order to increase anti-pull-out force of the present utility model, the hangnail 7 that increases frictional force is arranged on the inner hole wall of differential.Said hangnail 7 can be a screw thread.6 uniform through holes are arranged respectively in the flanging of left and right differential 1,3, be installed with the bolt and nut 2 that is used for fixing differential between through hole.
Add man-hour, the left differential 1 that has hangnail on the inwall is enclosed within on the right-hand member external cylindrical surface of the left steel-plastic composite pipe 8 that will connect, enlarging on flaring machine then, left differential 1 is fixed with left steel-plastic composite pipe 8 interlocks.Same right differential 3 is enclosed within on the left end external cylindrical surface of the right steel-plastic composite pipe 6 that will connect, enlarging on flaring machine then, and right differential 3 is fixed with right steel-plastic composite pipe 6 interlocks.In the left and right steel- plastic composite pipe 8,6 of reaming, insert the lining 4 that is fixed with seal ring 5 on the external cylindrical surface.In the flanging through hole of left and right differential 1,3, put on bolt and nut 2, tighten and get final product.
Claims (5)
1, a kind of flange join type steel-plastic composite pressure pipe special pipe fitting, it is characterized in that: it comprises left differential (1), right differential (3), a lining (4) and a left side, right steel-plastic composite pipe (8,6), be fixed with seal ring (5) on the external cylindrical surface at lining (4) two ends, it is inserted in the left side of reaming simultaneously, right steel-plastic composite pipe (8,6) in the port, a left side, right steel-plastic composite pipe (8,6) port is outward a left side, right differential (1,3), a left side, right differential (1,3) a endoporus and a left side, right steel-plastic composite pipe (8,6) port shape is corresponding, uniform through hole is arranged in its flanging, be installed with the bolt and nut (2) that is used for fixing differential between through hole.
2, special pipe fitting according to claim 1 is characterized in that: the internal diameter of described lining (4) is identical with the internal diameter of the left and right steel-plastic composite pipe that will connect (8,6).
3, special pipe fitting according to claim 1 is characterized in that: the hangnail (7) that increases frictional force is arranged on the inner hole wall of described left and right differential (1,3).
4, special pipe fitting according to claim 3 is characterized in that: said hangnail (7) is a screw thread.
5, according to claim 1,2 or 3 described special pipe fittings, it is characterized in that: the outer surface of described left and right differential (1,3) and lining (4) has one deck plastic-blasting, nickel plating, zinc-plated or injection moulding anticorrosive coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02247915 CN2588167Y (en) | 2002-08-09 | 2002-08-09 | Flange join type steel-plastics combined joint for pressure pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02247915 CN2588167Y (en) | 2002-08-09 | 2002-08-09 | Flange join type steel-plastics combined joint for pressure pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588167Y true CN2588167Y (en) | 2003-11-26 |
Family
ID=33718665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02247915 Expired - Fee Related CN2588167Y (en) | 2002-08-09 | 2002-08-09 | Flange join type steel-plastics combined joint for pressure pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2588167Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328536C (en) * | 2005-10-15 | 2007-07-25 | 新兴铸管股份有限公司 | Internal expansion jointed pipe fitting special for steel-plastic composite pressure pipe |
| CN100414162C (en) * | 2004-12-07 | 2008-08-27 | 葛文宇 | Connection method of bayonet sealed glass fibre reinforced plastic pipe line |
| CN107504295A (en) * | 2017-09-26 | 2017-12-22 | 新兴铸管股份有限公司 | A kind of connector being connected for steel-plastic composite pressure pipe with valve |
-
2002
- 2002-08-09 CN CN 02247915 patent/CN2588167Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414162C (en) * | 2004-12-07 | 2008-08-27 | 葛文宇 | Connection method of bayonet sealed glass fibre reinforced plastic pipe line |
| CN1328536C (en) * | 2005-10-15 | 2007-07-25 | 新兴铸管股份有限公司 | Internal expansion jointed pipe fitting special for steel-plastic composite pressure pipe |
| CN107504295A (en) * | 2017-09-26 | 2017-12-22 | 新兴铸管股份有限公司 | A kind of connector being connected for steel-plastic composite pressure pipe with valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031126 Termination date: 20110809 |