CN2416323Y - Joints of steel plastic compound pipes - Google Patents
Joints of steel plastic compound pipes Download PDFInfo
- Publication number
- CN2416323Y CN2416323Y CN 00200822 CN00200822U CN2416323Y CN 2416323 Y CN2416323 Y CN 2416323Y CN 00200822 CN00200822 CN 00200822 CN 00200822 U CN00200822 U CN 00200822U CN 2416323 Y CN2416323 Y CN 2416323Y
- Authority
- CN
- China
- Prior art keywords
- steel
- composite pipe
- pipe fitting
- pipes
- steel plastic
- 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 connecting device of steel plastic compound pipes. A compound pipe fitting is arranged between two steel plastic compound pipes. The inner diameter of each compound pipe fitting and the inner diameter of the steel plastic compound pipes are equal. Threaded connection is adopted by the compound pipe fitting and the steel plastic compound pipes. The wall thickness provided with an inner thread on the position of the end part of the compound pipe fitting is thickened, and grooves are arranged in the thickened position. Sealing washers are arranged in the grooves. The sealing washers are exactly butted on the end parts of the steel plastic compound pipes. Plastic protecting layers are arranged on the steel plastic compound pipes and the inner circle surface of the compound pipe fitting. Sealant is coated on the combined positions of the end parts of the steel plastic compound pipes and the sealing washers. The connecting device of steel plastic compound pipes solves the sealing and anti-corrosion problem of the threaded connection of the steel plastic compound pipes; meanwhile, the smoothness in pipelines can also be ensured. The connecting device of steel plastic compound pipes has expedite liquid and power saving. The connecting device of steel plastic compound pipes can be applied to a delivery pipeline of corrosive medium fluid and a water pipeline for environmental protection. The problems brought by steel pipes which are welded or galvanized are overcome.
Description
The utility model relates to a kind of connection set, exactly relates to the connection set of steel-plastic composite pipe.
At present used multiple tube mainly contains two kinds of steel-plastic composite pipe and aluminium-plastic composite pipes.Steel-plastic composite pipe is to make with lining inner surface of tubes with plastics, and steel pipe does that skeleton is gained in strength and rigidity, and plastics are done the protective layer corrosion protection and reduced fluid resistance.Because etch-proof needs, this pipeline is bigger, makes the form of flange flanging more, and the flange short tube of making fixed length when dispatching from the factory connects to on-the-spot, can not cut at the scene, installs very inconvenient.Its pipe fitting of the steel-plastic composite pipe that is threaded at present adopts form as shown in Figure 1, in order to solve the sealing corrosion proof problem, in the threaded connection place of each pipe fitting a bulge loop is arranged all, that is to say, two bulge loops will be arranged on each pipe fitting at least, form second throttle and increase resistance, cause power consumption, influence fluid and flow.The pipe fitting of aluminium-plastic composite pipe adopts steel or stainless steel to make mostly, and is specious but cost is higher, fundamentally do not solve the sealing corrosion proof problem, still can not use in Korrosionsmedium.And, aluminium-plastic composite pipe cost height.Stiffness and strength all is not so good as steel pipe, and large-scale promotion has problem.
The purpose of this utility model is exactly the sealing corrosion problem that solves the steel-plastic composite pipe joint, and a kind of connection set of novel steel-plastic composite pipe is provided.
The purpose of this utility model realizes by following technical proposals; the connection set of steel-plastic composite pipe of the present utility model is included in a composite pipe fitting between two steel-plastic composite pipes; the internal diameter of this pipe fitting equates with the steel-plastic composite pipe internal diameter; composite pipe fitting is to adopt to be threaded with steel-plastic composite pipe; the wall thickness at the internal thread place that the end had of composite pipe fitting is thickeied; and one groove is arranged in the inside of thickening place; be provided with seal washer in the groove; the sealing packing ring just in time withstands on the end of steel-plastic composite pipe; be provided with plastic protective layer at steel-plastic composite pipe and composite pipe fitting inner circumferential surface, scribble sealer in steel-plastic composite pipe end and seal washer junction.If composite pipe fitting is an elbow, then be provided with stiffening rib at turn of bilge.Composite pipe fitting also can be threeway, four-way, valve, pipe collar or union.
The utility model has the advantages that the sealing corrosion problem that is threaded that has solved steel-plastic composite pipe, can guarantee simultaneously in the pipeline smooth again, fluid is unimpeded, save power, can be applicable to the transfer canal and the environmental protection water pipeline of Korrosionsmedium fluid, overcome the problem of bringing because of welding or steel tube place such as zinc-plated.
Further describe structure of the present utility model below in conjunction with accompanying drawing, wherein:
Fig. 1 is the connection set of the steel-plastic composite pipe of prior art;
Fig. 2 is the connection set of steel-plastic composite pipe of the present utility model.
Now referring to Fig. 2, one composite pipe fitting 2 is arranged between steel-plastic composite pipe 1 and 4, this pipe fitting 2 equates with the internal diameter of steel-plastic composite pipe 1 and 4, composite pipe fitting 2 is to adopt to be threaded with steel-plastic composite pipe 1 and 4, the wall thickness that has the internal thread place in the end of composite pipe fitting 2 is thickeied (as shown in the figure), and in the inside of thickening place one groove is arranged, be provided with seal washer 2 in the groove, sealing packing ring 2 just in time withstands on the end of steel-plastic composite pipe 1 and 4.Steel-plastic composite pipe 1 and 4 and the internal surface of composite pipe fitting 3 on be provided with plastic protective layer 5, scribble sealer (not marking among the figure) in the end of steel-plastic composite pipe 1 and 4.
Claims (3)
1; the connection set of steel-plastic composite pipe; it is characterized in that between two steel-plastic composite pipes, being provided with a composite pipe fitting; the internal diameter of this composite pipe fitting equates with the internal diameter of steel-plastic composite pipe; composite pipe fitting is to adopt to be threaded with steel-plastic composite pipe; the end of composite pipe fitting has the wall thickness at internal thread place and is thickeied; and the inside in thickening place is fluted; be provided with seal washer in the groove; the sealing packing ring just in time withstands on the end of steel-plastic composite pipe; be provided with plastic protective layer at steel-plastic composite pipe and composite pipe fitting internal circular surfaces, scribble sealer in steel-plastic composite pipe end and seal washer junction.
2, the connection set of steel-plastic composite pipe according to claim 1 is characterized in that composite pipe fitting is a bending, and this bending composite pipe fitting has stiffening rib.
3, the connection set of steel-plastic composite pipe according to claim 1 is characterized in that described composite pipe fitting is threeway, four-way, valve, pipe collar or union.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00200822 CN2416323Y (en) | 2000-01-19 | 2000-01-19 | Joints of steel plastic compound pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00200822 CN2416323Y (en) | 2000-01-19 | 2000-01-19 | Joints of steel plastic compound pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2416323Y true CN2416323Y (en) | 2001-01-24 |
Family
ID=33570198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00200822 Expired - Fee Related CN2416323Y (en) | 2000-01-19 | 2000-01-19 | Joints of steel plastic compound pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2416323Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900155A (en) * | 2012-10-30 | 2013-01-30 | 江西省电力科学研究院 | Power transmission line concrete rod weld joint corrosion prevention method |
| CN107218464A (en) * | 2016-03-22 | 2017-09-29 | 杨明昆 | A kind of electric smelting connecting pipe of steel-plastics composite pipe |
-
2000
- 2000-01-19 CN CN 00200822 patent/CN2416323Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900155A (en) * | 2012-10-30 | 2013-01-30 | 江西省电力科学研究院 | Power transmission line concrete rod weld joint corrosion prevention method |
| CN107218464A (en) * | 2016-03-22 | 2017-09-29 | 杨明昆 | A kind of electric smelting connecting pipe of steel-plastics composite pipe |
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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 |