CN205479786U - Prevent plastic -coated steel tube that plastic -coated layer drops - Google Patents
Prevent plastic -coated steel tube that plastic -coated layer drops Download PDFInfo
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- CN205479786U CN205479786U CN201620156572.3U CN201620156572U CN205479786U CN 205479786 U CN205479786 U CN 205479786U CN 201620156572 U CN201620156572 U CN 201620156572U CN 205479786 U CN205479786 U CN 205479786U
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- plastic
- steel pipe
- coating layer
- longitudinal fluting
- coated layer
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Abstract
The utility model discloses a prevent plastic -coated steel tube that plastic -coated layer drops, including the outer wall be equipped with outer longitudinal Groove, inner wall be equipped with in longitudinal Groove's steel pipe, outer longitudinal Groove and interior longitudinal Groove interval set up, plastic -coated layer the surface of steel pipe is equipped with outside is equipped with interior plastic -coated layer at the internal surface of steel pipe, outer plastic -coated layer inboard is equipped with interior sand grip, the interior plastic -coated layer outside is equipped with outer sand grip is equipped with the electric installation in the plastic -coated layer including, a set of guide wire shaft of connection on the electric installation, guide wire shaft pass steel pipe and the setting of outer plastic -coated layer. The utility model discloses an advantage: effectively strengthened the friction resistance between steel pipe and the plastic layer, it is flexible to have prevented plastics expend with heat and contract with cold to warp, has eliminated the possibility that leads to the inner liner drawing breakage because of stress concentration to improved the fastness of being connected on plastic -coated layer and steel pipe surface greatly, plastic -coated not readily releasable comes off. Can effectively prevent intraductal produced static through electric installation and guide wire shaft.
Description
Technical field
This utility model relates to pipe technology field, particularly relates to a kind of plastic-coated steel preventing coating layer from coming off.
Background technology
nullPlastic-coated steel is a kind of pipeline by playing protection steel pipe inner wall on steel pipe inner wall with one layer of plastic layer of plastic spraying hot melt，Typically needed the inwall of steel pipe is processed before plastic-coated，Such as ball blast、The operations such as rust cleaning，The inwall making steel pipe is the brightest and the cleanest，Increase the being firmly combined with property of coating layer and steel pipe inner wall，But often there is, when normal use, the phenomenon that coating layer ruptures in plastic-coated steel，This is owing to the thermal coefficient of expansion gap of steel pipe Yu coating layer causes the most greatly，Under the identical temperature difference，The thermal volume expansion of the thermal volume expansion steel pipe to be far longer than of coating layer itself，So in the case of difference variation is relatively big，Coating layer easily produces retractility and peels off，Separate with steel pipe time serious and come off，Lose the protective effect of coating layer，And this elongation percentage difference raises along with temperature and strengthens，Especially when caliber is bigger，Big lining area relative accumulation deflection is big，Coating is more prone to shrink、Cracking、Separation comes off.Caliber more than the pipe of 600mm, because people can enter operation in pipeline, therefore can be welded to connect steel wire, stud etc. at inner surface of tube prevent stripping measure at inner surface of tube by measures such as welding.And for the plastic-coated steel that caliber is less, staff cannot be introduced into pipe interior and keeps in repair, pipeline can only be changed, thus add the maintenance cost of equipment.Simultaneously because plastic product easily produces electrostatic, electrostatic easily causes electric spark, consequently, it is possible to cause blast, causes the generation of security incident.
Utility model content
The purpose of this utility model is to solve shortcoming present in prior art, and a kind of plastic-coated steel preventing coating layer from coming off proposed.
To achieve these goals, this utility model adopts the technical scheme that
A kind of plastic-coated steel preventing coating layer from coming off, including steel pipe, outer surface at described steel pipe is provided with outer coating layer, inner surface at described steel pipe is provided with internal plastic coating layer, it is characterized in that: the uniform one group of outer longitudinal fluting of outer wall at described steel pipe, each described outer longitudinal fluting is arranged each along the bus of described steel pipe, longitudinal fluting in the inner wall even distribution one group of described steel pipe, each described interior longitudinal fluting is arranged each along the bus of described steel pipe, and described outer longitudinal fluting and described interior longitudinal fluting interval are arranged；
It is provided with in the inner side of described outer coating layer and the interior raised line of described outer longitudinal fluting corresponding matching, described interior raised line is arranged along the bus of described outer coating layer inwall, being provided with in the outside of described internal plastic coating layer and the outer raised line of described interior longitudinal fluting corresponding matching, described outer raised line is arranged along the bus of described internal plastic coating layer outer wall；
Being provided with electric installation in described internal plastic coating layer, connect one group of conductor rod on described electric installation, described conductor rod is arranged through described steel pipe and outer coating layer.
Preferably, described electric installation includes one group of ring shaped conductive bar be arrangeding in parallel, connects one group and connects conducting rod, connect described conductor rod at described connection conducting rod between described ring shaped conductive bar.
Preferably, the groove depth of described outer longitudinal fluting and described interior longitudinal fluting is 0.5mm 1mm.
The utility model has the advantage of: a kind of plastic-coated steel preventing coating layer from coming off provided by the utility model, owing to being equipped with longitudinal fluting in steel pipe inner and outer surfaces, thus inside and outside coating layer can be made to be partially submerged in reflow process in steel pipe groove, effectively enhance the frictional resistance between steel pipe and plastic layer, prevent plastics deformation of expanding with heat and contract with cold flexible, eliminate stress and concentrate the possibility causing inner liner drawing crack, thus substantially increasing the connection fastness of coating layer and steel tube surface, plastic-coated is not readily separated and comes off.Produced electrostatic in can effectively preventing pipe by electric installation and conductor rod.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of plastic-coated steel preventing coating layer from coming off provided by the utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
As it is shown in figure 1, a kind of plastic-coated steel preventing coating layer from coming off that this utility model provides, including steel pipe 1, the outer surface at described steel pipe 1 is provided with outer coating layer 4, and the inner surface at described steel pipe 1 is provided with internal plastic coating layer 6,
The uniform one group of outer longitudinal fluting 2 of outer wall at described steel pipe 1, each described outer longitudinal fluting 2 is arranged each along the bus of described steel pipe 1, longitudinal fluting 3 in the inner wall even distribution one group of described steel pipe 1, each described interior longitudinal fluting 3 is arranged each along the bus of described steel pipe 1, described outer longitudinal fluting 2 and described interior longitudinal fluting 3 interval are arranged, and the groove depth of described outer longitudinal fluting 2 and described interior longitudinal fluting 3 is 0.5mm 1mm.
It is provided with in the inner side of described outer coating layer 4 and the interior raised line 5 of described outer longitudinal fluting 2 corresponding matching, described interior raised line 5 is arranged along the bus of described outer coating layer 4 inwall, being provided with in the outside of described internal plastic coating layer 6 and the outer raised line 7 of described interior longitudinal fluting 3 corresponding matching, described outer raised line 7 is arranged along the bus of described internal plastic coating layer 6 outer wall.
It is provided with electric installation 8 in described internal plastic coating layer 6, described electric installation 8 includes one group of ring shaped conductive bar 8.1 be arrangeding in parallel, connect one group between described ring shaped conductive bar 8.1 and connect conducting rod 8.2, connecting described conductor rod 9 at described connection conducting rod 8.2, described conductor rod 9 is arranged through described steel pipe 1 and outer coating layer 4.
Claims (3)
1. the plastic-coated steel preventing coating layer from coming off, including steel pipe (1), outer surface at described steel pipe (1) is provided with outer coating layer (4), inner surface at described steel pipe (1) is provided with internal plastic coating layer (6), it is characterized in that: the uniform one group of outer longitudinal fluting (2) of outer wall at described steel pipe (1), each described outer longitudinal fluting (2) is arranged each along the bus of described steel pipe (1), longitudinal fluting (3) in the inner wall even distribution one group of described steel pipe (1), each described interior longitudinal fluting (3) is arranged each along the bus of described steel pipe (1), described outer longitudinal fluting (2) and described interior longitudinal fluting (3) interval are arranged；
It is provided with in the inner side of described outer coating layer (4) and the interior raised line (5) of described outer longitudinal fluting (2) corresponding matching, described interior raised line (5) is arranged along the bus of described outer coating layer (4) inwall, being provided with in the outside of described internal plastic coating layer (6) and the outer raised line (7) of described interior longitudinal fluting (3) corresponding matching, described outer raised line (7) is arranged along the bus of described internal plastic coating layer (6) outer wall；
Being provided with electric installation (8) in described internal plastic coating layer (6), described electric installation (8) one group of conductor rod (9) of upper connection, described conductor rod (9) is arranged through described steel pipe (1) and outer coating layer (4).
A kind of plastic-coated steel preventing coating layer from coming off the most according to claim 1, it is characterized in that: described electric installation (8) includes one group of ring shaped conductive bar (8.1) be arrangeding in parallel, connect one group between described ring shaped conductive bar (8.1) and connect conducting rod (8.2), connect described conductor rod (9) described connection conducting rod (8.2).
A kind of plastic-coated steel preventing coating layer from coming off the most according to claim 1, it is characterised in that: the groove depth of described outer longitudinal fluting (2) and described interior longitudinal fluting (3) is 0.5mm 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620156572.3U CN205479786U (en) | 2016-03-02 | 2016-03-02 | Prevent plastic -coated steel tube that plastic -coated layer drops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620156572.3U CN205479786U (en) | 2016-03-02 | 2016-03-02 | Prevent plastic -coated steel tube that plastic -coated layer drops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479786U true CN205479786U (en) | 2016-08-17 |
Family
ID=56658734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620156572.3U Active CN205479786U (en) | 2016-03-02 | 2016-03-02 | Prevent plastic -coated steel tube that plastic -coated layer drops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205479786U (en) |
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2016
- 2016-03-02 CN CN201620156572.3U patent/CN205479786U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |