CN214467877U - Outdoor gas pipeline corrosion prevention system suitable for coastal area - Google Patents
Outdoor gas pipeline corrosion prevention system suitable for coastal area Download PDFInfo
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- CN214467877U CN214467877U CN202120550043.2U CN202120550043U CN214467877U CN 214467877 U CN214467877 U CN 214467877U CN 202120550043 U CN202120550043 U CN 202120550043U CN 214467877 U CN214467877 U CN 214467877U
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Abstract
The utility model discloses an outdoor gas pipeline anti-corrosion system suitable for coastal areas, which comprises a gas main pipeline connected with a gas pipeline on the ground, pipeline supports are distributed on the gas main pipeline, the gas main pipeline is connected with a wall-through pipeline through a vertical pipe branch tee joint, an anti-corrosion layer of the whole gas main pipeline comprises an epoxy powder layer and a weather-resistant polyester powder layer, an anti-corrosion structure of the gas pipeline on the ground comprises a first anti-corrosion adhesive tape layer and a protective steel sleeve, the anti-corrosion layer of the pipeline support comprises an epoxy powder layer and a weather-resistant polyester powder layer, a self-fusing anti-corrosion adhesive tape is wound at a welding port of the vertical pipe branch tee joint and the gas main pipeline and/or the wall penetrating pipeline, the vertical pipe branch tee joint is integrally covered with the anti-corrosion adhesive tape, a double-coating wall penetrating sleeve is sleeved outside the wall penetrating pipeline, and the wall penetrating pipeline is fixedly connected with the wall penetrating sleeve through a centering protection device. The utility model discloses an outdoor gas pipeline corrosion prevention system is anticorrosive effectual, the life of extension gas pipeline.
Description
Technical Field
The utility model belongs to the anticorrosive field of pipeline, concretely relates to outdoor gas pipeline corrosion prevention system suitable for coastal area.
Background
According to the 6.1.2 provisions in GB50494 Town gas technical Specification: the design service life of the gas pipeline is not less than 30 years. In addition, the following is also provided in the written description: the service life of the steel pipeline can exceed 30 years under the condition of good corrosion control; the service life of the polyethylene pipe and the cast iron pipe can reach 40-50 years generally.
However, in the actual use process, especially for the open-air gas pipelines exposed in the air, the traditional anticorrosion process adopts the mode of brushing the antirust paint, because of the non-standard manual operation, the long-term exposure to the sun, rain and humidity, the influence of ultraviolet irradiation and acid components in air moisture, particularly, the high-salinity chloride ions in coastal areas accelerate the corrosion degree of pipelines, so that the problems of peeling, falling, corrosion and even perforation of outdoor overhead pipelines, indoor wall/floor penetrating pipelines and other pipelines can be caused in about 2 years, and the corrosion range is enlarged by points and surfaces, the service life of the gas pipeline is greatly reduced, the risks of potential safety hazard, gas leakage and the like are caused, the security of the user is threatened, and therefore, gas operation enterprises need to strengthen inspection, maintenance and pipeline replacement, the operation cost of the gas enterprises is increased seriously, and the enterprise income is reduced.
SUMMERY OF THE UTILITY MODEL
To the perishable problem of gas pipeline among the prior art, the utility model provides an outdoor gas pipeline corrosion prevention system suitable for coastal area, different structures are accurate anticorrosive, adopt different antiseptic measures to specific part, slow down gas pipeline corrosion rate.
The utility model discloses an outdoor gas pipeline anti-corrosion system suitable for coastal areas, which comprises a gas main pipeline connected with one end (the end out of the ground) of a ground gas pipeline, wherein pipeline supports for fixing the gas main pipeline are distributed on the gas main pipeline, the gas main pipeline is connected with a wall-through pipeline (the wall-through pipeline is connected with a horizontal interface of the riser branch tee) which traverses a wall body through the riser branch tee, the gas main pipeline and the wall-through pipeline are welded with the riser branch tee, an anti-corrosion layer of the whole gas main pipeline sequentially comprises an epoxy powder layer and a weather-resistant polyester powder layer from inside to outside, an anti-corrosion structure of the ground gas pipeline sequentially comprises a first anti-corrosion adhesive tape layer wound on the ground gas pipeline, a protective steel sleeve added outside the first anti-corrosion adhesive tape layer and a second anti-corrosion layer wrapped outside the protective steel sleeve from inside to outside, the anti-corrosion layer of the pipeline support is sequentially an epoxy powder layer and a weather-resistant polyester powder layer from inside to outside, a self-fusing anti-corrosion adhesive tape is wound on the welding openings of the vertical pipe branch tee joint, the gas main pipeline and the wall-penetrating pipeline, the anti-corrosion adhesive tape covers the vertical pipe branch tee joint integrally, a wall-penetrating sleeve, preferably a double-coating wall-penetrating sleeve is sleeved outside the wall-penetrating pipeline, and the wall-penetrating pipeline and the wall-penetrating sleeve are fixedly connected through a centering protection device fixed on a wall-penetrating opening.
Further, the thicknesses of the epoxy powder layer and/or the weather-resistant polyester powder layer of the main gas pipeline are not less than 200mm (such as 200mm and 220mm) and not less than 150mm respectively, and the anticorrosive layer of the main gas pipeline is formed by spraying in a mechanical automatic anticorrosive layer spraying mode.
Furthermore, the gas pipeline out of the ground is a steel pipe part of a steel-plastic adapter extending 20-30cm from the ground, and only refers to a part turning underground to the ground, such as a part connected with a vertical pipe from a courtyard to a building, and the connected part is a main pipeline which is arranged in an overhead and open manner after being welded. The other end of the gas pipeline out of the ground is connected with an underground pipe network such as a community courtyard pipeline.
Furthermore, the first anti-corrosion adhesive tape layer of the gas pipeline out of the ground is a black self-fusion type anti-corrosion adhesive tape layer, and the winding length of the anti-corrosion adhesive tape reaches above 15cm of each of the upper part and the lower part of the horizontal line.
Further, the protective steel sleeve of the gas pipeline on the ground is 8-12cm, preferably about 10cm, above the ground.
Furthermore, the color of the second anti-corrosion adhesive tape layer of the gas pipeline out of the ground is consistent with that of the main gas pipeline, for example, the yellow self-fusion type anti-corrosion adhesive tape layer, the winding length of the second anti-corrosion adhesive tape layer exceeds that of the first anti-corrosion adhesive tape layer,
further, the thicknesses of the epoxy powder layer and the weather-resistant polyester powder layer in the anticorrosive layer of the pipeline support are respectively not less than 200mm (for example, 200-.
Furthermore, the self-fusing anti-corrosion adhesive tape wound on the welding openings of the vertical pipe branch tee joint and the gas main pipeline and/or the wall-penetrating pipeline is overlapped by 50%, the winding range completely covers the welding opening processing surface range, and the vertical pipe branch tee joint completely covers the tee pipe fitting in a cross winding mode.
Furthermore, the wall-through pipeline is a flexible epoxy resin anticorrosion finished pipeline.
Furthermore, the wall bushing is a hollow pipe, penetrates through and is fixed on the wall body, the outer diameter of the wall bushing is two sizes larger than that of the wall bushing according to the design specification principle, the port of the wall bushing is flush with the wall surface, the centering protection device is arranged between the wall bushing and is of a hollow outer edge convex structure, and the convex part extends out of the end surface of the wall bushing to play a role in keeping the position of the wall bushing centered and fixing the wall bushing and the wall bushing.
The above-mentioned epoxy powder layer may be formed by coating a commercially available epoxy resin coating, and the above-mentioned weather-resistant polyester powder layer may be formed by coating a commercially available weather-resistant polyester resin coating.
The utility model has the advantages that:
the utility model discloses an outdoor gas pipeline corrosion prevention system can effectively reduce the corruption of outdoor gas pipeline, and the high salinity environment of specially adapted coastal area improves pipeline life, and the while is promoted strong.
Drawings
Fig. 1 is a schematic diagram of the outdoor gas pipeline corrosion prevention system suitable for the coastal region of the present invention.
Fig. 2 is a schematic view of the corrosion prevention structure of the gas pipeline 1.
Fig. 3 is a schematic structural diagram of an anticorrosive coating of a main gas pipeline.
Fig. 4 is a schematic view of a corrosion prevention structure of the through-wall pipe.
Reference numerals:
1-a ground gas outlet pipeline, 2-an anti-corrosion structure of the ground gas outlet pipeline, 201-a first anti-corrosion adhesive tape layer, 202-a protective steel sleeve, 203-a second anti-corrosion adhesive tape layer, 3-a gas main pipeline, 4-a pipeline bracket, 5-a vertical pipe branch tee, 6-a wall-through pipeline, 7-a wall-through sleeve and 8-a centering protection device.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-4, the utility model discloses an outdoor gas pipeline corrosion prevention system suitable for coastal area, it includes the gas trunk line 3 of being connected with the one end that goes out ground gas pipeline 1, it has pipeline bracket 4 that is used for fixed gas trunk line 3 to distribute on the gas trunk line 3, gas trunk line 3 is connected with the wall pipe 6 that crosses the wall body through riser branch tee 5 (wall pipe 6 and riser branch tee 5's horizontal interface connection), welded connection between gas trunk line 3 and wall pipe 6 and riser branch tee 5, the anticorrosive coating of whole gas trunk line 3 includes epoxy powder layer 301 and resistant polyester powder layer 302 from inside to outside in proper order, go out ground gas pipeline 1's anticorrosive structure 2 and include in proper order from inside to outside and twine the first anticorrosive adhesive tape layer 201 on going out ground gas pipeline, add outside the first anticorrosive adhesive tape layer protective steel sleeve 202 outside the first anticorrosive adhesive tape layer, The second anticorrosion adhesive tape layer 203 wrapped on the outer side of the protective steel sleeve, the anticorrosion layer of the pipeline support 4 is an epoxy powder layer and a weather-resistant polyester powder layer (not shown) from inside to outside in sequence, a self-fusion anticorrosion adhesive tape (not shown) is wound on the welding openings of the riser branch tee 5, the gas main pipeline 3 and the wall-through pipeline 6, the riser branch tee 5 is integrally covered with the anticorrosion adhesive tape, the wall-through sleeve 7 is sleeved on the outer portion of the wall-through pipeline 6, preferably, the wall-through sleeve is double-coated, and the wall-through pipeline 5 is fixedly connected with the wall-through sleeve 6 through a centering protection device 8 fixed on the wall-through opening.
The thicknesses of the epoxy powder layer 301 and the weather-resistant polyester powder layer 302 of the main gas pipeline 3 are preferably not less than 200mm and not less than 150mm respectively, and the anticorrosive layer of the main gas pipeline 3 can be formed by spraying in a mechanical automatic anticorrosive layer spraying manner.
The gas pipeline 1 out of the ground is a steel pipe part of the steel-plastic adapter which extends 20-30cm out of the ground. The other end of the gas pipeline out of the ground is connected with an underground pipe network such as a community courtyard pipeline.
The first anti-corrosion adhesive tape layer of the gas pipeline 1 out of the ground is a black self-fusion type anti-corrosion adhesive tape layer, and the winding length of the anti-corrosion adhesive tape reaches more than 15cm above the upper and lower parts of the horizontal line.
The protective steel sleeve of the surface gas pipeline 1 can be 8-12cm, preferably about 10cm, above the surface.
The color of the second anticorrosion adhesive tape layer of the gas pipeline 1 on the ground is consistent with that of the main gas pipeline, for example, the second anticorrosion adhesive tape layer is yellow and self-fusing, and the winding length of the second anticorrosion adhesive tape layer exceeds that of the first anticorrosion adhesive tape layer.
The thickness of the epoxy powder layer and the weather-resistant polyester powder layer in the anticorrosive coating of the pipeline support 4 is preferably not less than 200mm and not less than 150mm respectively, the anticorrosive coating of the pipeline support 4 is sprayed in a mechanical automatic anticorrosive coating spraying mode, the anticorrosive process of the pipeline support 4 is consistent with that of the main gas pipeline, and corrosion caused by potential difference among different materials is avoided.
The self-fusion anti-corrosion adhesive tape wound on the welded junction of the vertical pipe branch tee joint 5 and the main gas pipeline 3 and/or the wall-through pipeline 6 is lapped by 50 percent, the winding range completely covers the welded junction treatment surface range, and the vertical pipe branch tee joint completely covers the tee pipe fitting in a cross winding mode.
The through-wall pipeline 6 is a flexible epoxy resin anticorrosion finished pipeline.
The wall bushing 7 is a hollow tube, the outer diameter of the wall bushing is two dimensions larger than that of the wall bushing according to the design specification in principle, the port of the wall bushing is flush with the wall surface, the centering protection device 8 is a hollow outer edge convex structure, and the convex part extends out of the end surface of the wall bushing to play a role in keeping the position of the wall bushing centered and fixing the wall bushing and the wall bushing.
Through experimental, the utility model discloses a gas pipeline corrosion prevention system is excellent in coastal area high salinity environment corrosion resistance, and the corrosion of no corruption in exposing for a long time proves can effectively reduce the corruption of outdoor gas pipeline.
The foregoing describes preferred embodiments of the present invention, however, the foregoing description is not intended to be limiting. Many changes and modifications may be made by one of ordinary skill in the art without departing from the spirit and scope of the invention. Such changes or modifications are intended to be included within the scope of the appended claims.
Claims (10)
1. An outdoor gas pipeline anticorrosion system suitable for coastal areas comprises a gas main pipeline connected with one end of a gas pipeline going out of the ground, pipeline supports for fixing the gas main pipeline are distributed on the gas main pipeline, the gas main pipeline is connected with a wall-penetrating pipeline crossing a wall body through a vertical pipe branch tee, the gas main pipeline, the wall-penetrating pipeline and the vertical pipe branch tee are welded, an anticorrosion layer of the whole gas main pipeline sequentially comprises an epoxy powder layer and a weather-resistant polyester powder layer from inside to outside, an anticorrosion structure of the gas pipeline going out of the ground sequentially comprises a first anticorrosion adhesive tape layer wound on the gas pipeline going out of the ground, a protective steel sleeve added outside the first anticorrosion adhesive tape layer and a second anticorrosion adhesive tape layer wrapped outside the protective steel sleeve from inside to outside, and the anticorrosion layer of the pipeline supports sequentially comprises the epoxy powder layer and the weather-resistant polyester powder layer from inside to outside, the welding openings of the vertical pipe branch tee joint and the gas main pipeline and/or the wall-penetrating pipeline are wound with self-fusing anti-corrosion adhesive tapes, the vertical pipe branch tee joint is integrally covered with the anti-corrosion adhesive tapes, a double-coating wall-penetrating sleeve is sleeved outside the wall-penetrating pipeline, and the wall-penetrating pipeline and the wall-penetrating sleeve are fixedly connected through a centering protection device fixed on a wall-penetrating opening.
2. An outdoor gas pipeline corrosion prevention system suitable for coastal areas according to claim 1, characterized in that the thicknesses of the epoxy powder layer and the weather-resistant polyester powder layer of the main gas pipeline are respectively not less than 200mm and not less than 150 mm.
3. The outdoor gas pipeline corrosion prevention system suitable for the coastal region according to claim 1, wherein the gas pipeline coming out of the ground is a steel pipe portion of a steel-plastic adapter extending 20-30cm from the ground.
4. The outdoor gas pipeline corrosion prevention system suitable for the coastal areas as claimed in claim 1 or 3, wherein the first corrosion prevention adhesive tape layer of the gas pipeline coming out of the ground is a black self-fusion type corrosion prevention adhesive tape layer, and the winding length of the corrosion prevention adhesive tape reaches above 15cm of each of the upper and lower parts of the horizon.
5. An outdoor gas pipeline corrosion prevention system suitable for coastal areas according to claim 1 or 3, characterized in that the protective steel sleeve of the gas pipeline out of the ground is 10cm higher than the ground.
6. The outdoor gas pipeline corrosion prevention system for the coastal region as recited in claim 1, wherein the color of the second corrosion prevention tape layer exiting from the ground gas pipeline is consistent with the color of the main gas pipeline, and the winding length of the second corrosion prevention tape layer exceeds that of the first corrosion prevention tape layer.
7. The outdoor gas pipeline corrosion prevention system suitable for the coastal areas as recited in claim 1, wherein the thicknesses of the epoxy powder layer and the weather-resistant polyester powder layer in the corrosion prevention layer of the pipeline bracket are respectively not less than 200mm and not less than 150mm, and the corrosion prevention layer of the pipeline bracket is consistent with the main gas pipeline, so that corrosion caused by potential difference between different materials is avoided.
8. The outdoor gas pipeline corrosion prevention system suitable for the coastal areas as recited in claim 1, wherein the riser branch tee is overlapped with 50% of the self-fusing corrosion prevention adhesive tape wound around the welded junctions of the gas main pipeline and the wall-through pipeline, the winding range completely covers the welded junction treatment surface range, and the riser branch tee completely covers the tee pipe fitting in a cross winding manner.
9. An outdoor gas pipeline corrosion prevention system suitable for coastal areas according to claim 1 or 8, characterized in that the through-wall pipeline is a flexible epoxy resin corrosion prevention finished pipeline.
10. An outdoor gas pipeline corrosion prevention system suitable for coastal areas according to claim 1, wherein the wall bushing is a hollow tube having an outer diameter two dimensions larger than that of the wall bushing and a port flush with the wall surface, and the centering protector is a hollow outer edge "convex" type structure in which the convex portion extends out of the end surface of the wall bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120550043.2U CN214467877U (en) | 2021-03-17 | 2021-03-17 | Outdoor gas pipeline corrosion prevention system suitable for coastal area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120550043.2U CN214467877U (en) | 2021-03-17 | 2021-03-17 | Outdoor gas pipeline corrosion prevention system suitable for coastal area |
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| Publication Number | Publication Date |
|---|---|
| CN214467877U true CN214467877U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120550043.2U Active CN214467877U (en) | 2021-03-17 | 2021-03-17 | Outdoor gas pipeline corrosion prevention system suitable for coastal area |
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| CN (1) | CN214467877U (en) |
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- 2021-03-17 CN CN202120550043.2U patent/CN214467877U/en active Active
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