CN205090103U - Anticorrosive steel pipe of heavy -calibre - Google Patents
Anticorrosive steel pipe of heavy -calibre Download PDFInfo
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- CN205090103U CN205090103U CN201520771074.5U CN201520771074U CN205090103U CN 205090103 U CN205090103 U CN 205090103U CN 201520771074 U CN201520771074 U CN 201520771074U CN 205090103 U CN205090103 U CN 205090103U
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- steel pipe
- steel
- pipe body
- heavy caliber
- rib
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model discloses an anticorrosive steel pipe of heavy -calibre, including the steel pipe body, be equipped with continuous heliciform steel rib on the outer wall of steel pipe body, and be the link respectively at the both ends of steel pipe body the inside and outside wall hot compress of steel pipe body has the polymer anticorrosive coating. This pipeline uses the metal preparation, and the mode that can adopt on -the -spot welded connection arranges and also can adopt flange joint's mode to arrange by the pipeline, and is energy -concerving and environment -protective, but recycle accords with cyclic utilization's environmental protection theory.
Description
Technical field
This model utility relates to bigbore pressurized tube technical field, specifically a kind of heavy caliber anti-corrosive steel tube.
Background technique
The heavy caliber pressurized tube purposes of representative buried use; Generally comprise the engineering field in oil transportation, gas transmission, water supply, draining etc.Its representative major product has: the pipe material products such as 3PE anti-corrosive steel tube, ductile iron pipe, above two kinds of products all have employed the preservative treatment of different process and pipeline connection technology makes, but because its this body structure of product limit, the technical requirements be difficult to realize energy-saving and environmental protection further, extending the aspects such as tubing working life, is described for 3PE anti-corrosive steel tube.
3PE anti-corrosive steel tube, in engineering practice for many years, has proved a kind of production technology of Technical comparing maturation.But because its product structure limit, in pipeline making and pipeline connection procedure, the also technological deficiency of various degrees.One, in making heavy caliber pipe process, in order to reach the technical requirements of hoop rigidity, tube wall thickness must be increased and could meet standard-required, for the pipeline of diameter 2 meters, in order to meet the requirement of ring stiffness, its pipeline wall thickness, close to 30 millimeters, therefore increases raw-material consumption and manufacturing cost burden.Its two, need Site Welding, be welded to connect in process at pipeline field, because field condition limited, the preservative treatment of weld is had to the hidden danger of quality of the aspect such as lack of standardization, not thorough, and then increase the maintenance cost of pipework, have impact on the working life of pipeline.
From data disclosed in Chinese Patent Application No. 201410548040.X and 201020615835.5 two kind of product, there is the technical problem that 3PE anti-corrosive steel tube has in two kinds of patented products equally.
Model utility content
In order to solve the deficiencies in the prior art, the utility model provides a kind of heavy caliber anti-corrosive steel tube, heavy caliber wherein refers generally to the steel pipe of diameter more than 0.5 meter, the making of welding or flange connection type steel pipe is held for heavy caliber, for solving heavy caliber oil transportation, gas transmission, to, the defect of drainage pipe energy consumption high (tubing wall thickness is large), maintenance cost large (control of Site Welding difficult quality) etc., solve the problem of comprehensive anticorrosive simultaneously.
The utility model solves the technological scheme that its technical problem adopts:
A kind of heavy caliber anti-corrosive steel tube, comprise steel pipe body, it is characterized in that, the outer wall of described steel pipe body is provided with continuous print helical steel rib, and is respectively connecting end at the two ends of steel pipe body, has polymer anticorrosive coat in the inside and outside wall hot compress of described steel pipe body.
Further, described steel pipe body two ends are respectively equipped with an adpting flange, and described flange is provided with the groove placing seal ring, and described flange is provided with bolt hole.
Further, described polymer anticorrosive coat is the one in PE, PP, EP, PVC or bituminous epoxy.
Further, the section of described steel rib is the one in circular cross section, arc-shaped sections, trapezoidal cross-section or yi word pattern section.
Further, described steel rib is arranged on the outer wall of steel pipe body by the mode of welding.
Further, described steel rib and steel pipe body mother metal one-body molded.
The beneficial effects of the utility model are:
This pipeline utilize metallic material intrinsic to liquid, the impermeable feature of gas, in addition along large-caliber spiral outer wall of steel pipe spiral welded steel rib, for improving its hoop rigidity, and effectively reduce the wall thickness of pipeline, such as the wall thickness of the pipeline of same specification drops to 8 millimeters by original 20 millimeters, only need to increase a small amount of steel rib, reduce the consumption more than 30% of steel, alleviate the weight of pipeline entirety, and the main performance index such as ring stiffness can be made up by the setting of steel rib, realize the target of thin-walled, high ring rigidity.
The places such as flange realize covering without dead angle of anticorrosive coat, utilize the features such as the acid resistant alkali of resistant polymer, make through automatic work flow.Be the arteriopathy product between a kind of large-diameter steel pipe and heavy caliber PE tubing, substantially increase working life and the application area of product.
No matter easy construction, be welding or Flange joint, all can realize connecting fast, convenient construction.
Have that structure is simple, manufacturing efficiency is high simultaneously, reliable in quality, life cycle in 50 years with first-class feature.
This pipeline uses metal to make, and the mode that Site Welding can be adopted to connect carries out layout pipeline, the mode of Flange joint also can be adopted to arrange, energy-conserving and environment-protective, recoverable, meet the environmental protection concept recycled.
Accompanying drawing explanation
Fig. 1 is the sectional view of embodiment one.
Fig. 2 is embodiment one connection diagram.
Fig. 3 is the pipeline sectional view with flange arrangement.
Fig. 4 is the pipeline connection diagram with flange arrangement.
Fig. 5 be steel pipe and steel rib in conjunction with one of schematic diagram.
Fig. 6 be steel pipe and steel rib in conjunction with schematic diagram two.
Fig. 7 be steel pipe and steel rib in conjunction with schematic diagram three.
Fig. 8 is the section of steel plate figure of embodiment two.
Fig. 9 is the process flow diagram of embodiment one.
Figure 10 is the process flow diagram of embodiment two.
In figure: 1 steel pipe, 11 steel ribs, 12 external anti-corrosion layers, anticorrosive coat in 13,2 weld seams, 3 flanges, 31 bolts.
Embodiment
Embodiment one, and as shown in Figure 1 to Figure 2, for existing defect, protection main body of the present utility model is as follows:
What develop is a kind of steel pipe, and being different from traditional Steel-plastic pipeline and Spiral Steel Pipe, is functionally or in preparation process all have outstanding feature.
Its basic principle first makes steel pipe, then welding outside steel rib, then carries out fixed length cutting, port process, finally carry out preservative treatment, detection.
Based on above-mentioned description, the steel pipe that the utility model provides has following structure:
Steel pipe 1, is welded or selects Spiral Steel Pipe, the steel pipe that the inner and outer surface namely utilizing steel band to be formed through spiral welded is smooth.Diameter of steel tube is generally more than 0.5 meter, and the large-scale steel pipe that municipal engineering such as, use, Spiral Steel Pipe has special market supporting, can purchase and also can oneself manufacture.Common design, for meeting the usage requirement of ring stiffness, the steel pipe of 2 rice diameters needs wall thickness design usually at 20-30 millimeter, need to consume a large amount of steel, by enforcement of the present utility model, the wall thickness of steel pipe can be reduced in less than 10 millimeters, simultaneously by the compound of steel rib, the integral loop rigidity of steel pipe is not reduced, and quality of product is also guaranteed.
At steel rib or the steel band of the outer surface welding spiral of steel pipe 1, form the steel rib 11 of spiral-shaped layout, wherein the cross section of steel rib can be arc, trapezoidal etc., as shown in Figs. 5 to 7, also can use the steel band of yi word pattern, form the helical steel rib of certain intervals.
It is shaping that above-mentioned steel rib will use rolling mill to be rolled, and the pattern of section is determined by the roll of rolling.
Above-mentioned spiral steel rib generally by welding mode and steel pipe be welded to connect, this is committed step one, and then makes the joint at two ends.
By reference to the accompanying drawings 9, be described in detail below by its working process.
The first step, steel pipe 1 is prepared in welding, screw winding is adopted to coordinate the technique of submerged arc welding or highfrequency welding to carry out making steel pipe, then, steel pipe is placed on a mobile platform or trailer, forms steel pipe inlet pipe platform, generally, mobile platform moves along the rectilinear direction of production line, is provided with a carrying steel pipe on a mobile platform and the mechanism driving steel pipe to rotate simultaneously, makes steel pipe be in rotary state.
Second step, steel rib rolling system is utilized steel band rolling to be formed the steel rib meeting usage requirement, wherein the preparation of this steel rib rolling system and steel pipe is synchronously carried out, then at outer surface Weldable Steel rib or the steel band of steel pipe 1, form spiral helicine steel rib 11, the pattern of steel rib is various, as shown in Figs. 5 to 7, steel band wherein can form arc, trapezoidal cross-section by the mode of rolling in advance, strengthens its intensity, reduces the consumption of steel band.
The thickness of usual steel rib and the wall thickness of steel pipe close to or slightly thin.
For the large diameter pipeline of 2 rice diameters, wall thickness 6 ~ 10 millimeters, steel rib thickness is 2 ~ 8 millimeters, and steel rib height is 40 ~ 80 millimeters.
3rd step, fixed length cutting, form the steel pipe of predetermined length, such as 10 meters are one section, and reserve the space be welded to connect, and particularly, carry out repair welding to weld, carry out shutoff simultaneously, repair end face the steel rib port at tangent plane place.
4th step, the mobile platform being loaded with body 1 is transferred to ball blast station, shot-blasting machine is utilized to carry out Shot Blasting to outer surface of tube body, steel rib, soldering point, pass through Shot Blasting, rust cleaning, surface peening can be realized, the intensity on surface and degree of compaction are increased, realizes preliminary treatment, wherein Shot Blasting uses ball blast machinery
5th step, the hot compress preservative treatment carrying out outer surface is set about immediately after Shot Blasting, general hot compress mode is: utilize the mode of flame heating or heating in medium frequency that the surface temperature of tubing is warming up to 80 ~ 180 degree, then the hot compress of resistant polymer is carried out, wherein, the form of resistant polymer at least comprises following material: polyethylene, PP, PE, bituminous epoxy, PVC, EP etc., forms external anti-corrosion layer 12, then air-cooled or water-cooled is used to lower the temperature to tubing
6th step, utilizes the mode in step 4, five to carry out ball blast, hot compress preservative treatment to inner surface of tube body, anticorrosive coat 13 in being formed, last cooling forming.
7th step, carries out carrying out flaw detection, and carry out online and offline inspection, the project of carrying out flaw detection comprises anticorrosion Thickness sensitivity etc., finally carries out packaging stock.
Above-mentioned steel pipe, when connecting, adopts On-site Welding Technology to connect, forms weld seam 2 by welding.
As a kind of optimized project, at the two ends welding flange 3 of port, can be fastenedly connected by bolt 31, form Flange joint, as shown in Figure 3 to Figure 4, connect effect for improving, rubber seal is set at the end face of flange plate, improve sealability.
Embodiment two, and by reference to the accompanying drawings 10,
Be with embodiment one difference, spiral steel rib is not welded on body, but integrated with it, as Fig. 8.Use rolling system Direct Rolling with the thick steel band of steel rib, then carry out welding and form Spiral Steel Pipe, finally carry out preservative treatment and detection.Being formed with all steel pipeline of spiral bar, pattern is also comprise cannot be blue and by there being flange two kinds.
Embodiment recited above is described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; relevant technical staff in the field, to various distortion of the present utility model and improvement, all should expand in protection domain as determined in the utility model claims.
Claims (7)
1. a heavy caliber anti-corrosive steel tube, comprises steel pipe body, it is characterized in that, the outer wall of described steel pipe body is provided with helical steel rib, and is respectively connecting end at the two ends of steel pipe body, has polymer anticorrosive coat in the inside and outside wall hot compress of described steel pipe body.
2. a kind of heavy caliber anti-corrosive steel tube according to claim 1, is characterized in that, described steel pipe body two ends are respectively equipped with an adpting flange.
3. a kind of heavy caliber anti-corrosive steel tube according to claim 2, is characterized in that, described flange is provided with the groove placing seal ring.
4. a kind of heavy caliber anti-corrosive steel tube according to claim 1, is characterized in that, described polymer anticorrosive coat is the one in PE, PP, EP, PVC or bituminous epoxy.
5. a kind of heavy caliber anti-corrosive steel tube according to claim 1, is characterized in that, the section of described steel rib is the one in circular cross section, arc-shaped sections, trapezoidal cross-section or yi word pattern section.
6. a kind of heavy caliber anti-corrosive steel tube according to claim 1, is characterized in that, described steel rib is arranged on the outer wall of steel pipe body by the mode of welding.
7. a kind of heavy caliber anti-corrosive steel tube according to claim 1, is characterized in that, described steel rib and steel pipe body mother metal one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771074.5U CN205090103U (en) | 2015-09-30 | 2015-09-30 | Anticorrosive steel pipe of heavy -calibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771074.5U CN205090103U (en) | 2015-09-30 | 2015-09-30 | Anticorrosive steel pipe of heavy -calibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205090103U true CN205090103U (en) | 2016-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520771074.5U Expired - Fee Related CN205090103U (en) | 2015-09-30 | 2015-09-30 | Anticorrosive steel pipe of heavy -calibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205090103U (en) |
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2015
- 2015-09-30 CN CN201520771074.5U patent/CN205090103U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20160930 |