CN201339767Y - Large prestressed spiral rib steel pipe - Google Patents
Large prestressed spiral rib steel pipe Download PDFInfo
- Publication number
- CN201339767Y CN201339767Y CNU2008201442381U CN200820144238U CN201339767Y CN 201339767 Y CN201339767 Y CN 201339767Y CN U2008201442381 U CNU2008201442381 U CN U2008201442381U CN 200820144238 U CN200820144238 U CN 200820144238U CN 201339767 Y CN201339767 Y CN 201339767Y
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- steel pipe
- steel
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- protective layer
- tube
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Abstract
The utility model relates to a large prestressed spiral rib steel pipe, which consists of a steel pipe body, protecting layers and a prestress steel wire, wherein the inner wall and the outer wall of the steel pipe body are respectively and fixedly provided with the protecting layers; the prestressed wire is wound on the outer wall of the steel pipe body in the protecting layer of the steel pipe; the inner wall of the steel pipe body is fixedly provided with continuous spiral steel ribs; and the steel rib is buried in the protecting layer of the inner wall of the steel pipe body. The utility model has the advantages of thin pipe wall thickness, light weight, good corrosion prevention performance, long service life, effective reduction of the integral cost of the pipes, various interface types and convenient construction. The utility model belongs to the large prestressed spiral rib steel pipe which conforms to the national policies of energy saving and discharge reduction.
Description
Technical field
The utility model relates to steel pipe, especially a kind of prestressing large-scale spiral fin steel tube.
Background technique
Steel pipe is mainly used in carries liquid and gas.Its major advantage is: intensity height, good toughness, bearing stress are big, and impact resistance and leakproofness are good, and plasticity is good, are convenient to welding and hot working.But its corrosion resistance is relatively poor, needs appropriate anti-corrosion measure.Steel pipe is generally made by high-quality low carbon steel (Q235) or low alloy steel (16Mn).The steel pipe of selling is most in the market is no pre-stressed steel pipe, especially oil transportation, the large-scale pipeline of gas transmission and water delivery, though can effectively finish the conveying task, but one is carried the economy input of project is very huge, especially steel general today of rising, its raw material iron ore amount of increase is particularly evident, pipeline with DN3600 is an example, operating conditions is: working pressure 0.6MPa, thickness of earth-fill cover 2m, the required steel plate thickness of common steel tube is at least 32mm, every linear meter(lin.m.) pipe line steel material use quantity is 2898Kg, though the steel pipe pipe thickness increases the purpose that can satisfy the discharge pressure fluid, but there are the following problems: 1. the steel pipe tube wall is thicker at present, the steel using amount that causes producing every steel pipe strengthens, and the cost of raw material is higher; 2. the tubing steel using amount adds that senior general causes transporting and the difficulty of constructing strengthens; 3. a large amount of uses of steel cause energy consumption more and more higher, and the especially consumption of some non-renewable resources does not meet the environmental protection policy of the energy-saving and emission-reduction that country advocates; 4. the protective layer of steel pipe is generally epoxide coal bituminous or slush at present, and antiseptic property is relatively poor, directly causes steel pipe shorter working life, has improved the cost of changing.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of prestressing large-scale spiral fin steel tube is provided, and this steel pipe tube wall is thin, in light weight, antiseptic property is good, working life is longer, can effectively reduce the whole cost of tubing, interface type is many, easy construction.
The utility model solves its technical problem and is achieved through the following technical solutions:
A kind of prestressing large-scale spiral fin steel tube; constitute by steel pipe body, protective layer, reinforcement wire; steel pipe inboard wall of tube body and outer wall are fixed with protective layer respectively; reinforcement wire is wrapped on the steel pipe tube wall under the protective layer; wherein be fixed with continuous spirality steel rib on the steel pipe inboard wall of tube body, this steel rib is embedded under the protective layer of steel pipe inboard wall of tube body.
And described protective layer is slush or composite fiber concrete.
And the reinforcement wire on the described steel pipe tube wall that is wrapped under the protective layer is the 1-3 layer.
And, the end Connecting format of described steel pipe body adopt that steel bell and spigot connects, flange connects or directly weld wherein a kind of.
Advantage of the present utility model and beneficial effect are:
1. be fixed with continuous spirality steel rib on this prestressing large-scale spiral fin steel tube inboard wall of tube body, this steel rib is embedded under the protective layer of steel pipe inboard wall of tube body, and this structure can evenly be resisted external pressure load and internal water pressure, has improved the tubing overall physical properties.
2. inwall of this prestressing large-scale spiral fin steel tube and outer wall all are fixed with protective layer; and its protective layer is complex fiber cement mortar or composite fiber concrete; effectively improved the anti-crack ability of protective layer; reduced the generation rate of microcrack; minimizing is to the corrosion of steel; increase the working life of tubing, and can effectively reduce the inner-walls of duct resistance, reduced whole running cost.
3. this prestressing large-scale spiral fin steel tube tube wall is wound with reinforcement wire, under same operating conditions, effectively reduce steel pipe walls thickness, the steel using amount that makes whole tubing is the 1/5-4/5 of common steel tube, in iron and steel price growing today, save the cost of raw material greatly, improved economic benefit.
This prestressing large-scale spiral fin steel tube extend protective layer the body two ends except can connecting with welding, can also coaxially respectively install steel bell and spigot or flange, constructing operation is easy; Because this tube material and tube wall is thinner, the body own wt is lighter, has also improved the ability of opposing uneven settlement to a certain extent.
5. steel pipe tube wall of the present utility model is thin, in light weight, antiseptic property is good, and working life is longer, effectively reduces the whole cost of tubing, and interface type is many, and easy construction is a kind of prestressing large-scale spiral fin steel tube that meets the national policy energy-saving and emission-reduction.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Embodiment
The utility model is described in further detail below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of prestressing large-scale spiral fin steel tube; by steel pipe body 3; protective layer; reinforcement wire 4 constitutes; the coaxial inner protective layer 2 that is fixed with of steel pipe inboard wall of tube body; this inner protective layer can be complex fiber cement mortar or composite fiber concrete or other anti-corrosion materials; the present embodiment inner protective layer is the former complex fiber cement mortar; the coaxial external protection 5 that installs of steel pipe tube wall; this external protection can be complex fiber cement mortar or composite fiber concrete or other anti-corrosion materials; the present embodiment external protection is the composite fiber concrete; the THICKNESS CONTROL of this steel pipe tube wall is the 1/16-1/100 of steel pipe caliber; actual demand according to engineering; the thickness of present embodiment steel pipe adopts the thickness of 1/16 steel pipe caliber; be wound with reinforcement wire on the steel pipe tube wall in external protection; this reinforcement wire can be the 1-3 layer; the present embodiment reinforcement wire number of plies shown in the drawings is 1 layer; the end Connecting format of steel pipe body adopts steel bell and spigot to connect; flange connect or directly weld wherein a kind of; present embodiment steel pipe shown in the drawings adopts the directly Connecting format of welding; innovative point of the present utility model is: be fixed with continuous spirality steel rib 1 on the steel pipe inboard wall of tube body, this steel rib is embedded in the protective layer of steel pipe inboard wall of tube body.
Spirality steel rib of the present utility model adopts the mode of continuous welding to be packed on the inwall of steel pipe body according to the actual demand of engineering.
Claims (4)
1. prestressing large-scale spiral fin steel tube; constitute by steel pipe body, protective layer, reinforcement wire; steel pipe inboard wall of tube body and outer wall are fixed with protective layer respectively; reinforcement wire is wrapped on the interior steel pipe tube wall of protective layer; it is characterized in that: be fixed with continuous spirality steel rib on the steel pipe inboard wall of tube body, this spirality steel rib is embedded in the protective layer of steel pipe inboard wall of tube body.
2. prestressing large-scale spiral fin steel tube according to claim 1 is characterized in that: described protective layer is complex fiber cement mortar or composite fiber concrete.
3. prestressing large-scale spiral fin steel tube according to claim 1 is characterized in that: the reinforcement wire on the described steel pipe tube wall that is wrapped in the protective layer is the 1-3 layer.
4. prestressing large-scale spiral fin steel tube according to claim 1 is characterized in that: the end Connecting format of described steel pipe body adopts steel bell and spigot connection, flange to connect or direct weld wherein a kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201442381U CN201339767Y (en) | 2008-12-10 | 2008-12-10 | Large prestressed spiral rib steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201442381U CN201339767Y (en) | 2008-12-10 | 2008-12-10 | Large prestressed spiral rib steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201339767Y true CN201339767Y (en) | 2009-11-04 |
Family
ID=41235313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201442381U Expired - Lifetime CN201339767Y (en) | 2008-12-10 | 2008-12-10 | Large prestressed spiral rib steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201339767Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749490B (en) * | 2008-12-10 | 2013-11-13 | 天津万联管道工程有限公司 | Prestressing large-scale spiral fin steel tube |
| CN104295814A (en) * | 2014-10-14 | 2015-01-21 | 南京联众建设工程技术有限公司 | Underground steel mixed structure pipeline with spiral composite reinforcing rings on inner wall and production method thereof |
| CN108506591A (en) * | 2018-04-28 | 2018-09-07 | 安徽砼宇特构科技有限公司 | A kind of concrete plug equipped with Hermetical connecting structure |
| CN108644486A (en) * | 2018-04-28 | 2018-10-12 | 安徽砼宇特构科技有限公司 | A kind of concrete plug equipped with clamping structure |
-
2008
- 2008-12-10 CN CNU2008201442381U patent/CN201339767Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749490B (en) * | 2008-12-10 | 2013-11-13 | 天津万联管道工程有限公司 | Prestressing large-scale spiral fin steel tube |
| CN104295814A (en) * | 2014-10-14 | 2015-01-21 | 南京联众建设工程技术有限公司 | Underground steel mixed structure pipeline with spiral composite reinforcing rings on inner wall and production method thereof |
| CN104295814B (en) * | 2014-10-14 | 2015-11-18 | 南京联众建设工程技术有限公司 | Underground steel and concrete structure pipeline of a kind of inner wall belt spiral compound stiffening ring and preparation method thereof |
| CN108506591A (en) * | 2018-04-28 | 2018-09-07 | 安徽砼宇特构科技有限公司 | A kind of concrete plug equipped with Hermetical connecting structure |
| CN108644486A (en) * | 2018-04-28 | 2018-10-12 | 安徽砼宇特构科技有限公司 | A kind of concrete plug equipped with clamping structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CNOOC Haohua Environmental Engineering Co., Ltd. Assignor: Tianjin Waterline Pipeline Engineering Co., Ltd. Contract record no.: 2011990001114 Denomination of utility model: Prestressing large-scale spiral fin steel tube Granted publication date: 20091104 License type: Exclusive License Record date: 20111226 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20091104 Effective date of abandoning: 20081210 |
|
| RGAV | Abandon patent right to avoid regrant |