CN201166199Y - Prestress steel tube - Google Patents
Prestress steel tube Download PDFInfo
- Publication number
- CN201166199Y CN201166199Y CNU2008200737643U CN200820073764U CN201166199Y CN 201166199 Y CN201166199 Y CN 201166199Y CN U2008200737643 U CNU2008200737643 U CN U2008200737643U CN 200820073764 U CN200820073764 U CN 200820073764U CN 201166199 Y CN201166199 Y CN 201166199Y
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- wall
- protective layer
- steel
- pipe
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 239000011241 protective layer Substances 0.000 claims description 22
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 9
- 239000003365 glass fiber Substances 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 6
- 230000002421 anti-septic effect Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model relates to a prestressed steel pipe, which comprises a pipe body, a protection layer on the outer wall of the pipe body and a lining layer on the inner wall of the pipe body, wherein a prestressed steel wire is wrapped on the outer wall of the pipe body in the protection layer. The utility model has the advantages of simple structure, scientific and reasonable design, thinner pipe wall, less steel consumption and lower cost, which is the prestressed steel pipe which has long use life and high antiseptic property.
Description
Technical field
The utility model relates to steel pipe, especially a kind of pre-stressed steel pipe.
Background technique
Steel pipe generally be applied in geographical environment do not allow to slot operation, construction environment require noise less traffic is not exerted an influence or the situation of the easy sedimentation in ground under.The steel pipe that is used for the discharge pressure fluid at present mainly adopts the steel plate of L175-L555 level (tensile strength is 175-555MPa) welding to make, because the yield strength of these common irons is lower, so when making the high steel pipe of compressive strength, the tube wall design of steel pipe is very thick.Pipeline with DN1800 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 14mm, every linear meter(lin.m.) pipe line steel material use quantity is 695Kg, though the steel pipe pipe thickness increases the purpose that can satisfy the discharge pressure fluid, but there are the following problems: 1. steel pipe tube wall thickening, the steel using amount that causes producing every steel pipe strengthens, and the cost of raw material raises; 2. steel pipe tube wall thickening causes steel pipe weight to strengthen, and the difficulty of transportation and construction strengthens; 3. the water pipe precaution layer is generally steel pipe coated inner wall corrosion resistant, high-abrasive material at present, its outer wall is provided with thermal insulation layer and protective layer, thermal insulation layer generally adopts polyurethane foaming or silicate and other thermal insulating material, protective layer generally adopts materials such as plastic tube or glass fibre reinforced plastics, its antiseptic property is relatively poor, directly cause steel pipe shorter working life, improved the cost of changing; Steel belong to highly energy-consuming, maximum discharge product in addition, and the increasing of use amount can cause the consumption of a large amount of consumption, the especially non-renewable resources of the energy, and do not meet the environmental protection policy of the energy-saving and emission-reduction that country advocates.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of simple in structure, and design science is reasonable, and tube wall is thinner, and steel using amount is less, and cost is lower, long service life and have the pre-stressed steel pipe of higher antiseptic property.
The utility model solves its technical problem and is achieved through the following technical solutions:
A kind of pre-stressed steel pipe is made of the protective layer of body, tube wall, the inside liner of inboard wall of tube body, wherein is wound with reinforcement wire on the tube wall in protective layer.
And the reinforcement wire that twines on the tube wall in the described protective layer is the 1-3 layer.
And described protective layer is glass fibre reinforced plastics or polyurethane, and described inside liner is polyurethane or glass fibre reinforced plastics.
Advantage of the present utility model and beneficial effect are:
1. this pre-stressed steel pipe is made of the protective layer of body and inside liner and tube wall; wherein the tube wall of this in protective layer is wound with reinforcement wire; under same operating conditions; the tube wall of this steel pipe is thinner; be about 2/5 of common steel tube steel using amount,, saved the cost of raw material greatly in iron and steel price growing today; improved economic benefit, and the use amount that reduces highly energy-consuming, maximum discharge product meets the environmental protection policy of the energy-saving and emission-reduction that country advocates.
2. this pre-stressed steel pipe outer wall is wound with reinforcement wire, strengthen whole tubing greatly and resisted the ability of external pressure earthing and internal water pressure, under equal external pressure earthing and internal water pressure situation, make the wall thickness attenuation of overall die, alleviate the weight of whole tubing, reduce pre-stressed steel pipe integral construction cost and difficulty of construction.
This pre-stressed steel pipe body two ends of extending protective layer except can adopt be welded to connect, 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.
4. the inside liner of this pre-stressed steel pipe, outer wall protective layer are respectively one of them of glass fibre reinforced plastics protective layer and/or polyurethane protective layer; improved the whole antiseptic property of this tubing; prolong the working life of steel pipe, and can effectively reduce the inner-walls of duct resistance, reduced whole running cost.
5. the utility model is simple in structure, and design science is reasonable, and tube wall is thinner, and steel using amount is less, and cost is lower, long service life and have the pre-stressed steel pipe of higher antiseptic property.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to the cross section enlarged view;
Fig. 3 is that the B-B of Fig. 1 is to the cross section enlarged 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 pre-stressed steel pipe, its body 2 is the steel body, at the coaxial inside liner 1 that is fixed with of the inwall of body, this inside liner adopts glass fibre reinforced plastics or polyurethane material to make; At the coaxial protective layer 4 that is fixed with of the outer wall of body, this protective layer adopts polyurethane or glass fibre reinforced plastics.Generally speaking, the material that inside liner and protective layer adopted is different, adopts glass fibre reinforced plastics as inside liner, and protective layer adopts polyurethane.Be wound with reinforcement wire 3 on this tube wall in protective layer, the reinforcement wire that is twined is the 1-3 layer, and the present embodiment accompanying drawing is depicted as one deck.
In the present embodiment, be the extension part 5 of body at the body two ends of extending protective layer and inside liner, this extension part is used for coaxial steel bell and spigot or the flange of installing to realize the connection between the tubing.
The utility model is compared saving rolled steel dosage 43.2% with common steel tube under same operating conditions.Steel pipe with DN1800mm is that example is specifically narrated below:
Operating conditions is: working pressure 0.6MPa, thickness of earth-fill cover 2m;
The required steel plate thickness of common steel tube is 14mm at least, and every linear meter(lin.m.) pipe line steel material use quantity is 695Kg;
The steel plate thickness of pre-stressed steel pipe is 6mm at the most, and it is 1570MPa φ 5 steel wires that steel wire adopts tensile strength, is that 10mm is wrapped in outer wall of steel pipe with pitch, twines one deck, and rolled steel dosage is: steel plate 297Kg, steel wire 98Kg amounts to 395Kg.
Claims (3)
1. a pre-stressed steel pipe is made of the protective layer of body, tube wall, the inside liner of inboard wall of tube body, it is characterized in that: be wound with reinforcement wire on the tube wall in protective layer.
2. pre-stressed steel pipe according to claim 1 is characterized in that: the reinforcement wire that twines on the tube wall in the described protective layer is the 1-3 layer.
3. pre-stressed steel pipe according to claim 1 is characterized in that: described protective layer is glass fibre reinforced plastics or polyurethane, and described inside liner is polyurethane or glass fibre reinforced plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200737643U CN201166199Y (en) | 2008-01-28 | 2008-01-28 | Prestress steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200737643U CN201166199Y (en) | 2008-01-28 | 2008-01-28 | Prestress steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201166199Y true CN201166199Y (en) | 2008-12-17 |
Family
ID=40191587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200737643U Expired - Fee Related CN201166199Y (en) | 2008-01-28 | 2008-01-28 | Prestress steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201166199Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498384B (en) * | 2008-01-28 | 2012-01-04 | 天津万联管道工程有限公司 | Prestress steel pipe |
-
2008
- 2008-01-28 CN CNU2008200737643U patent/CN201166199Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498384B (en) * | 2008-01-28 | 2012-01-04 | 天津万联管道工程有限公司 | Prestress steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20120128 |