CN109086535A - A kind of multiple tube strength design - Google Patents
A kind of multiple tube strength design Download PDFInfo
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- CN109086535A CN109086535A CN201810909750.9A CN201810909750A CN109086535A CN 109086535 A CN109086535 A CN 109086535A CN 201810909750 A CN201810909750 A CN 201810909750A CN 109086535 A CN109086535 A CN 109086535A
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- multiple tube
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/14—Pipes
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- Evolutionary Computation (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of multiple tube strength designs, include the following steps: step 1) multiple tube enhancement layer Intensity Design, step 2) composite pipe lining layer Intensity Design, step 3) multiple tube external coating Intensity Design, the beneficial effects of the present invention are: respectively to the enhancement layer of multiple tube, the intensity of liner layer and external coating carries out calculating design, and the corresponding calculation formula of matching design, it can be quick, efficiently, design effectively accurately is carried out to multiple tube, and design structure is close with experimental result, this method is effectively reduced the error in design, it ensure that the precision in multiple tube design process.
Description
Technical field
The present invention relates to pipe fitting Intensity Design technical fields, and in particular to a kind of multiple tube strength design.
Background technique
Multiple tube Strength co-mputation is calculated according to force balancing method at present, and formula is simultaneously uncomplicated, but error compared with
Greatly, with the increase of the enhancing number of plies, error is increasing.The thermoplastic of enhancing or steel wire winding enhancing is wound for continuous fiber
Property multiple tube, its intensity is calculated using the method for simpler science, facilitate produced using lower cost it is full
The multiple tube of sufficient requirement.
Summary of the invention
Aiming at the problems existing in the prior art, it is calculated simply the purpose of the present invention is to provide a kind of, accuracy rate is high
Multiple tube strength design.
Technical scheme is as follows:
A kind of multiple tube strength design, which comprises the steps of:
Step 1) multiple tube enhancement layer Intensity Design calculates multiple tube enhancement layer intensity according to following formula:
Wherein σcFor enhancement layer reinforcing material tensile strength,
r1、rn+1Respectively enhancement layer inside radius and outer radius,
θ is winding angle；
Step 2) composite pipe lining layer Intensity Design calculates composite pipe lining layer intensity according to following formula:
Wherein MRS1Minimum for liner layer material requires hydrostatic strength,
C1For the master-plan coefficient of liner layer material,
dnFor liner layer outer diameter,
enFor liner layer thickness；
Step 3) multiple tube external coating Intensity Design calculates multiple tube external coating intensity according to following formula:
Wherein MRS2Minimum for external coating material requires hydrostatic strength,
C2For the master-plan coefficient of external coating material,
dmFor external coating outer diameter,
emFor external coating thickness；
Step 4) according to step 1), 2), 3) obtain the intensity of multiple tube are as follows: p=pc+pn+pm。
A kind of multiple tube strength design, which is characterized in that the winding angle 0- of the multiple tube enhancement layer
57°。
A kind of multiple tube strength design, which is characterized in that the multiple tube enhancement layer winding when according to
Winding angle carries out a positive and a negative winding.
A kind of multiple tube strength design, which is characterized in that the intensity size of the multiple tube is at least multiple
Close 3 times of pipe operating pressure.
The beneficial effects of the present invention are: being counted respectively to the intensity of the enhancement layer of multiple tube, liner layer and external coating
Design, and the corresponding calculation formula of matching design are calculated, design effectively quickly, efficiently, accurately can be carried out to multiple tube, and set
Meter structure is close with experimental result, and this method is effectively reduced the error in design, ensure that in multiple tube design process
Precision.
Specific embodiment
Further supplementary explanation is made to the present invention referring to embodiment.
A kind of multiple tube strength design, includes the following steps:
A. multiple tube enhancement layer Intensity Design: multiple tube enhancement layer Intensity Design is calculated according to following formula:
Wherein σcFor enhancement layer reinforcing material tensile strength,
r1、rn+1Respectively enhancement layer inside radius and outer radius,
θ is winding angle；
0-57 ° of winding angle of multiple tube enhancement layer, a positive and a negative winding is carried out according to the angle form of ± θ when winding.
B. composite pipe lining layer Intensity Design: composite pipe lining layer Intensity Design is calculated according to following formula:
Wherein MRS1Minimum for liner layer material requires hydrostatic strength,
C1For the master-plan coefficient of liner layer material,
dnFor liner layer outer diameter,
enFor liner layer thickness,
The minimum thickness of liner layer thickness requires to can refer to associated plastic pipeline national standard.
C. multiple tube external coating Intensity Design: multiple tube external coating Intensity Design is calculated according to following formula:
Wherein MRS2Minimum for external coating material requires hydrostatic strength,
C2For the master-plan coefficient of external coating material,
dmFor external coating outer diameter,
emFor external coating thickness, the minimum thickness of external coating thickness requires to can refer to associated plastic pipeline country mark
It is quasi-.
The overall strength of multiple tube is multiple tube enhancement layer intensity, composite pipe lining layer intensity, multiple tube external coating three
Summation, it may be assumed that p=pc+pn+pm, which is at least 3 times of multiple tube operating pressure, guarantees the normal work of multiple tube.
Embodiment 1:
In the present embodiment, a kind of multiple tube strength design disclosed by the invention, including three steps: multiple tube increases
Strong layer Intensity Design；Composite pipe lining layer Intensity Design；Multiple tube external coating Intensity Design.
Multiple tube operating pressure applied to pipelines for collection and transfer of petroleum is 6MPa, its burst strength needs are more than when design
18MPa, liner use heat-proof polythene PERT, and enhancement layer is that glass fiber winding enhances PERT, and outer layer is high density polyethylene (HDPE)
PE100, multiple tube enhancement layer winding layer number selects 4 layers, thickness in monolayer 0.3mm when design, and winding angle is 57 ° (certain
The bigger intensity of winding angle is bigger in range, and be maximized 57 ° here), enhancement layer fiber quality content is 60% (enhancing
The more high-intensitive layer fiber quality content the bigger, comprehensively considers and selects here 60%), composite pipe lining thickness degree is according to national standard
It is required that minimum can be 4.5mm, multiple tube external coating can be 2.5mm (wherein liner layer, outsourcing according to national standard thickness minimum
The thickness of coating considers that cost problem selects the lower value in national standard as far as possible in design, guarantees also to guarantee while economic benefit
The intensity of the inside and outside layer of multiple tube), compound pipe outside diameter is 75mm (i.e. external coating outer diameter).According to the above parameter and of the invention
The design formula provided, calculating the multiple tube its burst strength can reach about 28MPa, and experimental result 26.8MPa meets
The minimum design requirement of 18MPa.
Embodiment 2:
In the present embodiment, a kind of multiple tube strength design disclosed by the invention, including three steps: multiple tube increases
Strong layer Intensity Design；Composite pipe lining layer Intensity Design；Multiple tube external coating Intensity Design.
Multiple tube operating pressure applied to pipelines for collection and transfer of petroleum is 6MPa, its burst strength needs are more than when design
18MPa, liner use heat-proof polythene PERT, and enhancement layer is that steel wire winding enhances PERT, and outer layer is high density polyethylene (HDPE)
PE100, multiple tube enhancement layer winding layer number selects 2 layers, thickness in monolayer 1.25mm when design, and winding angle is 57 ° of (multiple tubes
Intensity depends on the intensity of enhancement layer, and when design improves enhancement layer intensity as far as possible, comprehensively considers the maximum winding angle of selection
The intensity of enhancement layer is improved for 57 °), every layer of steel wire of enhancement layer is 40, a diameter of 0.8mm, and (enhancement layer steel wire quantity is got over
More, diameter is bigger, and intensity is higher, and comprehensively considering every layer of steel wire of selection here is 40, a diameter of 0.8mm), in multiple tube
Liner layer thickness is 5mm, multiple tube external coating with a thickness of 2.5mm (wherein liner layer, external coating thickness consider in design
Cost problem selects the lower value in national standard as far as possible, guarantees also to guarantee multiple tube intensity while economic cost), compound pipe outside diameter
For 75mm.According to above-mentioned Known designs parameter and design formula, calculating multiple tube its burst strength can reach about 20MPa, real
Testing result is 19.2MPa, meets the minimum design requirement of 18MPa.
The embodiment of the present invention is illustrated above, but the present invention is not limited to the above embodiments, it can be in right
It is changed in the range of it is required that, if the change made under the inspiration of technical solution of the present invention, substitution, combination, simplification, and it is not real
The change of matter, without departing substantially from technical principle and inventive concept of the invention, belongs to this as long as meeting goal of the invention of the invention
The protection scope of invention.
Claims (4)
1. a kind of multiple tube strength design, which comprises the steps of:
Step 1) multiple tube enhancement layer Intensity Design calculates multiple tube enhancement layer intensity according to following formula:
Wherein σcFor enhancement layer reinforcing material tensile strength,
r1、rn+1Respectively enhancement layer inside radius and outer radius,
θ is winding angle；
Step 2) composite pipe lining layer Intensity Design calculates composite pipe lining layer intensity according to following formula:
Wherein MRS1Minimum for liner layer material requires hydrostatic strength,
C1For the master-plan coefficient of liner layer material,
dnFor liner layer outer diameter,
enFor liner layer thickness；
Step 3) multiple tube external coating Intensity Design calculates multiple tube external coating intensity according to following formula:
Wherein MRS2Minimum for external coating material requires hydrostatic strength,
C2For the master-plan coefficient of external coating material,
dmFor external coating outer diameter,
emFor external coating thickness；
Step 4) according to step 1), 2), 3) obtain the intensity of multiple tube are as follows: p=pc+pn+pm。
2. a kind of multiple tube strength design according to claim 1, which is characterized in that the multiple tube enhancement layer
Winding angle is 0-57 °.
3. a kind of multiple tube strength design according to claim 1 or 2, which is characterized in that the multiple tube enhancing
Layer, according to winding angle, carries out a positive and a negative winding in winding.
4. a kind of multiple tube strength design according to claim 1, which is characterized in that the intensity of the multiple tube is big
It is small to be at least 3 times of multiple tube operating pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909750.9A CN109086535B (en) | 2018-08-10 | 2018-08-10 | Composite pipe strength design method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909750.9A CN109086535B (en) | 2018-08-10 | 2018-08-10 | Composite pipe strength design method |
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| Publication Number | Publication Date |
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| CN109086535A true CN109086535A (en) | 2018-12-25 |
| CN109086535B CN109086535B (en) | 2022-11-11 |
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Citations (5)
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| CN104089110A (en) * | 2014-07-21 | 2014-10-08 | 江苏华神特种橡胶制品股份有限公司 | Ferruled rubber pipe capable of being used for dynamic measurement |
| CN105109076A (en) * | 2015-07-31 | 2015-12-02 | 武汉理工大学 | Design and preparation method for composite material tube with large bending deflection |
| CN106503303A (en) * | 2016-09-29 | 2017-03-15 | 中国石油天然气集团公司 | A kind of composite strengthens metallic conduit design pressure computational methods |
| CN107368666A (en) * | 2017-08-25 | 2017-11-21 | 揭阳市美度实业有限公司 | The design and fabrication method of condenser brazing layer and D type header composite constructions |
| CN107766644A (en) * | 2017-10-18 | 2018-03-06 | 深圳中海海洋工程股份有限公司 | A kind of design method of thermoplasticity fiberglass reinforced flexible pipe |
-
2018
- 2018-08-10 CN CN201810909750.9A patent/CN109086535B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089110A (en) * | 2014-07-21 | 2014-10-08 | 江苏华神特种橡胶制品股份有限公司 | Ferruled rubber pipe capable of being used for dynamic measurement |
| CN105109076A (en) * | 2015-07-31 | 2015-12-02 | 武汉理工大学 | Design and preparation method for composite material tube with large bending deflection |
| CN106503303A (en) * | 2016-09-29 | 2017-03-15 | 中国石油天然气集团公司 | A kind of composite strengthens metallic conduit design pressure computational methods |
| CN107368666A (en) * | 2017-08-25 | 2017-11-21 | 揭阳市美度实业有限公司 | The design and fabrication method of condenser brazing layer and D type header composite constructions |
| CN107766644A (en) * | 2017-10-18 | 2018-03-06 | 深圳中海海洋工程股份有限公司 | A kind of design method of thermoplasticity fiberglass reinforced flexible pipe |
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| CN109086535B (en) | 2022-11-11 |
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Effective date of registration: 20190722 Address after: 317000 No. 6 Qianjiang South Road, Dayang Street, Linhai City, Taizhou City, Zhejiang Province Applicant after: Linhai Weixing New Building Materials Co.,Ltd. Address before: 317000 Baiye Middle Road, Linhai Economic Development Zone, Taizhou City, Zhejiang Province Applicant before: ZHEJIANG WEIXING NEW BUILDING MATERIALS Co.,Ltd. |
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