CN103440381B - A kind of compensation design method of high temperature air pipeline - Google Patents
A kind of compensation design method of high temperature air pipeline Download PDFInfo
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- CN103440381B CN103440381B CN201310382006.5A CN201310382006A CN103440381B CN 103440381 B CN103440381 B CN 103440381B CN 201310382006 A CN201310382006 A CN 201310382006A CN 103440381 B CN103440381 B CN 103440381B
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Abstract
A kind of compensation design method of high temperature air pipeline, UG NX business software is used to arrange under module at its machinery pipeline, set up a pipeline geometric model comprising 7 kinds of mathematical variables, by finite element analysis software ANSYS, carry out pre-treatment, material parameter is given by GH536, wherein elastic modulus E=187GPa, Poisson's ratio μ=0.3, use boundary condition to apply displacement boundary conditions and temperature field load, be calculated the stress situation of pipeline, adjust pipeline deposition path, again calculate by 2～4 contents, obtain new result of calculation；Maximum stress value is more than 1.5 less than the yield limit of material, yield strength reserve factor, meets design requirement.Advantages of the present invention: the compensation design method of high temperature air pipeline of the present invention, designs high temperature air pipeline, improves the reasonability of design, it is ensured that high temperature air pipeline meets engine long life-span and high reliability.
Description
Technical field
The present invention relates to aero-engine piping system design field, particularly to a kind of high temperature
The compensation design method of air pipe line.
Background technology
In terms of the fault statistics data of home and abroad aircraft and aero-engine, due to exterior line
The fault that inefficacy and adnexa problem cause constitutes about more than half of total failare, is in structure failure
First of, it is seen that the Reliable Design of exterior line is most important to flight safety.
The extraneous air pipeline in engine high-temperature district, the most i.e. subjects aerodynamic loading, again
The alternate stress comprehensive function that bearing temperature change and engine luggine cause, working condition is very
Badly, easily because of the deformation of pipeline Yu casing, produce fatigue rupture.Owing to temperature becomes
Change the pipeline caused with casing linear expansion and rigidly fix the thermal stress at place, pipeline self can be improved
Stress collection neutralize reduce pipeline fatigue limit.And the margin of safety coefficient of pipeline and its tired pole
Limit is directly proportional, the reduction of fatigue limit, necessarily causes the decline of margin of safety coefficient, thus shadow
Ring the functional reliability to pipeline and life-span.
At present, aero-engine high temperature air pipeline traditional design method, mainly based on experience,
With reference to external ripe pipeline structure form in version, lack the design side of high temperature conduit
Method and the appraisal procedure of the thermal deformation coordination ability.This causes the pipeline of design to occur that two aspects are asked
Topic:
One, thermal compensation scarce capacity.Have impact on the life-span of pipeline, it is impossible to meet making of electromotor
With requiring, even affect the safety of electromotor；
Two, thermal compensation ability is superfluous.The deformation of pipeline natural resiliency is used to carry out the structure of thermal compensation
Design, compensation ability surplus can cause pipeline to increase unnecessary weight, take up room excessive,
Impact around other adnexa and pipeline, the layout of cable；In conduit, medium flow resistance loss is also simultaneously
Can increase accordingly, engine performance is produced impact.
At present, not yet someone carries to use the deformation of pipeline natural resiliency to carry out the method for designing of thermal compensation
Went out.
Summary of the invention
It is an object of the invention to reduce the stress level of aero-engine high temperature air pipeline, spy carries
Supply a kind of compensation design method of high temperature air pipeline.
The invention provides a kind of compensation design method of high temperature air pipeline, its feature exists
In: the compensation design method of described high temperature air pipeline, use UG NX business software
Arrange under module at its machinery pipeline, set up a pipeline geometry mould comprising 7 kinds of mathematical variables
Type (see figure 1), saves as * .prt formatted file；The definition of each mathematical variable is shown in Table 1；
The form translation function utilizing UG NX software generates * .x_t formatted file；
Utilize finite element analysis software ANSYS to call * .x_t file, generate * .db formatted file；
Read * .db formatted file by finite element analysis software ANSYS, carry out pre-treatment,
Material parameter is given by GH536, wherein elastic modulus E=187GPa, Poisson's ratio μ=0.3, line
The coefficient of expansion is shown in Table 2, then use boundary condition listed by table 3 apply displacement boundary conditions and
Temperature field load, is calculated the stress situation of pipeline, is shown in Table 4；
The linear expansion coefficient of table 2 material 0Cr18Ni9
| θ/℃ | 20～100 | 20～200 | 20～300 | 20～400 | 20～500 | 20～600 | 20～700 |
| α/10-6℃-1 | 12.1 | 12.5 | 13.4 | 14.0 | 14.3 | 14.8 | 15.5 |
Table 3 boundary condition
Table 4 pipeline stress value and yield strength reserve factor
As shown in Table 4, the maximum stress of pipeline has exceeded the yield limit of material, this kind of pipeline
The layout in path is unsatisfactory for requirement；Accordingly, it would be desirable to each mathematical variable is adjusted；At pipeline
In the case of starting point, final position and conduit diameter determine, following variable need to be adjusted:
The bending quantity of conduit, K value
Guiding-tube bend angle, A value
Length of straigh line between adjacent two bent angles, L-value；
After having adjusted pipeline deposition path, again calculate by 2～4 contents, obtain new
Result of calculation, be shown in Table 5；
Table 5 pipeline stress value and yield strength reserve factor
Pipeline maximum stress value is less than the yield limit of material, and yield strength reserve factor is more than
1.5, meet design requirement.
Advantages of the present invention:
The compensation design method of high temperature air pipeline of the present invention, designs high temperature air pipe
Road, improves the reasonability of design, it is ensured that high temperature air pipeline meets engine long life-span and Gao Ke
By property.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation:
Fig. 1 is pipeline geometric model schematic diagram；
Fig. 2 is design flow diagram；
Fig. 3 is pipeline FEM (finite element) model schematic diagram.
Detailed description of the invention
Embodiment 1
The invention provides a kind of compensation design method of high temperature air pipeline, its feature exists
In: the compensation design method of described high temperature air pipeline, use UG NX business software
Arrange under module at its machinery pipeline, set up a pipeline geometry mould comprising 7 kinds of mathematical variables
Type (see figure 1), saves as * .prt formatted file；The definition of each mathematical variable is shown in Table 1；
The form translation function utilizing UG NX software generates * .x_t formatted file；
Utilize finite element analysis software ANSYS to call * .x_t file, generate * .db formatted file；
Read * .db formatted file by finite element analysis software ANSYS, carry out pre-treatment,
Material parameter is given by GH536, wherein elastic modulus E=187GPa, Poisson's ratio μ=0.3, line
The coefficient of expansion is shown in Table 2, then use boundary condition listed by table 3 apply displacement boundary conditions and
Temperature field load, is calculated the stress situation of pipeline, is shown in Table 4；
The linear expansion coefficient of table 2 material 0Cr18Ni9
| θ/℃ | 20～100 | 20～200 | 20～300 | 20～400 | 20～500 | 20～600 | 20～700 |
| α/10-6℃-1 | 12.1 | 12.5 | 13.4 | 14.0 | 14.3 | 14.8 | 15.5 |
Table 3 boundary condition
Table 4 pipeline stress value and yield strength reserve factor
As shown in Table 4, the maximum stress of pipeline has exceeded the yield limit of material, this kind of pipeline
The layout in path is unsatisfactory for requirement；Accordingly, it would be desirable to each mathematical variable is adjusted；At pipeline
In the case of starting point, final position and conduit diameter determine, following variable need to be adjusted:
The bending quantity of conduit, K value
Guiding-tube bend angle, A value
Length of straigh line between adjacent two bent angles, L-value；
After having adjusted pipeline deposition path, again calculate by 2～4 contents, obtain new
Result of calculation, be shown in Table 5；
Table 5 pipeline stress value and yield strength reserve factor
Pipeline maximum stress value is less than the yield limit of material, and yield strength reserve factor is more than
1.5, meet design requirement.
Claims (1)
1. the compensation design method of a high temperature air pipeline, it is characterised in that: described height
The compensation design method of warm air pipeline, uses UG NX business software at its machinery pipeline
Arrange under module, set up a pipeline geometric model comprising 7 kinds of mathematical variables, save as * .prt
Formatted file；The definition of each mathematical variable is shown in Table 1；
The form translation function utilizing UG NX software generates * .x_t formatted file；
Utilize finite element analysis software ANSYS to call * .x_t file, generate * .db formatted file；
Read * .db formatted file by finite element analysis software ANSYS, carry out pre-treatment,
Material parameter is given by GH536 alloy, wherein elastic modulus E=187GPa, Poisson's ratio μ
=0.3, linear expansion coefficient is shown in Table 2, then uses the boundary condition listed by table 3 to apply displacement limit
Boundary's condition and temperature field load, be calculated the stress situation of pipeline, be shown in Table 4；
The linear expansion coefficient of table 2 material OCr18Ni9
Table 3 boundary condition
Table 4 pipeline stress value and yield strength reserve factor
As shown in Table 4, the maximum stress of pipeline has exceeded the yield limit of material, this kind of pipeline
The layout in path is unsatisfactory for requirement；Accordingly, it would be desirable to each mathematical variable is adjusted；At pipeline
In the case of starting point, final position and conduit diameter determine, following variable need to be adjusted:
The bending quantity of conduit, K value
Guiding-tube bend angle, A value
Length of straigh line between adjacent two bent angles, L-value；
After having adjusted pipeline deposition path, again calculate by the content of table 2～4, obtain
New result of calculation, is shown in Table 5；
Table 5 pipeline stress value and yield strength reserve factor
Pipeline maximum stress value is more than 1.5 less than the yield limit of material, yield strength reserve factor,
Meet design requirement.
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| CN201310382006.5A CN103440381B (en) | 2013-08-28 | 2013-08-28 | A kind of compensation design method of high temperature air pipeline |
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| CN103440381A CN103440381A (en) | 2013-12-11 |
| CN103440381B true CN103440381B (en) | 2016-08-10 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108959822B (en) * | 2018-08-01 | 2023-06-06 | 中国航空工业集团公司沈阳飞机设计研究所 | Design method for reducing internal thermal stress effect of thermal structure |
| CN110489825A (en) * | 2019-07-30 | 2019-11-22 | 中国航发沈阳发动机研究所 | A kind of Compensation Design method of big orifice class air pipe line |
Citations (5)
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| CN101782340A (en) * | 2009-01-15 | 2010-07-21 | 王智慧 | Multi-stage type high-efficiency bellows waste heat recovery device |
| CN202836269U (en) * | 2012-09-06 | 2013-03-27 | 江苏天舒电器有限公司 | Novel thermal compensation transfer heat exchanger and heat pump water heater comprising the same |
| CN103103343A (en) * | 2013-02-27 | 2013-05-15 | 新兴能源装备股份有限公司 | Thermal-insulating, oxidizing and cooling device used in vanadium extraction from stone coal and using method of device |
| CN103123025A (en) * | 2011-11-21 | 2013-05-29 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature pipeline sealing structure capable of axial expansion |
| CN203052829U (en) * | 2013-01-31 | 2013-07-10 | 兰州天歌科技工程设备有限责任公司 | Solar heat collection and electrical compensation heat supplying system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5269748B2 (en) * | 2009-11-05 | 2013-08-21 | 本田技研工業株式会社 | Overheat protection device |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782340A (en) * | 2009-01-15 | 2010-07-21 | 王智慧 | Multi-stage type high-efficiency bellows waste heat recovery device |
| CN103123025A (en) * | 2011-11-21 | 2013-05-29 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature pipeline sealing structure capable of axial expansion |
| CN202836269U (en) * | 2012-09-06 | 2013-03-27 | 江苏天舒电器有限公司 | Novel thermal compensation transfer heat exchanger and heat pump water heater comprising the same |
| CN203052829U (en) * | 2013-01-31 | 2013-07-10 | 兰州天歌科技工程设备有限责任公司 | Solar heat collection and electrical compensation heat supplying system |
| CN103103343A (en) * | 2013-02-27 | 2013-05-15 | 新兴能源装备股份有限公司 | Thermal-insulating, oxidizing and cooling device used in vanadium extraction from stone coal and using method of device |
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