CN106529014B - Centrifugal compressor impeller stress analysis method and system - Google Patents
Centrifugal compressor impeller stress analysis method and system Download PDFInfo
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Abstract
The invention relates to the field of manufacturing of centrifugal compressors and discloses a centrifugal compressorA compressor impeller stress analysis method and a system thereof are characterized in that closed impeller stress analysis data are obtained, wherein the stress analysis data comprise a ternary impeller series and a binary impeller series, and according to a formula α, Smax/(U2)2＊100, analyzing data of the impeller stress, and calculating a mapping relation between the highest stress and the outer edge linear speed; and analyzing and evaluating the mechanical property of the impeller according to the mapping relation between the highest stress and the linear speed of the outer edge. The invention abstracts the mechanical characteristics of the impeller structure of the centrifugal compressor, and can obtain the stress conditions of a series of impellers by looking up the mapping relation, thereby reducing the time consumed by stress analysis and improving the efficiency.
Description
Technical Field
The invention relates to the field of manufacturing of centrifugal compressors, in particular to a centrifugal compressor impeller stress analysis method and system.
Background
The impeller is a core part in the centrifugal compressor, and the safe operation of the impeller is an important guarantee for the overall reliability of the centrifugal compressor. According to the statistics of authorities, over half of the centrifugal compressor failures are caused by impeller failures worldwide, so that the mechanical characteristics of the impeller are required to be accurately evaluated in the design stage in order to ensure the safe and reliable operation of the impeller. In the prior art, a finite element analysis method is generally adopted to evaluate the mechanical properties of the impeller, and the finite element analysis method has many limitations, such as: a large amount of repetitive work exists in the design stage, particularly, analyzed impeller data cannot be reused, analysis is often carried out again due to different operation conditions, and therefore the work efficiency is greatly reduced. The technical problem to be solved urgently is to seek to simplify the impeller stress analysis method.
Disclosure of Invention
The invention provides a centrifugal compressor impeller stress analysis method, which solves the technical problems that a finite element analysis method is adopted to evaluate the mechanical property repeatability analysis of an impeller and the working efficiency is low in the prior art.
The purpose of the invention is realized by the following technical scheme:
a centrifugal compressor impeller stress analysis method, comprising:
acquiring closed impeller stress analysis data, wherein the stress analysis data comprises the highest stress and the current outer edge linear velocity respectively corresponding to a ternary impeller series and a binary impeller series;
according to the formula α Smax/(U2)2100 and the impeller stress analysis data, and calculating a mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients, wherein α is the stress coefficient, Smax is the highest stress, and U2 is the outer edge linear velocity;
and analyzing and evaluating the mechanical property of the impeller according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients.
A centrifugal compressor impeller stress analysis system comprising:
the system comprises an acquisition module, a processing module and a control module, wherein the acquisition module is used for acquiring closed impeller stress analysis data, and the stress analysis data comprises the highest stress and the current outer edge linear velocity respectively corresponding to a ternary impeller series and a binary impeller series; (ii) a
A first calculating module for calculating Smax/(U2) according to formula α2100 and the impeller stress analysis data, and calculating a mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients, wherein α is the stress coefficient, Smax is the highest stress, and U2 is the outer edge linear velocity;
and the analysis module is used for analyzing and evaluating the mechanical property of the impeller according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients.
The invention provides a centrifugal compressor impeller stress analysis method and system, which are characterized in that closed impeller stress analysis data are obtained, the stress analysis data comprise a ternary impeller series and a binary impeller series, and according to a formula α, Smax/(U2)2100 and the impeller stress analysis data, and calculating the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients; mapping relation between highest stress and outer edge linear velocity under different stress coefficientsThe mechanical property of the impeller is analyzed and evaluated. The invention abstracts the mechanical characteristics of the impeller structure of the centrifugal compressor, and can obtain the stress conditions of a series of impellers by looking up the mapping relation, thereby reducing the time consumed by stress analysis and improving the efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart of a centrifugal compressor impeller stress analysis method according to an embodiment of the present invention;
FIG. 2 is a statistical graph of T4 impeller stress according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a centrifugal compressor impeller stress analysis system according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, a flow chart of a centrifugal compressor impeller stress analysis method is provided, which includes:
101, acquiring closed impeller stress analysis data, wherein the stress analysis data comprises equivalent stress and current outer edge linear velocity respectively corresponding to a ternary impeller series and a binary impeller series;
step 102, Smax/(U2) according to formula α2100 and the impeller stress analysis data, and calculating a mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients, wherein α is the stress coefficient, Smax is the highest stress, and U2 is the outer edge linear velocity;
and 103, analyzing and evaluating the mechanical property of the impeller according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients.
Wherein, this process may further include:
obtaining a yield limit according to the type of the material and the corresponding relation between the material and the yield limit;
and calculating the maximum outer edge linear velocity of the impeller according to the yield limit and the mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients.
Step 103 may specifically include:
103-1, if the outer edge linear speed of the impeller is known, inquiring whether a certain material type is available according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients and the outer edge linear speed of the impeller;
and/or the presence of a gas in the gas,
and 103-2, if the material type of the impeller is known, inquiring the maximum outer edge linear velocity corresponding to the material type according to the mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients and the material type.
For example: when the intersection point of the ordinate corresponding to the linear velocity of the outer edge and the quadratic curve is below the yield limit of a certain material, the material can be adopted; conversely, a material cannot be used when the intersection point is above the yield limit of the material. Similarly, the maximum peripheral linear velocity corresponding to a certain material can be determined according to the method, for example, four thick transverse lines shown in fig. 2 are commonly used four material lines, and the ordinate of the intersection point of the material line and the quadratic curve is the maximum peripheral linear velocity corresponding to the material.
In one embodiment, the impeller comprises in weight percent C: 0.2-0.3, Cr: 10-15, Co: 5-8, Mo: 8-10, Al: 0.5-1, Ti: 1-2, B: 0.003-0.005, Ca: 1.0-1.5, and the balance of Ni and unavoidable impurities. In one embodiment, the impeller comprises in weight percent C: 0.25, Cr: 12, Co: 6, Mo: 9, Al: 0.6, Ti: 1.5, B: 0.004, Ca: 1.2 and the balance of Ni and unavoidable impurities. In another embodiment, the impeller comprises in weight percent C: 0.3, Cr: 13, Co: 7, Mo: 10, Al: 0.7, Ti: 2, B: 0.005, Ca: 1.3 and the balance of Ni and unavoidable impurities. In another embodiment, the impeller comprises in weight percent C: 0.3, Cr: 14, Co: 8, Mo: 9, Al: 0.9, Ti: 2, B: 0.005, Ca: 1.5 and the balance of Ni and unavoidable impurities. In the above embodiment, the impeller has better corrosion resistance (corrosion rate <0.001) and longer service life than the impeller in the prior art.
The invention provides a centrifugal compressor impeller stress analysis method, which comprises the steps of obtaining closed impeller stress analysis data, wherein the stress analysis data comprise a ternary impeller series and a binary impeller series, and according to a formula α Smax/(U2)2100 and the impeller stress analysis data, and calculating the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients; and analyzing and evaluating the mechanical property of the impeller according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients. The invention abstracts the mechanical characteristics of the impeller structure of the centrifugal compressor, and can obtain the stress conditions of a series of impellers by looking up the mapping relation, thereby reducing the time consumed by stress analysis and improving the efficiency.
Fig. 2 is a statistical graph of T4 impeller stress during practical use, where different curves represent impellers on different drawings, and the drawing numbers and the outer diameters of the impellers are marked on the right. The four solid horizontal black lines in the figure represent the yield limits of the different materials, listing several materials commonly used for impellers. The black dots in the graph represent the maximum peripheral speed of the impeller in the impeller, i.e., the calculated rotational speed in the corresponding impeller stress analysis report.
In the embodiment of the invention, the statistical map (the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients) has two using methods, the first method is to quickly inquire the corresponding highest stress value according to the peripheral speed of the impeller, so that the material selection is convenient; the second is to quickly inquire the highest peripheral speed which can be achieved by the impeller under the material according to the material line in the map, and can provide reference for product quotation.
Fig. 3 is a schematic structural diagram of a centrifugal compressor impeller stress analysis system, including:
an obtaining module 310, configured to obtain closed impeller stress analysis data, where the stress analysis data includes a ternary impeller series and a binary impeller series;
a first calculating module 320 for calculating Smax/(U2) according to the formula α ═ Smax-2100 and the impeller stress analysis data, and calculating a mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients, wherein α is the stress coefficient, Smax is the highest stress, and U2 is the outer edge linear velocity;
and the analysis module 330 is configured to analyze and evaluate the mechanical property of the impeller according to the mapping relationship between the highest stress and the outer edge linear velocity under different stress coefficients.
The device further comprises a second calculating module 340, configured to obtain the yield limit according to the material type and the corresponding relationship between the material and the yield limit; and calculating the maximum outer edge linear velocity in the impeller according to the yield limit and the mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients.
An analysis module 330, comprising:
the material query unit 331 is configured to, when the outer edge linear velocity of the impeller is known, query whether a certain material type is available according to a mapping relationship between the highest stress and the outer edge linear velocity under different stress coefficients and the outer edge linear velocity of the impeller;
the speed query unit 332 is configured to, when the material type of the impeller is known, query the maximum outer edge linear speed corresponding to the material type according to the mapping relationship between the highest stress and the outer edge linear speed under different stress coefficients and the material type.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary hardware platform, and certainly may be implemented by hardware, but in many cases, the former is a better embodiment. With this understanding in mind, all or part of the technical solutions of the present invention that contribute to the background can be embodied in the form of a software product, which can be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments or some parts of the embodiments of the present invention.
The present invention has been described in detail, and the principle and embodiments of the present invention are explained herein by using specific examples, which are only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (4)
1. A centrifugal compressor impeller stress analysis method, comprising:
acquiring closed impeller stress analysis data, wherein the stress analysis data comprises the highest stress and the current outer edge linear velocity respectively corresponding to a ternary impeller series and a binary impeller series;
according to the formula α Smax/(U2)2100 and the impeller stress analysis data, and calculating a mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients, wherein α is the stress coefficient, Smax is the highest stress, and U2 is the outer edge linear velocity;
analyzing and evaluating the mechanical property of the impeller according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients; the analyzing and evaluating the mechanical property of the impeller according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients comprises the following steps:
if the outer edge linear speed of the impeller is known, inquiring whether a certain material type is available according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients and the outer edge linear speed of the impeller;
and if the material type of the impeller is known, inquiring the maximum outer edge linear velocity corresponding to the material type according to the mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients and the material type.
2. The centrifugal compressor impeller stress analysis method according to claim 1, further comprising:
obtaining a yield limit according to the type of the material and the corresponding relation between the material and the yield limit;
and calculating the maximum outer edge linear velocity of the impeller according to the yield limit and the mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients.
3. A centrifugal compressor impeller stress analysis system, comprising:
the system comprises an acquisition module, a processing module and a control module, wherein the acquisition module is used for acquiring closed impeller stress analysis data, and the stress analysis data comprises the highest stress and the outer edge linear velocity respectively corresponding to a ternary impeller series and a binary impeller series;
a first calculating module for calculating Smax/(U2) according to formula α2100 and the impeller stress analysis data, and calculating a mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients, wherein α is the stress coefficient, Smax is the highest stress, and U2 is the outer edge linear velocity;
the analysis module is used for analyzing and evaluating the mechanical property of the impeller according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients; the analysis module comprises:
the material query unit is used for querying whether a certain material type is available or not according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients and the outer edge linear speed of the impeller if the outer edge linear speed of the impeller is known;
and the speed query unit is used for querying the maximum outer edge linear speed corresponding to the material type according to the mapping relation between the highest stress and the outer edge linear speed under different stress coefficients and the material type if the material type of the impeller is known.
4. The centrifugal compressor impeller stress analysis system of claim 3, further comprising a second calculation module for obtaining a yield limit based on a material type and a correspondence between the material and the yield limit; and calculating the maximum outer edge linear velocity of the impeller according to the yield limit and the mapping relation between the highest stress and the outer edge linear velocity under different stress coefficients.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589867A (en) * | 2012-02-28 | 2012-07-18 | 上海发电设备成套设计研究院 | Method and device for monitoring high-cycle fatigue life of steam turbine integral rotor |
| CN104155092A (en) * | 2014-08-16 | 2014-11-19 | 中国科学院工程热物理研究所 | Wind turbine blade static analysis method |
| CN104239604A (en) * | 2014-07-21 | 2014-12-24 | 上海发电设备成套设计研究院 | Structural strength design monitoring method for large-size steam turbine part |
| CN104331553A (en) * | 2014-10-29 | 2015-02-04 | 浙江大学 | Optimal design method of large turbo expander impeller blade structure with defect consideration |
| CN105205291A (en) * | 2015-11-02 | 2015-12-30 | 无锡威孚英特迈增压技术有限公司 | Design method for hollow turbine |
| CN105488252A (en) * | 2015-11-22 | 2016-04-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Burst speed simulative analysis method for bolt-free structure turbine disk baffle |
-
2016
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589867A (en) * | 2012-02-28 | 2012-07-18 | 上海发电设备成套设计研究院 | Method and device for monitoring high-cycle fatigue life of steam turbine integral rotor |
| CN104239604A (en) * | 2014-07-21 | 2014-12-24 | 上海发电设备成套设计研究院 | Structural strength design monitoring method for large-size steam turbine part |
| CN104155092A (en) * | 2014-08-16 | 2014-11-19 | 中国科学院工程热物理研究所 | Wind turbine blade static analysis method |
| CN104331553A (en) * | 2014-10-29 | 2015-02-04 | 浙江大学 | Optimal design method of large turbo expander impeller blade structure with defect consideration |
| CN105205291A (en) * | 2015-11-02 | 2015-12-30 | 无锡威孚英特迈增压技术有限公司 | Design method for hollow turbine |
| CN105488252A (en) * | 2015-11-22 | 2016-04-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Burst speed simulative analysis method for bolt-free structure turbine disk baffle |
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Address after: 110869 No. 16 A Development Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: Shenyang Blower Works Group Corp. Address before: No.16a, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang, Liaoning, 110869 Patentee before: SHENYANG BLOWER WORKS Group Corp. |
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Application publication date: 20170322 Assignee: SHENYANG BLOWER GROUP GEAR COMPRESSOR CO.,LTD. Assignor: Shenyang Blower Works Group Corp. Contract record no.: X2023210000171 Denomination of invention: A Method and System for Stress Analysis of Centrifugal Compressor Impeller Granted publication date: 20200218 License type: Common License Record date: 20231103 |