Unlock instant, AI-driven research and patent intelligence for your innovation.
A method for analyzing the vibration performance of a single screw compressor star wheel
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A single screw compressor, star wheel technology, applied in special data processing applications, instruments, electrical digital data processing and other directions, can solve the problems of analysis accuracy and analysis speed difference
Inactive Publication Date: 2018-01-12
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
View PDF0 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] The present invention aims at the problems existing in the above-mentioned prior art, and provides a method for analyzing the vibration performance of the star wheel of a single-screw compressor, which solves the problem of poor analysis accuracy and analysis speed in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0046] The technical scheme of the present invention comprises the following steps:
[0047] Step 1: Construction of the superwavelet space
[0048] Curveletwavelet function and Generate subspaces with multiresolution analysis properties and The tensor product of two subspaces forms a higher-order space, and the corresponding mathematical expression is as follows:
[0049]
[0050] In the formula, V j Represents a tensor space, j=0,1,...,N-1; Represents Kronecker notation, α and β represent the local coordinate system;
[0051] The Curveletwavelet function in the subspace is expressed in the following form:
[0052]
[0053]
[0054] Higher order space {V j} The Curvelet wavelet function is expressed in the following form:
[0055]
[0056] Step 2: Determination of Interpolation Function
[0057] The Curvelet wavelet function is used as an interpolation function to determine the superwavelet finite element, and the displacement field function is ex...
specific Embodiment
[0083] Specific examples are as follows:
[0084] The geometric model of the star wheel is as figure 1 shown. Among them, 1, star wheel, 2, fixed end, 3, free end, h represents thickness, b represents tooth width, R 0 represents the outer radius, R m Indicates the radius at the tooth slot, R i represents the inner radius, n 1 Indicates the constant speed of a single screw compressor.
[0085] The vibration characteristics of the single-screw compressor star wheel are analyzed by ultra-wavelet finite element, and compared with the traditional finite element analysis, the geometric size of the star wheel is taken as: R i =40mm, R O =300mm, h=30mm. The performance parameters of the star wheel material are: E=10.3GPa, ν=0.3, ρ=1500kg / m 2 .
[0086] The number of elements used to mesh the single-screw compressor star wheel using traditional finite element is 426, and the number of mesh elements used to mesh the single-screw compressor star wheel using ultra-wavelet finite ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention relates to a method for analyzing the vibration performance of a star wheel of a single-screw compressor; comprising the following steps: step 1, the construction of an ultrawavelet space, step 2, the determination of an interpolation function, and step 3, the determination of a star wheel vibration model of a single-screw compressor, and the steps 4 Construction of the ultrawavelet finite element model of star wheel vibration; the natural frequency and corresponding mode shape of the single-screw compressor can be obtained by using the ultrawavelet finite element model constructed above, so that the accuracy of the wavelet finite element can be verified. At the same time, the influencing factors of the vibration performance of the single-screw compressor are studied, and the influence of the thickness of the star wheel of the single-screw compressor and the ratio of inner and outer diameters on the vibration performance indicators of the single-screw compressor are discussed respectively. Ultrawavelet finite element can improve the analysis accuracy and analysis speed of the vibration characteristics of single-screw compressor star wheel, which can provide a favorable theoretical basis for the design of single-screw compressor star wheel.
Description
technical field [0001] The invention relates to a method for analyzing the vibration performance of a compressor, in particular to a method for analyzing the vibration performance of a single-screw compressor star wheel. Background technique [0002] Single-screw compressors have many advantages, such as simple structure, light weight, stable operation, low vibration and noise, easy maintenance and maintenance, etc. This type of compressor has a relatively broad development prospect. The single screw compressor mainly includes casing components, star wheel components, screw components, end cover components, lubricationsystem and bearing system. Single screw compressors can be used in many fields such as petroleum, petrochemical, refrigeration and aerospace. The star wheel is an important component of the single-screw compressor, and its vibration form is extremely complex. Therefore, it is necessary to require an efficient and feasible analysis method to analyze its vibrat...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 赵斌刘经纬杨明硕
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
Login to View More 
Login to View More