CN114580216A - Method and system for acquiring inner diameter deformation of wound ultrahigh-pressure container - Google Patents
Method and system for acquiring inner diameter deformation of wound ultrahigh-pressure container Download PDFInfo
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Abstract
The invention relates to a method and a system for acquiring the internal diameter deformation of a wound ultrahigh-pressure container, belonging to the technical field of pressure container production; comprises determining design parameters of the ultra-high pressure vessel, determining the outer diameter of the winding layer𝑟0And outer diameter of inner cylinder𝑟𝑗Calculating the initial stress sigma required by the winding of the kth layer of steel stripkAnd calculating the circumferential stress sigma of the inner wall of the inner cylinder caused by winding the kth layer of steel strip under the action of initial stress ki And calculating the deformation of the inner wall of the inner cylinder caused by winding the steel strip. Compared with the prior art, the method has the advantages that the calculation formula of the radial deformation amount generated by the inner cylinder when each layer of steel strip is wound is adjusted through the reason analysis of the deviation between the theoretical calculation and the actual deformation of the inner diameter of the inner cylinder, so thatThe actual radial deformation of the ultra-high pressure container during processing is basically consistent, the deviation range is +/-0.05 mm, the deviation range is basically consistent with the machining size error, the design and processing of matched parts are not influenced, and the production efficiency is improved.
Description
Technical Field
The invention relates to a method and a system for acquiring inner diameter deformation of a wound ultrahigh-pressure container, and belongs to the technical field of pressure container production.
Background
In order to prolong the fatigue life of the pressure vessel, the pressure vessel is generally subjected to self-reinforcing treatment, and the treatment measures comprise thermal sleeve and winding type self-reinforcing treatment. The general calculation method is calculated according to the fourth section of the third chapter of the ultra-high pressure vessel published by ISBN 7-5025 and 3860-7 chemical industry publisher 2002, 8 months published, and edited by Shao Hua and the like, however, the phenomenon that the deformation and the actual deformation deviation of the inner cylinder (explained by terms in ultra-high pressure vessel and shown in figures 2-8) obtained according to the calculation formula are too large easily occurs when the winding type ultra-high pressure vessel with the pressure of more than or equal to 500MPa is wound. The radial dimension of a plug head (the term is explained in the ultra-high pressure container figure 2-10) and the radial dimension of a material frame (the outer diameter of the material frame needs to be slightly smaller than the inner diameter of an inner cylinder, a certain gap is ensured between the material frame and the inner cylinder, and the material frame can move in the inner cylinder conveniently) are designed under the condition, so that the material frame and the plug head can be processed at the rear end of the inner cylinder after the inner cylinder is wound, the overall production progress is influenced, in addition, because the deformation is uncontrollable, the expansion amount of the inner cylinder in use can not be determined by engineering technicians, the confirmation of the sealing effect can not be carried out, and the potential hazard is caused to the safe use of equipment.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method and a system for acquiring the inner diameter deformation of a winding type ultrahigh pressure container in order to solve the problem that the theoretical calculation of the inner diameter of an inner cylinder has deviation from the actual deformation.
The purpose of the invention is realized by the following technical scheme.
In a first aspect, the present disclosure provides a method for obtaining an inner diameter deformation of a wound ultra-high pressure vessel, including the following steps:
determining design parameters of the ultrahigh pressure vessel: inner diameter of inner cylinder𝑟𝑖Inner cylinder safety factor𝑛𝑠Yield strength sigma of inner barrel material0.2Poisson's ratio mu of inner cylinder material, elastic modulus E of inner cylinder material, and yield strength sigma of wound steel strip material0.2GSafety coefficient of winding steel strip𝑛𝑠GAfter the steel strip is wound, the steel strip is radially woundThickness of𝑡Working pressure born by inner cylinder𝑝𝑖；
Determining the outer diameter of the winding layer according to the design specification of the ultrahigh pressure container𝑟0And outer diameter of inner cylinder𝑟𝑗；
Calculating the initial stress sigma required by winding the kth layer of steel strip according to the following formulak：
Wherein,Kafor adjusting the coefficients, ln is the logarithm based on the constant e, [ sigma ]]' indicates the allowable stress of the steel strip,r k the outer radius of a winding layer after the k-th layer of steel belt is wound;
calculating the circumferential stress sigma of the inner wall of the inner cylinder, caused by winding of the kth layer of steel belt under the action of the initial stress, according to the design specification of the ultrahigh pressure container ki ；
And (3) calculating the radial deformation of the inner cylinder caused by winding the k-th layer of steel strip according to the following formula:
and calculating the radial total deformation delta of the inner wall of the inner cylinder caused by winding the steel strip according to the following formula:
where λ represents the number of winding layers.
In a second aspect, the present disclosure provides an obtaining system for inner diameter deformation of a wound ultra-high pressure vessel, comprising an input parameter obtaining unit, configured to obtain design parameters of the ultra-high pressure vessel;
a winding layer and inner cylinder outer diameter calculating unit for determining the outer diameter r of the winding layer according to the design parameters and the design specifications of the ultrahigh pressure vessel0And inner cylinder outer diameter rj；
An initial stress calculation unit for calculating the initial stress according to the design parameters and the r0And rjCalculating initial stress required by winding each layer of steel strip;
the inner cylinder inner wall circumferential stress calculation unit is used for calculating the inner cylinder inner wall circumferential stress according to the initial stress and the design specification of the ultrahigh pressure container;
an inner cylinder inner diameter deformation obtaining unit for obtaining the inner cylinder inner diameter deformation according to the design parameters r0、rjAnd calculating the inner diameter deformation of the inner cylinder after the steel strip is wound by the circumferential stress of the inner wall of the inner cylinder.
In a third aspect, an embodiment of the present disclosure provides an electronic device, including:
a memory;
a processor; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of the first aspect.
In a fourth aspect, the present disclosure provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the method of the first aspect.
Advantageous effects
Compared with the prior art, the method has the advantages that through the reason analysis of the deviation between the theoretical calculation of the inner diameter of the inner cylinder and the actual deformation, the calculation formula of the radial deformation amount generated by the inner cylinder when each layer of steel strip is wound is adjusted, so that the radial deformation amount is basically consistent with the actual radial deformation amount when the ultrahigh pressure container is processed, the deviation range is +/-0.05 mm, the machining size error is basically consistent, the design and processing of matched parts are not influenced, and the production efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method for obtaining the inner diameter deformation of a wound ultra-high pressure vessel provided by the present disclosure;
FIG. 2 is a sectional view of the inner cylinder axis of the ultrahigh pressure vessel;
FIG. 3 is a sectional view of the axis of the ultrahigh-pressure vessel after the inner cylinder is wound with a steel strip;
fig. 4 is a schematic structural diagram of an acquisition system for inner diameter deformation of a wound ultra-high pressure vessel provided by the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of another electronic device provided in the embodiment of the present disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
The existing ultra-high pressure vessel is mostly designed according to the principle of ultra-high pressure vessel published by the chemical industry publisher in 2002, 8 months, and compiled by Shao Guo Hua and the like. The working pressure of the container designed in the industry is generally not higher than 300MPa due to the early publication time of the book, so the book is proved to be effective through experiments. However, with the increasing demands of people on material culture and living, the demand of pressure vessels with working pressure exceeding 300MPa is increasingly vigorous. However, in practice, it is found that, in a wound ultrahigh-pressure vessel with a working pressure of 500MPa or more, the deformation and actual deformation deviation of an inner cylinder (explained in terms of "ultrahigh-pressure vessel" fig. 2-8) calculated according to section four of chapter three of "ultrahigh-pressure vessel" during design are too large, so that plugs and frames processed according to a design drawing are not matched with the inner cylinder wound by a steel strip, a large number of plugs and frames are wasted, the production period of equipment is delayed, and raw materials and a large amount of working hours of design and processing personnel are wasted. It was found that the deformation deviation resulted from: when the working pressure of the pressure container is lower than 300MPa, the required self-reinforcing stress is generally lower than 3/4 of the yield strength of the material (the maximum yield strength of the material is generally 1100MPa-1300 MPa), at the moment, the stress-strain curve of the material is generally a straight line, the stress-strain curve of the material is adopted, but for the pressure vessel with the working pressure more than or equal to 500MPa, the required self-reinforcing stress is required to reach 1000MPa-1200MPa, the self-reinforcing stress is basically close to the yield strength of the material, the stress-strain curve of the material is 3/4 after the yield strength of the material is exceeded, the stress-strain curve becomes a nonlinear line and is in a shape close to a parabola, and the stress-strain data obtained by continuously extending the linear section in a calculation mode inevitably has deviation, so that the deformation obtained after a certain number of winding layers has obvious deviation from the actual deformation. In order to solve the problem that the deviation between the deformation of the inner cylinder and the actual deformation of the ultrahigh-pressure container after the ultrahigh-pressure container is wound by the steel strip is overlarge, the disclosure provides a method for acquiring the inner diameter deformation of the wound ultrahigh-pressure container.
Fig. 1 is a schematic flow chart of a method for obtaining the inner diameter deformation of a winding type ultra-high pressure vessel provided by the present disclosure, and as shown in fig. 1, the method for obtaining the inner diameter deformation of the winding type ultra-high pressure vessel includes the following steps:
1. determining design parameters of the ultrahigh pressure container: inner diameter of inner cylinder𝑟𝑖Inner cylinder safety factor𝑛𝑠Yield strength sigma of inner barrel material0.2Poisson's ratio mu of inner cylinder material, elastic modulus E of inner cylinder material, and yield strength sigma of wound steel strip material0.2GSafety coefficient of winding steel strip𝑛𝑠GRadial thickness of the wound steel strip𝑡Working pressure born by inner cylinder𝑝𝑖；
When designing an ultrahigh pressure vessel, basic parameters, such as the working pressure borne by the inner cylinder, need to be selected according to the actual application requirements𝑝𝑖Inner diameter of inner cylinder𝑟𝑖Safety coefficient of inner cylinder𝑛𝑠Inner barrel material, wound steel strip and wound steel strip safety coefficient𝑛𝑠GEtc. and determining the yield strength sigma of the inner barrel according to the selected material of the inner barrel0.2The Poisson ratio mu, the elastic modulus E and the like, and determining the yield strength sigma of the material according to the selected wound steel strip0.2GRadial thickness of the wound steel strip𝑡Etc.; and in the subsequent step, the inner diameter deformation is obtained according to the design parameters in the step.
Preferably, the safety coefficient of the inner cylinder is set for preventing winding collapse and inner cylinder tensile stress𝑛𝑠The value range is as follows:
2. determining the outer diameter of the winding layer according to the design specification of the ultrahigh pressure container𝑟0And outer diameter of inner cylinder𝑟𝑗；
Specifically, according to the inner diameter r of the inner cylinderiYield strength sigma of inner barrel material0.2Poisson ratio mu of inner cylinder material and yield strength sigma of wound steel strip material0.2GSafety coefficient of winding steel strip𝑛𝑠GWorking pressure p borne by the inner cylinderiThe outer diameter r of the winding layer is determined according to the relevant design specifications in the ultra-high pressure vessel edited by Shao Guohua et al0And inner cylinder outer diameter rj。
Further, the outer diameter r of the winding layer can be determined0Outer diameter r of inner cylinderjAnd the radial thickness of the wound steel strip𝑡The number of required winding layers λ is calculated according to the following formula:
3. calculating the initial stress sigma required by winding the kth layer of steel strip according to the following formulak：
Wherein,Kafor adjusting the coefficients, ln is the logarithm based on the constant e, [ sigma ]]' indicates the allowable stress of the steel strip,r k the outer radius of the winding layer after the k-th layer of steel belt is wound.
Specifically, the allowable stress [ σ ]' of the steel strip can be calculated by the following formula:
the inner diameter of the inner cylinder meets the design parameters of𝑟𝑖The total winding layer number is lambda, and the initial stress required by winding each layer from the 1 st layer to the lambda layer can be obtained, so that the value range of k is an integer between 1 and lambda. Here, theKaThe initial stress adjustment coefficient is set for prolonging the service life of the inner cylinder and generally takes 1.4-1.5.
Specifically, the outer radius of the wound layer after the k-th steel strip is wound can be calculated by the following formula:
4. calculating the circumferential stress sigma of the inner wall of the inner cylinder, caused by winding the kth layer of steel belt under the action of initial stress, according to the design specification of the ultrahigh pressure container ki ；
In particular, σ ki The calculation of (A) is carried out according to the relevant design specifications in the ultra-high pressure vessel (ultra-high pressure vessel) edited by Shao Guohua et al.
5. And (3) calculating the radial deformation of the inner cylinder caused by winding the k-th layer of steel strip according to the following formula:
when the working pressure of the pressure container is lower than 300MPa, the required self-reinforcing stress is generally lower than 3/4 of the yield strength of the material, at the moment, the stress-strain curve of the material is generally a straight line, and the stress-strain curve of the material is adopted, but for the pressure container with the working pressure of more than or equal to 500MPa, the required self-reinforcing stress is basically close to the yield strength of the material, and the stress-strain curve of the material is in a shape close to a parabola, so that the calculation formula of the radial deformation of the inner cylinder is adjusted according to the situation to be consistent with the actual situation, and the obvious deviation between the theoretical deformation and the actual deformation is avoided. In a formula, according to the relation between the accumulated circumferential stress of the inner wall of the inner barrel caused by winding of the front k-1 layers of steel strips and the yield strength of the material of the inner barrel, the radial deformation of the inner barrel caused by winding of each layer of steel strips is fitted in a segmented manner.
6. And calculating the radial total deformation delta of the inner wall of the inner cylinder caused by winding the steel strip according to the following formula:
accumulating the radial deformation of the inner cylinder caused by each step to obtain the total radial deformation delta of the inner wall of the wound inner cylinder𝑟Then use𝑟𝑖Minus delta𝑟The inner diameter of the inner cylinder after the steel strip is wound can be obtained𝑟𝑖 ’The design of the parts of the pressure vessel can be based on𝑟𝑖 ’The plug and the material frame are designed, then all parts are synchronously processed and assembled in parallel, and the production efficiency of the pressure container is improved.
In the above process, FIG. 2 provides a three-dimensional schematic of the inner barrel of an ultra-high pressure vessel, showing the inner diameter of the inner barrel𝑟𝑖And the outer diameter of the inner cylinder𝑟𝑗The relation between the inner cylinder and the axis of the inner cylinder; FIG. 3 is a three-dimensional schematic view of an ultrahigh-pressure vessel in which an inner cylinder is wound with a steel strip, showing an actual inner diameter of the inner cylinder after the inner cylinder is wound with the steel strip𝑟𝑖 ’Outer diameter of winding layer𝑟0Thickness of the winding layer𝑡And the outer diameter of a winding layer after the k layer of steel strip is wound𝑟kThe relationship between them.
Referring to the above method, the applicant actually manufactured a Pressure Vessel with a capacity of 350L and a working Pressure of 600MPa, the inner cylinder material was S15500(15 Cr-5 Ni-3 Cu) XM 12H 925 according to the page number 49 of 2019 ASME Specification ASME Boiler and Pressure Vessel Code An International Code of Session VIII Division 3, and the steel strip material was SA905 class2 thickness1.5mm according to the page number 39 of 2019 ASME Specification ASME Boiler and Pressure Vessel Code An International Code of Session VIII Division 3. The result proves that the method has the advantages that the design deformation is identical with the actual deformation, and the design production efficiency can be improved. The following is a detailed description:
1. designing parameters: r isi=190mm、𝑛𝑠=1.17、μ=0.285、E=200GPa、𝑛𝑠G=1.85、pi=600MPa, σ determination according to S15500(15 Cr-5 Ni-3 Cu) XM 12H 9250.2=1070MPa, Sigma determined according to SA905 class2 thickness1.5mm0.2G=1450MPa、t=1.5mm；
2. The outer diameter r of the winding layer is determined according to the relevant design specifications in the ultra-high pressure vessel edited by Shao Guohua et al0=572mm, inner barrel outer diameter rj=326mm；
3. The total number of winding layers λ = 164;
4. selectingKa=1.43, the calculated initial stress data required for each layer of steel strip is shown in the 2 nd column of table 1;
5. the circumferential stress data of the inner wall of the inner cylinder, which is obtained by calculation according to the design specification of the ultrahigh pressure container, of the k-th layer of steel strip under the action of initial stress is shown in the 3 rd column of the table 1;
6. the radial deformation data caused by winding of k layers of steel strips obtained by calculation according to the design specification of the ultrahigh pressure container are shown in a 5 th column of a table 1, wherein the accumulated circumferential stress data of the inner wall of the inner cylinder caused by winding of the front k-1 layers of steel strips are shown in a 4 th column of the table 1;
7. the data for the radial deformation caused by the winding of k layers of steel strips obtained according to the method disclosed by the invention are shown in the 6 th column of the table 1;
8. the data of the inner diameter of the wound inner cylinder of each layer obtained by actual measurement during winding is shown in the 7 th column of the table 1;
9. the data of deformation and actual deformation errors obtained according to the design specifications of the ultrahigh pressure container are shown in the 8 th column of the table 1;
10. the distortion and actual distortion error data obtained according to the disclosed method are shown in table 1, column 9.
TABLE 1350L inner barrel winding parameters
| Winding of Number of layers | Initial stress (MPa) | Inner wall circumferential stress Force (MPa) | Cumulative circumferential direction of inner wall Stress (MPa) | Calculation of original formula Deformation (mm) | After adjustment formula meter Calculation deformation (mm) | Change in fact Shape (mm) | Error of original formula Difference (mm) | Adjusted formula Error (mm) |
| 1 | 881.32 | 12.23 | 12.23 | 0.02 | 0.02 | 0.02 | 0.00 | 0.00 |
| 2 | 879.43 | 12.09 | 24.31 | 0.05 | 0.05 | 0.03 | 0.02 | 0.02 |
| 3 | 877.63 | 11.95 | 36.27 | 0.07 | 0.07 | 0.06 | 0.01 | 0.01 |
| 4 | 875.91 | 11.82 | 48.09 | 0.09 | 0.09 | 0.08 | 0.01 | 0.01 |
| 5 | 874.27 | 11.70 | 59.78 | 0.11 | 0.11 | 0.1 | 0.01 | 0.01 |
| 6 | 872.71 | 11.57 | 71.36 | 0.14 | 0.14 | 0.12 | 0.02 | 0.02 |
| 7 | 871.23 | 11.45 | 82.81 | 0.16 | 0.16 | 0.14 | 0.02 | 0.02 |
| 8 | 869.82 | 11.34 | 94.14 | 0.18 | 0.18 | 0.16 | 0.02 | 0.02 |
| 9 | 868.48 | 11.22 | 105.36 | 0.20 | 0.20 | 0.19 | 0.01 | 0.01 |
| 10 | 867.21 | 11.11 | 116.48 | 0.22 | 0.22 | 0.22 | 0.00 | 0.00 |
| 11 | 866.00 | 11.00 | 127.48 | 0.24 | 0.24 | 0.24 | 0.00 | 0.00 |
| 12 | 864.86 | 10.90 | 138.38 | 0.26 | 0.26 | 0.26 | 0.00 | 0.00 |
| 13 | 863.78 | 10.80 | 149.17 | 0.28 | 0.28 | 0.3 | -0.02 | -0.02 |
| 14 | 862.75 | 10.70 | 159.87 | 0.30 | 0.30 | 0.3 | 0.00 | 0.00 |
| 15 | 861.78 | 10.60 | 170.47 | 0.32 | 0.32 | 0.32 | 0.00 | 0.00 |
| 16 | 860.87 | 10.50 | 180.97 | 0.34 | 0.34 | 0.32 | 0.02 | 0.02 |
| 17 | 860.01 | 10.41 | 191.38 | 0.36 | 0.36 | 0.33 | 0.03 | 0.03 |
| 18 | 859.19 | 10.32 | 201.70 | 0.38 | 0.38 | 0.35 | 0.03 | 0.03 |
| 19 | 858.43 | 10.23 | 211.93 | 0.40 | 0.40 | 0.37 | 0.03 | 0.03 |
| 20 | 857.71 | 10.15 | 222.08 | 0.42 | 0.42 | 0.39 | 0.03 | 0.03 |
| 21 | 857.04 | 10.06 | 232.14 | 0.44 | 0.44 | 0.41 | 0.03 | 0.03 |
| 22 | 856.41 | 9.98 | 242.12 | 0.46 | 0.46 | 0.44 | 0.02 | 0.02 |
| 23 | 855.82 | 9.90 | 252.01 | 0.48 | 0.48 | 0.45 | 0.03 | 0.03 |
| 24 | 855.28 | 9.82 | 261.83 | 0.50 | 0.50 | 0.47 | 0.03 | 0.03 |
| 25 | 854.77 | 9.74 | 271.57 | 0.52 | 0.52 | 0.48 | 0.04 | 0.04 |
| 26 | 854.30 | 9.67 | 281.24 | 0.53 | 0.53 | 0.5 | 0.03 | 0.03 |
| 27 | 853.87 | 9.59 | 290.83 | 0.55 | 0.55 | 0.52 | 0.03 | 0.03 |
| 28 | 853.47 | 9.52 | 300.35 | 0.57 | 0.57 | 0.54 | 0.03 | 0.03 |
| 29 | 853.10 | 9.45 | 309.80 | 0.59 | 0.59 | 0.56 | 0.03 | 0.03 |
| 30 | 852.77 | 9.38 | 319.18 | 0.61 | 0.61 | 0.58 | 0.03 | 0.03 |
| 31 | 852.47 | 9.31 | 328.49 | 0.62 | 0.62 | 0.6 | 0.02 | 0.02 |
| 32 | 852.20 | 9.25 | 337.74 | 0.64 | 0.64 | 0.63 | 0.01 | 0.01 |
| 33 | 851.96 | 9.18 | 346.92 | 0.66 | 0.66 | 0.65 | 0.01 | 0.01 |
| 34 | 851.75 | 9.12 | 356.04 | 0.68 | 0.68 | 0.67 | 0.01 | 0.01 |
| 35 | 851.56 | 9.05 | 365.09 | 0.69 | 0.69 | 0.69 | 0.00 | 0.00 |
| 36 | 851.41 | 8.99 | 374.08 | 0.71 | 0.71 | 0.71 | 0.00 | 0.00 |
| 37 | 851.28 | 8.93 | 383.01 | 0.73 | 0.73 | 0.72 | 0.01 | 0.01 |
| 38 | 851.17 | 8.87 | 391.88 | 0.74 | 0.74 | 0.72 | 0.02 | 0.02 |
| 39 | 851.08 | 8.81 | 400.70 | 0.76 | 0.76 | 0.74 | 0.02 | 0.02 |
| 40 | 851.02 | 8.76 | 409.46 | 0.78 | 0.78 | 0.74 | 0.04 | 0.04 |
| 41 | 850.99 | 8.70 | 418.16 | 0.79 | 0.79 | 0.77 | 0.02 | 0.02 |
| 42 | 850.97 | 8.65 | 426.80 | 0.81 | 0.81 | 0.77 | 0.04 | 0.04 |
| 43 | 850.98 | 8.59 | 435.39 | 0.83 | 0.83 | 0.8 | 0.03 | 0.03 |
| 44 | 851.00 | 8.54 | 443.93 | 0.84 | 0.84 | 0.82 | 0.02 | 0.02 |
| 45 | 851.05 | 8.49 | 452.42 | 0.86 | 0.86 | 0.83 | 0.03 | 0.03 |
| 46 | 851.11 | 8.44 | 460.86 | 0.88 | 0.88 | 0.85 | 0.03 | 0.03 |
| 47 | 851.19 | 8.39 | 469.24 | 0.89 | 0.89 | 0.85 | 0.04 | 0.04 |
| 48 | 851.29 | 8.34 | 477.58 | 0.91 | 0.91 | 0.87 | 0.04 | 0.04 |
| 49 | 851.41 | 8.29 | 485.86 | 0.92 | 0.92 | 0.88 | 0.04 | 0.04 |
| 50 | 851.54 | 8.24 | 494.10 | 0.94 | 0.94 | 0.9 | 0.04 | 0.04 |
| 51 | 851.69 | 8.19 | 502.30 | 0.95 | 0.95 | 0.92 | 0.03 | 0.03 |
| 52 | 851.85 | 8.15 | 510.44 | 0.97 | 0.97 | 0.94 | 0.03 | 0.03 |
| 53 | 852.03 | 8.10 | 518.54 | 0.99 | 0.99 | 0.95 | 0.04 | 0.04 |
| 54 | 852.23 | 8.06 | 526.60 | 1.00 | 1.00 | 0.97 | 0.03 | 0.03 |
| 55 | 852.43 | 8.01 | 534.61 | 1.02 | 1.02 | 0.98 | 0.04 | 0.04 |
| 56 | 852.65 | 7.97 | 542.58 | 1.03 | 1.03 | 0.99 | 0.04 | 0.04 |
| 57 | 852.89 | 7.92 | 550.50 | 1.05 | 1.05 | 1.01 | 0.04 | 0.04 |
| 58 | 853.13 | 7.88 | 558.38 | 1.06 | 1.06 | 1.04 | 0.02 | 0.02 |
| 59 | 853.39 | 7.84 | 566.23 | 1.08 | 1.08 | 1.05 | 0.03 | 0.03 |
| 60 | 853.66 | 7.80 | 574.03 | 1.09 | 1.09 | 1.07 | 0.02 | 0.02 |
| 61 | 853.94 | 7.76 | 581.79 | 1.11 | 1.11 | 1.09 | 0.02 | 0.02 |
| 62 | 854.23 | 7.72 | 589.51 | 1.12 | 1.12 | 1.1 | 0.02 | 0.02 |
| 63 | 854.54 | 7.68 | 597.19 | 1.13 | 1.13 | 1.12 | 0.01 | 0.01 |
| 64 | 854.85 | 7.64 | 604.83 | 1.15 | 1.15 | 1.14 | 0.01 | 0.01 |
| 65 | 855.17 | 7.60 | 612.44 | 1.16 | 1.16 | 1.16 | 0.00 | 0.00 |
| 66 | 855.50 | 7.57 | 620.00 | 1.18 | 1.18 | 1.18 | 0.00 | 0.00 |
| 67 | 855.85 | 7.53 | 627.53 | 1.19 | 1.19 | 1.2 | -0.01 | -0.01 |
| 68 | 856.20 | 7.49 | 635.03 | 1.21 | 1.21 | 1.23 | -0.02 | -0.02 |
| 69 | 856.55 | 7.46 | 642.49 | 1.22 | 1.22 | 1.23 | -0.01 | -0.01 |
| 70 | 856.92 | 7.42 | 649.91 | 1.23 | 1.23 | 1.25 | -0.02 | -0.02 |
| 71 | 857.30 | 7.39 | 657.30 | 1.25 | 1.25 | 1.25 | 0.00 | 0.00 |
| 72 | 857.68 | 7.35 | 664.65 | 1.26 | 1.26 | 1.26 | 0.00 | 0.00 |
| 73 | 858.07 | 7.32 | 671.97 | 1.28 | 1.28 | 1.29 | -0.01 | -0.01 |
| 74 | 858.46 | 7.29 | 679.25 | 1.29 | 1.29 | 1.31 | -0.02 | -0.02 |
| 75 | 858.87 | 7.25 | 686.51 | 1.30 | 1.30 | 1.33 | -0.03 | -0.03 |
| 76 | 859.28 | 7.22 | 693.72 | 1.32 | 1.32 | 1.35 | -0.03 | -0.03 |
| 77 | 859.70 | 7.19 | 700.91 | 1.33 | 1.33 | 1.37 | -0.04 | -0.04 |
| 78 | 860.12 | 7.16 | 708.07 | 1.35 | 1.35 | 1.37 | -0.02 | -0.02 |
| 79 | 860.55 | 7.12 | 715.19 | 1.36 | 1.36 | 1.39 | -0.03 | -0.03 |
| 80 | 860.98 | 7.09 | 722.28 | 1.37 | 1.37 | 1.4 | -0.03 | -0.03 |
| 81 | 861.42 | 7.06 | 729.35 | 1.39 | 1.39 | 1.42 | -0.03 | -0.03 |
| 82 | 861.87 | 7.03 | 736.38 | 1.40 | 1.40 | 1.43 | -0.03 | -0.03 |
| 83 | 862.32 | 7.00 | 743.38 | 1.41 | 1.41 | 1.44 | -0.03 | -0.03 |
| 84 | 862.77 | 6.97 | 750.35 | 1.43 | 1.43 | 1.45 | -0.02 | -0.02 |
| 85 | 863.23 | 6.94 | 757.29 | 1.44 | 1.44 | 1.46 | -0.02 | -0.02 |
| 86 | 863.70 | 6.91 | 764.21 | 1.45 | 1.45 | 1.48 | -0.03 | -0.03 |
| 87 | 864.17 | 6.89 | 771.09 | 1.47 | 1.47 | 1.49 | -0.02 | -0.02 |
| 88 | 864.64 | 6.86 | 777.95 | 1.48 | 1.48 | 1.51 | -0.03 | -0.03 |
| 89 | 865.12 | 6.83 | 784.78 | 1.49 | 1.49 | 1.53 | -0.04 | -0.04 |
| 90 | 865.60 | 6.80 | 791.58 | 1.50 | 1.50 | 1.55 | -0.05 | -0.05 |
| 91 | 866.08 | 6.77 | 798.35 | 1.52 | 1.52 | 1.57 | -0.05 | -0.05 |
| 92 | 866.57 | 6.75 | 805.10 | 1.53 | 1.53 | 1.58 | -0.05 | -0.05 |
| 93 | 867.06 | 6.72 | 811.82 | 1.54 | 1.55 | 1.6 | -0.06 | -0.05 |
| 94 | 867.56 | 6.69 | 818.51 | 1.56 | 1.57 | 1.61 | -0.05 | -0.04 |
| 95 | 868.05 | 6.67 | 825.18 | 1.57 | 1.59 | 1.63 | -0.06 | -0.04 |
| 96 | 868.55 | 6.64 | 831.82 | 1.58 | 1.60 | 1.65 | -0.07 | -0.05 |
| 97 | 869.06 | 6.62 | 838.44 | 1.59 | 1.62 | 1.67 | -0.08 | -0.05 |
| 98 | 869.56 | 6.59 | 845.03 | 1.61 | 1.64 | 1.68 | -0.07 | -0.04 |
| 99 | 870.07 | 6.57 | 851.60 | 1.62 | 1.65 | 1.68 | -0.06 | -0.03 |
| 100 | 870.58 | 6.54 | 858.14 | 1.63 | 1.67 | 1.7 | -0.07 | -0.03 |
| 101 | 871.10 | 6.52 | 864.65 | 1.64 | 1.69 | 1.72 | -0.08 | -0.03 |
| 102 | 871.61 | 6.49 | 871.14 | 1.66 | 1.70 | 1.72 | -0.06 | -0.02 |
| 103 | 872.13 | 6.47 | 877.61 | 1.67 | 1.72 | 1.74 | -0.07 | -0.02 |
| 104 | 872.65 | 6.44 | 884.06 | 1.68 | 1.74 | 1.77 | -0.09 | -0.03 |
| 105 | 873.17 | 6.42 | 890.48 | 1.69 | 1.75 | 1.77 | -0.08 | -0.02 |
| 106 | 873.70 | 6.40 | 896.88 | 1.70 | 1.77 | 1.79 | -0.09 | -0.02 |
| 107 | 874.22 | 6.37 | 903.25 | 1.72 | 1.78 | 1.8 | -0.08 | -0.02 |
| 108 | 874.75 | 6.35 | 909.60 | 1.73 | 1.80 | 1.8 | -0.07 | 0.00 |
| 109 | 875.28 | 6.33 | 915.93 | 1.74 | 1.82 | 1.82 | -0.08 | 0.00 |
| 110 | 875.81 | 6.31 | 922.24 | 1.75 | 1.83 | 1.84 | -0.09 | -0.01 |
| 111 | 876.34 | 6.28 | 928.52 | 1.76 | 1.85 | 1.85 | -0.09 | 0.00 |
| 112 | 876.87 | 6.26 | 934.78 | 1.78 | 1.86 | 1.86 | -0.08 | 0.00 |
| 113 | 877.40 | 6.24 | 941.03 | 1.79 | 1.88 | 1.88 | -0.09 | 0.00 |
| 114 | 877.94 | 6.22 | 947.24 | 1.80 | 1.89 | 1.9 | -0.10 | -0.01 |
| 115 | 878.48 | 6.20 | 953.44 | 1.81 | 1.91 | 1.92 | -0.11 | -0.01 |
| 116 | 879.01 | 6.18 | 959.62 | 1.82 | 1.92 | 1.93 | -0.11 | -0.01 |
| 117 | 879.55 | 6.16 | 965.77 | 1.83 | 1.94 | 1.94 | -0.11 | 0.00 |
| 118 | 880.09 | 6.13 | 971.91 | 1.85 | 1.96 | 1.96 | -0.11 | 0.00 |
| 119 | 880.63 | 6.11 | 978.02 | 1.86 | 1.98 | 1.98 | -0.12 | 0.00 |
| 120 | 881.17 | 6.09 | 984.12 | 1.87 | 1.99 | 1.99 | -0.12 | 0.00 |
| 121 | 881.71 | 6.07 | 990.19 | 1.88 | 2.01 | 2.01 | -0.13 | 0.00 |
| 122 | 882.25 | 6.05 | 996.24 | 1.89 | 2.03 | 2.01 | -0.12 | 0.02 |
| 123 | 882.79 | 6.03 | 1002.28 | 1.90 | 2.04 | 2.03 | -0.13 | 0.01 |
| 124 | 883.33 | 6.01 | 1008.29 | 1.92 | 2.06 | 2.05 | -0.13 | 0.01 |
| 125 | 883.87 | 5.99 | 1014.29 | 1.93 | 2.08 | 2.07 | -0.14 | 0.01 |
| 126 | 884.42 | 5.98 | 1020.26 | 1.94 | 2.09 | 2.09 | -0.15 | 0.00 |
| 127 | 884.96 | 5.96 | 1026.22 | 1.95 | 2.11 | 2.11 | -0.16 | 0.00 |
| 128 | 885.50 | 5.94 | 1032.15 | 1.96 | 2.13 | 2.12 | -0.16 | 0.01 |
| 129 | 886.04 | 5.92 | 1038.07 | 1.97 | 2.14 | 2.14 | -0.17 | 0.00 |
| 130 | 886.59 | 5.90 | 1043.97 | 1.98 | 2.16 | 2.16 | -0.18 | 0.00 |
| 131 | 887.13 | 5.88 | 1049.85 | 1.99 | 2.18 | 2.16 | -0.17 | 0.02 |
| 132 | 887.67 | 5.86 | 1055.71 | 2.01 | 2.19 | 2.18 | -0.17 | 0.01 |
| 133 | 888.22 | 5.84 | 1061.56 | 2.02 | 2.21 | 2.19 | -0.17 | 0.02 |
| 134 | 888.76 | 5.83 | 1067.39 | 2.03 | 2.22 | 2.21 | -0.18 | 0.01 |
| 135 | 889.30 | 5.81 | 1073.19 | 2.04 | 2.24 | 2.21 | -0.17 | 0.03 |
| 136 | 889.84 | 5.79 | 1078.98 | 2.05 | 2.25 | 2.22 | -0.17 | 0.03 |
| 137 | 890.39 | 5.77 | 1084.76 | 2.06 | 2.27 | 2.24 | -0.18 | 0.03 |
| 138 | 890.93 | 5.76 | 1090.51 | 2.07 | 2.29 | 2.26 | -0.19 | 0.03 |
| 139 | 891.47 | 5.74 | 1096.25 | 2.08 | 2.30 | 2.28 | -0.20 | 0.02 |
| 140 | 892.01 | 5.72 | 1101.97 | 2.09 | 2.32 | 2.3 | -0.21 | 0.02 |
| 141 | 892.55 | 5.70 | 1107.67 | 2.10 | 2.33 | 2.31 | -0.21 | 0.02 |
| 142 | 893.09 | 5.69 | 1113.36 | 2.12 | 2.35 | 2.33 | -0.21 | 0.02 |
| 143 | 893.63 | 5.67 | 1119.03 | 2.13 | 2.36 | 2.35 | -0.22 | 0.01 |
| 144 | 894.17 | 5.65 | 1124.68 | 2.14 | 2.38 | 2.36 | -0.22 | 0.02 |
| 145 | 894.71 | 5.64 | 1130.32 | 2.15 | 2.39 | 2.38 | -0.23 | 0.01 |
| 146 | 895.25 | 5.62 | 1135.94 | 2.16 | 2.41 | 2.39 | -0.23 | 0.02 |
| 147 | 895.79 | 5.60 | 1141.54 | 2.17 | 2.42 | 2.4 | -0.23 | 0.02 |
| 148 | 896.33 | 5.59 | 1147.13 | 2.18 | 2.44 | 2.43 | -0.25 | 0.01 |
| 149 | 896.86 | 5.57 | 1152.70 | 2.19 | 2.45 | 2.45 | -0.26 | 0.00 |
| 150 | 897.40 | 5.56 | 1158.25 | 2.20 | 2.46 | 2.47 | -0.27 | -0.01 |
| 151 | 897.93 | 5.54 | 1163.79 | 2.21 | 2.48 | 2.49 | -0.28 | -0.01 |
| 152 | 898.47 | 5.52 | 1169.32 | 2.22 | 2.49 | 2.5 | -0.28 | -0.01 |
| 153 | 899.00 | 5.51 | 1174.82 | 2.23 | 2.51 | 2.5 | -0.27 | 0.01 |
| 154 | 899.54 | 5.49 | 1180.32 | 2.24 | 2.52 | 2.52 | -0.28 | 0.00 |
| 155 | 900.07 | 5.48 | 1185.79 | 2.25 | 2.54 | 2.53 | -0.28 | 0.01 |
| 156 | 900.60 | 5.46 | 1191.25 | 2.26 | 2.55 | 2.54 | -0.28 | 0.01 |
| 157 | 901.13 | 5.45 | 1196.70 | 2.27 | 2.56 | 2.55 | -0.28 | 0.01 |
| 158 | 901.66 | 5.43 | 1202.13 | 2.28 | 2.58 | 2.56 | -0.28 | 0.02 |
| 159 | 902.19 | 5.42 | 1207.55 | 2.29 | 2.59 | 2.57 | -0.28 | 0.02 |
| 160 | 902.72 | 5.40 | 1212.95 | 2.30 | 2.60 | 2.59 | -0.29 | 0.01 |
| 161 | 903.24 | 5.39 | 1218.34 | 2.31 | 2.62 | 2.61 | -0.30 | 0.01 |
| 162 | 903.77 | 5.37 | 1223.71 | 2.33 | 2.63 | 2.61 | -0.28 | 0.02 |
| 163 | 904.29 | 5.36 | 1229.06 | 2.34 | 2.64 | 2.63 | -0.29 | 0.01 |
| 164 | 904.82 | 5.34 | 1234.41 | 2.35 | 2.66 | 2.63 | -0.28 | 0.03 |
As can be seen from the data in the table, before 90 layers, the deformation data obtained according to the design specification of the ultra-high pressure container and the deformation data obtained according to the method are basically consistent with the actual winding data, but the original method gradually deviates from the actual deformation along with the increase of the accumulated circumferential stress of the inner wall of the inner cylinder, the method is basically consistent with the actual deformation, the deviation range is +/-0.05 mm and is basically consistent with the machining size error, the effectiveness of the method is also proved, the production efficiency can be improved through the method, and the design and the machining independence of other matched parts are not influenced.
Fig. 4 is a schematic structural diagram of an acquisition system for inner diameter deformation of a wound ultra-high pressure vessel according to the present disclosure, and as shown in fig. 4, the acquisition system for inner diameter deformation of a wound ultra-high pressure vessel includes an input parameter acquisition unit for acquiring design parameters of the ultra-high pressure vessel;
a calculation unit for outer diameters of the winding layer and the inner cylinder for determining the outer diameter r of the winding layer according to the design parameters and the design specification of the ultra-high pressure vessel0And inner cylinder outer diameter rj；
An initial stress calculation unit for calculating the initial stress according to the design parameters and the r0And rjCalculating initial stress required by winding each layer of steel strip;
the inner cylinder inner wall circumferential stress calculation unit is used for calculating the inner cylinder inner wall circumferential stress according to the initial stress and the design specification of the ultrahigh pressure container;
an inner cylinder inner diameter deformation obtaining unit for obtaining the inner cylinder inner diameter deformation according to the design parameters r0、rjAnd calculating the inner diameter deformation of the inner cylinder after the steel strip is wound by the circumferential stress of the inner wall of the inner cylinder.
Preferably, the design parameter comprises the inner diameter of the inner barrel𝑟𝑖Inner cylinder safety factor𝑛𝑠Yield strength sigma of inner barrel material0.2Poisson's ratio mu of inner cylinder material, elastic modulus E of inner cylinder material, and yield strength sigma of wound steel strip material0.2GSafety coefficient of winding steel strip𝑛𝑠GRadial thickness of the wound steel strip𝑡Working pressure born by inner cylinder𝑝𝑖。
Preferably, the safety coefficient of the inner cylinder is used for preventing winding collapse and inner cylinder tensile stress𝑛𝑠The value range is as follows:
preferably, the initial stress required for winding each layer of the steel strip is calculated by the following formula:
wherein σkRepresents the initial stress required by the winding of the k-th layer of steel strip,Kafor adjusting the coefficients, ln is the logarithm based on the constant e, [ sigma ]]' indicates the allowable stress of the steel strip,r k and the outer diameter of the wound layer after the k-th steel strip is wound is shown.
Specifically, the allowable stress [ σ ]' of the steel strip can be calculated by the following formula:
in the case of the better, the content of the active ingredient,r k calculated by the following formula:
preferably, the inner diameter deformation delta of the inner cylinder is formed by accumulating the radial deformation of the inner cylinder caused by winding each layer of steel strip according to the following formula:
wherein, Deltak𝑟Showing the radial deformation of the inner drum caused by the winding of the k-th layer of steel strip.
Preferably,. DELTA.k𝑟Calculated by the following formula:
wherein σ ki Showing the inner wall circumference of the inner cylinder caused by winding the kth layer of steel strip under the action of initial stressAnd (4) stress.
The contents in the method embodiments are all applicable to the system embodiments, the functions specifically implemented by the system embodiments are the same as those in the method embodiments, and the beneficial effects achieved by the system embodiments are also the same as those achieved by the method embodiments.
Fig. 5 is a schematic structural diagram of an embodiment of an electronic device according to an embodiment of the present disclosure, where the electronic device may execute the processing procedure provided in the foregoing method embodiment. As shown in fig. 5, the electronic device includes a memory 151 and a processor 152.
And a memory 151 for storing a program. In addition to the above-described programs, the memory 151 may also be configured to store other various data to support operations on the electronic device. Examples of such data include instructions for any application or method operating on the electronic device, contact data, phonebook data, messages, pictures, videos, and the like.
The memory 151 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
A processor 152, coupled to the memory 151, executes programs stored by the memory 151 for implementing the methods as described above.
Further, as shown in fig. 5, the electronic device may further include: communication components 153, power components 154, audio components 155, a display 156, and other components. Only some of the components are schematically shown in fig. 5, and it is not meant that the electronic device comprises only the components shown in fig. 5.
The communication component 153 is configured to facilitate wired or wireless communication between the electronic device and other devices. The electronic device may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 153 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 153 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
A power supply component 154 provides power to the various components of the electronic device. The power components 154 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for an electronic device.
The display 156 includes a screen, which may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
Fig. 6 is a schematic structural diagram of another electronic device according to an embodiment of the present disclosure, where the device may execute the processing flow provided by the foregoing method embodiment, and as shown in fig. 6, the electronic device 110 includes: memory 111, processor 112, computer programs, and communications interface 113; wherein the computer program is stored in the memory 111 and is configured to be executed by the processor 112 for performing the method as described above.
In addition, the embodiment of the present disclosure also provides a computer readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method described in the above embodiment.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks. The sequence numbers of the steps in the above method embodiments are not used to limit the order of implementing the method, but are merely for convenience of description, and the implementation order of the steps may be changed as required in specific implementation, as long as there is no conflict between the steps.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present disclosure, and not for limiting the same; while the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.
Claims (10)
1. The method for acquiring the inner diameter deformation of the wound ultrahigh-pressure container is characterized by comprising the following steps of: the method comprises the following steps:
determining design parameters of the ultrahigh pressure vessel: inner diameter of inner cylinder𝑟𝑖Inner cylinder safety factor𝑛𝑠Yield strength sigma of inner barrel material0.2Poisson's ratio mu of inner cylinder material, elastic modulus E of inner cylinder material, and yield strength sigma of wound steel strip material0.2GSafety coefficient of winding steel strip𝑛𝑠GRadial thickness of the wound steel strip𝑡Working pressure born by inner cylinder𝑝𝑖；
Determining the outer diameter of the winding layer according to the design specification of the ultrahigh pressure container𝑟0And outer diameter of inner cylinder𝑟𝑗；
Calculating the initial stress sigma required by winding the kth layer of steel strip according to the following formulak：
Wherein,Kafor adjusting the coefficients, ln is the logarithm based on the constant e, [ sigma ]]' indicates the allowable stress of the steel strip,r k the outer radius of a winding layer after the k-th layer of steel belt is wound;
calculating the circumferential stress sigma of the inner wall of the inner cylinder, caused by winding of the kth layer of steel belt under the action of the initial stress, according to the design specification of the ultrahigh pressure container ki ；
And (3) calculating the radial deformation of the inner cylinder caused by winding the k-th layer of steel strip according to the following formula:
and calculating the radial total deformation delta of the inner wall of the inner cylinder caused by winding the steel strip according to the following formula:
where λ represents the number of winding layers.
2. The method of claim 1, wherein: the described𝑛𝑠The value range is as follows:
3. the method of claim 1, wherein: the above-mentionedKaThe value of (a) is in the range of 1.4 to 1.5.
4. The utility model provides an acquisition system that wound form superhigh pressure container internal diameter warp which characterized in that: the system comprises an input parameter acquisition unit, a parameter calculation unit and a parameter calculation unit, wherein the input parameter acquisition unit is used for acquiring design parameters of the ultrahigh pressure container;
a winding layer and inner cylinder outer diameter calculating unit for determining the outer diameter r of the winding layer according to the design parameters and the design specification of the ultrahigh pressure vessel0And inner cylinder outer diameter rj；
An initial stress calculation unit for calculating the initial stress according to the design parameters and the r0And rjCalculating initial stress required by winding each layer of steel strip;
the inner cylinder inner wall circumferential stress calculation unit is used for calculating the inner cylinder inner wall circumferential stress according to the initial stress and the design specification of the ultrahigh pressure container;
an inner cylinder inner diameter deformation obtaining unit for obtaining the inner cylinder inner diameter deformation according to the design parameters r0、rjAnd calculating the inner diameter deformation of the inner cylinder after the steel strip is wound by the circumferential stress of the inner wall of the inner cylinder.
5. The system of claim 4, wherein: the design parameters include inner diameter of the inner cylinder𝑟𝑖Inner cylinder safety factor𝑛𝑠Yield strength sigma of inner barrel material0.2Poisson's ratio mu of inner cylinder material, elastic modulus E of inner cylinder material, and yield strength sigma of wound steel strip material0.2GSafety coefficient of winding steel strip𝑛𝑠GRadial thickness of the wound steel strip𝑡Working pressure born by inner cylinder𝑝𝑖。
6. The system of claim 5, wherein: the above-mentioned𝑛𝑠The value range is as follows:
7. the system of claim 6, wherein: the initial stress required for winding each layer of steel strip is calculated by the following formula:
wherein σkRepresents the initial stress required by the winding of the k-th layer of steel strip,Kafor adjusting the coefficients, ln is the logarithm based on the constant e, [ sigma ]]' indicates the allowable stress of the steel strip,r k and the outer diameter of the wound layer after the k-th steel strip is wound is shown.
8. The system of claim 7, wherein: the above-mentionedr k Calculated by the following formula:
9. the system of claim 8, wherein: the inner diameter deformation delta of the inner cylinder is formed by accumulating the radial deformation of the inner cylinder caused by winding each layer of steel strip according to the following formula:
wherein, Deltak𝑟Showing the radial deformation of the inner drum caused by the winding of the k-th steel strip.
10. The system of claim 9, wherein: said Δk𝑟Calculated by the following formula:
wherein σ ki And the circumferential stress of the inner wall of the inner cylinder, which is caused by winding the k-th layer of steel strip under the action of initial stress, is shown.
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| CN118427906A (en) * | 2024-07-02 | 2024-08-02 | 合肥通用机械研究院有限公司 | Checking method of multilayer bundling cylinder inner barrel based on circumferential instability |
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