Title:
VARIABLE-THICKNESS SEAL HEAD AND DESIGN METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/092876
Kind Code:
A1
Abstract:
A variable-thickness seal head and a design method thereof. The variable-thickness seal head comprises: a ball head (1) which is provided with a first thinning area (11) and a first thickening area (12); a ring portion (2), comprising a second thickening area (21) and a second thinning area (22); and a cylinder body (3), comprising a third thinning area (31). The design method comprises: selecting a variable-thickness seal head, and determining a thickening range and a thinning range of the variable-thickness seal head; calculating a surface area of the variable-thickness seal head, a surface area of the thinning area, and a surface area of the thickening area; on the basis of the fact that the total volume of the variable-thickness seal head under different thickening coefficients is equal to the total volume of the seal head before deformation, determining a thickness t1 of the thinning area and a thickness t2 of the thickening area; establishing a variable-thickness seal head simulation model; drawing a variable-thickness coefficient δ-load coefficient k graph, and selecting a beneficial variable-thickness interval; fitting a variable-thickness coefficient δ-load coefficient k functional equation; and determining a variable-thickness seal head limit load prediction model under different variable-thickness coefficients δ. According to the variable-thickness seal head, the problem of stress concentration can be solved, and the limit load is improved; according to the design method, the calculation amount can be reduced.
Inventors:
ZHANG JIAN (CN)
HU HAOFU (CN)
ZHAO TAN (CN)
ZHAN MING (CN)
LI HONGYUN (CN)
WANG FANG (CN)
SU SHIJIE (CN)
HU HAOFU (CN)
ZHAO TAN (CN)
ZHAN MING (CN)
LI HONGYUN (CN)
WANG FANG (CN)
SU SHIJIE (CN)
Application Number:
PCT/CN2022/077494
Publication Date:
June 01, 2023
Filing Date:
February 23, 2022
Export Citation:
Assignee:
UNIV JIANGSU SCIENCE & TECH (CN)
International Classes:
B63B3/13; B63B71/10
Foreign References:
| CN105620693A | 2016-06-01 | |||
| CN108920797A | 2018-11-30 | |||
| DE102018215489A1 | 2020-03-12 | |||
| GB949554A | 1964-02-12 | |||
| CN113581361A | 2021-11-02 | |||
| CN112182738A | 2021-01-05 | |||
| CN107180123A | 2017-09-19 | |||
| CN201065181Y | 2008-05-28 |
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM(ORDINARY PARTNERSHIP) (CN)
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