王成, 单涵, 戴涵洋, et al. Comparative Analysis of Sealing Performance Between Tapered/tapered and Spherical/tapered Structures of Special Threaded Joint of Oil Casing[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(3): 438-444.
DOI:
王成, 单涵, 戴涵洋, et al. Comparative Analysis of Sealing Performance Between Tapered/tapered and Spherical/tapered Structures of Special Threaded Joint of Oil Casing[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(3): 438-444. DOI: 10.13433/j.cnki.1003-8728.20230216.
Comparative Analysis of Sealing Performance Between Tapered/tapered and Spherical/tapered Structures of Special Threaded Joint of Oil Casing
Finite element models are established for two most common premium threaded connection seal structures
namely
taper/taper seal and sphere/taper seal. According to the evaluation standard
all possible operating conditions were applied to the connections. The seal performance of the two structures was evaluated quantitatively with the seal intensity index. Anti-gluing performance of the two structures under the makeup condition was compared too. Finally
the experimental verification was carried out. The results show that the seal performance and anti-gluing performance of the spherical/taper structure are better than those of the taper/taper structure when the shoulder
thread shape
steel grade are same. Although taper/taper and spherical/taper seal structures can meet the requirements of seal criteria and test standards