Fig. 1. Schematic diagram of isobaric balance principle

Fig. 2. Pressure-resistant underwater mating and unmating tests for underwater wetmateable hybrid optoelectronic connectors

Fig. 3. The state of plug and socket before in plugging

Fig. 4. Rotating process of rotary seal

Fig. 5. Multi-level guidance accurate docking

Fig. 6. Maximum offset mating and unmating

Fig. 7. Structure and process diagram of visual inplace identification

Fig. 8. Operating diagram of non-contact optical contact

Fig. 9. Schematic diagram of optical fiber core adjustment

Fig. 10. The diagram of Oring seal

Fig. 11. The end extrusion of rubber capsule

Fig. 12. Contact pressure between Oring and wall under different clearances m

Fig. 13. Hydrostatic pressure test

Fig. 14. Schematic diagram of dynamic seal structure

Fig. 15. Schematic diagram of sealing contact parts

Fig. 16. Stress nephogram of insertion process

Fig. 17. Schematic diagram of leakage principle

Fig. 18. Relation between leakage G and speed change v

Fig. 19. Relationship diagram of medium differential pressure P′ and leakage G

Fig. 20. Leakage G of connector after reciprocating plugging and unplugging at different plugging and unplugging speeds v and differential medium pressure P′

Fig. 21. Measurement of the insulation resistance of the internal silicone oil after underwater mating and unmating tests