Full
Outline
To address the issues of low reliability and poor flexibility associated with existing refueling hose connection schemes，a set of adaptive rotating devices for rotary pipelines was developed.A rotary dynamic sealing scheme suitable for aerospace fuel media was established，which solves the dynamic error compensation problem encountered during the operation of large‑diameter multi‑channel cylindrical sealing rotary devices.Simulation analyses were performed on structural motion，external flow erosion，and internal flow fields，and static and dynamic tests of the device were designed and conducted according to actual service conditions.The results show that no interference was observed within the full 0°~180° rotational range.The structural safety factor of the device under gas flow erosion ranges from 5 to 10，and the maximum flow velocity in both channels of the internal flow field does not exceed 4.5 m/s.Parameters such as the structural strength of the adaptive rotating device and internal flow velocity all meet the specified standard requirements.By adjusting the valve opening，the system can realize full‑flow regulation from 300 L/min to 1 500 L/min.At a flow rate of 1 500 L/min and an upstream pump pressure of 0.2 MPa，the pressure difference across the device is 0.207 MPa.The local pressure drop variation during fuel passage does not affect the pump's operating point，which remains within the high‑efficiency region.The device can be successfully applied to the construction and upgrading of existing refueling pipeline interface systems.This study can provide a new solution for similar problems in the industry.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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