The invention relates to a system for circulating fluid between at least one first body or housing (2) and at least one second body or housing (3), the system comprising an arrangement of multiple fluid connections (4, 4, 4, 4) between, on the one hand, the first body or housing (2) provided with at least two mutually separate openings (5, 5, 5, 5) and, on the other hand, at least one second body or housing (3) also comprising mutually separate openings, each connection establishing a sealed fluid connection between an opening of the first body or housing (2) and an opening of the second body or housing (3), or of one of the second bodies or housings. Said system (1) is characterised in that each of the fluid connections (4, 4, 4, 4) is rigid but hinged, and formed by successive interlocking of a rigid female tubing (7, 7, 7, 7) and a rigid or diabolo pipe (9, 9, 9).

A tubular connection system includes a connector coupled to a tubular segment, the connector having a first bore with a first bore diameter and a mating connector coupled to the connector, the mating connector having a second bore with a second bore diameter. The connector includes a plurality of connector lugs extending into the first bore. The connector also includes a plurality of gaps, respective gaps of the plurality of gaps are arranged between adjacent connector lugs of the plurality of connector lugs in a first alternating pattern. The plurality of connectors lugs are arranged in connector lug rows. The mating connector includes a plurality of mating lugs radially outward. The mating connector also includes a plurality of openings, respective openings of the plurality of openings are arranged between adjacent mating lugs of the plurality of mating lugs. The plurality of mating lugs are arranged in mating lug rows.

A composite fluid transfer conduit. The conduit includes a first end portion, a second end portion and a main body portion between the first and second end portions. At least one of the first and second end portions is an end portion comprising a circumferential groove in a radially outer surface of the fluid transfer conduit, an axial end face, and a transition surface between the axial end face and the circumferential groove. The transition surface is configured such that, for any angle of impact of the end portion with a planar impact surface, a resultant impact force on the end portion is directed away from the circumferential groove.

A floating connector for liquid cooling device includes a housing having an accommodating and adjusting space inside, an opening at the front side, a perforation at the rear side and an inclined inner wall therein adjacent to the opening; and a floating module including a connector having a docking portion positioned in the opening, a positioning portion positioned in the perforation, a base in the middle, a liquid flow channel extending through the docking portion, the base and the positioning portion and an inclined ring portion formed between the base and the docking portion, and an elastic member with two ends thereof respectively abutting the base and the housing mounted around the positioning portion, so that when the elastic member is in an extended state, the inclined ring portion is supported against the inclined inner wall.