Abrégé

A burst-proof optical cable comprises a cable core (1), an inner sheath (2), a protective layer (3) and an outer sheath (4). The cable core (1) is internally provided with a plurality of parallel optical fibers (5). The inner sheath (2), the protective layer (3) and the outer sheath (4) enclose the cable core successively from inside to outside. A shield layer (6) is arranged between the inner sheath (2) and the protective layer (3). By using steel wire mesh as the shield layer (6), the optical cable has good burst-proof efficacy, increased ductility and malleability, good telescopic effect, and prolonged service life, and is less susceptible to damage.

Classes IPC  ?

• G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p. ex. câbles de transmission optique

Abrégé

A parallel-structure, flame-retardant optical cable comprises a central member (1), a protective layer (2), a flame retardant layer (3), and an outer sheath (4). An optical fiber core wire (5) is arranged in the central member (1). Tensioning members (6) are arranged in parallel at upper and lower sides of the central member (1). The tensioning members (6) are enclosed by the protective layer (2), and the flame retardant layer (3) is arranged between the protective layer (2) and the outer sheath (3). The provision of the flame-retardant layer can effectively improve the flame retardant effect of optical cable and prolong service life. Steel wire mesh is additionally arranged to enhance the wear resistance of the cable, protect the optical fiber core wire, and increase stability of the optical cable.

Classes IPC  ?

• G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p. ex. câbles de transmission optique

Abrégé

A smart optical fiber cable comprises a cable core (1) and an outer protective jacket (2) covering an outer surface of the cable core. The cable core comprises a twisted optical unit (3), insulated wire core (4), and communication cable (5). A shielding layer (6) is disposed between the cable core and the outer protective jacket. A protective layer (7) is configured to cover an outer side of the cable core. Dry fillers (8) are disposed in a gap in the cable core. In the smart optical fiber cable, the optical fiber unit, insulated wire core, and the communication cable are physically separated to prevent interference between transmission signals, ensuring quality and security of output signals, and reducing investment in network infrastructure.

Classes IPC  ?

• H01B 7/00 - Conducteurs ou câbles isolés caractérisés par la forme

Abrégé

A V-cone flow meter, comprising a measuring tube (1), a V-cone throttling element (2), a positive pressure-taking tube (7), and a negative pressure-taking tube (8). The V-cone throttling element (2) is provided within the measuring tube (1); the V-cone throttling element (2) is fixed within the measuring tube (1) by means of a first support (3) and a second support (4); both the front and rear ends of the measuring tube (1) are provided with connecting flanges (10), respectively; the connecting flanges (10) are fixed by bolts (11); the positive pressure-taking tube (7) and the negative pressure-taking tube (8) are separately provided on the upper end of the measuring tube (1); the positive pressure-taking tube (7) is connected to the front end of the V-cone throttling element (2); the negative pressure-taking tube (8) is connected to the rear end of the V-cone throttling element (2). The V-cone flow meter has stable measuring performance, guarantees the precision during the measuring process, and employs a simple pressure-taking approach; moreover, the V-cone flow meter is well-designed and ease to operate, thereby reducing the pressure and enhancing the service life.

Classes IPC  ?

• G01F 1/34 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en mesurant la pression ou la différence de pression

Abrégé

A sliding-type propeller steering mechanism, comprising a base (1), hydraulic cylinders (3), a rudder stock (2), a rudder angle indicator (9), and stroke limiters (12). A plurality of hydraulic cylinders (3) is provided on both sides of the base (1); the rudder stock (2) is provided at the center of the base (1); crosshead bearings (6) are separately provided at both ends of the rudder stock (2); a crosshead trunnion (5) is provided in each crosshead bearing (6); the crosshead bearings (6) are connected to rudder tillers (7); sliding blocks (11) are provided on both sides of each rudder tiller (7) and are work in concert with the rudder tiller (7); the sliding blocks (11) are fixedly mounted on guide plates (8); the stroke limiters (12) are mounted on both sides of each guide plate (8); and the rudder angle indicator (9) is fixedly mounted on one side of the rudder stock (2). The present invention reduces damages to the sealing performance or valves of the hydraulic system caused by a change in internal oil pressure, improves the operating performance, and prolongs the service life of steering rotary supports and the service life of rudder propellers. In addition, the present apparatus is compact in structure and easy to maintain.

Classes IPC  ?

• B63H 25/12 - Appareil à gouverner à transmission par fluide