Sealing structure for leading out cable from stern tube and installation method of sealing structure

Abstract

The invention discloses a sealing structure for leading out a cable from a stern tube and an installation method of the sealing structure. The sealing structure comprises the stern tube, a long flangenozzle stub, a short flange nozzle stub and a sealing box, wherein a through hole used for leading out the cable inside the stern tube is formed in the tube wall of the stern tube, a counter-bored hole with a diameter greater than that of the through hole is formed in the outer tube wall of the stern tube, and the counter-bored hole and the through hole are coaxial; and a first end of the long flange nozzle stub is connected into the counter-bored hole in a welded mode, a sealing plate is arranged between the first end of the long flange nozzle stub and the bottom of the counter-bored hole ina clamped mode, and a first hole is formed in the sealing plate. The sealing structure has the advantages that a new way for sealing installation of the sensor cable in the stern tube is provided, the problem that when the sensor cable is installed in the stern tube, stern shaft lubricating oil is prone to leaking is solved, the working stability of a stern shaft sealing system is improved, and the sealing structure can be widely suitable for sealing installation of sensor cables of various ships on stern tubes.

Description

technical field [0001] The invention belongs to the field of design and manufacture of a ship stern shaft system, and in particular relates to a sealing structure and an installation method for leading out cables on a stern tube. Background technique [0002] During the operation of the shafting of the ship, an oil film is formed between the shaft and the bearing. When the ship sails normally, the shafting runs smoothly, the journal and each bearing are in a good lubrication state, and the lubricating oil film is evenly distributed. However, due to the interaction of various factors such as the power change of the main engine of the ship, the vibration of the hull, and the maneuvering of the large turn, the shafting of the ship is unstable and the position of the shaft center is constantly changing. Especially for the stern tube bearing, due to its special position, it needs to bear the large propeller cantilever action, inertial action and hydrodynamic action, and is often ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention provides a sealing structure for cable lead-out on the stern tube and its installation method. Some embodiments of the present invention can solve the problem that the sensor cable hole on the stern tube is difficult to seal

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