Adjustable fixing device of independent cargo hold of ship and installation method for adjustable fixing device

Abstract

The invention discloses an adjustable fixing device of an independent cargo hold of a ship. The device comprises a heat insulation cushion block provided with a vertical through hole, a bolt bar passes through the through hole of the heat insulation cushion block and is fixed on a hull panel, and an adjusting nut and a locking nut are screwed on the bolt bar and respectively jointed to the bottom and the top of the heat insulation cushion block. An installation method for the adjustable fixing device of the independent cargo hold of the ship comprises the following steps of: welding the bolt bar at the installation position on the hull panel; sleeving the through hole of the heat insulation cushion block on the bolt bar, and jointing the through hole to the top of the adjusting nut; rotating the adjusting nut, and adjusting the heat insulation cushion block to a proper height; and screwing the locking nut into the bolt bar and tightening the locking nut. According to the adjustable fixing device and the installation method provided by the invention, adjustment of the height of the cushion block is realized through the adjusting nut; the adjustable fixing device has the advantages of simple structure, convenience for operation and high installation precision; and the integral structure of the hull is not destroyed, local reinforcement on the structure of the ship is not needed, safety and reliability of the hull structure are ensured, and the structural cost is saved.

Description

technical field [0001] The invention relates to a fixing device and an installation method of an independent cargo hold of a ship, in particular to a fixing device and an installation method of a high-temperature cargo hold of an asphalt ship, and belongs to the technical field of ships. Background technique [0002] The asphalt carrier is one of the most technically difficult ship types in the oil tanker series, one of the three major international ship types. Due to the inherent physical characteristics of asphalt, it can only be loaded, unloaded and transported in a high-temperature melting state. Therefore, the temperature during transportation is above 180°C, and the grade requirements are even above 250°C. The fixed installation of heat insulation between the high-temperature asphalt cargo tank and the hull is an important technical problem for asphalt ships. There have been many painful lessons in history that the cargo tank cracked due to improper heat insulation, as...

AI Technical Summary

Problems solved by technology

The main problem of this device is that due to uncertain factors such as ambient temperature, heat dissipation, and pressure balance estimation in the interlayer, it is difficult to control the temperature of asphalt during transportation within a safe range. Burst, leading to major accidents of ship damage and even casualties, poor safety

The adjustable fixing device overcomes the problems such as the complicated installation process of the pad type fixing device, but each installation of a thermal insulation pad needs to drill a mounting hole and two jacking screw holes on the hull, especially according to the ship paint coating The standard requires that the edge of the hole must also be ground into a rounded corner of at least R2. The above-mentioned drilling and grinding of the hole edge will significantly increase the installation workload.

On the other hand, if too many holes are drilled on the hull, it will cause great damage to the stress field of the hull structure and affect the strength and structural stability of the hull. If the hull structure is strengthened, it includes increasing the thickness of the panel and increasing the rib support under the panel , which not only increases the structural cost and installation workload, but also significantly increases the weight of the hull, which affects the transportation capacity of the ship

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