RU2108262C1 - Ship's double side - Google Patents

Abstract

FIELD: shipbuilding; designing of double side of ships. SUBSTANCE: double side includes inner and outer sides and interside diaphragms with through cuts which are divided into cells by horizontal diaphragms. Vertical diaphragms are made from sheets whose thickness is equal to (0.005-0.009)B and through cuts in center parts of diaphragm cells are equal to (0.25-0.75)B, where B is distance between sides. Diaphragms are connected by weak weld. EFFECT: enhanced power intensity of deformation of double side without increase of its sizes; enhanced safety of transportation of ecologically harmful substance in case of collision. 3 dwg

Description

 The invention relates to shipbuilding and for the construction of hulls of tankers, chemical carriers and other vessels intended for the transport of environmentally hazardous substances.

 Known adopted for the prototype as the closest analogue is the double side of the vessel, containing the outer side, inner side and vertical double-sided diaphragms with through cuts, divided into cells by horizontal double-sided diaphragms, connected at the points of separation by a weld [1].

 The well-known double side is characterized by excessive rigidity and stability of vertical inter-side diaphragms. In the process of deformation, only a part of the side is involved between two adjacent vertical diaphragms, in connection with which, in an emergency collision of vessels at a speed of 3-5 knots, typical when maneuvering in the port water area or in narrow places, both the outer and inner sides can be destroyed, resulting in to water pollution by environmentally hazardous substances.

 The invention is aimed at solving the problem of improving safety during the transportation of environmentally harmful substances in the event of an accidental collision of vessels without increasing the size of the double-sided ties or the introduction of additional ties.

 The technical result is achieved by the fact that in the known double side of the vessel, characterized by the above features, the vertical diaphragms are made of sheets with a thickness of (0.005-0.009) B, where B is the distance between the outer and inner sides, while through cutouts are made in the middle part of the diaphragm cells size (0.25-0.75) V, and the joints of the vertical and horizontal diaphragms are made by a weakened weld.

 Due to the implementation of vertical diaphragms of reduced thickness and with cuts, their compression resistance in their plane decreases. Making connections provides the ability to tear off vertical diaphragms from horizontal ones without cracking in them.

 In FIG. 1 shows a general view of the double side in a perspective view; in FIG. 2 and 3 are diagrams of double-side deformation before and after crushing of vertical diaphragms, respectively.

 The double side (Fig. 1) consists of the outer side 1 and the inner side 2, connected by vertical double-sided diaphragms 3, divided into cells by horizontal double-sided diaphragms 4. In the middle part of the cells of vertical diaphragms 3, through cut-outs are made 5. Vertical diaphragms 3 are connected to horizontal diaphragms 4 a weakened weld 6.

 The increased protective effect of the double side in an emergency collision is implemented as follows. In the interaction (Fig. 2, 3) of the double side with the bow of the ramming vessel 7 at the first stage of deformation (Fig. 2), the outer side 1 is deformed. Due to the fact that the stability of the vertical diaphragms 3 is specially reduced, even before the side 1 breaks, stability is lost vertical diaphragms 3, their separation from the horizontal diaphragms 4 along the weakened weld 6 and their crushing. After that, in addition to the side of the bead 1 between two adjacent vertical diaphragms, which was deformed at the first stage, the sections adjacent to it on both sides are also involved in the deformation process (Fig. 3). Due to this, the deformation ability of the bead 1 significantly increases, and its destruction occurs with significantly greater energy absorption than in the scheme of FIG. 2. A similar effect is realized when the inner side 2 is deformed.

 The use of the invention will increase the energy intensity of deformation of double-sided structures by more than two times, which corresponds to an increase in the critical speed of the ramming vessel, at which anti-ram protection prevents the outflow of environmentally hazardous cargo by about one and a half times.

Claims (1)

 The double side of the vessel containing the outer side, inner side and vertical double-sided diaphragms with through cuts, divided into cells by horizontal double-sided diaphragms, connected at the points of separation by a weld, characterized in that the vertical diaphragms are made of sheets with a thickness of (0.005 - 0.009) B, where B is the distance between the outer and inner sides, while through cutouts are made in the middle part of the diaphragm cells of size (0.25 - 0.75) B, and the connections of the vertical and horizontal diaphragms are made weakened by seam.

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