DE2144413B2 - FASTENING THE SEALING WALLS AND INSULATING LAYERS IN A LIQUID GAS TANK FOR SHIPS - Google Patents

Abstract

Methane tanker comprises two heat insulating barriers and two fluid-tight barriers, positioned alternately with a fluid-tight barrier innermost and the outermost insulating barrier attached to the hull of the ship. The other fluid-tight barrier is positioned between the two insulating barriers and comprises vertical plates joined together by welding to horizontal metallic strips. One edge of each strip is slidably connected to the outer insulating barrier and the other edge is resiliently connected to the inner insulating barrier.

Description

tical metal profiles, which are arranged in the vertical joints of the insulating blocks. The profiles themselves are attached to brackets that cross the second ίο sealing wall. The mounts are

The invention relates to a fastening of the sealing at the intended locations along horitungs walls and insulating layers in the case of a thermally zontal wooden plank fastened to these. The wood-insulated, non-self-supporting liquefied gas tanks for piles are self-re-ships at the points mentioned, which are supported from a tank inner wall forming around and attached to consoles that are welded to the first sealing wall and to the outside of the ship's hull. Just like the adjoining first thermal insulating layer, the second sealing wall, the first sealing wall and the second thermal insulating wall also consist of panels with bevelled edges, the second insulating layer and the height of which is essentially the same as the layer on the loading space forming walls of the nige of the insulating blocks. The connection of the panels is fastened to the ship and the insulating layers are assembled from one another by welding in the same individual insulating blocks, in the same way as in the case of the second sealing wall. The joints, the stiffening of the plates formed by plates made of thin sheet metal, lie on the first insulating layer of the sealing walls, with parallel joints, which are also beveled towards the inside of the tank and which ensure the mutual displacement between the edges of the plates, between adjacent joints Sealing walls each have a first insulating layer and the first sealing wall fastening strip is welded, which allows up to the.

insulation layer lying behind the sealing wall protrudes and occurs at the insulating blocks by means of a difficulty that arises from the relative Displacements along the edges permitting rigid mechanical connection between the two connections is attached. 30 the sealing walls and the hull of the ship In the French patent specification 1 438 330 is a result; in particular in that the first insulating seal, heat-insulated tank described, which comes with and the corresponding sealing wall over the supporting structure of a ship is integrated and made of the vertical metal profiles, over the brackets two sealing walls connected downstream and over the wooden planks firmly to the double hull consists. A first sealing wall is connected to the 35 of the ship, with the brackets transporting liquefied glass in contact, pass through the second sealing wall while the second sealing wall is tightly connected between and with it. Besides, the most sealing wall and the hull angeord- producing these mechanical connections with net is. Both sealing walls alternate with one another with horizontal planks and vertical profiles in a complicated manner thermal insulation layers. The adorned and therefore expensive, as is the manufacture of the known tank, the second insulation layer consists of a sealed crossing of the second sealing insulation blocks, which is filled with a heat insulating material which connects the planks and the profiles and directly on the rigid double hull or on the brackets.

the double partition wall of the ship by means of screw. The object of the invention is, in the case of a liquefied gas bolt are attached. The bolts are attached to the 45 tank of the type mentioned at the outset - under the Beibehal hull welded on. The insulating blocks are designed to take advantage of the sliding connection between Gas-permeable and arranged so that the intermediate sealing wall and insulating layer - one less allow free gas circulation between them, rigid attachment for the first insulating layer possible. The second sealing wall consists of metal plat- so the second sealing wall and the second insulated, the edges of which peel off towards the interior of the ship.

are bent. The metal plates have a height, this object is thereby achieved according to the invention essentially the height of the insulating blocks relieves that the first insulating layer speaks in between. The edges of the folded plates are perpendicular to the plane of the insulating layer while at the same time fastening an intermediate spring element by means of spaced apart elements pushed fastening strip arranged by welding, on the fastening strip or on connected with each other. The fastening strip, the beveled edges welded to it one edge of which fastened plates of the second sealing wall with the folded plate edges which is welded, with its other edge holding parts attached to the second sealing wall protrudes up to the 60 located behind the second sealing wall.

second insulating layer into it. There it is bent. Different constructions can be used for the and engages in the manner of a rabbet connection in a spring element. at The suspension element is also made of bent over, on the insulating blocks of a construction Second insulating layer attached tape such a, an elastically deformable metal ring with that the thus formed sliding connection mutual 65 an area with the holding part and with the displacements between the sealing wall and the area opposite the insulation with a threaded bolt lierwand is connected along the board edges within limits, which allows the attachment to the insulating light, blocking the first insulating layer. In the-

In this case the elastically deformable ring is shown in FIG. 6 a further perspective view

Level of the fastening strip on which he is attached to the embodiment of the suspension element that is shown here

is brought or in a plane perpendicular to it. made of two adjacent metal lamellas

A second construction consists of elastic stands, which are welded at their ends,
see suspension element between the holding part and 5 fig. 7 shows a detailed section, from 'learn the fastening of the bolt, which can be seen on the insulating blocks of the first movement of the bent edges that attack the first sealing insulating layer, made of two metal lamellae, the plates forming the wall,
are welded at their ends. It is a figure F i g. Fig. 8 is a perspective view of a collapsed lamella in its central zone with the holding part broken tank with a further embodiment and the other welded to the threaded bolt. io shape of the suspension elements,

The plane of contact of the two metal lamellas F i g. 9 in a perspective view the attachment

lies parallel to the planes of the two seals of the metallic fastening strip on the

walls. second insulating layer according to FIG. 8, where the iso-

In a third construction, the spring blocks of the second insulating layer are in section and

element made of a U-shaped spring, 15 of which are shown empty,

one leg is connected to the Haheteil and Fig. 10 shows the sliding connection of the

whose other carries the buken. The F i g. 9,

U-shaped springs on the with the second seal F i g. 11, in section, the U-shaped suspension element wall connected holding parts, preferably element, which in the embodiment according to FIG. 8, either by means of rivets or by means of socket pins, 20 the connection of the second insulating layer with the stigt, which are pushed through the holding parts and one end of the insulating blocks of the first insulating layer through the legs of the U-spring. The reinforcement strip enables and
Socket pins are secured with a split pin. F i g. 12 is a view from the direction XIV-XIV of FIG

Further features within the scope of the invention are FIG. 11th

characterized in the subclaims. 25 The following is based on the drawings, initially

The advantages of the fastening according to the invention in particular on FIG. 1 to 5 and 7, reference genomder first insulating layer on the second sealing men. In the case of the first embodiment wall shown here, there is an additional Durchdringun- variant with 1 is the double load-bearing hull of the gene of the second sealing wall and insulating layer designated ship, on the screw bolt 2 through be avoided. This not only secures the weld. The screw bolts The sealing problem is eliminated, but also that they protrude vertically inwards from the ship's wall. Structural effort is reduced, resulting in a weight- They are welded in vertical rows, with you moderately lighter construction. From these distances within a row the height of a paralein simplifications there is a considerable saving in lelepipedic right-angled insulating blocks 3 for work for the assembly of the various 35 speaks, which is intended to be used together with other Elements of an integrated tank for the ren similar insulating blocks the second insulating transport of liquids. wall 300 to form. The distance between two ne-

In addition, the number of thermal bridges adjacent rows of screw bolts 2

decreased. Such thermal bridges are determined by the length of the insulating blocks 3, which are

those mechanical parts which are ordered in the 40th cause a screw bolt at every corner

Elements of the tank with the supporting double zen 2 is present. The insulating blocks 3 consist of both

Connect the hull of the ship. for example, from wooden boxes, which are a heat-insulating

The invention is contained hereinafter by reference material.

would take on the figures on the basis of several Ausfüh- With 3 α that surface of the insulating blocks 3 Berungsbeispiele is explained in more detail. In the drawing 45 is drawn, which is supported on the fuselage 1. 3 b is the opposite surface shown. Each insulating block 3 has

1 shows a perspective view of a strip 4 on the vertical edges of the surface 3 a,

broken tanks with a first embodiment which are attached to the vertical lateral surfaces of the insulating

the suspension elements, blocks rest and are attached. In connection

F i g. 2 is a perspective view of the fastening of the holding area of four adjacent insulating blocks

partly with the tank according to FIG. 1 in enlarged ken 3 is the passage of the screw

Representation using an elastic me- ning bolt 2 enabling gap. The bolt 2

tallringes as a suspension element, is threaded on its end and sluggish

F i g. 3 shows a detail of a section from which the fastening a nut 2 α and a square

Stiffening the second insulating wall on the supporting 55 washer 5.

The hull of the ship and the between two superposed each washer 5 in this way holds the same resting insulating blocks of the second insulating at the same time four edges of four juxtaposed eggs layer used fastening strips as well as the insulating blocks firmly to the horizontal surfaces Slidable connection can be seen, chen3c and 3d of the insulating blocks 3 are in the ai

F i g. 4 shows a detail from FIG. 1 in enlarged 60 the area 3 b bordering areas strips 6 before

Scale in section, from which the assembly of the holding device is seen, extending over the entire length of the insulating

part on the central fastening strip and the blocks 3 extend. The insulating blocks 3 are along

folded edges can be seen. of the fuselage 1 one above the other between the vertical

F i g. 5, a further row of screw bolts 2 is stacked in a perspective view. You sin

Ausuhrungsform of the attachment of the holding part on 65 by the on the strips 4 of four side by side

the fastening strip according to FIG. 1, in which the arranged insulating blocks attacking Unterlej

Suspension element a fixed in the plane of the fastening washers with respect to the fuselage 1

Strip is arranged elastic ring, see the insulating blocks 3 existing between

Rooms are filled with rock wool in order to improve the thermal insulation blocks 17 similar to the second insulation. layer 300 forming insulating blocks 3 completely.

Between two horizontal rows of insulating blocks there is a composite support 7 at each corner. attack over part of its width between two benfläche. Each washer 16 is clamped for wooden slats 9. The wooden slats 9 extend the fastening of four corners lying next to one another on one edge of the fastening strip 8, which form four insulating blocks 17 of the first insulating length and are fastened there. They are in pieces of history 170 , intended,
cuts, each of which has a reciprocal Absland io with 17a is that area of an insulating block 17 of about 20 cm. Each of the pieces has a designated one which lies opposite the length of approximately 1 m formed from the plates 10. The pieces of the upper and lower sealing wall 100 are opposite. These leren slats are exactly on top of each other, so that the surface is the surface 17 6 opposite. The upper composite beam 7 also contains areas in the horizontal surface of the insulating blocks 17, each with which no lath 9 is present. The central surface »5 17 c and the lower horizontal surface with 17 b fastening strips 8 consist of a stainless steel line. In the area 17 d of each insulating block 17 steel strip of low strength. In this way, the composite supports 7 are provided along the surfaces adjoining the surfaces 17 b by rolling-in zones, which recesses 18 can be stored, since the areas in which no slat 9 would take a band 19 bent by 180 ° are present , a sufficient bend for a solar ao that allow this curling on the opposite surface 17 c. The assembled areas of the longitudinal recess 18 on the insulating block carrier 7 are fastened between the surfaces 3c and 3d of 17 by means of clamps. The bent edge of a fastening stiffener engages in the band 19 of two insulating blocks 3 lying one above the other, with the slats 9 facing the window 21 opposite the slats 6, which thereby faces the fuselage 1 in the fold of the band 19. The fastening strip 8 as is anchored, as shown in FIG. 7 shows. The fastening also runs between the two slats 6 of strips 21 jumps in the direction of the inside of the tank through two insulating blocks 3 arranged one above the other along the horizontal connecting plane of the Isohin. The slats 6 therefore hold the assembling blocks 17 in front of them.

set carrier 7 opposite to the tank interior on the surfaces 17 6 of the insulating blocks 17 is the

directed force back. 30 first sealing wall 220 attached. it consists of

After the second insulating layer 300 is produced by stacking insulating plates 22 made of metal with bent edges 23 blocks 3, the width of the plate is essentially the same as the height of the insulating blocks 17 on the surfaces 3 6 of the insulating blocks 3, so that the bent 10 with bent edges 11 made of metal on edges 23 of the plates 22 placed on both sides of the which form the second sealing wall 100 , where the horizontal connecting planes of the Isobei the distance between the two edges 11 lierblocks 17 protruding Fastening strip of a plate 10 is equal to that distance that 21 are arranged. By means of an automatic Switzerland two fastening strips 8 lying next to one another, the folded edges 23 and the central one of the second insulating layer 300 are separated from one another. Fastening strip 21 is used to produce a

By automatic welding, the encryption is carried out 40 uninterrupted first sealing wall 220 on binding of the folded edges 11 of two exceeds the surfaces 17 6 of the first thermal Isoliercinander disposed plates 10, wherein the intermediate layer 170. The mechanical attachment of the first edges 11 of the tape fasteners 8 of the carrier 7 assembled to the sealing wall 220 is enclosed on the first insulating layer 170 and is carried out slidingly through the fastening strip 21 by welding all three metal sheets with one another and the band 19, which, as just described, are connected to one another. Interlock between two verticals in the manner of a folded joint. Rows of screw bolts 2 are located on the edge of the mounting plate that protrudes towards the inside of the tank. The plates 22 consist of stainless steel.

Stigungsstreifens8 a recess 12 of in the We- In Figs. 2,5,6 and 11, 12 are four different

sentuchen trapezoidal shape.

In each recess 12 a perpendicular to see the holder parts 13 and the messenger 15 is set Body 1 and to the second sealing wall 100 are braced.

Hendes hook part 13 in the middle area of the insulating In F i g. 2 is the holding part 13 m that of the fastening

blocks 3 arranged. The holding part 13 is fastened either 55 to the edges 11 of the plates 10 opposite by welding or by riveting. lying area provided with a hole 24, The last-mentioned solution is shown in FIG. 4, through which a lying in a vertical plane where the connecting rivet is designated by 14. Each ring as the suspension element 25 passes through the The holding part 13 is connected by means of a spring fastening element 25, 26, 28 ring is connected by welding to the bolt 15 verbis 30 or 48, which will be explained in detail below.

connected to a bolt 15 on which a courage- According to FIG. 5, the holding part 13 consists of a

ter 15 a sits. Between the band bent over from a holding part 13. The arch of the fold carries the Fedenmgselement 25, 26, 28 to 30, 48 and reference number 13 a and is used to hold the bolt 15 with the associated washer Fedenmgselementes 26 in the form of a horizontal 16 and the Matter 15 a 65 are formed holding ring , which is arranged through a hole 27 at the end 156 of the insulating block 17 Each insulating block is so bolt 15 passes a deformation of the FeAe

ίο

approximately elements 25 or 26 could result without 42 a strong tensile force perpendicular to the fuselage 1

It must be avoided to destroy the connection first and foremost

Second sealing walls and insulating layers, the two folds of the sliding connection grain

men would. can open. For this purpose, the slat is 43

F i g. 6 shows a third embodiment of a 5 between the sliding connection and the bottom of FIG

Suspension element. The holding part 13 is provided in the recess 50, which is in the insulating block 3

a metal lamella 28 is welded to which one is attached next to that recess in the

second metal lamella 29 is applied. This is at the end of the tape 41 was attached.

of the bolt 15 welded on. The two metal loads are fastened by automatic welding as fins 28 and 29 are welded to one another at their ends 30 and the bevelled edges 11 of the are welded one on top of the other. When a tensile force is exerted on the bolts of the lying plates 10 of the second sealing wall 15, for example when cooling the 100, whereby between the edges 11 of the fastening tanks, the metal lamellae 28 and 29 bend with tension strips 42 and by the opposite one Buckles and form a spring. All three metal sheets are welded in one weld- In this embodiment, the same 15 zone 46 α are combined,
The same advantages as those where there are rings between two consecutive verticals. Rows of bolts 2 is on the fastening

In FIGS. S to 12, a further embodiment is strip 42 a holding part 13 is attached, in which

the attachment of the first insulating layer to the two welding zone 47 α an automatic welding

th sealing wall shown. The arrangement of Fig. 20 follows. The holding part 13 can consist of two on either side of the

Insulating layers and sealing walls is the same fastening strip 42 arranged sheets of best-

as in the first examples and will therefore not hen that both in the welding zone 47 α and in

again described in detail. a parallel welding zone 47 b, which is on the longitudinal edge

On the horizontal surfaces 3 c and 3 d each opposite to the two interconnected BIe

Insulating block 3 of the second insulating layer 300 is next to 25 runs along, are welded to one another. Each-

Ben the surface 3 δ a longitudinal recess 50 attached to the holding part 13 stands over a U-shaped bent

brings. At the point of the longitudinal recess 50 is in the spring 48 with the bolt 15 in connection

Inside the insulating block 3, a reinforcement part 39 for the insulating blocks 17 of the first insulating layer 170

intended. The two longitudinal recesses 50 with its nut 15 a and its washer 16

two insulating blocks 3 are attacked opposite one another.

attached and delimit a space in which the U-shaped spring 48, in the form of an inverted

on the one hand one from a curved band 41 and th U, consists of a plate of one for deep

a curved fastening strip 42 existing temperatures suitable metal with high elastic

Sliding connection and, on the other hand, a lath 43 against the surface. One end of this spring is on a plate

are ordered. The band 41 is fastened with screws 44, the 35 48 α , which serve as a support on both the umo-

through the horizontal surface 3 d of the insulating block genen edges 11 as well as on the holding part 13 arranged

go through it and is embedded in the reinforcement part 39. The plate 48 a is on the holding part 13 with

penetrate, attached to the insulating block 3. Locking pin 48 b attached, the α through the plate 48

The one facing the outside of the insulating block 3 and the holding part 13 go through and through each

Edge of the metal strip 41 is 180 ° inwards 4 ° because a cotter pin 48 c made of stainless steel in place

bent over. The metallic fastening strip 42 ment be held. The U-shaped spring 48 is

engages in the bend of the metal strip 41 with a deformable shape at right angles to the fuselage 1. Through this

a corresponding bend going through 180 ° causes a certain movement of the first insulating layer

a. The two interlocking bends form 170 relative to the second insulating layer 300 in this

which enables a sliding connection for attaching the fastening 45 direction. The execution and attachment

Stigungsstreifens 42 on the insulating blocks 3 of the branch of such an elastic Federungsclcüien-

th insulating layer 300. To the fastening strip tes is particularly simple and cheap.

For this purpose 2 sheets of drawings

Claims (16)

Patent claims: 1. Attachment of the sealing walls and insulating layers in the case of a thermally insulated, not self-supporting liquid gas tank for ships, consisting of a first tank inner wall Sealing wall as well as the first thermal insulating layer adjoining it to the outside, second sealing wall and second thermal insulating layer and in which the second insulating layer is attached to the walls of the ship forming the hold and the insulating layers are composed of individual insulating blocks against which the sealing walls formed by plates made of thin sheet metal rest, wherein between adjacent, parallel, to the inside of the tank beveled edges of the Panels of the sealing walls each have a fastening strip is welded into the insulating layer behind the sealing wall protrudes and at their IsolierWöcken by means of a shift along the edges allow Sliding connection is attached, characterized in that the first insulating layer (170) with the interposition of those acting perpendicular to the plane of the insulating layer Suspension elements (25, 26, 28 to 30, 48) by means of spaced apart fastening strips (8, 42) or on the folded edges (11) of the plates welded to it (10) the second sealing wall (100) attached holding parts (13) is attached to the second sealing wall (100). 2. Fastening according to claim 1, characterized in that the spring elements (25, 26, 28 to 30, 48) for connection to the first insulating layer (170) are arranged on one side opposite the holding part (13), up to approximately the first sealing wall (220) have bolts (15) provided with a thread and a nut (15 a) and washer (16). 3. Fastening according to claim 2, characterized in that that the suspension element (25, 26, 28 to 30, 48) consists of an elastic metal ring (25, 26) exists. 4. Fastening according to claim 3, characterized in that the metal ring (26) in the Level of the fastening strip (8, 42) is arranged or in a perpendicular thereto Level. 5. Fastening according to claim 2, characterized in that the suspension element (25, 26, 28 to 30, 48) made of two parallel metal lamellas welded to one another at their ends (30) (28, 29), one of which (28) in its central area with the holding part (13) and the other (29) is connected in its central area to the bolt (15), and that the contact plane of the two metal lamellae (28, 29) parallel to the plane of the first (22 ') and second (10 ') sealing wall runs. 6. Fastening according to claim 2, characterized in that the suspension element (25, 26, 28 to 30, 48) consists of a U-shaped spring (48), one leg of which is connected to the holding part (13) is connected and the other leg carries the bolt (15). 7. Fastening according to claim 6, characterized in that for connecting the U-shaped spring (48) to the holding part (13), the U-shaped spring (48) has a plate-shaped projection (48 a) which is secured by means of socket pins (48 b ) is attached to the holding part (13), the socket pins (48 b) being secured by a split pin (48 c). 8. Fastening according to claim 6, characterized in that the U-shaped spring (48) on attached to the holding parts (13) connected to the second sealing wall (100) by rivets is. 9. Fastening according to one of claims 2 to 8, characterized in that the washer (16) rests on the first insulating layer (170) in a recess provided at the corners of the rectangular insulating blocks (17) and that each washer (16) is applied simultaneously attacks four corners of adjacent insulating blocks (17). 10. Fastening according to one of claims 1 to 9, characterized in that the holding parts (13) the fastening strip (8, 42) and the beveled edges (11) welded to it like a fork overlap and are connected to it by welding or riveting. 11. Fastening according to one of claims 1 to 10, characterized in that the fastening strip (8) on its edge facing the ship's wall (1) carries two slats (9), the two further slats (6) attached to the insulating blocks (3) of the second insulating layer (300), between which the fastening strip (8) protrudes, reach behind. 12. Fastening according to claim 11, characterized in that that the fastening strips (8) retaining slats (6) made of wood sections consist of the same lengths, which are superimposed in pairs. 13. Fastening according to one of claims 1 to 10, characterized in that the fastening strip (42), as known per se, is bent at one edge by about 180 ° and with this bend into a likewise bent at the edge of the horizontal surface ( 3 d) a band (41) attached to an insulating block (3) engages in the manner of a folded joint, and that the sliding connection thus formed is inserted into a longitudinal recess (50) which is located on the edge of the horizontal surfaces (3c, 3d) of the insulating blocks (3 ) the second insulating wall (300) is provided, with a horizontal slat (43) also being inserted, which serves as a support for the sliding connection. 14. Fastening according to claim 13, characterized in that the insulating blocks (3) of the second insulating layer (300) in their interior in the region of the longitudinal recess (50) have reinforcing pieces (39) which extend in the longitudinal direction the insulating blocks (3) extend. 15. Fastening according to claim 14, characterized in that the bent, part of the sliding connection forming band (41) is fastened by screws (44) to the insulating blocks (3) which through the edge of the horizontal surface (3d) through into the Penetrate the reinforcement piece (39). 16. Fastening according to one of claims 1 The first insulating layer is also made up of to 15, characterized in that the fastening heat insulating material filled insulating blocks together supply strips (8, 42) made of a steel strip from men. Here, too, precautions are similar to those Steel with a high nickel content is made. gen for the second insulating wall taken to one 5 to allow free gas circulation. The insulating blocks are screwed onto a series of