JP5746346B2 - Impervious wall structure - Google Patents

Description

  The present invention relates to the field of manufacture of corrugated metal film tanks, in particular tanks designed to contain cold liquids.

  In one metal membrane tank technology, particularly in the field of liquid natural gas (LNG) transport and storage, the impervious membrane is a first row corrugation on the inner surface and a second row corrugation perpendicular to the first row corrugation. It is comprised with the corrugation impermeable board provided with these. In this type of corrugation, the metal film is specifically configured to absorb the pressure resulting from thermal contraction, the hydrostatic pressure of the load, the dynamic pressure caused by the operation of the load, and the deformation of the hull in the case of floating structures. Has elastic deformation performance. However, this type of corrugation is vulnerable to overpressure forces.

  In order to improve the resistance of this type of membrane to pressure, FR 2936784 proposes to insert a reinforcing element under the corrugation between the membrane and its support. One proposed reinforcing element is fixed in the membrane undercut.

French Patent No. 2936784

  According to one embodiment, the present invention provides an easy-to-install assembly suitable for manufacturing impermeable wall structures. The assembly includes an impermeable metal plate, an elongated reinforcing member, and a securing member. The metal plate includes a plurality of parallel first row corrugations and a plurality of parallel second row corrugations (6) that intersect the first row corrugation at the position of the intersection. The first row corrugation and the second row corrugation protrude from the inner surface (2) of the metal plate. An elongated reinforcing member is provided in one of the first and second row corrugations on the outer surface of the metal plate facing the inner surface to increase resistance to the pressure of the metal plate. The fixing member holds the reinforcing member in the corrugation in cooperation with the mounting unit attached to the outer surface of the metal plate and the longitudinal end of the reinforcing member at the position of the corrugation intersection where the reinforcing member is held. Holding unit.

  According to certain embodiments, this type of assembly has one or more of the following features.

  According to one embodiment, the fixing member has a plurality of holding units, for example 2-4, which can cooperate with each end of a plurality of reinforcing members, for example 2-4. The reinforcing member is held by a plurality of corrugation segments at the intersections of the places where the fixing members are attached.

  According to one embodiment, each holding unit can cooperate with the end of the reinforcing member, with the holding unit supporting the end of the reinforcing member in a direction perpendicular to the metal plate.

  According to one embodiment, each holding unit is fixed to the end of the reinforcing member in a fixed state in which the holding unit fixes the reinforcing member with the fixing member so that the reinforcing member is held by the metal plate only by the effect of the fixing member. Can cooperate with the department.

  According to one embodiment, each holding unit and each reinforcing member are configured to be able to cooperate in the two cooperation states described above. Thus, the most appropriate cooperation state can always be selected according to the characteristics of the application concerned, always using a single set of fixing members and reinforcing members.

  According to one embodiment, each holding unit of the fixing member is arranged at the end of an arm connected to the mounting unit. The arm is arranged such that with the fixing member attached, the reinforcing member extends in a corrugation that must be held by the holding unit.

  According to one embodiment, each arm of the fixing member has a positioning unit with a contour designed for the lateral contour of the corrugation of the metal plate. The positioning unit can cooperate with the metal plate at the position of the side wall of the corrugation to position the arm in the corrugation with the fixing member attached.

  According to one embodiment, each holding unit is configured by a protrusion that extends in the longitudinal direction by corrugation of a metal plate. In a state in which the fixing member is attached to the metal plate, the reinforcing member has a groove that opens at the position of the end portion in the longitudinal direction of the reinforcing member and accommodates the protrusion of the holding unit.

  According to one embodiment, the protrusion of each holding unit has a thickness portion that can cooperate with the longitudinal end face of the reinforcement member to stop the reinforcement member in the longitudinal direction in relation to the protrusion. .

  According to one embodiment, in order to firmly fix the reinforcing member to the fixing member, the thickness portion of the protrusion is formed into the groove of the reinforcing member by elastic deformation of the thickness portion and / or the groove of the reinforcing member. Press fit. According to one embodiment, this type of forced engagement can be used to obtain the fixed state described above.

  According to one embodiment, the fixing member has a stop unit that can cooperate with the longitudinal end face of the reinforcing member to limit the engagement of the protrusion with the groove beyond the thickness.

  According to one embodiment, a single structural element provides both the stop unit described above and the positioning unit described above.

  The groove of the reinforcing member can be manufactured in various ways. According to one embodiment, the groove of the reinforcing member is a longitudinal groove that is recessed on the outer surface of the reinforcing member configured to face the metal plate.

  According to one embodiment, the attachment unit has a head that can be attached to the outer surface of the metal plate by an elastic gap in the undercut of the metal plate at the location of the intersection of the corrugations.

  According to one embodiment, the fixing member has a main body connected to each holding unit and at least one rod connecting the head to the main body and providing a space therebetween. This type of space helps the elastic deformation of the rod to accept various shapes at different intersections of the metal plates.

  According to one embodiment, the rod has an inclined shape that is inclined so as to become narrower from the main body of the fixing member toward the head. This type of shape can facilitate the insertion of the head in the relief groove of the metal plate.

  According to one embodiment, the assembly further comprises a second securing member. The second fixing member has a mounting unit attached to the outer surface of the metal plate at a position of the second intersection of the corrugation where the reinforcing member must be held, and in order to hold the reinforcing member in the corrugation, A holding unit cooperating with the second longitudinal end of the reinforcing member, and the reinforcing member is designed with a distance between each holding unit of the two fixing members attached to the metal plate The reinforcing member is held by the metal plate between the two fixing members by cooperating with the two holding units.

  According to one embodiment, the two fixing members are formed in the same way, simplifying the manufacture of parts and inventory management of the assembly.

  According to one embodiment, the reinforcing member is composed of a contour body with a constant cross-sectional shape. This type of embodiment can simplify the formation of the reinforcing member, in particular by extrusion of a suitable material. According to an embodiment, the reinforcing member is a composite made of a metal material such as aluminum or a metal alloy, a plastic material such as polyethylene, polycarbonate, polyetherimide, or polystyrene foam, or a fiber such as glass fiber bonded with a plastic resin. Formed from material.

  According to one embodiment, the fixing member, the reinforcing member, and the metal plate of the above-described assembly are formed separately from each other and in a specific step of the construction of impermeable walls designed to be used. Can be assembled together. The position of this step in the process of impermeable wall configuration can be selected as a whole, depending on site configuration and logistics constraints.

  According to one embodiment, the present invention also provides a method for manufacturing an impermeable wall structure. The method includes a plurality of parallel first row corrugations projecting from an inner surface of the metal plate and a plurality of parallel first row corrugations projecting from the inner surface of the metal plate and intersecting the first row corrugation at positions of intersections. A step of supplying to the parallel second row corrugation, and a step of disposing a fixing member that includes an attachment unit and a holding unit and attaches the attachment unit to an outer surface facing the inner surface of the metal plate at one position of the intersection. And arranging the elongated reinforcing member in the corrugation segment adjacent to the intersection on the outer surface of the metal plate so that the longitudinal end of the reinforcing member cooperates with the holding unit.

  This type of method can be used in particular to make an impervious wall structure suitable for the production of pressure resistant impermeable membranes. In certain embodiments, this type of method may have one or more of the following features.

  According to an embodiment, the first fixing member includes a mounting unit and a holding unit, and the second fixing member for mounting the mounting unit to the outer surface of the metal plate at the position of the second intersection is attached to the first fixing member. Disposing near the intersection, wherein the reinforcement member is disposed in the corrugation segment extending between the two intersections, and between the two fixing members, the two of the reinforcement members The metal plate is held by the cooperation of the end portion in the longitudinal direction and the two holding units.

  According to another embodiment, the method further comprises the step of fixing the end of the reinforcing member to the holding unit so that the reinforcing member is held on the metal plate only by the effect of the fixing member.

  In this case, the reinforcing member can be provided in a corrugation segment extending between the intersection of the place where the fixing member is attached and the end of the metal plate. Also, the reinforcing member can extend from the end of the metal plate so that it can engage with the corrugation of the adjacent metal plate.

  This type of method can be used to fix the reinforcing member with one, more than one or all of the corrugations of the metal plate, in particular depending on the conditions for reinforcement of the metal plate.

  According to one embodiment, the method comprises the steps of attaching a fixing member comprising an attachment unit and four holding units to the outer surface of the metal plate at all intersections of the metal plate; By holding the two longitudinal ends of the reinforcing member in cooperation with two holding units of two fixing members attached at the position of the two intersections so as to hold the reinforcing member, And arranging reinforcing members on all the corrugation segments extending therebetween.

  According to one embodiment, the method includes the step of disposing the reinforcing member in all corrugation segments extending between an end of the metal plate and an intersection adjacent to the end of the metal plate; The end of the reinforcing member is fixed to the holding unit of the fixing member attached at the position of the corresponding intersection so that the member is held by the metal plate only by the fixing member extending from the end of the metal plate. Further comprising the step of:

  According to one embodiment, the present invention also provides an impermeable insulating container provided on the support structure. The container has a thermal barrier and an impermeable barrier designed to contact the product contained in the container, and the impermeable barrier comprises the above-described assembly that is easy to install. . This type of container can be formed as part of a land storage facility, for example, to store LNG. The vessel can also be attached to floating structures, coastal structures, or deep-sea structures, especially methane tankers, floating storage and re-gasification units (FSRU). It can be attached to floating products and transported storage units (FPSO).

  According to one embodiment, a ship for transporting cold liquid is composed of a double hull and the above-mentioned container provided in the double hull.

  According to one embodiment, the present invention also provides a method for loading and unloading this type of ship. The cold liquid is carried through an insulated pipe from the floating or land storage facility to the ship's container or from the ship's container to the floating storage facility or land facility.

  According to one embodiment, the present invention also provides a cold liquid transport system. The system includes the above-described ship and an insulated pipe arranged to connect the vessel attached to the ship's hull to the floating storage facility or land storage facility, from the floating storage facility or land storage facility to the vessel of the ship, Or it is comprised with the pipe which conveys cold liquid through an insulated pipe from the container of a ship to a floating storage facility or a land storage facility.

  The concept according to the present invention is to provide a reinforcing device to reinforce the corrugated metal impermeable membrane against pressure. Certain aspects of the present invention are impermeable membranes that can be easily manufactured, easily attached to an impermeable membrane, have corrugations of different dimensions, and / or have a limited inventory of parts. Based on the concept of providing a reinforcing device that is simple to apply to.

  Also, certain aspects of the present invention are based on the concept of pre-fabricating an impermeable wall structure that is suitable for manufacturing pressure resistant corrugated metal impermeable membranes. Also, a particular aspect of the invention is based on the concept of manufacturing this type of impermeable wall structure, which is a modular assembly and can be easily combined with each other.

  The following description of the embodiments of the present invention will make the present invention easier to understand, and other objects, details, features and advantages of the present invention will be more clearly understood. The description of the embodiments of the present invention has been made for the purpose of explanation with reference to the accompanying drawings, and is not intended to limit the scope of the present invention.

FIG. 6 is a perspective view showing a corrugated metal plate that can be used to produce an impermeable wall. It is a perspective view which shows the cross-shaped fixing member which can be attached to the outer surface of the metal plate of FIG. 1 in the position of the intersection of corrugation in order to hold | maintain a reinforcement member. It is a perspective view which shows the reinforcement member suitable for reinforcing the high corrugation of the metal plate of FIG. It is a perspective view which shows the reinforcement member suitable for reinforcing the low corrugation of the metal plate of FIG. It is a fragmentary sectional view of the metal plate in alignment with the VV line in FIG. 1, and shows the fixing member in FIG. 2 attached to the metal plate by elastically pushing into the escape groove of the metal plate at the position of the intersection. It is a fragmentary perspective view of the outer surface of the metal plate of FIG. 1 provided with a reinforcing member held in corrugation by two fixing members cooperating with two ends. It is an enlarged view of VII of FIG. It is a fragmentary top view of the limit area | region of the outer surface of the metal plate of FIG. 1 provided with the reinforcement member hold | maintained by corrugation by the fixing member which cooperates with one edge part. FIG. 2 is a cross-sectional view of an intersection region between two metal plates of FIG. 1, showing a cross-section on the central surface of a high corrugation of a metal plate and having a reinforcing member held in the corrugation by a fixing member cooperating with one end. It is a schematic sectional explanatory drawing of the methane tanker container which consists of an impermeable wall manufactured from the metal plate of FIG. 1, and the terminal for unloading of the container. FIG. 3 is a quarter cross-sectional view showing a head for fixing the fixing member of FIG. 2 attached to the relief groove of the metal plate of FIG. 1. It is the figure which looked at FIG. 11 from the angle which rotated about 90 degree | times. It is a top view of the reinforcement member hold | maintained by corrugation by two fixing members in cooperation with two edge parts. FIG. 2 is a view of the outer surface of the metal plate of FIG. 1 with reinforcing members held in all corrugations by two fixing members cooperating with the two ends of the reinforcing members.

  Referring to FIG. 1, the corrugation metal plate 1 has a first row of low corrugations 5 and a second row of high corrugations 6 on its inner surface 2. The low corrugation 5 intersects the high corrugation 6 at a right angle. Note that the terms “high” and “low” used here mean that the height of the corrugation 5 in the first row is lower than the corrugation 6 in the second row. At the position of the intersection 3 between the low corrugation 5 and the high corrugation 6, the low corrugation 5 is discontinuous. In other words, the low corrugation 5 is interrupted at the folded portion 4 that extends to the tip projection 7 of the high corrugation 6 by the projection on the tip projection 8 of the low corrugation 5. This shape is shown in FIG.

  At the position of the intersection 3, the tip protrusion 7 of the high corrugation 6 has a pair of concave corrugations 9. The concave corrugation 9 is provided on both sides of the tip projection 8 of the low corrugation 5, and the concave surface faces the inner surface. The high corrugation 6 also has concave depressions 10 on both sides of the folded portion 4 at the positions of the respective intersections 3. The concave depression 10 has a concave surface facing the inner surface 2 of the corrugated metal plate 1 and a double bend. The first bend shown in FIG. 1 is about an axis perpendicular to the average plane of the corrugated metal plate 1. The second bend shown in FIG. 5 is about an axis perpendicular to the plane of FIG. As shown in FIG. 5, the concave recess 10 causes the folded portion 4 to expand in the direction of the base portion 12 of the folded portion 4, that is, to form a relief groove. This shape can be used in some embodiments to elastically push the fixing member at the base of the turn-up 4.

  As an example, the low corrugation 5 has a height of about 36 mm defined between the tip protrusion 8 and the surface of the corrugation metal plate 1 and a width of about 53 mm at the base of the low corrugation 5. The high corrugation 6 has a height of about 54.5 mm defined between the tip projection 7 and the surface of the corrugation metal plate 1 and a width of about 77 mm at the base of the high corrugation 6.

  Moreover, as an example, the corrugation metal plate 1 is made of stainless steel or an aluminum sheet, can be formed by punching, and has a thickness of about 1.2 mm. Considering that the thickened portion of the corrugated metal plate 1 increases the cost and usually increases the rigidity of the corrugation, it is possible to use other metals or alloys, and to make other thicknesses. Is also possible. Further, in the case of using an impermeable film for a cold liquid, a specific flexibility of the corrugated metal plate 1 is required in order to enable thermal contraction without rupturing the impermeability.

  The corrugated metal plate 1 is very suitable for forming an impermeable film of a large capacity container, for example, an impermeable film for cold liquid. However, the hydrostatic pressure provided by the liquid material contained in the container, for example liquefied gas, causes substantial plastic deformation of the corrugation, and in particular the outer surface of the high corrugation 6 that is spaced from the intersection 3. To generate compression. Also, in this type of container that is integrated with the ship bearing structure, during the transportation, the liquefied gas expansion activity causes a dynamic pressure fluctuation that substantially undergoes plastic deformation by corrugation. . This type of deformation causes a deterioration of the mechanical strength of the metal plate that is substantially subjected to thermal shrinkage. For example, it occurs when liquid methane is contained in a container, and as a result, impairs the impermeability of the metal plate, particularly in the weld region at the junction between the different plates of the impermeable wall. Provided herein below is a reinforcing member configured to prevent or limit this type of plastic deformation.

  Referring to FIG. 3, a reinforcing member 15 configured to be inserted into the high corrugation 6 on the outer surface of the metal plate 1 is shown. The reinforcing member 15 has an outer shape with a certain cross section. The external shape is configured such that a part having a required length can be easily obtained by cutting a long external body. This type of outer body can in particular be made by extrusion.

  The reinforcing member 15 has a semi-elliptical dome-shaped thin upper wall 16. The upper wall 16 is substantially adapted to the shape of the high corrugation 6 and is formed to face the metal plate 1. When the reinforcing member 15 is made of a material having a thermal performance different from that of the metal plate 1, in order to support the corrugation wall efficiently at a useful temperature, for example, −162 ° C. against liquefied natural gas (LNG). The dimension of the reinforcing member 15 must take this difference into consideration.

  The lower wall 17 of the reinforcing member 15 is formed to face the metal plate 1 and has a flat shape so that it can be supported by the support surface. For example, in the case of an LNG container, the support surface is formed by the inner surface of a thermal insulation barrier. The groove 18 having a rectangular cross section is recessed in the vertical direction in the middle of the lower wall 17.

  In the reinforcing member 15, a space is formed between the upper wall 16 and the lower wall 17, and the reinforcing member 15 includes only excellent support ribs. That is, the reinforcing member 15 includes two inclined ribs 19 that intersect at the position of the center portion 22 and short ribs 21 that connect the center portion 22 to the base of the groove 18. The inclined rib 19 extends from the connection angle 20 of the upper wall 16 and the lower wall 17 to a point located substantially in the middle along the height of the opposing upper wall 16.

  Since the surface area of the low corrugation 5 is smaller than the surface area of the high corrugation, the low corrugation 5 is more resistant to pressure. However, it is further advantageous to reinforce them by using reinforcing members. Referring to FIG. 4, a reinforcing member 115 configured to be inserted into the low corrugation 5 on the outer surface side of the metal plate 1 is shown. Note that components that are similar or identical to components of the reinforcing member 15 have the same reference numbers plus 100. The reinforcing member 115 differs from the reinforcing member 15 in that, in addition to its smaller dimensions, there is no substantially flat bottom wall. For this reason, the reinforcing member 115 is opened between the two connection angles 120, and the groove 118 is formed by two parallel longitudinal ribs 121 below the center portion 122. Two parallel longitudinal ribs 121 extend on both sides of the central symmetry plane of the reinforcing member 115.

  Referring to FIG. 2, a cross-shaped fixing member 30 is used to fix the reinforcing members 15 and 115 to the low corrugation 5 and the high corrugation 6 of the metal plate 1. The fixing member 30 is composed of a central body 31 having a generally rectangular cross section and a hollow cylindrical cross section. On the four outer surfaces of the central body 31, arms that are substantially perpendicular to the axis of the central body 31 are provided. The fixing member 30 can cooperate with the reinforcing member and serves to hold the reinforcing member in the corresponding corrugation of the metal plate 1 as described below.

  The two rods 32 are connected to the two short side surfaces 37 of the central body 31 and extend from the upper surface of the central body 31. Further, the two rods 32 are formed at an angle that slightly inclines toward the axis of the central body 31, for example, an angle that approaches each other without contact. The rod 32 has a shape inclined toward the end away from the central body 31. The ends of the two rods 32 are connected by a rod 33. The rod 33 extends perpendicularly to the axis of the central body 31 and has a cross section wider than the end of the rod 32. For example, the cross section of the rod 33 is substantially equal to the width of the base of the rod 32.

  As described above, the bar 33 forms a fixed head that is elastically pushed into the escape groove of the folded portion 4 at the position of the intersection 3 of the metal plate 1. For this reason, the bar 33 is formed with a slightly larger cross-sectional size than the narrowest portion of the folded portion 4.

  The fixing member 30 is formed by putting a plastic resin into a mold.

FIG. 5 shows the fixing member 30 attached to the metal plate 1. In order to perform this attachment, the fixing member 30 is initially arranged so that the bar 33 is adapted to the inlet part 11 of the turn-up part 4. The rod 32 is perpendicular to the metal plate 1, and the arms of the fixing member 30 are arranged at right angles to the four corrugation segments meeting at the position of the intersection 3. Thereafter, a force is applied to the fixing member 30 perpendicular to the direction of the metal plate 1. For example, manually, a force is applied so that the rod 33 passes elastically through the inlet portion 11 and the narrow portion, and the rod 33 on the base portion 12 is held firmly by the elastic return of the two inclined surfaces 34. Is housed. In a state where the fixing member 30 is attached, the axis of the central body 31 is substantially perpendicular to the average plane of the metal plate 1.

  As shown in more detail in FIGS. 11 and 12, the rod 33 has a grooved cross-section in the middle due to the slot 38. The slot 38 extends longitudinally between the two ends of the bar 33. The end of the rod 33 is connected to the rod 32. In the figure, the shape of the slot 38 is a rhombic shape, but other elongated shapes may be used. The slot 38 facilitates elastic compression of the rod 33 when the rod 33 is inserted into a narrow portion of the turn-up portion 4. The two inclined surfaces 34 are positioned on the side surface of the bar 33 that is inclined with respect to the inner surface of the folded portion 4. In addition, the two inclined surfaces facilitate their elastic compression during insertion. For this reason, the rod 33 can be elastically deformed in order to conform to the exact shape inside the folded portion 4. That is, due to manufacturing variations of the metal plate 1, the bar 33 can slightly change from one intersection 3 to the other of the one metal plate 1. Therefore, the single fixing member 30 is configured to be used at all intersections of a corrugation plate of the type such as the metal plate 1. Also, the fixing member 30 is configured to be used on different types of plates of this type that have only slight variations due to manufacturing variations.

As shown in more detail in FIGS. 6 and 8, when the fixing member 30 is attached to the metal plate 1, the four arms of the fixing member 30 extend with four corrugation segments that meet at the position of the intersection 3. Yes. The arms of the fixing member and their functions are described in detail below.

  Referring again to FIG. 2, the two long arms 40 are connected to the short side surface 37 of the central body 31, and the two short arms 140 are connected to the long side surface 36 of the central body 31. The two long arms 40 respectively engage two high segments of the high corrugation 6 adjacent to the intersection 3 to which the fixing member 30 is attached. The two short arms 140 respectively engage with the corresponding two segments of the low corrugation 5.

  The long arm 40 has a generally rectangular cross-section and a general direction that is slightly inclined with respect to a plane perpendicular to the axis of the central body 31, i.e. the average of the metal plate 1 in the mounted state. And a general direction inclined with respect to the plane. This inclination is opposite to the inclination direction of the rod 32. The long arm 40 extends to a positioning plate 41 that is substantially parallel to the axis of the central body 31. As shown in FIG. 8, the positioning plate 41 is disposed at a position perpendicular to the axis of the high corrugation 6 with the fixing member 30 attached.

  The width and shape of the outer portion 42 of the positioning plate 41 are provided with a slight gap so that the outer portion 42 can cooperate with the inner surface of the high corrugation 6 and substantially conform to the inner cross section of the high corrugation 6. ing. For this reason, the positioning plate 41 can be fixed at a position perpendicular to the axis of the high corrugation 6 with the fixing member 30 attached to the metal plate 1. Further, the shape of the positioning plate 41 gradually expands downward. When the fixing member 30 is installed at a predetermined position, the positioning plate 41 makes it possible to slide each outer part 42 with respect to the groove bottom (fillet) 13 at the base of the high corrugation 6, The arm 40 is easily guided substantially toward the center position inside.

  The holding projection 44 is connected to the front surface 43 of the positioning plate 41 at a position that is centered in the lateral direction in relation to the positioning plate 41 and that is adjacent to the lower end 45 of the positioning plate. That is, the holding projection 44 is connected to the front surface 43 at a right angle at the connecting point of the arm 40 provided with the positioning plate 41. The holding projection 44 extends perpendicularly to the axis of the central body 31. That is, the holding projection 44 extends parallel to the axis of the high corrugation 6 in a state where the fixing member 30 is attached to the metal plate 1. The holding protrusion 44 has a generally rectangular cross section with a width slightly smaller than the groove 18. For this reason, it can slide later except for the position of the enlarged portion forming the cylindrical pin 46.

  As shown in FIGS. 6 and 7, when the fixing member 30 is attached, a part 48 of the holding projection 44 positioned beyond the pin 46 slides into the inlet of the groove 18 of the reinforcing member 15. Then, the reinforcing member 15 is stopped in the direction perpendicular to the metal plate 1 by engaging. A portion 48 of the retaining projection 48 can be slightly inclined to facilitate this engagement. In this cooperation mode of cooperation between the fixing member 30 and the reinforcing member 15, as known as the support mode, when the second end of the reinforcing member 15 is not held, the reinforcing member 15 is held by the holding protrusion. Can be tilted relative to 44. Therefore, this cooperation mode is based on the use of the fixing member 30 or the same means at each end of the reinforcing member 15. FIG. 6 shows the second fixing member 130 used at the end of the reinforcing member 15.

  In order to hold the reinforcing member 15 in the segment 14 of the high corrugation 6 between the two intersections 3, the following procedure is performed. First, the first fixing member 30 is attached to the first intersection. The reinforcing member 15 is attached between the first intersection and the second intersection, and a portion 48 of the holding projection 44 of the first fixing member is engaged with one end of the groove 18. Thereafter, the second fixing member 130 is attached to the second intersection by engaging a part 48 of the holding projection 44 of the second fixing member with the other end of the groove 18. Finally, two identical fixing members 30, 130 are respectively attached to the two intersections 3 such that each fixing member 30, 130 has an arm 40 extending in opposite directions at each end of the segment 14, respectively. . For this reason, the reinforcing member 15 has a length equal to or shorter than the distance between the two pins 46 of the two arms 40 facing each other, and is held by the segment 14 at the position shown in FIG. At this position, the two end portions of the reinforcing member 15 are held by the two fixing members 30 and 130 so that the reinforcing member 15 is held by the metal plate 1 in a direction perpendicular to the metal plate 1 and does not tilt. Each of the protrusions is supported by a part 48. The pin 46 also provides a stop that can cooperate with the end face 49 of the reinforcing member 15 at the entrance of the groove 18 in each direction and stops the reinforcing member 15 in the longitudinal direction of the high corrugation 6. Therefore, once the fixing member is installed, the reinforcing member 15 is firmly held on the metal plate 1. Therefore, the metal plate 1 on which the reinforcing member is mounted can be freely handled, arranged, or tilted at any position without removing the reinforcing member 15.

  Referring to FIG. 8, the arm 40 provides another possible mode in cooperation with the reinforcing member 15. In this cooperative mode, known as the fixed mode, the reinforcing member 15 is pushed into the holding projection 44 until the pin 46 is elastically pushed into the narrower groove 18 than the rear of the pin. In order to facilitate the elastic compression of the pin 46, the rear part of the pin can be provided with an internal recess 50 having, for example, a cylindrical shape as shown in FIG. It is desirable to push in the reinforcing member 15 until the longitudinal end surface 49 is supported with respect to the front surface 43 of the positioning plate 41. Therefore, the reinforcing member 15 can be accurately positioned in relation to the fixing member 30, and the reinforcing member 15 can be accurately positioned in relation to the metal plate 1.

  In the fixing mode, the reinforcing member 15 is firmly held on the metal plate 1 only by the effect of the fixing member 30. As shown in FIG. 8, the fixing mode is to hold the reinforcing member 15 on the end segment 51 of the high corrugation 6 extending between the end 52 of the metal plate 1 and the intersection 3 adjacent to the end 52. Can be used. The fixed reinforcing member 15 has a length greater than the segment 51 so that it can extend from the end of the metal plate 1 and engage under an adjacent second metal plate described below. Is desirable. The reinforcing member 15 can be installed at that position, for example, by placing a hand on the end of the reinforcing member 15 extending from the metal plate 1 and using a sharp tap. The reinforcing member 15 is guided in the axial direction by the high corrugation 6 by the support of the upper wall 16 with respect to the metal plate 1 inside the high corrugation 6, and the metal plate 1 is arranged inside the high corrugation 6. On the other hand, this installation position is simple in that the support of the outer portion 42 of the positioning plate 41 holds the holding projection 44 at the position corresponding to the groove 18 and at the center in the lateral direction of the high corrugation 6. It has become. In addition, the inclined shape of the part 48 of the holding protrusion facilitates the guide of the holding protrusion 44 at the entrance of the groove 18. The description given above with respect to the arm 40 of the fixing member 30 applies to the other arm 40 extending in the opposite direction in the same way. Also, the arm 140 includes the differences associated with the low corrugation 5 and the reinforcing member 115, but the arm 140 fulfills the same function as the arm 40. Thus, in the drawings, the components of arm 140 have the same reference number plus 100 and will not be described again.

  In order to hold the four reinforcing members in the four corrugation segments at the point of intersection 3 where the fixing member 30 is attached using one or more other adjacent fixing members, the fixing member 30 has two It is possible to cooperate with the reinforcing member 15 and the two reinforcing members 115. In the metal plate 1 having a high corrugation 6 that is the same and provided at regular intervals, and a low corrugation 5 that is the same and provided at regular intervals, the metal plate 1 is formed using only three set parts. All corrugation segments can be equipped with components to reinforce against pressure. That is, the same fixing member 30, the reinforcing member 15 having the same length as the distance between the two low corrugations 5, and the distance between the two high corrugations 6 that are the same as each other. The reinforcing member 15 having a length designed in the above can be used to reinforce against pressure.

  Referring to FIG. 14, a possible way of providing a reinforcing member for all corrugations on the outer surface of the metal plate 1 will be described. In order to carry out this method, the metal plate 1 is, for example, like a wall so that the outer surface of the metal plate 1 can be seen and the high corrugation 6 is positioned substantially horizontal and the low corrugation 5 is positioned substantially vertically. It is provided around the support part and supported by the support part. The alphabetical order of the reference characters shown in FIG. 14 indicates the order in which the parts are attached. In the letter A, the first fixing member is disposed at the intersection located at the lower left corner of the metal plate 1. Thereafter, the reinforcing member 15 and the fixing member 30 are alternately arranged in order according to the horizontal high corrugation (letters B to Q) so that the reinforcing member is in the support mode including two adjacent fixing members in any case. Is done. The reinforcing member 115 is then placed in a low corrugation segment that is placed alongside the attached high corrugation. In any case, the lower end of the reinforcing member 115 is made to cooperate with the arm 140 of the lower fixing member in the support mode (letter R). This procedure is performed along the high corrugation in the same manner as the first high corrugation, and each added fixing member 30 is added in step R in the support mode (characters S, T, U, V, etc.). It is ensured that the formed reinforcing member 115 is held.

  As a matter of course, the reinforcing member can be provided only on a part of the corrugation or on a part of the corrugation segment of the metal plate 1.

  In the state shown in FIG. 14, the end segment 51 of the high corrugation 6 and the end segment 83 of the low corrugation 5 are not provided with a reinforcing member. Starting from this state, the method described with respect to FIG. 8 can be used to provide a reinforcing member on an end segment positioned along one or more ends of the metal plate 1.

  The three set parts used in this method can be provided as a reinforcing device in the form of a metal plate kit such as the metal plate 1. This type of reinforcing device can be easily and quickly manually attached to the metal plate 1 by applying a relatively small manual force. Also, this type of reinforcing kid is suitable for corrugated metal plates with corrugation dimensions and numbers different from those shown in FIG.

  In addition, when the corrugation of the corrugated metal plate to be equipped is irregularly arranged, the manufacture of a plurality of sets of reinforcing members 15 and 115 having different lengths has a profile with a long length. It is easy to cut.

  Accordingly, the metal plate 1 with the reinforcing members 15 and / or 115 held by the fixing member 30 is used to produce a pressure resistant impermeable membrane by assembling a plurality of these structures. It can be used as a modular wall structure. The joint between the two of these structures is shown in FIG.

  FIG. 9 schematically shows a joint between two corrugation metal plates 54, 55 similar to the metal plate 1 of FIG. The two corrugation metal plates 54 and 55 are arranged so that the respective corrugations are arranged. FIG. 9 is a cross-sectional view taken along the center plane of the high corrugation 6 extending over the two metal plates 54 and 55. Each of the two metal plates 54, 55 is provided with a reinforcing device as described above for all corrugations of the metal plates or for the reinforcement of the subassembly from them. In FIG. 9, these reinforcing devices are partially shown. That is, each fixing member 30 attached to each metal plate 54, 55 at the position of the intersection 3 of the high corrugation 6 closest to the end portion 52 of each metal plate partially under the metal plates 54, 55, and A reinforcing member 15 arranged in the corrugation 6 is shown. For this reason, the reinforcing member 15 reinforces the high corrugation 6 at the position of the joint portion between the two metal plates 54 and 55.

  In order to place the metal plates 54, 55 in place, it is possible to proceed as follows. Initially, the metal plate 54 already provided with a reinforcing device is placed on the support surface 60 to which the impermeable membrane is attached. The support surface 60 can be constituted by, for example, an upper plate of a known type of heat insulating wall. For example, the metal plate 54 supports the reinforcing member 15 fixed to the fixing member 30 in order to extend from the end portion 52 of the metal plate 54 to a certain distance.

  The other metal plate 55 already provided with the reinforcing member is then moved so that the end 52 of the metal plate 55, which must eventually overlap the end 52 of the metal plate 54, is at the correct height. And is carried on the support surface 60 adjacent to the metal plate 54. In the corrugation segment 57 positioned near the end 52 of the metal plate 55, the high corrugation 6 of the metal plate 55 does not have a reinforcing member. When the metal plate 55 is accurately placed in the direction of the arrow 59, the end portion of the metal plate 55 overlaps the end portion 56 of the metal plate 54 along the end portion 52. On the other hand, the corrugation segment 57 of the metal plate 55 is engaged with the reinforcing member 15, and the end of the holding projection 44 of the fixing member 30 attached to the metal plate 55 is inserted into the insertion play 58. As a result of the presence of), it is positioned facing the longitudinal end face 49 of the reinforcing member 15 without obstructing the rear.

  This insertion play 58 can exist without having to provide the reinforcing member 15 having a size different from that of other reinforcing members used inside the metal plates 54 and 55. When the metal plates 54 and 55 have dimensions such that all the low corrugations 5 are finally equidistant, considering that they overlap at each junction between the two metal plates 54 and 55 The reinforcing members 15 having the lengths designed at regular intervals can be supported by the two holding projections 44 in the support mode shown in FIG. 6 and are related to the other holding projections 44. Then, by using the insertion play 58, it can be fixed to one holding projection 44 in the fixing mode shown in FIGS.

This characteristic is due to the specific dimensions of the part shown in more detail in FIG. FIG. 13 shows the reinforcing member 15 held in the high corrugation 6 between the two fixing members 30. The illustration of the metal plate 1 is omitted here for clarity.
The dimensions shown specify:
p: distance between the centers of two consecutive intersections along the high corrugation d: length between the center of the fixing member 30 and the end of the arm 40 at the position of the front surface 43 b: holding protrusion from the front surface 43 44 length a: distance between the front surface 43 and the pin 46 l: length of the reinforcing member

When it is considered that Y = p− (l + 2d), it is preferable to confirm the following formula for these dimensions.
Y / 2 <b <Y (Formula 1)
Yb <a <Y / 2 (Formula 2)

For this reason, the insertion play 58 having the size (Yb) is maintained at the position shown in FIG. In the position of FIG. 13, the reinforcing member 15 is shown in a support mode that is centered between the two fixing members 30. The dimension indicating the length of the part 48 of the holding projection inserted into the groove 18 is expressed by the following equation.
c = b−Y / 2 (Equation 4)

  Finally, the two metal plates 54, 55 are welded in an impermeable manner at the end 56. The combination of the plurality of wall structures described in FIG. 9 can also be made at the position of the high corrugation 6 of the metal plates 54, 55. Similar means can also be used in the low corrugation 5.

  It is therefore possible to produce an impermeable membrane with a large surface area by combining a number of regular wall structures on a flat support surface in this way. The corrugation metal plate can also be cut according to other shapes, and can be provided in a similar manner. The manufactured impermeable membrane can be secured to the support surface 60 by a variety of suitable means.

  In the above description, the holding projection 44 has two modes of cooperation between the fixing member 30 and the reinforcing member 15, that is, the support type cooperation mode shown in FIG. 6 and the fixed type cooperation mode shown in FIG. And provide. As a modification, these two cooperation modes can be obtained by using two parts different from the fixing member. Similarly, the positioning plate 41 provides a unit for positioning the arm 40 with the high corrugation 6 and a stop unit for the reinforcing member 15 in a fixed state. As a variant, these two functions can be fulfilled by separate components.

  The techniques described above for producing an impermeable membrane can be used with different types of tanks. For example, it can be used to construct the primary impervious membrane of an LNG tank in a land installation or floating structure such as a methane tanker.

  Referring to FIG. 10, a cross-sectional view of a methane tanker 70 and a general prismatic impermeable insulating container 71 mounted on a double hull 72 are shown. The wall of the container 71 includes a primary impermeable barrier, a secondary impermeable barrier, and two insulating barriers. The primary impermeable barrier is configured to contact the LNG contained in the container. The secondary impermeable barrier is disposed between the primary impermeable barrier and the double hull 72. The two insulating barriers are disposed between the primary impermeable barrier and the secondary impermeable barrier, and between the secondary impermeable barrier and the double hull 72, respectively.

  A loading / unloading pipe 73 is provided on the upper deck of the ship in a known manner and is connected to the sea or port terminal using a suitable connecting machine to carry LNG tank cargo from or to container 71. Has been.

  FIG. 10 shows an example of a port terminal comprising a loading / unloading unit 75, a submarine pipe 76, and a land installation 77. The loading / unloading unit 75 is a fixed offshore facility, and includes a movable arm 74 and a tower 78 that supports the movable arm 74. The movable arm 74 supports a bundle of insulated, bendable tubes 79. The tube 79 can be connected to the unloading pipe 73. An adjustable movable arm 74 is applied to all gauges of the methane tanker. A connection pipe (not shown) extends inside the tower 78. The loading / unloading unit 75 allows the tanker 70 to be loaded / unloaded from / to the land facility 77. The land facility 77 includes a liquefied gas storage container 80 and a connection pipe 81 connected to the unloading unit 75 by a submarine pipe 76. The submarine pipe 76 can carry the liquefied gas between the unloading unit 75 and the land facility 77 at a long distance, for example, 5 km or more. For this reason, the methane tanker 70 can be arranged at a long distance from the coast during the unloading operation.

In order to generate the pressure required for transportation of the liquefied gas, a pump mounted on the ship 70, the pump is mounted on land facility 77 or a pump which is mounted on the unloading unit 75, it is used.

  Although the invention has been described in connection with specific embodiments, it is obvious that the invention is not limited to such specific embodiments and, unless departing from the scope of the invention, Obviously, technical equivalents and combinations thereof corresponding to the described embodiments are also included.

  The verbs “contain”, “comprise”, or “include”, and their conjugations, and their conjugations, are more components than indicated in the claims or It does not exclude the presence of steps. Also, the indefinite article “a” or “an” used in a component or step does not exclude the presence of a plurality of components or steps of this type unless specifically stated otherwise.

  In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

DESCRIPTION OF SYMBOLS 1 Impervious metal plate 2 Inner surface 3 Intersection 5 Low corrugation (1st row corrugation)
6 High corrugation (second row corrugation)
15, 115 Reinforcement member 16 Upper wall 17 Lower wall (lower surface)
18 groove 23
30, 130 Fixed member 32 Rod (Mounting unit)
33 bar (mounting unit, head)
40, 140 Arm 41 Positioning plate (positioning unit)
43 Front (stop unit)
44 Holding projection (holding unit)
46 pins (thickness part)
70 ship 71 container 77 land facility (land storage facility)

Claims (27)

In the fixing member (30) for the impermeable wall structure,
A first corrugation belonging to a plurality of parallel first row corrugations (5) and a second corrugation belonging to a plurality of parallel second row corrugations (6) and projecting from an inner surface (2) opposite to the outer surface An attachment unit (32, 33) attached to the outer surface of the impermeable metal plate (1) having a corrugation to be attached at the position of the intersection (3) between the first corrugation and the second corrugation;
In cooperation with the longitudinal ends of elongate reinforcing members (15, 115) arranged to be arranged in the corrugation to increase resistance to pressure on the metal plate, at the position of the intersection A holding member (44) for holding the reinforcing member in one of the crossing corrugations (5, 6). In an easy-to-install assembly suitable for producing an impermeable wall structure,
A fixing member (30) according to claim 1,
The first row corrugation (5) and the second row corrugation (6), wherein the first row corrugation intersects the second row corrugation at the position of the intersection (3), the first row corrugation and the An impermeable metal plate (1), wherein a second row corrugation projects from the inner surface (2) of the metal plate;
An elongated reinforcing member (15, 115) disposed on one of the first and second row corrugations (5, 6) on the outer surface of the metal plate to increase resistance to pressure on the metal plate. And an assembly. The fixing member cooperates with each end of the plurality of reinforcement members to hold the reinforcement members in the plurality of segments of the first row corrugation or the second row corrugation of the impermeable metal plate. have a plurality of holding units (44) which can,
The assembly according to claim 2, characterized in that the corrugation segments meet at an intersection (3) to which the fixing member is attached . The holding unit (44) can cooperate with the ends of the reinforcing members (15, 115) in a supporting state in which the holding unit supports the ends of the reinforcing members in a direction perpendicular to the metal plate. 4. An assembly according to claim 2 or 3, characterized in that In a fixed state in which the holding unit fixes the reinforcing member (15, 115) to the fixing member (30) so that the reinforcing member is held by the metal plate only by the fixing member, the holding unit is 5. An assembly according to any one of claims 2 to 4, characterized in that it can cooperate with the end of the reinforcing member. The fixing member is provided with an arm connected to the mounting unit,
Wherein the holding unit of the fixing member (44) is provided at the end of the A over arm (40),
The arm is arranged to extend to a corrugation where the reinforcing member must be held by the holding unit in a state where the fixing member (30) is attached to the metal plate. Item 6. The assembly according to any one of Items 2 to 5. The arm has a positioning unit (41) having an outer shape designed with respect to a horizontal contour of the corrugation of the metal plate,
In order to position the arm in the corrugation, the positioning unit may cooperate with the metal plate at the position of the lateral wall of the corrugation (6) with the fixing member (30) attached to the metal plate. The assembly of claim 6, wherein the assembly is capable. The holding unit is composed of protrusions (44, 48) extending in the longitudinal direction by corrugation of the metal plate,
In a state where the fixing member is attached to the metal plate, the reinforcing member has a groove (18) that opens at a position of an end face in the longitudinal direction of the reinforcing member and accommodates the protrusion of the holding unit. 8. An assembly according to any one of claims 2 to 7, characterized in that The protrusions of the holding unit can cooperate with the longitudinal end face (49) of the reinforcing member in order to stop the reinforcing member (15) in the longitudinal direction relative to the protrusion (44). 46). The assembly of claim 8, further comprising: In order to firmly fix the reinforcing member to the fixing member (30), the thick portion (46) of the protruding portion is formed into the reinforcing member by elastic deformation of the thickness portion and / or the groove of the reinforcing member. The assembly according to claim 9, wherein the assembly is press-fitted into a groove (18). Stop where the fixing member can cooperate with the longitudinal end face (49) of the reinforcing member to limit the engagement of the protrusion (44) in the groove beyond the thickness portion (46) 11. An assembly according to claim 10, comprising a unit (43). 12. The groove of the reinforcing member is constituted by a longitudinal groove (18) recessed at an outer surface (17) of the reinforcing member configured to face the metal plate. An assembly according to any one of the preceding claims. The attachment unit includes a head (33) that can be attached to an outer surface of the metal plate by an elastic gap of an undercut (4) of the metal plate at a position of an intersection of the corrugations. The assembly according to any one of claims 2-12. The fixing member has a main body (31) connected to the holding unit (44), and a rod (32) connecting the head to the main body and providing a space therebetween. The assembly of claim 13. The assembly according to claim 14, characterized in that the rod (32) has an inclined shape inclined from the body (31) of the fixing member toward the head (33). The fixing member is a first fixing member;
The first fixing member can be attached to the metal plate at a first intersection between the corrugation for holding the reinforcing member and the first row corrugation of the impermeable metal plate. Unit (32, 33),
The corrugation that must hold the reinforcing member further intersects the second row of corrugations of the impermeable metal plate at a second intersection.
The assembly further comprises a second securing member (130),
The second fixing member includes a mounting unit (32, 33) attached to an outer surface of the metal plate at a second intersection (3 ) of the corrugation that must hold the reinforcing member (15), and the reinforcing member. A holding unit (44) for cooperating with the second longitudinal end of the reinforcing member to hold it in the corrugation,
The reinforcing member has the distance length designed in between the holding unit (44) of the two said first and second fixing members being attached to said metal plate (30, 130),
Both ends of the reinforcing member are held by the holding units of the two first and second fixing members,
The said reinforcing member is hold | maintained at the said metal plate between the two said fixing members by cooperating with the two said holding | maintenance units, As described in any one of Claims 2-15 characterized by the above-mentioned. assembly. 17. Assembly according to any one of claims 2 to 16, characterized in that the reinforcing member (15, 115) is composed of a contour body with a constant cross section. In the manufacturing method of the impermeable wall structure,
A plurality of parallel first row corrugations (5) projecting from the inner surface of the metal plate and a plurality of parallel second rows projecting from the inner surface of the metal plate and intersecting the first row corrugation at the intersection (3) Providing an impermeable metal plate (1) comprising: a corrugation (6);
A fixing member (30) comprising an attachment unit (32, 33) and a holding unit (44), and attaching the attachment unit to an outer surface opposite to the inner surface of the metal plate at one position of the intersection. Arranging, and
The impervious metal plate meets an elongated reinforcing member (15) at an intersection where the fixing member is attached to an outer surface of the metal plate so that a longitudinal end of the reinforcing member cooperates with the holding unit (44). A method for producing an impermeable wall structure, comprising the step of: arranging in one corrugation segment. The fixing member is a first fixing member attached to the impermeable metal plate at a first intersection between the corrugation provided with the reinforcing member and the first row corrugation of the impermeable metal plate. Yes,
A mounting unit and a holding unit, and at the position of a second intersection (3) between the corrugation provided with the reinforcing member and the second row corrugation of the impermeable metal plate, the mounting unit is Disposing a second fixing member (130) attached to the outer surface of the metal plate near a first intersection point where the first fixing member (30) is attached;
The reinforcing member is disposed in the corrugations of the segment extending between two of said intersection points (14), and, between two of said fixing member, and two longitudinal ends of the reinforcing member (15) 19. Method according to claim 18, characterized in that it is held on the metal plate (1) in cooperation with two holding units (44). A step of fixing the end of the reinforcing member (15) to the holding unit (44) so that the reinforcing member is held by the metal plate only by the fixing member (30). The method of claim 18. The reinforcing member (15) is, corrugation segments extending between the intersection points where the fixing member is attached (3) (51), and the ends of the metal plate (52), provided, and,
21. A method according to claim 20, characterized in that the reinforcing member extends from the end of the metal plate so that it can be connected to the corrugation of an adjacent metal plate (55). Attaching a fixing member (30) having four holding units to be held on the outer surface of the mounting unit and the metal plate to the positions of all the intersections (3) on the outer surface of the metal plate (1);
Two holding units (44) of two fixing members attached with two longitudinal ends of the reinforcing member at the positions of the two intersections (3) so as to hold the reinforcing member on the metal plate. ) by cooperation with the method of claim 18, further comprising a placing a segment of all corrugations extending between said reinforcing member (15, 115) with two points of intersection. Placing said reinforcing member (15, 115), to all corrugation segments extending between the intersection points adjacent the ends of the metal plate and an end portion (52) of the metal plate,
The fixing member attached to the end of the reinforcing member at the position of the corresponding intersection so that the reinforcing member is held by the metal plate only by the fixing member extending from the end (52) of the metal plate. 24. The method according to claim 22, further comprising the step of securing to the holding unit (44). In the impermeable insulating container (71) provided in the support structure,
An insulating barrier and an impermeable barrier designed to contact the product contained in the container;
The said impermeable barrier is comprised by the assembly with easy attachment as described in any one of Claims 2-17. The impermeable insulation container characterized by the above-mentioned. On a ship that transports cold liquid,
A double hull (72);
25. A ship comprising the container (71) according to claim 24 provided on the double hull. 26. Use of a ship according to claim 25 for loading and unloading cold liquid,
Cold liquid from the floating storage facility or land storage facility (77) to the container (71) of the ship, or until said floating storage facility or land storage facility (77) from the container (71) of the ship, insulated pipes use of the ship, characterized in that it is carried through. In the transport system for cold liquid,
A ship (70) according to claim 25;
The container attached to the hull of the ship (71) to connect the floating storage facility or land storage facility (77), an insulating pipes disposed,
A pump for carrying cold liquid through the insulated pipe from the floating storage facility or land storage facility (77) to the vessel of the ship or from the vessel container to the floating storage facility or land storage facility (77); A transport system for cold liquid, characterized in that it is constructed.

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