Supporting structure of marine vertical C-shaped liquefied gas storage tank

Abstract

The utility model discloses a supporting structure of a marine vertical C-shaped liquefied gas storage tank. The supporting structure is installed in a liquid tank groove of a ship body and comprises a tank body, an upper supporting structure, a floating stopping device and a lower supporting structure. The tank body comprises a cylindrical barrel, a dish-shaped upper sealing head, a hemispherical lower sealing head and a sealing head heavy plate; the upper supporting structure comprises a plurality of ship body supporting plates, a plurality of ship body supporting wood blocks, a tank body reinforcing ring and a plurality of sliding wood blocks; the floating stopping device comprises a plurality of tank floating stopping wood blocks and a plurality of ship floating stopping pressing blocks; the lower supporting structure comprises a spring supporting mechanism, a fixed wood block and a saddle; the spring supporting mechanism comprises two rows of steel plate springs fixed to the bottom face of the liquid tank groove and a spring supporting plate fixed to the top faces of the two rows of steel plate springs. The fixed wood block is mounted on the top surface of the spring supporting plate; and the saddle is fixed on the top surface of the fixed wood block through epoxy glue and is connected with the sealing head heavy plate. The structure deformation of the tank body can be reduced, and the stability of the storage tank is remarkably improved.

Description

Technical Field

[0001] This utility model relates to a support structure for a marine vertical C-type liquefied gas storage tank. Background Technology

[0002] As a core component of liquefied gas (LPG) carriers, the design of marine vertical C-type LPG storage tanks directly affects the ship's safety, operational efficiency, and maintenance costs. With the rapid growth in global LPG transportation demand, the capacity of LPG storage tanks is constantly increasing, while the transportation environment is becoming increasingly harsh, placing higher demands on the support structure of LPG storage tanks. Traditional support structures often use fixed hardwood blocks connected between the LPG storage tank and the hull. The limited contact area between the LPG storage tank and the fixed hardwood blocks leads to localized stress concentration. Furthermore, due to the extremely low storage temperature of LPG, it undergoes dramatic expansion and contraction during filling and venting, and traditional fixed wooden blocks cannot provide effective displacement compensation. Utility Model Content

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a support structure for a marine vertical C-type liquefied gas storage tank, which can reduce the structural deformation of the tank and significantly improve the stability of the storage tank.

[0004] The purpose of this utility model is achieved as follows: a support structure for a marine vertical C-type liquefied gas storage tank is installed in the tank tank of the ship and includes a tank body, an upper support structure, an anti-buoyancy device and a lower support structure.

[0005] The tank body includes a cylindrical body, a dish-shaped upper end cap connected to the top of the body, a hemispherical lower end cap connected to the bottom of the body, and an end cap weight plate welded to the outer wall of the bottom of the transverse axis of the lower end cap; a slot is opened in the middle of the end cap weight plate.

[0006] The upper support structure includes several hull support plates, several hull support wooden blocks, tank reinforcing rings, and several sliding wooden blocks; wherein...

[0007] The hull support plate is fan-shaped; several hull support plates are evenly distributed around the circumference and fixed to the upper inner wall of the liquid tank.

[0008] Several hull support wooden blocks are fixed one-to-one to the top surface of several hull support plates using epoxy glue.

[0009] The tank body reinforcing ring is fixed to the upper outer surface of the tank body's cylindrical body;

[0010] The sliding wooden blocks are fan-shaped; several sliding wooden blocks are evenly distributed around the circumference and are positioned between the top surface of several hull support wooden blocks and the bottom surface of the tank reinforcing ring, corresponding one-to-one with several hull support plates; several sliding wooden blocks are fixed to the bottom surface of the tank reinforcing ring with epoxy glue; the bottom surfaces of several sliding wooden blocks are in sliding fit with the top surfaces of several hull support wooden blocks.

[0011] The anti-buoyancy device includes several tank anti-buoyancy wooden blocks and several ship hull anti-buoyancy pressure blocks;

[0012] Several anti-buoyancy wooden blocks are each evenly distributed around the circumference of an anti-buoyancy base and fixed to the top surface of the tank's reinforcing ring in a staggered manner with several sliding wooden blocks;

[0013] Several anti-buoyancy blocks for the hull and several anti-buoyancy wooden blocks for the tank are fixed one-to-one on the upper inner wall of the liquid tank above the hull support plate, and there is a gap between the bottom surface of several anti-buoyancy blocks for the hull and the top surface of several anti-buoyancy wooden blocks for the tank.

[0014] The lower support structure includes a spring support mechanism, fixed wooden blocks, and a saddle; wherein...

[0015] The spring support mechanism includes two rows of leaf springs fixed to the bottom surface of the liquid tank and a spring support plate fixed to the top surface of the two rows of leaf springs.

[0016] The fixed wooden block is installed on the top surface of the spring support plate;

[0017] The saddle is fixed to the top surface of the fixed wooden block with epoxy adhesive and connected to the end cap weight plate.

[0018] The supporting structure of the above-mentioned marine vertical C-type liquefied gas storage tank is characterized in that a vacuum ring is fixed on the upper inner wall surface of the hemispherical lower end cap of the tank body.

[0019] The aforementioned support structure for a marine vertical C-type liquefied gas storage tank includes multiple reinforcing ring elbow plates that are evenly distributed around the top surface of the tank body reinforcing ring and are staggered from several anti-buoyancy bases; reinforcing ring elbow plates are also fixed between the bottom surface of the tank body reinforcing ring and the outer surface of the tank body corresponding to several anti-buoyancy bases.

[0020] In the aforementioned support structure of the marine vertical C-type liquefied gas storage tank, the anti-buoyancy base is welded and fixed to the top surface of the tank body reinforcing ring; the anti-buoyancy wooden block is fixed to the top surface of the anti-buoyancy base with epoxy glue.

[0021] The aforementioned support structure for a marine vertical C-type liquefied gas storage tank includes a leaf spring made of a strip steel plate bent into a C shape, with one end extending into a vertical support plate and the other end extending into a horizontal support plate; multiple spring steel plates in each row are arranged in an alternating manner and are also interlocked with multiple spring steel plates in another row.

[0022] The aforementioned support structure for a marine vertical C-type liquefied gas storage tank includes a saddle base plate fixed to the top surface of a fixed wooden block with epoxy adhesive, a saddle web plate fixed to the top surface of the middle part of the saddle base plate, multiple pairs of symmetrically fixed saddle reinforcing elbow plates on both sides of the saddle web plate, and multiple elbow plate connecting plates connecting adjacent saddle reinforcing elbow plates; the top surface of the saddle web plate is a spherical arc surface adapted to the end cap heavy plate, and the top end of the saddle web plate is inserted into the slot of the end cap heavy plate.

[0023] The aforementioned support structure for a marine vertical C-type liquefied gas storage tank includes a right-angled trapezoidal saddle reinforcing elbow plate, wherein the extension line of the outer inclined waist edge of each saddle reinforcing elbow plate passes through the center of the lower end cap.

[0024] In the aforementioned support structure for a marine vertical C-type liquefied gas storage tank, the sliding wooden block and the fixed wooden block are each installed within the wooden block enclosure.

[0025] The support structure of the marine vertical C-type liquefied gas storage tank of this utility model has the following characteristics:

[0026] 1. The upper support structure of this utility model supports the entire tank body on the liquid tank tank to transfer the load of the storage tank and enhance the stability of the storage tank. Through the synergistic effect of the sliding wooden blocks in the upper support structure and the hull support wooden blocks, the storage tank is ensured to be evenly stressed, overcoming the problem of stress concentration in the storage tank. At the same time, it allows sliding displacement between the sliding wooden blocks and the hull support wooden blocks, reducing the structural deformation of the tank body.

[0027] 2. The lower support structure of this utility model provides elastic compensation. The spring support mechanism 7 in the lower support structure ensures the normal contraction of the storage tank and provides a certain support function. The upper and lower support structures work together to significantly improve the stability of the storage tank.

[0028] 3. Since the hemispherical lower head needs to be connected to the saddle, a vacuum ring needs to be arranged inside the lower head to strengthen the structure and reduce the deformation of the lower head; a reinforcing ring or vacuum ring can also be appropriately set inside the cylinder according to the strength requirements. Attached Figure Description

[0029] Figure 1 This is a perspective view of the support structure of the marine vertical C-type liquefied gas storage tank of this utility model.

[0030] Figure 2This is a front view of the support structure of the marine vertical C-type liquefied gas storage tank of this utility model;

[0031] Figure 3 This is a side view of the support structure of the marine vertical C-type liquefied gas storage tank of this utility model.

[0032] Figure 4 yes Figure 1 AA direction view;

[0033] Figure 5 yes Figure 1 BB view in the middle;

[0034] Figure 6 yes Figure 1 CC view in the middle;

[0035] Figure 7 This is a perspective view of the spring support mechanism in the support structure of this utility model;

[0036] Figure 8 This is a perspective view of the saddle in the support structure of this utility model. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] Please see Figures 1 to 8 The support structure of the marine vertical C-type liquefied gas storage tank of this utility model is installed in the liquid tank tank 100 of the hull and includes a tank body 1, a vacuum ring 2, an upper support structure, an anti-buoyancy device 6 and a lower support structure.

[0039] The tank body 1 includes a cylindrical body 10, a dish-shaped upper end cap 11 connected to the top of the body 10, a hemispherical lower end cap 12 connected to the bottom of the body 10, and an end cap weight plate 13 welded to the outer wall surface of the bottom of the transverse axis of the lower end cap 12; a slot is opened in the middle of the end cap weight plate 13.

[0040] The vacuum ring 2 is fixed on the upper inner wall of the lower end cap 12 of the tank body 1. The vacuum ring 2 is composed of a vacuum ring web 21 whose outer diameter surface is fixed on the upper inner wall of the lower end cap 12 and a vacuum ring panel 22 fixed on the inner diameter surface of the vacuum ring web 21.

[0041] The superstructure includes four hull support plates 30, four hull support wooden blocks 3, tank reinforcing rings 4, and four sliding wooden blocks 5; among which,

[0042] The hull support plate 30 is fan-shaped; the four hull support plates 30 are evenly distributed around the circumference and fixed to the upper inner wall of the liquid tank 100.

[0043] The four hull support wooden blocks 3 are each fixed to the top surface of the four hull support plates 30 one by one with epoxy glue; each hull support wooden block 3 is installed inside the wooden block enclosure.

[0044] The tank body reinforcing ring 4 is fixed on the upper outer surface of the cylinder 10 of the tank body 1; the outer diameter of the tank body reinforcing ring 4 is smaller than the inner diameter of the liquid tank 100;

[0045] The sliding wooden blocks 5 are fan-shaped rings; four sliding wooden blocks 5 are evenly distributed around the circumference and are positioned between the top surface of the four hull support wooden blocks 3 and the bottom surface of the tank reinforcing ring 4, corresponding one-to-one with the four hull support plates 30; the bottom surfaces of the four sliding wooden blocks 5 are in sliding fit with the top surfaces of the four hull support wooden blocks 3; the four sliding wooden blocks 5 are fixed to the bottom surface of the tank reinforcing ring 4 with epoxy glue; each sliding wooden block 5 is installed inside the sliding wooden block enclosure 50; the outer diameter of the sliding wooden block 5 is smaller than the outer diameter of the hull support wooden block 3.

[0046] The anti-buoyancy device 6 includes four tank anti-buoyancy wooden blocks 61 and four hull anti-buoyancy pressure blocks 62, wherein,

[0047] Four anti-buoyancy wooden blocks 61 are each evenly distributed around the circumference of an anti-buoyancy base 60 and fixed to the top surface of the tank reinforcing ring 4, staggered from the four sliding wooden blocks 5. Each anti-buoyancy wooden block 61 is fixed to the anti-buoyancy base 60 with epoxy adhesive, which is welded to the top surface of the tank reinforcing ring 4. The four anti-buoyancy wooden blocks 61 are preferably located at both ends of the transverse axis and both ends of the longitudinal axis of the tank 1.

[0048] Four anti-buoyancy blocks 62 and four anti-buoyancy wooden blocks 61 are fixed one-to-one on the upper inner wall of the liquid tank above the hull support plate 30, and there is a gap between the bottom surface of the four anti-buoyancy blocks 62 and the top surface of the four anti-buoyancy wooden blocks 61.

[0049] Multiple reinforcing ring elbow plates 40 are fixed circumferentially between the top surface of the tank body reinforcing ring 4 and the outer surface of the cylinder 10 of the tank body 1, and are staggered from the four anti-buoyancy bases 60; reinforcing ring elbow plates 40 are also fixed between the bottom surface of the tank body reinforcing ring 4 at the corresponding positions of the four anti-buoyancy bases 60 and the outer surface of the cylinder 10 of the tank body 1.

[0050] The lower support structure includes a spring support mechanism 7, fixed wooden blocks 8, and a saddle 9; among which,

[0051] The spring support mechanism 7 includes two rows of leaf springs 71 welded and fixed to the bottom surface of the liquid tank 100 and a spring support plate 72 welded and fixed to the top surface of the two rows of leaf springs 71; each leaf spring 71 is made of a strip steel plate bent into a C shape with a vertical support plate extending from one end and a horizontal support plate extending from the other end; the multiple spring steel plates 71 of each row of leaf springs are arranged in an alternating manner and are also interlocked with the multiple spring steel plates 71 of the other row in an alternating manner.

[0052] The fixed wooden block 8 is installed on the top surface of the spring support plate 72; the fixed wooden block 8 is made of multiple small laminated wood pieces bonded together, and the fixed wooden block 8 is installed inside the fixed wooden block enclosure 80;

[0053] The saddle 9 is located on the top surface of the fixed wooden block 8. The saddle 9 includes a saddle base plate 91 fixed to the top surface of the fixed wooden block 8 with epoxy glue, a saddle web plate 92 fixed to the top surface of the middle part of the saddle base plate 91, multiple pairs of saddle reinforcing elbow plates 93 symmetrically fixed to the two sides of the saddle web plate 92, and multiple elbow plate connecting plates 94 connecting adjacent saddle reinforcing elbow plates 93. The top surface of the saddle web plate 92 is a spherical arc surface adapted to the end cap weight plate 13, and the top of the saddle web plate 92 is inserted into the slot of the end cap weight plate 13. Each saddle reinforcing elbow plate 93 is a right-angled trapezoid, and the extension line of the outer inclined waist edge of each saddle reinforcing elbow plate 93 passes through the center of the sphere of the lower end cap 12.

[0054] The support structure of the marine vertical C-type liquefied gas storage tank of this utility model has the following characteristics:

[0055] 1. The upper support structure supports the entire tank 1 on the liquid tank 100 to transfer the load of the storage tank 1 and enhance the stability of the storage tank 1. Through the sliding wooden block 5 and the hull support wooden block 3 in the upper support structure, the storage tank 1 is ensured to be evenly stressed, overcoming the stress concentration problem of the storage tank 1. At the same time, it allows sliding displacement between the sliding wooden block 5 and the hull support wooden block 3, reducing the structural deformation of the tank 1.

[0056] 2. The lower support structure provides elastic compensation. The spring support mechanism 7 in the lower support structure ensures the normal contraction of the storage tank 1 and provides a certain support function. The upper and lower support structures work together to significantly improve the stability of the storage tank 1.

[0057] 3. Since the hemispherical lower head 12 needs to be connected to the saddle 9, a vacuum ring 2 needs to be arranged inside the lower head 12 to strengthen the structure of the lower head 12 and reduce the deformation of the lower head 12; a reinforcing ring or a vacuum ring can also be appropriately set inside the cylinder according to the strength requirements.

[0058] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A supporting structure of a vertical C-type liquefied gas storage tank for a ship, which is installed in a liquid tank groove of a ship body and comprises a tank body, an upper supporting structure, a float-stopping device and a lower supporting structure, characterized in that the tank body comprises a cylindrical barrel, a disc-shaped upper head connected to a top end of the barrel, a hemispherical lower head connected to a bottom end of the barrel and a head heavy plate welded to an outer wall surface of a bottom of a transverse shaft of the lower head, a middle part of the head heavy plate is provided with a slot; the upper supporting structure comprises a plurality of ship body supporting plates, a plurality of ship body supporting blocks, a tank body reinforcing ring and a plurality of sliding blocks; wherein the ship body supporting plates are in the shape of a fan ring; the plurality of ship body supporting plates are fixed on an upper inner wall surface of the liquid tank groove in a circumferentially uniform manner; the plurality of ship body supporting blocks are respectively fixed on top surfaces of the plurality of ship body supporting plates in a one-to-one corresponding manner by epoxy glue; the tank body reinforcing ring is fixed on an upper outer surface of the barrel of the tank body; the sliding blocks are in the shape of a fan ring; the plurality of sliding blocks are circumferentially and uniformly arranged between top surfaces of the plurality of ship body supporting blocks and a bottom surface of the tank body reinforcing ring in a one-to-one corresponding manner with the plurality of ship body supporting plates; the plurality of sliding blocks are fixed on the bottom surface of the tank body reinforcing ring by epoxy glue; bottom surfaces of the plurality of sliding blocks are in sliding fit with top surfaces of the plurality of ship body supporting blocks in a one-to-one corresponding manner; the float-stopping device comprises a plurality of tank body float-stopping blocks and a plurality of ship body float-stopping blocks; the plurality of tank body float-stopping blocks are respectively fixed on a top surface of the tank body reinforcing ring in a circumferentially uniform manner by a float-stopping base and staggered with the plurality of sliding blocks; the plurality of ship body float-stopping blocks are fixed on an upper inner wall surface of the liquid tank groove above the ship body supporting plates in a one-to-one corresponding manner with the plurality of tank body float-stopping blocks, and a gap is formed between bottom surfaces of the plurality of ship body float-stopping blocks and top surfaces of the plurality of tank body float-stopping blocks in a one-to-one corresponding manner; the lower supporting structure comprises a spring supporting mechanism, a fixing block and a saddle; wherein the spring supporting mechanism comprises two rows of steel plate springs fixed on a bottom surface of the liquid tank groove and a spring supporting plate fixed on top surfaces of the two rows of steel plate springs; the fixing block is installed on a top surface of the spring supporting plate; the saddle is fixed on a top surface of the fixing block by epoxy glue and connected with the head heavy plate. A vacuum ring is fixed on an upper inner wall surface of the hemispherical lower head of the tank body; a plurality of reinforcing ring knee plates are circumferentially and uniformly fixed between a top surface of the tank body reinforcing ring and an outer surface of the barrel of the tank body and staggered with the plurality of float-stopping bases; reinforcing ring knee plates are also fixed between a bottom surface of the tank body reinforcing ring and the outer surface of the barrel of the tank body at positions corresponding to the plurality of float-stopping bases; the float-stopping base is welded and fixed on the top surface of the tank body reinforcing ring; the float-stopping block is fixed on a top surface of the float-stopping base by epoxy glue; the steel plate spring is bent into a C shape from a strip-shaped steel plate, one end of which extends a vertical support plate and the other end extends a horizontal support plate; a plurality of spring steel plates of each row of spring steel plates are arranged in an up-and-down staggered manner and are also up-and-down staggered and connected with a plurality of spring steel plates of the other row. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The support structure for a vertical C-type liquefied gas storage tank for ships according to claim 1, characterized by ​ 3. The support structure for a vertical C-type liquefied gas storage tank for ships according to claim 1, characterized by ​ 4. The support structure for a vertical C-type liquefied gas storage tank for ships according to claim 1, characterized by ​ 5. The support structure for a vertical C-type liquefied gas storage tank for ships according to claim 1, characterized by ​ 6. The support structure for a vertical C-type liquefied gas storage tank for ships according to claim 1, characterized by The saddle comprises a saddle bottom plate fixed on the top surface of the fixed wooden block by epoxy glue, a saddle web plate fixed on the middle top surface of the saddle bottom plate, a plurality of pairs of symmetrical saddle reinforcing knee plates fixed on the two side surfaces of the saddle web plate, and a plurality of knee plate connecting plates connected between adjacent saddle reinforcing knee plates; the top surface of the saddle web plate is a spherical arc surface matched with the head heavy weight plate, and the top end of the saddle web plate is inserted into the insertion slot of the head heavy weight plate.

7. The support structure for a vertical C-type liquefied gas storage tank for ships according to claim 6, characterized in that, Each of the saddle reinforcing knee plates is a right-angle trapezoid, and the extension line of the outer side inclined waist edge of each of the saddle reinforcing knee plates passes through the spherical center of the lower head.

8. The support structure for a vertical C-type liquefied gas storage tank for ships according to claim 1, characterized by The sliding wooden block and the fixed wooden block are respectively installed in the wooden block fence.

Images