Reinforcing ring of liquid tank for large carbon dioxide ship

Abstract

The utility model discloses a reinforcing ring of a liquid tank for a large carbon dioxide ship. The reinforcing ring comprises a main ring, two auxiliary rings and two groups of connecting toggle plates, the main ring comprises a main ring web plate, a main ring panel and two surrounding plates; the outer diameter circle of the main ring web plate is a whole circle matched with the inner circle of the liquid tank, and the inner diameter circle of the main ring web plate is arranged on the upper half portion of the main ring web plate and is in an upper semicircle shape. The main ring panel is fixed at the inner diameter end of the main ring web; the two surrounding plates are fixed to the front surface and the rear surface of the upper portion of the lower half portion of the main ring web in a one-to-one correspondence mode. The two auxiliary rings are symmetrically arranged on the front side and the rear side of the main ring; each auxiliary ring comprises an auxiliary ring web plate and an auxiliary ring panel fixed at the inner diameter end of the auxiliary ring web plate; the two sets of connecting toggle plates are connected between the front surface and the rear surface of the lower half portion of the main ring web plate and the auxiliary ring web plates of the two auxiliary rings in a one-to-one correspondence mode, and the inner ends of the two sets of connecting toggle plates are fixed to the outer end faces of the two surrounding plates in a one-to-one correspondence mode. According to the utility model, the structural strength can meet the requirement, and the structural weight can be optimized.

Description

Technical Field

[0001] This utility model relates to a reinforcing ring for a large marine carbon dioxide liquid tank. Background Technology

[0002] Liquefied gas carriers serve as transport vehicles to safely transport captured carbon dioxide to storage sites or for utilization. To reduce transportation costs and improve efficiency, the cargo volume of ships has increased accordingly, creating an urgent need for larger-capacity carbon dioxide tanks.

[0003] The increase in tank volume means an increase in tank diameter and length. Furthermore, the density of cryogenic carbon dioxide is greater than that of water, posing a significant challenge to the tank's support structure. Typically, tanks have two reinforcing rings inside. In small tanks, each reinforcing ring consists of a web plate and a panel fixed to the inner diameter end of the web plate. However, current technology for large tanks uses two web plates and a panel connecting the inner diameter ends of the two web plates for each reinforcing ring. While this effectively solves the support problem for large tanks, it also introduces new challenges, such as the increased number of web plates and the narrow, enclosed space between them. In the foreseeable future, the market for carbon dioxide tanks is bound to experience new growth in demand, making the support problem for large tanks an urgent issue to address. Utility Model Content

[0004] The purpose of this invention is to fill the gap in the existing technology by providing a reinforcing ring for a large marine carbon dioxide liquid tank. Its structural strength is sufficient to meet the requirements of the support structure for large marine carbon dioxide liquid tanks, and the structural weight of the reinforcing ring can be optimized.

[0005] The purpose of this utility model is achieved as follows: a reinforcing ring for a large marine carbon dioxide liquid tank includes a main ring, two auxiliary rings, and two sets of connecting elbow plates; wherein...

[0006] The main ring includes a main ring web, a main ring face plate, and two surrounding plates. The outer diameter of the main ring web is a complete circle that matches the inner circle of the liquid tank. The inner diameter of the main ring web is opened in the upper half of the main ring web and is in the shape of an upper semicircle. Several water-permeable holes are opened in the lower part of the lower half of the main ring web. The main ring face plate is fixed to the inner diameter end of the main ring web. The surrounding plates are lower semicircular arc plates, and the two surrounding plates are fixed one-to-one on the upper front and rear surfaces of the lower half of the main ring web.

[0007] Two auxiliary rings are symmetrically arranged on the front and rear sides of the main ring; each auxiliary ring includes an auxiliary ring web and an auxiliary ring panel fixed to the inner diameter end of the auxiliary ring web; the outer diameter circle of the auxiliary ring web is a complete circle that matches the inner circle of the liquid tank, and the inner diameter circle of the auxiliary ring web is also a complete circle.

[0008] Two sets of connecting elbow plates are connected one-to-one between the front and rear surfaces of the lower half of the main ring web and the auxiliary ring webs of the two auxiliary rings, and the inner ends of the two sets of connecting elbow plates are fixed one-to-one to the outer end faces of the two surrounding plates.

[0009] The aforementioned reinforcing ring for a large marine carbon dioxide tank comprises, wherein, on the front and rear surfaces of the upper half of the main ring web, a plurality of small reinforcing ribs are radially fixed; and on the front and rear surfaces of the lower half of the main ring web, and within the area enclosed by the bottom of the surrounding plate and the main ring panel, a large grid-shaped reinforcing rib is fixed.

[0010] The reinforcing ring of the aforementioned large marine carbon dioxide liquid tank has several arc-shaped venting grooves on the top outer diameter end face and the bottom outer diameter end face of the main ring web.

[0011] The reinforcing ring of the aforementioned large marine carbon dioxide liquid tank has several arc-shaped venting grooves on the top outer diameter end face and the bottom outer diameter end face of the auxiliary ring web.

[0012] In the aforementioned reinforcing ring of a large marine carbon dioxide tank, the distribution density of the two sets of connecting elbow plates in the lower half of the main ring web is greater than the distribution density on both sides of the lower half of the main ring web.

[0013] The reinforcing ring of this utility model's large marine carbon dioxide liquid tank has the following characteristics:

[0014] 1. The solid area of ​​the main ring web is increased, that is, the inner diameter circle of the main ring web is opened in the upper half of the main ring web and is in the shape of an upper semi-circle, making the structural strength of the main ring stronger than the single web and single-face reinforcing rings of the existing technology.

[0015] 2. An auxiliary ring is set on the front and rear sides of the main ring, and the size and thickness of the auxiliary ring are smaller than those of the main ring.

[0016] 3. Small reinforcing ribs strengthen the upper half of the main ring web; large reinforcing ribs increase the strength of the main ring web to better withstand sway loads and reduce fatigue effects on the supporting structure.

[0017] 4. The connecting elbow plate connects the main ring and the two auxiliary rings, making the main ring and the two auxiliary rings form a whole. Compared with the existing double web plate and single face plate reinforcing ring, it not only solves the problem of difficult construction in the narrow and closed space formed by the single face plate and double web plate, but also reduces the thickness of the auxiliary ring face plate and auxiliary ring web plate due to the enhanced strength of the reinforcing ring of this utility model, thereby achieving the purpose of optimizing the structural weight of the reinforcing ring. Attached Figure Description

[0018] Figure 1This is a perspective view of the reinforcing ring of the large marine carbon dioxide liquid tank of this utility model;

[0019] Figure 2 This is a side view of the reinforcing ring of the large carbon dioxide marine liquid tank of this utility model;

[0020] Figure 3 This is a front view of the main ring in the reinforcing ring of the large carbon dioxide marine liquid tank of this utility model;

[0021] Figure 4 This is a front view of the auxiliary ring in the reinforcing ring of the large carbon dioxide marine liquid tank of this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Please see Figures 1 to 4 The reinforcing ring of the large carbon dioxide marine liquid tank of this utility model includes a main ring 1, two auxiliary rings 2 and two sets of connecting elbow plates 3.

[0024] The main ring 1 includes a main ring web 10, a main ring face plate 11, two surrounding plates 12, two sets of small reinforcing ribs 13, and two sets of large reinforcing ribs 14; wherein,

[0025] The outer diameter circle of the main ring web 10 is a complete circle that matches the inner circle of the liquid tank and is welded and fixed to the inner wall of the liquid tank. The inner diameter circle of the main ring web 10 is opened in the upper half of the main ring web 10 and is in the shape of an upper semi-circle, so as to ensure that the liquid can quickly fill the bottom of the liquid tank when the liquid is first injected. Several water permeable holes 100 are opened in the lower part of the lower half of the main ring web 10. The size and number of water permeable holes 100 are determined by the size of the liquid tank. Several arc-shaped venting grooves 200 are opened on the top outer diameter end face and the bottom outer diameter end face of the main ring web 10 to ensure the air pressure balance in the front and rear tank cavities of the main ring web 10.

[0026] The main ring panel 11 is fixed to the inner diameter end of the main ring web 10;

[0027] The surrounding plate 12 is a lower semi-circular arc plate, and two surrounding plates 12 are fixed one-to-one on the upper front and rear surfaces of the lower half of the main ring web plate 10.

[0028] Two sets of small reinforcing ribs 13 are radially fixed to the front and rear surfaces of the upper half of the main ring web 10 in a one-to-one correspondence;

[0029] Two sets of large reinforcing ribs 14 are fixed one-to-one on the front and rear surfaces of the lower half of the main ring web 10 and are located in the area enclosed by the bottom of the surrounding plate 12 and the main ring panel 11. Each set of large reinforcing ribs 14 is composed of several vertical reinforcing ribs and several transverse reinforcing ribs forming a grid shape.

[0030] Two auxiliary rings 2 are symmetrically arranged on the front and rear sides of the main ring 1; each auxiliary ring 2 includes an auxiliary ring web 20 and an auxiliary ring panel 21 fixed to the inner diameter end of the auxiliary ring web 20; the outer diameter circle of the auxiliary ring web 20 is a complete circle that matches the inner circle of the liquid tank and is welded and fixed to the inner wall surface of the liquid tank. The inner diameter circle of the auxiliary ring web 20 is also a complete circle, and the diameter of the inner diameter circle is slightly smaller than the diameter of the outer diameter circle, so that the ring width of the auxiliary ring web 20 is smaller and less steel is consumed; several arc-shaped venting grooves 200 are opened on the top outer diameter end face and the bottom outer diameter end face of the auxiliary ring web 20 to ensure the air pressure balance in the front and rear tank cavities of the auxiliary ring web 20.

[0031] The thickness of the auxiliary ring web 20 is less than the thickness of the main ring web 10.

[0032] Two sets of connecting elbow plates 3 are connected one-to-one between the front and rear surfaces of the lower half of the main ring web 10 and the auxiliary ring web 20 of the two auxiliary rings 2, and the inner ends of the two sets of connecting elbow plates 3 are fixed one-to-one to the outer end faces of the two surrounding plates 12; the distribution density of the two sets of connecting elbow plates 3 in the lower half of the main ring web 10 is greater than the distribution density on both sides of the lower half of the main ring web 10.

[0033] The reinforcing ring of the large marine carbon dioxide liquid tank of this utility model has the following characteristics:

[0034] 1. The solid area of ​​the main ring web is increased, that is, the inner diameter circle of the main ring web 10 is opened in the upper half of the main ring web 10 and is in the shape of an upper semi-circle, so that the structural strength of the main ring is stronger than that of the single web and single-face reinforcing rings of the prior art.

[0035] 2. An auxiliary ring 2 is set on the front and rear sides of the main ring 1, and the size and thickness of the auxiliary ring 2 are smaller than those of the main ring 1.

[0036] 3. The reinforcing ribs are divided into two groups according to their size and are symmetrically arranged on the front and rear surfaces of the main ring web 10. The small reinforcing ribs 13 are located on the front and rear surfaces of the upper half of the main ring web 10, which strengthens the upper half of the main ring web 10. The large reinforcing ribs 14 are located on the front and rear surfaces of the lower half of the main ring web 10. Due to the large size of the liquid tank and the high density of the liquid, the large reinforcing ribs 14 in the lower half of the main ring web 10 can increase the strength of the main ring web 10, so as to better withstand the sway load, and at the same time reduce the fatigue effect of the supporting structure.

[0037] 4. The connecting elbow plate 3 connects the main ring 1 and the two auxiliary rings 2, making the main ring 1 and the two auxiliary rings 2 form a whole. Compared with the existing double web plate and single face plate reinforcing ring, it not only solves the problem of difficult construction in the narrow and closed space formed by the single face plate and double web plate, but also reduces the thickness of the auxiliary ring face plate 21 and auxiliary ring web plate 20 due to the enhanced strength of the reinforcing ring of this utility model, thereby achieving the purpose of optimizing the structural weight of the reinforcing ring.

[0038] The reinforcing ring of this invention for a large marine carbon dioxide liquid tank has sufficient structural strength to meet the support structure requirements of large marine carbon dioxide liquid tanks, while simultaneously reducing the required steel weight compared to the double-web reinforcing rings of existing technologies. Since the reinforcing ring of this invention does not form the narrow, enclosed space present in the double-web reinforcing rings of existing technologies, it is also extremely convenient from the perspective of on-site welding construction, thus shortening the construction cycle.

[0039] 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. For example, the type of liquid cargo to be loaded is not limited to liquid carbon dioxide, and the type of liquid cargo tank is not limited to a single tank. 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 reinforcing ring for a large carbon dioxide marine liquid tank, comprising a main ring, two auxiliary rings and two groups of connecting brackets; characterized in that: the main ring comprises a main ring web, a main ring panel and two surrounding plates; the outer diameter circle of the main ring web is a whole circle shape matched with the inner circle of the liquid tank, the inner diameter circle of the main ring web is a half circle shape opened in the upper half of the main ring web, and a plurality of water permeable holes are opened in the lower part of the lower half of the main ring web; the main ring panel is fixed at the inner diameter end of the main ring web; the surrounding plates are half circular arc plates, and the two surrounding plates are fixed on the upper part of the front and rear surfaces of the lower half of the main ring web respectively; the two auxiliary rings are symmetrically arranged on the front and rear sides of the main ring; each auxiliary ring comprises an auxiliary ring web and an auxiliary ring panel fixed at the inner diameter end of the auxiliary ring web; the outer diameter circle of the auxiliary ring web is a whole circle shape matched with the inner circle of the liquid tank, and the inner diameter circle of the auxiliary ring web is also a whole circle shape; the two groups of connecting brackets are connected between the front and rear surfaces of the lower half of the main ring web and the auxiliary ring webs of the two auxiliary rings respectively, and the inner ends of the two groups of connecting brackets are fixed on the outer end surfaces of the two surrounding plates respectively.

2. The stiffening ring for a large carbon dioxide ship tank according to claim 1, characterized by a plurality of small reinforcing ribs are fixed on the front and rear surfaces of the upper half of the main ring web respectively; a grid-shaped large reinforcing rib is fixed on the front and rear surfaces of the lower half of the main ring web respectively in the area surrounded by the surrounding plates and the bottom of the main ring panel.

3. The stiffening ring for a large carbon dioxide ship tank according to claim 1 or 2, characterized in that, a plurality of circular arc-shaped air permeable grooves are opened on the top outer diameter end surface and the bottom outer diameter end surface of the main ring web respectively.

4. The stiffening ring for large carbon dioxide marine liquid tanks according to claim 1, characterized in that, a plurality of circular arc-shaped air permeable grooves are opened on the top outer diameter end surface and the bottom outer diameter end surface of the auxiliary ring web respectively.

5. The stiffening ring for large carbon dioxide marine liquid tanks according to claim 1, characterized in that, The distribution density of the two groups of connecting brackets in the lower part of the lower half of the main ring web is greater than the distribution density of the two groups of connecting brackets on the two sides of the lower half of the main ring web.

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