CN220749812U - Cargo tank for low-pressure liquid carbon dioxide ship - Google Patents
Cargo tank for low-pressure liquid carbon dioxide ship Download PDFInfo
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- CN220749812U CN220749812U CN202322395613.7U CN202322395613U CN220749812U CN 220749812 U CN220749812 U CN 220749812U CN 202322395613 U CN202322395613 U CN 202322395613U CN 220749812 U CN220749812 U CN 220749812U
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- bearing mechanism
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000007788 liquid Substances 0.000 title claims abstract description 53
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 27
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 106
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 239000002023 wood Substances 0.000 claims description 37
- 229920006335 epoxy glue Polymers 0.000 claims description 16
- 239000003351 stiffener Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 241001125292 Balaena mysticetus Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a cargo tank for a low-pressure liquid carbon dioxide ship, which comprises a tank body, a bearing mechanism, a swinging stopping wall, an air chamber, a liquid collecting well, a tank mouth pipe and a bearing mechanism. The tank body comprises a cylinder body, a bow seal head and a stern seal head. The bearing mechanism comprises a middle reinforcing ring arranged on the inner wall of the middle part of the length of the cylinder body and a bow reinforcing ring and a stern reinforcing ring symmetrically arranged on the inner wall of the cylinder body in front of and behind the middle reinforcing ring; the oscillation stopping wall is arranged in the inner cavity of the middle reinforcing ring; the air chamber is arranged on the top surface of the middle part of the tank body; the liquid collecting well is arranged at the lowest part of the middle part of the tank body; the tank mouth pipe is arranged in the inner cavity of the cylinder body of the tank body and penetrates out of the wall surface of the cylinder body upwards; the bearing mechanism comprises a fixed bearing mechanism which is correspondingly arranged between the bottom of the cylinder body and the saddle of the middle ship body and a sliding bearing mechanism which is correspondingly arranged between the bottom of the cylinder body and the saddle of the ship body and the stern. The utility model not only can improve the volume of the storage tank, but also is safer and more reliable.
Description
Technical Field
The utility model relates to a cargo tank for a low-pressure liquid carbon dioxide ship.
Background
The published data shows that the annual growth rate of the future carbon capture and storage markets will reach over 30%, and as more and more carbon dioxide marine sequestration projects are developed, the global demand for CO2 transport vessels will also proliferate. At present, besides the small ships with medium pressure used in the commercial carbon dioxide transportation of Nordic, the rest stays in the stage of the principle Approval (AIP) of the class society mostly, and the construction is not yet put into practice, and the time interval from approval to construction is generally 3-5 years.
LCO 2 Cargo tanks as key core equipment for CO2 transport vessels, currently LCO 2 The cargo tank is basically designed in a full-pressure mode of the LPG cargo tank when the tyre is removed, a double saddle, a single-channel reinforcing ring and a single-channel pressure-bearing wood block structure are adopted, the design temperature is minus 35 ℃, the design pressure is 19bar, the steel plate material is P690QL2, and 9% of Ni materials are used for a small part of projects, but the relative cost is uneconomical. Because the density of LPG is less than that of LCO2, conventional cargo tank structures tend to limit the strength of LCO2 tanks.
Based on the current material strength grade, the maximum storage tank volume is no more than 3750m for the current products on the market 3 The volume is increased again, the wall thickness of the tank body cannot be controlled within 50mm, and if the wall thickness of the tank body exceeds more than 50mm, the classification society can put new severe requirements, which is unfavorable for the design and construction of products. With the vigorous development of the liquid carbon dioxide market, the existing transportation capacity can not meet the market demand far, and the gap of mass transportation is urgent to develop new products to fill the gap.
The limit of the volume of a single tank is about 4000m 3 The development of higher-grade steel products has high cost and large risk coefficient,the probability of acceptance by the class society is also relatively low. Thus LCO is now 2 The cargo tank is limited by the medium pressure limit and cannot be increased further in volume.
According to a standard calculation formula of a class society for the wall thickness of the tank body, the method comprises the following steps:
in the above, s is the wall thickness of the tank body, D 0 Is the outer diameter of the tank body, p c For the design pressure, v is the joint coefficient, is the fixed coefficient, c is the corrosion margin, is the fixed coefficient, σ t Is the allowable stress at the design temperature.
From the above formula, it can be found that allowable stress sigma is maintained while keeping the wall thickness s of the cargo tank unchanged t And design pressure p c Inversely proportional, i.e. with design pressure p c And accordingly the performance requirements for the material may be reduced. It can be found by the formula that the design pressure p c And the outer diameter D of the tank body 0 Also in inverse proportion, in order to increase the tank volume as much as possible, the pressure p can be designed c Is achieved by a reduction in the number of parts. Therefore, through the research and analysis, the application prospect of the low-pressure scheme is wide, and the future development is immeasurable.
The density of the traditional LNG liquid cargo is 500Kg/m 3 The density of LEG liquid is 972Kg/m 3 LCO2 liquid-cargo density of 1100Kg/m under medium pressure scheme 3 Whereas the low pressure scheme results in a liquid density of 1170Kg/m due to the lower design temperature (-55 ℃ C.) of 3 Thus, there is a higher demand for the design of low pressure LCO2 cargo tanks.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the cargo tank for the low-pressure liquid carbon dioxide ship, which not only can greatly improve the volume of a storage tank, but also is safer and more reliable.
The purpose of the utility model is realized in the following way: a cargo tank for a low-pressure liquid carbon dioxide ship comprises a tank body, a bearing mechanism, a swinging stopping wall, an air chamber, a liquid collecting well, a tank mouth pipe and a bearing mechanism; the tank body comprises a cylindrical barrel body, and a bow seal head and a stern seal head which are connected to the two ends of the barrel body in a one-to-one correspondence manner; wherein,
the bearing mechanism comprises a middle reinforcing ring, a bow reinforcing ring and a stern reinforcing ring, and the middle reinforcing ring is arranged on the inner wall of the middle part of the length of the cylinder; the bow reinforcing ring and the stern reinforcing ring are symmetrically arranged on the inner walls of the cylinder body at the front and the rear of the middle reinforcing ring;
the anti-swing wall is arranged in the inner cavity of the middle reinforcing ring;
the air chamber is arranged on the top surface of the middle part of the cylinder;
the liquid collecting well is arranged at the lowest part of the middle part of the cylinder body;
the tank mouth pipe is arranged in the inner cavity of the cylinder body and penetrates out of the wall surface of the cylinder body upwards;
the bearing mechanism comprises a fixed bearing mechanism and two sliding bearing mechanisms; the fixed pressure-bearing mechanism and the middle reinforcing ring are correspondingly arranged between the bottom of the cylinder body and the middle hull saddle; the two sliding bearing mechanisms, the bow reinforcing ring and the stern reinforcing ring are arranged between the bottom of the cylinder body and the bow hull saddle and between the bottom of the cylinder body and the stern hull saddle in a one-to-one correspondence manner.
The cargo tank for the low-pressure liquid carbon dioxide ship comprises two annular reinforcing ring webs, wherein the outer ends of the reinforcing ring webs are fixed on the inner wall of the cylinder, and the reinforcing ring panels are fixed between the inner ends of the two reinforcing ring webs;
the anti-swing wall is fixed in the middle of the reinforced ring panel;
the structure of the bow reinforcing ring and the structure of the stern reinforcing ring are the same as the structure of the middle reinforcing ring;
the fixed pressure-bearing mechanism comprises two plugboards and two fixed wood blocks; wherein,
the two plugboards and the two reinforcing ring webs of the middle reinforcing ring are fixed on the outer surface of the bottom of the cylinder in a one-to-one correspondence manner;
a groove matched with the plugboard is formed in the middle of the top surface of each fixed wood block; the two fixed wood blocks are fixed in the hull saddle through epoxy glue, the two plugboards are inserted into grooves on the top surfaces of the two fixed wood blocks in a one-to-one correspondence manner, and the two fixed wood blocks are fixed on the two plugboards and the outer surface of the bottom of the barrel in a one-to-one correspondence manner through the epoxy glue;
a groove is formed in the middle of the top surface of each fixed wood block; the two fixed wood blocks are fixed in the saddle of the middle ship body through epoxy glue, two plugboards fixed on the outer surface of the bottom of the cylinder body are correspondingly inserted into grooves on the top surfaces of the two fixed wood blocks one by one, and the two fixed wood blocks are correspondingly fixed on the two plugboards and the outer surface of the bottom of the cylinder body one by one through epoxy glue;
each sliding pressure-bearing mechanism comprises two pairs of baffles, a lower layer wood block and two upper layer wood blocks; wherein,
the two pairs of baffles are fixed on the outer surface of the bottom of the cylinder body in one-to-one correspondence with the two reinforcing ring webs of the bow reinforcing ring and the two reinforcing ring webs of the tail reinforcing ring;
the lower layer wood blocks are fixed in the bow hull saddle and the stern hull saddle through epoxy glue;
the two upper-layer wood blocks are arranged on the top surface of the lower-layer wood block side by side, the two pairs of baffle plates are sleeved on the upper parts of the two upper-layer wood blocks in a one-to-one correspondence manner, and the two upper-layer wood blocks are fixed in the two pairs of baffle plates and on the outer surface of the bottom of the cylinder body in a one-to-one correspondence manner through epoxy glue.
According to the cargo tank for the low-pressure liquid carbon dioxide ship, the maximum width of the two sides of the reinforcing ring web plate in the range of 15 degrees upwards and 45 degrees downwards of the horizontal center line is 2500mm, the width of the rest parts is 2000mm, and the inner end of the reinforcing ring web plate is non-circular.
The cargo tank for the low-pressure liquid carbon dioxide ship is characterized in that a plurality of waist-shaped lightening holes are uniformly formed in the reinforcing ring panel along the circumference, and a plurality of reinforcing rib plates are arranged between the outer surface of the reinforcing ring web plate and the outer surface of the reinforcing ring panel.
The cargo tank for the low-pressure liquid carbon dioxide ship has the following characteristics:
1) The maximum steam working pressure is 8bar, and the volume of a single tank reaches 8000m 3 -10000 m 3 ；
2) The prior fixed pressure-bearing mechanism and the prior sliding pressure-bearing mechanism are adjusted to be configured of the fixed pressure-bearing mechanism and the two sliding pressure-bearing mechanisms, so that the stress area of a saddle of a ship body is increased more effectively, and the reinforcing ring webs of the middle reinforcing ring, the bow reinforcing ring and the stern reinforcing ring are optimized to be a double-channel structure from the prior single-channel structure, so that the middle reinforcing ring, the bow reinforcing ring and the stern reinforcing ring still have sufficient supporting function under the condition of loading high-density liquid cargoes; the fixed and two sliding pressure-bearing mechanisms can reduce the deflection of the cross-middle section of the cylinder, effectively improve the bending deformation of the cylinder, improve the stress state of the liquid tank, make full use of materials and prevent vibration in the operation process of the liquid tank; in addition, the length and the cabin capacity limit of the liquid tank with double pressure-bearing mechanisms can be broken through by using a fixed pressure-bearing mechanism and a two-sliding pressure-bearing mechanism, so that the length of the liquid tank can be designed to be larger under the same diameter;
3) Most of the filling pipes are moved to the cylinder, so that the number of pipe orifices on the bow and stern seals is reduced, the size of the bow and stern seals is reduced, the strength of the bow and stern seals can be effectively reduced due to excessive holes, and local stress can be maintained at a safe level.
Drawings
FIG. 1 is a perspective view of a low pressure liquid carbon dioxide cargo tank of the present utility model;
FIG. 2 is a perspective view of the cargo tank for a low pressure liquid carbon dioxide ship of the present utility model, in longitudinal section;
FIG. 3 is a perspective view of a middle stiffener ring in a low pressure liquid carbon dioxide cargo tank of the present utility model;
FIG. 4 is a plan view of a middle stiffener ring in a low pressure liquid carbon dioxide cargo tank of the present utility model;
FIG. 5 is a longitudinal cross-sectional view of the stationary pressure mechanism in the cargo tank for a low pressure liquid carbon dioxide ship of the present utility model;
fig. 6 is a longitudinal sectional view of the sliding bearing mechanism in the cargo tank for low pressure liquid carbon dioxide ship of the present utility model.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 6, the cargo tank for low-pressure liquid carbon dioxide ship of the present utility model comprises a tank body, a bearing mechanism, a swing stopping wall 3, an air chamber 4, a liquid collecting well 5, a tank mouth pipe 6 and a pressure bearing mechanism.
The tank body comprises a cylinder body 10, and a bow seal head 1A and a stern seal head 1B which are connected at two ends of the cylinder body 10 in a one-to-one correspondence manner; wherein the cylinder 10 is cylindrical; the bow head 1A and the stern head 1B are hemispherical, disc-shaped and elliptical, and the bow head 1A and the stern head 1B in this embodiment are hemispherical.
The bearing mechanism is a main bearing structure of the cargo tank so as to ensure the safety and low risk of seating of the cargo tank; the bearing mechanism comprises a middle reinforcing ring 2A, a bow reinforcing ring 2B and a stern reinforcing ring 2C2B; wherein, the middle reinforcing ring 2A is arranged on the inner wall of the middle part of the length of the cylinder 10; the bow reinforcing ring 2B and the stern reinforcing ring 2C are symmetrically arranged on the inner walls of the cylinder 10 at the front and rear of the middle reinforcing ring 2A;
the middle reinforcing ring 2A includes two reinforcing ring webs 21 having a ring shape and outer ends fixed to the inner wall of the cylinder 10 and a reinforcing ring panel 22 fixed between the inner ends of the two reinforcing ring webs 21; a plurality of waist-round lightening holes 23 are uniformly distributed on the reinforcing ring panel 22 along the circumference, and meanwhile, the welding and other operations are convenient for workers to come in and go out; a plurality of reinforcing rib plates 24 (see fig. 3) are arranged between the outer surface of the reinforcing ring web 21 and the outer surface of the reinforcing ring panel 22; the maximum width of the two sides of the reinforcing ring web 21 in the range of 15 degrees upwards and 45 degrees downwards of the horizontal center line is 2500mm, and the width of the rest part is 2000mm, so that the inner end of the reinforcing ring web 21 is non-circular (see figure 4); structural reinforcement is ensured in the main load bearing area, i.e. in the worst operating conditions during operation of the vessel.
The structure of the bow reinforcing ring 2B and the stern reinforcing ring 2C is the same as that of the middle reinforcing ring 2A.
The oscillation stopping wall 3 is arranged in the inner cavity of the middle reinforcing ring 2A; i.e. the anti-sway wall 3 is fixed in the middle of the stiffener ring panel 22 of the middle stiffener ring 2A; the anti-sloshing wall 3 is provided with a water flowing hole, and liquid cargo can flow freely through the water flowing hole in the running process of the ship, so that the sloshing period of the liquid level is reduced, and the impact force generated by the liquid cargo in severe sloshing is reduced.
The air chamber 4 is arranged on the top surface of the middle part of the cylinder body 10; the air chamber 4 is used for intensively arranging pipe orifices so as to facilitate maintenance during operation of subsequent cargo tanks, reduce hot spots and reduce evaporation rate.
The liquid collecting well 5 is arranged at the lowest part of the middle part of the cylinder body 10; the liquid collecting well 5 is used for collecting residual liquid in the cargo tank, and is convenient for pumping of the cargo pump.
The tank mouth pipe 6 is arranged in the inner cavity of the cylinder body 10 and penetrates out of the wall surface of the cylinder body 10 upwards; the tank mouth pipe 6 comprises a pump pipe, a radar pipe, a temperature measuring pipe, a liquid level meter pipe, a sampling pipe, a discharging pipe and other small-diameter connecting pipes, and is used for connecting the tank body and a ship interface so as to realize the functions of drying, inerting, precooling, filling, discharging and the like of liquid cargo.
The bearing mechanism comprises a fixed bearing mechanism 7A and two sliding bearing mechanisms 7B; wherein, the fixed pressure-bearing mechanism 7A and the middle reinforcing ring 2A are correspondingly arranged between the bottom of the cylinder 10 and the middle hull saddle 8A; two sliding bearing mechanisms 7B are provided between the bottom of the cylinder 10 and the bow hull saddle 8B and between the bottom of the cylinder 10 and the stern hull saddle 8C in one-to-one correspondence with the bow reinforcing ring 2B and the stern reinforcing ring 2C.
The fixed bearing mechanism 7A comprises two insertion plates 71 and two fixed wooden blocks 72 (see fig. 5); wherein,
the two insertion plates 71 are fixed on the outer surface of the bottom of the cylinder 10 in one-to-one correspondence with the two reinforcing ring webs 21 of the middle reinforcing ring 2A;
the middle part of the top surface of each fixed wood block 72 is provided with a groove matched with the plugboard 71; the two fixed wooden blocks 72 are fixed in the middle hull saddle 8A through epoxy glue, the two inserting plates 71 are inserted into grooves on the top surface of the two fixed wooden blocks 72 in a one-to-one correspondence manner, and the two fixed wooden blocks 72 are fixed on the two inserting plates 71 and the bottom outer surface of the cylinder 10 in a one-to-one correspondence manner through epoxy glue; foam insulation material is filled between the two fixed wooden blocks 72, so that the heat insulation performance near the two fixed wooden blocks 72 is ensured.
Each slide bearing mechanism 7B includes two pairs of baffles 73, a lower wood block 74 and two upper wood blocks 75 (see fig. 6); wherein,
the two pairs of baffles 73 are fixed on the outer surface of the bottom of the cylinder 10 in one-to-one correspondence with the two reinforcing ring webs 21 of the bow reinforcing ring 2B and the two reinforcing ring webs 21 of the stern reinforcing ring 2C;
the lower wood block 74 is fixed in the bow hull saddle 8B and the stern hull saddle 8C through epoxy glue;
the two upper wooden blocks 75 are arranged on the top surface of the lower wooden block 74 side by side, the two pairs of baffle plates 73 are sleeved on the upper parts of the two upper wooden blocks 75 in a one-to-one correspondence manner, and the two upper wooden blocks 75 are fixed in the two pairs of baffle plates 73 and on the outer surface of the bottom of the cylinder 10 in a one-to-one correspondence manner through epoxy glue.
The fixed bearing mechanism 7A needs to be kept relatively static with the middle hull saddle 8A in the ship length direction, and the two sliding bearing mechanisms 7B are used for guaranteeing free displacement of the cargo tanks due to expansion and contraction caused by temperature change in the filling or unloading process.
The cargo tank for the low-pressure liquid carbon dioxide ship has the following characteristics:
1) The maximum steam working pressure is 8bar, and the volume of a single tank reaches 8000m 3 -10000 m 3 ；
2) The traditional one fixed pressure-bearing mechanism and one sliding pressure-bearing mechanism are adjusted to be configured of the one fixed pressure-bearing mechanism and the two sliding pressure-bearing mechanisms, so that the stress area of a saddle of a ship body is increased more effectively, the designed length of a liquid tank can be extended, the length-diameter ratio of the tank body reaches 4.1, and the hold capacity of a cargo tank is improved; the reinforcing ring webs of the middle reinforcing ring, the bow reinforcing ring and the stern reinforcing ring are optimized into a double-channel structure from the prior single-channel structure, so that the middle reinforcing ring, the bow reinforcing ring and the stern reinforcing ring still have enough supporting function under the condition of loading high-density liquid cargoes in the cargo tank; the fixed and two sliding pressure-bearing mechanisms can reduce the deflection of the cross section, effectively improve the bending deformation of the cylinder body, improve the stress state of the liquid tank, make full use of materials and prevent vibration in the operation process of the liquid tank. In addition, the length and the cabin capacity limit of the liquid tank with double pressure-bearing mechanisms can be broken through by using a fixed pressure-bearing mechanism and a two-sliding pressure-bearing mechanism, so that the length of the liquid tank can be designed to be larger under the same diameter. In addition, the fixed pressure-bearing mechanism is arranged in the middle of the cylinder, and the two sliding pressure-bearing mechanisms are symmetrically arranged in the front and the back of the fixed pressure-bearing mechanism, so that the displacement of the bow and the stern heads can be reduced as the fixed pressure-bearing mechanism is arranged in the middle area of the cylinder due to expansion caused by heat and contraction caused by cold in the process of loading and unloading liquid cargo. Meanwhile, the arrangement position of the air chamber is close to the fixed pressure-bearing mechanism, so that the displacement of a pipeline connected with the ship body is less, and the assembling accuracy can be effectively improved.
3) The part of the filling pipe is moved to the cylinder body, so that the number of pipe orifices on the bow and stern seals is reduced, the size of the bow and stern seals is reduced, the strength of the bow and stern seals can be effectively reduced due to excessive holes, and the local stress can be maintained at a safe level.
The above embodiments are provided for illustrating the present utility model and not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present utility model, and thus all equivalent technical solutions should be defined by the claims.
Claims (4)
1. A cargo tank for a low-pressure liquid carbon dioxide ship comprises a tank body, a bearing mechanism, a swinging stopping wall, an air chamber, a liquid collecting well, a tank mouth pipe and a bearing mechanism; the tank body comprises a cylindrical barrel body, and a bow seal head and a stern seal head which are connected to the two ends of the barrel body in a one-to-one correspondence manner; it is characterized in that the method comprises the steps of,
the bearing mechanism comprises a middle reinforcing ring, a bow reinforcing ring and a stern reinforcing ring, and the middle reinforcing ring is arranged on the inner wall of the middle part of the length of the cylinder; the bow reinforcing ring and the stern reinforcing ring are symmetrically arranged on the inner walls of the cylinder body at the front and the rear of the middle reinforcing ring;
the anti-swing wall is arranged in the inner cavity of the middle reinforcing ring;
the air chamber is arranged on the top surface of the middle part of the cylinder;
the liquid collecting well is arranged at the lowest part of the middle part of the cylinder body;
the tank mouth pipe is arranged in the inner cavity of the cylinder body and penetrates out of the wall surface of the cylinder body upwards;
the bearing mechanism comprises a fixed bearing mechanism and two sliding bearing mechanisms; the fixed pressure-bearing mechanism and the middle reinforcing ring are correspondingly arranged between the bottom of the cylinder body and the middle hull saddle; the two sliding bearing mechanisms, the bow reinforcing ring and the stern reinforcing ring are arranged between the bottom of the cylinder body and the bow hull saddle and between the bottom of the cylinder body and the stern hull saddle in a one-to-one correspondence manner.
2. The low pressure liquid carbon dioxide cargo tank defined in claim 1 wherein the middle stiffener ring comprises two stiffener ring webs having annular shape and outer ends secured to the inner wall of the cylinder and stiffener ring panels secured between the inner ends of the two stiffener ring webs;
the anti-swing wall is fixed in the middle of the reinforced ring panel;
the structure of the bow reinforcing ring and the structure of the stern reinforcing ring are the same as the structure of the middle reinforcing ring;
the fixed pressure-bearing mechanism comprises two plugboards and two fixed wood blocks; wherein,
the two plugboards and the two reinforcing ring webs of the middle reinforcing ring are fixed on the outer surface of the bottom of the cylinder in a one-to-one correspondence manner;
a groove matched with the plugboard is formed in the middle of the top surface of each fixed wood block; the two fixed wood blocks are fixed in the hull saddle through epoxy glue, the two plugboards are inserted into grooves on the top surfaces of the two fixed wood blocks in a one-to-one correspondence manner, and the two fixed wood blocks are fixed on the two plugboards and the outer surface of the bottom of the barrel in a one-to-one correspondence manner through the epoxy glue;
a groove is formed in the middle of the top surface of each fixed wood block; the two fixed wood blocks are fixed in the saddle of the middle ship body through epoxy glue, two plugboards fixed on the outer surface of the bottom of the cylinder body are correspondingly inserted into grooves on the top surfaces of the two fixed wood blocks one by one, and the two fixed wood blocks are correspondingly fixed on the two plugboards and the outer surface of the bottom of the cylinder body one by one through epoxy glue;
each sliding pressure-bearing mechanism comprises two pairs of baffles, a lower layer wood block and two upper layer wood blocks; wherein,
the two pairs of baffles are fixed on the outer surface of the bottom of the cylinder body in one-to-one correspondence with the two reinforcing ring webs of the bow reinforcing ring and the two reinforcing ring webs of the tail reinforcing ring;
the lower layer wood blocks are fixed in the bow hull saddle and the stern hull saddle through epoxy glue;
the two upper-layer wood blocks are arranged on the top surface of the lower-layer wood block side by side, the two pairs of baffle plates are sleeved on the upper parts of the two upper-layer wood blocks in a one-to-one correspondence manner, and the two upper-layer wood blocks are fixed in the two pairs of baffle plates and on the outer surface of the bottom of the cylinder body in a one-to-one correspondence manner through epoxy glue.
3. The low pressure liquid carbon dioxide cargo tank as defined in claim 2, wherein the maximum width of the two sides of the reinforcing ring web plate in the range of 15 ° upward and 45 ° downward on the horizontal center line is 2500mm, and the width of the rest is 2000mm, so that the inner end of the reinforcing ring web plate is non-circular.
4. The low-pressure liquid carbon dioxide marine cargo tank as claimed in claim 2, wherein a plurality of waist-shaped lightening holes are uniformly distributed on the reinforcing ring panel along the circumference, and a plurality of reinforcing rib plates are arranged between the outer surface of the reinforcing ring web and the outer surface of the reinforcing ring panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322395613.7U CN220749812U (en) | 2023-09-04 | 2023-09-04 | Cargo tank for low-pressure liquid carbon dioxide ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322395613.7U CN220749812U (en) | 2023-09-04 | 2023-09-04 | Cargo tank for low-pressure liquid carbon dioxide ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220749812U true CN220749812U (en) | 2024-04-09 |
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ID=90551143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322395613.7U Active CN220749812U (en) | 2023-09-04 | 2023-09-04 | Cargo tank for low-pressure liquid carbon dioxide ship |
Country Status (1)
| Country | Link |
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| CN (1) | CN220749812U (en) |
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2023
- 2023-09-04 CN CN202322395613.7U patent/CN220749812U/en active Active
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