A ship shock-resistant pressure storage tank

Abstract

The application relates to a ship anti-seismic pressure storage tank and relates to the technical field of ship storage equipment. In order to solve the problem of poor anti-seismic capability of traditional pressure storage tanks, the application comprises a tank body, the bottom of the tank body is provided with a plurality of arc-shaped saddles, the plurality of arc-shaped saddles are sequentially arranged along the length direction of the tank body, a supporting frame is arranged below the plurality of arc-shaped saddles, an anti-seismic base is arranged at the bottom of the supporting frame, the number of the anti-seismic base is at least two, the anti-seismic base comprises a connecting plate, a lower base plate and a buffer assembly, the connecting plate is arranged at the bottom of the supporting frame, the buffer assembly is arranged between the lower base plate and the connecting plate, the buffer assembly comprises a main buffer damper and a plurality of auxiliary buffer dampers, the main buffer damper is arranged at the center of the lower base plate, and the plurality of auxiliary buffer dampers are respectively arranged at each corner of the lower base plate. The application effectively disperses and consumes vibration energy, provides stable support for the tank body, and improves the anti-seismic performance of the storage tank.

Description

Technical Field

[0001] This application relates to the field of ship storage equipment technology, and in particular to a ship earthquake-resistant pressure storage tank. Background Technology

[0002] Marine pressure storage tanks are the core equipment of ship fuel storage systems, widely used in the transportation and supply of clean energy such as liquefied natural gas, methanol, ammonia, and hydrogen. With the International Maritime Organization's strict restrictions on ship carbon emissions, the global shipping industry is accelerating its transition to low-carbon fuels, driving marine pressure storage tanks towards larger, higher-pressure, and cryogenic designs. The special operating environment of marine pressure storage tanks poses severe challenges to their safety.

[0003] Ships are subjected to multiple factors during navigation, including wave impact, engine vibration, and dynamic loads during cargo loading and unloading. Especially in extreme sea conditions, such as typhoons and earthquakes, storage tanks may experience structural failure due to resonance or overload, leading to catastrophic consequences such as fuel leaks. The seismic resistance of traditional marine pressure storage tanks mainly relies on passive stiffness reinforcement, that is, by increasing the thickness of the tank wall and reinforcing ribs to optimize the support structure and improve the overall stiffness to resist vibration. However, the seismic resistance effect is poor and needs to be improved. Utility Model Content

[0004] To address the problem of poor seismic resistance in traditional pressure tanks, this application provides a seismically resistant pressure storage tank for ships.

[0005] The technical solution for a ship seismic-resistant pressure storage tank provided in this application is as follows:

[0006] A ship seismic-resistant pressure storage tank includes a tank body with multiple arc-shaped saddles at the bottom of the tank body. The multiple arc-shaped saddles are arranged sequentially along the length of the tank body. A support frame is provided below the multiple arc-shaped saddles. A seismic-resistant base is provided at the bottom of the support frame. The number of seismic-resistant bases is at least two. The seismic-resistant base includes a connecting plate, a lower base plate, and a buffer assembly. The connecting plate is arranged at the bottom of the support frame. The buffer assembly is arranged between the lower base plate and the connecting plate. The buffer assembly includes a main buffer damper and several secondary buffer dampers. The main buffer damper is arranged at the center of the lower base plate, and the several secondary buffer dampers are respectively arranged at each corner of the lower base plate.

[0007] Because ships are subjected to multiple factors during navigation, such as wave impact, engine vibration, and dynamic loads during cargo loading and unloading, especially in extreme sea conditions such as typhoons and earthquakes, storage tanks may experience structural failure due to resonance or overload, leading to catastrophic consequences such as fuel leakage. The seismic resistance of traditional marine pressure storage tanks mainly relies on passive stiffness enhancement, that is, by increasing the thickness of the tank wall and reinforcing ribs to optimize the support structure and improve the overall stiffness to resist vibration, but the seismic resistance effect is poor. By adopting the above-mentioned technical solution, including the tank body, the tank body is installed on the arc-shaped saddle, the arc-shaped saddle is located at the top of the support frame, and the seismic base is located at the bottom of the support frame. The seismic base includes a connecting plate, a lower base plate, and a buffer assembly, wherein the buffer assembly includes a main buffer damper and several secondary buffer dampers.

[0008] When a ship is subjected to vibrations caused by wave impacts, engine vibrations, dynamic loads during cargo loading and unloading, and extreme sea conditions, the vibrations first act on the lower base plate of the seismic-resistant foundation. The main buffer damper located at the center of the lower base plate begins to work, absorbing and dissipating vibration energy through its own damping characteristics, buffering and reducing the vertical vibrations experienced by the tank, and reducing the direct impact of the vibrations on the tank. At the same time, several secondary buffer dampers distributed at each corner of the lower base plate are symmetrically distributed around the main buffer damper and work together to buffer and reduce vibrations experienced by the tank from various angles, further dispersing and dissipating vibration energy, and enhancing the tank's seismic resistance in all directions. The support frame, through its overall structure, further disperses and transmits the vibrations after they have been damped by the buffer components, while providing stable support for the tank. The arc-shaped saddle fits tightly against the outer wall of the tank, distributing the weight of the tank evenly on the support frame, limiting the swaying of the tank to a certain extent, and ensuring the stability of the tank during vibration.

[0009] By using an arc-shaped saddle, support frame, and seismic base, vibrations first act on the lower base plate of the seismic base. The main damper at the center of the lower base plate absorbs and dissipates vertical vibration energy through its own damping characteristics. The secondary dampers at each corner work together to buffer and reduce vibrations at various angles, effectively dispersing and dissipating vibration energy, and enhancing the tank's seismic resistance in all directions. The overall structure of the support frame and the reinforced diagonal braces further disperse and transmit the vibrations after being damped by the buffer components, and provide stable support for the tank. The arc-shaped saddle fits tightly against the outer wall of the tank, evenly distributing the tank's weight and limiting its sway, ensuring the tank's stability during vibration, improving the seismic performance of the storage tank, and effectively avoiding catastrophic consequences such as structural failure and fuel leakage caused by resonance or overload.

[0010] Optionally, the support frame includes several trusses, which are spliced ​​together to form an integral structure, and reinforcing diagonal braces are provided inside adjacent trusses.

[0011] By adopting the above technical solution, several trusses are spliced ​​together to form a support frame, and adjacent trusses are welded with reinforcing diagonal braces. Through the setting of trusses and reinforcing diagonal braces, the splicing of trusses allows the support frame to be flexibly constructed according to the tank size. The welding of reinforcing diagonal braces between adjacent trusses enhances the overall rigidity and structural strength of the support frame. When facing complex and intense vibrations and stresses generated by wave impacts, engine vibrations, dynamic loads during cargo loading and unloading, and extreme sea conditions, it can effectively disperse and transmit these external forces, avoid local stress concentration, reduce the risk of frame deformation and damage, and provide stable support for the tank.

[0012] Optionally, the inner curved surface of the arc-shaped saddle matches the outer wall of the tank, and the bottom of the arc-shaped saddle is provided with fastening bolts for fixing to the truss in the support frame.

[0013] By adopting the above technical solution, the inner wall surface of the arc-shaped saddle matches the outer wall of the tank. Through the setting of the arc-shaped saddle, the precise matching of the inner wall surface achieves a tight fit with the tank, increasing the contact area and evenly distributing the weight of the tank to the support frame. This effectively avoids damage to the tank caused by local stress concentration and extends the service life of the tank.

[0014] Optionally, the bottom surface of the lower substrate is provided with a plurality of anti-slip protrusions, which are evenly distributed in an array on the bottom surface of the lower substrate.

[0015] By adopting the above technical solution, several anti-slip protrusions are formed on the bottom surface of the lower base plate. By setting several anti-slip protrusions, the anti-slip protrusions can increase the friction between the anti-slip protrusions and the mounting base surface, effectively preventing the anti-seismic base from sliding or shifting when under force, and ensuring the positional stability of the anti-seismic base and the entire storage tank during the ship's navigation.

[0016] Optionally, several of the secondary buffer dampers are symmetrically distributed around the main buffer damper, each of the secondary buffer dampers has the same structural dimensions, and the axis of each secondary buffer damper is parallel to the axis of the main buffer damper.

[0017] By adopting the above technical solution, several secondary buffer dampers are symmetrically distributed around the main buffer damper. The arrangement of the secondary buffer dampers allows the impact force to be evenly distributed when the buffer is subjected to force, effectively avoiding local stress concentration, enhancing the overall buffering effect, and improving the stability of the buffer assembly.

[0018] Optionally, the top of the tank is provided with a feed inlet and a spare port, and the bottom of the tank is provided with discharge ports on both sides along its length.

[0019] By adopting the above technical solution, the feed inlet and spare interface are formed at the top of the tank, and the discharge interfaces are formed on both sides of the bottom of the tank. With the feed inlet, spare interface and discharge interface set, the feed inlet is set at the top to facilitate the smooth entry of materials into the tank under the action of gravity, which improves the loading efficiency. The spare interface provides a solution for special situations and ensures the continuity of tank use. The discharge interfaces on both sides of the bottom facilitate the rapid discharge of materials in the tank from different positions. The discharge direction and speed can be adjusted according to actual needs, which effectively improves the material discharge efficiency.

[0020] Optionally, an annular overflow baffle is provided around the feed inlet of the tank, and the overflow baffle is arranged around the feed inlet circumferentially.

[0021] By adopting the above technical solution, an overflow baffle is formed around the outside of the feed inlet. With the setting of the overflow baffle, when the material surges or splashes due to improper operation or excessive flow during the feeding process into the tank, the overflow baffle can play an effective blocking role, intercepting the material that may overflow within the baffle range, preventing the material from overflowing to the outside of the tank, avoiding material waste and pollution and damage to the surrounding environment and equipment.

[0022] Optionally, the top of the tank is also provided with lifting lugs for hoisting, and the lifting lugs are symmetrically arranged on the tank.

[0023] By adopting the above technical solution, the lifting lugs are welded and fixed to the top of the tank. The symmetrical distribution of the lifting lugs ensures that the tension on the tank is evenly distributed during the lifting process, effectively avoiding tank tilting due to uneven force and improving the safety of the lifting operation.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. Through the setting of arc-shaped saddle, support frame and seismic base, the vibration first acts on the lower base plate of the seismic base. The main buffer damper at the center of the lower base plate absorbs and consumes the vertical vibration energy through its own damping characteristics. The secondary buffer dampers at each corner work together to buffer and reduce vibration at each angle, effectively disperse and consume vibration energy, and enhance the seismic resistance of the tank in all directions. The overall structure of the support frame and the reinforced diagonal bracing further disperse and transmit the vibration after being damped by the buffer components, and provide stable support for the tank. The arc-shaped saddle fits tightly with the outer wall of the tank, evenly distributes the weight of the tank and limits its sway, ensuring the stability of the tank during vibration, improving the seismic performance of the storage tank, and effectively avoiding catastrophic consequences such as structural failure and fuel leakage caused by resonance or overload.

[0026] 2. By setting the arc-shaped saddle, the precise matching of the inner wall curved surface achieves a tight fit with the tank body, increasing the contact area and evenly distributing the weight of the tank body to the support frame, effectively avoiding damage to the tank body caused by local stress concentration and extending the service life of the tank body.

[0027] 3. By setting several anti-slip protrusions, the anti-slip protrusions can increase the friction between the anti-slip base and the mounting base, effectively preventing the anti-seismic base from sliding or shifting when under stress, and ensuring the positional stability of the anti-seismic base and the entire storage tank during the ship's navigation. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of a ship's anti-seismic pressure storage tank according to an embodiment of this application.

[0029] Figure 2 This is a structural schematic diagram illustrating the connection relationship between the tank and the arc-shaped saddle in the embodiments of this application.

[0030] Figure 3 This is a front view of a ship's anti-seismic pressure storage tank according to an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Tank body; 2. Arc-shaped saddle; 3. Support frame; 31. Truss; 32. Reinforcing diagonal brace; 4. Seismic base; 41. Connecting plate; 42. Lower base plate; 43. Buffer assembly; 431. Main buffer damper; 432. Secondary buffer damper; 5. Anti-slip protrusion; 6. Inlet; 7. Spare interface; 8. Discharge interface; 9. Overflow baffle; 10. Lifting lug. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0033] This application discloses a ship's earthquake-resistant pressure storage tank. (Refer to...) Figure 1 The ship's anti-seismic pressure storage tank includes a tank body 1. In this embodiment, the tank body 1 is hollow inside and is used to store corresponding materials. Lifting lugs 10 are welded and fixed to the top of the tank body 1. There are two sets of lifting lugs 10, which are symmetrically distributed on the tank body 1. The lifting lugs 10 can ensure that the tension on the tank body 1 is evenly distributed during the lifting process, effectively avoiding the tilting of the tank body 1 due to uneven force, and improving the safety of the lifting operation.

[0034] Reference Figure 1The top of the tank body 1 is formed with a feed inlet 6 and a spare port 7. At the same time, discharge ports 8 are formed on both sides of the bottom of the tank body 1 along its length. In this embodiment, both the feed inlet 6 and the spare port 7 are equipped with corresponding valve covers. The discharge ports 8 are connected to subsequent equipment and are equipped with corresponding control valves. The feed inlet 6 is located at the top to facilitate the smooth entry of materials into the tank body 1 under the action of gravity, which improves the loading efficiency. The spare port 7 provides a solution for special situations and ensures the continuity of use of the tank body 1. The discharge ports 8 on both sides of the bottom facilitate the rapid discharge of materials from the tank from different positions. The discharge direction and speed can be adjusted according to actual needs, which effectively improves the material discharge efficiency.

[0035] Reference Figure 1 The feed inlet 6 of the tank body 1 is welded with an overflow baffle 9. The overflow baffle 9 is arranged around the feed inlet 6. During the feeding process of the tank body 1, when the material surges or splashes due to improper operation or excessive flow, the overflow baffle 9 can effectively block the material that may overflow within the baffle range, prevent the material from overflowing to the outside of the tank body 1, avoid material waste and pollution and damage to the surrounding environment and equipment of the tank body 1.

[0036] Reference Figure 1 and Figure 2 Multiple arc-shaped saddles 2 are fixedly installed at the bottom of the tank body 1. In this embodiment, the tank body 1 is arranged horizontally on multiple arc-shaped saddles 2. The multiple arc-shaped saddles 2 are arranged sequentially along the length of the tank body 1. The inner wall surface of the arc-shaped saddles 2 matches the outer wall of the tank body 1.

[0037] Reference Figure 1 A support frame 3 is installed below multiple arc-shaped saddles 2. The support frame 3 includes several trusses 31, which are spliced ​​together by welding to form an integral structure. Reinforcing diagonal braces 32 are welded inside adjacent trusses 31. In this embodiment, each arc-shaped saddle 2 is equipped with fastening bolts at its bottom for fixing to the trusses 31 in the support frame 3. The splicing of trusses 31 allows the support frame 3 to be flexibly constructed according to the size of the tank 1. The welding of reinforcing diagonal braces 32 between adjacent trusses 31 enhances the overall rigidity and structural strength of the support frame 3. When facing complex and intense vibrations and stresses generated by wave impact, engine vibration, dynamic loads during cargo loading and unloading, and extreme sea conditions, it can effectively disperse and transmit these external forces, avoid local stress concentration, reduce the risk of frame deformation and damage, and provide stable support for the tank 1.

[0038] Reference Figure 1The bottom of the support frame 3 is equipped with an anti-seismic base 4. There are at least two anti-seismic bases 4. Each anti-seismic base 4 includes a connecting plate 41, a lower base plate 42 and a buffer assembly 43. The connecting plate 41 is detachably fixed to the bottom of the support frame 3. The lower base plate 42 is installed on the mounting base surface of the ship. The lower base plate 42 and the mounting base surface can be fixed by bolts or other means. The buffer assembly 43 is arranged between the lower base plate 42 and the connecting plate 41.

[0039] Reference Figure 1 and Figure 3 The buffer assembly 43 includes a main buffer damper 431 and several secondary buffer dampers 432. The main buffer damper 431 is arranged at the center of the lower base plate 42, and the secondary buffer dampers 432 are respectively arranged at each corner of the lower base plate 42. In this embodiment, there are four sets of secondary buffer dampers 432, which are symmetrically distributed around the main buffer damper 431. Each secondary buffer damper 432 has the same structural dimensions, and the axis of each secondary buffer damper 432 is parallel to the axis of the main buffer damper 431. In this embodiment, the main buffer damper 431 can be a hydraulic damper, and the secondary buffer dampers 432 can be high-damping rubber shock absorbers. The buffer assembly 43 enables the impact force to be evenly distributed when the buffer is subjected to force, effectively avoiding local stress concentration and enhancing the overall buffering effect.

[0040] Reference Figure 3 The bottom surface of the lower substrate 42 is formed with a number of anti-slip protrusions 5, which are evenly distributed in an array on the bottom surface of the lower substrate 42. The anti-slip protrusions 5 can increase the friction between the substrate and the mounting base, effectively preventing the anti-vibration base 4 from sliding or shifting when subjected to force, and ensuring the positional stability of the anti-vibration base 4 and the entire storage tank during the ship's navigation.

[0041] The implementation principle of a ship seismic-resistant pressure storage tank according to an embodiment of this application is as follows: When a ship is subjected to vibrations caused by wave impacts, engine vibrations, dynamic loads during cargo loading and unloading, and extreme sea conditions, the vibrations first act on the lower base plate 42 of the seismic-resistant base 4. The main buffer damper 431 located at the center of the lower base plate 42 starts to work, absorbing and dissipating vibration energy through its own damping characteristics, buffering and reducing the vertical vibrations received by the tank 1, and reducing the direct impact of the vibrations on the tank 1. At the same time, several auxiliary buffer dampers 432 distributed at each corner of the lower base plate 42 further buffer the vibrations. The shock dampers 431 are symmetrically distributed around the center and work together to buffer and reduce the vibrations from various angles to the tank 1, further dispersing and consuming vibration energy, and enhancing the tank 1's seismic resistance in all directions. The support frame 3, through its overall structure and reinforced diagonal braces 32, further disperses and transmits the vibrations after being damped by the buffer components 43, while providing stable support for the tank 1. The arc-shaped saddle 2 fits tightly against the outer wall of the tank 1, evenly distributing the weight of the tank 1 onto the support frame 3, limiting the swaying of the tank 1 to a certain extent, and ensuring the stability of the tank 1 during vibration.

[0042] With the arrangement of the arc-shaped saddle 2, the support frame 3, and the seismic base 4, the vibration first acts on the lower base plate 42 of the seismic base 4. The main buffer damper 431 at the center of the lower base plate 42 absorbs and consumes the vertical vibration energy through its own damping characteristics. The secondary buffer dampers 432 at each corner work together to buffer and reduce vibration at each angle, effectively dispersing and consuming vibration energy, and enhancing the seismic resistance of the tank 1 in all directions. The overall structure of the support frame 3 and the reinforcing diagonal brace 32 further disperse and transmit the vibration after being damped by the buffer component 43, and provide stable support for the tank 1. The arc-shaped saddle 2 fits tightly against the outer wall of the tank 1, evenly distributing the weight of the tank 1 and limiting its sway, ensuring the stability of the tank 1 during vibration, improving the seismic performance of the storage tank, and effectively avoiding catastrophic consequences such as structural failure and fuel leakage caused by resonance or overload.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A ship seismic-resistant pressure storage tank, comprising a tank body, characterized in that: The tank body has multiple arc-shaped saddles at its bottom, arranged sequentially along the length of the tank body. A support frame is provided below the arc-shaped saddles, and a seismic base is provided at the bottom of the support frame. There are at least two seismic bases, each including a connecting plate, a lower base plate, and a buffer assembly. The connecting plate is located at the bottom of the support frame, and the buffer assembly is located between the lower base plate and the connecting plate. The buffer assembly includes a main buffer damper and several secondary buffer dampers. The main buffer damper is located at the center of the lower base plate, and the secondary buffer dampers are respectively located at each corner of the lower base plate.

2. The ship seismic-resistant pressure storage tank according to claim 1, characterized in that: The support frame includes several trusses, which are spliced ​​together to form an integral structure, and reinforcing diagonal braces are provided inside adjacent trusses.

3. A ship seismic-resistant pressure storage tank according to claim 2, characterized in that: The inner curved surface of the arc-shaped saddle matches the outer wall of the tank, and the bottom of the arc-shaped saddle is provided with fastening bolts for fixing to the truss in the support frame.

4. A ship seismic-resistant pressure storage tank according to claim 1, characterized in that: The bottom surface of the lower substrate is provided with a plurality of anti-slip protrusions, which are evenly distributed in an array on the bottom surface of the lower substrate.

5. A ship seismic-resistant pressure storage tank according to claim 1, characterized in that: The secondary buffer dampers are symmetrically distributed around the main buffer damper. Each secondary buffer damper has the same structural dimensions, and the axis of each secondary buffer damper is parallel to the axis of the main buffer damper.

6. A ship seismic-resistant pressure storage tank according to claim 1, characterized in that: The top of the tank is provided with a feed inlet and a spare port, and the bottom of the tank is provided with discharge ports on both sides along its length.

7. A ship seismic-resistant pressure storage tank according to claim 6, characterized in that: An annular overflow baffle is provided around the feed inlet of the tank, and the overflow baffle is arranged around the circumference of the feed inlet.

8. A ship seismic-resistant pressure storage tank according to claim 1, characterized in that: The top of the tank is also provided with lifting lugs for hoisting, and the lifting lugs are symmetrically arranged on the tank.

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