A circular core anti-collision capsule

Abstract

The present invention discloses a toroidal core anti-collision capsule, which belongs to the field of structural protection technology. Through the corresponding arrangement of structures such as a shell, an anti-collision component, and a center plug, the shell and the anti-collision component are extruded and deformed, and the combination of a one-way valve and a pressure regulating valve in the center plug are coordinated to effectively realize the absorption and release of the impact force during the collision, thereby realizing the anti-collision of the structure. The toroidal core anti-collision capsule of the present invention has a simple structure, is easy to set up and maintain, can effectively realize the collision protection of structures such as bridge piers, fully absorbs and releases the impact force generated by the collision, and can effectively control the force transmitted to the bridge pier by the anti-collision capsule during the collision, ensuring that the impact force does not exceed the bearing capacity of the protected object. At the same time, after the collision is removed, the anti-collision capsule can be quickly restored under the action of the anti-collision component, and the state of the capsule before being hit is quickly restored, which effectively simplifies the inspection and maintenance process of the anti-collision capsule, and has good application prospects and promotion value.

Description

Technical Field

[0001] The invention belongs to the technical field of structural protection, and in particular relates to a circular ring core anti-collision capsule. Background Art

[0002] In recent years, with the increasing number of ships sailing on rivers and their tonnage increasing, incidents of ships hitting bridge piers have occurred frequently. Ship-bridge collisions often cause catastrophic consequences such as damage to the ship-bridge structure, cargo leakage, environmental pollution, and casualties. Therefore, safety measures or protective devices are often installed on bridge piers to ensure the stability and safety of the structure under ship collision.

[0003] At present, common bridge pier protection devices can be divided into two categories: direct structure and indirect structure. Among them, direct structure means that the protection device is directly constructed on the protected bridge pier. After the collision occurs, the impact force directly acts on the protected bridge pier through the protection device. Indirect structure means that the protection device is not directly connected to the protected bridge, and the impact force does not directly act on the protected bridge. For both types of protection devices, although they can achieve structural protection to a certain extent, they also have certain defects.

[0004] For example, for the indirect structure protection device, the impact force when it is hit after it is set can be absorbed by the protection device, and will not act on the protected bridge pier, which has a strong protective effect on the bridge pier. However, there is often a certain distance between the indirect structure protection device and the protected bridge pier, so that it needs to occupy the river or water area, and the maintenance work is often large. In contrast, the direct structure protection device is usually directly constructed on the protected bridge pier, and is mainly divided into three types: elastic deformation type, crushing (plastic) deformation type, and displacement type. Among them, although the elastic deformation type protection device can achieve elastic recovery after being hit, and the maintenance work is small, it can only be applied to impacts with smaller energy. Once the impact exceeds its elastic deformation range, the bridge pier will be directly impacted, causing a major accident. Although the crushing deformation type protection device and the displacement type protection device can absorb huge impact energy through the plastic deformation and displacement energy of the device itself, the maintenance and repair work of the device after each impact is large, resulting in a high application cost of the protection device.

[0005] In view of the above reasons, the applicant filed a prior patent application CN201910731622.4, which specifically discloses a hydraulic anti-collision capsule, which effectively realizes the impact protection of the bridge pier by using the corresponding settings of the components in the anti-collision capsule and the combined work of the components when impacted, and prolongs the service life of the bridge pier structure. However, the structure of the anti-collision capsule itself is relatively complex, and the assembly, maintenance and repair are relatively cumbersome, which to a certain extent affects the application and promotion of the anti-collision capsule, resulting in the inability to achieve reliable protection of the bridge pier. Summary of the invention

[0006] In response to one or more of the above-mentioned defects or improvement needs in the prior art, the present invention provides a circular core anti-collision capsule, which can realize the impact protection of the pier structure, effectively control the force transmitted to the pier structure by the protection device during the impact, and can realize rapid recovery after the impact is eliminated, thereby simplifying the assembly, maintenance and inspection process of the protection device.

[0007] To achieve the above object, the present invention provides a toroidal core anti-collision capsule, comprising a shell with a hollow interior and an opening at the bottom, an anti-collision component disposed in the shell, and a center plug disposed at the opening of the shell;

[0008] The anti-collision component includes a buoyancy airbag and a recovery airbag respectively encapsulated with compressed gas; the buoyancy airbag is a spherical structure, which is supported on the recovery airbag and accommodated at the top of the inner cavity of the shell; the recovery airbag is a circular ring structure, which is embedded in the inner cavity of the shell, and its outer peripheral wall surface is pressed against the inner peripheral wall surface of the shell;

[0009] The center plug is arranged at the bottom opening of the shell, one end of which is embedded in the shell and the other end extends out of the bottom opening of the shell, so that the opening of the shell can be gathered and wrapped around the outer periphery of the center plug; accordingly, a closing assembly is arranged at the outer periphery of the open end of the shell, which is used to tighten the open end of the shell to the outer periphery of the center plug, so as to achieve the closure of the bottom of the shell; and

[0010] A pressure regulating valve and a one-way valve are provided in the center plug, and the two valve bodies are connected to the inner and outer sides of the shell respectively; the pressure regulating valve is used to adjust the maximum pressure in the shell, so that when the pressure in the shell exceeds the maximum pressure, the water in the shell can be sprayed out through the pressure regulating valve; the one-way valve is used to suck the water outside the shell into the shell when the pressure in the shell is lower than the pressure outside the shell.

[0011] As a further improvement of the present invention, the recovery airbag is a plurality of airbags arranged in sequence in the axial direction of the shell, each recovery airbag is independently arranged and bonded to the cylinder with its inner circumferential wall surface; the cylinder is made of rubber and is coaxially arranged in the middle of the recovery airbag.

[0012] As a further improvement of the present invention, the shell is a three-section structure, which includes a first shell arranged at the closed end and in a hemispherical shape, a third shell arranged at the open end and in a frustum shape, and a second shell arranged between the first shell and the third shell and in a cylindrical shape.

[0013] As a further improvement of the present invention, the outer diameter of the buoyancy airbag is equal to the inner diameter of the first shell, and the top periphery of the buoyancy airbag abuts against the inner peripheral wall of the first shell.

[0014] As a further improvement of the present invention, the center plug is made of rubber, and has plate bodies at both axial ends, and a neck with an outer diameter smaller than the outer diameter of the two plate bodies is provided between the two plate bodies, so that the inner circumferential wall surface of the end of the shell is sealed and attached to the outer periphery of the neck.

[0015] As a further improvement of the present invention, the shell is a multi-layer structure, which includes a rubber layer, a cord layer and a leak-proof layer arranged in sequence from the outside to the inside.

[0016] As a further improvement of the present invention, the closing component is a double steel wire throat clamp.

[0017] As a further improvement of the present invention, the buoyancy airbag and / or the recovery airbag is provided with an inflation nozzle for inflating air into the inner cavity of the corresponding airbag.

[0018] As a further improvement of the present invention, an openable and closable exhaust nozzle is provided on the shell, and the exhaust nozzle can be closed from the outside of the shell.

[0019] As a further improvement of the present invention, water is encapsulated at the bottom of the shell, so that the anti-collision component floats on the water surface and the buoyancy airbag is pressed tightly against the top of the inner cavity of the shell.

[0020] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0021] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

[0022] (1) The toroidal core anti-collision capsule of the present invention effectively blocks the impact on the protected object through the corresponding arrangement of the shell, the anti-collision component, the center plug and other structures, and cooperates with the combined operation of the one-way valve and the pressure regulating valve in the center plug. The compression deformation of the shell and the anti-collision component effectively absorbs and releases the impact force during the collision, thereby controlling the impact force acting on the protected structure, fully realizing the impact protection of structures such as bridge piers, and improving the service life of the structure.

[0023] (2) The circular core anti-collision capsule of the present invention can accurately control the impact force acting on the protected structure during the collision through the corresponding setting of the pressure regulating valve, ensuring that the impact force does not exceed the bearing capacity of the protected object, thereby improving the protection effect of the protection device; at the same time, according to the different structures and protection parameters of the protected object, pressure regulating valves of different specifications can be selected, which effectively improves the flexibility of setting and using the anti-collision capsule and meets the application in different application environments;

[0024] (3) The circular core anti-collision capsule of the present invention is provided with a corresponding one-way valve, so that after the collision is eliminated, the anti-collision capsule can realize rapid recovery under the action of the pressure difference between the inside and outside of the shell and the restoring force after the compression of the core tube, and the water discharged during the pressure relief is quickly sucked into the shell through the one-way valve, thereby realizing rapid recovery of the shell after the collision, so that the anti-collision capsule has automatic recovery ability, effectively simplifies the inspection and maintenance process of the anti-collision capsule, and reduces the application cost and maintenance cost of the protective device;

[0025] (4) The circular core anti-collision capsule of the present invention can realize the connection between the internal and external environments of the shell after the anti-collision capsule is assembled by arranging an openable and closable exhaust nozzle on the shell, thereby realizing the discharge of gas in the shell when water is injected into the shell, thereby improving the convenience of setting the anti-collision capsule and simplifying the setting process of the anti-collision capsule. The feature that the exhaust nozzle can be closed from the outside of the shell also ensures the stability and reliability of the anti-collision capsule during use;

[0026] (5) The circular ring core anti-collision capsule of the present invention has a simple structure and is easy to set up and maintain. It can effectively protect against collisions of structures such as bridge piers, fully absorb and release the impact force generated by the collision, and effectively control the force transmitted to the bridge pier by the anti-collision capsule during the collision, ensuring that the impact force does not exceed the bearing capacity of the protected object. At the same time, after the collision is removed, the anti-collision capsule can be quickly restored under the action of the anti-collision component, and the capsule can be quickly restored to its state before the collision, which effectively simplifies the inspection and maintenance process of the anti-collision capsule and has good application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural cross-sectional view of a toroidal core anti-collision capsule in an embodiment of the present invention;

[0028] Figure 2 It is an enlarged view of the local structure of the toroidal core anti-collision capsule in the embodiment of the present invention;

[0029] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0030] 1. Shell; 2. Buoyancy airbag; 3. Center plug; 4. Closing assembly; 5. Pressure regulating valve; 6. Check valve; 7. Recovery airbag; 8. Cylinder;

[0031] 101, first shell; 102, second shell; 103, third shell; 104, exhaust nozzle;

[0032] 301. First plate body; 302. Second plate body; 303. Neck. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] Example:

[0039] See also Figure 1 The annular core anti-collision capsule in the preferred embodiment of the present invention includes a "capsule-shaped" shell 1, a cavity structure is formed inside the shell 1, and an anti-collision component composed of a buoyancy airbag 2, a recovery airbag 7 and a cylinder 8 is arranged in the cavity structure, so that when the anti-collision capsule is hit, the elastic deformation of the shell 1 and the anti-collision component can be used to absorb and release the impact force, and then the state of the entire anti-collision capsule can be restored.

[0040] Specifically, in a preferred embodiment, the housing 1 is preferably designed in a "three-section" manner, including a first housing 101 at the top, a second housing 102 at the middle, and a third housing 103 at the bottom. In actual operation, the first housing 101 is protruding above the water surface, and the third housing 103 is partially or completely immersed in the water. At the same time, in the preferred embodiment, the first housing 101 is hemispherical, and the second housing 102 is cylindrical with openings at both ends, that is, the top of the second housing 102 is sealed by the first housing 101; accordingly, the third housing 103 is an irregular structure or a frustum-shaped structure as a whole due to the bottom closing.

[0041] It can be understood that in actual settings, the first shell 101, the second shell 102, and the third shell 103 are integrally formed to ensure the integrity and sealing of the shell. At the same time, the shell 1 in the preferred embodiment is a multi-layer structure in the thickness direction, which includes a rubber layer, a cord layer, and a leak-proof layer arranged in sequence from the outside to the inside. Compared with the capsule body prepared with a single rubber layer, the strength of the shell 1 can be fully enhanced by the provision of the cord layer, and the sealing of the inside and outside of the shell 1 can be effectively improved by the provision of the leak-proof layer. Preferably, an openable and closable exhaust nozzle 104 is provided at the top of the first shell 101, and the exhaust nozzle 104 can be closed from the outside of the shell 1, and when opened, the internal and external spaces of the shell 1 are connected for drainage and exhaust.

[0042] like Figure 1 As shown in the figure, the shell 1 in the preferred embodiment encapsulates an anti-collision component, which includes a spherical buoyancy airbag 2, a ring-shaped recovery airbag 7 and a cylindrical cylinder 8, and the above components are made of rubber, more preferably butyl rubber. Among them, the buoyancy airbag 2 is a spherical structure with a hollow interior, and compressed air is encapsulated inside. At the same time, the recovery airbag 7 in the preferred embodiment is an annular air ring structure, and compressed gas is encapsulated inside.

[0043] It is understood that when the buoyancy airbag 2 and the recovery airbag 7 are actually provided, corresponding air nozzles can be provided on the structures of the two, and the inflation and deflation operations of the corresponding airbags can be realized through the air nozzles. At the same time, it should also be ensured that the air nozzles of each airbag are always in a closed state when working, so as to ensure that each airbag can realize cyclic operation.

[0044] Furthermore, the sizes of the buoyancy airbag 2 and the recovery airbag 7 are set to correspond to the size of the shell 1. In a preferred embodiment, the outer diameter of the buoyancy airbag 2 is preferably equal to the inner diameter of the first shell 101, so that when the buoyancy airbag 2 is located at the top of the shell 1, its outer peripheral wall surface can fully abut the inner peripheral wall surface of the first shell 101. At the same time, the outer diameter of the recovery airbag 7 is preferably equal to the inner diameter of the second shell 102 (first shell 101), so that when the recovery airbag 7 is coaxially embedded in the shell 1, the outer peripheral wall surface of the recovery airbag 7 can be closely attached to the inner peripheral wall surface of the shell 1, and the second shell 102 can be propped up into a cylindrical structure.

[0045] In actual settings, the number of recovery airbags 7 below the buoyancy airbag 2 is a plurality of airbags that are arranged at intervals, and the number of recovery airbags 7 can be optimized based on the anti-collision requirements of the anti-collision capsule and the length of the second shell 102, so that the outer peripheral wall of the recovery airbag 7 always abuts against the inner peripheral wall of the second shell 102.

[0046] In addition, in order to ensure the stability of the setting of each recovery airbag 7, a cylinder 8 is coaxially arranged in the middle of each recovery airbag 7, which is preferably a thin-walled cylindrical structure made of rubber material (butyl rubber or natural rubber), so that the inner circumferential wall surface of each recovery airbag 7 is respectively connected to the outer circumferential wall surface of the cylinder 8, thereby achieving the fixation of each recovery airbag 7. Preferably, the connection between the recovery airbag 7 and the cylinder 8 is preferably bonding, and at the same time, the two adjacent recovery airbags 7 are preferably independent of each other, that is, they are not adhered to each other.

[0047] Furthermore, in the preferred embodiment, a center plug 3 is provided corresponding to the third shell 103, which is used to achieve the tightening and closing of the bottom opening of the shell 1. Specifically, the center plug 3 in the preferred embodiment is made of rubber, and its longitudinal cross-section presents an "I-shaped" structure, including a first plate body 301 and a second plate body 302 which are parallel to each other, and a neck 303 with an outer diameter smaller than the outer diameter of the two plates is coaxially provided between the two plates. Then, the center plug 3 can extend its first plate body 301 and neck body 303 into the open end of the third shell 103, and the inner wall of the opening of the third shell 103 can be tightened and tightly attached to the outer periphery of the neck 303, and the end of the third shell 103 abuts against the end face of the second plate body 302 facing the first plate body 301, as shown in FIG. Figure 2 as shown in .

[0048] Correspondingly, a closing assembly 4 is provided at the outer periphery of the end of the third shell 103, for reliably tightening the third shell 103 to the outer periphery of the neck 303. In a preferred embodiment, the closing assembly 4 is a double steel wire throat clamp, which can be a plurality of axially spaced apart to ensure that the third shell 103 can be tightly sealed to the outer periphery of the neck 303, thereby achieving sealing of the bottom of the shell 1.

[0049] Furthermore, in the preferred embodiment, a pressure regulating valve 5 and a one-way valve 6 are arranged inside the center plug 3, and the two valve bodies are connected to the two axial sides of the center plug 3, that is, they are connected to the inner and outer sides of the housing 1. At the same time, the one-way valve 6 is arranged in such a way that the water outside the housing 1 can be sucked into the housing 1 through the one-way valve 6, while the water inside the housing 1 cannot be discharged through the one-way valve 6. Accordingly, the function of the pressure regulating valve 5 is to control the maximum pressure of the inner cavity of the housing 1. When the pressure inside the housing 1 reaches the maximum pressure, the pressure regulating valve 5 is opened, so that the water inside the housing 1 can be discharged from the pressure regulating valve 5.

[0050] In actual setting, it is preferred to set the multi-core anti-collision capsules in a single or multiple combination form around the periphery of the protected object, for example, multiple anti-collision capsules are arranged in a surrounding form around the periphery of the bridge pier. When setting, a certain amount of water is first filled into the shell 1 of each anti-collision capsule so that the anti-collision component floats on the water surface, and the buoyancy airbag 2 is pressed against the inner wall surface of the first shell 101, that is, the anti-collision component is ensured to be on the upper part of the shell 1.

[0051] When the anti-collision capsule is deformed by impact (shell 1 is deformed, anti-collision components are squeezed and deformed), the pressure inside shell 1 rises and exceeds the maximum pressure of pressure regulating valve 5, so that the water inside shell 1 is ejected from the center plug 3 at the bottom of shell 1 through pressure regulating valve 5, thereby releasing the impact force borne by the capsule and reducing the internal pressure of the capsule. The impact force transmitted by the capsule to the bridge pier is often the product of the internal pressure of the capsule and the contact area between the capsule and the bridge pier. By reducing the internal pressure of the capsule, the impact force transmitted to the bridge pier during impact can be reduced accordingly, that is, by setting the pressure regulating valve 5, the maximum impact force transmitted by the capsule to the bridge pier is limited.

[0052] After the impact is removed, the deformed buoyancy airbag 2 and the recovery airbag 7 gradually recover their original shape under the action of the compressed gas therein, and then prop up the shell 1 and restore the shape of the shell 1. At the same time, in the process of the shell 1 recovering its shape, since the shell 1 can be regarded as switching from a "compressed" state to an "expanded" state, there is a pressure difference between the inside and outside of the shell 1, that is, the pressure outside the shell 1 is greater than the pressure inside the shell 1. At this time, the one-way valve 6 on the center plug 3 begins to suck the water outside the shell 1 into the shell 1 until the inside of the shell 1 returns to its initial state.

[0053] Obviously, the above-mentioned anti-collision capsule can be used repeatedly after being set up, and each anti-collision capsule has the characteristic of automatic recovery, which fully avoids the frequent inspection and maintenance of the anti-collision capsule. According to actual application, it is found that for the anti-collision capsule in the preferred embodiment, it is only necessary to regularly check whether the gas in the buoyancy airbag 2 and each recovery airbag 7 is sufficient, and perform the corresponding inflation process, which greatly simplifies the inspection and maintenance process of the anti-collision device.

[0054] The annular core anti-collision capsule in the present invention has a simple structure and is easy to set up and maintain. It can effectively realize the impact protection of structures such as bridge piers, fully absorb and release the impact force generated by the collision, and effectively control the force transmitted to the bridge pier by the anti-collision capsule during the collision, ensuring that the impact force does not exceed the bearing capacity of the protected object. At the same time, after the collision is removed, the anti-collision capsule can be quickly restored under the action of the anti-collision component, and the capsule can be quickly restored to the state before the collision, which effectively simplifies the inspection and maintenance process of the anti-collision capsule, and has good application prospects and promotion value.

[0055] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A toroidal core anti-collision capsule, comprising a shell with a hollow interior and an open bottom, characterized in that: Also included is an anti-impact assembly disposed within the housing and a center plug disposed at the housing opening; The anti-collision component includes a buoyancy airbag and a recovery airbag respectively encapsulated with compressed gas; the buoyancy airbag is a spherical structure, which is supported on the recovery airbag and accommodated at the top of the inner cavity of the shell; the recovery airbag is a circular ring structure, which is embedded in the inner cavity of the shell, and its outer peripheral wall surface is pressed against the inner peripheral wall surface of the shell, and the recovery airbag is a plurality of airbags arranged in sequence in the axial direction of the shell, each recovery airbag is independently arranged and bonded to the cylinder with its inner peripheral wall surface; the cylinder is made of rubber, and is coaxially arranged in the middle of the recovery airbag; and The bottom of the shell is encapsulated with water, so that the anti-collision component floats on the water surface and the buoyancy airbag is pressed tightly against the top of the inner cavity of the shell; the buoyancy airbag and / or the recovery airbag are provided with an inflation nozzle for inflating the inner cavity of the corresponding airbag; The center plug is arranged at the bottom opening of the shell, one end of which is embedded in the shell and the other end extends out of the bottom opening of the shell, so that the opening of the shell can be gathered and wrapped around the outer periphery of the center plug; accordingly, a closing assembly is arranged at the outer periphery of the open end of the shell, which is used to tighten the open end of the shell to the outer periphery of the center plug, so as to achieve the closure of the bottom of the shell; and A pressure regulating valve and a one-way valve are provided in the center plug, and the two valve bodies are connected to the inner and outer sides of the shell respectively; the pressure regulating valve is used to adjust the maximum pressure in the shell, so that when the pressure in the shell exceeds the maximum pressure, the water in the shell can be sprayed out through the pressure regulating valve; the one-way valve is used to suck the water outside the shell into the shell when the pressure in the shell is lower than the pressure outside the shell.

2. The toroidal core anti-collision capsule according to claim 1, wherein: The shell is a three-section structure, comprising a first shell disposed at the closed end and in a hemispherical shape, a third shell disposed at the open end and in a frustum shape, and a second shell disposed between the first shell and the third shell and in a cylindrical shape.

3. The toroidal core anti-collision capsule according to claim 2, wherein: The outer diameter of the buoyancy airbag is equal to the inner diameter of the first shell, and the outer periphery of the top of the buoyancy airbag abuts against the inner peripheral wall surface of the first shell.

4. The toroidal core anti-collision capsule according to any one of claims 1 to 3, wherein: The center plug is made of rubber, and has plates at both axial ends, and a neck with an outer diameter smaller than the outer diameter of the two plates is provided between the two plates, so that the inner peripheral wall surface of the end of the shell is sealed and attached to the outer periphery of the neck.

5. The toroidal core anti-collision capsule according to any one of claims 1 to 3, wherein: The shell is a multi-layer structure, which includes a rubber layer, a cord layer and a leakproof layer which are arranged in sequence from the outside to the inside.

6. The toroidal core anti-collision capsule according to any one of claims 1 to 3, wherein: The closing component is a double steel wire throat clamp.

7. The toroidal core anti-collision capsule according to any one of claims 1 to 3, wherein: The shell is provided with an openable and closable exhaust nozzle, and the exhaust nozzle can be closed from the outside of the shell.

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