A storage tank inner wall and floating disc totally enclosed apparatus includes a tank body, floating disc, pressure relief balance structure and a flexible sealing body structure, wherein the floating disc is arranged in the tank body, the edge of the floating disc is provided with an outer frame, the outer frame is provided with a plurality of sealing structures, the top of the inner wall of the tank body is provided with an annular support, one end of the flexible sealing body structure is fixedly connected with the annular support, the other end of the flexible sealing body structure is fixedly connected with the outer frame, one end of the pressure relief balance structure is sequentially and fixedly connected with the flexible sealing body structure and the annular support, and the joint of the annular support is provided with a through hole.

A method for improving fire prevention performance of a vehicle-carried data recording device and a protection device thereof are provided, where the method includes: mounting the vehicle-carried data recording device in a water-proof shell in a sealing manner; mounting the water-proof shell in a mounting space enclosed by an upper constant-temperature water shell and a lower constant-temperature water shell; injecting a liquid into the upper constant-temperature water shell and the lower constant-temperature water shell; mounting a constant-temperature water shell composed of the upper constant-temperature water shell and the lower constant-temperature water shell in a fire-proof box; and packing the fire-proof box in a protective housing with heat dissipation holes to prevent a data recording device from being damaged when the vehicle is damaged by the action of an external force. The device is majorly encased by a water-proof shell, a constant-temperature water shell, a fire-proof box and a protective housing successively. The present disclosure has advantages of long fire resistance time and high data security.

A double-walled vessel (1) is disclosed, which has a pressure equalization opening (24). Said opening is closed by a stopper (4), which has at least one gas passage channel (41). Said channel is configured such that it allows air to pass, while it prevents the penetration of water into the intermediate space. The stopper is preferably made from a silicone-based plastic and fastened to the vessel by means of an adhesive based on acetoxy silicone. For fastening purposes, it may comprise a disk-like fastening flange (43).

Devices and methods for blast/fire containment are disclosed herein. Devices include containers designed to contain and/or mitigate high energy events such as blasts from explosions or thermal runaways. The containers include a body that is built to define an interior chamber shaped to receive an explosive device or a device susceptible to thermal runaway. The container comprises a plurality of substructures that are arranged in a layered sequence to provide the desired effect. The substructures act in concert to decouple the shock load to the main containment structure using shock decoupling with energy dissipation and attenuation technology, having a highly deformable polymer structure, and managed venting. In thermally dominated events, such as a runaway LI battery fire, a crushable medium present in one or more layers of the container presents a significant thermal barrier and contains the fire.

A liquid storage tank comprising an outer container wherein the outer container is rigid and has at least one inner container disposed within the outer container. The at least one inner container contains at least one stored liquid which may be refilled from a surface vessel or host facility. The at least one inner container is flexible and pressure balanced while the volume of the outer container remains fixed, and the volume of the at least one inner containers is variable. Disposed on the outer container is a balance assembly containing an isolation valve, a check valve, and a flexible bladder. The balance assembly allows for the hydrostatic pressure to be maintained during chemical dosing and tank raising operations.

A liquid storage tank comprising an outer container wherein the outer container is rigid and has at least one inner container disposed within the outer container. The at least one inner container contains at least one stored liquid which may be refilled from a surface vessel or host facility. The at least one inner container is flexible and pressure balanced while the volume of the outer container remains fixed, and the volume of the at least one inner containers is variable. Disposed on the outer container is a balance assembly containing an isolation valve, a check valve, and a flexible bladder. The balance assembly allows for the hydrostatic pressure to be maintained during chemical dosing and tank raising operations.

A leak preventing appliance and method for preventing liquid from leaking out of a damaged tank (2). The appliance comprises a suction head (4) to be pressed against an outer wall (5) of the tank under the effect of an underpressure generated by a vacuum pump(3). The suction head comprises a first chamber (6) and a second chamber (9) arranged around the first chamber. Each chamber has an opening (7, 10) intended to face said tank wall. The suction head is attachable to the tank wall under the effect of a reduced pressure produced in the second chamber by the vacuum pump. The first chamber is connectable to the vacuum pump via a valve device (8), which is configured to keep the first chamber connected to the vacuum pump when a reduced pressure produced in the second chamber by the vacuum pump is below a threshold value and to otherwise keep the first chamber disconnected from the vacuum pump.

A leak preventing appliance and method for preventing liquid from leaking out of a damaged tank (2). The appliance comprises a suction head (4) to be pressed against an outer wall (5) of the tank under the effect of an underpressure generated by a vacuum pump(3). The suction head comprises a first chamber (6) and a second chamber (9) arranged around the first chamber. Each chamber has an opening (7, 10) intended to face said tank wall. The suction head is attachable to the tank wall under the effect of a reduced pressure produced in the second chamber by the vacuum pump. The first chamber is connectable to the vacuum pump via a valve device (8), which is configured to keep the first chamber connected to the vacuum pump when a reduced pressure produced in the second chamber by the vacuum pump is below a threshold value and to otherwise keep the first chamber disconnected from the vacuum pump.

Using a subsea fluid storage system 1 comprising a soft bladder (20) disposed within a pressure balanced reservoir (10), a rotatable piston (30) disposed at least partially within the pressure balanced reservoir where a top of the soft bladder is in communication with the rotatable piston, and a piston rotator (50) operative to rotate and twist the rotatable piston as the rotatable piston travels along a predetermined axis within the pressure balanced reservoir, a predictable and repeatable collapse of the soft bladder may be obtained by allowing the rotating piston (30) to cooperatively travel about the piston rotator (50) to twist the soft bladder (20) as the rotating piston moves along the predetermined axis in such a manner as to collapse the bladder inward, thereby emptying the bladder of fluid within the bladder. The rotation of the piston pulls the soft bladder away from an interior of the pressure balanced reservoir, thereby preventing binding or pinching of the bladder with respect to the interior of the pressure balanced reservoir. In configurations, fluid is allowed to enter the pressure balanced reservoir via a valve (54) until a balance is achieved between an interior and an exterior of the pressure balanced reservoir.

Using a subsea fluid storage system 1 comprising a soft bladder (20) disposed within a pressure balanced reservoir (10), a rotatable piston (30) disposed at least partially within the pressure balanced reservoir where a top of the soft bladder is in communication with the rotatable piston, and a piston rotator (50) operative to rotate and twist the rotatable piston as the rotatable piston travels along a predetermined axis within the pressure balanced reservoir, a predictable and repeatable collapse of the soft bladder may be obtained by allowing the rotating piston (30) to cooperatively travel about the piston rotator (50) to twist the soft bladder (20) as the rotating piston moves along the predetermined axis in such a manner as to collapse the bladder inward, thereby emptying the bladder of fluid within the bladder. The rotation of the piston pulls the soft bladder away from an interior of the pressure balanced reservoir, thereby preventing binding or pinching of the bladder with respect to the interior of the pressure balanced reservoir. In configurations, fluid is allowed to enter the pressure balanced reservoir via a valve (54) until a balance is achieved between an interior and an exterior of the pressure balanced reservoir.