CN-121990145-A - Emergency quick floating device

CN121990145ACN 121990145 ACN121990145 ACN 121990145ACN-121990145-A

Abstract

The application provides an emergency rapid floating device, and relates to the technical field of underwater unmanned aircrafts. A shell is arranged on the top or above the gravity center of the underwater unmanned aircraft, and a trigger mechanism, a chemical gas generator and a gas cylinder are sequentially connected in the shell. The triggering mechanism can sense the external water pressure and trigger the chemical gas generator independently of electric power when the water pressure exceeds a preset threshold value. The chemical gas generator rapidly generates a large amount of gas through chemical reaction, and the gas is immediately inflated into the air bag, so that the air bag is fixedly connected with the underwater unmanned aircraft through the rope in advance, and the underwater unmanned aircraft is provided with strong upward buoyancy. The underwater unmanned aircraft can be ensured to quickly and safely float out of the water under the emergency, the risk of losing the underwater unmanned aircraft is greatly reduced, and the survivability of the underwater unmanned aircraft in a complex underwater environment is improved.

Inventors

ZHANG WEI
FENG KAI
Qiao Jianyi
LUO QIANFEI
XIAO JING
BIAN YIPING
MA LIRAN
LI XIAOLEI
WU DEMIN

Assignees

超滑科技(佛山)有限责任公司
季华实验室

Dates

Publication Date: 20260508
Application Date: 20260401

Claims (10)

1. The emergency rapid floating device is applied to an underwater unmanned aircraft (700) and is characterized by comprising a shell (100), wherein the shell (100) is arranged at the top or above the gravity center of the underwater unmanned aircraft (700); The shell (100) is provided with a triggering mechanism (200), a chemical gas generator (300) and a gas cylinder (400) which are connected in sequence; the triggering mechanism (200) is used for sensing external water pressure and triggering the chemical gas generator (300) when the water pressure exceeds a preset threshold value; A chemical gasifier (300) for generating gas by chemical reaction upon triggering; The air bag (400) is fixedly connected with the underwater unmanned aerial vehicle (700) through a rope in advance and is used for being inflated under the action force of gas generated by the chemical gas generator (300) to provide upward buoyancy for the underwater unmanned aerial vehicle (700).
2. The emergency quick ascent device according to claim 1, characterized in that the triggering mechanism (200) comprises a bellows (201), a breaking pin (202), a pre-compression spring (203) and a striker pin (204); The corrugated pipe (201) is used for generating displacement along with the change of external water pressure; The pre-pressing spring (203) is arranged on the firing pin (204) in a penetrating mode, one end of the breaking pin (202) is inserted into the firing pin (204), the breaking pin (202) is used for being sheared and broken when the water pressure exceeds a preset threshold value, and the pre-pressing spring (203) is used for providing elastic force to push the firing pin (204) to collide with the chemical gas generator (300) after the breaking pin (202) is sheared and broken.
3. The emergency quick floating device according to claim 2, wherein the housing (100) is provided with a through hole, one end of the through hole is connected with the pressure-resistant corrugated pipe (201), the other end of the through hole is connected with the chemical gas generator (300), the firing pin (204) is arranged in the through hole, the first protruding part (205) is arranged in the through hole, the second protruding part (206) is arranged on the firing pin (204), and the pre-compression spring (203) is arranged between the first protruding part (205) and the second protruding part (206).
4. The emergency quick ascent apparatus according to claim 2, characterized in that the chemical gas generator (300) comprises a pilot port (301) and a fuel chamber (302) connected in sequence; a solid ignition agent is arranged in the ignition port (301) and is used for burning when being impacted by the firing pin (204); the fuel chamber (302) is provided with a solid fuel for being ignited to undergo a chemical reaction to produce a gas upon combustion of a solid ignition agent.
5. The emergency quick ascent apparatus of claim 4, wherein the solid fuel is sodium azide.
6. The emergency quick ascent apparatus according to claim 4, wherein the chemical gas generator (300) is connected to the air bag (400) through a first conduit (303), and the first conduit (303) is used for introducing the gas in the fuel chamber (302) into the air bag (400).
7. The emergency quick floating device according to claim 6, wherein the housing (100) is further provided with a cover plate (500) above the airbag (400), the cover plate (500) is clamped on the housing (100) through a connecting piece, the housing (100) further comprises a cover breaking mechanism (600), and the cover breaking mechanism (600) is used for cutting off the connecting piece of the cover plate (500) under the driving of gas so as to open the cover plate (500).
8. The emergency quick ascent apparatus of claim 7, wherein the cap breaking mechanism (600) is connected to the fuel chamber (302) by a second conduit (304), the second conduit (304) being configured to introduce gas from the fuel chamber (302) into the cap breaking mechanism (600).
9. The emergency quick ascent apparatus of claim 8, wherein the cap breaking mechanism (600) comprises a piston, an end of the piston being provided with a shearing structure, the piston being adapted to shear the connector when driven by the gas.
10. The emergency quick ascent device of claim 1, wherein the cable is a kevlar rope.

Description

Emergency quick floating device Technical Field The application relates to the technical field of underwater unmanned aircrafts, in particular to an emergency rapid floating device. Background Currently, when an Underwater Unmanned Vehicle (UUV) executes an underwater task, an emergency floating scheme is mainly realized by controlling a throwing load or blowing a ballast water tank through an electromagnetic valve according to a main control system instruction. However, there are significant limitations to such power-dependent emergency floating systems. When the underwater unmanned aircraft encounters faults such as full ship outage, dead halt of a main control computer, line short circuit or serious water leakage, all the systems depending on electric power are invalid, so that the underwater unmanned aircraft cannot execute emergency floating operation, and the risk of losing the system is encountered. Although there are mechanical ballast slingers in the prior art which are intended to provide an emergency floating means independent of electrical power, such devices are relatively single in function and generally provide only limited buoyancy, resulting in a slower floating speed of the underwater unmanned vehicle. Under complex and changeable sea conditions, the reliability of the mechanical ballast throwing device is difficult to be fully ensured, and the mechanical ballast throwing device possibly fails due to mechanical faults or external environmental influences, so that the safety risk of the underwater unmanned aircraft under emergency conditions is further increased. Therefore, there is a need in the art for a device that can quickly and reliably realize emergency floating when an underwater unmanned vehicle fails seriously, particularly when the power system fails completely, so as to effectively avoid the loss of the underwater unmanned vehicle. In view of the above problems, no effective technical solution is currently available. Disclosure of Invention The application aims to provide an emergency rapid floating device, which aims to solve the technical problem that an underwater unmanned aircraft cannot rapidly and reliably realize emergency floating when encountering serious faults such as power system failure and the like, so that the underwater unmanned aircraft is at risk of losing. In a first aspect, the application provides an emergency rapid floating device applied to an underwater unmanned vehicle, comprising a shell, a floating device and a floating device, wherein the shell is arranged on the top or above the gravity center of the underwater unmanned vehicle; The shell is provided with a triggering mechanism, a chemical gas generator and a gas cylinder which are connected in sequence; the triggering mechanism is used for sensing external water pressure and triggering the chemical gas generator when the water pressure exceeds a preset threshold value; The chemical gas generator is used for generating gas through chemical reaction when triggered; The air bag is fixedly connected with the underwater unmanned aircraft through a rope in advance and is used for being inflated under the action force of gas generated by the chemical gas generator to provide upward buoyancy for the underwater unmanned aircraft. According to the technical scheme, the emergency rapid floating device which does not depend on electric power and generates the gas inflation air bag through the chemical reaction triggered by water pressure to provide buoyancy is provided, the problem that an underwater unmanned aircraft cannot float under the extreme conditions of power system failure and the like is effectively solved, and the emergency floating capacity and safety of the underwater unmanned aircraft are remarkably improved. Optionally, the triggering mechanism comprises a corrugated pipe, a breaking pin, a pre-pressing spring and a striking pin; The corrugated pipe is used for generating displacement along with the change of external water pressure; the pre-pressing spring is arranged on the firing pin in a penetrating mode, one end of the breaking pin is inserted into the firing pin, the breaking pin is used for being sheared and broken when the water pressure exceeds a preset threshold value, and the pre-pressing spring is used for providing elastic force to push the firing pin to collide with the chemical gas generator after the breaking pin is sheared and broken. According to the technical scheme, the displacement of the corrugated pipe is utilized to drive the fracture pin to shear and fracture, and then the pre-compression spring is released to push the firing pin, so that a mechanical hydraulic triggering mechanism is formed, the accurate response of the hydraulic pressure change under the electroless state is ensured, and the reliability and the response speed of the triggering mechanism are improved. Optionally, the shell is provided with a through hole, one end of the through hole is connected with th