CN-122009437-A - Relay type self-inflating salvaging device and using method

CN122009437ACN 122009437 ACN122009437 ACN 122009437ACN-122009437-A

Abstract

The invention relates to a relay type self-inflating salvage device and a use method thereof, which relate to the technical field of deep sea salvage, the device comprises a plurality of salvage main body units, auxiliary connection units, relay traction cables and salvage objects, each unit is connected in series through the cables, a bottom unit is connected with the objects, other units float freely, each unit air bag is sequentially started to be inflated through underwater acoustic communication, positive buoyancy is generated to gradually lift the target object to the water surface, the limitation of the traditional salvaging device under the ultra-large depth is overcome, and the salvaging device has the advantages of being free of limitation in depth, free of cabling, convenient to operate and the like and is suitable for salvaging operation of the target object in the deep sea.

Inventors

WU XIAN
GUO ZHIHAO
GUO YANGYANG
HE KAI
YANG GUANGHUI

Assignees

中国船舶科学研究中心

Dates

Publication Date: 20260512
Application Date: 20260226

Claims (10)

1. The relay type automatic inflation salvage device is characterized by comprising a plurality of salvage device bodies (1) and a relay traction cable (3), wherein the relay traction cable (3) is used for connecting the plurality of salvage device bodies (1) in series at intervals, and the bottommost part of the relay traction cable (3) is connected with a salvage target object (4); The structure of the single salvaging device main body (1) comprises a frame structure (106), wherein a gas generator (101), a cooling coil pipe (102) and an underwater sound communication ignition module (105) are arranged in the frame structure (106), an air bag (103) communicated with the cooling coil pipe (102) is arranged at the top of the frame structure (106), a rigging (107) is arranged on the outer ring of the frame structure (106), the underwater sound communication ignition module (105) is used for remotely starting the gas generator (101), and generated high-pressure gas enters the air bag (103) after being cooled by the cooling coil pipe (102) so that the salvaging device main body (1) generates positive buoyancy; the fishing device further comprises an auxiliary connecting device (2) which is arranged between the fishing device main body (1) at the bottommost part and the fishing target object (4) and is used for realizing quick connection.
2. The relay type automatic inflation salvage device as claimed in claim 1, wherein the air bag (103) is provided with an adaptive pressure equalizing valve (104), and the adaptive pressure equalizing valve (104) is used for automatically adjusting the pressure difference between the inside and the outside of the air bag (103) at different depths under water.
3. A relay type self-inflating fishing device as claimed in claim 1, wherein the frame structure (106) is a cylindrical structure.
4. The relay type self-inflating salvage device as claimed in claim 1, wherein the rigging (107) is of a split type structure, and the rigging (107) is made of buoyancy materials.
5. The relay type automatic inflation salvage device according to claim 1, wherein the auxiliary connection device (2) is characterized by comprising a mushroom head male head (201), a mushroom head female head (202), a traction rope (203), a movable pulley (204) and a lifting appliance (205), wherein the mushroom head male head (201) is connected with a salvage device main body (1) at the bottommost part, and the mushroom head female head (202) is connected with a salvage target object (4) through the lifting appliance (205); The movable pulley (204) is driven by the traction rope (203), so that the mushroom head male head (201) and the mushroom head female head (202) are automatically locked and matched, and quick connection is realized.
6. The relay type automatic inflation fishing device as claimed in claim 5, wherein the bottom of the mushroom head male head (201) adopts a spherical structure.
7. The relay type self-inflating salvage device as set forth in claim 1, wherein the gas generator (101) is replaced by a hydrazine decomposition gas generating device, an outlet of the hydrazine decomposition gas generating device is communicated with an inlet of the cooling coil (102), and an outlet of the cooling coil (102) is communicated with an air inlet of the air bag (103).
8. The relay type automatic inflation fishing device as claimed in claim 1, wherein the underwater acoustic communication ignition module (105) independently receives a water surface control signal and respectively controls the gas generators (101) of the fishing device bodies (1) to be started in a preset sequence.
9. A relay type autonomous inflatable fishing device according to claim 1, wherein the length of the relay traction cable (3) is determined according to the limit working depth of the fishing device body (1) and the fishing target depth, so that the distance between adjacent fishing device bodies (1) is equal to or smaller than the limit working depth of the single fishing device body (1).
10. The method for using the relay type self-inflating salvage device according to claim 1, which is characterized by comprising the following operation procedures: Determining the number of units of the serially connected fishing device main bodies (1) according to the fishing target depth and the limit working depth of the single fishing device main body (1), and serially connecting a plurality of fishing device main bodies (1) through relay traction cables (3); The second step, the auxiliary connection unit is connected with the salvage object (4) by means of ROV, so that the bottom salvage device main body (1) is fixedly connected with the salvage object (4), and the rest salvage device main bodies (1) freely float in water to different depths by means of micro positive buoyancy; Starting the topmost salvage device main body (1) through underwater acoustic communication, and enabling a gas generator (101) to generate gas to inflate the gas bag (103) so that the unit generates positive buoyancy which is not less than the sum of the self underwater weight of the salvage target object (4) and the off-bottom adsorption force, and towing the whole salvage device and the salvage target object (4) to float upwards together; Fourthly, after the topmost salvage device main body (1) floats to the water surface, starting the next salvage device main body (1) through underwater acoustic communication, so that an air bag (103) of the next salvage device main body is inflated to generate positive buoyancy, and continuously dragging a salvage target object (4) to float; fifth, repeating the fourth step, and starting each subsequent salvaging device main body (1) in sequence until the bottom salvaging device main body (1) floats to the water surface, and lifting the salvaging target object (4) to the near water surface; And sixthly, the salvaging device and the salvaging target object (4) are recovered together on the water surface or the shore through the lifting device.

Description

Relay type self-inflating salvaging device and using method Technical Field The invention relates to the technical field of deep sea salvaging devices, in particular to a relay type self-inflating salvaging device and a using method thereof. Background In the prior art, publication number CN116238666B discloses an air bag inflatable salvaging device and a using method, and the invention provides the air bag inflatable salvaging device which inflates an air bag by utilizing a gas generator or a hydrazine decomposition gas generating device so as to achieve the expected positive buoyancy to lift a target object. The device has considerable cost-effectiveness ratio for salvaging a shallow object of 1000m, but does not take effect for salvaging an object with an ultra-large depth, because any gas generating system has to overcome huge environmental back pressure under the ultra-large depth, taking salvaging with a depth of 3000m as an example, firstly, the outlet pressure of the gas generating device has to be obviously higher than 30MPa to inject the gas into the air bag and expand the gas, which has higher requirements on the pressure resistance and the gas characteristics of the gas generating device, secondly, the main component of the gas generated by the gas generator is CO2, the CO2 is in a liquid state under the seawater pressure of 30MPa, the capability of filling the air bag to expand the gas is not provided, and the main product after the hydrazine is decomposed is NH3 or N2. At a sea water pressure of 30MPa, NH3 is in a liquid state and does not have the capability of filling the air bags to expand, the density of N2 is close to one fourth of the density of sea water, and the cost-effectiveness ratio is not considerable. It can be seen that the salvaging mode of utilizing the gas generator or hydrazine to decompose the produced gas to provide buoyancy is not suitable for the salvaging requirement under the ultra-large depth. Disclosure of Invention The inventor provides a relay type automatic inflation salvage device and a use method thereof aiming at the defects in the prior art, so that a plurality of salvage device bodies are connected in series according to a certain interval through a relay traction cable with a certain length, in the salvage process, the salvage device bodies with slight positive buoyancy are respectively and freely floated in different depths under water in a sugar-gourd shape, a gas generator of the uppermost salvage device body is started through an underwater acoustic communication ignition module to enable an air bag to inflate and expand to generate positive buoyancy so as to lift a target object, and after the uppermost salvage device body floats to the water surface, the next salvage device body is started, and relay type salvage is repeatedly formed, so that the target object is finally lifted to the near water surface. The salvaging depth of the relay salvaging device is not limited by the single limit working depth of the salvaging main body, and the salvaging of the target object at any depth can be realized theoretically. The technical scheme adopted by the invention is as follows: the relay type autonomous inflatable salvage device comprises a plurality of salvage device bodies and a relay traction cable, wherein the relay traction cable is used for connecting the plurality of salvage device bodies in series at intervals, and the bottommost part of the relay traction cable is connected with a salvage target object; the structure of the single salvage device main body comprises a frame structure, wherein a gas generator, a cooling coil pipe and an underwater acoustic communication ignition module are arranged in the frame structure, an air bag communicated with the cooling coil pipe is arranged at the top of the frame structure, and a rigging is arranged on the outer ring of the frame structure; The device also comprises an auxiliary connecting device which is arranged between the fishing device main body at the bottommost part and the fishing target object and is used for realizing quick connection. The further technical scheme is as follows: the self-adaptive pressure equalizing valve is arranged on the air bag and is used for automatically adjusting the pressure difference between the inside and the outside of the air bag at different depths under water. The frame structure is a cylindrical structure. The rigging adopts a split type structure, and is made of buoyancy materials. The auxiliary connecting device has the structure that the auxiliary connecting device comprises a mushroom head male head, a mushroom head female head, a traction rope, a movable pulley and a lifting appliance, wherein the mushroom head male head is connected with a fishing device main body at the bottommost part, and the mushroom head female head is connected with a fishing target object through the lifting appliance; the movable pulley is driven by the traction rope, so that the mushr