CN113385791B - Underwater emergency rescue system and underwater rescue method based on the rescue system - Google Patents

Abstract

The invention provides an underwater emergency rescue system and an underwater rescue method based on the same, relates to the technical field related to underwater rescue equipment, and aims to solve the problems that the conventional sunken ship chain type salvaging method in the prior art needs larger rescue equipment and is slow in rescue speed. The system comprises a hoisting device and an underwater welding device, wherein the underwater welding device is used for welding a stud on the sunken ship, a hoisting ring is arranged on the welded stud, the hoisting device is arranged on a working ship or a sea shore, and a cable is connected with the hoisting device so as to hoist the sunken ship through the hoisting device. The underwater stud welding is adopted, and the forced tongs are quickly welded on the object to be salvaged, so that the underwater emergency rescue is conveniently and quickly lifted, and the underwater emergency rescue is quickly realized.

Description

Underwater emergency rescue system and underwater rescue method based on the rescue system

technical field

The present invention relates to the technical field related to underwater rescue equipment, in particular to an underwater emergency rescue system and an underwater rescue method based on the rescue system.

Background technique

In emergencies such as a pilot falling into a lake, a diver missing, a bus falling into a river, and a shipwreck, it is necessary to salvage the sunken objects as soon as possible to reduce casualties and property losses. However, at present, the methods of underwater cable penetration and shore lifting are mostly used.

The traditional chain salvage method for wrecks needs to use directional drilling rigs to excavate trenches under the ship, then pass the cables through, and then connect the cables with a crane on the shore to salvage the sunken ships. This method takes a long time and the rescue speed is too slow. And the rescue equipment needed is relatively large, the transportation and operation are a bit cumbersome, and the response speed is slow, it is difficult to achieve the purpose of underwater emergency rescue, and it is not suitable for the current underwater emergency rescue strategy.

In response to the above-mentioned needs of underwater emergency rescue and rapid salvage of accidents, the underwater stud welding method is proposed for emergency rescue of underwater sunken ships. Underwater stud welding is used to quickly weld the gripper on the object to be salvaged. It is convenient for lifting as soon as possible, and provides a quick salvage method for underwater emergency rescue. This new underwater rescue technology or method can be used as an important supplement to underwater operation technology, and it is also a new breakthrough in technology.

Contents of the invention

In view of this, the object of the present invention is to provide an underwater emergency rescue system and an underwater rescue method based on the rescue system, so as to solve the traditional chain salvage method for shipwrecks in the prior art, which requires relatively large rescue equipment and difficult rescue operations. Slow technical issues.

In order to achieve the above object, the present invention provides an underwater emergency rescue system, including a lifting device and an underwater welding device, wherein: the underwater welding device is used for welding studs on a sunken ship, and the welded studs are installed There are hoisting rings, and the hoisting device is installed on the workboat or the shore, and the cable is connected to the hoisting device to hoist the sunken ship through the hoisting device.

Optionally, the underwater welding device includes a welding power supply, an underwater welding and cutting kit, a gas supply system and a welding cable, and the gas supply system is connected to the welding and cutting kit;

The welding cable includes a welding ground wire, a cable fixing clip for fixing on the sunken ship, and a connecting cable. The welding power supply is electrically connected to the cable fixing clip through the welding ground wire, and the welding power supply is connected through the connection An electrical cable is electrically connected to the underwater welding and cutting kit.

Optionally, the underwater welding and cutting kit is an underwater stud welding torch, and the outer surface of the connecting cable is provided with a buoyancy protection sheath.

Optionally, the underwater stud welding torch includes a welding torch main body, an air supply and drainage device and a movable ceramic ring device, the air supply and drainage device is connected to the welding torch main body and arranged at the front end of the welding torch main body, so Air holes that can be connected to the air supply system are formed on the air supply and drainage device, and the movable clamping ring device is arranged inside the air supply and drainage device and can move along the axial direction of the underwater stud welding torch.

Optionally, the air supply and drainage device includes a sleeve structure and a drainage cover, one end of the sleeve structure is connected to the drainage cover, and the end of the sleeve structure is far away from the drainage cover Connected with the main body of the welding torch, the sleeve structure is provided with the air hole, and the air hole communicates with the inner cavity formed by the sleeve structure, and the movable ceramic ring device is movably arranged on the Inside the sleeve structure.

Optionally, the sleeve structure includes a sealing sleeve and a telescopic sleeve, the sealing sleeve is connected to the main body of the welding torch, and the movable clamping ring device is movably arranged in the telescopic sleeve, the The telescopic sleeve is arranged on the periphery of the sealing sleeve, and a sleeve adjustment structure is arranged between the telescopic sleeve and the sealing sleeve, through which the telescopic sleeve can be positioned relative to the sealing sleeve. The cylinder moves horizontally along the axis of the underwater stud welding torch.

Optionally, the movable clamping ring device is connected to the sealing sleeve through threads.

Optionally, the adjustment structure includes a fixing part connected with the sealing sleeve, the fixing part is provided with a first tapered thread, and the telescopic sleeve is provided with a The second tapered thread.

A kind of underwater rescue method based on described underwater emergency rescue system, comprises the following steps:

Step S1, the lifting device is installed on the workboat or the coast;

Step S2, the diver dives down to find the sunken ship and the welding point, and welds studs on the sunken ship through the underwater welding device;

Step S3, installing a lifting ring on the welding stud, and passing the cable through the lifting ring;

Step S4, the hoisting device lifts the sunken ship through cables to complete the rescue.

Optionally, the welding method using the underwater welding device in the above step S2 includes the following steps:

Step S21, installing the stud on the underwater stud welding gun, and making the underwater stud welding gun close to the surface of the sunken ship;

Step S22, starting the underwater stud torch to drain water, using the mixed gas in the gas supply system to form a local dry environment and using the mixed gas for welding protection;

Step S23, during welding, firstly form a pilot current arc on the surface of the stud and the sunken ship, and remove the coating and vaporized water layer on the welding surface, and use dry mixed gas to blow off the moisture, so that a dry welding environment is formed locally;

Step S24, turning on the welding current to melt the surface of the stud and the sunken ship to form a molten pool;

Step S25, the stud to be welded is slowly inserted into the molten pool under the restoring force of the main spring of the underwater stud welding torch;

Step S26, continue to apply a brief current to heat the welded joint to form a recrystallized joint;

Step S27, lift the underwater stud welding torch, and fix the stud on the surface of the sunken ship.

The underwater emergency rescue system provided by the present invention includes a lifting device and an underwater welding device, wherein the underwater welding device is used for welding studs on a sunken ship, the studs are equipped with lifting rings, and the lifting device is installed on a workboat or on the coast , the cable is connected to the lifting device to lift the sunken ship by the lifting device. The underwater emergency rescue system has the characteristics of short welding time, no need for professional underwater welder operation, simplified fastening structure, etc., which greatly saves maintenance resources and funds and improves maintenance efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the first schematic diagram of the application of the underwater emergency rescue system provided by the embodiment of the present invention;

Fig. 2 is the second schematic diagram of the application of the underwater emergency rescue system provided by the embodiment of the present invention;

Fig. 3 is the third schematic diagram of the application of the underwater emergency rescue system provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the composition of the underwater sensing device provided by the embodiment of the present invention;

Fig. 5 is a schematic diagram of the internal structure of the underwater stud welding torch provided by the embodiment of the present invention;

Fig. 6 is the top view of the underwater stud welding torch provided by the embodiment of the present invention;

Fig. 7 is a schematic structural view of a mobile clamping ceramic ring device provided by an embodiment of the present invention;

Fig. 8 is a flowchart of an underwater rescue method provided by an embodiment of the present invention.

Reference signs: 1, lifting equipment; 2, working boat; 3, sunken ship; 4, cable; 5, welding power supply; 6, underwater stud welding torch; 61, welding torch main body; Through hole; 63, air hole; 64, sealing sleeve; 65, telescopic sleeve; 66, adjustment structure; 67, boss; 68, electromagnet; 69, main spring; 70, drainage cover; 7, air supply system ; 71. Gas cylinder; 72. Gas supply pipeline; 8. Cable clamp; 9. Connecting cable; 10. Welding ground wire.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner ", "outside", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

1 to 3, the present invention provides an underwater emergency rescue system, including a lifting device 1 and an underwater welding device, wherein the underwater welding device is used to weld studs on a sunken ship 3, and the welded studs The hoisting device 1 is installed on the workboat 2 or on the coast, and the cable 4 is connected with the hoisting device 1 to hoist the sunken ship 3 through the hoisting device 1 .

Specifically, as shown in Figure 4, the underwater welding device includes a welding power supply 5, an underwater welding and cutting kit, a gas supply system 7 and a welding cable, and the gas supply system 7 is connected to the welding and cutting kit; the welding cable includes a welding ground wire 10 1. The cable fixing clip 8 and connecting cable 9 used to be fixed on the sunken ship 3, the welding power supply 5 is electrically connected to the cable fixing clip 8 through the welding ground wire 10, and the welding power supply 5 is electrically connected to the underwater welding and cutting kit through the connecting cable 9.

Wherein, the gas supply system 7 includes a gas storage bottle 71 , a pressure reducer and a corresponding gas supply pipeline 72 . The outer surface of the connecting cable 9 is provided with a buoyancy protective cover to overcome the weight of the cable itself and achieve a balance effect in the water. When the diver dives to the sunken ship 3 position, the stud is welded to the pre-calculated stud with the underwater stud welding torch 6. Shipwreck 3 welded on.

According to actual needs, the underwater welding and cutting kit is an underwater stud welding torch 6 , an underwater welding handle or an underwater cutting handle; the underwater welding and cutting kit in this embodiment adopts the underwater stud welding torch 6 . Stud welding is a stud welding method in which the welding arc is used as the heat source, and it welds the stud to the workpiece, rather than arc welding with a covered electrode or other filler metal. Studs and similar fasteners themselves are both weldments and electrodes. The arc is ignited and burned between the end of the stud and the plate (metal plate, pipe), and the stud falls into the molten pool and pressurizes. Forming welded joints is a high-speed arc joining method. The welding power source 5 is an important part of the underwater welding device. It uses a microcomputer to control the inverter stud welding power source 5 to provide key parameters such as the welding power source 5 and welding control.

The underwater stud welding torch 6 is an important part of the underwater welding device and is a tool used by divers for underwater operations. Its performance will directly affect the quality of underwater stud welding and the safety of underwater operations. 5 and 6, the underwater stud welding torch 6 includes a welding torch main body 61, an air supply and drainage device and a movable clamping ring device 62, the air supply and drainage device is connected to the welding torch main body 61 and is arranged on the front end of the welding torch main body 61, for supplying An air hole 63 that can be connected to the air supply system 7 is formed on the air drainage device, and the movable clamping ring device 62 is arranged inside the air supply and drainage device and can move along the axial direction of the underwater stud welding torch 6 .

The air supply and drainage device includes a sleeve structure and a drainage cover 70. One end of the sleeve structure is connected to the drainage cover 70, and the end of the sleeve structure away from the drainage cover 70 is connected to the welding torch body 61. The sleeve structure is An air hole 63 is opened, and the air hole 63 communicates with the inner cavity formed by the sleeve structure, and the movable clamping ceramic ring device 62 is movably arranged inside the sleeve structure.

The sleeve structure includes a sealing sleeve 64 and a telescopic sleeve 65. The sealing sleeve 64 and the outer surface of the welding torch body 61 form a detachable connection through threads, and the movable ceramic ring device 62 is movably arranged in the telescopic sleeve 65. The telescopic sleeve 65 is arranged on the periphery of the sealing sleeve 64 and a sleeve adjustment structure 66 is arranged between the telescopic sleeve 65 and the sealing sleeve 64. Horizontal movement in the 6-axis direction of the underwater stud welding torch. Inject argon gas into the sealing sleeve 64 through the air hole 63 to achieve the function of drainage and protective welding; the right side of the sealing sleeve 64 is provided with a boss 67 for fixing the V-shaped sealing ring, and the drainage cover 70 and the V-shaped sealing ring can be used. The sealing effect of the sealing sleeve 64 is achieved.

As shown in Figure 7, the movable clamping ceramic ring device 62 in this embodiment is ring-shaped, and a through hole 621 is opened in the middle, and the stud can pass through the through hole to connect with the clamping structure of the welding torch main body 61, and the ceramic ring is secretly rotated in the mobile Between the clamping ceramic ring device 62 and the stud, the movable clamping ceramic ring device 62 is connected with the sealing sleeve 64 through threads, and the protruding length of the stud can be adjusted while the ceramic ring is fixed.

The adjustment structure 66 includes a fixed part connected with the sealing sleeve 64, the fixed part is provided with a first tapered thread, and the telescopic sleeve 65 is provided with a second tapered thread matched with the first tapered thread. The length of the sleeve structure can be adjusted through the cooperation of the first tapered thread and the second tapered thread, so as to weld studs of different lengths.

In addition, the present invention also provides an underwater rescue method based on the above-mentioned underwater emergency rescue system, which adopts underwater stud welding and quickly welds the grab handle on the object to be salvaged, which is convenient for lifting as soon as possible, and provides The quick salvage method, as shown in Figure 8, mainly includes the following steps:

Step S1, the lifting device 1 is installed on the workboat 2 or on the coast;

Step S2, the diver dives down to find the wreck 3 and the welding point, and welds studs on the wreck 3 through the underwater welding device;

Step S3, install the lifting ring on the welding stud, and pass the cable 4 through the lifting ring;

Step S4, the hoisting device 1 lifts the sunken ship 3 through the cables 4 to complete the rescue.

The basic principle of stud welding is that during welding, the stud is lifted to generate a large welding current between the metal stud and the surface of the sunken ship, and the end face of the stud and the surface of the sunken ship are instantly melted to form a molten pool, and then the stud is After immersing in the molten pool to cool, it is fixed on the surface of the sunken ship 3. Wherein, the welding method of the present application using the underwater welding device in the above step S2 for welding comprises the following steps:

Step S21, installing the stud on the underwater stud welding torch 6, and making the underwater stud welding torch 6 close to the surface of the sunken ship 3;

Step S22, start the underwater stud welding torch 6 to drain water, use the mixed gas in the gas supply system 7 (gas storage cylinder 71) to form a local dry environment and use the mixed gas for welding protection;

Considering that water has a great influence on stud welding operation and stud welding quality during underwater welding, so when designing underwater stud welding, air supply and drainage devices are used to protect it. It should be noted that this In the gas cylinder 71 of the device, a mixture of 80% argon and 20% carbon dioxide is used as the shielding gas for underwater stud welding;

Step S23, during welding, first form a pilot current arc on the surface of the stud and the sunken ship 3, and remove the coating and vaporized water layer on the welding surface, and use dry mixed gas to blow off the moisture, so that a dry welding environment is formed locally;

Step S24, using the electromagnet 68 to lift the stud to a certain height, turning on the welding current to melt the surface of the stud and the sunken ship 3 to form a molten pool;

Step S25, under the restoring force of the main spring 69 of the underwater stud welding torch 6, the stud is slowly inserted into the molten pool;

Step S26, continue to apply a brief current to heat the welded joint to form a recrystallized joint;

Step S27 , lifting the underwater stud welding torch 6 , and fixing the stud on the surface of the sunken ship 3 .

In underwater stud welding, in order to facilitate underwater welding and rapid repair, the welding studs used are generally made of materials with low carbon content.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present invention, and should cover all Within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (5)

1. The utility model provides an emergent rescue system under water which characterized in that, includes equipment of lifting by crane and underwater welding device, wherein:

the underwater welding device is used for welding a stud on the sunken ship, a hanging ring is arranged on the welded stud, the hoisting equipment is arranged on a working ship or a sea shore, and a cable is connected with the hoisting equipment so as to hoist the sunken ship through the hoisting equipment;

the underwater welding device comprises a welding power supply, an underwater welding and cutting kit, an air supply system and a welding cable, wherein the air supply system is connected with the welding and cutting kit;

the welding power supply is electrically connected with the cable fixing clamp through the welding ground wire, and the welding power supply is electrically connected with the underwater welding cutting external member through the connecting cable;

the underwater welding and cutting kit is an underwater stud welding gun, and a buoyancy protective sleeve is arranged on the outer surface of the connecting cable;

the underwater stud welding gun comprises a welding gun main body, an air supply and drainage device and a movable porcelain clamping ring device, wherein the air supply and drainage device is connected with the welding gun main body and is arranged at the front end of the welding gun main body;

the gas supply and drainage device comprises a sleeve structure and a drainage cover body, one end of the sleeve structure is connected with the drainage cover body, the end part, far away from the drainage cover body, of the sleeve structure is connected with the welding gun main body, the sleeve structure is provided with the gas hole, the gas hole is communicated with an inner cavity formed by the sleeve structure, and the movable porcelain clamping ring device is movably arranged in the sleeve structure;

the sleeve structure includes sealed sleeve and telescopic sleeve, sealed sleeve with the welder bulk phase is connected, remove the card porcelain ring device mobilizable set up in the telescopic sleeve, the telescopic sleeve set up in sealed sleeve's periphery just the telescopic sleeve with be provided with sleeve between the sealed sleeve and adjust the structure, through it enables to adjust the structure the telescopic sleeve is relative sealed sleeve produces the edge the horizontal migration of stud welding rifle axis direction under water.

2. An underwater emergency rescue system as claimed in claim 1, wherein the movable porcelain ring device is connected with the sealing sleeve by means of threads.

3. An underwater emergency rescue system as claimed in claim 2, wherein the adjustment structure comprises a fixing portion connected to the sealing sleeve, the fixing portion is provided with a first tapered thread, and the telescopic sleeve is provided with a second tapered thread engaged with the first tapered thread.

4. An underwater rescue method based on the underwater emergency rescue system of any one of claims 1 to 3, characterized by comprising the following steps:

s1, installing the lifting equipment on a working ship or a sea shore;

s2, a diver dives to find a sunken ship and a welding point position, and a stud is welded on the sunken ship through the underwater welding device;

s3, installing a hanging ring on the welding stud, and enabling a cable to penetrate through the hanging ring;

and S4, hoisting the sunken ship by the hoisting equipment through the cable to finish rescue.

5. The underwater rescue method of claim 4, wherein the welding method using the underwater welding device in the step S2 comprises the steps of:

s21, mounting the stud on an underwater stud welding gun, and enabling the underwater stud welding gun to be tightly attached to the surface of the sunken ship;

s22, starting the underwater stud welding gun to drain water, forming a local dry environment by using mixed gas in a gas supply system, and performing welding protection by using the mixed gas;

s23, during welding, firstly forming pilot current arc striking on the surfaces of the stud and the sunken ship, removing a coating and a vaporization water layer on the welding surface, and blowing off moisture by using dry mixed gas to form a dry welding environment locally;

s24, switching on welding current to melt the stud and the surface of the sunken ship to form a molten pool;

s25, slowly inserting the stud to be welded into a molten pool under the action of the restoring force of a main spring of the underwater stud welding gun;

s26, continuously applying a short current, and heating the welding joint to form a recrystallization joint;

and S27, lifting the underwater stud welding gun, and fixing the stud on the surface of the sunken ship.

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