Carbon dioxide bubble icebreaking device for underwater high-pressure gas icebreaking experiment

Abstract

The invention belongs to the technical field of polar region icebreaking, and particularly relates to a carbon dioxide bubble icebreaking device for an underwater high-pressure gas icebreaking experiment. The liquid carbon dioxide filling gun comprises a liquid storage gun body, a liquid injection head and a gun head, liquid carbon dioxide is filled into a liquid storage space in the liquid injection head through a liquid injection hole, and after sufficient pressure is achieved, the liquid carbon dioxide pushes away a sealing check block and enters the internal space of the liquid storage gun body through a hollow sealing plug and a positioner; the high-temperature heat conduction rod in the internal space of the liquid storage gun body generates high temperature, the liquid carbon dioxide is gasified instantly, and when the expanded high-pressure carbon dioxide gas reaches the pressure threshold value of the pressure switch, the expanded high-pressure carbon dioxide gas is sprayed out of the gun head. According to the underwater high-pressure gas source releasing device, rapid releasing of an underwater high-pressure gas source under the condition that the gas amount is adjustable is achieved, enough high-pressure gas source can be released at a time to generate large pressure and load, and an ice layer large in thickness and high in strength is damaged. According to the invention, the modular design is adopted, and good practicability and wide applicability are achieved.

Description

Technical Field

[0001] This invention belongs to the field of polar icebreaking technology, specifically relating to a carbon dioxide bubble icebreaking device for underwater high-pressure gas icebreaking experiments. Background Technology

[0002] The Arctic region is rich in resources and has enormous shipping potential. Mastering effective icebreaking technology is a crucial prerequisite for unlocking the value of Arctic resources and shipping. Traditional ramming and continuous icebreaking methods rely on direct contact between the ship's hull and the ice layer, placing high demands on the ship's structure and potentially causing damage, threatening the safety of vessels navigating in polar regions. Completely different from traditional icebreaking methods, high-pressure bubble icebreaking is a non-contact icebreaking method. It involves exciting compressed gas under the ice, causing the gas to rapidly expand, then contract, pulsate, and collapse in the water. The resulting shock waves and jet loads damage the ice layer. High-pressure bubble icebreaking is a highly efficient and safe icebreaking method that reduces fuel consumption for polar vessels, improving shipping economy while ensuring their safety.

[0003] By experimentally studying the fluid-structure interaction problem in the high-pressure bubble ice-breaking mechanism, we can obtain a reasonable flow field load and ice layer damage mode, improve the ice-breaking capability of the high-pressure bubble ice-breaking device, and have important engineering application significance and scientific theoretical value for improving the navigation safety of polar ships.

[0004] In high-pressure bubble icebreaking experiments, improving the icebreaking capability of the high-pressure bubble icebreaking device and releasing a sufficient amount of high-pressure gas to break thicker and stronger ice layers is crucial, and also essential for ensuring the safe operation of polar vessels. Among existing underwater high-pressure gas icebreaking experimental technologies, the patent application No. 201910228272.X, "An Air Gun Device for Underwater High-Pressure Gas Icebreaking Experiments," uses compressed air as the high-pressure gas source. However, its small gas storage capacity and low air gun pressure limit the ice thickness and strength it can break. To break thicker and stronger ice layers, this device uses liquid carbon dioxide as the high-pressure gas source. Based on the principle that liquid carbon dioxide instantly vaporizes upon heating (expanding 500 times), high-pressure gas is generated and released under the ice for icebreaking experiments. On one hand, the gas produced by the thermal expansion of the same volume of liquid carbon dioxide is far greater than the gas produced by compressed air released into the water, resulting in greater pressure and load, which is beneficial for breaking thicker and stronger ice layers. On the other hand, using liquid carbon dioxide as the high-pressure gas source consumes less raw material when breaking the same amount of ice, making it more economical for polar vessels.

[0005] In existing liquid carbon dioxide blasting devices, taking patents with application numbers 202211104189.X and 202320369024.9 as examples, for rock fracturing operations, it is necessary to pre-drill holes in the rock mass. The device is placed vertically in the pre-drilled hole, and the vent holes are symmetrically arranged on the side wall of the device. During blasting, high-pressure carbon dioxide gas breaks through the fracturing disc and rapidly expands and releases along the radial direction of the pre-drilled hole. The resulting stress wave impacts the cylindrical surface of the pre-drilled hole in the rock mass, thereby achieving the effect of blasting the rock mass. The gas storage capacity of the above devices cannot be adjusted, and the pre-drilling operation is complicated, which will affect the stress characteristics of the ice layer and is not conducive to experimental research. In addition, the fracturing disc is damaged after releasing high-pressure gas once, and the fracturing disc needs to be replaced manually when restarting the device, which is complicated and not conducive to repeated experiments. Therefore, it is not suitable for underwater high-pressure gas ice-breaking experiments. Summary of the Invention

[0006] The purpose of this invention is to provide a carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments, which enables adjustable gas volume of the underwater high-pressure gas source, and can release sufficient high-pressure gas source to break ice layers with greater thickness and strength. It is simple to operate, safe and reliable, and low in cost.

[0007] A carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments includes a liquid storage gun body and an injection head and a nozzle mounted on the liquid storage gun body. The liquid storage gun body has a high-temperature heat-conducting rod inside. One end of the injection head has an injection hole, and the injection head has a liquid storage space inside, which communicates with the internal space of the liquid storage gun body. A locator and a hollow sealing plug are provided at the interface. One side of the locator abuts against a protrusion structure on the inner wall of the liquid storage gun body, and the other side abuts against the hollow sealing plug. The locator itself has a through hole. A sealing block is provided at the entrance of the internal space of the hollow sealing plug, and the sealing block is connected to the locator via a spring. In its natural state, the spring is compressed, and the locator and the sealing block move away from each other under the spring force, blocking and sealing the entrance of the internal space of the hollow sealing plug.

[0008] Furthermore, liquid carbon dioxide is filled into the storage space inside the injection head through the injection hole. After reaching sufficient pressure, the liquid carbon dioxide pushes open the sealing block and enters the internal space of the storage gun body through the hollow sealing plug and the positioner. High temperature is generated by the high-temperature heat conduction rod, which instantly vaporizes the liquid carbon dioxide. The expanded high-pressure carbon dioxide gas is sprayed out from the gun head.

[0009] Furthermore, the gun head includes a gun head shell, a gun head cap on top of the gun head shell, and the internal space of the gun head shell communicates with the internal space of the liquid storage gun body. A gun head positioner and a hollow electromagnetic piston are provided at the interface of the communication. The gun head positioner is fixed to a limiting platform provided on the outer wall of the liquid storage gun body. A piston limiting platform is provided on the inner wall of the gun head shell. An electromagnetic coil is provided between the piston limiting platform and the gun head positioner. The electromagnetic coil is controlled and powered by a pressure switch. The hollow electromagnetic piston is located above the gun head positioner and is located inside the electromagnetic coil. The hollow electromagnetic piston is connected to the gun head cap through a gun head connecting rod. The gun head cap is connected to the gun head positioner through a return spring, which passes through the hollow part of the hollow electromagnetic piston. The pressure switch is installed in the internal space of the liquid storage gun body. In the natural state, the pressure switch is in the open state, and the gun head cap blocks and seals the top of the gun head shell.

[0010] Furthermore, the high-temperature heat-conducting rod inside the liquid storage gun generates high temperature, instantly vaporizing the liquid carbon dioxide. When the expanded high-pressure carbon dioxide gas reaches the pressure threshold of the pressure switch, the pressure switch is activated, the electromagnetic coil is energized, and the hollow electromagnetic piston moves upward under the action of the electromagnetic coil, driving the gun head cap upward through the gun head connecting rod. Since the pressure is much higher than the elastic force of the return spring, the gun head cap is pushed upward, and the high-pressure carbon dioxide gas is released rapidly. After the release is complete, the pressure switch is disconnected, and the gun head cap returns to its original position under the action of the return spring, sealing the top of the gun head shell.

[0011] Furthermore, the liquid storage gun body includes a gun body shell, one end of which is provided with an end cap, and the other end is connected to the injection head. The injection head is installed on the side wall of the liquid storage gun body. A volume regulating valve is provided inside the gun body shell. A support is installed at the front end of the volume regulating valve, and the rear end of the volume regulating valve is connected to a volume regulating rod. The end of the volume regulating rod passes through the end cap. The volume inside the liquid storage gun body is adjusted by the volume regulating rod and the volume regulating valve. The high-temperature heat conducting rod is installed on the support.

[0012] Furthermore, the portion of the capacity adjustment rod extending from the end cap is engraved with capacity markings, allowing the volume of the liquid storage gun body to be adjusted to the set volume according to the capacity markings on the capacity adjustment rod.

[0013] Furthermore, the wire used to energize the high-temperature heat-conducting rod passes through the support and the center of the capacity regulating valve, and is led out through the capacity regulating rod and the terminal block.

[0014] Furthermore, the gun body shell is made of pressure-resistant material using a one-piece molding technology; the right end of the gun body shell has an external threaded structure for screwing in the injection head, and an internal boss for fixing the positioner; the left end of the gun body shell has an internal threaded structure for screwing in the end cap.

[0015] Furthermore, the outer wall of the hollow sealing plug is stepped, which is used to abut against the limiting platform set on the inner wall of the injection head; the interior of the hollow sealing plug is frustum-shaped, with the smallest radius at the entrance of the internal space, which is used to seal and block the block.

[0016] Furthermore, the locator is a cross locator; the lower side wall of the injection head has a drain hole, which remains sealed during the filling stage and can be opened after completion to drain the residual liquid carbon dioxide inside the injection head.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention enables the rapid release of an underwater high-pressure gas source with adjustable gas volume. It can release a sufficient amount of high-pressure gas in a single operation to generate significant pressure and load, effectively breaking down thick and strong ice layers. Its application in polar icebreaking offers significant economic benefits. The invention employs a modular design, resulting in simple construction and installation, safe and convenient operation, high repeatability, and suitability for pool experiments. It demonstrates excellent practicality and wide applicability. Attached Figure Description

[0019] Figure 1 This is a front view of a carbon dioxide bubble ice-breaking device used in underwater high-pressure gas ice-breaking experiments.

[0020] Figure 2 This is a top view of a carbon dioxide bubble ice-breaking device used in underwater high-pressure gas ice-breaking experiments;

[0021] Figure 3 This is a structural diagram of the injection head in a naturally sealed state.

[0022] Figure 4 This is a structural diagram of the injection head when it is filled with liquid carbon dioxide.

[0023] Figure 5 This is a structural diagram of the spearhead in a naturally sealed state.

[0024] Figure 6 This is a structural diagram of the gun head in the released state.

[0025] Figure 7 This is a diagram illustrating the damage effect of the present invention on thick and strong ice layers. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings.

[0027] This invention provides a carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments, such as... Figure 1-6As shown, the device comprises three parts: a reservoir gun body 1, an injection head 2, and a nozzle 3. The reservoir gun body 1 and the injection head 2 are connected by a threaded fastener, and the nozzle 3 is mounted on the side wall of the reservoir gun body 1. The reservoir gun body 1 includes a gun body shell 1-1, an end cap 1-2, a capacity adjustment rod 1-3, a capacity adjustment valve 1-4, a support 1-5, a high-temperature heat-conducting rod 1-6, a terminal block 1-7, and a pressure-resistant switch 1-8. The injection head 2 includes an injection hole 2-1, a hollow sealing plug 2-2, a sealing block 2-3, a spring 2-4, a cross-shaped locator 2-5, and a drain hole 2-6. The nozzle 3 includes a nozzle shell 3-1, a nozzle cross-shaped locator 3-2, an electromagnetic coil 3-3, a hollow electromagnetic piston 3-4, a nozzle connecting rod 3-5, a nozzle cap 3-6, and a return spring 3-7.

[0028] See Figure 1 and Figure 2 The outer shell 1-1 of the liquid storage gun body 1 is made of pressure-resistant material using a one-piece molding technology. The right end of the outer shell 1-1 has an external threaded structure for screwing in the injection head 2; an internal boss 1-1-1 is provided for fixing the cross-shaped locator 2-5. The left end of the outer shell 1-1 has an internal threaded structure for screwing in the end cap 1-2. The end cap 1-2 has an opening in the center through which the capacity adjustment rod 1-3 passes. The left end of the capacity adjustment rod 1-3 extends out of the end cap 1-2, with capacity markings engraved on the protruding portion. The right end connects to the capacity adjustment valve 1-4. The volume of the liquid storage gun body 1 can be adjusted by the capacity adjustment rod 1-3 and the capacity adjustment valve 1-4. The right end of the capacity regulating valve 1-4 is screwed to a high-temperature heat-conducting rod support 1-5, and the high-temperature heat-conducting rod 1-6 can be fixed on the central axis of the liquid storage gun body 1 by the support 1-5. At the same time, the wire used to energize the high-temperature heat-conducting rod 1-6 passes through the center of the support 1-5 and the capacity regulating valve 1-4, and is led out through the terminal 1-7 via the capacity regulating rod 1-3. A pressure-resistant switch 1-8 is installed inside the liquid storage gun body 1, and the pressure-resistant switch can be turned on or off according to the internal pressure of the liquid storage gun body 1.

[0029] See Figure 3 and Figure 4The upper side wall of the injection head 2 has an injection hole 2-1 for connection to a high-pressure pump, used to fill the device with liquid carbon dioxide during the test preparation stage. The left end of the injection head 2 has an internal threaded structure for screwing onto the liquid storage gun body 1. A hollow sealing plug 2-2 is installed inside the injection head. The outer wall of the hollow sealing plug 2-2 is stepped, abutting against the inner limiting platform of the injection head 2. The interior of the hollow sealing plug 2-2 is frustoconical, containing a sealing block 2-3 that abuts against the through hole on the right side of the hollow sealing plug 2-2. A spring 2-4 is connected to the left side of the sealing block 2-3, extending out of the left through hole of the hollow sealing plug 2-2 and connecting to the cross-shaped locator 2-5. Simultaneously, the left end of the cross-shaped locator 2-5 abuts against the boss structure 1-1-1 inside the liquid storage gun body 1, and the right end abuts against the hollow sealing plug 2-2. In its natural state, spring 2-4 is compressed, and the cross-shaped locator 2-5 and the sealing block 2-3 are separated by the elastic force of spring 2-4. The through hole on the right side of the hollow sealing plug 2-2 is blocked and sealed by the sealing block 2-3. When the high-pressure pump starts filling the device with liquid carbon dioxide through the injection port 2-1, the sealing block 2-3 is pushed open by the liquid carbon dioxide, and spring 2-4 is further compressed. The liquid carbon dioxide enters the liquid storage gun body 1 through the hollow sealing plug 2-2 and the cross-shaped locator 2-5. After filling, spring 2-4 returns to its original position, and the sealing block 2-3 seals the device under the action of spring 2-4. A drain hole 2-6 is left on the lower side wall of the injection head, which remains sealed during the filling process. After the experiment, it can be opened to drain the remaining liquid carbon dioxide in the injection head 2.

[0030] See Figure 5 and Figure 6 The gun head 3 housing 3-1 is integrally formed with the gun body housing 1-1. A limiting platform 1-1-2 is provided at the bottom of the gun head 3 housing 1-1 to fix the downward movement of the gun head crosshair locator 3-2. An electromagnetic coil 3-3 is installed above the gun head crosshair locator 3-2, and the electromagnetic coil 3-3 is controlled and powered by a pressure switch 1-8. The electromagnetic coil 3-3 and the hollow electromagnetic piston 3-4 form an active moving component, driving the gun head cap 3-6 upward through the gun head connecting rod 3-5 to achieve rapid release of high-pressure gas. A piston limiting platform 3-1-1 is provided inside the gun body housing 3-1 to limit the range of motion of the hollow electromagnetic piston 3-4 and prevent it from flying out. The upper end of the return spring 3-7 is connected to the gun head cap 3-6, and the lower end passes through the middle of the hollow electromagnetic piston 3-4 and connects to the gun head crosshair locator 3-2, used to reset and seal the gun head cap 3-6 after each test.

[0031] The principle of this invention is as follows: First, the volume of the liquid storage gun body 1 is adjusted to the set volume according to the scale on the capacity adjustment rod 1-3. Then, liquid carbon dioxide is filled into the device through the injection hole 2-1 using a high-pressure pump. During filling, the liquid carbon dioxide pushes open the sealing block 2-3 and enters the liquid storage gun body 1 through the hollow sealing plug 2-2 and the cross locator 2-5. After filling, the spring 2-4 returns to its original position, and the sealing block 2-3 seals the device under the action of the spring 2-4. Subsequently, the power is turned on. When the microcurrent passes through the high-temperature heat-conducting rod 1-6, high temperature is generated, instantly vaporizing the liquid carbon dioxide and expanding it 500 times. When the pressure of the high-pressure gas generated by the expansion reaches the pressure set by the pressure switch 1-8, the pressure switch 1-8 is turned on. The hollow electromagnetic piston 3-4 moves upward under the action of the electromagnetic coil 3-3, and drives the gun head cap 3-6 to move upward through the gun head connecting rod 3-5. Because the pressure is much higher than the elastic force of the return spring 3-7, the nozzle cap 3-6 will be pushed upwards, and the high-pressure gas will be rapidly released into the water. After the high-pressure gas is released, the pressure switch 1-8 will disconnect, and the nozzle cap 3-6 will move rapidly downwards under the tension of the return spring 3-7, pressing against the nozzle muzzle to seal the nozzle and prevent water from flowing back into the nozzle. At the same time, the hollow electromagnetic piston 3-4, which has been de-energized, will reset. The high-pressure gas released into the water expands rapidly, then contracts, pulsates, and collapses. The shock wave and jet load generated in this process damage the ice layer. See [link to relevant documentation]. Figure 7 .

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments, characterized in that: The invention comprises a liquid storage gun body (1), a liquid injection head (2) and a gun head (3) mounted on the liquid storage gun body (1); a high-temperature heat-conducting rod (1-6) is arranged inside the liquid storage gun body (1); a liquid injection hole (2-1) is opened on the wall surface at one end of the liquid injection head (2); a liquid storage space is arranged inside the liquid injection head (2); the liquid storage space of the liquid injection head (2) is connected with the internal space of the liquid storage gun body (1), and a positioner (2-5) and a hollow sealing plug (2-2) are arranged at the connection interface; one side of the positioner (2-5) is connected with a boss structure (1-1-1) arranged on the inner wall surface of the liquid storage gun body (1) ) is abutted against one side, and the other side is abutted against the hollow sealing plug (2-2), and the locator (2-5) itself is provided with a through hole; a sealing block (2-3) is provided at the entrance of the internal space of the hollow sealing plug (2-2), and the sealing block (2-3) is connected to the locator (2-5) through a spring (2-4); in a natural state, the spring (2-4) is in a compressed state, and the locator (2-5) and the sealing block (2-3) are moved away from each other under the action of the elastic force of the spring (2-4), and the entrance of the internal space of the hollow sealing plug (2-2) is blocked and sealed by the sealing block (2-3).

2. A carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 1, characterized in that: Liquid carbon dioxide is filled into the liquid storage space inside the liquid injection head (2) through the liquid injection hole (2-1). When sufficient pressure is reached, the liquid carbon dioxide pushes away the sealing block (2-3) and enters the internal space of the liquid storage gun body (1) through the hollow sealing plug (2-2) and the positioner (2-5); high temperature is generated by the high-temperature heat conducting rod (1-6), and the liquid carbon dioxide is instantly gasified, and the expanded high-pressure carbon dioxide gas is ejected from the gun head (3).

3. The carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 1 is characterized by: The gun head (3) comprises a gun head shell (3-1), a gun head cap (3-6) is arranged on the top of the gun head shell (3-1), the internal space of the gun head shell (3-1) is connected with the internal space of the liquid storage gun body (1), and a gun head locator (3-2) and a hollow electromagnetic piston (3-4) are arranged at the connecting junction; the gun head locator (3-2) is fixed on a limit platform (1-1-1) arranged on the outer wall surface of the liquid storage gun body (1), a piston limit platform (3-1-1) is arranged on the inner wall surface of the gun head shell (3-1), and an electromagnetic piston (3-4) is arranged between the piston limit platform (3-1-1) and the gun head locator (3-2). The electromagnetic coil (3-3) is powered by a pressure switch (1-8); the hollow electromagnetic piston (3-4) is located above the gun head locator (3-2) and is arranged inside the electromagnetic coil (3-3); the hollow electromagnetic piston (3-4) is connected to the gun head cap (3-6) through a gun head connecting rod (3-5); the gun head cap (3-6) is connected to the gun head locator (3-2) through a return spring (3-7); the return spring (3-7) passes through the hollow part of the hollow electromagnetic piston (3-4); the pressure switch (1-8) is installed in the internal space of the liquid storage gun body (1); In a natural state, the pressure switch (1-8) is in an off state, and the gun head cap (3-6) blocks and seals the top of the gun head housing (3-1).

4. The carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 3 is characterized by: The high-temperature heat-conducting rod (1-6) in the internal space of the liquid storage gun body (1) generates high temperature, which instantly gasifies the liquid carbon dioxide. When the expanded high-pressure carbon dioxide gas reaches the pressure threshold of the pressure switch (1-8), the pressure switch (1-8) is turned on, the electromagnetic coil (3-3) is energized, and the hollow electromagnetic piston (3-4) moves upward under the action of the electromagnetic coil (3-3), and drives the gun head cap (3-6) to move upward through the gun head connecting rod (3-5); because the pressure is much higher than the elastic force of the return spring (3-7), the gun head cap (3-6) is pushed upward, and the high-pressure carbon dioxide gas is quickly released; after the release is completed, the pressure switch (1-8) is disconnected, and the gun head cap (3-6) returns to its original position under the action of the return spring (3-7), blocking and sealing the top of the gun head shell (3-1).

5. The carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 1 is characterized by: The liquid storage gun body (1) comprises a gun body shell (1-1), one end of the gun body shell (1-1) is provided with an end cover (1-2), and the other end is connected to a liquid injection head (2), the gun head (3) is mounted on the side wall of the liquid storage gun body (1), a capacity regulating valve (1-4) is arranged inside the gun body shell (1-1), a support (1-5) is mounted at the front end of the capacity regulating valve (1-4), the rear end of the capacity regulating valve (1-4) is connected to a capacity regulating rod (1-3), the end of the capacity regulating rod (1-3) passes through the end cover (1-2), and the volume inside the liquid storage gun body (1) is adjusted by the capacity regulating rod (1-3) and the capacity regulating valve (1-4); the high-temperature heat conductive rod (1-6) is mounted on the support (1-5).

6. The carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 5, characterized in that: The portion of the capacity adjustment rod (1-3) extending out of the end cover (1-2) is engraved with capacity scales, and the volume of the liquid storage gun body (1) can be adjusted to a set volume according to the capacity scales on the capacity adjustment rod (1-3).

7. The carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 5, characterized in that: A wire for energizing the high-temperature heat-conducting rod (1-6) passes through the center of the support (1-5) and the capacity regulating valve (1-4), and is led out through the capacity regulating rod (1-3) and the terminal (1-7).

8. The carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 5, characterized in that: The gun body shell (1-1) is made of pressure-resistant material using an integrated molding technology; a threaded structure is provided on the right end of the gun body shell (1-1) for screwing the liquid injection head (2) and a boss (1-1-1) is provided on the inside for fixing the positioner (2-5); a threaded structure is provided on the left end of the gun body shell (1-1) for screwing the end cover (1-2).

9. The carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 1, characterized in that: The outer wall of the hollow sealing plug (2-2) is stepped and is used to abut against a limit platform provided on the inner wall of the injection head (2); the interior of the hollow sealing plug (2-2) is truncated cone-shaped, and the radius at the entrance of the internal space is the smallest, which is used for sealing by the sealing block (2-3).

10. The carbon dioxide bubble ice-breaking device for underwater high-pressure gas ice-breaking experiments according to claim 1, characterized in that: The positioner (2-5) is a cross positioner; a drainage hole (2-6) is left on the side wall of the lower end of the liquid injection head (2), which is always kept in a sealed state during the filling stage and can be opened after the filling is completed to discharge the liquid carbon dioxide remaining in the liquid injection head (2).

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