Fragile ice making apparatus and method

Abstract

The application discloses a device and a method for preparing brittle ice. The device comprises a shell, a shaping tube, and a gas injection channel. The shell is capable of forming a closed containing cavity. The shaping tube is vertically installed in the containing cavity and forms an ice making cavity with the bottom of the shell. The ice making cavity is capable of injecting water. The gas injection channel is arranged in the shell wall and is capable of communicating with the bottom of the ice making cavity. During the ice making process, the containing cavity is in a closed state, and the gas injection channel continuously injects pressurized gas into the ice making cavity. The application can conveniently realize the artificial preparation of brittle ice.

Description

Technical Field

[0001] This invention relates to the field of polar glacier exploration, and more particularly to a device and method for preparing brittle ice. Background Technology

[0002] Currently, global resource issues are becoming increasingly prominent, and the polar regions, due to their abundant mineral resources, have attracted significant international attention. However, the development of polar resources faces numerous challenges, among which the study of the physical properties of ice layers is essential. Furthermore, brittle zones exist in deep glacier areas, which are highly susceptible to fracturing and disintegration during resource extraction; therefore, research on these ice layers is crucial.

[0003] Due to the harsh polar environment, in-situ ice core extraction is extremely difficult and cannot meet the requirements for repeated experiments. Furthermore, because ice cores exist deep within the ice layer under high environmental pressure, the pressure difference after drilling makes them highly susceptible to cracking or even fracturing, thus posing significant challenges to their preservation. Most importantly, the deep location of ice cores makes construction and operation in the polar regions extremely difficult.

[0004] Currently, the commonly used methods for artificially producing ice samples include the freezing water method, the high-pressure phase change method, and the pressure sintering method. However, these methods are only applicable to the preparation of conventional ice samples, and there is little research on methods for preparing brittle ice.

[0005] In summary, the study of the physical properties of brittle ice is crucial for the exploitation of polar resources, but research on artificial methods for preparing brittle ice is still lacking. Therefore, a new type of device is needed to achieve the artificial preparation of brittle ice. Summary of the Invention

[0006] The purpose of this invention is to provide an apparatus and method for preparing crispy ice, which can facilitate the artificial preparation of crispy ice.

[0007] The objective of this invention can be achieved using the following technical solutions:

[0008] This invention provides an apparatus for preparing crispy ice, comprising:

[0009] A shell, which can form a closed receiving cavity inside;

[0010] The shaping tube is installed vertically inside the receiving cavity and surrounds the bottom of the shell to form an ice-making cavity, which can be used to inject water.

[0011] The gas injection channel is located inside the shell wall of the housing and can communicate with the bottom of the ice-making cavity; during the ice-making process, the cavity is in a closed state, and the gas injection channel can continuously inject pressurized gas into the ice-making cavity.

[0012] In a preferred embodiment of the present invention, a plurality of vertically arranged air injection needles are provided at the bottom of the ice-making cavity, and the bottom of each air injection needle is connected to the air injection channel.

[0013] In a preferred embodiment of the present invention, the housing is provided with a pressure relief port and a pressure measuring port that can communicate with the receiving cavity.

[0014] In a preferred embodiment of the present invention, the brittle ice preparation device further includes a flexible tube, the shaping tube being formed by two semi-circular tubes joined together, the two semi-circular tubes abutting against the outer wall of the flexible tube and being detachably fixed by a fastener, the flexible tube and the bottom of the shell forming an ice-making cavity.

[0015] In a preferred embodiment of the present invention, the shell, the shaping tube, and the flexible tube are all made of transparent material.

[0016] In a preferred embodiment of the present invention, the crispy ice preparation apparatus further includes a support assembly disposed in the receiving cavity. The support assembly includes a straightening ring and at least two support rods. Each support rod is circumferentially spaced around the outer periphery of the shaping tube. The bottom of each support rod is connected to the bottom of the housing. The straightening ring is detachably connected to the top of each support rod. The top and bottom of the flexible tube are respectively sealed to the straightening ring and the bottom of the housing.

[0017] In a preferred embodiment of the present invention, the straightening ring includes a horizontally arranged straightening ring and an extension tube extending downward from the inner ring of the straightening ring. The straightening ring is connected to each support rod. The upper end of the flexible tube abuts against the outer wall of the extension tube and is sealed and fixed to the extension tube. An upwardly protruding convex post is provided at the bottom of the housing. The lower end of the flexible tube abuts against the outer wall of the convex post and is fixed to the convex post. The air injection channel extends upward through the top surface of the convex post.

[0018] In a preferred embodiment of the present invention, the housing includes an air injection base and a pressure control shell. The pressure control shell is a cylindrical structure with a closed top and an open bottom. The pressure control shell is upside down on the air injection base and is detachably connected to the air injection base. An air injection channel is opened inside the air injection base. The shaping tube and the air injection base enclose each other to form an ice-making cavity.

[0019] The present invention also provides a method for preparing crispy ice, comprising the following steps: vertically installing a shaping tube inside a shell so that the shaping tube and the bottom of the shell enclose an ice-making cavity; injecting water into the ice-making cavity; placing the crispy ice preparation device in a low-temperature container at a preset ice-making temperature; continuously injecting pressurized gas into the ice-making cavity from the bottom of the ice-making cavity; and freezing the water in the ice-making cavity to form an ice sample.

[0020] In a preferred embodiment of the present invention, before installing the shaping tube, a flexible tube is first installed inside the housing, the bottom of the flexible tube is sealed and fixed to the bottom of the housing, and the flexible tube and the bottom of the housing form an ice-making cavity; after the ice sample is formed, the following steps are also included: releasing the pressure inside the housing; removing the shaping tube; cutting open the flexible tube and taking out the ice sample.

[0021] As described above, the brittle ice preparation apparatus and method of this invention form an ice-making cavity within a housing using a shaping tube. During the ice-making process, pressurized gas is injected into the cavity from the bottom using an injection channel. Once the pressure within the housing stabilizes, the water inside the ice-making cavity is kept under a stable pressure. Gas is continuously injected into the water. Since water freezing takes time, once the water freezes into an ice sample, a certain amount of gas is present inside the ice sample, and the internal and external pressures reach equilibrium. At this point, the ice sample stores a certain amount of pressure. Because the formation of brittle ice primarily relies on the presence of internal pressure, this application achieves this by injecting gas into the ice-making cavity during the ice-making process, thus enabling the preparation of brittle ice. Furthermore, the structure is simple and the preparation process is convenient. Attached Figure Description

[0022] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0023] in:

[0024] Figure 1 : This is a schematic diagram of the structure of the crispy ice preparation device provided by the present invention.

[0025] Explanation of icon numbers:

[0026] 1. Housing; 11. Inflation base; 111. First truncated cone; 1111. Mounting groove; 112. Second truncated cone; 12. Pressure control housing; 121. Extension ring; 122. Bolt; 13. Pressure measuring port; 14. Pressure relief port; 15. Protrusion; 151. Protrusion;

[0027] 2. Shaping tube; 21. Flexible tube; 22. Ice-making chamber;

[0028] 3. Injection channel; 31. Injection port; 32. First channel; 33. Groove; 34. Second channel;

[0029] 4. Injection syringe;

[0030] 5. Support components; 51. Straightening ring; 511. Straightening ring; 512. Extension tube; 52. Support rod; 521. Step rod; 522. Nut. Detailed Implementation

[0031] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] like Figure 1 As shown, this application provides a crispy ice preparation apparatus, comprising:

[0033] The shell 1 has a closed receiving cavity that can be formed inside;

[0034] The shaping tube 2 is vertically installed in the receiving cavity and surrounds the bottom of the shell 1 to form an ice-making cavity 22, which can be used to inject water.

[0035] The gas injection channel 3 is located inside the shell wall of the housing 1 and can communicate with the bottom of the ice-making cavity 22. During the ice-making process, the cavity is in a closed state, and the gas injection channel 3 can continuously inject pressurized gas into the ice-making cavity 22.

[0036] The air injection channel 3 extends inward from one side of the bottom shell wall of the housing 1 and connects to the top surface of the bottom of the housing 1 to connect to the ice-making chamber 22. The end of the air injection channel 3 that connects to the bottom side wall of the housing 1 serves as its air injection port 31, which can be connected to a corresponding air injection pipe and air storage bottle. The ice-making chamber 22 is a cavity with a closed bottom and an open top, facilitating water injection from the top. A gap is left between the ice-making chamber 22 and the top of the housing 1. After water is injected into the ice-making chamber 22, the housing 1 is closed, keeping the cavity sealed. The entire brittle ice preparation device is then placed in a low-temperature environment at a preset ice-making temperature for ice making. Air is injected into the ice-making chamber 22 from the bottom using the air injection channel 3, maintaining a stable pressure within the entire housing 1. After a period of time, the water in the ice-making chamber 22 forms an ice sample, completing the ice-making process. The pressure inside the housing 1 is then released, and the ice sample in the shaping tube 2 is removed for further experimental research.

[0037] Therefore, the brittle ice preparation apparatus of this application forms an ice-making chamber 22 within the housing 1 using a shaping tube 2, and injects pressurized gas into the ice-making chamber 22 from the bottom using an injection channel 3 during the ice-making process. After the pressure inside the housing 1 stabilizes, the water inside the ice-making chamber 22 is kept under a stable pressure, and gas is continuously injected into the water. Since water freezing takes a certain amount of time, when the water freezes into an ice sample, there is a certain amount of gas inside the ice sample, and the internal and external pressures reach equilibrium. At this point, the ice sample has a certain internal pressure. Since the formation of brittle ice is mainly due to the presence of a certain internal pressure, this application, by injecting gas into the ice-making chamber 22 during the ice-making process, can ensure that the formed ice sample has a certain internal pressure, thereby realizing the preparation of brittle ice. Furthermore, the structure is simple and the preparation is convenient.

[0038] In a preferred embodiment, since the gas enters the ice-making chamber 22 from the bottom during injection, and the ice-making chamber 22 initially contains injected water, the water will exert pressure on the gas, which can easily cause the gas to aggregate. That is, multiple small bubbles generated by the gas can easily aggregate into large bubbles under the pressure of the water before continuing to flow upward. This results in some of the gas entering the water being small bubbles and some being aggregated large bubbles, which is not easy to control. However, in the actual polar environment, the gas bubbles formed inside the brittle ice are relatively uniform and there is no aggregation phenomenon.

[0039] Therefore, in order to better simulate the real process of brittle ice formation and the preparation of brittle ice in polar environments, multiple vertically arranged gas injection needles 4 are provided at the bottom of the ice-making chamber 22, and the bottom of each gas injection needle 4 is connected to the gas injection channel 3.

[0040] Each gas injection needle 4 is located inside the ice-making chamber 22. The specific number of gas injection needles 4 depends on the needs. The gas injection needles 4 have a relatively small diameter. The gas injected through the gas injection channel 3 is injected into the water through each of the smaller gas injection needles 4, which can effectively prevent gas accumulation and also facilitate the control of the gas injection volume. Since the gas inside the brittle ice in the polar environment is air, air is also preferred in this embodiment, which is more conducive to simulating real conditions.

[0041] Furthermore, in order to facilitate maintaining stable pressure inside the shell 1 during the ice-making process and to facilitate the release of pressure from the shell 1 after the ice sample is formed, the shell 1 is provided with a pressure relief port 14 and a pressure measuring port 13 that can communicate with the receiving cavity.

[0042] The pressure relief port 14 and the pressure measuring port 13 are generally symmetrically located on the top of the housing 1. In use, a pressure relief valve can be installed at the pressure relief port 14, and a corresponding pressure measuring element, such as a pressure sensor, can be installed at the pressure measuring port 13. During preparation, after gas is injected into the ice-making chamber 22 through the gas injection channel 3, the pressure inside the ice-making chamber 22 will gradually increase. Then, the gas will gradually fill the area between the outer periphery of the shaping tube 2 and the housing 1. When the pressure inside the housing 1 is detected by the pressure measuring port 13 to reach the design pressure, the pressure inside the housing 1 can be stabilized by releasing pressure through the pressure relief port 14 while the gas injection channel 3 continues to inject gas. After the ice sample is formed, the pressure inside the housing 1 can be relieved through the pressure relief port 14.

[0043] To facilitate the removal of the ice sample after it is formed, and to ensure the airtightness of the ice-making chamber 22, the brittle ice preparation device also includes a flexible tube 21. The shaping tube 2 is composed of two semi-circular tubes joined together. The two semi-circular tubes are attached to the outer wall of the flexible tube 21 and fixed in a detachable manner by fasteners. The flexible tube 21 and the bottom of the shell 1 form the ice-making chamber 22.

[0044] The flexible tube 21 can be made of silicone tubing, for example, and the shaping tube 2 can be made of metal tubing, for example. The fixing component can be a metal cable tie, which is used to secure the two semi-circular tubes after they are joined together. The ice-making chamber 22 is formed by wrapping a cylindrical silicone tubing. The silicone tubing can be broken with a knife to remove the ice sample after preparation, effectively solving the problem of difficult ice sample removal. Since the silicone tubing is a flexible material and water expands and deforms during ice formation, a metal shaping tube 2 with an inner diameter equal to its outer diameter is installed outside the silicone tubing. This prevents the ice core from expanding and damaging the structure, while protecting the ice-making chamber 22. For easy disassembly and subsequent ice core removal, the shaping tube 2 is composed of two semi-cylinders joined together, with an inner diameter equal to the outer diameter of the silicone tubing. Because the silicone tubing already ensures the airtightness of the ice-making chamber 22 except for the top opening, the joint of the two semi-circular tubes does not need to be sealed; it can be secured with a metal cable tie, which is simple and convenient.

[0045] The shell 1, the shaping tube 2, and the flexible tube 21 mentioned above can all be made of transparent material to facilitate observation of the formation process of brittle ice.

[0046] In order to facilitate the protection and support of the flexible tube 21, the brittle ice preparation device also includes a support component 5 located in the receiving cavity.

[0047] Specifically, the support assembly 5 includes a straightening ring 51 and at least two support rods 52. Each support rod 52 is circumferentially spaced around the outer periphery of the shaping tube 2. The bottom of each support rod 52 is connected to the bottom of the housing 1. The straightening ring 51 is detachably connected to the top of each support rod 52. The top and bottom of the flexible tube 21 are respectively sealed to the straightening ring 51 and the bottom of the housing 1.

[0048] The support assembly 5 is mainly for supporting the flexible tube 21 to form the ice-making cavity 22. Each support rod 52 is located in the annular cavity between the shaping tube 2 and the shell 1. The straightening ring 51 is fixedly connected to the bottom of the shell 1 through the support rods 52. The number of support rods 52 is determined as needed. For example, in this embodiment, two support rods 52 are provided. The straightening ring 51 can be made of metal, for example. In order to facilitate the fixing of the straightening ring 51 to the support rods 52 and the flexible tube 21, the straightening ring 51 includes a horizontally arranged straightening ring 511 and an extension tube 512 extending downward from the inner ring of the straightening ring 511. The straightening ring 511 is connected to each support rod 52. The upper end of the flexible tube 21 is attached to the outer wall of the extension tube 512 and is sealed and fixed to the extension tube 512.

[0049] A protruding post 15 protrudes upward from the bottom of the housing 1. The lower end of the flexible tube 21 abuts against the outer wall of the protruding post 15 and is fixedly connected to it. The air injection channel 3 extends upward through the top surface of the protruding post 15. Specifically, each of the aforementioned air injection needles 4 is installed on the top surface of the protruding post 15. The air injection channel 3 extends inside the protruding post 15 and extends upward through the top surface of the protruding post 15 to communicate with each air injection needle 4. If necessary, multiple protrusions 151 can also be provided upward on the top surface of the protruding post 15, and each air injection needle 4 is correspondingly located on the corresponding protrusion 151.

[0050] Multiple mounting holes (e.g., four) can typically be made circumferentially on the straightening ring 511. Each support rod 52 forms a stepped rod 521 with a reduced diameter at its upper end. The stepped rod 521 passes through the corresponding mounting hole and is fixedly connected to the straightening ring 511 using a nut 522. The upper inner wall of the flexible tube 21 rests against the outer wall of the extension tube 512, and the lower inner wall of the flexible tube 21 rests against the outer wall of the protrusion 15. Both locations can be sealed and fixed using adhesive or other methods.

[0051] To facilitate the connection between the support rod 52 and the bottom of the housing 1, at least two bolt holes can be provided on the upper surface of the bottom of the housing 1, and the lower end of the support rod 52 can be inserted into the corresponding bolt holes and threaded.

[0052] Furthermore, in order to facilitate the injection of water into the ice-making chamber 22 and the subsequent removal of ice samples, the housing 1 includes an air injection base 11 and a pressure control shell 12. The pressure control shell 12 is a cylindrical structure with a closed top and an open bottom. The pressure control shell 12 is upside down on the air injection base 11 and is detachably connected to the air injection base 11. The air injection channel 3 is opened inside the air injection base 11. The shaping tube 2 and the air injection base 11 enclose each other to form the ice-making chamber 22.

[0053] Specifically, in this embodiment, the shell 1 can be a cylindrical shell, the gas injection base 11 is a cylindrical base, and the pressure control shell 12 is a cylindrical cylinder. The pressure control shell 12, located outside the ice-making cavity 22, facilitates observation of the internal pressure state and adjustment of the internal pressure, while simultaneously achieving the device's pressure resistance effect. The shaping tube 2 and the flexible tube 21 are both cylindrical tubes, and the protruding post 15 is a cylindrical protruding post. The outer diameter of the protruding post 15 is approximately equal to the outer diameter of the extension tube 512 and the inner diameter of the flexible tube 21. Of course, other shapes can also be used as needed.

[0054] The entire gas injection base 11 is located at the bottom of the entire device, providing support for the whole device. For ease of connection, the gas injection base 11 can be configured according to... Figure 1The diagram shows a first frustum 111 and a second frustum 112 connected vertically. The diameter of the first frustum 111 is smaller than the diameter of the second frustum 112. Both the first frustum 111 and the second frustum 112 are cylindrical structures that can be integrally formed. An air injection port 31 is provided on the side wall of the second frustum 112. A mounting groove 1111 is provided on the top surface of the first frustum 111, and the bottom of the aforementioned protruding post 15 is engaged in the mounting groove 1111.

[0055] The gas injection channel 3 includes a first channel 32, a groove 33, and multiple second channels 34. The groove 33 is formed on the bottom surface of the protrusion 15. One end of the first channel 32 is connected to the outer wall of the first truncated cone 111 and forms a gas injection port 31. The other end is connected to the bottom of the mounting groove 1111 to communicate with the groove 33. Each second channel 34 is vertically arranged and penetrates the protrusion 15 vertically (and also penetrates the protrusion 151 upwards). The lower end of the second channel 34 is connected to the groove 33, and the upper end is connected to the corresponding gas injection needle tube 4. In use, the gas injection port 31 can be connected to an air inlet pipe to inject high-pressure air. A gas flow meter can be installed on the air inlet pipe to control the gas injection rate and facilitate stable gas injection into the ice-making chamber 22.

[0056] Multiple bolt holes (e.g., eight) are evenly provided on the top surface of the second truncated cone 112 and on the outer periphery of the first truncated cone 111. The pressure control shell 12 and the air injection base 11 together form a shell 1 with an internal pressure-bearing cavity (accommodation cavity). The pressure control shell 12 is a metal cylinder, slightly larger than the ice-making cavity 22. Its inner wall should have a gap between it and the outer wall of the support rod 52 and the straightening ring 511. The bottom outer wall of the pressure control shell 12 forms an outwardly protruding extension ring 121 (e.g., a metal ring). The inner diameter and height of the extension ring 121 are equivalent to the outer diameter and height of the first truncated cone 111, and the outer diameter is equivalent to the outer diameter of the second truncated cone 112. Multiple bolt holes are evenly provided on the extension ring 121 and correspond vertically to the multiple bolt holes on the second truncated cone 112. The extension ring 121 and the second truncated cone 112 can be sealed and fixed by bolts 122.

[0057] The entire brittle ice preparation device realizes the simulated generation of brittle ice in polar environments, laying the foundation for the study of brittle ice zones in deep ice layers, and is of great significance to polar glaciology and polar resource exploitation.

[0058] Furthermore, this application also provides a method for preparing crispy ice, comprising the following steps:

[0059] A shaping tube 2 is vertically installed inside the housing 1 so that the shaping tube 2 and the bottom of the housing 1 enclose an ice-making cavity 22.

[0060] Water is injected into the ice-making chamber 22;

[0061] Place the brittle ice preparation device in a low-temperature container at a preset ice-making temperature;

[0062] Pressurized gas is continuously injected into the ice-making chamber 22 from the bottom;

[0063] The water inside the ice-making chamber 22 freezes to form ice.

[0064] In this application, an ice-making chamber 22 is formed within the shell 1 using a shaping tube 2. During the ice-making process, pressurized gas is injected into the ice-making chamber 22 from its bottom. Once the pressure inside the shell 1 stabilizes, the water inside the ice-making chamber 22 is kept under a stable pressure, maintaining a pressure threshold state. Gas is continuously injected into the water. Since water freezing takes a certain amount of time, when the water freezes into an ice sample, a certain amount of gas exists inside the ice sample, and the internal and external pressures reach equilibrium. At this point, the ice sample stores a certain amount of pressure. Since the formation of brittle ice is mainly due to the presence of a certain amount of internal pressure, this application, by injecting gas into the ice-making chamber 22 during the ice-making process, enables the ice sample to store a certain amount of pressure, thereby achieving the preparation of brittle ice. The preparation method is simple.

[0065] Furthermore, in order to facilitate the removal of ice samples, before installing the shaping tube 2, a flexible tube 21 is first installed inside the shell 1. The bottom of the flexible tube 21 is sealed and fixed to the bottom of the shell 1, and the flexible tube 21 and the bottom of the shell 1 form an ice-making cavity 22.

[0066] After the ice sample forms, the following steps are also included:

[0067] Release the pressure inside housing 1;

[0068] Remove the shaping tube 2;

[0069] Cut open the flexible tube 21 and remove the ice sample.

[0070] The preparation method can specifically employ the aforementioned preparation apparatus. After releasing the pressure inside the shell 1, the shell 1 should be opened first (specifically, the pressure-controlled shell 1 should be removed), and then the shaping tube 2 should be disassembled. It is understood that when removing the ice sample, it may not be possible to remove it completely. When the internal pressure reaches a certain level and is released, the ice sample may immediately break down, simulating the characteristics of brittle ice after pressure release under natural conditions. The purpose of the preparation apparatus and method in this application is to prepare brittle ice. By applying pressure to the ice-making chamber 22 during the ice-making process, the formation of brittle ice is simulated. The core purpose is to simulate the preparation of polar brittle ice to facilitate the study of its formation and destructive characteristics; it does not require the removal of a complete ice sample.

[0071] The preparation method of this application will be illustrated by a specific embodiment below:

[0072] (1) Fix the support rod 52 at the designated position of the first frustum 111 of the air injection base 11, pass the straightening ring 511 of the straightening ring 51 through the support rod 52, and fix it with nut 522;

[0073] (2) The upper part of the silicone hose is bonded to the extension tube 512 at the lower part of the straightening ring 51, the lower part of the silicone hose is bonded to the protrusion 15, and the shaping tube 2 is attached to the silicone hose to form an ice-making cavity 22.

[0074] (3) As needed, inject an appropriate amount of water into the ice-making cavity 22, with the highest water level slightly lower than the lowest position of the straightening ring 51;

[0075] (4) Use bolts 122 to fix the pressure control housing 12 to the gas injection base 11, and place the entire device horizontally in the low temperature environment (low temperature container) at the set temperature, keeping the shaping tube 2 in the device vertical.

[0076] (5) Open the high-pressure gas and use the control device of the gas flow meter to slowly inject the high-pressure gas into the cavity through the gas injection port 31 at the set flow rate. As the gas is injected, the pressure inside the cavity gradually increases. When the pressure inside the cavity reaches the design pressure detected at the pressure measuring port 13, the ambient gas injection pump is turned off and the brittle ice simulation gas injection pump is turned on at the same time. The pressure threshold of the pressure relief port 14 is set, and part of the gas is automatically discharged. The pressure inside the cavity is kept stable through the pressure relief port 14. The device is placed in a low-temperature environment at the set temperature. After the ice sample is completely frozen, the ice sample preparation is completed.

[0077] (6) After the ice sample preparation is completed, the pressure inside the cavity is first released through the pressure relief port 14, and then the pressure control shell 12 and the shaping tube 2 are disassembled in sequence. After that, the silicone tube is cut open with a knife and the ice sample is taken out for the next experimental study.

[0078] In summary, this application provides a simple apparatus and method for preparing brittle ice, which can simulate the preparation of brittle ice in polar environments, simulate the formation and characteristics of polar brittle ice, and conduct physical research on it, filling a gap in the field of brittle ice preparation. It is easy to operate, has a simple structure, and a short preparation cycle, making it suitable for laboratory research on the properties of brittle ice. It has pioneering significance in the field of brittle ice preparation research. By adjusting the internal pressure of the ice-making chamber 22 and controlling the external temperature, the characteristics of brittle ice at different depths of the ice layer can be simulated, laying the foundation for future brittle ice preparation and related research.

[0079] The above are merely illustrative embodiments of the present invention and are not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A crispy ice preparation apparatus, characterized in that, include: A shell, which can form a closed receiving cavity inside; A shaping tube is vertically installed inside the receiving cavity and surrounds the bottom of the shell to form an ice-making cavity, which can be used to inject water. An air injection channel is located inside the shell wall of the housing and can communicate with the bottom of the ice-making cavity; during the ice-making process, the receiving cavity is in a closed state, and the air injection channel can continuously inject pressurized gas into the ice-making cavity; The flexible tube, wherein the shaping tube is formed by joining two semi-circular tubes together, the two semi-circular tubes are attached to the outer wall of the flexible tube and are detachably fixed by fasteners, and the flexible tube and the bottom of the shell form the ice-making cavity; A support assembly is provided within the receiving cavity. The support assembly includes a straightening ring and at least two support rods. Each support rod is circumferentially spaced around the outer periphery of the shaping tube. The bottom of each support rod is connected to the bottom of the housing. The straightening ring is detachably connected to the top of each support rod. The top and bottom of the flexible tube are respectively sealed to the straightening ring and the bottom of the housing.

2. The crispy ice preparation apparatus as described in claim 1, characterized in that, Multiple vertically arranged air injection needles are provided at the bottom of the ice-making cavity, and the bottom of each air injection needle is connected to the air injection channel.

3. The crispy ice preparation apparatus as described in claim 1, characterized in that, The housing is provided with a pressure relief port and a pressure measuring port that can communicate with the receiving cavity.

4. The crispy ice preparation apparatus as described in claim 1, characterized in that, The shell, the shaping tube, and the flexible tube are all made of transparent material.

5. The crispy ice preparation apparatus as described in claim 1, characterized in that, The straightening ring includes a horizontally arranged straightening ring and an extension tube extending downward from the inner ring of the straightening ring. The straightening ring is connected to each of the support rods, and the upper end of the flexible tube is attached to the outer wall of the extension tube and sealed and fixed to the extension tube. The bottom of the housing has an upwardly protruding post, the lower end of the flexible tube is attached to the outer wall of the post and fixed to the post, and the air injection channel extends upward through the top surface of the post.

6. The crispy ice preparation apparatus as described in claim 1, characterized in that, The housing includes an air injection base and a pressure control shell. The pressure control shell is a cylindrical structure that is closed at the top and open at the bottom. The pressure control shell is upside down on the air injection base and is detachably connected to the air injection base. The air injection channel is opened inside the air injection base. The shaping tube and the air injection base enclose the ice-making cavity.

7. A method for preparing crispy ice, characterized in that, Includes the following steps: A shaping tube is vertically installed inside the shell so that the shaping tube and the bottom of the shell enclose an ice-making cavity; Water is injected into the ice-making chamber; The crisp ice preparation apparatus as described in any one of claims 1-6 is placed in a low-temperature container at a preset ice-making temperature; Pressurized gas is continuously injected into the ice-making chamber from the bottom. The water inside the ice-making chamber freezes to form ice.

8. The method for preparing crispy ice as described in claim 7, characterized in that, Before installing the shaping tube, a flexible tube is first installed inside the housing. The bottom of the flexible tube is sealed and fixed to the bottom of the housing, and the flexible tube and the bottom of the housing form the ice-making cavity. After the ice sample is formed, the following steps are also included: Release the pressure inside the housing; Remove the shaping tube; Cut open the flexible tube and remove the ice sample.

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