KR101559258B1 - Method for generating granular eg/ad model ice - Google Patents

Abstract

Disclosed are a device and a method to generate granular EG/AD model ice capable of generating model ice at uniform thickness and strength in an ice basin. According to an aspect of the present invention, the device to generate granular EG/AD model ice comprises: a frame; a movable frame formed on the frame to be movable; a spraying nozzle arranged in the movable frame to spray EG/AD granules; and a driving part to move the movable frame to adjust the spraying position of the spraying nozzle. According to the other aspect of the present invention, the method to generate granular EG/AD model ice using the device to generate granular EG/AD model ice comprises: a cooling step of cooling an atmospheric temperature to a set cooling temperature after the device to generate granular EG/AD model ice is positioned in the upper part of an ice basin; a spraying step of supplying an ED/AD mixing solution and then spraying the granules using the spraying nozzle to laminate the model ice on the surface of the ice basin at a predetermined thickness; a preservation step of preserving the laminated model ice for first set hours; a consolidation step of consolidating the model ice preserved for the first set hours for second set hours; and a tempering step of lowering the strength of the model ice consolidated for the second set hours to be a set strength.

Description

{METHOD FOR GENERATING GRANULAR EG / AD MODEL ICE}

The present invention relates to a particle type EG / AD model ice making apparatus and method, and more particularly, to a particle EG / AD model ice making apparatus capable of generating model ice with uniform thickness and strength in an ice- Apparatus and method.

Currently, there are five to six ice storage tanks around the world (facilities for evaluating the performance of ice vessels operating on polar poles or polarity offshore plants or polarity offshore plants), and model ice is essential to carry out model tests.

In Korea, only an ice water tank was constructed at KRISO in August 2009, and a columnar EG / AD model ice was developed and used (Patent Registration No. 10-1080148, 2011-10-31).

In the case of columnar EG / AD model ice, after the ice nucleus (fresh water) is sprayed once, the atmospheric temperature in the ice bath is cooled for a long time, and ice is formed from the surface of the water tank.

Since the columnar model ice is frozen in the same way as the sea ice of the polar ice, it is judged that it is appropriate to identify the failure mechanism of sea ice.

However, there is a local difference in the atmospheric temperature due to the arrangement of the cooler in the ice water tanks, which causes differences in the thickness and strength of the columnar EG / AD model ice.

As a result, it has the complexity of finding a zone that satisfies the thickness and strength, conducting a model test, or applying a correction factor after testing on a differential model ice.

Therefore, there is a need for a technical solution for creating model ice with uniform thickness and strength throughout the ice storage tank.

EG / AD model ice and method for generating the same (Korean Patent Laid-Open Publication No. 10-2011-0108312)

It is an object of the present invention to provide a particle type EG / AD model ice making device and method capable of producing model ice with uniform thickness and strength in an ice water bath.

The problems to be solved by the present invention are not limited to the above-mentioned problem (s), and another problem (s) not mentioned here will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, A moving frame movably formed on the frame; An injection nozzle provided in the moving frame to inject EG / AD particles; And a driving unit for moving the moving frame to adjust a jetting position of the jetting nozzle.

At this time, the frame has a box shape, and the moving frame is provided at the upper end of the frame and can be formed to be movable in the front-rear direction of the frame.

The injection nozzle may be installed to penetrate the moving frame up and down, and may be formed to spray ice particles to a lower portion of the frame.

The driving unit may further include: a driving motor; And a driving screw connected to one side of the frame and rotated by the driving motor to move the moving frame.

The apparatus may further include a height adjusting unit provided at a lower portion of the frame.

At this time, the height adjuster may include at least one height adjusting screw for adjusting the height of the frame according to the rotation direction.

According to another aspect of the present invention, there is provided a particle type EG / AD model ice making method using a particle type EG / AD model ice making apparatus, comprising the steps of: (a) A cooling step of cooling the atmospheric temperature to a set cooling temperature; (b) a spraying step of supplying a mixture of EG / AD and spraying particles using the spraying nozzle to deposit a model ice of a desired thickness on the surface of the ice bath; (c) a preserving step of preserving the stacked model ice during a first set time; (d) combining the model ice kept during the first set time for a second set time; And (e) a temperature elevation step of lowering the intensity of the combined model ice during the second set time to a target intensity.

In the step (a), the cooling temperature may be set within a range of -15 to -25 ° C.

In the step (b), the EG / AD mixed solution stored in the storage tank is supplied to the injection nozzle using a pump, and the particle diameter of the particles injected through the injection nozzle can be set within a range of 0.1 to 1.0 mm.

In the step (c), the first set time may be set within 0.5 to 1.0 hour.

In the step (d), the second set time may be set within 1.5 to 2.5 hours.

According to the particle type EG / AD model ice making apparatus and method of the present invention, it is possible to uniformly and quickly generate the model ice used in the ice water tank, and more uniformly and quickly than the conventional column EG / AD model ice Can be generated.

Furthermore, since the ice particles are stacked in the air, the microbubble generator automatically has a minute air layer. Therefore, the micro bubble generating device used in the existing columnar EG / AD model ice is not required, so that the convenience of operation can be improved.

Furthermore, there is an advantage of visibility, which is more advantageous in the ice-making model test than the existing columnar model ice. As a result, it is possible to perform a variety of ice model tests more quickly, and it can be helpful to improve the accuracy of the test because it is carried out in a uniform model ice.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram schematically showing a particle type EG / AD model ice making device according to an embodiment of the present invention; FIG.
FIG. 2 is a flowchart schematically illustrating a method of generating a particle type EG / AD model ice sheet according to an embodiment of the present invention. FIG.
FIG. 3 is a graph schematically illustrating a particle type EG / AD model ice making method according to an embodiment of the present invention. FIG.
FIG. 4 is a graph schematically showing the change in the atmospheric temperature and the time during the generation of the conventional EG / AD model ice. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Particle type EG / AD model ice making device

1 is a conceptual view briefly showing a particle type EG / AD model ice making device according to an embodiment of the present invention.

1, the particle type EG / AD model ice producing apparatus 100 includes a frame 101, a moving frame 103, an injection nozzle 110, a driving unit 120, and a height adjusting unit 130 .

The frame 101 is a structure attached to a service carriage of an ice water tank, and may be provided in the form of, for example, a rectangular frame, but is not limited thereto.

The moving frame 103 refers to a moving member in the form of a bar that is formed to be movable on the frame 101.

Specifically, the moving frame 103 may be coupled to the upper end of the frame 101 and be movable in the forward and backward directions of the frame.

The injection nozzle 110 is disposed inside the length of the moving frame 103 and refers to a nozzle member for generating ice particles by spraying particles, that is, EG / AD particles.

For example, the injection nozzle 110 may be installed vertically downwardly through the moving frame 103 so as to face the nozzle opening. Thereby, the ice particles can be jetted toward the lower portion of the frame 101, that is, the surface of the ice-making water tank.

The driving unit 120 is configured to move the moving frame 103 in the forward and backward directions within the frame 101, and can adjust the injection position of the injection nozzle 110.

Specifically, for example, the driving unit 120 may include a driving motor 121 and a driving screw 123.

Here, the drive motor 121 is a device for generating a rotational force in accordance with an electric signal as is conventionally known, and a kind of motor can be used without limitation.

The driving screw 123 is a screw member that is rotated by receiving the rotational force generated from the driving motor 121. The moving frame 103 moves in the forward and backward directions according to the rotation direction of the driving screw 123, and the position can be adjusted.

Meanwhile, the particle type EG / AD model ice producing apparatus 100 described above further includes a height adjusting unit 130.

The height adjuster 130 is provided at a lower portion of the frame 101 to adjust the height thereof.

The height adjuster 130 may be provided at a lower portion of the frame 101. Preferably at least one height adjuster 130 is provided for each lower corner of the frame 101 so that the height of the frame 101 Adjustable height adjustment screws can be used.

Particle type EG / AD model ice making method

FIG. 2 is a flow chart briefly showing a method of generating particle EG / AD model ice according to an embodiment of the present invention, and FIG. 3 is a schematic diagram of a method of generating particle EG / AD model ice according to an embodiment of the present invention. Fig.

Referring to FIG. 2, the particle type EG / AD model ice producing method includes a cooling step S100, a spraying step S200, a preserving step S300, a consolidating step S300, S400 and a tempering step S500. Hereinafter, a detailed description of each step will be described with reference to FIG.

The cooling step (S100)

This step corresponds to a cooling step, in which the particle type EG / AD model ice producing device is placed on the upper part of the ice-making water tank, and then the ambient temperature is cooled to the set cooling temperature. Here, the cooling temperature is preferably set within a range of -15 to -25 占 폚. Preferably to a cooling temperature of -20 < 0 > C.

As a specific example of this step, the particle type EG / AD model ice-making device (100 in FIG. 1) described above is placed on a laboratory-sized ice-water bath, and then the ambient temperature is lowered to -20 캜. At this time, the temperature of the water in the water tank is maintained at around 0 ° C.

In the injection step S200,

This step corresponds to the step of supplying EG / AD mixed liquid as a spraying step and spraying the particles using the spray nozzle to stack the model ice of a desired thickness on the surface of the ice bath.

The EG / AD mixed solution stored in the reservoir can be supplied to the injection nozzle through a pump. The size of the particles injected through the injection nozzle, that is, the particle size, is preferably set within a range of 0.1 to 1.0 mm.

As a specific example of this step, the EG / AD mixed solution stored in a separate vessel, that is, the reservoir in the initial environment, is moved to the injection nozzle through the pump. When the injection nozzle is sprayed with particles of 0.1 to 1.0 mm, Phase change to ice particles.

Then, the phase-changed ice particles are stacked on the surface of the water tank.

Conservation step (S300)

This step corresponds to a preserving phase, that is, a preserving phase, which preserves the stacked model ice during the first set time. Here, the first set time may be set within 0.5 to 1.0 hours.

As a concrete example of this step, if the model ice is laminated to the desired thickness through the spraying step in the previous step, the ice is subjected to the preservation phase process for about 0.5 to 1.0 hour so that the ice particles do not scatter to each other.

In the combining step S400,

This step corresponds to a combining step, i.e., a consolidation phase, of combining the model ice kept during the first set time for the second set time. Here, the second set time may be set within 1.5 to 2.5 hours. Preferably, the second set time may be about 2 hours.

As a concrete example of this step, the model ice after the preservation step can change into the elastic body through the consolidation phase process of about 2 hours because it shows plasticity.

In the heating step (S500)

This step corresponds to a step of adjusting the temperature of the combined model ice to the target intensity by lowering the combined model ice during the second set time as a temperature rising step, i.e., a tempering phase.

As a concrete example, the model ice which has been converted into the elastic body through the coupling step may be increased in strength in the joining step. In this step, a tempering phase process is performed to lower the strength. In this way, the intensity of the target model ice can be adjusted.

As described above, in the case of the particle type EG / AD model ice making method according to an embodiment of the present invention, different physical properties (for example, a first set time in the storage step, a first set time in the combining step, For example, strength, elastic modulus, etc.), which can reduce the time and energy required to produce a model ice sheet.

FIG. 4 is a graph schematically showing changes in the atmospheric temperature and time during the production of the conventional EG / AD model ice. In comparison with FIG. 3, FIG. 4 shows that 40 mm and 30 kPa columnar ice- In the case of FIG. 3, it takes about 12 hours to prepare the granular model ice sheet having the same physical characteristics, which is advantageous in that the model ice sheet can be more efficiently prepared and prepared than the conventional method.

As described above, according to the structure and function of the present invention, it is possible to uniformly and quickly generate the model ice used in the ice water tank, and more uniformly and quickly generate the model ice than the existing column EG / AD model ice .

Furthermore, since the ice particles are stacked in the air, the microbubble generator automatically has a minute air layer. Therefore, the micro bubble generating device used in the existing columnar EG / AD model ice is not required, so that the convenience of operation can be improved.

Furthermore, there is an advantage of visibility, which is more advantageous in the ice-making model test than the existing columnar model ice. As a result, it is possible to perform a variety of ice model tests more quickly, and it can be helpful to improve the accuracy of the test because it is carried out in a uniform model ice.

Up to now, the particle type EG / AD model ice making apparatus and method of the present invention have been described with reference to preferred embodiments.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the appended claims, therefore, should be construed as being included within the scope of the present invention.

S100: cooling step
S200: injection step
S300: Conservation step
S400: Coupling step
S500:
100: particle type EG / AD model ice making device
101: frame
103: Moving frame
110: injection nozzle
120:
121: drive motor
123: Driving screw
130:

Claims (11)

delete delete delete delete delete delete frame;
A moving frame movably formed on the frame;
A spray nozzle provided in the moving frame to spray particles; And
And a driving unit for moving the moving frame to adjust a jetting position of the jetting nozzle,
A particle type EG / AD model ice making method using a particle type EG / AD model ice producing device,
(a) a cooling step of cooling the atmospheric temperature to a set cooling temperature after placing the particle type EG / AD model ice-making device on the ice-making water tank;
(b) a spraying step of supplying a mixture of EG / AD and spraying particles using the spraying nozzle to deposit a model ice of a desired thickness on the surface of the ice bath;
(c) a preserving step of preserving the stacked model ice during a first set time;
(d) combining the model ice kept during the first set time for a second set time; And
(e) a temperature elevation step of lowering the intensity of the combined model ice during the second set time to a desired intensity,
Particle type EG / AD model ice making method.
8. The method of claim 7,
In the step (a)
The cooling temperature may be in the range of -15 to -25 占 폚,
Particle type EG / AD model ice making method.
8. The method of claim 7,
In the step (b)
The EG / AD mixed solution stored in the storage tank is supplied to the injection nozzle using a pump,
Wherein a particle diameter of the particles injected through the injection nozzle is within a range of 0.1 to 1.0 mm,
Particle type EG / AD model ice making method.
8. The method of claim 7,
In the step (c)
Wherein the first set time is set within 0.5 to 1.0 hours,
Particle type EG / AD model ice making method.
8. The method of claim 7,
In the step (d)
Wherein the second set time is set within 1.5 to 2.5 hours,
Particle type EG / AD model ice making method.

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