KR102618109B1 - Concentric multi-tube cryogenic vaporizer for preventing freezing of heating medium and method of preventing freezing of heating medium using the same - Google Patents

Abstract

A concentric multi-tube cryogenic vaporizer for preventing fruit freezing according to an embodiment of the present invention includes a liquefied gas injection part for injecting liquefied gas, a vaporized gas outlet for discharging the vaporized gas to the outside, and ethylene glycol, which is the fruit. Chambers each provided with an ethylene glycol water injection unit for injecting water into the internal space; A concentric multi-tube pipe disposed in the inner space of the chamber in a coil shape and having an inner part in communication with the liquefied gas injection part, a plurality of inner walls, and an outer part facing the inner wall of the chamber; And it is disposed in the inner space of the concentric multiple pipe in a form that connects the inner part, the plurality of inner walls, and the outer part of the concentric multi-tube, so that the liquefied gas injected from the liquefied gas injection part flows from the inner part to the outer part, and ethylene A plurality of helical vanes transmit the heat of the glycol water from the outer part of the concentric multiple tube in contact with the ethylene glycol water to the inner part of the concentric multiple tube, wherein the concentric multitube cryogenic vaporizer is connected to the concentric multiple tube. The injected liquefied gas is heated by the heat of the ethylene glycol water received by the plurality of spiral vanes and is vaporized into vaporized gas. As the temperature of the outer portion of the concentric multi-tube increases due to vaporization of the liquefied gas, the chamber of the chamber Freezing of ethylene glycol water injected into the internal space can be minimized.

Description

Concentric multi-tube cryogenic vaporizer for preventing freezing of heating medium and method of preventing freezing of heating medium using the same}

The present invention relates to a concentric multi-tube cryogenic vaporizer for preventing fruit freezing and a method for preventing fruit freezing using the same. More specifically, to a concentric multi-tube cryogenic vaporizer capable of minimizing freezing of ethylene glycol water, which is the fruit of a heat exchanger, and the same. This relates to a method for preventing fruit freezing.

The conventional heat exchanger shown in FIGS. 1 and 2 is a heat exchanger for LNG fuel supply bunkering, and has been disclosed as prior literature through a patent application.

Referring to Figures 1 and 2, the conventional heat exchanger is a barge, which is a fuel supply ship that supplies LNG fuel to ships that use LNG as fuel, and one side of the cylindrical body of the LNG bunkering heat exchanger installed on the barge. An inlet 5 and an outlet 6 through which liquid LNG flows into the case are formed, and a heater inlet 7 through which vaporized LNG flows into the heater and a heater outlet 8 through which vaporized LNG flows out are formed. The glycol water inlet (1) for the vaporizer, the glycol water outlet (2) for the vaporizer, the glycol water inlet (3) for the heater, and the glycol water outlet (4) for the heater are formed to transform LNG from liquid state into gaseous state. It can be changed and supplied to the engine.

However, in the case of a heat exchanger that uses ethylene glycol water as a heat source like a conventional heat exchanger, the injection temperature of liquefied hydrogen and liquefied nitrogen to perform heat exchange with ethylene glycol water is 30 to 70 K, and the freezing point of ethylene glycol water is 30 to 70 K. Depending on the concentration, it has a range of -70 to -30 ℃, so there is a problem in that freezing of ethylene glycol occurs during the heat exchange process depending on the temperature range difference, which causes the function of the heat exchanger to be lost.

Accordingly, there is a need for research and development of devices to prevent the function of the heat exchanger from being lost due to freezing of ethylene glycol water.

Republic of Korea Patent Publication No. 10-2160341

Therefore, the present invention was conceived to improve the problems of the conventional ethylene glycol water heat exchanger, and the purpose of the present invention is to prevent the freezing of the ethylene glycol water, which is a problem of the conventional heat exchanger, by using the liquefied gas as ethylene glycol water. The aim is to provide a concentric multi-tube cryogenic vaporizer for preventing freezing of fruit, which can minimize freezing of ethylene glycol water, which is fruit, by vaporizing it into vaporized gas by heat, and a method for preventing fruit freezing using the same.

In particular, the object of the present invention is that the ethylene glycol water gradually transfers heat from the outer part of the concentric multi-tube towards the inner part, and the liquefied gas moving from the inner part of the concentric multi-tube towards the outer part is heated by the ethylene glycol water. To provide a concentric multi-tube cryogenic vaporizer for preventing fruit freezing that can minimize freezing of ethylene glycol water by increasing the temperature of the outer portion of the concentric multi-tube when vaporized with vaporization gas, and a method for preventing fruit freezing using the same. there is.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly apparent to those skilled in the art from the description below. It will be understandable.

As a technical means for achieving the above object, a concentric multi-tube cryogenic vaporizer for preventing fruit freezing according to an embodiment of the present invention includes a liquefied gas injection part for injecting liquefied gas, and a device for discharging the vaporized gas to the outside. a chamber each provided with a vaporized gas outlet and an ethylene glycol water injection unit for injecting the resulting ethylene glycol water into the internal space; A concentric multi-tube pipe disposed in the inner space of the chamber in a coil shape and having an inner part in communication with the liquefied gas injection part, a plurality of inner walls, and an outer part facing the inner wall of the chamber; And it is disposed in the inner space of the concentric multiple pipe in a form that connects the inner part, the plurality of inner walls, and the outer part of the concentric multi-tube, so that the liquefied gas injected from the liquefied gas injection part flows from the inner part to the outer part, and ethylene A plurality of helical vanes transmit the heat of the glycol water from the outer part of the concentric multiple tube in contact with the ethylene glycol water to the inner part of the concentric multiple tube, wherein the concentric multitube cryogenic vaporizer is connected to the concentric multiple tube. The injected liquefied gas is heated by the heat of the ethylene glycol water received by the plurality of spiral vanes and is vaporized into vaporized gas. As the temperature of the outer portion of the concentric multi-tube increases due to vaporization of the liquefied gas, the chamber of the chamber Freezing of ethylene glycol water injected into the internal space can be minimized.

On the other hand, as a method to achieve the above object, the method of preventing fruit freezing using a concentric multi-tube cryogenic vaporizer is: a) the ethylene glycol water, which is the fruit, is injected into the chamber through the ethylene glycol water injection part of the chamber; Injecting into the internal space; b) injecting liquefied gas into the inner part of the concentric multi-tube through the liquefied gas injection part of the chamber; c) flowing the liquefied gas injected into the inner portion of the concentric multiple pipe through a plurality of spiral vanes from the inner portion of the concentric multiple pipe toward a plurality of inner walls and from the plurality of inner walls toward an outer portion of the concentric multiple pipe; d) transferring the heat of ethylene glycol water injected into the inner space of the chamber from the outer portion of the concentric multiple pipe to a plurality of inner walls and from the plurality of inner walls to the inner portion of the concentric multiple pipe through the plurality of spiral vanes; e) While the liquefied gas flows from the inner part of the concentric multiple tube toward the outer part, the plurality of spiral vanes are heated by the heat of the ethylene glycol water delivered and are vaporized into vaporized gas, and the concentric multiple tube is vaporized by vaporization of the liquefied gas. As the temperature of the outer part of the tube increases, freezing of the ethylene glycol water injected into the inner space of the chamber is minimized.

According to one embodiment of the present invention, the temperature of the outer part of the concentric multiple tube increases as the liquefied gas moving from the inner part of the concentric multiple tube towards the outer part is heated by ethylene glycol water and vaporized into vaporized gas, thereby increasing the ethylene in the chamber. Freezing of glycol water can be prevented.

According to one embodiment of the present invention, freezing of the ethylene glycol water is prevented through heat exchange between the vaporized gas and the ethylene glycol water in the chamber, thereby preventing ice growth in the chamber and loss of function of the heat exchanger. .

However, the effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned above will be clearly understood by those skilled in the art from the description below. You will be able to.

Figure 1 is a cross-sectional view showing a vaporizer (heat exchanger) of a fuel supply device provided in a conventional heat exchanger.
Figure 2 is an external view showing the vaporizer (heat exchanger) of a fuel supply device provided in a conventional heat exchanger.
Figure 3 is a cross-sectional view showing a concentric multi-tube cryogenic vaporizer according to an embodiment of the present invention.
Figure 4 is a perspective view showing a spiral vane according to an embodiment of the present invention.
Figure 5 is a diagram showing the temperature distribution of liquefied gas and ethylene glycol water in a concentric multi-tube cryogenic vaporizer according to an embodiment of the present invention.
Figure 6 is a diagram showing the temperature distribution state of the concentric multi-tube cryogenic vaporizer according to an embodiment of the present invention.
Figure 7 is a diagram showing the temperature distribution of liquefied gas and ethylene glycol water in a heat exchanger without concentric multi-tubes.
Figure 8 is a flowchart showing the process of a method for preventing fruit freezing using a concentric multi-tube cryogenic vaporizer according to an embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, since the description of the present invention is only an example for structural or functional explanation, the scope of the present invention should not be construed as limited by the examples described in the text. In other words, since the embodiments can be modified in various ways and can have various forms, the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea. In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment must include all or only such effects, so the scope of the present invention should not be understood as limited thereby.

The meaning of terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are used to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, a first component may be named a second component, and similarly, the second component may also be named a first component. When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between. On the other hand, when a component is referred to as being “directly connected” to another component, it should be understood that there are no other components in between. Meanwhile, other expressions that describe the relationship between components, such as "between" and "immediately between" or "neighboring" and "directly neighboring" should be interpreted similarly.

Singular expressions should be understood to include plural expressions, unless the context clearly indicates otherwise, and terms such as “comprise” or “have” refer to the specified features, numbers, steps, operations, components, parts, or them. It is intended to establish the existence of a combination, and should be understood as not excluding in advance the possibility of the existence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein, unless otherwise defined, have the same meaning as commonly understood by a person of ordinary skill in the field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as consistent with the meaning they have in the context of the related technology, and cannot be interpreted as having an ideal or excessively formal meaning unless clearly defined in the present invention.

Concentric multi-tube cryogenic vaporizer

Hereinafter, the concentric multi-tube cryogenic vaporizer 100 for preventing fruit freezing according to an embodiment of the present invention will be described in detail.

Figure 3 is a cross-sectional view showing a concentric multi-tube cryogenic vaporizer according to an embodiment of the present invention.

Referring to FIG. 3, the concentric multi-tube cryogenic vaporizer 100 according to an embodiment of the present invention allows the liquefied gas to be heated and vaporized into vaporized gas as heat exchange occurs between the liquefied gas and the ethylene glycol water, which is the heat exchanger. By heat-exchanging ethylene glycol water with different freezing points (or freezing points) from the liquefied gas during the generation of vaporized gas, freezing of the ethylene glycol water can be prevented.

In one embodiment, ethylene glycol water is a fluid (or liquid) that is a mixture of ethylene glycol and water. The ratio of ethylene glycol to water is 50:50 and the freezing point is -34°C, or the ratio of ethylene glycol to water is 60:40 and the freezing point is -34°C. This may be -48°C.

In one embodiment, the liquefied gas is a refrigerant in a preset temperature range of -243.15 (30 K) to -203.15 ℃ (70 K), and may be a fluid that is different from liquefied natural gas, and specifically, liquefied nitrogen or liquefied natural gas. It could be hydrogen.

In one embodiment, the concentric multi-tube cryogenic vaporizer 100 is provided with a chamber 110 that provides a space where heat exchange between the liquefied gas and ethylene glycol water occurs.

In one embodiment, the chamber 110 is provided with a concentric multi-pipe 111 that provides a flow path for the liquefied gas and vaporized hydrogen generated when the liquefied gas is vaporized.

In one embodiment, the chamber 110 is provided with a flow pipe in which a liquefied gas injection unit 112 for injecting liquefied gas into the concentric multi-pipe 111 extends from the top to the bottom, and the concentric multi-pipe ( A vaporized gas outlet 113 is provided at the lower side to discharge the vaporized gas moving downward along 111) to the outside.

In one embodiment, the chamber 110 is provided with an ethylene glycol water injection portion 114 that surrounds a portion of the outer peripheral surface of the liquefied gas injection portion 112 that protrudes upward from the top of the chamber 110, The liquefied gas injection unit 112 and the ethylene glycol water injection unit 114 may be implemented as concentric pipes (or double pipes) through which heat exchange between the liquefied gas and ethylene glycol water occurs.

In this configuration, the liquefied gas in the liquefied gas injection unit 112 and the ethylene glycol water injection unit 114 of the concentric tube structure, ethylene glycol water with the highest heat and the fastest flow rate before heat exchange of the liquefied gas. By exchanging heat, the chamber 110 can prevent freezing of the ethylene glycol water and maximize the heat exchange efficiency of the liquefied gas.

In addition, the chamber 110 increases the temperature of the liquefied gas based on heat exchange occurring in the liquefied gas injection unit 112, thereby improving the efficiency of generating vaporized gas in the concentric multi-tube 111, By maximizing the heat exchange efficiency between the liquefied gas and ethylene glycol water, freezing of the ethylene glycol water can be easily prevented.

In one embodiment, the chamber 110 is provided with an ethylene glycol water outlet 115 that surrounds a portion of the outer peripheral surface of the vaporized gas outlet 113 protruding downward from the lower part of the chamber 110, The vaporized gas outlet 113 and the ethylene glycol water outlet 115 transfer heat to the vaporized gas and the liquefied gas, and the ethylene glycol water contacts the outer portion 111c of the concentric multi-tube whose temperature is increased by the vaporized gas. It can be implemented as a concentric pipe capable of outflow (or discharge).

In this configuration, as the temperature of the ethylene glycol water flowing out of the ethylene glycol water outlet 115 is increased by the vaporized gas flowing out to the outside through the vaporized gas outlet 113, the ethylene glycol water flowing out to the outside is increased. Freezing can be minimized.

In one embodiment, the concentric multi-pipe 111 is provided in a form in communication with the liquefied gas injection unit 112 and the vaporized gas outlet 113, thereby receiving the liquefied gas injected from the liquefied gas injection unit 112. A flow path is provided to deliver the vaporized gas generated through vaporization of the liquefied gas to the vaporized gas outlet 113, thereby allowing the vaporized gas to flow out to the outside.

In one embodiment, the concentric multi-pipe 111 is in communication with the liquefied gas injection unit 112 and the liquefied gas is preferentially injected into the inner portion 111a close to the center of the chamber 110, and the liquefied gas is formed in a spiral shape to be described later. The vane 116 moves from the inner portion 111a of the concentric multiple pipe 111 toward the outer portion 111c facing the inner wall 110a of the chamber along the plurality of inner walls 111b provided in the concentric multiple pipe 111. It can be fluid.

In one embodiment, the concentric multiple pipe 111 is formed in a coil shape with a plurality of inner walls 111b, and the flow direction of the liquefied gas may be the same as the coil shape of the concentric multiple pipe 111.

In one embodiment, the outer portion 111c of the concentric multi-tube 111, which is formed integrally with the inner surface, comes into contact with the ethylene glycol water injected into the inner space 110b of the chamber through the ethylene glycol water injection portion 114. Heat is transferred from the ethylene glycol water through the outer portion 111c, and the received heat is transferred to the liquefied gas flowing inside to enable heat exchange between the liquefied gas and the ethylene glycol water.

In one embodiment, the chamber 110 increases the heat exchange time between the liquefied gas and ethylene glycol water within the concentric multiple pipe 111, and the heat of the ethylene glycol water received by the outer portion 111c of the concentric multiple pipe 111 is distributed to the plurality of inner walls ( In order to allow the liquefied gas to flow from the inner part (111a) of the concentric multiple pipe towards the outer part (111c) while being delivered to the inner part (111a) of the concentric multiple pipe through 111b), it is supplied to the inner space of the concentric multiple pipe (111). A helical vane 116 is provided.

Figure 4 is a perspective view showing a spiral vane according to an embodiment of the present invention.

Referring to FIG. 4, the spiral vane 116 has an outer portion 111c of the concentric multiple pipe, an inner wall 111b closer to the inner portion 111a than the outer portion 111c, and an inner wall 111b of the concentric multiple pipe and the inner wall ( By being disposed in the inner space of the concentric multiple pipe 111 in a form that connects the inner wall 111b closer to the inner portion 111a than 111b), the heat of the ethylene glycol water received by the outer portion 111c of the concentric multiple pipe is concentrically distributed. Ensure that it is delivered to the inner part (111a) of the multi-tube.

In one embodiment, the spiral vanes 116 are preferably provided in plural numbers so that the heat of the ethylene glycol water received by the outer portion 111c of the concentric multiple pipe is transmitted to the inner portion 111a of the concentric multiple pipe.

In one embodiment, the plurality of helical vanes 116 may be composed of a plurality of first helical vanes 116a, second helical vanes 116b, and third helical vanes 116c.

In one embodiment, the plurality of first spiral vanes 116a connect the outer part 111c of the concentric multi-pipe and the inner wall 111b, which is closer to the inner part 111a than the outer part 111c, to heat the ethylene glycol water. It can be transmitted to the inner wall (111b).

In one embodiment, the plurality of second spiral vanes (116b) are formed on the inner wall (111b) of the concentric multi-tube, which receives the heat of the ethylene glycol water through the first spiral vane (116a), and on the inner side (111b) of the inner wall (111b). By connecting the inner wall 111b adjacent to 111a), the heat of ethylene glycol water can be transferred to the inner wall 111b.

In one embodiment, the third helical vane (116c) is installed on the inner portion (111a) of the concentric multiple pipe adjacent to the inner wall (111b) of the concentric multiple pipe that receives heat through the second helical vane (116b), thereby producing ethylene glycol. The heat of water can be transferred to the inner part 111a.

In one embodiment, the plurality of helical vanes 116, excluding the third helical vane 116c installed on the inner part 111a, the remaining first helical vanes 116a are connected to the outer part 111c of the concentric multi-pipe and the outer part ( It can be welded on the inner wall 111b, which is closer to the inner part 111a than 111c, so that there is no gap, and the second helical vane 116b receives the heat of the ethylene glycol water through the first helical vane 116a. The inner wall 111b of the concentric multi-pipe can be welded on the inner wall 111b closer to the inner part 111a than the inner wall 111b so that there is no gap.

In one embodiment, the first and second helical vanes 116a and 116b are concentric multiple pipes shown in FIG. 3 so as to be in close contact with the inner wall 111b and the outer portion 111c of the concentric multiple pipes joined through welding without any gap. Based on the pipe cryogenic vaporizer 100, the horizontal direction is equal to the diameter between the outer portion 111c of the concentric multiple pipe and the inner wall 111b adjacent to the outer portion 111c of the concentric multiple pipe and the inner wall 111b of the concentric multiple pipe. It can be manufactured so that the length of the vane in the (or transverse direction) is formed.

In one embodiment, the first and second helical vanes (116a, 116b) are manufactured so that they can be coupled without gaps on the inner wall (111b) and the outer portion (111c) of the concentric multi-pipe. It is possible to prevent liquefied gas flowing into the inner wall (111b) and outer portion (111c) of the concentric multiple pipe coupled to (116a, 116b) from flowing back into the inner portion (111a) of the concentric multiple pipe.

In one embodiment, the first and second spiral vanes (116a, 116b) prevent backflow of the liquefied gas by flowing the liquefied gas from the inner portion (111a) of the concentric multiple pipe along the inner wall (111b) of the concentric multiple pipe. When flowing toward the outer portion (111c) of the inner portion (111a), the flow direction is reversed from the lower direction, which is the flow direction of the inner portion (111a), and then reversed upward, and then changed again to the lower direction, and the liquefied gas concentric multi-pipe (111). This means preventing the backflow of liquefied gas, which flows back into the inner part (111a) of the concentric multi-pipe when it spreads in all directions within.

In one embodiment, the first and second spiral vanes (116a, 116b) are coupled to the inner wall (111b) and the outer portion (111c) of the concentric multi-pipe, thereby transferring heat of the ethylene glycol water to the liquefied gas that induces flow. Heat transfer efficiency can be maximized.

In one embodiment, the third spiral vane (116c) is an inner wall (111b) of the concentric multiple tube that receives heat through the second spiral vane (116b), based on the concentric multiple tube cryogenic vaporizer 100 shown in Figure 3. ) The length of the vane in the horizontal direction may be formed shorter than the radius (or radius) of the inner portion 111a of the concentric multi-pipe adjacent to ).

In one embodiment, the third helical vane (116c) is formed shorter than the radius of the inner part (111a) of the concentric multi-pipe because of the liquefied gas injected into the inner part (111a) of the concentric multi-pipe through the liquefied gas injection unit 112. This is to prevent the inner portion 111a of the concentric multi-tube from being blocked by interfering with the flow of gas.

In this configuration, the temperature of the liquefied gas injected from the liquefied gas injection unit 112 into the inner portion 111a of the concentric multiple pipe is lower than that of the liquefied gas flowing to the inner wall 111b and the outer portion 111c of the concentric multiple pipe. Since the flow rate is low and the flow rate is high, this is to prevent the inner portion 111a of the concentric multi-pipe from being blocked by liquefied gas.

In one embodiment, the third helical vane (116c) is formed shorter than the radius of the inner portion (111a) of the concentric multiple pipe because the temperature of the liquefied gas injected into the inner portion (111a) of the concentric multiple pipe is low and the flow rate is high. Since the amount of heat transfer of ethylene glycol water to the liquefied gas decreases depending on the state, this is to generate only a swirl flow of the liquefied gas on the inner portion 111a of the concentric multi-tube.

In one embodiment, the concentric multi-tube 111 and the spiral vane 116 are configured as a rotating body based on the ethylene glycol water injection unit 114, which is a flow pipe, to increase the heat transfer area of the liquefied gas.

Figure 5 is a diagram showing the temperature distribution state of liquefied gas and ethylene glycol water in a concentric multi-tube cryogenic vaporizer according to an embodiment of the present invention, and Figure 6 is a concentric multi-tube cryogenic vaporizer according to an embodiment of the present invention. This is a diagram showing the temperature distribution state, and Figure 7 is a diagram showing the temperature distribution state of liquefied gas and ethylene glycol water in a heat exchanger not equipped with a concentric multi-tube.

Referring to FIG. 5, the concentric multiple tube cryogenic vaporizer 100 operates when the liquefied gas reaches the outer part (111c) of the concentric multiple tube along the inner wall (111b) from the inner part (111a) of the concentric multiple tube. The outer portion 111c of the tube transfers the heat received from the ethylene glycol water stored in the internal space 110b of the chamber to the liquefied gas, so that the liquefied gas can be heated and vaporized into a vaporized gas.

This configuration allows heat exchange between the vaporized gas and ethylene glycol water in the outer portion (111c) of the concentric multiple pipe, so that the temperature of the ethylene glycol water is relatively lower than that of the inner portion (111a) of the concentric multiple pipe, as shown in FIG. By bringing it into contact with the outer portion 111c of the high concentric multi-tube, freezing of the ethylene glycol water can be prevented.

Referring to FIG. 7, in the case of the heat exchanger 200 not equipped with the concentric multi-tube 111, the liquefied gas is ethylene using the side wall of the tube 220 provided in the chamber 210 as a boundary without a separate heat transfer process. By directly exchanging heat with glycol water, the amount of heat transferred from the liquefied gas to the ethylene glycol water becomes relatively smaller than that of the concentric multi-tube cryogenic vaporizer 100 according to an embodiment of the present invention, thereby lowering the temperature raised by the vaporized gas. At the same time, the ethylene glycol water is more likely to freeze.

Accordingly, the concentric multi-tube cryogenic vaporizer 100 has the effect of minimizing the generation of vaporized gas with a relatively high temperature and the probability of freezing of ethylene glycol water in the chamber 110 compared to a heat exchanger without a concentric multi-tube. .

How to prevent fruit from freezing

Hereinafter, the method (S100) for preventing fruit freezing using the concentric multi-tube cryogenic vaporizer (100) will be described in detail.

Figure 8 is a flowchart showing the process of a method for preventing fruit freezing using a concentric multi-tube cryogenic vaporizer according to an embodiment of the present invention.

Referring to Figure 8, the method for preventing fruit freezing (S100) includes an ethylene glycol water injection step (S110), a liquefied gas injection step (S120), a liquefied gas flow step (S130), a heat transfer step (S140), liquefied gas vaporization, and It includes a concentric multi-tube temperature raising step (S150).

In the ethylene glycol water injection step (S110), ethylene glycol water may be injected into the internal space 110b of the chamber through the ethylene glycol water injection unit 114.

At this time, the concentric multi-tube cryogenic vaporizer 100 is preferably provided with a means for injecting ethylene glycol water into the ethylene glycol water injection unit 114.

In the liquefied gas injection step (S120), the liquefied gas may be injected into the concentric multiple pipe 111 through the liquefied gas injection unit 112, and more specifically, may be injected into the inner portion 111a of the concentric multiple pipe.

At this time, the concentric multi-tube cryogenic vaporizer 100 is preferably provided with a means for injecting the liquefied gas into the liquefied gas injection unit 112.

In addition, the ethylene glycol water injection step (S110) and the liquefied gas injection step (S120) may be performed with a time difference, but may be performed simultaneously to shorten the process time.

In the liquefied gas flow step (S130), the liquefied gas flows from the inner portion 111a of the concentric multi-pipe through the first, second, and third spiral vanes 116a, 116b, and 116c to a plurality of inner walls 111b and the plurality of inner walls ( It can flow from 111b) toward the outer portion 111c of the concentric multi-pipe.

In the heat transfer step (S140), the heat of the ethylene glycol water injected into the inner space (110b) of the chamber is transferred from the outer portion (111c) of the concentric multi-pipe through the first, second, and third spiral vanes (116a, 116b, and 116c). It may be transmitted from a plurality of inner walls 111b to the inner portion 111a of the concentric multi-tube.

At this time, the liquefied gas flow step (S130) and the heat transfer step (S140) are preferably performed simultaneously for vaporization of the liquefied gas in the concentric multi-tube (111).

In the liquefied gas vaporization and concentric multi-tube temperature raising step (S150), the liquefied gas flows from the inner part (111a) of the concentric multi-tube towards the outer part (111c) while the first, second, and third spiral vanes (116a, 116b, 116c) ) is heated by the heat of the delivered ethylene glycol water and is vaporized into vaporized gas. As the temperature of the outer portion (111c) of the concentric multi-tube increases due to vaporization of the liquefied gas, the ethylene injected into the inner space (111b) of the chamber Freezing of glycol water can be minimized.

A detailed description of preferred embodiments of the invention disclosed above is provided to enable any person skilled in the art to make or practice the invention. Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use each configuration described in the above-described embodiments by combining them with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the technical spirit and essential features of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit reference relationship in the patent claims can be combined to form an embodiment or included as a new claim through amendment after filing.

100: concentric multi-tube cryogenic vaporizer, 110: chamber,
110a: inner wall of the chamber, 110b: inner space of the chamber,
111: concentric multiple pipe, 111a: inner part of concentric multiple pipe,
111b: inner wall, 111c: outer part of concentric multi-tube,
112: liquefied gas injection part, 113: vaporized gas outlet part,
114: ethylene glycol water inlet, 115: ethylene glycol water outlet,
116: helical vane, 116a: first helical vane,
116b: second helical vane, 116c: third helical vane.

Claims (10)

In the concentric multi-tube cryogenic vaporizer,
A chamber each provided with a liquefied gas injection part for injecting liquefied gas, a vaporized gas outlet for discharging the vaporized gas to the outside, and an ethylene glycol water injection portion for injecting the fruit, ethylene glycol water, into the internal space;
A concentric multi-tube pipe disposed in the inner space of the chamber in a coil shape and having an inner part in communication with the liquefied gas injection part, a plurality of inner walls, and an outer part facing the inner wall of the chamber; and
It is disposed in the inner space of the concentric multiple pipe in a form that connects the inner portion, the plurality of inner walls, and the outer portion of the concentric multiple pipe, so that the liquefied gas injected from the liquefied gas injection portion flows from the inner portion to the outer portion, and ethylene glycol It includes a plurality of spiral vanes that transfer the heat of the water from the outer portion of the concentric multiple pipe, which is in contact with the ethylene glycol water, to the inner portion of the concentric multiple pipe,
The concentric multi-tube cryogenic vaporizer,
The liquefied gas injected into the concentric multiple pipe is heated by the heat of the ethylene glycol water received by the plurality of spiral vanes and is vaporized into a vaporized gas, and the temperature of the outer portion of the concentric multiple pipe is increased by vaporization of the liquefied gas. Accordingly, freezing of ethylene glycol water injected into the inner space of the chamber is minimized,
The ethylene glycol water,
The ratio of ethylene glycol to water is 50:50 and the freezing point is -34 ℃, or the ratio of ethylene glycol to water is 60:40 and the freezing point is -48 ℃,
The chamber is,
The ethylene glycol water injection unit is provided in a form that surrounds a portion of the outer peripheral surface of the liquefied gas injection unit, so that the liquefied gas injection unit and the ethylene glycol water injection unit are implemented as concentric pipes, so that the liquefied gas injection unit and the ethylene glycol water injection unit Heat exchange between the liquefied gas and ethylene glycol water prevents the temperature of the liquefied gas from increasing and the ethylene glycol water from freezing.
An ethylene glycol water outlet is provided to transfer heat to the liquefied gas injected into the concentric multi-tube through the liquefied gas injection unit and to outflow the ethylene glycol water that is in contact with the outer portion of the concentric multi-tube, the temperature of which is raised by the vaporized gas. It is equipped,
The ethylene glycol water outlet is provided in a form that surrounds a portion of the outer peripheral surface of the vaporized gas outlet, so that the vaporized gas outlet and the ethylene glycol water outlet are implemented as concentric pipes, so that the vaporized gas outlet and the ethylene glycol water outlet are A concentric multi-tube cryogenic vaporizer for preventing fruit freezing, characterized in that heat exchange between vaporized gas and ethylene glycol water is performed to minimize freezing of the ethylene glycol water. delete According to claim 1,
The liquefied gas,
A concentric multi-tube cryogenic vaporizer for preventing fruit freezing, characterized in that it is liquid nitrogen or liquid hydrogen at -243.15 to -203.15 ℃. delete delete According to claim 1,
The plurality of spiral vanes are,
a plurality of first spiral vanes connecting the outer portion of the concentric multiple pipe and an inner wall closer to the inner portion of the concentric multiple pipe than the outer portion to transfer heat of ethylene glycol water to the inner wall;
A plurality of agents that connect the inner wall of the concentric multiple pipe that receives the heat of the ethylene glycol water through the first spiral vane and the inner wall that is closer to the inner side of the concentric multiple pipe than the inner wall to transfer the heat of the ethylene glycol water to the inner wall. 2 spiral vanes; and
A third spiral vane is installed on the inner side of the concentric multiple pipe adjacent to the inner wall of the concentric multiple pipe that receives the heat of the ethylene glycol water through the second spiral vane and transmits the heat of the ethylene glycol water to the inner side of the concentric multiple pipe. A concentric multi-tube cryogenic vaporizer for preventing fruit freezing, comprising: According to claim 6,
The plurality of first and second spiral vanes are,
In order to prevent the liquefied gas flowing into the inner wall and outer portion of the concentric multiple pipe from flowing back into the inner portion of the concentric multiple pipe, the horizontal direction is equal to the diameter between the outer portion and inner wall of the concentric multiple pipe and the inner wall of the concentric multiple pipe. A concentric multi-tube cryogenic vaporizer for preventing fruit freezing, characterized in that the length of the vane is formed. According to claim 6,
The third helical vane is,
In order to prevent the inner portion of the concentric multiple pipe from being blocked by interfering with the flow of liquefied gas injected into the inner portion of the concentric multiple pipe, the length of the vane in the horizontal direction is formed shorter than the radius of the inner portion of the concentric multiple pipe. Features a concentric multi-tube cryogenic vaporizer to prevent fruit freezing. According to claim 1,
The concentric multi-pipe and spiral vane are,
A concentric multi-tube cryogenic vaporizer for preventing fruit freezing, comprising a rotating body based on the ethylene glycol water injection unit to expand the heat transfer area of the liquefied gas. In the method of preventing fruit freezing using a concentric multi-tube cryogenic vaporizer,
a) injecting the fruit, ethylene glycol water, into the inner space of the chamber through the ethylene glycol water injection part of the chamber;
b) injecting liquefied gas into the inner part of the concentric multi-tube through the liquefied gas injection part of the chamber;
c) flowing the liquefied gas injected into the inner portion of the concentric multiple pipe through a plurality of spiral vanes from the inner portion of the concentric multiple pipe toward a plurality of inner walls and from the plurality of inner walls toward an outer portion of the concentric multiple pipe;
d) transferring the heat of ethylene glycol water injected into the inner space of the chamber from the outer portion of the concentric multiple pipe to a plurality of inner walls and from the plurality of inner walls to the inner portion of the concentric multiple pipe through the plurality of spiral vanes;
e) While the liquefied gas flows from the inner part of the concentric multiple tube toward the outer part, the plurality of spiral vanes are heated by the heat of the ethylene glycol water delivered and are vaporized into vaporized gas, and the concentric multiple tube is vaporized by vaporization of the liquefied gas. As the temperature of the outer part of the tube increases, freezing of the ethylene glycol water injected into the inner space of the chamber is minimized,
The ethylene glycol water,
The ratio of ethylene glycol to water is 50:50 and the freezing point is -34 ℃, or the ratio of ethylene glycol to water is 60:40 and the freezing point is -48 ℃,
The chamber is,
The ethylene glycol water injection unit is provided in a form that surrounds a portion of the outer peripheral surface of the liquefied gas injection unit, so that the liquefied gas injection unit and the ethylene glycol water injection unit are implemented as concentric pipes, so that the liquefied gas injection unit and the ethylene glycol water injection unit Heat exchange between the liquefied gas and ethylene glycol water prevents the temperature of the liquefied gas from increasing and the ethylene glycol water from freezing.
An ethylene glycol water outlet is provided to transfer heat to the liquefied gas injected into the concentric multi-tube through the liquefied gas injection unit and to outflow the ethylene glycol water that is in contact with the outer portion of the concentric multi-tube, the temperature of which is raised by the vaporized gas. It is equipped,
The ethylene glycol water outlet is provided in a form that surrounds a portion of the outer peripheral surface of the vaporized gas outlet, so that the vaporized gas outlet and the ethylene glycol water outlet are implemented as concentric pipes, so that vaporization occurs in the vaporized gas outlet and the ethylene glycol water outlet. A method for preventing fruit freezing, characterized in that heat exchange between gas and ethylene glycol water occurs to minimize freezing of the ethylene glycol water.

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