Liquid oxygen gasification device with high gasification efficiency

Abstract

The utility model discloses a liquid oxygen gasification device with high gasification efficiency, and belongs to the technical field of liquid oxygen gasification. The heat exchanger comprises a base, a heat exchange center pipe, a star-shaped heat exchange fin plate assembly and an air supply mechanism. The star-shaped heat exchange fin plate assembly comprises outer sleeves, first fins and second fins, the outer sleeves are fixedly arranged on the corresponding vertical pipelines in a sleeving mode, a plurality of sets of first fins and a plurality of sets of second fins are arranged on the peripheries of the outer sleeves, and the first fins and the second fins are annularly and evenly distributed in a staggered mode relative to the longitudinal center axis of the outer sleeves; the side, away from the outer sleeve, of the first fin is connected with an air supply mechanism. The heat exchanger can reduce air obstruction between the first fin and the second fin which are adjacent to each other, so that air flow is accelerated, heat exchange efficiency is improved, cooled cold air in gaps among the outer sleeve, the first fin and the second fin can be blown away quickly and uniformly, air circulation is accelerated, and heat exchange efficiency is improved. And the outer walls of the outer sleeve, the first fin and the second fin are prevented from being frozen.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid oxygen gasification, in particular to a liquid oxygen gasification device with high gasification efficiency. Background Art

[0002] At present, liquid oxygen gasification equipment is widely used in various fields. Krypton and xenon mainly exist in liquid oxygen. When extracting krypton and xenon from liquid oxygen, firstly, krypton-xenon-depleted liquid oxygen is obtained from the air separation equipment, and then the krypton and xenon contained in the liquid oxygen are further concentrated to obtain a krypton-xenon mixture. Finally, pure krypton and pure xenon are obtained by further separation and refining of the mixture.

[0003] Existing liquid oxygen gasification devices generally use air-temperature low-pressure vaporizers. Air-temperature vaporizers are heat exchange equipment that uses natural convection of air to heat low-temperature liquid oxygen to vaporize it into room-temperature gas. In order to increase the heat exchange area on the air side, star-shaped heat exchange fins are installed on the outside of the heat exchange tubes. The heat exchange fins obtain more heat energy from the atmosphere in the smallest possible space. The currently commonly used air-temperature vaporizers often cool down the air around the device due to the heat absorption and vaporization of liquid oxygen during normal use, thereby causing frost on the outer walls of the central tube and the heat exchange fins. The occurrence of this phenomenon will greatly reduce the gasification efficiency, and the frosting phenomenon will further spread during continuous gasification, thereby causing fin icing and even pipe freezing. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid oxygen gasification device with high gasification efficiency, aiming to at least solve the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solutions adopted by the utility model are as follows:

[0005] A liquid oxygen gasification device with high gasification efficiency comprises a base, on which a heat exchange center tube is fixedly arranged, the heat exchange center tube has a plurality of vertical pipes, and a star-shaped heat exchange fin assembly is arranged on each of the plurality of vertical pipes, the star-shaped heat exchange fin assembly comprises an outer sleeve, a No. 1 fin and a No. 2 fin, the outer sleeve is fixedly sleeved on the corresponding vertical pipe, a plurality of groups of the No. 1 fins and a plurality of groups of the No. 2 fins are arranged on the outer periphery of the outer sleeve, the No. 1 fins and the No. 2 fins are evenly and staggeredly distributed in a ring shape about the longitudinal center axis of the outer sleeve, an air supply mechanism is connected to the side of the No. 1 fin away from the outer sleeve, and the air supply mechanism is used to blow air into the gap between the adjacent No. 1 fins and the No. 2 fins.

[0006] As a further solution of the utility model: the air supply mechanism includes a pressure equalizing chamber, a nozzle, an air storage ring and a blower, each of the No. 1 fins is provided with the pressure equalizing chamber on the side away from the outer sleeve, the pressure equalizing chamber is evenly provided with two rows of nozzles on the side relative to the outer sleeve, the two rows of nozzles are symmetrically arranged on both sides of the No. 1 fin, the pressure equalizing chamber is connected to the air outlet of the air storage ring through an air supply pipe, and the air inlet of the air storage ring is connected to the blower through an air supply pipe.

[0007] As a further solution of the utility model: an air storage ring is arranged under each vertical pipeline, and the air storage ring is fixedly installed at the bottom of the base.

[0008] As a further solution of the utility model: the length of the No. 1 fin is twice the length of the No. 2 fin.

[0009] As a further solution of the utility model: the number of the No. 1 fin and the No. 2 fin are both four.

[0010] As a further solution of the utility model: the liquid inlet port of the heat exchange central tube is connected to a high-pressure elbow, and a stop valve is provided on the high-pressure elbow.

[0011] As a further solution of the utility model: universal wheels are respectively provided at the four corners of the bottom of the base.

[0012] The utility model has the following beneficial effects:

[0013] The utility model forms a radial structure by evenly distributing the No. 1 fin and the No. 2 fin in a ring shape on the longitudinal center axis of the heat exchange center tube, thereby increasing the heat exchange area on the air side; and the length of the No. 1 fin is twice the length of the No. 2 fin, which can reduce the air barrier between the adjacent No. 1 fin and No. 2 fin, thereby accelerating the air flow and improving the heat exchange efficiency;

[0014] The utility model is also provided with an air supply mechanism, and a blower blows high-pressure air into the air storage ring, and the air in the air storage ring is transported to each pressure equalizing chamber. After the air pressure in the pressure equalizing chamber reaches the critical point of the jet head, it is ejected from the jet head at high speed, and the cooled cold air in the gap between the outer sleeve, the first fin and the second fin is blown away quickly and evenly, thereby accelerating air circulation and preventing the outer walls of the outer sleeve, the first fin and the second fin from freezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a front view schematic diagram of a liquid oxygen gasification device with high gasification efficiency of the utility model;

[0017] Figure 2 This is a bottom view schematic diagram of the star-shaped heat exchange fin assembly of the utility model;

[0018] Figure 3 It is a top view schematic diagram of the combined structure of the star-shaped heat exchange fin assembly and the gas storage ring of the utility model;

[0019] Figure 4 This is a top view schematic diagram of the gas storage ring of the utility model;

[0020] Figure 5 It is a bottom view schematic diagram of the gas storage ring of the utility model.

[0021] In the figure: 1. base; 2. heat exchange center tube; 21. vertical pipeline; 3. star-shaped heat exchange fin assembly; 31. outer sleeve; 32. fin No. 1; 33. fin No. 2; 4. air supply mechanism; 41. pressure equalizing chamber; 42. nozzle; 43. air storage ring; 44. blower; 45. air supply pipe; 5. high-pressure elbow; 6. stop valve; 7. gap; 8. universal wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, it should not be understood as a limitation on the present invention.

[0024] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] Embodiment 1

[0026] See also Figure 1 , Figure 2As shown, the present embodiment provides a liquid oxygen gasification device with high gasification efficiency, comprising a base 1, a heat exchange central tube 2, a star-shaped heat exchange fin assembly 3 and an air supply mechanism 4. Universal wheels 8 are provided at the four corners of the bottom of the base 1 to facilitate the movement of the device as a whole. The heat exchange central tube 2 is fixedly provided on the base 1. The heat exchange central tube 2 is an S-shaped structure. The heat exchange central tube 2 has a plurality of vertical pipes 21. In the present embodiment, there are four vertical pipes 21. The heat exchange central tube 2 has a liquid inlet port and an air outlet port. The liquid inlet port is connected to a high-pressure elbow 5. The high-pressure elbow 5 is provided with a stop valve 6. The plurality of vertical pipes 21 are provided with a star-shaped heat exchange fin assembly 3.

[0027] The star-shaped heat exchange fin assembly 3 includes an outer sleeve 31, a No. 1 fin 32 and a No. 2 fin 33. The outer sleeve 31 is fixedly sleeved on the corresponding vertical pipe 21. The outer sleeve 31 is made of a material with strong thermal conductivity. The inner diameter of the outer sleeve 31 is equal to the outer diameter of the vertical pipe 21. After assembly, the inner wall of the outer sleeve 31 is closely attached to the outer wall of the vertical pipe 21. A plurality of groups of No. 1 fins 32 and a plurality of groups of No. 2 fins 33 are arranged on the outer periphery of the outer sleeve 31. The No. 1 fins 32 and the No. 2 fins are evenly staggered and distributed in a circular shape about the longitudinal center axis of the outer sleeve 31, forming a radial structure, thereby increasing the heat exchange area on the air side. In the present embodiment, there are four fins No. 1 32 and four fins No. 2 33, and the length of the fin No. 1 32 is twice the length of the fin No. 2 33. The fins No. 1 32 and the fins No. 2 33 arranged in this structure can reduce the air barrier between adjacent fins No. 1 32 and fins No. 2 33, thereby accelerating the air flow and improving the heat exchange efficiency.

[0028] The side of the No. 1 fin 32 away from the outer sleeve 31 is connected to an air supply mechanism 4, which can blow air into the gap 7 between the adjacent No. 1 fin 32 and No. 2 fin 33, and can quickly and evenly blow away the cooled cold air in the gap 7 between the outer sleeve 31, the No. 1 fin 32 and the No. 2 fin 33, thereby accelerating air circulation, avoiding ice on the outer walls of the outer sleeve 31, the No. 1 fin 32 and the No. 2 fin 33, and greatly improving work efficiency.

[0029] Embodiment 2

[0030] See also Figure 1-4 As shown, based on the first embodiment, this embodiment provides a liquid oxygen gasification device with high gasification efficiency, including a base 1, a heat exchange center tube 2, a star-shaped heat exchange fin assembly 3 and an air supply mechanism 4.

[0031] The air supply mechanism 4 includes a pressure equalizing chamber 41, an air jet 42, an air storage ring 43 and a blower 44. Figure 2As shown, each No. 1 fin 32 is provided with a pressure equalizing chamber 41 on one side away from the outer sleeve 31, and the pressure equalizing chamber 41 is evenly provided with two rows of nozzles 42 on one side of the outer sleeve 31. The two rows of nozzles 42 are symmetrically arranged on both sides of the No. 1 fin 32, and the two rows of nozzles 42 can simultaneously blow air to the gaps 7 on both sides of the No. 1 fin 32. Figure 1 As shown, the pressure equalizing chamber 41 is connected to the air outlet of the air storage ring 43 through the air delivery pipe 45, and the air inlet of the air storage ring 43 is connected to the blower 44 through the air delivery pipe 45. It can be understood that, please refer to Figure 1 As shown, an air storage ring 43 is provided below each vertical pipe 21, and the air storage ring 43 is fixedly installed at the bottom of the base 1. The blower 44 blows high-pressure air into the air storage ring 43 through the air delivery pipe 45, and the air in the air storage ring 43 is delivered to each pressure equalizing chamber 41 through the air delivery pipe 45. After the air pressure in the pressure equalizing chamber 41 reaches the critical point of the jet head 42, it is ejected from the jet head 42 at a high speed, and the cooled cold air in the gap 7 between the outer sleeve 31, the first fin 32 and the second fin 33 is blown away quickly and evenly, thereby accelerating air circulation.

[0032] The working principle of this utility model:

[0033] Connect the output pipe of the liquid oxygen tank to the liquid inlet port of the heat exchange center tube 2, then open the stop valve 6, and the liquid oxygen enters the heat exchange center tube 2 through the high-pressure elbow 5, and automatically exchanges heat with the No. 1 fin 32 and the No. 2 fin 33 by using the flow of external air. Since the No. 1 fin 32 and the No. 2 fin 33 are evenly staggered in a ring shape about the longitudinal center axis of the heat exchange center tube 2, a radial structure is formed, which increases the heat exchange area on the air side. Since the length of the No. 1 fin 32 is twice the length of the No. 2 fin 33, the air barrier between the adjacent No. 1 fin 32 and the No. 2 fin 33 can be reduced, thereby accelerating the air flow and improving the heat exchange efficiency. At the same time, the blower 44 blows high-pressure air into the air storage ring 43 through the air supply pipe 45. The air in the air storage ring 43 is transported to each pressure equalizing chamber 41 through the air supply pipe 45. After the air pressure in the pressure equalizing chamber 41 reaches the critical point of the nozzle 42, it is ejected from the nozzle 42 at high speed, quickly and evenly blowing away the cooled cold air in the gap 7 between the outer sleeve 31, the first fin 32 and the second fin 33, thereby accelerating air circulation and preventing the outer walls of the outer sleeve 31, the first fin 32 and the second fin 33 from freezing.

[0034] The above detailed description of the preferred embodiments of the utility model should not be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A liquid oxygen gasification device with high gasification efficiency, comprising a base (1), on which a heat exchange central tube (2) is fixedly arranged, wherein the heat exchange central tube (2) has a plurality of vertical pipes (21), and is characterized in that: A plurality of the vertical pipes (21) are each provided with a star-shaped heat exchange fin assembly (3), the star-shaped heat exchange fin assembly (3) comprising an outer sleeve (31), a first fin (32) and a second fin (33), the outer sleeve (31) being fixedly sleeved on the corresponding vertical pipe (21), a plurality of groups of the first fin (32) and a plurality of groups of the second fin (33) being provided on the outer periphery of the outer sleeve (31), the first fin (32) and the second fin (33) being uniformly and staggeredly distributed in a circular shape about the longitudinal center axis of the outer sleeve (31), the side of the first fin (32) away from the outer sleeve (31) being connected with an air supply mechanism (4), the air supply mechanism (4) being used for blowing air into the gap (7) between the adjacent first fin (32) and the second fin.

2. A liquid oxygen gasification device with high gasification efficiency according to claim 1, characterized in that: The air supply mechanism (4) comprises a pressure equalizing chamber (41), an air jet (42), an air storage ring (43) and a blower (44); the pressure equalizing chamber (41) is provided on a side of each of the first fins (32) away from the outer sleeve (31); two rows of air jets (42) are evenly arranged on the pressure equalizing chamber (41) on a side relative to the outer sleeve (31); the two rows of air jets (42) are symmetrically arranged on both sides of the first fin (32); the pressure equalizing chamber (41) is connected to an air outlet of the air storage ring (43) through an air supply pipe (45); and the air inlet of the air storage ring (43) is connected to the blower (44) through an air supply pipe (45).

3. A liquid oxygen gasification device with high gasification efficiency according to claim 2, characterized in that: An air storage ring (43) is provided below each of the vertical pipes (21), and the air storage ring (43) is fixedly mounted on the bottom of the base (1).

4. The liquid oxygen gasification device with high gasification efficiency according to claim 1 is characterized in that: The length of the first fin (32) is twice the length of the second fin (33).

5. A liquid oxygen gasification device with high gasification efficiency according to claim 4, characterized in that: There are four fins No. 1 (32) and four fins No. 2 (33).

6. The liquid oxygen gasification device with high gasification efficiency according to claim 1 is characterized in that: The liquid inlet port of the heat exchange central pipe (2) is connected to a high-pressure elbow (5), and a stop valve (6) is provided on the high-pressure elbow (5).

7. The liquid oxygen gasification device with high gasification efficiency according to claim 1 is characterized in that: Universal wheels (8) are respectively provided at the four corners of the bottom of the base (1).

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