CN215447112U

CN215447112U - Novel hydrogen liquefaction precooling heat exchanger

Info

Publication number: CN215447112U
Application number: CN202023237325.1U
Authority: CN
Inventors: 陈慧超
Original assignee: Shanghai Lanze Energy Technology Co ltd
Current assignee: Shanghai Lanze Energy Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2022-01-07
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a novel hydrogen liquefaction precooling heat exchanger which comprises a heat exchange box on a heat exchanger base, wherein a first cooling pipe and a second cooling pipe are arranged in the heat exchange box, a liquid nitrogen injection port and a liquid nitrogen discharge port are arranged on the heat exchange box, the air inlet end of the first cooling pipe and the air outlet end of the second cooling pipe are in sealed sliding connection with the heat exchange box, the air outlet end of the first cooling pipe is in sealed sliding connection with the air inlet end of the second cooling pipe, and four serpentine cooling pipes are connected to the first cooling pipe and the second cooling pipe in series. The hydrogen pre-cooling device is reasonable in structure, and can improve the heat exchange effect of the heat exchanger and improve the efficiency of hydrogen pre-cooling.

Description

Novel hydrogen liquefaction precooling heat exchanger

Technical Field

The utility model relates to the technical field of liquefied hydrogen production, in particular to a novel hydrogen liquefaction precooling heat exchanger.

Background

The hydrogen energy is a clean and efficient secondary energy with expected value due to the special characteristics of wide source, storage, regeneration, high combustion heat value, electric combustibility and zero pollution, becomes an important choice for international energy revolution, and is regarded as the clean energy with the most development potential in the 21 st century.

Hydrogen can liquefy when cooling hydrogen to-253 ℃, but hydrogen liquefaction is with high costs, energy loss is big, at present mostly carry out the precooling with hydrogen earlier, then carry out ultimate cooling through the hydrogen behind the cold box to the precooling, often cool off in the middle of the precooling process in the middle of the liquid nitrogen is placed to the pipeline that contains hydrogen in inside, but present precooling heat exchange efficiency is lower, caused the waste to a certain extent, to above-mentioned condition, then need a novel hydrogen liquefaction precooling heat exchanger.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a novel hydrogen liquefaction precooling heat exchanger which can improve the heat exchange effect of the heat exchanger and improve the efficiency of hydrogen precooling.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a novel hydrogen liquefaction precooling heat exchanger comprises a heat exchange box on a heat exchanger base, wherein a first cooling pipe and a second cooling pipe are arranged in the heat exchange box, the heat exchange box is provided with a liquid nitrogen inlet and a liquid nitrogen outlet, the air inlet end of the first cooling pipe and the air outlet end of the second cooling pipe are connected with the heat exchange box in a sealing and sliding way, the air outlet end of the first cooling pipe is connected with the air inlet end of the second cooling pipe in a sealing and sliding way, the first cooling pipe and the second cooling pipe are connected with four serpentine cooling pipes in series, a driving box is arranged between the first cooling pipe and the second cooling pipe in the heat exchange box, the first cooling pipe and the second cooling pipe are fixedly connected with driving rods which respectively penetrate through the driving box and are in sealing sliding connection with the driving box, the heat exchange box is characterized in that a reciprocating mechanism for driving the two driving rods to reciprocate is arranged in the driving box, and a power mechanism for enabling the reciprocating mechanism to effectively operate is arranged on the heat exchange box in a matched mode.

Preferably, the reciprocating mechanism comprises two short shafts which are rotatably connected in a driving box, the tail ends of the two short shafts are fixedly connected with driving discs, one sides of the two driving discs are respectively provided with a driving ring, the two driving discs are respectively provided with driving columns matched with the two driving rings in a matching manner, and the side walls of the two driving rings are respectively fixedly connected with the two driving rods.

Preferably, the power mechanism comprises a motor fixedly connected with the upper end of the heat exchange box, the tail end of an output shaft of the motor penetrates through the heat exchange box and the driving box and is fixedly connected with a first gear, and two second gears respectively meshed with the first gear are respectively and fixedly connected to the two short shafts.

Preferably, a cold box is arranged on one side, located on the heat exchange box, of the base, an air inlet end and an air outlet end are arranged on the cold box, and the air outlet end of the second cooling pipe is connected with the air inlet end of the cold box in a sealing and sliding mode.

Preferably, the side walls of the first cooling pipe and the second cooling pipe are fixedly connected with guide rods, and the tail ends of the two guide rods penetrate through the heat exchange box and are in sealing sliding connection with the heat exchange box.

Preferably, the heat exchange box inner layer, the driving box outer layer, the two guide rods, the two driving rods, the plurality of cooling coils, the first cooling pipe and the second cooling pipe are made of stainless steel.

Compared with the prior art, the utility model has the beneficial effects that:

1. the liquid nitrogen that is equipped with in the heat transfer case can carry out the precooling to the hydrogen in first cooling tube and the second cooling tube for hydrogen that enters into in the cold box reduces certain temperature, improves the efficiency of cold box liquefied hydrogen, and four snakelike cooling tubes can increase the area of contact with the liquid nitrogen, have improved the precooling effect of hydrogen greatly.

2. The two driving rods drive the first cooling pipe and the second cooling pipe to continuously move in a reciprocating mode, the four snake-shaped cooling pipes can be continuously moved in the heat exchange box, liquid nitrogen in the heat exchange box can be driven to flow, and the pre-cooling effect of hydrogen can be further enhanced.

Drawings

Fig. 1 is a schematic structural diagram of a novel hydrogen liquefaction precooling heat exchanger provided by the utility model;

fig. 2 is an enlarged schematic structural diagram of a position a of the novel hydrogen liquefaction precooling heat exchanger provided by the utility model;

fig. 3 is a schematic structural diagram of a reciprocating mechanism of the novel hydrogen liquefaction precooling heat exchanger provided by the utility model.

In the figure: the device comprises a base 1, a heat exchange box 2, a motor 3, a first cooling pipe 4, a second cooling pipe 5, a serpentine cooling pipe 6, a cold box 7, a driving box 8, a second gear 9, a first gear 10, a driving disc 11, a driving ring 12, a driving column 13 and a driving rod 14.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1-3, a novel hydrogen liquefaction precooling heat exchanger comprises a heat exchange box 2 on a heat exchanger base 1, a first cooling tube 4 and a second cooling tube 5 are arranged in the heat exchange box 2, a liquid nitrogen filling port and a liquid nitrogen discharging port are arranged on the heat exchange box 2, an air inlet end of the first cooling tube 4 and an air outlet end of the second cooling tube 5 are in sealing sliding connection with the heat exchange box 2, an air outlet end of the first cooling tube 4 and an air inlet end of the second cooling tube 5 are in sealing sliding connection, four serpentine cooling tubes 6 are connected in series on the first cooling tube 4 and the second cooling tube 5, the serpentine cooling tubes 6 are arranged to increase the contact area between hydrogen and liquid nitrogen in a pipeline and further improve the refrigeration effect, a driving box 8 is arranged between the first cooling tube 4 and the second cooling tube 5 in the heat exchange box 2, driving rods 14 respectively penetrating through the driving box 8 and in sealing sliding connection with the first cooling tube 4 and the second cooling tube 5 are fixedly connected with the driving box, be equipped with the reciprocating mechanism of two actuating levers 14 reciprocating motion of drive in the drive case 8, reciprocating mechanism includes two minor axiss of 8 internal rotation connections of drive case, two equal fixedly connected with drive disc 11 in minor axis end, two drive disc 11 one sides all are equipped with drive ring 12, it is equipped with respectively on two drive disc 11 with two drive ring 12 matched with drive post 13, two drive ring 12 lateral walls respectively with two actuating lever 14 fixed connection, the equal fixedly connected with guide bar of first cooling tube 4 and 5 lateral walls of second cooling tube, two guide bar ends all run through heat transfer case 2 and sealed sliding connection with it, two actuating levers 14 can drive first cooling tube 4 and second cooling tube 5 respectively, can make the liquid nitrogen in the heat transfer case 2 flow, can further strengthen the cooling effect of liquid nitrogen to hydrogen.

The last supporting power unit that is equipped with of heat transfer case 2 and makes reciprocating mechanism effectively move, power unit includes heat transfer case 2 upper end fixed connection's motor 3, motor 3 output shaft end runs through heat transfer case 2 and drive case 8 and the first gear of fixedly connected with 10, respectively two fixedly connected with respectively on two minor axes with the second gear 9 of first gear 10 engaged with, two drive disc 11 of drive below that two second gears 9 can be continuous rotate, two actuating lever 14 stable effectual removal have finally been realized.

Lie in heat transfer case 2 one side on base 1 and be equipped with cold box 7, be equipped with the inlet end on cold box 7 and give vent to anger the end, the sealed sliding connection of second cooling tube 5 end and cold box 7 inlet end of giving vent to anger, heat transfer case 2 inlayers, 8 skins of drive box, two guide bars, two actuating levers 14, a plurality of coiled pipes 6, first cooling tube 4 and 5 materials of second cooling tube are the stainless steel, carry out final cooling liquefaction to the hydrogen after the precooling through cold box 7, finally reach liquefied hydrogen's purpose.

When the hydrogen pre-cooling device is used, hydrogen to be cooled flows through the first cooling pipe 4 and the second cooling pipe 5 to finally reach the inside of the cold box 7 for refrigeration and liquefaction, the four serpentine cooling pipes 6 are connected in series in the heat exchange box 2 in the first cooling pipe 4 and the second cooling pipe 5, the contact area of the hydrogen and liquid nitrogen can be further enlarged, and the pre-cooling effect of the hydrogen is improved.

At this moment, the motor 3 is started, the motor 3 drives the two second gears 9 to continuously rotate through the driving shaft 10, so that the continuous rotation of the two driving disks 11 at the lower end is realized, the driving columns 13 and the two driving rings 12 which are arranged on the two driving disks 11 are mutually matched, so that the continuous reciprocating motion of the two driving rods 14 can be realized in the continuous rotating process of the driving disks 11, the first cooling pipe 4 and the second cooling pipe 5 are further driven to continuously reciprocate in the heat exchange box 2, the second cooling pipe 5 and the four serpentine cooling pipes 6 are contacted with flowing liquid nitrogen, the pre-cooling effect of hydrogen is further improved, the finally pre-cooled hydrogen enters the cold box 7 to be further liquefied, and the purpose of hydrogen liquefaction is finally realized.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a novel hydrogen liquefaction precooling heat exchanger, includes heat transfer case (2) on heat transfer case base (1), its characterized in that, be equipped with first cooling tube (4) and second cooling tube (5) in heat transfer case (2), be equipped with liquid nitrogen filling opening and liquid nitrogen discharge port on heat transfer case (2), first cooling tube (4) inlet end and second cooling tube (5) give vent to anger the end and heat transfer case (2) sealed sliding connection, first cooling tube (4) give vent to anger the end and second cooling tube (5) inlet end sealed sliding connection, it has four snakelike cooling tube (6) to concatenate on first cooling tube (4) and second cooling tube (5), be located between first cooling tube (4) and second cooling tube (5) in heat transfer case (2) and be equipped with drive case (8), equal fixedly connected with runs through drive case (8) respectively and with its sealed sliding connection's drive on first cooling tube (4) and second cooling tube (5) The heat exchange box comprises a rod (14), wherein a reciprocating mechanism for driving two driving rods (14) to reciprocate is arranged in the driving box (8), and a power mechanism for enabling the reciprocating mechanism to effectively operate is arranged on the heat exchange box (2) in a matched mode.

2. The novel hydrogen liquefaction precooling heat exchanger according to claim 1, wherein the reciprocating mechanism includes two short shafts rotationally connected in a driving box (8), the two short shaft ends are both fixedly connected with driving discs (11), one side of each of the two driving discs (11) is provided with a driving ring (12), the two driving discs (11) are respectively provided with driving columns (13) matched with the two driving rings (12), and the side walls of the two driving rings (12) are respectively fixedly connected with the two driving rods (14).

3. The novel hydrogen liquefaction precooling heat exchanger according to claim 2, wherein the power mechanism comprises a motor (3) fixedly connected to the upper end of the heat exchange box (2), the tail end of the output shaft of the motor (3) penetrates through the heat exchange box (2) and the driving box (8) and is fixedly connected with a first gear (10), and two second gears (9) respectively engaged with the first gear (10) are respectively and fixedly connected to the two stub shafts.

4. The novel hydrogen liquefaction precooling heat exchanger according to claim 1, wherein a cold box (7) is arranged on the base (1) on one side of the heat exchange box (2), an air inlet end and an air outlet end are arranged on the cold box (7), and the air outlet end of the second cooling pipe (5) is hermetically and slidably connected with the air inlet end of the cold box (7).

5. The novel hydrogen liquefaction precooling heat exchanger according to claim 1, wherein guide rods are fixedly connected to the side walls of the first cooling tube (4) and the second cooling tube (5), and the tail ends of the two guide rods penetrate through the heat exchange box (2) and are in sliding connection with the heat exchange box in a sealing manner.

6. The novel hydrogen liquefaction precooling heat exchanger according to claim 5, characterized in that the materials of the inner layer of the heat exchange box (2), the outer layer of the driving box (8), the two guide rods, the two driving rods (14), the plurality of serpentine cooling pipes (6), the first cooling pipe (4) and the second cooling pipe (5) are stainless steel.