Liquid nitrogen tank with demisting device

Abstract

The utility model relates to the technical field of liquid nitrogen tanks, in particular to a liquid nitrogen tank with a demisting device, which comprises a tank body, a tank opening is arranged at the top of the tank body, a tank cover is rotatably arranged in the tank opening, and the liquid nitrogen tank further comprises a demisting mechanism which is arranged on the tank body and comprises a first pipeline, a second pipeline and a connecting component. The first pipeline is connected with the second pipeline through a connecting assembly and is used for removing white fog on a tank opening; through the arrangement of the demisting mechanism, when the tank cover is opened, rime fog at the tank opening can be quickly removed through the demisting mechanism without waiting for the rime fog to dissipate automatically, the opening time is shortened, the influence on the liquid nitrogen quality is reduced, the liquid nitrogen quality is stable, and meanwhile, when the rime fog is removed, a user can normally observe and use the liquid nitrogen.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid nitrogen tank technical field, specifically related to a liquid nitrogen tank with demisting device. BACKGROUND

[0002] Liquid nitrogen is a kind of liquid nitrogen, liquid nitrogen has no color, no odor, no corrosive, inert characteristics, is commonly used in industry one kind of refrigerant, along with the continuous development of industrial technology and liquid nitrogen technology, liquid nitrogen plays an indispensable role in various fields, but so far, liquid nitrogen still has many problems in the process of transportation and use.

[0003] The liquid nitrogen tank in the prior art generates a large amount of white mist at the tank opening due to the large temperature difference between the inside and outside when it is opened, which blocks the user's view, affects observation and use, and it usually takes 10-20 minutes for the white mist to dissipate on its own. Liquid nitrogen will react with water and other gases in the air and produce mixing when the liquid nitrogen tank is open for a long time, resulting in a decrease in the purity of liquid nitrogen, thereby affecting the quality and stability of liquid nitrogen, and also having a great impact on the biological samples stored in the tank body. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the above-mentioned insufficient, provide a kind of liquid nitrogen tank with demisting device.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A kind of liquid nitrogen tank with demisting device, including tank body, the top of the tank body is provided with tank mouth, tank mouth is rotationally arranged with tank cover, further including:

[0007] Demisting mechanism is arranged on the tank body, and the demisting mechanism includes first pipeline, second pipeline and connecting assembly, the first pipeline is connected with the second pipeline by the connecting assembly, for removing the white mist on the tank mouth.

[0008] Further, the tank body includes a shell, a thermal insulation layer is arranged in the shell, and the tank mouth is arranged on the shell and connected with the thermal insulation layer.

[0009] Further, the first pipeline is arranged between the shell and the thermal insulation layer, one end of the first pipeline close to the tank top is arranged in the top of the tank body and connected with the connecting assembly, the other end of the first pipeline extends to the bottom of the thermal insulation layer and is connected with the thermal insulation layer.

[0010] Further, the connecting assembly comprises a mounting rack fixedly arranged on the top of the tank body, and a supply pump is arranged on the mounting rack, an output end of the supply pump is connected with the first pipeline, an electromagnetic valve is further arranged on the first pipeline, one end of the electromagnetic valve away from the first pipeline is connected with the second pipeline, one end of the second pipeline away from the electromagnetic valve is connected with the liquid nitrogen supply tank.

[0011] Further, the connecting assembly comprises a gate valve arranged on the first pipeline, one end of the gate valve away from the first pipeline is connected with the second pipeline, the second pipeline is arranged through the tank body and is designed to be spirally wound along the periphery of the heat preservation layer, one end of the second pipeline away from the gate valve is connected with the bottom of the heat preservation layer.

[0012] Further, the liquid nitrogen supply tank is detachably arranged on the side wall of the tank body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a demisting mechanism is arranged, when opening the tank cover, the white mist at the tank mouth can be removed quickly through the demisting mechanism, and it is not necessary to wait for the white mist to disperse by itself, the opening time is reduced, the influence on the quality of liquid nitrogen is reduced, and the stability is reduced, and when the white mist is removed, the user can also normally observe and use. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification provide further understanding of the utility model, and the schematic embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.

[0016] Figure 1 It is the main body structure schematic diagram of the utility model;

[0017] Figure 2 It is the structure schematic diagram of the first embodiment of the utility model;

[0018] Figure 3 It is the structure schematic diagram of the second embodiment of the utility model.

[0019] In the drawing: 1, tank body;11, shell;12, heat preservation layer;2, tank mouth;3, tank cover;4, demisting mechanism;41, first pipeline;42, second pipeline;43, liquid nitrogen supply tank;44, electromagnetic valve;45, mounting rack;46, supply pump;47, gate valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0022] Referring to FIGS. 1 to 3, Figure 1 and Figure 2 As shown in FIGS. 1 to 3, a liquid nitrogen tank with a defogging device includes a tank body 1, a tank opening 2 is arranged at the top of the tank body 1, a tank cover 3 is rotatably arranged in the tank opening 2, universal wheels are arranged at the bottom of the tank body 1, and a brake pedal is further arranged on the universal wheels; wherein the tank body 1 includes a shell 11, a heat preservation layer 12 is arranged in the shell 11, the tank opening 2 is arranged on the shell 11 and connected with the heat preservation layer 12, and the tank body 1 further includes:

[0023] a defogging mechanism 4 arranged on the tank body 1, mainly including a first pipeline 41, a second pipeline 42 and a connecting assembly;

[0024] The first pipeline 41 is arranged between the shell 11 and the heat preservation layer 12, one end of the first pipeline 41 close to the tank top is arranged through the top of the tank body 1 and connected with the connecting assembly, the other end of the first pipeline 41 extends to the bottom of the heat preservation layer 12 and is connected with the heat preservation layer 12, mainly by introducing liquid nitrogen or nitrogen gas into the bottom of the tank body 1 through the first pipeline 41, so that the gas in the tank body 1 rolls and flows upward, and is discharged from the tank opening 2, for removing white mist on the tank opening 2.

[0025] In an embodiment, the connecting assembly includes a mounting bracket 45 fixedly arranged on the top of the tank body 1, and a replenishment pump 46 is arranged on the mounting bracket 45, the output end of the replenishment pump 46 is connected with the first pipeline 41, an electromagnetic valve 44 is further arranged on the first pipeline 41, the end of the electromagnetic valve 44 away from the first pipeline 41 is connected with the second pipeline 42, and the end of the second pipeline 42 away from the electromagnetic valve 44 is connected with a liquid nitrogen replenishment tank 43;

[0026] The liquid nitrogen supply tank 43 contains liquid nitrogen, when the tank cover 3 is opened, the solenoid valve 44 is opened synchronously, at this time, the liquid nitrogen in the liquid nitrogen supply tank 43 will flow into the tank body 1 from the bottom of the tank body 1 through the second pipeline 42 and the first pipeline 41, since the tank body 1 itself contains liquid nitrogen, in this process, the liquid nitrogen in the tank body 1 is constantly bubbling, driving the gas in the tank body 1 to flow upwards, and then dispersing the white mist at the tank opening 2 upwards, realizing the demisting.

[0027] The liquid nitrogen supply tank 43 is detachably arranged on the side wall of the tank body 1.

[0028] In another embodiment, referring to Figure 3 The connecting assembly is a gate valve 47, which is arranged on the first pipeline 41, and the end of the gate valve 47 away from the first pipeline 41 is connected with the second pipeline 42, the second pipeline 42 is arranged in the tank body 1 and is designed to be spirally wound along the periphery of the heat preservation layer 12, and the end of the second pipeline 42 away from the gate valve 47 is connected with the bottom of the heat preservation layer 12.

[0029] The second pipeline 42 is spirally wound on the liquid nitrogen tank heat preservation layer 12 and is connected to the bottom of the liquid nitrogen tank, and one end of the second pipeline 42 is provided with a gate valve 47, since the liquid nitrogen tank contains liquid nitrogen, the pressure at the bottom of the liquid nitrogen tank is greater than that at the upper part, so that the liquid nitrogen gradually moves upwards along the second pipeline 42, and in this process, the liquid nitrogen is vaporized while absorbing heat, generating a thermal siphon effect; when it is necessary to open the liquid nitrogen tank cover 3 for sampling, the gate valve 47 is opened at the same time, at this time, the vaporized gas in the second pipeline 42 enters the first pipeline 41, and is discharged from the outlet of the first pipeline 41 close to the bottom of the liquid nitrogen tank, so that the liquid nitrogen contained in the liquid nitrogen tank is stirred, promoting the white mist at the tank opening 2 to be discharged upwards, and then eliminating the white mist so that the view of the liquid nitrogen tank opening 2 is not blocked, facilitating sampling.

[0030] Compared with the first embodiment, the second embodiment cancels the arrangement of the liquid nitrogen supply tank 43 and the opening of the solenoid valve 44 triggered by power supply, which is more energy-saving and cost-effective, and can also realize the self-demisting function in the case of power failure or without power supply.

[0031] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A liquid nitrogen tank with defogging device, comprising a tank body (1), a tank opening (2) is arranged at the top of the tank body (1), a tank cover (3) is rotatably arranged in the tank opening (2), characterized in that, Also include: The defogging mechanism (4) is arranged on the tank body (1), the defogging mechanism (4) includes first pipeline (41), second pipeline (42) and connecting assembly, the first pipeline (41) is connected with the second pipeline (42) through connecting assembly, for removing the white fog on the tank mouth (2).

2. The liquid nitrogen tank with a defogging device according to claim 1, characterized in that, The tank body (1) includes a shell (11), a heat preservation layer (12) is arranged in the shell (11), and the tank mouth (2) is arranged on the shell (11) and connected with the heat preservation layer (12).

3. The liquid nitrogen tank with defogging device according to claim 2, characterized in that, The first pipeline (41) is arranged between the shell (11) and the heat preservation layer (12), one end of the first pipeline (41) near the tank top is arranged on the top of the tank body (1) and connected with the connecting assembly, the other end of the first pipeline (41) extends to the bottom of the heat preservation layer (12) and is connected with the heat preservation layer (12).

4. The liquid nitrogen tank with a defogging device according to claim 3, characterized in that, The connecting assembly includes a mounting bracket (45), the mounting bracket (45) is fixedly arranged on the top of the tank body (1), and a supply pump (46) is arranged on the mounting bracket (45), the output end of the supply pump (46) is connected with the first pipeline (41), and an electromagnetic valve (44) is further arranged on the first pipeline (41), one end of the electromagnetic valve (44) away from the first pipeline (41) is connected with the second pipeline (42), and one end of the second pipeline (42) away from the electromagnetic valve (44) is connected with a liquid nitrogen supply tank (43).

5. The liquid nitrogen tank with defogging device according to claim 3, characterized in that, The connecting assembly includes a gate valve (47), the gate valve (47) is arranged on the first pipeline (41), one end of the gate valve (47) away from the first pipeline (41) is connected with the second pipeline (42), the second pipeline (42) is arranged on the tank body (1) and is designed to be spirally wound around the heat preservation layer (12), and one end of the second pipeline (42) away from the gate valve (47) is connected with the bottom of the heat preservation layer (12).

6. The liquid nitrogen tank with defogging device according to claim 4, characterized in that, The liquid nitrogen supply tank (43) is detachably arranged on the side wall of the tank body (1).

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