Liquid nitrogen tank protective cover with locking structure

Abstract

The utility model relates to the technical field of liquid nitrogen containers, in particular to a liquid nitrogen container protective cover with a locking structure, which comprises a lower cover body, a lower cover body and a locking structure, the upper cover body is rotationally mounted on the lower cover body; the locking part is arranged between the upper cover body and the lower cover body and is used for keeping the upper cover body locked; according to the liquid nitrogen tank protection cover with the locking structure, a heat preservation protection structure can be formed outside the tank opening through the upper cover body and the lower cover body, potential safety hazards existing in the low-temperature atmosphere of the tank opening are avoided, the situation that the tank opening is accidentally touched to cause human body injuries or the cover plug is loosened due to external object touch is avoided, meanwhile, cooling atmosphere exosmosis can be reduced, and the service life of the liquid nitrogen tank is prolonged. The heat preservation effect can be improved; by arranging the locking part, the safety can be improved, a specially-assigned person can conveniently manage the sample, and the risk that the sample is damaged after mistaken opening is avoided.

Description

Technical Field

[0001] This utility model relates to the field of liquid nitrogen tank technology, specifically to a protective cover for a liquid nitrogen tank with a locking structure. Background Technology

[0002] Liquid nitrogen tanks are used to hold liquid nitrogen gas. Relying on the low-temperature properties of nitrogen, they are widely used in industries such as medical care and laboratories for storing or transporting blood, vaccines, bacterial strains, and live samples.

[0003] However, in current liquid nitrogen tank designs, the inlet, i.e., the tank opening, is typically sealed with a directly press-fitted stopper. This stopper is then inserted into the tank opening with a gap fit. Over time, the seal between the stopper and the opening can deteriorate, increasing the evaporation of liquid nitrogen. Furthermore, the evaporation of liquid nitrogen through the gap at the opening leads to extremely low temperatures at the opening. Since there is no protective structure at the tank opening, it is highly susceptible to accidental contact with the opening and the stopper, resulting in frostbite and posing a significant safety hazard.

[0004] In addition, the current liquid nitrogen tank stoppers do not have locking devices, which cannot provide safety protection and cannot protect samples managed by designated personnel. Therefore, in order to solve the above problems, we consider designing a protective cover on the outside of the tank opening, and at the same time designing a locking structure to improve the safety protection during use. In view of this, we propose a protective cover for liquid nitrogen tanks with a locking structure. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings mentioned in the background art and provide a protective cover for a liquid nitrogen tank with a locking structure.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A protective cover for a liquid nitrogen tank with a locking structure, comprising:

[0008] The lower cover is installed at the opening of the liquid nitrogen tank;

[0009] The upper cover is rotatably mounted on the lower cover.

[0010] A locking part is disposed between the upper cover and the lower cover to keep the upper cover locked.

[0011] Preferably, the locking part includes an electromagnetic lock and a mechanical lock respectively installed on the lower cover and the upper cover;

[0012] The upper cover is equipped with a locking hook for locking with the electromagnetic lock, and the lower cover is provided with a locking block for locking with the mechanical lock.

[0013] Preferably, an outer edge protrusion is fixedly connected to the outer end of the lower cover body, and an insertion cavity for installing the card block is provided between the outer edge protrusion and the lower cover body;

[0014] The upper cover has a convex cover at its outer end for installing the mechanical lock. The mechanical lock corresponds to the position of the insertion cavity and is used to lock onto the locking block by means of a lock head.

[0015] Preferably, a vertical cavity is provided at the outer end of the lower cover body, and the locking hook is installed on the inner side of the upper cover body;

[0016] The locking hook is used to insert into the vertical cavity.

[0017] Preferably, the electromagnetic lock is installed on the lower cover near the vertical cavity, and the electromagnetic lock is provided with a locking tongue located inside the vertical cavity;

[0018] When the upper cover is closed, the latch is used to lock the locking hook.

[0019] Preferably, the inner wall of the lower cover is provided with a thermal insulation layer.

[0020] Preferably, multiple mounting pads are fixedly installed around the opening of the liquid nitrogen tank;

[0021] The lower cover has a sleeve hole at its axial center for insertion into the opening of the liquid nitrogen tank, and mounting holes for detachable installation on multiple mounting pads via screws.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. The protective cover for the liquid nitrogen tank with locking structure can form a heat-insulating and protective structure outside the tank opening through the upper and lower cover, avoiding the safety hazards of the low temperature atmosphere at the tank opening. It helps to prevent accidental contact with the tank opening that could cause injury to the human body or loosening of the cap due to contact with foreign objects. At the same time, it can reduce the leakage of cooling atmosphere and also help to improve the heat preservation effect.

[0024] 2. The locking mechanism enhances security, facilitates sample management by designated personnel, and avoids the risk of sample damage due to accidental opening. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0026] Figure 1 This is one of the installation diagrams of the overall structure embodiment of this utility model;

[0027] Figure 2 This is the second schematic diagram of the installation of the overall structure embodiment of this utility model;

[0028] Figure 3 This is an installation diagram of an embodiment of the overall structure of this utility model;

[0029] Figure 4 This is one of the schematic diagrams of the overall structure of this utility model;

[0030] Figure 5 This is the second schematic diagram of the overall structure of this utility model;

[0031] Figure 6 This utility model Figure 5 A magnified view of part A in the middle.

[0032] The meanings of the labels in the diagram are as follows:

[0033] 1. Liquid nitrogen tank; 101. Mounting pad; 2. Lower cover; 21. Outer edge protrusion; 22. Locking block; 201. Insertion cavity; 202. Vertical cavity; 203. Mounting hole; 204. Sleeve hole; 3. Upper cover; 31. Protruding cover; 4. Tank stopper; 5. Cryopreservation rack; 6. Mechanical lock; 7. Lock hook; 8. Electromagnetic lock; 81. Lock tongue. Detailed Implementation

[0034] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] Please see Figure 1-6 The present invention will describe the above technical solution in detail through the following embodiments:

[0036] This embodiment features a protective cap for a liquid nitrogen tank with a locking mechanism, including:

[0037] Lower cover 2, such as Figure 1 , Figure 2 As shown in the diagram, four mounting blocks 101 are fixedly installed around the opening of the liquid nitrogen tank 1, as follows: Figure 4The structure shown has a sleeve hole 204 at the center of the lower cover 2 for insertion into the opening of the liquid nitrogen tank 1, and four mounting holes 203 corresponding one-to-one with the mounting pad 101. During installation, the sleeve hole 204 is fitted onto the opening of the liquid nitrogen tank 1, and the lower cover 2 is detachably mounted on the mounting pad 101 through screws at the mounting holes 203. At the same time, the sleeve hole 204 and the opening of the liquid nitrogen tank 1 are bonded together with low temperature resistant adhesive to increase the installation firmness.

[0038] To improve the thermal insulation and protection function, a layer of thermal insulation cotton is provided on the inner wall of the lower cover 2.

[0039] An upper cover 3 is rotatably mounted on one end of the lower cover 2 via a damping shaft. When the cover is closed, it forms an outer protective structure at the top of the liquid nitrogen tank 1, which can avoid the safety hazard of low temperature at the tank opening.

[0040] To address security concerns, this solution incorporates a locking mechanism on the enclosure, combining a mechanical lock and an electromagnetic lock. Other embodiments may also utilize either a mechanical lock or an electromagnetic lock individually. Figures 4-6 As shown in the positional relationship, the locking part in this embodiment is located between the lower cover 2 and the upper cover 3, specifically including an electromagnetic lock 8 and a mechanical lock 6 respectively installed on the lower cover 2 and the upper cover 3. A locking hook 7 for locking the electromagnetic lock 8 is installed on the upper cover 3, and a locking block 22 for locking with the mechanical lock 6 is provided on the lower cover 2.

[0041] This implementation example Figures 4-6 The structure shown has an outer edge protrusion 21 fixedly connected to the outer end of the lower cover 2, and a locking block 22 capable of locking the mechanical lock 6 is installed in the cavity 201 between the outer edge protrusion 21 and the lower cover 2.

[0042] In addition, such as Figure 5 Figure 6 As shown, a vertical cavity 202 corresponding to the position of the locking hook 7 is provided at the outer end of the lower cover 2. The locking hook 7 can be inserted into the vertical cavity 202 when the upper cover 3 is closed. An electromagnetic lock 8 is installed on the lower cover 2, and the locking tongue 81 of the electromagnetic lock 8 is located in the vertical cavity 202, and can be locked onto the locking hook 7 by the electromagnetic lock 8.

[0043] In this embodiment, to prevent the electromagnetic lock 8 from failing after an accidental power outage, a forced opening is provided on the lower cover 2 at the location of the electromagnetic lock 8. This forced opening can be used with a screwdriver to forcibly open the electromagnetic lock, thus opening it from its locked state, in order to meet the needs of sampling in case of emergencies. This solution can solve the problem of poor protection in the actual use of existing liquid nitrogen tanks, improve the safety factor, and reduce the low-temperature leakage at the tank opening.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A protective cover for a liquid nitrogen tank with a locking structure, characterized in that: include: The lower cover (2) is installed at the opening of the liquid nitrogen tank (1); The upper cover (3) is rotatably mounted on the lower cover (2); A locking part is provided between the upper cover (3) and the lower cover (2) to keep the upper cover (3) locked.

2. The liquid nitrogen tank protective cover with locking structure as described in claim 1, characterized in that: The locking part includes an electromagnetic lock (8) and a mechanical lock (6) respectively installed on the lower cover (2) and the upper cover (3); The upper cover (3) is equipped with a locking hook (7) for locking with the electromagnetic lock (8), and the lower cover (2) is provided with a locking block (22) for locking with the mechanical lock (6).

3. The liquid nitrogen tank protective cover with locking structure as described in claim 2, characterized in that: An outer edge protrusion (21) is fixedly connected to the outer end of the lower cover (2), and an insertion cavity (201) for installing the card block (22) is provided between the outer edge protrusion (21) and the lower cover (2); The outer end of the upper cover (3) is provided with a convex cover (31) for installing the mechanical lock (6). The mechanical lock (6) corresponds to the position of the insertion cavity (201), and the mechanical lock (6) is used to lock onto the locking block (22) by means of a lock head.

4. The protective cover for a liquid nitrogen tank with a locking structure as described in claim 3, characterized in that: The lower cover (2) has a vertical cavity (202) at its outer end, and the locking hook (7) is installed on the inner side of the upper cover (3); The locking hook (7) is used to be inserted into the vertical cavity (202).

5. The liquid nitrogen tank protective cover with locking structure as described in claim 4, characterized in that: The electromagnetic lock (8) is installed on the lower cover (2) near the vertical cavity (202), and the electromagnetic lock (8) is provided with a locking tongue (81) located in the vertical cavity (202); When the upper cover (3) is closed, the latch (81) is used to lock the latch (7).

6. The protective cover for a liquid nitrogen tank with a locking structure as described in claim 1, characterized in that: The lower cover (2) has an insulation cotton layer on its inner wall.

7. The protective cover for a liquid nitrogen tank with a locking structure as described in claim 1, characterized in that: The liquid nitrogen tank (1) is fixedly installed with multiple mounting pads (101) around the tank opening; The lower cover (2) has a sleeve hole (204) at its axial center for insertion into the opening of the liquid nitrogen tank (1), and a mounting hole (203) for detachable installation on a plurality of mounting pads (101) by screws.

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