Outer protective cover

Abstract

The utility model relates to the technical field of liquid nitrogen tanks, in particular to an outer protective cover, which comprises a lower cover, an upper cover, a lower cover and a protective cover, the upper cover part comprises an upper cover body rotationally mounted on the lower cover and a display detachably mounted on the cover surface of the upper cover body through a mounting sleeve seat, an inner mounting bin cover is mounted on the inner side of the upper cover body, and the inner mounting bin cover is used for separating the display from the tank plug; the problem of poor protection force caused by leakage of an existing display and a wire harness can be solved, the tank plug and the display are separated by internally installing the bin cover, the problem of display circuit failure caused by too low temperature of the top of the liquid nitrogen tank is avoided, and the use safety is guaranteed; the inner mounting bin cover is provided with the wiring hole, and the wiring hole is communicated with the inner mounting bin cover, so that wiring harnesses can be conveniently arranged in, the wiring harnesses are prevented from being exposed, the wiring harnesses are neat in layout, and the safety of the wiring harnesses is ensured; and the display is mounted in the upper cover in a clamping manner through the mounting sleeve seat, and is convenient to disassemble, maintain and replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid nitrogen tank technical field, concretely relates to an outer protective cover. BACKGROUND

[0002] Liquid nitrogen tank is used for loading liquid nitrogen, relies on the low temperature characteristic of nitrogen and is widely used in medical treatment, laboratory and other industries, and is used for storing or transporting blood, vaccine, strain, living sample and the like.

[0003] At present, when the liquid nitrogen tank is designed, the inlet of liquid nitrogen, that is, the bottle mouth, is usually closed and protected by directly loading a plug; in addition, in order to detect the temperature in the tank, at present, only a temperature digital display device can be externally arranged outside the tank body, and is mostly externally hung on the tank body or arranged on the top of the plug, which can easily cause the problem that the sample in the tank is inconvenient to take; that is, the display of the existing protective device is an externally hung part, and the temperature sensing wire bundle is externally leaked from the tank, and the part of the structure is not effectively protected; at the same time, because the tank opening position is in a low temperature atmosphere, the temperature near the tank opening position is reduced in the long-term use and sample taking process, and condensation and icing are easily caused on the digital display device or the wire bundle, which causes circuit safety hazards and affects the reliability of the digital display device.

[0004] In view of the above, it is considered that a protective structure needs to be added at the tank opening position to reduce the damage of the digital display device caused by the low temperature atmosphere, and accordingly, the utility model provides an outer protective cover. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at solving the problems mentioned in the background and provides an outer protective cover.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] An outer protective cover comprises:

[0008] A lower cover is installed at the tank opening of a liquid nitrogen tank, and a plug is installed in the tank opening of the liquid nitrogen tank;

[0009] An upper cover part comprises an upper cover body rotatably installed on the lower cover, and a display detachably installed on the cover surface of the upper cover body through a mounting sleeve, and an inner installation warehouse cover is installed on the inner side of the upper cover body, and the inner installation warehouse cover is used for separating the display and the plug.

[0010] Preferably, a slot for inserting the mounting sleeve is arranged on the upper cover body;

[0011] A straight arm buckle and a clamping block for detachable clamping are respectively arranged on the mounting sleeve and the slot.

[0012] Preferably, the inner installation cover is detachably installed at the inner side of the upper cover body, and a sink groove corresponding to the installation sleeve is arranged on the inner installation cover, and a through hole for discharging condensed water is arranged on the sink groove.

[0013] Preferably, a liquid level sensor and a temperature sensor are installed at the bottom of the tank plug.

[0014] Preferably, a wire hole is arranged at one end of the inner installation cover, and the wire hole is used for arranging a wire harness in the inner installation cover.

[0015] Preferably, a heat preservation layer is installed at the cover wall of the inner installation cover.

[0016] Preferably, a convex cover is arranged at one end of the upper cover body, and a closing lock used for locking on the lower cover is installed in the convex cover.

[0017] Compared with the prior art, the display device has the beneficial effects that:

[0018] 1. The outer protective cover can solve the problem of poor protection of the existing display and wire harness, and the inner installation cover is arranged to separate the tank plug and the display, thereby avoiding the problem of display circuit failure caused by too low temperature at the top of the liquid nitrogen tank, and ensuring the use safety.

[0019] 2. The inner installation cover is provided with a wire hole, the wire hole is communicated with the inner installation cover, the wire harness is arranged in the inner installation cover, the wire harness is prevented from being exposed, the layout of the wire harness is neat, and the safety of the wire harness is ensured.

[0020] 3. The display is installed in the upper cover through the installation sleeve clamping mode, and is convenient to disassemble and assemble and convenient to maintain and replace. DETAILED DESCRIPTION

[0021] The drawings accompanying the specification provide further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 It is one of the installation schematic views of the overall structure embodiment of the present application;

[0023] Figure 2 It is the second installation schematic view of the overall structure embodiment of the present application;

[0024] Figure 3 It is the overall structure schematic view of the present application;

[0025] Figure 4 It is one of the exploded views of the overall structure of the present application;

[0026] Figure 5The whole structure disassembled view two of the utility model;

[0027] Figure 6 The utility model discloses an inner installation warehouse cover schematic view.

[0028] The meaning of each reference numeral in the drawing is as follows:

[0029] 1, liquid nitrogen tank;2, lower cover;3, upper cover part;31, upper cover cover body;311, convex cover;312, slot;313, clamping block;32, closure lock;33, display;34, mounting sleeve;341, straight arm buckle;35, inner installation warehouse cover;351, sink groove;3511, through hole;352, wiring hole;4, tank plug;5, liquid level sensor;6, temperature sensor. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The embodiments in the application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] Please refer to Figures 1-6 , the utility model discloses the technical scheme in the preceding text in the following embodiments:

[0032] The outer protection cover of this embodiment, as shown in the embodiment installation schematic view, Figure 1 , Figure 2 , wherein the fixed lower cover 2 is installed at the tank opening of the liquid nitrogen tank 1, and the existing tank plug 4 structure is still inserted and installed in the tank opening of the liquid nitrogen tank 1 in this embodiment. However, considering that the ambient temperature is low and the liquid level and temperature inside need to be tested, although the liquid level sensor 5 and temperature sensor 6 are installed at the bottom of the tank plug 4 in this embodiment, the digital display part is not in the traditional hanging mode.

[0033] In order to avoid the erosion of condensed water on the digital display part structure, the upper cover part 3 is rotatably installed on the lower cover 2 in this embodiment, and the specific structure is shown in Figures 2-5 , the upper cover part 3 includes the upper cover cover body 31 rotatably installed on the lower cover 2, one end of the upper cover cover body 31 is provided with the convex cover 311, the convex cover 311 is provided with the closure lock 32, and the closure lock 32 of the mechanical lock is convenient for locking the cover body and reducing the exosmosis of cold air.

[0034] In this embodiment, a slot 312 is provided in the middle of the upper cover 31. A mounting bracket 34 is inserted into the slot 312, and the display 33 is installed in the mounting bracket 34. The mounting bracket 34 and the slot 312 are respectively provided with a straight arm buckle 341 and a buckle block 313. This part uses plastic buckles, which have a deformation clamping effect and are easy to disassemble and repair.

[0035] It should be noted that the liquid level sensor 5 and the temperature sensor 6 need to be electrically connected to the display to transmit data via a wiring harness. The exposed wiring harness is easily damaged in low-temperature environments. Therefore, in this embodiment, an inner mounting compartment cover 35 is detachably installed inside the upper cover 31.

[0036] like Figure 6 The structure shown includes a water trough 351 on the inner mounting cover 35 corresponding to the mounting sleeve 34, and a wiring hole 352 at one end of the inner mounting cover 35 to facilitate the arrangement and installation of the wiring harness in the inner mounting cover 35. Placing the wiring harness inside the inner mounting cover 35 can prevent the wiring harness from being exposed when the cover is opened, making the wiring harness layout neat and ensuring the safety of the wiring harness. The inner mounting cover 35 is not completely sealed, so water vapor in the air will still condense after it is closed. Therefore, a through hole 3511 is provided on the water trough 351 to allow the condensed water to flow out and prevent the wiring harness from short-circuiting.

[0037] It should be noted that the inner mounting compartment cover 35 can separate the display 33 from the plug 4, providing space for the wiring harness installation. At the same time, the inner and outer walls of the inner mounting compartment cover 35 are equipped with thermal insulation cotton layers to prevent the digital display equipment and wiring harness from being corroded and damaged by the low temperature environment.

[0038] 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.

[0039] 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. An outer protective cover, characterized in that: include: The lower cover (2) is installed at the opening of the liquid nitrogen tank (1), and a plug (4) is installed inside the opening of the liquid nitrogen tank (1); The upper cover (3) includes an upper cover body (31) rotatably mounted on the lower cover (2) and a display (33) detachably mounted on the cover surface of the upper cover body (31) via a mounting sleeve (34). An inner mounting compartment cover (35) is installed inside the upper cover body (31) to separate the display (33) from the can stopper (4).

2. The outer protective cover as described in claim 1, characterized in that: The upper cover (31) is provided with a slot (312) for inserting the mounting sleeve (34); The mounting sleeve (34) and the slot (312) are respectively provided with a straight arm buckle (341) and a locking block (313) for detachable mounting.

3. The outer protective cover as described in claim 2, characterized in that: The inner mounting cover (35) is detachably installed inside the upper cover (31). The inner mounting cover (35) is provided with a water sink (351) corresponding to the mounting sleeve (34). The water sink (351) is provided with a through hole (3511) for draining condensate.

4. The outer protective cover as described in claim 3, characterized in that: A liquid level sensor (5) and a temperature sensor (6) are installed at the bottom of the plug (4).

5. The outer protective cover as described in claim 4, characterized in that: The inner mounting compartment cover (35) is provided with a wiring hole (352) at one end, and the wiring hole (352) is used to arrange and install the wire harness in the inner mounting compartment cover (35).

6. The outer protective cover as described in claim 1, characterized in that: The inner installation compartment cover (35) has an insulation layer installed on its wall.

7. The outer protective cover as described in claim 1, characterized in that: The upper cover (31) has a convex cover (311) at one end, and a locking lock (32) for locking the lower cover (2) is installed inside the convex cover (311).

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