Liquid nitrogen tank capable of placing cover plug

Abstract

The utility model relates to the technical field of liquid nitrogen storage, and particularly discloses a liquid nitrogen tank capable of placing a cover plug, the liquid nitrogen tank capable of placing the cover plug comprises a tank body and two placing pieces, the side wall of the tank body is provided with a handle, and the two placing pieces are arranged on the two sides of the handle in the vertical direction; each placing piece comprises a fixing part and a supporting part, the two placing pieces are connected with the handle through the mounting parts of the two placing pieces, and the supporting parts of the two placing pieces are arranged on the upper side and the lower side of the handle; when the small cover body is placed, the supporting part of the upper placing piece can penetrate through the placing hole in the small cover body, and the fixing part of the lower placing piece can abut against the outer side wall of the small cover body, or when the cover plug is placed, the top of the supporting part of the upper placing piece can support the large cover body, and the side, close to the tank body, of the supporting part of the upper placing piece can abut against the inner side wall of the flange on the large cover body. And the supporting part of the lower placing piece can abut against the outer side wall of the large cover body. According to the arrangement, the cover plug or the small cover body can be prevented from being polluted, so that pollutants are prevented from entering the tank body.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen storage, in particular to a liquid nitrogen tank capable of placing a plug. Background Art

[0002] Liquid nitrogen tanks can generally be divided into two types: liquid nitrogen storage tanks and liquid nitrogen transport tanks. The storage tank is mainly used for static storage of liquid nitrogen indoors and is not suitable for long-distance transportation in the working state; the liquid nitrogen transport tank has a special shock-proof design to meet the transportation conditions.

[0003] The storage tank includes a tank body and a plug covering the tank opening of the tank body. Among them, the plug includes a large cover body and a small cover body. The large cover body is provided with a through fluid channel, and the small cover body is used to block the fluid channel; when filling liquid nitrogen into the tank body, only the small cover body needs to be taken out from the fluid channel, and when taking samples from the tank, the large cover body and the small cover body need to be taken out together; the existing tank body does not have a placement position, so that the plug has no fixed position to place, and it is easy to occur that the plug is placed randomly, resulting in plug pollution and bringing pollutants into the tank body.

[0004] Based on this, a liquid nitrogen tank capable of placing a plug is needed to solve the above-mentioned problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a liquid nitrogen tank capable of placing a plug to solve the problem that the plug is placed randomly in the prior art, resulting in plug pollution and bringing pollutants into the tank body.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A liquid nitrogen tank capable of placing a plug is used for placing the plug. Among them, the plug includes a large cover body and a small cover body. The large cover body is provided with a through fluid channel, and the small cover body is used to block the fluid channel;

[0008] The liquid nitrogen tank capable of placing a plug includes a tank body and two placing members. The side wall of the tank body is provided with a handle. The placing member includes a fixing part and a supporting part. Both of the two placing members are connected to the handle through their own installation parts. In the vertical direction, the supporting parts of the two placing members are respectively arranged on the upper and lower sides of the handle;

[0009] When placing the small cover body, the supporting part of the upper placing member can pass through the placing hole on the small cover body, and the fixing part of the lower placing member can abut against the outer side wall of the small cover body; or

[0010] When placing the plug, the top of the supporting part of the upper placing member can support the large cover body, and the side close to the tank body can abut against the inner side wall of the retaining edge on the large cover body, and the supporting part of the lower placing member can abut against the outer side wall of the large cover body.

[0011] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, one side of the fixing part extends vertically to form a support wall, and at least a part of the support wall forms a support portion.

[0012] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, the support wall is sheet-shaped, the height direction of the support wall is parallel to the axis direction of the tank body, and the width direction of the support wall is perpendicular to the axis direction of the tank body. Along the width direction, both ends of the support wall are respectively arranged on both sides of the axis of the tank body.

[0013] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, the support wall is arc-shaped and is adapted to the placement hole of the small lid body. When the support wall penetrates through the placement hole, the support wall is arranged around the axis of the small lid body.

[0014] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, along the width direction, first round corners are provided at both ends of the support wall; and / or

[0015] Along the height direction, second round corners are provided at the top end of the support wall.

[0016] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, the baffle edge of the large lid body is arc-shaped, and the radian of the outer side wall of the support wall is adapted to the radian of the inner side wall of the baffle edge; and / or

[0017] The top of the support wall can support the lower side wall of the large lid body in the large lid.

[0018] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, the fixing part is block-shaped, and the fixing part is detachably connected to the handle.

[0019] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, the other side of the fixing part away from the support part is recessed inward to form a groove. The handle is formed by bending a columnar member. The handle includes two connecting parts arranged at intervals and an installation part arranged between the two connecting parts. The radian of the groove is adapted to the installation part, and at least a part of the installation part is embedded in the groove.

[0020] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, the fixing part is bonded and / or screwed to the installation part.

[0021] As an alternative technical solution for a liquid nitrogen tank capable of placing a plug, the two placing parts are arranged axially symmetrically about the axis of the installation part. The support part of the upper placing part is located on the side of the installation part close to the tank body, and the support part of the lower placing part is located on the side of the installation part away from the tank body.

[0022] The beneficial effects of the utility model are:

[0023] The utility model provides a liquid nitrogen tank capable of placing a cover plug, the liquid nitrogen tank capable of placing a cover plug comprises a tank body and two placing pieces arranged on a handle of the tank body, the two placing pieces are respectively located at the upper and lower sides of the handle, and are connected to the handle through a mounting portion, and when in use, the cover plug and the small cover body can be placed, wherein when the small cover body is placed, the supporting portion of the upper placing piece passes through the placing hole of the small cover body, and the lower fixing portion can abut against the outer side wall of the small cover body; when the cover plug is placed, the top of the supporting portion of the upper placing piece can support the large cover body, and the side close to the tank body can abut against the inner side wall of the retaining edge on the large cover body, and the supporting portion of the lower placing piece can abut against the outer side wall of the large cover body, so that no matter whether liquid nitrogen is added to the tank body or samples are taken from the tank body, the small cover body or the cover plug can be placed on the placing piece, and it is not easy to randomly place the small cover body or the cover plug, thereby preventing the small cover body or the cover plug from being contaminated, and further preventing the small cover body or the cover plug from bringing pollutants into the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a liquid nitrogen tank and a cover plug capable of placing a cover plug in an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a liquid nitrogen tank capable of placing a cover plug in an embodiment of the utility model;

[0026] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0027] Figure 4 It is a partial cross-sectional view of a liquid nitrogen tank capable of placing a cover plug in an embodiment of the utility model;

[0028] Figure 5 It is a cross-sectional view of the cover plug in the embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure in which the small cover is placed on the handle in an embodiment of the utility model;

[0030] Figure 7 for Figure 6 A partial cross-sectional view of

[0031] Figure 8 This is a schematic diagram of the structure of the cover plug placed on the handle in the embodiment of the utility model;

[0032] Figure 9 for Figure 8 A partial cross-sectional view of .

[0033] In the figure:

[0034] 1000. Large cover body; 1100. Large cover main body; 1200. Large heat preservation plug; 1300. Flange

[0035] 2000. Small cover body; 2100. Small cover main body; 2110. Placing hole; 2200. Small heat preservation plug

[0036] 100. Tank main body; 110. Handle; 111. Connecting part; 112. Mounting part; 120. Tank opening

[0037] 200. Placing member; 210. Fixing part; 211. Groove; 220. Supporting part; 221. First fillet; 222. Second fillet Specific embodiments

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or only indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or only indicating that the first feature has a lower horizontal height than the second feature.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0042] As Figures 1 to 9 shown, this embodiment provides a liquid nitrogen tank capable of placing a plug. The liquid nitrogen tank includes a tank body 100 and a plug covering the tank opening 120 of the tank body 100. Among them, the plug includes a large cover body 1000 and a small cover body 2000. The outer diameter of the large cover body 1000 is greater than that of the small cover body 2000. The large cover body 1000 is provided with a through fluid passage, and the small cover body 2000 is used to block the fluid passage. The large cover body 1000 includes a large cover main body 1100 and a large heat preservation plug 1200 provided under the large cover main body 1100. The outer diameter of the large cover main body 1100 is greater than that of the large heat preservation plug 1200. The large heat preservation plug 1200 is used to block the tank opening 120 of the tank body 100. A ring-shaped edge 1300 surrounding the outer periphery of the large heat preservation plug 1200 is provided on the lower side of the large cover main body 1100; the small cover body 2000 includes a small cover main body 2100 and a small heat preservation plug 2200 provided under the small cover main body 2100. The small heat preservation plug 2200 can be inserted into the fluid passage to block the fluid passage; among them, a placement hole 2110 is provided on the outside of the small cover main body 2100 along the axis of the small cover main body 2100, and the outer diameter of the small cover main body 2100 is greater than that of the small heat preservation plug 2200 and greater than the diameter of the fluid passage.

[0043] Combined with Figure 2 and Figure 3 shown, the liquid nitrogen tank capable of placing a plug includes a tank body 100 and two placement members 200. A handle 110 is provided on the side wall of the tank body 100, and the two placement members 200 are arranged on both sides of the handle 110 in the vertical direction; the placement member 200 includes a fixing portion 210 and a supporting portion 220. Both of the two placement members 200 are connected to the handle 110 through their own installation portions 112, and the supporting portions 220 of the two placement members 200 are respectively arranged on the upper and lower sides of the handle 110; combined with Figure 6 and Figure 7 shown, when placing the small cover body 2000, the supporting portion 220 of the upper placement member 200 can pass through the placement hole 2110 on the small cover main body 2100, and the fixing portion 210 of the lower placement member 200 can abut against the outer side wall of the small heat preservation plug 2200. Combined with Figure 8 and Figure 9As shown, when placing the lid plug, the top of the support portion 220 of the upper placing member 200 can support the lower side wall of the large lid body 1100 in the large lid body 1000, and the side close to the tank body 100 can abut against the inner side wall of the baffle 1300, and the support portion 220 of the lower placing member 200 can abut against the outer side wall of the large heat insulation plug 1200 in the large lid body 1000.

[0044] The above settings enable that whether filling liquid nitrogen into the tank body 100 or sampling from the tank body 100, the lid plug or the small lid body 2000 can be placed on the placing member 200, and it is not easy to randomly place the lid plug or the small lid body 2000, thereby avoiding contamination of the lid plug or the small lid body 2000, and further avoiding the problem that the lid plug or the small lid body 2000 brings pollutants into the tank body 100.

[0045] The upper side of the fixing portion 210 extends vertically upward to form a support wall, and at least a part of the support wall forms the support portion 220. During use, the support wall, as the support portion 220, can pass through the placing hole 2110 on the small lid body 2100. To ensure the stability of the support for the small lid body 2000, the upper fixing portion 210 can support the lower side wall of the small lid body 2100.

[0046] To prevent the small lid body 2000 from shifting when placed, the support wall is sheet-shaped, the height direction of the support wall is parallel to the axis direction of the tank body 100, and the width direction of the support wall is perpendicular to the axis direction of the tank body 100. Along the width direction, both ends of the support wall are arranged on both sides of the axis of the tank body 100. This setting enables that when the support wall passes through the placing hole 2110 of the small lid body 2000, the small lid body 2000 cannot rotate relative to the support wall, thus ensuring the stability of the small lid body 2000. Further, the fixing portion 210 is strip-shaped and extends along the width direction, and the fixing portion 210 can support the lower side wall of the small lid body 2100 to prevent the small lid body 2000 from tilting. Among them, the width direction is the front-back direction, the vertical direction is the up-down direction, and the two handles 110 are respectively located on the left and right sides of the tank body 100. The up-down direction, the left-right direction, and the front-back direction are perpendicular.

[0047] The support wall is arc-shaped and is adapted to the placing hole 2110 of the small lid body 2000. When the support wall passes through the placing hole 2110, the support wall is arranged around the axis of the small lid body 2000. This setting enables that when the support wall passes through the placing hole 2110, even if the fixing portion 210 does not support the small lid body 2100, the small lid body 2000 will not tilt.

[0048] For ease of machining, at both ends of the support wall in the width direction, first rounded corners 221 are provided in an inverted manner. For ease of the support wall passing through the placement hole 2110, at the top end of the support wall in the height direction, second rounded corners 222 are provided in an inverted manner. In some embodiments, at both ends of the support wall in the width direction, first rounded corners 221 are provided, and at the top end of the support wall in the height direction, second rounded corners 222 are provided. The above chamfers make the outer surface of the support wall round and avoid scratching the operator.

[0049] For ease of placing the large cover body 1000, the edge 1300 of the large cover body 1000 is arc-shaped, and the radian of the outer side wall of the support wall is adapted to the radian of the inner side wall of the edge 1300. The top of the support wall can support the lower side wall of the large cover body 1100. This setting makes the contact area between the support wall and the baffle larger and can prevent the large cover body 1000 from tilting.

[0050] In some embodiments, the fixing part 210 is in a block shape, and the fixing part 210 is detachably connected to the handle 110. The detachable connection method enables the placement part 200 to be produced and processed separately, and when it is damaged, it can be replaced separately, avoiding affecting the handle 110.

[0051] To increase the contact area between the fixing part 210 and the handle 110 and improve the connection strength, on the side of the fixing part 210 away from the support part 220, an inward concave groove 211 is formed. The handle 110 is formed by bending a columnar part. The handle 110 includes two connecting parts 111 arranged at intervals and a mounting part 112 arranged between the two connecting parts 111. The radian of the groove 211 is adapted to the mounting part 112, and the mounting part 112 is at least partially embedded in the groove 211. Specifically, the two grooves 211 in the two placement parts 200 are relatively matched to form a cylindrical groove, and the mounting part 112 penetrates through the cylindrical groove, so that the two fixing parts 210 complete the wrapping of the mounting part 112, maximizing the contact area between the placement part 200 and the handle 110 and the reliability of the connection between the two.

[0052] The two placement parts 200 are axially symmetrically arranged with respect to the axis of the mounting part 112. The support part 220 of the upper placement part 200 is located on the side of the mounting part 112 close to the tank body 100, and the support part 220 of the lower placement part 200 is located on the side of the mounting part 112 away from the tank body 100. This setting can adapt to the self-structures of the small cover body 2000 and the large cover body 1000, enabling both the small cover body 2000 and the large cover body 1000 to be horizontally placed on the placement part 200. Among them, combined Figure 4 and Figure 5As shown, the distance H from the side of the fixing part 210 away from the tank body 100 to the side of the supporting part 220 close to the tank body 100, that is, the dimension of the placing part 200 in the left-right direction is H. The extending direction of the placing hole 2110 is parallel to the axis of the small cover body 2000, and the distance H1 from the placing hole 2110 to the side wall of the small heat preservation plug 2200, and the distance from the inner side wall of the baffle 1300 to the outer side wall of the large heat preservation plug 1200 is H2, and H1 = H2 = H.

[0053] To prevent the fixing part 210 from rotating around the axis of the mounting part 112, the fixing part 210 and the mounting part 112 are adhesively bonded with glue. In some embodiments, the fixing part 210 and the mounting part 112 are screwed with screws. In some embodiments, the fixing part 210 and the mounting part 112 are adhesively bonded and screwed. Specifically, the two fixing parts 210 are clamped on the upper and lower sides of the mounting part 112. The mounting part 112 is provided with a mounting hole through which a screw passes through the fixing holes on the two fixing parts 210 and the mounting hole and is connected with a nut.

[0054] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A liquid nitrogen tank capable of placing a cap plug, for placing the cap plug, wherein: The cover plug comprises a large cover body (1000) and a small cover body (2000); the large cover body (1000) is provided with a through fluid channel, and the small cover body (2000) is used to block the fluid channel; The liquid nitrogen tank capable of placing a cover plug comprises a tank body (100) and two placement pieces (200), the side wall of the tank body (100) is provided with a handle (110), the placement piece (200) comprises a fixing portion (210) and a supporting portion (220), the two placement pieces (200) are connected to the handle (110) through their own mounting portions (112), and in the vertical direction, the supporting portions (220) of the two placement pieces (200) are respectively arranged on the upper and lower sides of the handle (110); When placing the small cover (2000), the supporting portion (220) of the upper placement piece (200) can pass through the placement hole (2110) on the small cover (2000), and the fixing portion (210) of the lower placement piece (200) can abut against the outer side wall of the small cover (2000); or When placing the cover plug, the top of the supporting portion (220) of the upper placing piece (200) can support the large cover body (1000), and the side close to the tank body (100) can abut against the inner side wall of the retaining edge (1300) on the large cover body (1000), and the supporting portion (220) of the lower placing piece (200) can abut against the outer side wall of the large cover body (1000).

2. The liquid nitrogen tank capable of placing a plug according to claim 1, characterized in that: One side of the fixing portion (210) extends in a vertical direction to form a supporting wall, and at least a portion of the supporting wall forms a supporting portion (220).

3. The liquid nitrogen tank capable of placing a plug according to claim 2, characterized in that: The support wall is in the form of a sheet, the height direction of the support wall is parallel to the axial direction of the tank body (100), and the width direction of the support wall is perpendicular to the axial direction of the tank body (100). Along the width direction, the two ends of the support wall are arranged on both sides of the axis of the tank body (100).

4. The liquid nitrogen tank capable of placing a plug according to claim 3, characterized in that: The support wall is arc-shaped and is compatible with the placement hole (2110) of the small cover body (2000). When the support wall is inserted into the placement hole (2110), the support wall is arranged around the axis of the small cover body (2000).

5. The liquid nitrogen tank capable of placing a plug according to claim 3, characterized in that: Along the width direction, both ends of the support wall are inverted with first rounded corners (221); and / or Along the height direction, the top end of the support wall is invertedly provided with a second rounded corner (222).

6. The liquid nitrogen tank capable of placing a plug according to claim 3, characterized in that: The retaining edge (1300) of the large cover (1000) is arc-shaped, and the curvature of the outer side wall of the supporting wall is matched with the curvature of the inner side wall of the retaining edge (1300); and / or The top of the support wall can support the lower side wall of the large cover body (1100) in the large cover body (1000).

7. The liquid nitrogen tank capable of placing a plug according to claim 1, characterized in that: The fixing portion (210) is block-shaped, and the fixing portion (210) is detachably connected to the handle (110).

8. The liquid nitrogen tank capable of placing a plug according to claim 7, characterized in that: The other side of the fixing portion (210) away from the supporting portion (220) is concave inward to form a groove (211); the handle (110) is formed by bending a columnar member; the handle (110) comprises two connecting portions (111) arranged at intervals and a mounting portion (112) arranged between the two connecting portions (111); the curvature of the groove (211) is adapted to the mounting portion (112); and the mounting portion (112) is at least partially embedded in the groove (211).

9. The liquid nitrogen tank capable of placing a plug according to claim 1, characterized in that: The fixing portion (210) is bonded and / or screwed to the mounting portion (112).

10. The liquid nitrogen tank capable of placing a plug according to any one of claims 1 to 9, characterized in that: The two placement pieces (200) are axially symmetrically arranged about the axis of the mounting portion (112); the support portion (220) of the upper placement piece (200) is located on a side of the mounting portion (112) close to the tank body (100), and the support portion (220) of the lower placement piece (200) is located on a side of the mounting portion (112) away from the tank body (100).

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