Filling device for liquid nitrogen low-temperature sealing tank

Abstract

The utility model discloses a filling device for a liquid nitrogen low-temperature sealing tank, which relates to the field of liquid nitrogen filling, and comprises a prompt component, the prompt component comprises an outer sleeve, a shielding slide block arranged on the inner wall of the outer sleeve, a liquid leakage pipe arranged at the bottom of the outer sleeve, and an ejection support block arranged on the inner wall of the liquid leakage pipe, and the floating block is arranged at the bottom of the inner wall of the liquid leakage pipe and is positioned at the bottom of the ejection support block. When liquid nitrogen is about to overflow from the bottle opening, the liquid nitrogen cannot smoothly pass through the liquid leakage pipe, so that filling is automatically stopped, and the liquid nitrogen is effectively prevented from overflowing; in addition, whether liquid nitrogen is about to overflow or not can be found in time by observing the position of the limiting sliding plate, and the liquid nitrogen filling is more visual and timely.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of liquid nitrogen filling, and specifically relates to a filling device for a low-temperature sealed tank of liquid nitrogen. Background Technique

[0002] Liquid nitrogen filling is a process that involves safely and effectively injecting liquid nitrogen into a liquid nitrogen tank or other containers; when checking the current liquid nitrogen in a liquid nitrogen container, the staff cannot judge whether the liquid nitrogen is full through observation. Therefore, in actual operations, the situation of insufficient liquid nitrogen or liquid nitrogen overflow often occurs.

[0003] According to a liquid nitrogen filling device provided by CN202321637001.8, including a cylinder body, a lifting rod is rotatably connected to the side wall of the cylinder body, a handle is connected to one end of the lifting rod away from the cylinder body, a lifting ring is arranged at the bottom of the cylinder body, a slider is sleeved and slidably connected to the handle, and a traction wire is connected between the lifting ring and the slider. The lifting rod and the handle extend the distance of the operator to the pouring port, reducing the influence caused by liquid nitrogen splashing. The movement of the slider pulls the traction wire to lift the lifting ring to realize the overturning and pouring of the cylinder body, instead of using the method of leaning the cylinder body against the edge of the inlet of the sample storage box for pouring. The cylinder body can completely enter the sample storage box for pouring, avoiding the risk of liquid nitrogen splashing onto the operator. The cylinder body extends deep into the sample storage box and does not block the entrance, and the operator can timely detect the level of liquid nitrogen in the box.

[0004] The liquid level prompt set in the above device only does not block the observation field of view, and there is still the situation of untimely observation and liquid nitrogen overflow. Content of the Utility Model

[0005] Based on this, the purpose of the present utility model is to provide a filling device for a low-temperature sealed tank of liquid nitrogen to solve the technical problems raised in the above background technique.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A filling device for a low-temperature sealed tank of liquid nitrogen, including a prompt component, the prompt component includes an outer sleeve, a shielding slider arranged on the inner wall of the outer sleeve, a liquid leakage pipe arranged at the bottom of the outer sleeve, a top-out support block arranged on the inner wall of the liquid leakage pipe, and a floating block arranged at the bottom of the inner wall of the liquid leakage pipe and below the top-out support block.

[0008] Preferably, a plurality of linear chutes are evenly embedded on the inner wall of the outer sleeve.

[0009] Preferably, the shielding slider includes a conical slider at the bottom, a limiting sliding plate arranged at the top of the conical slider, and a limiting clamping block arranged at the top of the side wall of the limiting sliding plate;

[0010] The side wall of the limiting slide plate is slidably connected to the inner wall of the linear sliding groove.

[0011] Preferably, limiting long grooves are symmetrically arranged on the inner wall of the liquid leakage pipe, and a plurality of liquid leakage holes are arranged through the outer wall of the liquid leakage pipe.

[0012] Preferably, a plurality of connecting support rods are arranged at the bottom of the ejecting support block, and a circular ring is arranged at the bottom of the connecting support rod; the side wall of the circular ring is slidably connected to the inner wall of the liquid leakage pipe.

[0013] Preferably, a conical protrusion is arranged at the top of the floating block, and square sliding blocks are symmetrically arranged on the side wall of the floating block;

[0014] The square sliding block is slidably connected to the inner wall of the limiting long groove;

[0015] The outer wall of the floating block is slidably connected to the inner wall of the liquid leakage pipe.

[0016] Preferably, the outer diameter of the top of the outer sleeve is larger than the outer diameter of the liquid leakage pipe, and a conical surface is arranged at the connection between the bottom of the outer sleeve and the top of the liquid leakage pipe.

[0017] In summary, the technical solution mainly has the following beneficial effects:

[0018] During the use, when filling liquid nitrogen, when the liquid nitrogen is about to overflow the bottle mouth, the ejecting support block is driven upward by the acting force of the liquid on the floating block, and the liquid nitrogen cannot pass through the liquid leakage pipe smoothly, realizing automatic stop of filling, effectively preventing the liquid nitrogen from overflowing;

[0019] In addition, when the liquid nitrogen is almost full, the movement of the shielding slider drives the limiting slide plate to move together, and by observing the position of the limiting slide plate, it can be timely found whether the liquid nitrogen filling is about to overflow, which is more intuitive and timely. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an axonometric view of the overall structure of the prompting component of the present invention;

[0021] Figure 2 It is an axonometric view of the structure of the outer sleeve and the shielding slider of the present invention;

[0022] Figure 3 It is an axonometric view of the structure of the ejecting support block and the liquid leakage pipe of the present invention;

[0023] Figure 4 It is an axonometric view of the outer sleeve structure of the present invention;

[0024] Figure 5 It is an axonometric view of the overall structure of the shielding slider of the present invention;

[0025] Figure 6Explosion diagram of the liquid leakage pipe, ejection support block and floating block structure of the present utility model.

[0026] Description of the drawings: 10. Prompt component; 11. Outer sleeve; 12. Blocking slider; 13. Liquid leakage pipe; 14. Ejection support block; 15. Floating block; 111. Linear sliding groove; 112. Conical surface; 121. Conical slider; 122. Limit sliding plate; 123. Limit clamping block; 131. Limit long groove; 132. Liquid leakage hole; 141. Connecting support rod; 142. Ring; 151. Conical protrusion; 152. Square slider. Specific implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.

[0028] Embodiment

[0029] As Figure 1 , 3 , shown in 6, it includes a prompt component 10, the prompt component 10 includes an outer sleeve 11, a floating block 15 at the bottom of the inner wall of the liquid leakage pipe 13 and at the bottom of the ejection support block 14, a conical protrusion 151 on the top of the floating block 15, and square sliders 152 symmetrically arranged on the side wall of the floating block 15; the square sliders 152 are slidably connected to the inner wall of the limit long groove 131; the outer wall of the floating block 15 is slidably connected to the inner wall of the liquid leakage pipe 13;

[0030] Symmetric limit long grooves 131 on the inner wall of the liquid leakage pipe 13, and a plurality of liquid leakage holes 132 penetrating through the outer wall of the liquid leakage pipe 13.

[0031] It should be noted that in this embodiment, the prompt component 10 is placed at the liquid nitrogen filling port, and the conical surface 112 at the connection between the bottom of the outer sleeve 11 and the top of the liquid leakage pipe 13 is stuck on the tank mouth. When filling liquid nitrogen, liquid nitrogen enters from the top of the outer sleeve 11, passes through the bottom of the outer sleeve 11 and overflows from a plurality of liquid leakage holes 132 on the side wall of the liquid leakage pipe 13 and enters the sealed tank;

[0032] When the liquid nitrogen approaches the tank mouth, the liquid nitrogen contacts the bottom of the floating block 15, and the buoyancy of the liquid nitrogen acts on the floating block 15, and the floating block 15 moves upward. Among them, the square sliders 152 symmetrically arranged on the side wall of the floating block 15 are slidably connected to the inner wall of the limit long groove 131.

[0033] As Figure 1 , 2As shown in FIGS. 6, the liquid leakage pipe 13 at the bottom of the outer sleeve 11, the ejecting support block 14 on the inner wall of the liquid leakage pipe 13, the plurality of connecting support rods 141 at the bottom of the ejecting support block 14, and the circular ring 142 at the bottom of the connecting support rod 141; the side wall of the circular ring 142 is slidably connected to the inner wall of the liquid leakage pipe 13; the shielding slider 12 includes a conical slider 121 at the bottom, a limiting sliding plate 122 provided at the top of the conical slider 121, and a limiting clamping block 123 at the top of the side wall of the limiting sliding plate 122; the side wall of the limiting sliding plate 122 is slidably connected to the inner wall of the linear sliding groove 111.

[0034] It should be noted that, in this embodiment, when the floating block 15 moves upward, the conical protrusion 151 at the top of the floating block 15 jacks up the circular ring 142, and the circular ring 142 is connected to the ejecting support block 14 through a plurality of connecting support rods 141;

[0035] As it continues to move upward, the top of the ejecting support block 14 acts on the bottom of the conical slider 121, and the conical slider 121 moves upward. When the side wall of the conical slider 121 contacts the inner wall of the bottom of the outer sleeve 11, the liquid nitrogen cannot pass through smoothly. At this time, the liquid nitrogen filling stops automatically.

[0036] As Figure 1 、 2 、5, the shielding slider 12 includes a conical slider 121 at the bottom, a limiting sliding plate 122 provided at the top of the conical slider 121, and a limiting clamping block 123 at the top of the side wall of the limiting sliding plate 122;

[0037] The side wall of the limiting sliding plate 122 is slidably connected to the inner wall of the linear sliding groove 111; the shielding slider 12 on the inner wall of the outer sleeve 11, and the plurality of linear sliding grooves 111 evenly embedded in the inner wall of the outer sleeve 11.

[0038] It should be noted that, in this embodiment, the limiting sliding plate 122 at the top of the conical slider 121 is slidably connected to the inner wall of the linear sliding groove 111, which plays a role in limiting the movement of the conical slider 121. At the same time, the process of the limiting sliding plate 122 moving upward is clearly visible, and it can be directly observed that the liquid nitrogen is about to fill the tank body, which is safer and more reliable;

[0039] The limiting clamping block 123 at the top of the side wall of the limiting sliding plate 122 prevents the conical slider 121 from falling off and plays a role in limiting the conical slider 121.

[0040] The working principle of the present utility model is:

[0041] The prompting component 10 is placed at the liquid nitrogen filling port. The conical surface 112 at the connection between the bottom of the outer sleeve 11 and the top of the liquid leakage pipe 13 is stuck on the tank mouth. When filling with liquid nitrogen, the liquid nitrogen enters from the top of the outer sleeve 11, passes through the bottom of the outer sleeve 11 and overflows from the plurality of liquid leakage holes 132 on the side wall of the liquid leakage pipe 13 into the sealed tank;

[0042] When the liquid nitrogen approaches the mouth of the tank, the liquid nitrogen contacts the bottom of the floating block 15, and the buoyancy of the liquid nitrogen acts on the floating block 15, causing the floating block 15 to move upward. Among them, the square sliders 152 symmetrically arranged on the side wall of the floating block 15 are slidably connected to the inner wall of the limit long groove 131. Therefore, when the floating block 15 moves upward, the conical protrusion 151 at the top of the floating block 15 jacks up the ring 142, and the ring 142 is connected to the ejecting support block 14 through a plurality of connecting support rods 141.

[0043] As it continues to move upward, the top of the ejecting support block 14 acts on the bottom of the conical slider 121, causing the conical slider 121 to move upward. When the side wall of the conical slider 121 contacts the inner wall of the bottom of the outer sleeve 11, the liquid nitrogen cannot pass through smoothly. At this time, the liquid nitrogen filling stops automatically.

[0044] Among them, the limit sliding plate 122 at the top of the conical slider 121 is slidably connected to the inner wall of the linear sliding groove 111, which plays a role in limiting the movement of the conical slider 121. At the same time, the process of the limit sliding plate 122 moving upward is clearly visible, and it can be directly observed that the liquid nitrogen is about to fill the tank body, which is safer and more reliable.

[0045] The limit clamping block 123 at the top of the side wall of the limit sliding plate 122 prevents the conical slider 121 from falling off and plays a role in limiting the conical slider 121.

[0046] The above embodiments are only used to illustrate the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the present invention.

Claims

1. A filling device for a liquid nitrogen cryogenic sealed tank, including a prompting component (10), characterized in that , The prompt component (10) includes an outer sleeve (11), a shielding slider (12) provided on the inner wall of the outer sleeve (11), a liquid leakage pipe (13) provided at the bottom of the outer sleeve (11), a top support block (14) provided on the inner wall of the liquid leakage pipe (13), and a floating block (15) provided at the bottom of the inner wall of the liquid leakage pipe (13) and located at the bottom of the top support block (14).

2. The filling device for a liquid nitrogen low-temperature sealed tank according to claim 1, characterized in that, A plurality of linear chutes (111) are evenly embedded in the inner wall of the outer sleeve (11).

3. The filling device for a liquid nitrogen low-temperature sealed tank according to claim 2, characterized in that, The shielding slider (12) includes a conical slider (121) at the bottom, a limit slide plate (122) provided at the top of the conical slider (121), and a limit clamping block (123) provided at the top of the side wall of the limit slide plate (122); The side wall of the limit slide plate (122) is slidably connected to the inner wall of the linear chute (111).

4. A filling device for a liquid nitrogen cryogenic sealing tank according to claim 1, characterized in that, Limit long grooves (131) are symmetrically provided on the inner wall of the liquid leakage pipe (13), and a plurality of liquid leakage holes (132) are provided through the outer wall of the liquid leakage pipe (13).

5. A filling device for a liquid nitrogen low-temperature sealed tank according to claim 1, characterized in that, A plurality of connecting support rods (141) are provided at the bottom of the top support block (14), and a ring (142) is provided at the bottom of the connecting support rods (141); the side wall of the ring (142) is slidably connected to the inner wall of the liquid leakage pipe (13).

6. A filling device for a liquid nitrogen low-temperature sealed tank according to claim 4, characterized in that, A conical protrusion (151) is provided at the top of the floating block (15), and square sliders (152) are symmetrically provided on the side wall of the floating block (15); The square slider (152) is slidably connected to the inner wall of the limit long groove (131); The outer wall of the floating block (15) is slidably connected to the inner wall of the liquid leakage pipe (13).

7. A filling device for a liquid nitrogen low-temperature sealed tank according to claim 1, characterized in that, The outer diameter of the top of the outer sleeve (11) is greater than the outer diameter of the liquid leakage pipe (13), and a conical surface (112) is provided at the connection between the bottom of the outer sleeve (11) and the top of the liquid leakage pipe (13).

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