Liner supporting structure of liquid nitrogen tank

Abstract

The utility model provides an inner container supporting structure of a liquid nitrogen tank. The inner container supporting structure at least comprises two side supporting columns which are arranged on the inner side of a tank body at equal intervals in the circumferential direction and extend in the radial direction. Clamping rods capable of axially moving relative to the side supporting columns are concentrically inserted into the inner sides of the side supporting columns, and clamping holes matched with the clamping rods are formed in the outer wall of the inner container. The bottom side of the tank body is provided with an opening allowing the inner container to be installed in the tank body, and a base capable of sealing the opening is detachably installed at the bottom of the tank body. A transmission assembly is arranged in the tank body, and when the base is installed at the bottom of the tank body, the transmission assembly can synchronously drive the clamping rods to protrude out of the centripetal ends of the side supporting columns so as to be clamped into the clamping holes. The supporting structure for the inner container of the liquid nitrogen tank is suitable for the use of a combined type liquid nitrogen transportation tank, and before transportation, the inner container can be automatically supported and fixed in the tank body stably and reliably by only utilizing the effect that the base is installed at the opening in the bottom of the tank body and being matched with the use of the transmission assembly, and collision and damage are avoided.

Description

Technical Field

[0001] This utility model relates to the field of liquid nitrogen tank technology, specifically to a support structure for the inner liner of a liquid nitrogen tank. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] Liquid nitrogen tanks can generally be divided into two types: storage type and transport type. Storage type liquid nitrogen tanks are mainly used for indoor static storage of liquid nitrogen and are not suitable for long-distance transportation while in operation. Transport type liquid nitrogen tanks are used to transport substances stored at low temperatures. Before transportation, the inner liner carrying the low-temperature storage substance must be pre-installed in the tank body, and then the tank body is transported by a carrier.

[0004] However, traditional inner liner lacks effective fixing measures in the tank, and the inner liner will be displaced relative to the inner wall of the tank due to external vibrations during transportation, resulting in damage. Utility Model Content

[0005] The main purpose of this utility model is to provide a support structure for the inner liner of a liquid nitrogen tank.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a liquid nitrogen tank inner liner support structure, which is used to support and fix the inner liner in the tank body, the support structure includes at least two circumferentially equidistant side support columns arranged on the inner side of the tank body and extending radially.

[0007] A locking rod that can move relative to its axial direction is concentrically inserted on the inner side of the side support column, and a locking hole that cooperates with the locking rod is opened on the outer wall of the inner liner;

[0008] The bottom side of the tank has an opening for inserting the inner liner into the tank, and a base that can be detachably installed at the bottom of the tank to close the opening;

[0009] The tank is equipped with a transmission component. When the base is installed at the bottom of the tank, the transmission component can synchronously drive the locking rod to protrude from the radial end of the side support column so as to engage with the locking hole.

[0010] Furthermore, the top of the base is provided with a docking ring concentric with the inner liner, and the outer side of the docking ring is threadedly connected to the inner side of the bottom of the tank.

[0011] Furthermore, the transmission assembly includes a transmission ring that is axially movable inside the tank body, a pressure ring that is concentrically fixed to the top of the docking ring, the top of the pressure ring and the bottom of the transmission ring having a contact-pressing fit, and a top rod parallel to the axial direction of the inner liner being provided at the position of each side support column on the top of the transmission ring, and a slope that slides and presses against the top of the corresponding top rod on the centrifugal end side of the clamping rod.

[0012] Furthermore, the inner wall of the tank near the bottom is provided with an axially extending groove, and the outer circumference of the transmission ring is slidably disposed in the groove.

[0013] Furthermore, the side support column has a rod hole at its centripetal end, a fixed plate is fixed in the rod hole, the clamping rod slides through the fixed plate, a washer is fixed on the outside of the clamping rod, and a spring is sleeved on the outside of the clamping rod between the fixed plate and the washer; the bottom of the side support column has a through hole for the top rod to pass through the rod hole.

[0014] Furthermore, at least two positioning grooves are provided along the axial direction at the position near the top of the outer peripheral sidewall of the inner liner, and the positioning grooves are for the corresponding side support columns to be slidably inserted; each locking hole is located on the sidewall of the corresponding positioning groove near the bottom of the groove.

[0015] Furthermore, the base has an axially extending bottom support column concentrically fixed at the top, and the bottom of the inner liner has a positioning groove for the top of the bottom support column to be rotatably inserted.

[0016] Furthermore, the top of the tank is provided with a vacuum sealing joint, and the top of the inner liner is provided with a neck tube that is sealed and plugged into the vacuum sealing joint.

[0017] The beneficial effects of this utility model are reflected in:

[0018] The liquid nitrogen tank inner liner support structure of this utility model is suitable for use in combined transport liquid nitrogen tanks. Before transportation, the inner liner can be automatically supported and fixed in the tank by simply using the base to install the tank at the bottom opening, and with the help of the transmission components. This ensures stability and reliability and avoids damage from impacts. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 A schematic diagram of the structure of the combined liquid nitrogen tank to which the support structure of this utility model is applied;

[0021] Figure 2 A cross-sectional structural diagram of the combined liquid nitrogen tank to which the support structure of this utility model is applied (the inner liner is in a supported and fixed state);

[0022] Figure 3 for Figure 2 Enlarged structural diagram at point A (the locking rod is inserted into the locking hole);

[0023] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0024] Figure 5 This is a schematic diagram of the supporting structure of this utility model in a non-assembled state within the tank (the inner liner is in a non-supported and fixed state);

[0025] Figure 6 for Figure 2 Schematic diagram of the inner liner;

[0026] Figure 7 for Figure 5 Enlarged structural diagram at point C (the locking rod is not engaged in the locking hole);

[0027] Figure 8 for Figure 2 A schematic diagram of the structure of the central base.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Tank body; 2. Inner liner; 3. Base; 4. Side support column; 5. Positioning groove one; 6. Bottom support column; 7. Positioning groove two; 8. Connecting ring; 9. Pressure ring; 10. Transmission ring; 11. Sliding groove; 12. Top rod; 13. Fixed plate; 14. Locking rod; 15. Locking hole; 16. Rod hole; 17. Washer ring; 18. Neck tube; 19. Vacuum sealing joint. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the scope of protection of the utility model.

[0031] Please combine Figures 1 to 8 .

[0032] A liquid nitrogen tank inner liner support structure is used to support and fix the inner liner 2 in the tank body 1. The support structure includes at least two circumferentially equidistant side support columns 4 that are arranged on the inner side of the tank body 1 and extend radially.

[0033] A locking rod 14 that can move relative to its axial direction is concentrically inserted on the inner side of the side support column 4, and a locking hole 15 that cooperates with the locking rod 14 is opened on the outer wall of the inner liner 2.

[0034] The bottom side of the tank 1 has an opening for the inner liner 2 to be inserted into the tank 1, and the bottom of the tank 1 is detachably fitted with a base 3 that can close the opening.

[0035] A transmission assembly is provided in the tank body 1. When the base 3 is installed at the bottom of the tank body 1, the transmission assembly can synchronously drive the locking rod 14 to protrude from the centripetal end of the side support column 4 so as to engage with the locking hole 15.

[0036] In a specific embodiment, during assembly, the inner liner 2 is inserted into the tank 1 through the bottom opening of the tank 1. The side support column 4 in the tank 1 provides lateral support for the inner liner 2. Then, the base 3 is installed at the bottom of the tank 1. With the use of the transmission component, the driving lever 14 protrudes from the centripetal end of the side support column 4 to be inserted into the locking hole 15, thus completing the support and fixation of the inner liner 2 in the tank 1.

[0037] The advantage of this design is that it is suitable for use in modular liquid nitrogen transport tanks. By simply using the base 3 installed at the bottom opening of the tank 1 and in conjunction with the transmission components, the inner liner 2 can be automatically supported and fixed in the tank 1, which is stable and reliable.

[0038] It should be noted that the liquid nitrogen tank of this application is mainly composed of an outer tank body 1, an inner liner 2, and a base 3 at the bottom. The top of the tank body 1 is provided with a vacuum sealing joint 19, and the top of the inner liner 2 is provided with a neck tube 18 that is sealed and inserted into the vacuum sealing joint 19. That is, when the inner liner 2 is inserted through the bottom opening of the tank body 1, the neck tube 18 at the top of the inner liner 2 will be sealed and inserted into the bottom of the vacuum sealing joint 19. The top of the vacuum sealing joint 19 has an openable and closable pressure valve.

[0039] In one embodiment, the top of the base 3 is provided with a docking ring 8 concentric with the inner liner 2, and the outer side of the docking ring 8 is threadedly connected to the inner side of the bottom of the tank body 1.

[0040] Thus, the base 3 can be installed and disassembled at the bottom of the tank 1 by threading the docking ring 8 with the bottom side of the tank 1. When the base 3 is installed at the bottom of the tank 1, the threading of the docking ring 8 with the bottom side of the tank 1 will cause the docking ring 8 to move axially toward the inner liner 2, which can serve as the driving force for the transmission component.

[0041] In one embodiment, the transmission assembly includes a transmission ring 10 that is axially movable inside the tank 1. A pressure ring 9 is concentrically fixed to the top of the docking ring 8. The top of the pressure ring 9 and the bottom of the transmission ring 10 are in contact and press-fitting contact. A top rod 12 parallel to the axial direction of the inner liner 2 is provided at the position of each side support column 4 corresponding to the position of the transmission ring 10. The centrifugal end side of the clamping rod 14 has a ramp (not shown) that slides and presses against the top of the corresponding top rod 12.

[0042] Thus, when the base 3 is screwed into the bottom of the tank 1, the docking ring 8 will axially approach the inner liner 2. The top of the docking ring 8 will press the bottom of the transmission ring 10 through the pressure ring 9, causing the transmission ring 10 to drive each push rod 12 to extend into each corresponding side support column 4. The top of the push rod 12 will press against the slope to force the locking rod 14 to protrude from the centripetal end of the side support column 4 and be locked into the corresponding locking hole 15, thereby achieving the support and fixation of the inner liner tube 2 in the tank 1.

[0043] In one embodiment, the inner sidewall of the tank 1 near the bottom is provided with an axially extending groove 11, and the outer circumferential side of the transmission ring 10 is slidably disposed in the groove 11.

[0044] Thus, the passage chute 11 can realize the axial relative movement of the transmission ring 10 inside the tank body 1.

[0045] In one embodiment, the side support column 4 has a rod hole 16 at its centripetal end, a fixed plate 13 is fixed in the rod hole 16, a locking rod 14 slides through the fixed plate 13, a washer 17 is fixed on the outside of the locking rod 14, and a spring (not shown) is sleeved on the outside of the locking rod 14 between the fixed plate 13 and the washer 17. The bottom of the side support column 4 has a through hole (not shown) for the top rod 12 to pass through the rod hole 16.

[0046] Thus, when the base 3 is screwed onto the bottom of the tank 1, the radial end of the protruding side support column 4 of the locking rod 14 drives the washer ring 17 to compress the spring. Therefore, when the base 3 is disassembled at the bottom of the tank 1, the docking ring 8 will move axially away from the inner liner 2. The top of the docking ring 8 will gradually reduce the pressure on the bottom of the pressure ring 9 until it is disengaged from the bottom of the pressure ring 9. At this time, the spring force is released, pushing the washer ring 17 and the locking rod 14 to move in the opposite direction, causing the locking rod 14 to disengage from the corresponding locking hole 15. At the same time, the locking rod 14 presses the top of the top rod 12 through its slope, forcing the top rod 12 and the transmission ring 10 to move down to the initial position.

[0047] In one embodiment, at least two positioning grooves 5 are formed axially near the top of the outer peripheral sidewall of the inner liner 2, for the corresponding side support column 4 to be slidably inserted. Each locking hole 15 is located on the sidewall of the corresponding positioning groove 5 near the bottom of the groove.

[0048] Thus, when the inner liner 2 is inserted into the tank 1 through the bottom opening, the positioning groove 5 corresponds to the side support column 4, and the side support column 4 is inserted into the positioning groove 5. The side support column 4 moves to the corresponding locking hole 15 (at this time, the top of the neck tube 18 is sealed and simultaneously connected to the bottom of the vacuum sealing joint 19). This not only facilitates the directional installation and removal of the inner liner 2 in the tank 1, but also allows the positioning groove 5, in conjunction with the side support column 4, to provide a certain lateral support for the inner liner 2.

[0049] In one embodiment, a bottom support column 6 extending axially is concentrically fixed at the top of the base 3, and a positioning groove 2 7 is provided at the bottom of the inner liner 2 for the top of the bottom support column 6 to be rotatably inserted. The outer diameter of the bottom support column 6 is smaller than the inner diameter of the positioning groove 2 7, so the base 3 can drive the bottom support column 6 to rotate relative to the positioning groove 2 7.

[0050] Thus, the bottom support column 6, in conjunction with the positioning groove 7, can provide vertical support for the inner liner 2 within the tank body 1.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0052] It should be noted that if the utility model embodiment involves directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0053] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, if the utility model embodiments involve descriptions of "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the utility model.

Claims

1. A liquid nitrogen tank liner support structure for supporting and securing the liner in the tank body, characterized by, The support structure includes at least two circumferentially equidistant side support columns (4) arranged inside the tank body (1) and extending radially; A locking rod (14) that can move relative to its axial direction is concentrically inserted on the inner side of the side support column (4), and a locking hole (15) that cooperates with the locking rod (14) is opened on the outer wall of the inner liner (2); The bottom side of the tank (1) has an opening for the inner liner (2) to be inserted into the tank (1), and the bottom of the tank (1) is detachably equipped with a base (3) that can close the opening; A transmission assembly is provided in the tank body (1). When the base (3) is installed at the bottom of the tank body (1), the transmission assembly can synchronously drive the locking rod (14) to protrude from the radial end of the side support column (4) so ​​as to lock into the locking hole (15).

2. The liquid nitrogen tank liner support structure of claim 1, wherein, The base (3) is provided with a docking ring (8) concentric with the inner liner (2) at the top, and the outer side of the docking ring (8) is threadedly connected to the inner side of the bottom of the tank (1).

3. The liquid nitrogen tank liner support structure of claim 2, wherein, The transmission assembly includes a transmission ring (10) that is axially movable inside the tank (1), a pressure ring (9) that is concentrically fixed on the top of the docking ring (8), the top of the pressure ring (9) and the bottom of the transmission ring (10) are in contact and press fit, and the top of the transmission ring (10) is provided with a top rod (12) that is parallel to the axial direction of the inner liner (2) at the position of each side support column (4), and the centrifugal end of the clamping rod (14) has a slope that slides and presses fits with the top of the corresponding top rod (12).

4. The liquid nitrogen tank liner support structure of claim 3, wherein, The inner wall of the tank (1) near the bottom is provided with an axially extending groove (11), and the outer circumference of the transmission ring (10) is slidably disposed in the groove (11).

5. The liquid nitrogen tank liner support structure of claim 3, wherein, The side support column (4) has a rod hole (16) at its centripetal end. A fixed plate (13) is fixed in the rod hole (16). The locking rod (14) slides through the fixed plate (13). A washer (17) is fixed on the outside of the locking rod (14). A spring is sleeved on the outside of the locking rod (14) between the fixed plate (13) and the washer (17). The bottom of the side support column (4) has a through hole for the top rod (12) to pass through the rod hole (16).

6. The liquid nitrogen tank liner support structure of claim 1, wherein, At least two positioning grooves (5) are provided along the axial direction at the position near the top of the outer peripheral side wall of the inner liner (2). The positioning grooves (5) are for the corresponding side support column (4) to slide and insert. Each locking hole (15) is located on the side wall near the bottom of the corresponding positioning groove (5).

7. The liquid nitrogen tank liner support structure of claim 1, wherein, The base (3) has an axially extending bottom support column (6) concentrically fixed at the top, and the bottom of the inner liner (2) has a positioning groove (7) for the top of the bottom support column (6) to be rotated and inserted.

8. The liquid nitrogen tank liner support structure of claim 1, wherein, The top of the tank body (1) is provided with a vacuum sealing joint (19), and the top of the inner liner (2) is provided with a neck tube (18) that is sealed and plugged into the vacuum sealing joint (19).

Images