Liquefied natural gas tank truck unloading mechanism

By designing clamping and squeezing mechanisms, the problem of loose connections between joints and hoses in the liquefied natural gas tanker unloading mechanism was solved, resulting in a more stable liquefied natural gas unloading process.

CN224301826UActive Publication Date: 2026-05-29SICHUAN HAICHAO DEEP BLUE OIL & GAS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN HAICHAO DEEP BLUE OIL & GAS CO LTD
Filing Date
2025-07-08
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing liquefied natural gas (LNG) tanker unloading mechanisms are prone to loosening when fixing joints and hoses, affecting the safe unloading of LNG.

Method used

The system employs a clamping mechanism and a pressing mechanism. Through the cooperation of the clamping block and the pressing block, the support ring is clamped, fixed, and pressed, ensuring a tighter connection between the support ring and the support block.

Benefits of technology

This improved the connection stability between the support ring and the support block, preventing loosening and ensuring the safety and stability of liquefied natural gas unloading.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of liquefied natural gas tank car unloading mechanisms, it is related to liquefied natural gas tank car technical field, comprising: support rod, with multiple, and multiple support rods are symmetrically set on the support block, and fixedly connected with support block;Conveying pipe, with the support ring fixed connection;Clamping mechanism, set on the support block, for clamping and fixing to support ring;Extrusion mechanism, set on the support pipe, for extruding to support ring, so that the fit of support ring and support block is more closely, stable;By setting clamping mechanism, clamping and fixing to support ring are realized, so that the connection between conveying pipe and support block is more convenient, fast;By setting extrusion mechanism, extruding and fixing to support ring are realized, so that the fit between support ring and support block is more closely, further reinforce the connection between support ring and support block, and avoid the connection between support ring and support block to produce slack.
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Description

Technical Field

[0001] This utility model relates to the field of liquefied natural gas tanker technology, and in particular to an unloading mechanism for liquefied natural gas tankers. Background Technology

[0002] A liquefied natural gas (LNG) tanker loading arm, also known as an arm-and-loader, is a material loading and unloading device that connects a tanker truck to a storage tank. It is suitable for loading and unloading LNG at cryogenic temperatures as low as -162 degrees Celsius and is widely used in LNG storage stations, peak-shaving stations, and gas filling stations. The LNG loading arm consists of three main material pipes, universal joints, and breakaway valves, ensuring a tight seal while also providing flexibility and safety.

[0003] Existing liquefied natural gas (LNG) tanker unloading mechanisms require connecting and securing the connector to the hose when unloading natural gas. The hose is typically secured by tightening screws; however, this can easily lead to insecure connections, causing the connector and hose to loosen and compromising the safe unloading of LNG. Therefore, improvements are needed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a liquefied natural gas tanker unloading mechanism, which aims to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A liquefied natural gas tanker unloading mechanism includes a support block and a support pipe, wherein the support pipe is fixedly connected to the support block; and further includes:

[0007] A delivery pipe is mounted on the support pipe and fixedly connected to the support pipe for transporting liquefied natural gas.

[0008] The support rods are multiple in number and are symmetrically arranged on the support block and fixedly connected to the support block.

[0009] The support ring is slidably connected to the support rod;

[0010] The transport pipe is fixedly connected to the support ring;

[0011] A clamping mechanism, disposed on the support block, is used to clamp and fix the support ring;

[0012] An extrusion mechanism, mounted on the support tube, is used to extrude the support ring, making the fit between the support ring and the support block tighter and more stable.

[0013] Preferably, the clamping mechanism includes:

[0014] A clamping block is disposed on the support block and fixedly connected to the support block;

[0015] A clamping shaft is disposed on the clamping block and rotatably connected to the clamping block;

[0016] A clamping disc is fixedly connected to the clamping shaft;

[0017] A sliding component is disposed on the clamping block.

[0018] Preferably, the sliding component includes:

[0019] A sliding groove is formed on the clamping block;

[0020] A sliding rod is disposed within the sliding groove and is fixedly connected to the clamping block;

[0021] The sliding block is slidably connected to the sliding groove, threadedly connected to the clamping shaft, and also slidably connected to the sliding rod;

[0022] A sliding plate is fixedly connected to the sliding block;

[0023] A rectangular plate is fixedly connected to the sliding plate;

[0024] A transmission component is disposed on the clamping block.

[0025] Preferably, the transmission component includes:

[0026] A transmission groove is formed on the clamping block;

[0027] A transmission rod is disposed within the transmission groove and is fixedly connected to the clamping block;

[0028] The transmission block is slidably connected to the transmission groove and the transmission rod, and is also threadedly connected to the clamping shaft;

[0029] A transmission plate is fixedly connected to the transmission block;

[0030] A fixed plate is fixedly connected to the transmission plate.

[0031] Preferably, the extrusion mechanism includes:

[0032] An extrusion block is disposed on the support tube and fixedly connected to the support tube;

[0033] The extrusion shaft is fixedly connected to the extrusion block;

[0034] The extrusion screw block is mounted on the extrusion shaft and is fixedly connected to the extrusion shaft;

[0035] A movable component is disposed within the extrusion block.

[0036] Preferably, the moving component includes:

[0037] A movable groove is formed within the extrusion block;

[0038] There are two movable rods, which are symmetrically arranged in the movable groove and fixedly connected to the extrusion block;

[0039] A movable plate is mounted on the movable rod, slidably connected to the movable rod, slidably connected to the movable groove, and threadedly connected to the extrusion shaft;

[0040] A connecting component is disposed on the extrusion block.

[0041] Preferably, the connecting component includes:

[0042] A connecting groove is formed on the extrusion block;

[0043] The connecting block is slidably connected to the connecting groove and fixedly connected to the movable plate;

[0044] The connecting rod is fixedly connected to the connecting block;

[0045] The connecting plate is fixedly connected to the connecting rod.

[0046] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0047] By setting up a clamping mechanism, the support ring is clamped and fixed, making the connection between the transport pipe and the support block more convenient and faster. By setting up a squeezing mechanism, the support ring is squeezed and fixed, making the fit between the support ring and the support block tighter, further strengthening the connection between the support ring and the support block, and preventing the connection between the support ring and the support block from loosening. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A three-dimensional structural schematic diagram of an unloading mechanism for liquefied natural gas tank trucks is shown.

[0050] Figure 2 A three-dimensional cross-sectional structural diagram of a liquefied natural gas tanker unloading mechanism is shown.

[0051] Figure 3 An exploded perspective view of a liquefied natural gas tanker unloading mechanism is shown.

[0052] Figure 4 An exploded view of the extrusion mechanism of a liquefied natural gas tanker unloading mechanism is shown.

[0053] Figure 5 An exploded view of the clamping mechanism of a liquefied natural gas tanker unloading mechanism is shown.

[0054] Legend:

[0055] 1. Support block; 2. Support pipe; 3. Conveying pipe; 4. Support rod; 5. Support ring; 6. Conveying pipe; 7. Clamping block; 8. Clamping shaft; 9. Clamping disc; 10. Sliding groove; 11. Sliding rod; 12. Sliding block; 13. Sliding plate; 14. Rectangular plate; 15. Transmission groove; 16. Transmission rod; 17. Transmission block; 18. Transmission plate; 19. Fixing plate; 20. Extrusion block; 21. Extrusion shaft; 22. Extrusion screw block; 23. Moving groove; 24. Moving rod; 25. Moving plate; 26. Connecting groove; 27. Connecting block; 28. Connecting rod; 29. ​​Connecting plate. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0057] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] Reference Figures 1 to 5 The present invention provides a further description of an embodiment of a liquefied natural gas tanker unloading mechanism.

[0061] A liquefied natural gas (LNG) tanker unloading mechanism includes a support block 1 and a support pipe 2, with the support pipe 2 fixedly connected to the support block 1. It also includes: a conveying pipe 3, disposed on and fixedly connected to the support pipe 2, for conveying LNG; multiple support rods 4 symmetrically arranged on the support block 1 and fixedly connected to it; a support ring 5 slidably connected to the support rods 4; a transport pipe 6 fixedly connected to the support ring 5; a clamping mechanism disposed on the support block 1 for clamping and fixing the support ring 5; and a compression mechanism disposed on the support pipe 2 for compressing the support ring 5, resulting in a tighter and more stable fit between the support ring 5 and the support block 1.

[0062] Reference Figure 5 In a preferred embodiment, the clamping mechanism includes: a clamping block 7, which is disposed on the support block 1 and fixedly connected to the support block 1; a clamping shaft 8, which is disposed on the clamping block 7 and rotatably connected to the clamping block 7; a clamping disc 9, which is fixedly connected to the clamping shaft 8; and a sliding component, which is disposed on the clamping block 7.

[0063] During operation, rotating the clamping disk 9 causes the clamping shaft 8, which is fixedly connected to the clamping disk 9, to rotate on the clamping block 7.

[0064] Reference Figure 5In a preferred embodiment, the sliding component includes: a sliding groove 10 formed on the clamping block 7; a sliding rod 11 disposed in the sliding groove 10 and fixedly connected to the clamping block 7; a sliding block 12 slidably connected to the sliding groove 10 and threadedly connected to the clamping shaft 8, and also slidably connected to the sliding rod 11; a sliding plate 13 fixedly connected to the sliding block 12; and a rectangular plate 14 fixedly connected to the sliding plate 13 and disposed on the clamping block 7.

[0065] During operation, the sliding block 12, which is threadedly connected to the clamping shaft 8, rotates, causing the sliding block 12 to slide within the sliding groove 10, and then slides on the sliding rod 11, thereby causing the rectangular plate 14, which is fixedly connected to the sliding plate 13, to move closer to the support ring 5.

[0066] Reference Figure 5 In a preferred embodiment, the transmission component includes: a transmission groove 15 formed on the clamping block 7; a transmission rod 16 disposed in the transmission groove 15 and fixedly connected to the clamping block 7; a transmission block 17 slidably connected to the transmission groove 15 and the transmission rod 16, and threadedly connected to the clamping shaft 8; a transmission plate 18 fixedly connected to the transmission block 17; and a fixing plate 19 fixedly connected to the transmission plate 18.

[0067] During operation, the transmission block 17, which is threadedly connected to the clamping shaft 8, rotates, causing the transmission block 17 to slide on the transmission rod 16, which in turn causes the transmission plate 18 to move the fixed plate 19 until the rectangular plate 14 and the fixed plate 19 are in contact with the surface of the support ring 5.

[0068] Reference Figure 4 In a preferred embodiment, the extrusion mechanism includes: an extrusion block 20, which is disposed on the support tube 2 and fixedly connected to the support tube 2; an extrusion shaft 21, which is fixedly connected to the extrusion block 20; an extrusion screw block 22, which is disposed on the extrusion shaft 21 and fixedly connected to the extrusion shaft 21; and a moving component disposed inside the extrusion block 20.

[0069] During operation, rotating the extrusion screw block 22 causes the extrusion shaft 21, which is fixedly connected to the extrusion screw block 22, to rotate on the extrusion block 20.

[0070] Reference Figure 4 In a preferred embodiment, the moving component includes: a moving groove 23, which is formed within the extrusion block 20; two moving rods 24, which are symmetrically arranged within the moving groove 23 and fixedly connected to the extrusion block 20; a moving plate 25, which is disposed on the moving rods 24, slidably connected to the moving rods 24, slidably connected to the moving groove 23, and threadedly connected to the extrusion shaft 21; and a connecting component, which is disposed on the extrusion block 20.

[0071] During operation, the movable plate 25, which is threadedly connected to the extrusion shaft 21, rotates, causing the movable plate 25 to slide within the movable groove 23, and thus the movable plate 25 slides on the movable rod 24.

[0072] Reference Figure 4 In a preferred embodiment, the connecting component includes: a connecting groove 26 formed on the extrusion block 20; a connecting block 27 slidably connected to the connecting groove 26 and fixedly connected to the moving plate 25; a connecting rod 28 fixedly connected to the connecting block 27; and a connecting plate 29 fixedly connected to the connecting rod 28.

[0073] During operation, the connecting block 27, which is fixedly connected to the moving plate 25, slides in the connecting groove 26, causing the connecting plate 29, which is fixedly connected to the connecting rod 28, to move closer to the surface of the support ring 5 until the connecting plate 29 and the surface of the support ring 5 are in contact.

[0074] Working principle: In use, first place the transport tank into the support block 1, then align the support ring 5 with the support rod 4, so that the support ring 5 slides on the support rod 4 until the support ring 5 is in contact with the support block 1. Then rotate the clamping disk 9, which drives the clamping shaft 8 fixedly connected to the clamping disk 9 to rotate on the clamping block 7, so that the sliding block 12 threadedly connected to the clamping shaft 8 rotates, which drives the sliding block 12 to slide in the sliding groove 10, so that the sliding block 12 slides on the sliding rod 11, thereby driving the rectangular plate 14 fixedly connected to the sliding plate 13 to move closer to the support ring 5, so that the transmission block 17 threadedly connected to the clamping shaft 8 rotates, which drives the transmission block 17 to slide on the transmission rod 16, so that the transmission plate 18 drives the fixed plate 19 to move until the rectangular plate 14 and the fixed plate 19 are in contact with the surface of the support ring 5, thereby achieving the clamping and fixing of the support ring 5.

[0075] Next, rotating the extrusion screw block 22 causes the extrusion shaft 21, which is fixedly connected to the extrusion screw block 22, to rotate on the extrusion block 20. This causes the moving plate 25, which is threadedly connected to the extrusion shaft 21, to rotate, causing the moving plate 25 to slide in the moving groove 23. This causes the moving plate 25 to slide on the moving rod 24, thereby causing the connecting block 27, which is fixedly connected to the moving plate 25, to slide in the connecting groove 26. This causes the connecting plate 29, which is fixedly connected to the connecting rod 28, to move closer to the surface of the support ring 5 until the connecting plate 29 is in contact with the surface of the support ring 5. This achieves the extrusion and fixation of the support ring 5, preventing the connection between the hose and the support pipe 2 from loosening when unloading natural gas.

[0076] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquefied natural gas tanker unloading mechanism, comprising a support block (1) and a support pipe (2), wherein the support pipe (2) is fixedly connected to the support block (1); characterized in that, Also includes: A conveying pipe (3) is installed on the support pipe (2) and is fixedly connected to the support pipe (2) for conveying liquefied natural gas; There are multiple support rods (4), and the multiple support rods (4) are symmetrically arranged on the support block (1) and fixedly connected to the support block (1); The support ring (5) is slidably connected to the support rod (4); The transport pipe (6) is fixedly connected to the support ring (5); A clamping mechanism is provided on the support block (1) for clamping and fixing the support ring (5); The extrusion mechanism is installed on the support tube (2) to extrude the support ring (5), so that the support ring (5) and the support block (1) fit more tightly and stably.

2. The liquefied natural gas tanker unloading mechanism according to claim 1, characterized in that, The clamping mechanism includes: A clamping block (7) is disposed on the support block (1) and is fixedly connected to the support block (1); A clamping shaft (8) is disposed on the clamping block (7) and is rotatably connected to the clamping block (7); The clamping disc (9) is fixedly connected to the clamping shaft (8); A sliding component is disposed on the clamping block (7).

3. The liquefied natural gas tanker unloading mechanism according to claim 2, characterized in that, The sliding component includes: A sliding groove (10) is formed on the clamping block (7); A sliding rod (11) is disposed in the sliding groove (10) and fixedly connected to the clamping block (7); The sliding block (12) is slidably connected to the sliding groove (10), threadedly connected to the clamping shaft (8), and also slidably connected to the sliding rod (11); The sliding plate (13) is fixedly connected to the sliding block (12); A rectangular plate (14) is fixedly connected to the sliding plate (13); The transmission component is disposed on the clamping block (7).

4. The liquefied natural gas tanker unloading mechanism according to claim 3, characterized in that, The transmission component includes: A transmission groove (15) is formed on the clamping block (7); The transmission rod (16) is disposed in the transmission groove (15) and is fixedly connected to the clamping block (7); The transmission block (17) is slidably connected to the transmission groove (15), slidably connected to the transmission rod (16), and threadedly connected to the clamping shaft (8); The transmission plate (18) is fixedly connected to the transmission block (17); The fixing plate (19) is fixedly connected to the transmission plate (18).

5. The liquefied natural gas tanker unloading mechanism according to claim 4, characterized in that, The extrusion mechanism includes: An extrusion block (20) is disposed on the support tube (2) and fixedly connected to the support tube (2); The extrusion shaft (21) is fixedly connected to the extrusion block (20); The extrusion screw block (22) is disposed on the extrusion shaft (21) and is fixedly connected to the extrusion shaft (21); The movable component is disposed within the extrusion block (20).

6. The liquefied natural gas tanker unloading mechanism according to claim 5, characterized in that, The movable component includes: A movable groove (23) is formed within the extrusion block (20); There are two movable rods (24), and the two movable rods (24) are symmetrically arranged in the movable groove (23) and fixedly connected to the extrusion block (20); The movable plate (25) is mounted on the movable rod (24), is slidably connected to the movable rod (24), is slidably connected to the movable groove (23), and is also threadedly connected to the extrusion shaft (21); A connecting component is disposed on the extrusion block (20).

7. The liquefied natural gas tanker unloading mechanism according to claim 6, characterized in that, The connecting component includes: A connecting groove (26) is formed on the extrusion block (20); The connecting block (27) is slidably connected to the connecting groove (26) and fixedly connected to the moving plate (25); The connecting rod (28) is fixedly connected to the connecting block (27); The connecting plate (29) is fixedly connected to the connecting rod (28).