Liquid hydrogen filling device

Abstract

The utility model discloses a liquid hydrogen filling device, and relates to the technical field of filling devices. The device comprises a filling gun, a connecting pipe is arranged on one side of the filling gun, first fixing plates are arranged on the two sides of the connecting pipe, second fixing plates are fixedly installed on one sides of the two first fixing plates, the two second fixing plates are hinged, a first connecting plate is fixedly installed on the side, away from the second fixing plates, of the upper first fixing plate, and a second connecting plate is fixedly installed on the side, away from the second fixing plates, of the lower first fixing plate. A second connecting plate is fixedly installed on the side, away from the second fixing plate, of the first fixing plate located on the lower portion, the second connecting plate, the first connecting plate and the second fixing plate are located on the edge of the first fixing plate, and a plurality of evenly-distributed circular grooves are formed in the middle of the first connecting plate and the middle of the second connecting plate. According to the utility model, the joint of the connecting pipe and the filling gun is protected, and the situation that the connecting pipe is bent, the joint of the filling gun and the connecting pipe is damaged and the use is influenced due to the fact that the column adding gun is too heavy is prevented.

Description

Technical Field

[0001] This utility model relates to the field of refueling device technology, specifically a liquid hydrogen refueling device. Background Technology

[0002] Liquid hydrogen is a colorless, odorless, high-energy cryogenic liquid fuel obtained by cooling hydrogen gas. The normal boiling point of hydrogen at one atmosphere is 20.37K (-252.78℃), and its freezing point is 13.96K (-259.19℃). Liquid hydrogen is mainly used in applications such as drones, heavy trucks, and hydrogen fuel cell reactors. It is typically stored in liquid hydrogen storage tanks and is mainly used at hydrogen refueling stations. When refueling liquid hydrogen, it is usually done through a refueling gun. However, there is no protective device at the connection between the refueling gun and the connecting pipe. Due to the weight of the refueling gun, the connection between the pipe and the gun is prone to bending, leading to pipe damage and affecting the use of the refueling gun. Utility Model Content

[0003] To address the problem that the lack of a protective device at the connection between the filling gun and the connecting tube, coupled with the excessive weight of the filling gun, easily causes bending at the connection point, leading to damage to the connecting tube and affecting the use of the filling gun, the purpose of this utility model is to provide a liquid hydrogen filling device.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a liquid hydrogen refueling device, including a refueling gun, a connecting pipe provided on one side of the refueling gun, first fixing plates provided on both sides of the connecting pipe, a second fixing plate fixedly installed on one side of each of the two first fixing plates, the two second fixing plates being hinged together, a first connecting plate fixedly installed on the side of the upper first fixing plate away from the second fixing plate, and a second connecting plate fixedly installed on the side of the lower first fixing plate away from the second fixing plate, the second connecting plate, the first connecting plate, and the second fixing plate being located on the edge of the first fixing plate. At the edge, the middle of the first connecting plate and the second connecting plate are provided with several evenly distributed circular grooves. A fixing plate is fixedly installed inside the circular groove. The fixing plate is located in the circular groove of the first connecting plate. A spring is fixedly installed at the top of the fixing plate. A top plate is fixedly installed at the top of the spring. The middle of the top plate and the fixing plate is rotatably connected by the same guide rod. Two symmetrically distributed limiting rods are fixedly installed at the bottom of the guide rod. The middle of the first connecting plate and the second connecting plate are provided with limiting grooves on both sides of the circular groove to cooperate with the limiting rods. A handle is fixedly installed at the top of the guide rod.

[0005] Preferably, rubber pads are fixedly installed on the opposite inner sides of both first fixing plates.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0007] 1. This application provides protection at the connection between the connecting pipe and the filling gun, preventing the connecting pipe from bending due to the excessive weight of the filling gun, which could cause damage to the connection between the filling gun and the connecting pipe and affect its use;

[0008] 2. This application provides protection for the connecting pipe to prevent the first fixing plate from damaging the connecting pipe. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the internal structure of the first connecting plate and the second connecting plate in this utility model.

[0013] Figure 4 This is a schematic diagram of the connection structure between the circular groove and the first baffle in this utility model.

[0014] Figure 5 This is a schematic diagram of the connection structure between the second connecting plate and the semi-circular groove in this utility model.

[0015] In the diagram: 1. Filling gun; 11. Connecting pipe; 2. First fixing plate; 21. Second fixing plate; 22. First connecting plate; 23. Second connecting plate; 3. Rubber pad; 4. Circular groove; 41. Fixing plate; 42. Spring; 43. Top plate; 44. Guide rod; 45. Limiting rod; 46. Limiting groove; 47. Handle; 5. Circular groove; 6. Semicircular groove; 7. Placement groove; 8. First baffle; 81. Second baffle. Detailed Implementation

[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figure 1-5 As shown, this utility model provides a liquid hydrogen refueling device, including a refueling gun 1. A connecting pipe 11 is provided on one side of the refueling gun 1. First fixing plates 2 are provided on both sides of the connecting pipe 11. Second fixing plates 21 are fixedly installed on one side of each of the two first fixing plates 2. The two second fixing plates 21 are hinged together. A first connecting plate 22 is fixedly installed on the side of the upper first fixing plate 2 away from the second fixing plate 21. A second connecting plate 23 is fixedly installed on the side of the lower first fixing plate 2 away from the second fixing plate 21. The second connecting plate 23, the first connecting plate 22, and the second fixing plate 21 are located at the edge of the first fixing plate 2. Several evenly distributed circular grooves 4 are opened in the middle of the first connecting plate 22 and the second connecting plate 23. A fixing plate 41 is fixedly installed inside the circular grooves 4. The fixing plate 41 is located in the circular grooves 4 on the first connecting plate 22.

[0018] A spring 42 is fixedly installed at the top of the fixed plate 41, and a top plate 43 is fixedly installed at the top of the spring 42. The top plate 43 and the fixed plate 41 are rotatably connected by the same guide rod 44. Two symmetrically distributed limit rods 45 are fixedly installed at the bottom of the guide rod 44. Limiting grooves 46 that cooperate with the limit rods 45 are opened on both sides of the circular groove 4 in the middle of the first connecting plate 22 and the second connecting plate 23. A handle 47 is fixedly installed at the top of the guide rod 44.

[0019] Rubber pads 3 are fixedly installed on the inner sides of the two first fixing plates 2.

[0020] The circular groove 4 in the second connecting plate 23 is shorter than the circular groove 4 in the first connecting plate 22, which makes it easier to fix the first connecting plate 22 and the second connecting plate 23.

[0021] The second connecting plate 23 has a circular groove 5 in the middle. The diameter of the circular groove 5 is larger than that of the circular groove 4. By setting the circular groove 5, it is easy for the guide rod 44 and the limiting rod 45 to rotate, and the first connecting plate 22 and the second connecting plate 23 are fixed together.

[0022] The middle part of the second connecting plate 23 has two symmetrically distributed semi-circular grooves 6 on both sides of the circular groove 4. The semi-circular grooves 6 and the limiting groove 46 form a cross shape. By setting the semi-circular grooves 6, it is easier to fix the limiting rod 45, and the first connecting plate 22 and the second connecting plate 23 are fixed together more stably.

[0023] A first baffle 8 is fixedly installed on one side edge of the inner side of the circular groove 5, corresponding to the edge of one of the semicircular grooves 6. A second baffle 81 is fixedly installed on the other side edge of the inner side of the circular groove 5, corresponding to the edge of one of the limiting grooves 46. By setting the first baffle 8 and the second baffle 81, when the handle 47 is turned, the limiting rod 45 and the guide rod 44 are driven to rotate. When the limiting rod 45 is in contact with the first baffle 8, it indicates that the semicircular groove 6 corresponds to the limiting rod 45. Then, the handle 47 is released, and the limiting rod 45 is inserted into the corresponding semicircular groove 6 under the action of the spring 42. When the limiting rod 45 is in contact with the second baffle 81, it indicates that the limiting rod 45 corresponds to the limiting groove 46. The guide rod 44 and the limiting rod 45 can be taken out from the circular groove 4 in the second connecting plate 23, so that the first connecting plate 22 and the second connecting plate 23 are not fixed together, thereby separating the two first fixing plates 2 and removing them from the connecting tube 11.

[0024] The top of the first connecting plate 22 has several evenly distributed placement slots 7, and each top plate 43 and handle 47 is located in the placement slot 7. By setting the placement slots 7, it is easier to place the top plate 43 and handle 47.

[0025] Each handle 47 is made of plastic, making it easier to turn the handle 47 and increasing the friction between the hand and the handle 47.

[0026] Working principle: In actual use, when it is necessary to fix the two first fixing plates 2 to the outside of the connection between the connecting tube 11 and the filling gun 1, firstly, insert the connecting tube 11 into the rubber pad 3 in the lower first fixing plate 2. When inserting it into the rubber pad 3, the connecting tube 11 needs to be straightened, and one side of the first fixing plate 2 should be aligned with the connection between the filling gun 1 and the connecting tube. Then, rotate the upper second fixing plate 21 so that the circular grooves 4 on the first connecting plate 22 and the second connecting plate 23 correspond, and insert the guide rod 44 and the limiting rod 45 into the corresponding circular grooves 4 and limiting grooves 46. When the first connecting plate 22... When the second connecting plate 23 is in contact with the top plate 43, the handle 47 is rotated while the top plate 43 spring 42 is pressed down to retract, so that the top plate 43 is in contact with the inner wall surface of the placement groove 7. Then, by rotating the handle 47, the limiting rod 45 is in contact with the first baffle 8. Then, the handle 47 is released, and under the action of the spring 42, the limiting rod 45, the guide rod 44, and the top plate 43 are driven to move upward, so that the limiting rod 45 is inserted into the corresponding semi-circular groove 6, thereby fixing the first connecting plate 22 on the upper first fixing plate 2 and the second connecting plate 23 on the lower first fixing plate 2 together, thus protecting the connecting pipe 11.

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A liquid hydrogen filling device, comprising a filling gun (1), characterized in that: A connecting pipe (11) is provided on one side of the filling gun (1), and first fixing plates (2) are provided on both sides of the connecting pipe (11). A second fixing plate (21) is fixedly installed on one side of the two first fixing plates (2), and the two second fixing plates (21) are hinged to each other. A first connecting plate (22) is fixedly installed on the side of the first fixing plate (2) located at the top and away from the second fixing plate (21), and a second connecting plate (23) is fixedly installed on the side of the first fixing plate (2) located at the bottom and away from the second fixing plate (21). The second connecting plate (23), the first connecting plate (22), and the second fixing plate (21) are located at the edge of the first fixing plate (2), and a plurality of evenly distributed circular grooves (4) are opened in the middle of the first connecting plate (22) and the second connecting plate (23). A fixing plate (41) is fixedly installed inside the circular groove (4), and the fixing plate (41) is located in the circular groove (4) on the first connecting plate (22); A spring (42) is fixedly mounted on the top of the fixed plate (41), a top plate (43) is fixedly mounted on the top of the spring (42), a guide rod (44) is rotatably passed through the middle of the top plate (43) and the fixed plate (41), two symmetrically distributed limiting rods (45) are fixedly mounted on the bottom of the guide rod (44), limiting grooves (46) for use with the limiting rods (45) are provided on both sides of the circular groove (4) in the middle of the first connecting plate (22) and the second connecting plate (23), and a handle (47) is fixedly mounted on the top of the guide rod (44).

2. A liquid hydrogen filling device according to claim 1, characterized in that: Rubber pads (3) are fixedly mounted on the opposite inner sides of the two first fixing plates (2).

3. A liquid hydrogen filling device as claimed in claim 1, characterized in that: The circular groove (4) in the second connecting plate (23) is shorter than the circular groove (4) in the first connecting plate (22).

4. A liquid hydrogen filling device as claimed in claim 1, characterized in that: A circular groove (5) is provided in the middle of the second connecting plate (23), and the diameter of the circular groove (5) is greater than the diameter of the circular groove (4).

5. A liquid hydrogen filling device as claimed in claim 1, characterized in that: The middle part of the second connecting plate (23) is provided with two symmetrically distributed semicircular grooves (6) on both sides of the circular groove (4), and the semicircular grooves (6) and the limiting grooves (46) are in a cross shape.

6. A liquid hydrogen filling device as claimed in claim 4, characterized in that: A first baffle (8) is fixedly mounted on the inner edge of one side of the circular groove (5), and the first baffle (8) corresponds to the edge of one of the semicircular grooves (6). A second baffle (81) is fixedly mounted on the inner edge of the other side of the circular groove (5), and the second baffle (81) corresponds to the edge of one of the limiting grooves (46).

7. A liquid hydrogen filling device as claimed in claim 1, characterized in that: A plurality of evenly distributed placement grooves (7) are provided at the top end of the first connecting plate (22), and each of the top plates (43) and handles (47) is located in a placement groove (7).

8. A liquid hydrogen filling device as claimed in claim 1, characterized in that: Each handle (47) is made of plastic.

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