Rotary joint structure for winding IV-type hydrogen storage bottle liner
By designing the rotary joint structure, the buckling collapse problem caused by fiber tension during the winding of the hydrogen storage bottle inner liner is solved, and the efficient winding and inflation of the hydrogen storage bottle inner liner is achieved simultaneously, improving the winding efficiency.
Patent Information
- Application Number
- CN202422606575.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-28
AI Technical Summary
During the winding process of the inner liner of the Type IV hydrogen storage bottle, the plastic liner collapses due to fiber tension, which affects the synchronization of winding and inflation.
A rotary joint structure is designed, including the joint body and the joint shell. By rotating the bearings relatively, combined with the L-shaped air hole and the inflation hole, the synchronous movement of the high-pressure inflation and the winding shaft is achieved, ensuring the smooth winding of the inner liner during the inflation process.
The winding and inflation of the inner liner of the hydrogen storage bottle is achieved, which improves the winding efficiency, avoids the bending and collapse of the inner liner, and ensures the inflation effect.
Smart Images
Figure CN223165399U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of winding of the inner liner of type-IV hydrogen storage cylinders, and particularly relates to a rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder. Background Technique
[0002] Hydrogen storage technology is a key technology in the development of hydrogen energy. The plastic of type-IV hydrogen storage cylinders has become a research hotspot around the world due to its light weight and fatigue resistance. During the winding process of type-IV cylinders, the tension of the fibers will cause the plastic inner liner to buckle and collapse, affecting the winding and performance of the inner liner. Therefore, it is necessary to pressurize the inside of the plastic inner liner to eliminate the problem of inner liner buckling and collapse.
[0003] In order not to affect the synchronous progress of winding and inflation of the inner liner of the type-IV hydrogen storage cylinder, a rotary joint structure needs to be set at the joint of the inner liner of the type-IV hydrogen storage cylinder without affecting the inflation effect. Therefore, we propose a rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder. Content of the Utility Model
[0004] The purpose of the utility model is to provide a rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder to solve the problems put forward in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder. The rotary joint structure is installed on the winding shaft at one end of the inner liner of the type-IV hydrogen storage cylinder and includes a joint main body and a joint housing. The joint housing is sleeved on the joint main body. Bearings are arranged at the connection parts at both ends of the joint main body and the joint housing. The joint main body and the joint housing perform relative rotational movement through the bearings.
[0006] An L-shaped air hole is opened in the joint main body. The joint main body is connected and communicated with the winding shaft. An inflation hole communicated with the L-shaped air hole is opened on the joint housing. The inflation hole is externally connected to a high-pressure inflation pipeline.
[0007] Preferably, flange plates are arranged at the opposite ends of the joint main body and the winding shaft. The two flange plates are locked and connected by bolts and nuts, and are hermetically connected by a gasket between the two flange plates.
[0008] Preferably, a ventilation hole is opened in the winding shaft, and the ventilation hole is communicated with the L-shaped air hole.
[0009] Preferably, a plurality of sealing rings are arranged at the connection part of the joint main body and the joint housing, and the plurality of sealing rings are distributed outside the L-shaped air hole.
[0010] Preferably, limit snap rings are arranged on the outer sides of both ends at the connection part of the joint main body and the joint housing.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] The present utility model is provided with a joint body, a joint housing, a bearing, an L-shaped air hole and an inflation hole. During use, the inflation hole is externally connected to a high-pressure inflation pipeline. The high-pressure inflation pipeline starts to inflate through the inflation hole. The high-pressure gas enters the L-shaped air hole through the inflation hole, and then enters the inner liner of the type-IV hydrogen storage bottle through the ventilation hole on the winding shaft, realizing the inflation of the inner liner of the type-IV hydrogen storage bottle. And during the inflation process, the winding and rotation of the inner liner of the type-IV hydrogen storage bottle can be realized. At this time, the inner liner of the type-IV hydrogen storage bottle drives the joint body to rotate through the winding shaft. The joint body and the joint housing perform relative rotational movement through the bearing, thereby realizing the inflation while winding of the inner liner of the type-IV hydrogen storage bottle, ensuring the rapid progress of the winding process of the inner liner of the type-IV hydrogen storage bottle and improving the winding efficiency of the inner liner of the type-IV hydrogen storage bottle. Description of the Drawings
[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0014] Figure 2 is a front view structural schematic diagram of the present utility model;
[0015] Figure 3 is a three-dimensional structural schematic diagram of the present utility model;
[0016] Figure 4 is a sectional structural schematic diagram of the present utility model.
[0017] In the figure: 1. Inner liner of the type-IV hydrogen storage bottle; 2. Winding shaft; 3. Joint body; 4. Joint housing; 5. Bearing; 6. L-shaped air hole; 7. Inflation hole; 8. Flange; 9. Sealing ring. Detailed Embodiments
[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0019] Please refer to Figures 1-4, the rotary joint structure wound on the inner liner of the Type-IV hydrogen storage cylinder provided by the present utility model is installed on the winding shaft 2 at one end of the inner liner 1 of the Type-IV hydrogen storage cylinder, and includes a joint body 3 and a joint housing 4. Flange plates 8 are provided at the facing ends of the joint body 3 and the winding shaft 2, and the two flange plates 8 are locked and connected by bolts and nuts, and are hermetically connected by a gasket between the two flange plates 8. The joint housing 4 is sleeved on the joint body 3, and bearings 5 are provided at the two ends of the connection between the joint body 3 and the joint housing 4. The joint body 3 and the joint housing 4 perform relative rotational movement through the bearings 5;
[0020] An L-shaped air hole 6 is provided in the joint body 3. The joint body 3 is connected and communicated with the winding shaft 2. An air vent hole is provided in the winding shaft 2, and the air vent hole is communicated with the L-shaped air hole 6. An inflation hole 7 communicated with the L-shaped air hole 6 is provided on the joint housing 4, and the inflation hole 7 is externally connected to a high-pressure inflation pipeline.
[0021] The present utility model is provided with a joint body 3, a joint housing 4, bearings 5, an L-shaped air hole 6 and an inflation hole 7. During use, the inflation hole 7 is externally connected to a high-pressure inflation pipeline. The high-pressure inflation pipeline starts to inflate through the inflation hole 7. High-pressure gas enters the L-shaped air hole 6 through the inflation hole 7, and then enters the inner liner of the Type-IV hydrogen storage cylinder through the air vent hole on the winding shaft 2, realizing the inflation of the inner liner of the Type-IV hydrogen storage cylinder. And during the inflation process, the winding and rotation of the inner liner of the Type-IV hydrogen storage cylinder can be realized. At this time, the inner liner 1 of the Type-IV hydrogen storage cylinder drives the joint body 3 to rotate through the winding shaft 2, and the joint body 3 and the joint housing 4 perform relative rotational movement through the bearings 5, thereby realizing the inflation while winding of the inner liner 1 of the Type-IV hydrogen storage cylinder, ensuring the rapid progress of the winding process of the inner liner 1 of the Type-IV hydrogen storage cylinder, and improving the winding efficiency of the inner liner 1 of the Type-IV hydrogen storage cylinder.
[0022] In this embodiment, as Figure 4 shown, a plurality of sealing rings 9 are provided at the connection between the joint body 3 and the joint housing 4. The plurality of sealing rings 9 are distributed outside the L-shaped air hole 6 to improve the sealing performance between the joint body 3 and the joint housing 4 and prevent gas leakage.
[0023] In this embodiment, limit snap rings are provided on the outer sides at both ends of the connection between the joint body 3 and the joint housing 4 to prevent axial offset of the joint body 3 and the joint housing 4.
[0024] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder, characterized in that, The rotary joint structure is installed on the winding shaft (2) at one end of the inner liner (1) of the type-IV hydrogen storage cylinder, and includes a joint body (3) and a joint housing (4). The joint housing (4) is sleeved on the joint body (3). Bearings (5) are provided at the connection parts at both ends of the joint body (3) and the joint housing (4). The joint body (3) and the joint housing (4) perform relative rotational movement through the bearings (5). An L-shaped air hole (6) is formed in the joint body (3). The joint body (3) is connected and communicated with the winding shaft (2). An inflation hole (7) communicated with the L-shaped air hole (6) is formed in the joint housing (4). The inflation hole (7) is externally connected to a high-pressure inflation pipeline.
2. The rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder according to claim 1, characterized in that: Flange plates (8) are provided at the opposite ends of the joint body (3) and the winding shaft (2). The two flange plates (8) are tightly connected by bolts and nuts, and are hermetically connected through a gasket between the two flange plates (8).
3. The rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder according to claim 1, wherein: An air vent is formed in the winding shaft (2), and the air vent is communicated with the L-shaped air hole (6).
4. The rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder according to claim 1, wherein: A plurality of sealing rings (9) are provided at the connection part of the joint body (3) and the joint housing (4), and the plurality of sealing rings (9) are distributed outside the L-shaped air hole (6).
5. A rotary joint structure for winding the inner liner of a type-IV hydrogen storage cylinder according to claim 1, characterized in that: Limit retaining rings are provided on the outer sides at both ends of the connection part of the joint body (3) and the joint housing (4).