CN219198871U

CN219198871U - Gas cylinder bottleneck reinforcing ring structure

Info

Publication number: CN219198871U
Application number: CN202223533612.6U
Authority: CN
Inventors: 马锐; 刘扬涛; 王大为; 孙万利; 费鹏志; 徐宁; 杨圣; 邵逸馨
Original assignee: Shenyang Zhongfu Kejin Pressure Vessels Co ltd
Current assignee: Shenyang Zhongfu Kejin Pressure Vessels Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-16
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a gas cylinder bottle mouth reinforcing ring structure, which comprises an aluminum alloy inner container and a carbon fiber winding layer, wherein the carbon fiber winding layer is wound and assembled on the outer wall of the aluminum alloy inner container, threads are formed on the outer wall of the bottle mouth of the aluminum alloy inner container, a stainless steel neck ring is assembled on the outer wall of the bottle mouth of the aluminum alloy inner container in a screwed mode, corresponding threaded holes are formed on the outer surface of the outer neck ring and the outer surface of the inner neck ring in a screwed mode, and fastening screws are screwed in the threaded holes.

Description

Gas cylinder bottleneck reinforcing ring structure

Technical Field

The utility model belongs to the technical field of hydrogen storage pressure containers, and particularly provides a bottle mouth reinforcing ring structure of a gas bottle.

Background

Hydrogen storage is an important link of hydrogen energy utilization, and hydrogen storage technology is also a key technology for promoting the application and development of hydrogen and fuel cell technology in the fields of transportation, power generation and the like. Along with the development of hydrogen energy and the increase of the requirements of a high-pressure hydrogen storage technology on the bearing capacity of a container, the vehicle-mounted application of the metal lining fiber winding gas cylinder is wider because the material density of the metal lining fiber winding gas cylinder manufacturing liner and the protective layer is low, the gas cylinder is light in weight and high in unit-mass hydrogen storage density, and therefore, the vehicle-mounted application of the metal lining fiber winding gas cylinder is wider by virtue of the advantages of improving the safety, lightening the weight, improving the unit-mass hydrogen storage density and the like. However, the carbon fiber winding gas cylinder is complicated in stress state at the bottleneck position of the gas cylinder, and is subjected to shearing stress and axial stress, and the traditional bottleneck structure enables the shearing stress to be completely concentrated at the root part of the bottleneck so that the bottleneck is easy to break. There is a need for a cylinder neck finish stiffener ring structure that enhances the load carrying capacity of the cylinder.

Disclosure of Invention

In order to solve the problems, the utility model provides a bottle mouth reinforcing ring structure of a gas bottle.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a gas cylinder bottleneck strengthening ring structure, includes aluminum alloy inner bag and carbon fiber winding layer, carbon fiber winding layer winding assembly is in the outer wall of aluminum alloy inner bag, the bottleneck department outer wall of aluminum alloy inner bag is seted up the screw thread, bottleneck department outer wall spiro union of aluminum alloy inner bag is equipped with the stainless steel neck ring.

The stainless steel collar comprises an outer collar, an inner collar and an auxiliary connecting structure, wherein the inner end of the inner surface of the outer collar is provided with a matched threaded groove with the outer end of the outer surface of the inner collar, the outer collar is in threaded connection with the inner collar, the auxiliary connecting structure is respectively assembled at the inner end of the outer collar and the outer end of the inner collar, the inner surfaces of the outer collar and the inner collar are both in threaded connection with threads of an aluminum alloy liner, the outer surface of the inner collar is integrally formed with an annular bulge, the outer surfaces of the outer collar and the inner collar are provided with corresponding threaded holes, the threaded holes are in threaded connection with fastening screws, and the inner ends of the fastening screws are tightly attached to the outer wall of the aluminum alloy liner.

Further, the inner end of the inner collar is expanded outwards, the inner end of the inner collar is smoothly transited to the outer wall of the bottom of the bottle mouth, and the outer end of the carbon fiber winding layer is wound on the outer wall of the inner end of the inner collar.

Further, the outer end of the carbon fiber winding layer is positioned on the inner side of the annular protrusion.

Further, auxiliary connection structure includes cavity annular slab and annular slab, the even fixed mounting of outer end of annular slab has spacing post, and the outer end fixed mounting of spacing post in the inner wall of cavity annular slab, the outer end of cavity annular slab and the inner symmetry fixed mounting of annular slab have a cylinder, the ring channel corresponding with the cylinder has all been seted up to the inner of outside collar, the inner wall of outside collar thread groove, the outer end of inboard collar and the inner wall of inboard collar thread groove.

Further, the inner end of the fastening screw is conical.

Further, the outer surface of the fastening screw is smeared with thread fastening glue.

The beneficial effects of using the utility model are as follows:

1. according to the utility model, the annular bulge is designed on the stainless steel collar to form an embedded structure, meanwhile, the stainless steel collar is arranged at the opening of the aluminum alloy inner container through threads, and the stainless steel collar is provided with the fastening screw for assisting in fixing the stainless steel collar.

2. According to the utility model, the stainless steel collar is connected with the inner collar through the threads and the fastening screws, so that the connection stability of the outer collar and the inner collar is ensured, the stability of the stainless steel collar in the mounting of the aluminum alloy inner collar is enhanced by utilizing the double-layer threaded connection mode, and the protection performance of the stainless steel collar is enhanced.

Drawings

FIG. 1 is a front cross-sectional view of an aluminum alloy liner of the present utility model after the carbon fiber wrap and the stainless steel collar are assembled.

Fig. 2 is a front cross-sectional view of the assembly of the stainless steel collar and aluminum alloy liner of the present utility model.

Fig. 3 is a front cross-sectional view of the stainless steel collar of the present utility model.

Fig. 4 is an enlarged view of a portion a of fig. 2 in accordance with the present utility model.

The reference numerals include: 1. the aluminum alloy inner container comprises an aluminum alloy inner container, 2 carbon fiber winding layers, 3, a stainless steel collar, 31, an outer collar, 32, an inner collar, 33, annular protrusions, 34, an auxiliary connecting structure, 341, hollow annular plates, 342, annular plates, 343, limiting columns, 344, a cylinder, 35, threaded holes, 4 and fastening screws.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, a gas cylinder bottleneck reinforcing ring structure comprises an aluminum alloy inner container 1 and a carbon fiber winding layer 2, wherein the carbon fiber winding layer 2 is wound and assembled on the outer wall of the aluminum alloy inner container 1, threads are formed on the outer wall of the bottleneck of the aluminum alloy inner container 1, and a stainless steel collar 3 is assembled on the outer wall of the bottleneck of the aluminum alloy inner container 1 in a threaded manner.

The stainless steel neck ring 3 protects the bottleneck of the aluminum alloy liner 1 and is used for transmitting the load of the bottleneck of the aluminum alloy liner 1, so that the axial stress and the circumferential stress of the bottleneck are improved, the bottleneck is not easy to break, and the strength and the service life of the bottleneck are improved.

The carbon fiber winding layer 2 is wound outside the whole bottle body and plays a bearing role.

As shown in fig. 2 to 4, the stainless steel collar 3 includes an outer collar 31, an inner collar 32 and an auxiliary connection structure 34, the inner end of the inner surface of the outer collar 31 and the outer end of the outer surface of the inner collar 32 are provided with matched threaded grooves, the outer collar 31 and the inner collar 32 are in threaded connection, two groups of auxiliary connection structures 34 are respectively assembled at the inner end of the outer collar 31 and the outer end of the inner collar 32, the inner surfaces of the outer collar 31 and the inner collar 32 are both in threaded connection with the threads of the aluminum alloy liner 1, the outer surface of the inner collar 32 is integrally formed with an annular protrusion 33, the outer surfaces of the outer collar 31 and the inner collar 32 are provided with corresponding threaded holes 35, the threaded holes 35 are in threaded connection with fastening screws 4, and the inner ends of the fastening screws 4 are tightly attached to the outer wall of the aluminum alloy liner 1.

The thread groove of the outer collar 31 is screwed into the thread groove of the inner collar 32, and the outer collar 31 and the inner collar 32 are further connected through the fastening screw 4, so that the integral strength of the stainless steel collar 3 is improved.

The inner surface of the outer collar 31 and the inner surface of the inner collar 32 are both in threaded connection with the threads of the aluminum alloy liner 1, namely, the stainless steel collar 3 is arranged on the aluminum alloy liner 1 through double-layer threads, so that the firmness of the installation of the stainless steel collar 3 is improved.

The stainless steel collar 3 is fixed in an auxiliary mode on the aluminum alloy liner 1 through the fastening screw 4, and the stability of the stainless steel collar 3 is further enhanced.

Specifically, as shown in fig. 1 and 2, the inner end of the inner collar 32 expands outwards, and the inner end of the inner collar 32 smoothly transits to the outer wall of the bottom of the bottle mouth, so that the stress of the stainless steel collar 3 is smoother, and the strength of the stainless steel collar is improved.

The outer end of the carbon fiber wrapping layer 2 is wrapped around the outer wall of the inner end of the inner collar 32.

Specifically, as shown in fig. 1, the outer end of the carbon fiber wound layer 2 is located inside the annular protrusion 33.

The annular protrusion 33 serves to transmit hoop load of the finish root while limiting the axial winding position when the carbon fiber winding layer 2 is spirally wound.

Specifically, as shown in fig. 4, the auxiliary connection structure 34 includes a hollow annular plate 341 and an annular plate 342, the outer end of the annular plate 342 is uniformly and fixedly provided with a limiting post 343, the outer end of the limiting post 343 is fixedly provided with an inner wall of the hollow annular plate 341, the outer end of the hollow annular plate 341 and the inner end of the annular plate 342 are symmetrically and fixedly provided with a cylindrical barrel 344, and annular grooves corresponding to the cylindrical barrel 344 are formed in the inner end of the outer collar 31, the inner wall of the thread groove of the outer collar 31, the outer end of the inner collar 32 and the inner wall of the thread groove of the inner collar 32.

The auxiliary connection structure 34 is capable of rotating relative to the outer collar 31 and the inner collar 32, respectively, without impeding the rotation of the outer collar 31 and the inner collar 32.

The hollow annular plate 341 and the annular plate 342 are made of elastic metal and can be pressed inwards to shrink so that the threaded holes 35 of the outer collar 31 and the inner collar 32 can be aligned when the outer collar 31 and the inner collar 32 are installed.

Specifically, as shown in fig. 4, the inner end of the fastening screw 4 is tapered.

Specifically, the outer surface of the fastening screw 4 is coated with a screw-thread fastening adhesive, so that the fastening screw 4 is fixed in position in the screw hole 35 without loosening.

The end face of the bottle mouth of the aluminum alloy liner 1 is at least left with a margin of 5mm, and the end face of the bottle mouth is processed after the stainless steel collar 3 is arranged.

After the stainless steel collar 3 is assembled, internal threads of the aluminum alloy liner 1 are machined.

The foregoing is merely exemplary of the present utility model, and many variations may be made in the specific embodiments and application scope of the utility model by those skilled in the art based on the spirit of the utility model, as long as the variations do not depart from the gist of the utility model.

Claims

1. The utility model provides a gas cylinder bottleneck strengthening ring structure, includes aluminum alloy inner bag (1) and carbon fiber winding layer (2), carbon fiber winding layer (2) winding assembly is in the outer wall of aluminum alloy inner bag (1), its characterized in that: the outer wall of the bottleneck of the aluminum alloy inner container (1) is provided with threads, and the outer wall of the bottleneck of the aluminum alloy inner container (1) is in threaded connection with a stainless steel collar (3);

stainless steel neck ring (3) include outside neck ring (31), inboard neck ring (32) and auxiliary connection structure (34), the assorted screw thread groove has been seted up with the surface outer end of inboard neck ring (32) to the internal surface inner of outside neck ring (31), and outside neck ring (31) and inboard neck ring (32) threaded connection, two sets of auxiliary connection structure (34) assemble respectively in the inner of outside neck ring (31) and the outer end of inboard neck ring (32), the equal spiro union of internal surface of outside neck ring (31) and inboard neck ring (32) is on the screw thread of aluminum alloy inner bag (1), the surface integrated into one piece of inboard neck ring (32) has annular protruding (33), corresponding screw hole (35) have been seted up with the surface of inboard neck ring (32) to outside neck ring (31), screw-in hole (35) spiro union has fastening screw (4), and the inner of fastening screw (4) hugs closely in the outer wall of aluminum alloy inner bag (1).

2. The cylinder neck finish stiffener ring structure of claim 1, wherein: the inner end of the inner collar (32) expands outwards, the inner end of the inner collar (32) smoothly transits to the outer wall of the bottom of the bottle mouth, and the outer end of the carbon fiber winding layer (2) is wound on the outer wall of the inner end of the inner collar (32).

3. The cylinder neck finish stiffener ring structure of claim 1, wherein: the outer end of the carbon fiber winding layer (2) is positioned on the inner side of the annular bulge (33).

4. The cylinder neck finish stiffener ring structure of claim 1, wherein: the auxiliary connection structure (34) comprises a hollow annular plate (341) and an annular plate (342), wherein a limiting column (343) is uniformly and fixedly arranged at the outer end of the annular plate (342), the outer end of the limiting column (343) is fixedly arranged on the inner wall of the hollow annular plate (341), a cylinder barrel (344) is fixedly arranged at the outer end of the hollow annular plate (341) and the inner end of the annular plate (342), and annular grooves corresponding to the cylinder barrel (344) are formed in the inner end of the outer collar (31), the inner wall of a threaded groove of the outer collar (31), the outer end of the inner collar (32) and the inner wall of a threaded groove of the inner collar (32).

5. The cylinder neck finish stiffener ring structure of claim 1, wherein: the inner end of the fastening screw (4) is conical.

6. The cylinder neck finish stiffener ring structure of claim 1, wherein: the outer surface of the fastening screw (4) is smeared with thread fastening glue.