CN219120328U

CN219120328U - Inner container mouth structure of composite material gas cylinder

Info

Publication number: CN219120328U
Application number: CN202320109831.7U
Authority: CN
Inventors: 梁新民; 张晓冰; 吴凯锋; 张�浩
Original assignee: Shandong Chanyan Haikong Composite Material Co ltd
Current assignee: Shandong Chanyan Haikong Composite Material Co ltd
Priority date: 2023-01-23
Filing date: 2023-01-23
Publication date: 2023-06-02
Anticipated expiration: 2033-01-23

Abstract

The utility model relates to a liner bottle mouth structure of a composite material gas bottle, which belongs to the technical field of pressure containers and comprises a gas bottle body and a bottle mouth arranged at one end of the gas bottle body, wherein a connecting pipe is connected to the outside of the bottle mouth, and a butt joint accessory is arranged in the connecting pipe; the butt joint accessory is in sealing butt joint with the bottle mouth through an elastic sheet arranged on the inner wall of the connecting pipe, and a contact capable of changing the shape of the elastic sheet and then withdrawing from the connecting pipe is further arranged on the butt joint accessory. The abutting accessory forms sealing abutting joint with the bottle mouth after extruding the elastic sheet, so that the problem of uneven contact pressure in the traditional screw-joint extrusion sealing is avoided; after the use, the butt joint accessory is rotated, and the elastic piece is jacked up through the contact, so that the butt joint accessory can be taken out from the connecting pipe, and the convenience of disassembly and assembly and the use reliability are improved.

Description

Inner container mouth structure of composite material gas cylinder

Technical Field

The utility model belongs to the technical field of pressure containers, and particularly relates to a liner opening structure of a composite material gas cylinder.

Background

The storage and transportation container of the high-pressure gas is usually a metal container, and is widely applied due to the fact that the storage and transportation container is firm in outside, convenient to obtain materials and simple in manufacturing process. However, the gas cylinder of the metal container may be subjected to a large stress and may be easily corroded.

Along with the progress of the production process, the materials of the high-pressure gas storage and transportation container are changed newly, and the liner made of plastic materials is the body of the gas storage bottle. The plastic bottle body made of the composite material is widely accepted because of the characteristics of high volume-weight ratio, corrosion resistance, long service cycle and wider application range, and the plastic bottle body is easier to manufacture and form in the production and manufacturing processes. That is, the plastic bottle body cannot generate stress corrosion and hydrogen embrittlement, and the product is safer; the plastic bottle body has higher toughness, and the whole gas bottle has better deformation coordination capability under the action of alternating stress, and the fatigue life can reach more than 45000 times.

In order to ensure the requirements of rigidity and strength, the plastic gas bottle is in butt joint with the bottle mouth part of the gas bottle, so that the sealing reliability of the butt joint part can be ensured, and the gas in the plastic gas bottle is prevented from leaking in the using process. In the prior art, the butt joint mode of the metal part and the plastic gas cylinder is mostly in threaded connection, and the threaded connection has the advantage of simplicity and convenience in operation, but the conditions of wire withdrawal and uneven sealing pressure are easy to occur.

Disclosure of Invention

The utility model provides a liner mouth structure of a composite material gas cylinder, which aims to solve the problem that the sealing pressure is not uniform in the conventional threaded butt joint of the gas cylinder and a metal part.

The utility model is realized by the following technical scheme:

the inner liner bottle mouth structure of the composite material gas cylinder comprises a gas cylinder body and a bottle mouth arranged at one end of the gas cylinder body, wherein a connecting pipe is connected to the outside of the bottle mouth, and a butt joint accessory is arranged in the connecting pipe; the butt joint accessory is in sealing butt joint with the bottle mouth through an elastic sheet arranged on the inner wall of the connecting pipe, and the butt joint accessory is also provided with a contact capable of changing the shape of the elastic sheet and then withdrawing from the connecting pipe.

The abutting accessory forms sealing abutting joint with the bottle mouth after extruding the elastic sheet, so that the problem of uneven contact pressure in the traditional screw-joint extrusion sealing is avoided; after the use, the butt joint accessory is rotated, and the elastic piece is jacked up through the contact, so that the butt joint accessory can be taken out from the connecting pipe, and the convenience of disassembly and assembly and the use reliability are improved.

In addition, the elastic sheets are uniformly distributed on the inner wall of the connecting pipe in an inclined manner, and gaps are reserved between the adjacent elastic sheets. The gaps between the elastic sheets and the adjacent elastic sheets can ensure the entering of the butt joint accessory and the rebound strength of the elastic sheets.

Further improvement of the utility model is that the outer wall of the butt joint accessory is provided with an annular convex ring matched with the bottom of the elastic piece. The annular bulge loop is matched and supported with the bottom of the elastic piece, so that the butt joint of the butt joint accessory and the bottle mouth is avoided.

A further development of the utility model provides that the number of contacts is the same as the number of elastic tabs and that the contacts are distributed evenly over the annular raised ring. Through the cooperation of contact and elastic piece, guarantee to push up every elastic piece, take out the butt joint annex in the connecting pipe smoothly.

The utility model further improves that the elastic sheet is provided with a guide groove matched with the contact, and the guide groove penetrates through the peripheral edge of the elastic sheet to point to and stop at the middle part of the elastic sheet. The contact is jacked up through the guide way with the elastic piece and provides the motion track, reduces the operation degree of difficulty with the elastic piece jack-up.

The utility model further improves that the height of the outer surface of the contact protruding butt joint accessory is larger than that of the outer surface of the annular protruding ring protruding butt joint accessory; the diameter of the contact is smaller than the gap between adjacent elastic sheets. When the elastic piece is jacked up by the contact, the annular raised ring can be freely separated from the connecting pipe.

The utility model further improves that the lower end face of the butt joint accessory is provided with an embedded groove corresponding to the bottle mouth, and a sealing ring is arranged in the embedded groove. The sealing ring and the bottle mouth form a more sealing effect.

The utility model further improves that the periphery of the bottle mouth is provided with a concave part concavely arranged on the surface of the gas cylinder body. The structural strength of the gas cylinder body arranged at the periphery of the bottle opening can be effectively improved through the concave part.

From the technical scheme, the beneficial effects of the utility model are as follows: the abutting accessory forms sealing abutting joint with the bottle mouth after extruding the elastic sheet, so that the problem of uneven contact pressure in the traditional screw-joint extrusion sealing is avoided; after the use, the butt joint accessory is rotated, and the elastic piece is jacked up through the contact, so that the butt joint accessory can be taken out from the connecting pipe, and the convenience of disassembly and assembly and the use reliability are improved.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic view of a first structure of a connection pipe according to an embodiment of the present utility model.

Fig. 3 is a schematic view showing a second structure of a connection pipe according to an embodiment of the present utility model.

Fig. 4 is a schematic view of a docking accessory according to an embodiment of the present utility model.

In the accompanying drawings: 1. the gas cylinder comprises a gas cylinder body 11, a bottle mouth 12, a tail cone 13, a concave part 2, a connecting pipe 21, an elastic piece 22, a guide groove 3, a butt joint accessory 31, an annular protruding ring 32, a contact point 33, an embedded groove 34 and a sealing ring.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

As shown in fig. 1-4, the inner liner bottle mouth structure of the composite material gas bottle comprises a gas bottle body 1 and a bottle mouth 11 arranged at one end of the gas bottle body 1, wherein a concave part 13 concavely arranged on the surface of the gas bottle body 1 is arranged on the periphery of the bottle mouth 11. The structural strength of the gas cylinder body 1 arranged at the periphery of the bottle opening 11 can be effectively improved through the concave part 13.

The bottle mouth 11 is externally connected with a connecting pipe 2. The connecting pipe 2 is in threaded connection with the bottle mouth 11. That is to say, the lower part of the outer wall of the bottle mouth 11 is provided with a first thread section, and the lower part of the inner wall of the connecting pipe 2 is provided with a second thread section matched with the first thread section. The connection firm strength of the two parts is ensured through the threaded connection of the connecting pipe 2 and the bottle mouth 11.

A butt joint accessory 3 is arranged in the connecting pipe 2; the butt joint accessory 3 is in sealing butt joint with the bottle mouth 11 through an elastic sheet 21 arranged on the inner wall of the connecting pipe 2, and the butt joint accessory 3 is also provided with a contact 32 which can change the shape of the elastic sheet 21 and then withdraw from the connecting pipe 2. The butt joint accessory 3 forms sealing butt joint with the bottle mouth 11 after extruding the elastic sheet 21, so that the problem of uneven contact pressure in the traditional screw joint extrusion sealing is avoided; after the use, the butt-joint accessory 3 is rotated, and the elastic piece 21 is pushed up through the contact 32, so that the butt-joint accessory 3 can be taken out from the connecting pipe 2, and the convenience of disassembly and assembly and the use reliability are improved.

The lower end face of the butt joint accessory 3 is provided with an embedded groove 33 corresponding to the bottle mouth 11, and a sealing ring 34 is arranged in the embedded groove 33. A more sealing effect is created with the mouth 11 by the sealing ring 34.

The elastic pieces 21 are provided with a plurality of elastic pieces 21 which are uniformly distributed on the inner wall of the connecting pipe 2 in an inclined manner, and gaps are reserved between the adjacent elastic pieces 21. The plurality of elastic pieces 21 and the gaps between the adjacent elastic pieces 21 can ensure the entry of the docking accessory 3 and the rebound strength of the elastic pieces 21.

An annular raised ring 31 matched with the bottom of the elastic piece 21 is arranged on the outer wall of the abutting attachment 3. The annular raised ring 31 is matched and supported with the bottom of the elastic piece 21, so that the butt joint of the butt joint accessory 3 and the bottle mouth 11 is avoided.

The number of contacts 32 is the same as the number of elastic pieces 21, and the contacts 32 are uniformly distributed over the annular raised ring 31. By the cooperation of the contact points 32 and the elastic pieces 21, each elastic piece 21 can be pushed open, and the butt-joint accessory 3 can be taken out of the connecting pipe 2 smoothly.

The elastic sheet 21 is provided with a guide groove 22 matched with the contact 32, and the guide groove 22 passes through the peripheral edge of the elastic sheet 21 to point to and stop at the middle part of the elastic sheet 21. The guide groove 22 provides a moving track for the contact 32 to push the elastic piece 21 open, so that the operation difficulty of pushing the elastic piece 21 open is reduced.

The height of the contact 32 protruding out of the outer surface of the abutting attachment 3 is larger than the height of the annular protruding ring 31 protruding out of the outer surface of the abutting attachment 3; the diameter of the contact 32 is smaller than the gap between adjacent elastic pieces 21. The annular raised ring 31 is free to disengage from the connecting tube 2 when the contact 32 lifts the elastic piece 21.

The end of the gas cylinder body 1 opposite to the bottle mouth 11 is provided with a tail cone 12. So as to be positioned when the fiber winding is performed outside the cylinder body 1.

According to the liner bottle mouth structure of the composite material gas bottle, the butt joint accessory extrudes the elastic sheet and then forms sealing butt joint with the bottle mouth, so that the problem of uneven contact pressure in the traditional screw joint extrusion sealing is avoided; after the use, the butt joint accessory is rotated, and the elastic piece is jacked up through the contact, so that the butt joint accessory can be taken out from the connecting pipe, and the convenience of disassembly and assembly and the use reliability are improved.

In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.

The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present utility model and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended 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. The inner liner bottle mouth structure of the composite material gas cylinder comprises a gas cylinder body (1) and a bottle mouth (11) arranged at one end of the gas cylinder body (1), and is characterized in that a connecting pipe (2) is connected to the outside of the bottle mouth (11), and a butt joint accessory (3) is arranged in the connecting pipe (2);

the butt joint accessory (3) is in sealing butt joint with the bottle mouth (11) through an elastic sheet (21) arranged on the inner wall of the connecting pipe (2), and the butt joint accessory (3) is also provided with a contact (32) which can change the shape of the elastic sheet (21) and then withdraw from the connecting pipe (2).

2. The liner mouth structure of a composite gas cylinder according to claim 1, wherein a plurality of elastic sheets (21) are provided, the plurality of elastic sheets (21) are uniformly distributed on the inner wall of the connecting pipe (2) in an inclined shape, and gaps are left between adjacent elastic sheets (21).

3. The liner mouth structure of a composite gas cylinder according to claim 2, wherein the outer wall of the abutting fitting (3) is provided with an annular raised ring (31) which is matched with the bottom of the elastic piece (21).

4. A liner mouth structure of a composite gas cylinder according to claim 3, wherein the number of contacts (32) is equal to the number of elastic pieces (21), and the contacts (32) are uniformly distributed over the annular raised ring (31).

5. The liner mouth structure of a composite gas cylinder according to claim 4, wherein the elastic sheet (21) is provided with a guide groove (22) which is matched with the contact (32), and the guide groove (22) passes through the peripheral edge of the elastic sheet (21) to point to and stop at the middle part of the elastic sheet (21).

6. The liner mouth structure of a composite material gas cylinder according to any one of claims 2 to 5, wherein the height of the contact (32) protruding from the outer surface of the abutment fitting (3) is greater than the height of the annular protruding ring (31) protruding from the outer surface of the abutment fitting (3); the diameter of the contact (32) is smaller than the gap between adjacent elastic pieces (21).

7. The liner mouth structure of the composite gas cylinder according to claim 1, wherein an embedded groove (33) corresponding to the bottle mouth (11) is arranged on the lower end surface of the butt joint accessory (3), and a sealing ring (34) is arranged in the embedded groove (33).

8. The liner mouth structure of the composite gas cylinder according to claim 1, wherein the periphery of the bottle mouth (11) is provided with a concave part (13) concavely arranged on the surface of the gas cylinder body (1).