Inner container supporting tool

Abstract

The utility model relates to an inner container supporting tool which comprises a rod seat assembly and a supporting rod assembly, the rod seat assembly comprises a hollow rod structure with an opening in the first end, and the hollow rod structure is provided with a matching section matched with a valve seat in a sealing mode; the supporting rod assembly comprises a moving rod and a supporting structure, the first end of the moving rod is arranged in the hollow rod structure in a penetrating mode, the second end of the moving rod is located outside the hollow rod structure, the first end of the supporting structure is fixed to the first end of the hollow rod structure, and the second end of the supporting rod is located at the second end of the moving rod; the moving rod can move in the axial direction of the hollow rod structure so that the supporting structure can be in an unfolded supporting state or a folded state. According to the technical scheme, the problem that in the prior art, when the inner container and the valve seat are assembled, the inner container is prone to deformation is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of container support, and in particular, to an inner liner support tool. Background Art

[0002] The development of hydrogen storage cylinders has a history of more than 50 years, and is divided into four types: all-metal cylinders (Type I), metal liner fiber hoop-wrapped cylinders (Type II), metal liner fiber fully wrapped cylinders (Type III), non-metal liner fiber fully wrapped cylinders (Type IV). Type I and Type II cylinders are relatively heavy and difficult to meet the unit mass hydrogen storage density requirements. Compared with Type III cylinders, Type IV cylinders generally use a non-metallic liner such as plastic and an external carbon fiber winding manufacturing method, which makes the cylinders lighter, lower cost, and higher mass hydrogen storage density. They are easy to commercialize and have a wider range of applications.

[0003] The main structure of Type IV gas cylinders consists of the following parts: 1) non-metallic liner; 2) metal valve seat; 3) sealing structure; 4) bottle valve / tail valve; 5) carbon fiber + resin. The non-metallic liner is a rotating shell with a hollow interior. According to the different liner molding processes, it can be divided into four process routes: injection molding + welding, rotational molding, blow molding, injection molding + extrusion + welding. Among them, the route involving injection molding process requires processing two identical "head sections", and then welding the head sections to each other / welding the head sections to the extrusion tube to form the liner.

[0004] The end caps at both ends of the liner are provided with openings, and the structure of the openings matches the structure of the valve seat. The valve seat can be integrally formed with the liner during the liner forming stage, or assembled to the liner after the liner is formed.

[0005] For the structure assembled after the inner liner is formed, in order to fix the position between the valve seat and the inner liner and prevent the two from rotating relative to each other, the two are usually bonded and fixed. However, during the bonding process, the inventors found that

[0006] The opening and shoulder of the inner liner sink and deform, making it difficult to ensure the quality of bonding and posing a risk of affecting product safety. Utility Model Content

[0007] The present application provides an inner liner supporting tool to solve the problem in the prior art that the inner liner is easily deformed when being assembled with a valve seat.

[0008] According to the present application, an inner liner supporting tool is provided, including: a rod seat assembly, the rod seat assembly includes a hollow rod structure with an opening at the first end, the hollow rod structure has a mating section that seals with a valve seat; a support rod assembly, the support rod assembly includes a moving rod and a supporting structure, the first end of the moving rod is inserted into the hollow rod structure, the second end of the moving rod is located outside the hollow rod structure, the first end of the supporting structure is fixed to the first end of the hollow rod structure, and the second end of the supporting structure is located at the second end of the moving rod; the moving rod can move along the axial direction of the hollow rod structure so that the supporting structure has an open supporting state, or a retracted folded state.

[0009] Furthermore, the hollow rod structure also has a limiting boss, and the limiting boss is located on one side of the matching section close to the second end of the hollow rod structure.

[0010] Furthermore, the hollow rod structure also includes an operating section and a force-applying section. The force-applying section forms the second end of the hollow rod structure. The operating section is located between the force-applying section and the limiting boss. The operating section has a long hole, which extends along the axial direction of the hollow rod structure. The support rod assembly also includes an operating part, which is inserted into the long hole and connected to the moving rod.

[0011] Furthermore, the operating section also has a fixing hole, which is located at one end of the long hole close to the force-applying section and extends along the circumference of the hollow rod structure.

[0012] Furthermore, the liner supporting tool also includes a first sealing structure, which is arranged between the hollow rod structure and the moving rod, and the first sealing structure is located between the long hole and the first end of the hollow rod structure.

[0013] Furthermore, the first sealing structure includes a first sealing ring, the inner wall of the hollow rod structure is provided with a first sealing groove, and the first sealing ring is partially located in the first sealing groove.

[0014] Furthermore, the hollow rod structure also includes a sealing rod section, which is located between the mating section and the second end of the hollow rod structure, and the outer diameter of the sealing rod section is smaller than the outer diameter of the mating section. The liner support tool also includes a second sealing structure, which is located at the sealing rod section.

[0015] Furthermore, the liner supporting tool also includes a third sealing structure, the hollow rod structure also includes an operating rod segment and a force rod segment, the force rod segment forms the second end of the hollow rod structure, and the third sealing structure is arranged in the operating rod segment and is located between the first end of the moving rod and the force rod segment.

[0016] Furthermore, the support structure also includes a plurality of support rods, which are arranged at intervals along the circumference of the first end of the hollow rod structure, and each support rod is a whole elastic rod, or each support rod is composed of a plurality of rod segments.

[0017] Furthermore, when each support rod is composed of multiple rod segments, the support rod includes a first rod segment and a second rod segment, the first end of the first rod segment is rotatably connected to the outer wall of the first end of the hollow rod structure, the second end of the first rod segment is rotatably connected to the first end of the second rod segment, and the second end of the second rod segment is rotatably connected to the second end of the movable rod.

[0018] By applying the technical solution of the present application, when in use, the inner liner support tool with the support structure in a folded state is extended into the valve seat, and after the matching section of the hollow rod structure is sealed with the valve seat, the support structure of the inner liner support tool is in an open support state, and the support structure supports the inner liner, so that when the inner liner is operated, the inner liner is not easily deformed. The technical solution of the present application effectively solves the problem in the prior art that the inner liner is easily deformed when it is assembled with the valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 A schematic diagram showing a supporting state of an inner liner supporting tool according to an embodiment of the present application is shown;

[0022] Figure 2 Shows Figure 1 A schematic diagram of a folded state of an inner liner supporting tool;

[0023] Figure 3 Shows Figure 1 A schematic diagram of the structure of the inner liner supporting tool matching the inner liner;

[0024] Figure 4 A schematic diagram of the workflow of the liner support tool of the present application is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Rod seat assembly; 11. Hollow rod structure; 111. Matching rod section; 112. Limiting boss; 113. Operating rod section; 114. Force-applying rod section; 115. Sealing rod section; 20. Support rod assembly; 21. Moving rod; 22. Support structure; 23. Operating part; 30. Inner liner; 40. Valve seat; 50. First sealing structure; 60. Third sealing structure. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0030] As described in the background technology, the use of the bonding method in the prior art often causes the inner liner opening and shoulder to sink and deform. The inventors have found that the root cause of the problem is that the bonding methods in the prior art all require pressure on the inner liner, and the above problems will occur during the pressure application process. Specifically, in the prior art, the following bonding methods are usually used to bond and fix the valve seat to the inner liner: 1) Install the valve seat on the winding shaft (the winding shaft is fixed on the winding machine); 2) Apply glue evenly on the matching surface of the valve seat and the inner liner; 3) Clamp the inner liner and align the through hole of the inner liner bottle mouth and the valve seat; 4) Apply pressure in the axial direction to complete the gluing and fixing of the valve seat and the inner liner. Among them, the valve seat material is generally aluminum alloy or stainless steel, and the inner liner material is generally PA (polyamide) or HDPE (high-density polyethylene). In actual operation, these inner liner materials are relatively fragile, but the valve seat material has a higher hardness. Therefore, when external force is applied from the outside, it is easy to cause the inner liner to deform.

[0031] Based on this, this solution effectively solves the problem of the inner liner being easily deformed in the above-mentioned prior art without adjusting or changing the inner liner material. The details of this solution are as follows:

[0032] like Figures 1 to 3As shown, the liner support tool of this embodiment includes: a rod seat assembly 10 and a support rod assembly 20. The rod seat assembly 10 includes a hollow rod structure 11 with an opening at the first end, and the hollow rod structure 11 has a matching rod section 111 that is sealed with the valve seat 40. The support rod assembly 20 includes a moving rod 21 and a support structure 22, the first end of the moving rod 21 is inserted into the hollow rod structure 11, the second end of the moving rod 21 is located outside the hollow rod structure 11, the first end of the support structure 22 is fixed to the first end of the hollow rod structure 11, and the second end of the support structure 22 is located at the second end of the moving rod 21. The moving rod 21 can move along the axial direction of the hollow rod structure 11, so that the support structure 22 has an open support state, or a retracted folded state.

[0033] By applying the technical solution of the present application, when in use, the inner liner supporting tool with the supporting structure 22 in a folded state is extended into the valve seat 40, and after being sealed with the valve seat 40 through the matching rod section 111 of the hollow rod structure 11, the supporting structure 22 of the inner liner supporting tool is placed in an open supporting state, and the supporting structure 22 supports the inner liner 30, so that when the inner liner 30 is operated, the inner liner 30 is not easily deformed.

[0034] It should be noted that, in this embodiment, the mating mode of the mating rod section 111 is thread mating. Figure 4 .

[0035] like Figures 1 to 4 As shown, in the technical solution of this embodiment, the hollow rod structure 11 also has a limiting boss 112, and the limiting boss 112 is located on one side of the matching rod section 111 close to the second end of the hollow rod structure 11. The limiting boss 112 plays a role of abutting against the valve seat 40 (bottle valve seat), so that on the one hand, it can be obtained whether the hollow rod structure 11 is installed in place, and on the other hand, it plays a role of limiting the position of the hollow rod structure 11 and the valve seat 40. It should be noted that the outer diameter of the limiting boss 112 is the same as the outer diameter of the valve seat 40.

[0036] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the hollow rod structure 11 also includes an operating rod segment 113 and a force-applying rod segment 114. The force-applying rod segment 114 forms the second end of the hollow rod structure 11. The operating rod segment 113 is located between the force-applying rod segment 114 and the limiting boss 112. The operating rod segment 113 has a long hole, which extends along the axial direction of the hollow rod structure 11. The support rod assembly 20 also includes an operating portion 23, which is inserted into the long hole and connected to the moving rod 21. The setting of the operating rod segment 113 facilitates the setting of the operating portion 23 and the long hole, so that the operator can easily operate the axial movement of the moving rod 21. The force-applying rod segment 114 facilitates the operator to operate and apply force to the hollow rod structure 11. It should be noted that in this embodiment, the outer surface of the force-applying rod segment 114 is a regular hexagon.

[0037] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the operating rod segment 113 also has a fixing hole, which is located at one end of the long hole close to the force-applying rod segment 114 and extends along the circumference of the hollow rod structure 11. When the support structure 22 is in a supporting state, the operating part 23 is moved into the fixing hole, so that the support structure 22 will not fold, and the operator does not need to operate the operating part 23 all the time. The operating part 23 is a convex column, the first end of the convex column is fixedly connected to the moving rod 21, and the second end of the convex column is located outside the hollow rod structure 11. It should be noted that the rotational deformation of the operating part 23 is small, and the support structure 22 can adapt to the deformation.

[0038] In the technical solution of this embodiment, the liner support tool further includes a first sealing structure 50, which is disposed between the hollow rod structure 11 and the moving rod 21, and the first sealing structure 50 is located between the long hole and the first end of the hollow rod structure 11. When the liner 30 is filled with a certain pressure gas, the first sealing structure 50 can prevent the gas in the liner 30 from leaking.

[0039] In the technical solution of this embodiment, the first sealing structure 50 includes a first sealing ring, the inner wall of the hollow rod structure 11 is provided with a first sealing groove, and the first sealing ring is partially located in the first sealing groove. The above structure is easy to process and easy to operate. It should be noted that in order to achieve a better sealing effect, the first sealing structure 50 also includes a second sealing ring, the inner wall of the hollow rod structure 11 is provided with a second sealing groove, the second sealing groove and the first sealing groove are arranged at intervals along the axial direction of the hollow rod structure 11, and the second sealing ring is partially located in the second groove.

[0040] like Figure 1 and Figure 3 As shown, in the technical solution of this embodiment, the hollow rod structure 11 further includes a sealing rod segment 115, which is located between the matching rod segment 111 and the second end of the hollow rod structure 11, and the outer diameter of the sealing rod segment 115 is smaller than the outer diameter of the matching rod segment 111, and the liner support tool further includes a second sealing structure, which is located in the sealing rod segment 115. The second sealing structure can seal between the hollow rod structure 11 and the liner 30. It should be noted that the outer wall of the sealing rod segment 115 has an annular groove, and part of the second sealing structure is located in the annular groove.

[0041] like Figures 1 to 3As shown, in the technical solution of this embodiment, the support structure 22 also includes a plurality of support rods, which are arranged at intervals along the circumference of the first end of the hollow rod structure 11, and each support rod is composed of a plurality of rod segments. Each support rod is composed of a plurality of rod segments, some of which are used for transmission and some of which are used for support. Such a structural arrangement is more flexible when used.

[0042] like Figures 1 to 3 As shown, in the technical solution of this embodiment, when each support rod is composed of a plurality of rod segments, the support rod includes a first rod segment and a second rod segment, the first end of the first rod segment is rotatably connected to the outer wall of the first end of the hollow rod structure 11, the second end of the first rod segment is rotatably connected to the first end of the second rod segment, and the second end of the second rod segment is rotatably connected to the second end of the moving rod 21. The first rod segment supports the inner liner 30, and the second rod segment transmits the force and supports the first rod segment. It should be noted that when the operating part is fixed in the fixing hole, the first rod segment is in a supporting state, and the first rod segment extends radially along the hollow rod structure 11. When the inner liner 30 is designed, the end is not completely in the arc shape of the head. The end of the inner liner 30 is a plane, and the arc portion of the head is connected between the end plane of the inner liner 30 and the main body of the inner liner 30. Such a structure makes the support plane of the support structure 22 for the inner liner 30 larger, and the support effect is better.

[0043] As another embodiment, each support rod is a whole elastic rod. When the support structure 22 is in a supporting state, the elastic rod is an arc-shaped structure that matches the end head of the inner liner 30. Such a structure is more suitable for the structure when the end head of the inner liner 30 is an arc-shaped structure.

[0044] like Figure 1 As shown, in the technical solution of this embodiment, the liner support tool also includes a third sealing structure 60, the hollow rod structure 11 also includes an operating rod segment 113 and a force rod segment 114, the force rod segment 114 forms the second end of the hollow rod structure 11, and the third sealing structure 60 is arranged in the operating rod segment 113 and is located between the first end of the moving rod 21 and the force rod segment 114. The force rod segment 114 is a solid structure, and the moving rod 21 is a hollow structure. When the liner 30 is inflated, the force rod segment 114 is removed, and gas is injected into the liner through the hollow structure of the moving rod 21. Then, the moving rod 21, the force rod segment 114 and the operating rod segment 113 are sealed by the third sealing structure 60. As another embodiment, the moving rod 21 can also be a solid structure, and the liner 30 is injected with gas through other channels.

[0045] The fixed sleeve (hollow rod structure 11) is a cylindrical structure with a through hole (long hole) in the middle, and the through hole is matched with the movable shaft (moving rod 21). The length of the long hole is designed to correspond to the supporting state and the folding state of the supporting structure 22, that is, the end of the long hole close to the first end of the hollow rod structure corresponds to the folding state, and the end of the long hole close to the second end of the hollow rod structure 11 corresponds to the supporting state.

[0046] Fixed support end (force-applying rod section 114): One end of the fixed sleeve is designed as a hexagonal structure, which is clamped in the winding machine during use to play a role of fixed support.

[0047] Movable shaft limit groove (fixed hole): The shaft sleeve is designed with a limit groove, which cooperates with the pull rod (convex column) of the movable shaft to limit the movement trajectory of the movable shaft.

[0048] The valve seat 40 is composed of a disc-shaped or other shaped limit baffle, a thread connected to the valve seat, a transition section, and a sealing groove, in which an O-ring is placed. The above structure plays the role of connecting the bottle valve seat and sealing the inner liner to prevent air leakage.

[0049] Support structure 22: A structure (pin structure) for connecting support rods is designed at the other end of the fixed sleeve. To ensure uniform force inside the inner tank, more than three support rods should be designed and evenly arranged in the circumferential direction of the fixed sleeve. The number of support rod connection structures (pin structures) should be consistent with the number of support rods.

[0050] The moving shaft (moving rod 21) is a cylindrical structure with a through hole in the middle and a pull rod with a vertical axis on the side wall. The through hole is used to inflate the inside of the gas cylinder from the winding machine nozzle.

[0051] Sleeve limit: A sleeve limit is provided on the side where the moving shaft extends into the inner tank to limit the axial movement of the sleeve.

[0052] The sleeve is a thin metal cylinder with a certain length.

[0053] Connecting rod connection: The connecting structures (pin structures) connecting the connecting rods are evenly arranged in the circumferential direction of the sleeve, and the number of connecting structures should be the same as the number of supporting rod connections.

[0054] The support rod is a long metal plate with different widths at both ends, pin holes at both ends, and semicircular treatment at both ends. The movable shaft drives the sleeve, the sleeve drives the connecting rod, the connecting rod drives the support rod, and the support rod moves to the specified position to press and support the inner side of the inner tank.

[0055] The connecting rod is a long metal plate with the same width at both ends, pin holes at both ends, and semicircular at both ends, which plays the role of pushing the support rod to move.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0058] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liner support tool, characterized in that: include: A rod seat assembly (10), the rod seat assembly (10) comprising a hollow rod structure (11) having an opening at a first end, the hollow rod structure (11) having a mating rod section (111) that is sealed and mated with a valve seat (40); A support rod assembly (20), the support rod assembly (20) comprising a moving rod (21) and a supporting structure (22), the first end of the moving rod (21) being inserted into the hollow rod structure (11), the second end of the moving rod (21) being located outside the hollow rod structure (11), the first end of the supporting structure (22) being fixed to the first end of the hollow rod structure (11), and the second end of the supporting structure (22) being located at the second end of the moving rod (21); The moving rod (21) can move along the axial direction of the hollow rod structure (11) so that the supporting structure (22) has an open supporting state or a retracted folding state.

2. The liner support tool according to claim 1, characterized in that: The hollow rod structure (11) further comprises a limiting boss (112), wherein the limiting boss (112) is located on one side of the matching rod section (111) close to the second end of the hollow rod structure (11).

3. The liner support tool according to claim 2, characterized in that: The hollow rod structure (11) further comprises an operating rod segment (113) and a force-applying rod segment (114); the force-applying rod segment (114) forms the second end of the hollow rod structure (11); the operating rod segment (113) is located between the force-applying rod segment (114) and the limiting boss (112); the operating rod segment (113) has a long hole, and the long hole extends along the axial direction of the hollow rod structure (11); the support rod assembly (20) further comprises an operating portion (23), and the operating portion (23) is inserted into the long hole and connected to the moving rod (21).

4. The liner support tool according to claim 3, characterized in that: The operating rod segment (113) also has a fixing hole, which is located at one end of the long hole close to the force application rod segment (114) and extends along the circumference of the hollow rod structure (11).

5. The liner support tool according to claim 3, characterized in that: The liner supporting tool also includes a first sealing structure (50), which is arranged between the hollow rod structure (11) and the moving rod (21), and the first sealing structure (50) is located between the long hole and the first end of the hollow rod structure (11).

6. The liner supporting tool according to claim 5, characterized in that: The first sealing structure (50) comprises a first sealing ring, the inner wall of the hollow rod structure (11) is provided with a first sealing groove, and the first sealing ring is partially located in the first sealing groove.

7. The liner support tool according to claim 1, characterized in that: The hollow rod structure (11) further comprises a sealing rod segment (115), wherein the sealing rod segment (115) is located between the matching rod segment (111) and the second end of the hollow rod structure (11), and the outer diameter of the sealing rod segment (115) is smaller than the outer diameter of the matching rod segment (111), and the liner supporting tool further comprises a second sealing structure, wherein the second sealing structure is located in the sealing rod segment (115).

8. The liner support tool according to claim 1, characterized in that: The liner supporting tool further comprises a third sealing structure (60), and the hollow rod structure (11) further comprises an operating rod segment (113) and a force-applying rod segment (114), wherein the force-applying rod segment (114) forms the second end of the hollow rod structure (11), and the third sealing structure (60) is arranged in the operating rod segment (113) and is located between the first end of the moving rod (21) and the force-applying rod segment (114).

9. The liner supporting tool according to any one of claims 1 to 8, characterized in that: The support structure (22) further comprises a plurality of support rods, which are arranged at intervals along the circumference of the first end of the hollow rod structure (11), and each of the support rods is a whole elastic rod, or each of the support rods is composed of a plurality of rod segments.

10. The liner supporting tool according to claim 9, characterized in that: When each of the support rods is composed of a plurality of rod segments, the support rod comprises a first rod segment and a second rod segment, wherein the first end of the first rod segment is rotatably connected to the outer wall of the first end of the hollow rod structure (11), the second end of the first rod segment is rotatably connected to the first end of the second rod segment, and the second end of the second rod segment is rotatably connected to the second end of the moving rod (21).

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