External fiber winding device for processing inner container of high-pressure gas hydrogen storage container

Abstract

The invention provides an external fiber winding device for processing an inner container of a high-pressure gas hydrogen storage container, and relates to the technical field of hydrogen storage container processing. The two scraping units are arranged to efficiently scrape redundant glue on fibers after glue dipping, so that the redundant glue is prevented from forming glue bumps between fiber layers, tight combination between the fiber layers is ensured, and the overall strength and compactness of a winding layer are remarkably improved. The scraping unit is provided with four scrapers capable of being automatically replaced, the problem that the glue scraping effect is reduced due to the fact that glue is accumulated on the surface after the scrapers are used for a long time is effectively solved, and the glue scraping accuracy and efficiency are always kept. And through the arrangement of the adjusting unit, the distance between the two scraping units can be flexibly adjusted according to actual requirements so as to meet the treatment requirements of fibers with different thicknesses, and the device can be widely applied to various fiber types.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage container processing, and more particularly to an external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container. Background Art

[0002] As a key device for hydrogen energy storage, the strength and sealing performance of the inner liner of a high-pressure gaseous hydrogen storage container are crucial, directly related to the safety and efficiency of hydrogen storage. In order to improve the performance of the inner liner, the external fiber winding process is widely used. By winding multiple layers of fibers on the surface of the inner liner, the strength and fatigue resistance of the inner liner can be significantly enhanced.

[0003] For the existing external fiber winding devices for processing the inner liner of high-pressure gaseous hydrogen storage containers, in the process flow, the fibers are usually first subjected to sizing treatment in a sizing tank, and then directly wound around the surface of the hydrogen storage container inner liner through a guiding device. However, in the actual sizing process, due to the viscosity and wettability of the glue, excessive glue often adheres to the surface of the fibers. If these excessive glues are not processed and directly wound, a series of problems will occur. For example, excessive glue will form glue nodules between the fiber layers, affecting the tight bonding between the fiber layers and reducing the overall strength and compactness of the winding layer; at the same time, the presence of glue nodules will also affect the smoothness and dimensional accuracy of the inner liner surface, and may even cause slippage and misalignment of the fibers during the winding process, seriously affecting the winding quality. In addition, excessive glue will increase the weight of the inner liner, reducing its payload, and during the curing process, excessive glue may generate bubbles and defects, further affecting the sealing and pressure resistance performance of the inner liner. Summary of the Invention

[0004] The purpose of the present invention is to provide an external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container, which can solve the problems that in the actual sizing process, due to the viscosity and wettability of the glue, excessive glue often adheres to the surface of the fibers, and if these excessive glues are not processed and directly wound, a series of problems will occur.

[0005] The present invention provides an external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container, including a base, a fiber winding roller, a tension control mechanism, a sizing tank, and a guiding mechanism. The fiber winding roller, the tension control mechanism, the sizing tank, and the guiding mechanism are sequentially arranged on the top of the base from left to right. The sizing tank is provided with a cleaning structure for scraping off the excessive glue on the sized fibers. The cleaning structure includes two scraping units for scraping off the excessive glue on the fibers and an adjusting unit for adjusting the distance between the two scraping units.

[0006] Preferably, the adjusting unit includes a bracket, a bidirectional screw, a first motor, a limiting rod and two sets of sliders. The bracket is fixedly arranged on the dipping tank, and the bracket is located between the dipping tank and the guiding mechanism. The two ends of the bidirectional screw are respectively rotationally connected to the top and bottom of the bracket. The first motor is fixedly arranged on the outer top of the bracket, and the driving end of the first motor is fixedly connected to one end of the bidirectional screw. The limiting rod is fixedly arranged between the inner top and bottom of the bracket. The two sets of sliders are respectively movably connected to the double-thread part of the bidirectional screw and the limiting rod. The two sets of sliders are arranged one above the other, and the two scraping units are respectively arranged between the two sets of sliders.

[0007] Preferably, the scraping unit includes a housing, a second motor, a rotating shaft, a rotating block and a scraping knife. The housing is fixedly arranged on one of the sliders. The second motor is fixedly arranged inside the housing. The rotating shaft is rotationally connected to one side of the housing. One end of the rotating shaft is fixedly connected to the driving end of the second motor, and the other end of the rotating shaft is rotationally connected to the other slider. The rotating block is fixedly sleeved on the rotating shaft, and scraping knives are arranged on the four upper, lower, left and right faces of the rotating block.

[0008] Preferably, a scraping unit for removing glue on the surface of the scraping knife is fixedly arranged on the front side of one of the sliders.

[0009] Preferably, the scraping unit includes a connecting seat, an electric telescopic rod and a scraping knife. The connecting seat is fixedly arranged on the front side of one of the sliders. The electric telescopic rod is fixedly arranged on the front side of the connecting seat. The scraping knife is fixedly arranged on the driving end of the electric telescopic rod.

[0010] Preferably, a detection unit for detecting whether the fiber is broken is further arranged on the bracket.

[0011] Preferably, the detection unit includes a support plate and a photoelectric sensor. The support plate is fixedly arranged on the front side of the bracket, and the photoelectric sensor is fixedly penetrated through the support plate.

[0012] Preferably, the rotating shaft and the slider are connected by a bearing. The inner ring of the bearing is in interference fit with the rotating shaft, and the outer ring of the bearing is fixedly connected to the slider.

[0013] Preferably, the number of each set of sliders is two. One of the sliders is threadedly connected to the threaded part of the bidirectional screw, and the other slider is slidably connected to the limiting rod.

[0014] The present invention provides an external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container through improvement. Compared with the prior art, the following improvements and advantages are achieved: The present invention is provided with two scraping units, which can efficiently scrape off the excess glue on the fibers after impregnation, thereby avoiding the formation of glue tumors between the fiber layers, ensuring the tight combination between the fiber layers, and significantly improving the overall strength and density of the winding layer. The scraping unit is provided with four automatically replaceable scrapers, effectively avoiding the problem of reduced scraping effect caused by the accumulation of glue on the surface of the scraper during long-term use, and always maintaining the accuracy and efficiency of scraping. Through the setting of the adjustment unit, the distance between the two scraping units can be flexibly adjusted according to actual needs to adapt to the processing requirements of fibers of different thicknesses, enabling the device to be widely applied to various fiber types. After the scraper is used for a period of time, it will automatically rotate to be in the same straight line as the scraping unit, facilitating the automatic cleaning of the scraper by the scraping unit, ensuring that the scraper is in the best state before each scraping, thereby ensuring the continuous stability of the scraping effect and further improving the quality and efficiency of fiber winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is an axonometric structural view of the present invention;

[0017] Figure 2 is an axonometric structural view of the cleaning structure of the present invention;

[0018] Figure 3 is an axonometric structural view of the scraping unit and the adjustment unit of the present invention;

[0019] Figure 4 is an axonometric structural view of the scraping unit and the scraping unit of the present invention;

[0020] Figure 5 is a side view structural view of the scraping unit and the adjustment unit of the present invention.

[0021] Description of the reference numerals:

[0022] 1. Base; 2. Fiber winding roller; 3. Tension control mechanism; 4. Impregnation tank; 5. Guiding mechanism; 6. Adjusting unit; 61. Bracket; 62. Bi-directional screw; 63. First motor; 64. Limit rod; 65. Slide block; 7. Scraping unit; 71. Housing; 72. Second motor; 73. Rotating shaft; 74. Rotating block; 75. Scraper; 8. Glue scraping unit; 81. Connecting seat; 82. Electric telescopic rod; 83. Glue scraping knife; 9. Detection unit; 91. Support plate; 92. Photoelectric sensor. Detailed implementation manners

[0023] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] Please refer to Figures 1-5, the present invention provides a technical solution: an external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container, including a base 1, a fiber winding roller 2, a tension control mechanism 3, an impregnation tank 4, and a guiding mechanism 5. The fiber winding roller 2, the tension control mechanism 3, the impregnation tank 4, and the guiding mechanism 5 are sequentially arranged on the top of the base 1 from left to right. The fiber winding roller 2, the tension control mechanism 3, the impregnation tank 4, and the guiding mechanism 5 are all existing devices composed of the fiber winding device. A cleaning structure for scraping off the excess glue on the fiber after impregnation is arranged on the impregnation tank 4. The cleaning structure includes two scraping units 7 for scraping off the excess glue on the fiber and an adjusting unit 6 for adjusting the distance between the two scraping units 7. The two scraping units 7 are arranged one above the other, and the adjusting unit 6 can adjust the distance between the two scraping units 7, so as to effectively remove the excess glue on fibers of different thicknesses.

[0027] Specifically, the adjusting unit 6 includes a bracket 61, a bidirectional screw 62, a first motor 63, a limiting rod 64, and two groups of sliders 65. The bracket 61 is fixedly arranged on the impregnation tank 4 and is located between the impregnation tank 4 and the guiding mechanism 5. The bracket 61 serves as the base of the entire adjusting unit 6 and is firmly installed on the impregnation tank 4, providing a solid foundation and support for the parts inside the adjusting unit 6, facilitating the fiber to directly enter the adjusting unit 6 for glue scraping treatment after impregnation, and realizing the continuity and high efficiency of the process. The bracket 61 is in a rectangular structure with a hole in the middle. The two ends of the bidirectional screw 62 are respectively rotationally connected to the top and bottom of the bracket 61. The first motor 63 is fixedly arranged on the outer top of the bracket 61, and the driving end of the first motor 63 is fixedly connected to one end of the bidirectional screw 62. The first motor 63 is used to drive the bidirectional screw 62 to rotate. The limiting rod 64 is fixedly arranged between the inner top and bottom of the bracket 61 and is located on the left side of the bidirectional screw 62. The function of the limiting rod 64 is to limit the moving range of the slider 65. The two groups of sliders 65 are respectively movably connected to the double-threaded part of the bidirectional screw 62 and the limiting rod 64. The two groups of sliders 65 are arranged one above the other, and the two scraping units 7 are respectively arranged between the two groups of sliders 65. The movement of the sliders 65 drives the movement of the scraping units 7, realizing the precise adjustment of the distance between the scraping units 7, so as to meet the processing requirements of fibers of different thicknesses.

[0028] When adjusting the distance between the two scraping units 7, the driving end of the first motor 63 drives the bidirectional screw 62 to rotate. Due to the limiting effect between the limiting rods 64, the two groups of sliders 65 can only drive the two scraping units 7 to move linearly towards or away from each other, so as to adjust the distance between the two scraping units 7.

[0029] Specifically, the scraping unit 7 includes a housing 71, a second motor 72, a rotating shaft 73, a rotating block 74, and a scraping blade 75. The housing 71 is fixedly arranged on one of the sliders 65. The housing 71 provides an installation space for the second motor 72. The second motor 72 is fixedly arranged inside the housing 71. The rotating shaft 73 is rotatably connected to one side of the housing 71. One end of the rotating shaft 73 is fixedly connected to the driving end of the second motor 72, and the other end of the rotating shaft 73 is rotatably connected to the other slider 65. The driving end of the second motor 72 can drive the rotating shaft 73 to rotate stably on the slider 65 and the housing 71. The rotating block 74 is fixedly sleeved on the rotating shaft 73. Scraping blades 75 are arranged on the four upper, lower, left, and right faces of the rotating block 74. The second motor 72 rotates 90 degrees each time. By precisely controlling the rotation angle of the motor, the rotating block 74 rotates 90 degrees each time, ensuring that each scraping blade 75 can take turns to perform the glue scraping work. The four scraping blades 75 can be used in turn driven by the second motor 72. This design of using in turn not only extends the service life of the scraping blades 75, but also ensures the continuous stability of the glue scraping effect, ensuring that the cleaning effect of the glue on the fiber surface is always the same.

[0030] The scraping blade 75 located at the uppermost position inside the scraping unit 7 can scrape off the excess glue on the fiber. After the uppermost scraping blade 75 is used for a period of time, the driving end of the second motor 72 will drive the rotating shaft 73 and the rotating block to rotate 90 degrees, so that another scraping blade 75 rotates to the position of the previous scraping blade 75, and then they are used in turn.

[0031] Specifically, a glue scraping unit 8 for cleaning the glue on the surface of the scraping blade 75 is fixedly arranged on the front side of one of the sliders 65. The glue scraping unit 8 can clean the surface of the used scraping blade 75, ensuring that the scraping blade 75 is in the best state before each glue scraping, thereby ensuring the continuous stability of the glue scraping effect.

[0032] Specifically, the glue scraping unit 8 includes a connecting seat 81, an electric telescopic rod 82, and a glue scraping knife 83. The connecting seat 81 is fixedly arranged on the front side of one of the sliders 65. The electric telescopic rod 82 is fixedly arranged on the front side of the connecting seat 81. The electric telescopic rod 82 is connected to the slider 65 through the connecting seat 81. The glue scraping knife 83 is fixedly arranged on the driving end of the electric telescopic rod 82. When the electric telescopic rod 82 drives the glue scraping knife 83 to move, the glue scraping knife 83 will contact the surface of the used scraping blade 75.

[0033] Specifically, a detection unit 9 for detecting whether the fiber is broken is further arranged on the bracket 61.

[0034] Specifically, the detection unit 9 includes a support plate 91 and a photoelectric sensor 92. The support plate 91 is fixedly arranged on the front side of the bracket 61, and the photoelectric sensor 92 is fixedly penetrated through the support plate 91. The photoelectric sensor 92 is located at the central part of the support plate 91 and can conduct a comprehensive non-contact detection on the fiber to avoid blind spots.

[0035] Specifically, the rotating shaft 73 and the slider 65 are connected by a bearing. The inner ring of the bearing is in interference fit with the rotating shaft 73, and the outer ring of the bearing is fixedly connected to the slider 65. The connection mode of the bearing ensures the stable rotation of the rotating shaft 73 on the slider 65.

[0036] Specifically, the number of each group of sliders 65 is two. One of the sliders 65 is threadedly connected to the threaded part of the bidirectional screw 62, and the other slider 65 is slidably connected to the limit rod 64.

[0037] Working principle: First, the fiber starts from the fiber winding roller 2, maintains a constant tension under the action of the tension control mechanism 3, enters the dipping tank 4 for dipping treatment, so that a layer of glue is evenly attached to the surface of the fiber. The dipped fiber then enters the guiding mechanism 5. During this process, the fiber will pass through a cleaning structure arranged on the dipping tank 4. The core of this cleaning structure is two scraping units 7 arranged one above the other. Its function is to scrape off the excess glue on the fiber to prevent the formation of glue nodules, which may affect the tight combination between fiber layers and the overall strength and density of the winding layer. To adapt to the processing requirements of fibers with different thicknesses, the distance between the two scraping units 7 can be precisely adjusted by the adjusting unit 6. The adjusting unit 6 is fixed on the dipping tank 4 through the bracket 61. The two groups of sliders 65 inside it are respectively movably connected to the bidirectional screw 62 and the limit rod 64. The first motor 63 drives the bidirectional screw 62 to rotate, driving the slider 65 to move, thereby changing the distance between the two scraping units 7. Each scraping unit 7 internally contains a second motor 72, a rotating shaft 73, a rotating block 74, and four scraping knives 75. The second motor 72 drives the rotating shaft 73 to rotate, driving the rotating block 74 to rotate, so that the four scraping knives 75 can take turns to scrape the glue on the fiber. After the scraping knife 75 is used for a period of time, it will automatically rotate to be in the same straight line as the glue scraping unit 8. The glue scraping unit 8 drives the glue scraping knife 83 to move through the electric telescopic rod 82, and the glue scraping knife 83 will contact the surface of the scraping knife 75 to clean the scraping knife 75 to ensure its best state during the next glue scraping. In addition, a detection unit 9 is also arranged on the bracket 61. This detection unit 9 includes a photoelectric sensor 92, which can conduct a comprehensive non-contact detection on the fiber, and real-time monitor whether the fiber is broken to ensure the smooth progress of the winding process.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container, comprising a base (1), a fiber winding roller (2), a tension control mechanism (3), an impregnation tank (4), and a guiding mechanism (5). The fiber winding roller (2), the tension control mechanism (3), the impregnation tank (4), and the guiding mechanism (5) are sequentially arranged on the top of the base (1) from left to right, characterized in that, A cleaning structure for scraping off the excess glue on the fiber after dipping is provided on the dipping tank (4). The cleaning structure includes two scraping units (7) for scraping off the excess glue on the fiber and an adjusting unit (6) for adjusting the distance between the two scraping units (7).

2. The external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container according to claim 1, wherein The adjusting unit (6) includes a bracket (61), a bidirectional screw (62), a first motor (63), a limiting rod (64) and two groups of sliders (65). The bracket (61) is fixedly arranged on the dipping tank (4), and the bracket (61) is located between the dipping tank (4) and the guiding mechanism (5). The two ends of the bidirectional screw (62) are respectively rotatably connected to the top and bottom of the bracket (61). The first motor (63) is fixedly arranged on the outer top of the bracket (61), and the driving end of the first motor (63) is fixedly connected to one end of the bidirectional screw (62). The limiting rod (64) is fixedly arranged between the inner top and bottom of the bracket (61). The two groups of sliders (65) are respectively movably connected to the double-threaded part of the bidirectional screw (62) and the limiting rod (64). The two groups of sliders (65) are arranged one above the other, and the two scraping units (7) are respectively arranged between the two groups of sliders (65).

3. An external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container according to claim 2, characterized in that, The scraping unit (7) includes a housing (71), a second motor (72), a rotating shaft (73), a rotating block (74) and a scraping knife (75). The housing (71) is fixedly arranged on one of the sliders (65). The second motor (72) is fixedly arranged inside the housing (71). The rotating shaft (73) is rotatably connected to one side of the housing (71). One end of the rotating shaft (73) is fixedly connected to the driving end of the second motor (72), and the other end of the rotating shaft (73) is rotatably connected to the other slider (65). The rotating block (74) is fixedly sleeved on the rotating shaft (73). Scraping knives (75) are arranged on the upper, lower, left and right four surfaces of the rotating block (74).

4. An external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container according to claim 3, characterized in that, A glue scraping unit (8) for cleaning the glue on the surface of the scraping knife (75) is fixedly arranged on the front side of one of the sliders (65).

5. An external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container according to claim 4, characterized in that, The glue scraping unit (8) includes a connecting seat (81), an electric telescopic rod (82) and a glue scraping knife (83). The connecting seat (81) is fixedly arranged on the front side of one of the sliders (65). The electric telescopic rod (82) is fixedly arranged on the front side of the connecting seat (81). The glue scraping knife (83) is fixedly arranged on the driving end of the electric telescopic rod (82).

6. An external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container according to claim 5, characterized in that, A detection unit (9) for detecting whether the fiber is broken is also arranged on the bracket (61).

7. An external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container according to claim 6, characterized in that, The detection unit (9) includes a support plate (91) and a photoelectric sensor (92). The support plate (91) is fixedly arranged on the front side of the bracket (61). The photoelectric sensor (92) is fixedly penetrated through the support plate (91).

8. An external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container according to claim 7, characterized in that, The rotating shaft (73) is connected to the slider (65) through a bearing. The inner ring of the bearing is in interference fit with the rotating shaft (73), and the outer ring of the bearing is fixedly connected to the slider (65).

9. An external fiber winding device for processing the inner liner of a high-pressure gaseous hydrogen storage container according to claim 8, characterized in that, The number of each group of the sliders (65) is two, one of the sliders (65) is threadedly connected to the threaded portion of the bidirectional screw (62), and the other slider (65) is slidably connected to the limiting rod (64).

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