Inflator for hydrogen storage vessels

Abstract

The application relates to the technical field of inflating devices, and provides an inflating device for a hydrogen storage container, which is used for inflating hydrogen into a container tank body and comprises an angle valve, a mounting ring, an inflating pipe, a mounting cover, a positioning mechanism, a first sealing mechanism and a second sealing mechanism. The angle valve is mounted on the top side wall of the container tank body, one end of the angle valve is communicated with the container tank body, the other end of the angle valve is fixedly provided with a mounting pipe, the mounting ring is fixedly arranged on the outer wall of the mounting pipe, the inflating pipe is arranged on one side of the mounting pipe, one end of the inflating pipe, which is away from the angle valve, is communicated with an external gas source, the mounting cover is fixedly arranged at one end of the inflating pipe, which is close to the angle valve, and a mounting opening, which is communicated with the inflating pipe, is arranged in the inner wall of the mounting cover. Through the technical scheme, the technical problem that gas leakage is prone to occur due to the influence of high pressure in the process of inflating the hydrogen storage container by the inflating pipe through the quick connector in the prior art is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of inflation device technology, and more specifically, to an inflation device for a hydrogen storage container. Background Technology

[0002] Hydrogen, as a clean and efficient secondary energy source, is increasingly widely used in new energy vehicles, fuel cell power generation, and chemical production. As the core equipment in the hydrogen storage and transportation process, the safety and reliability of the hydrogen filling process directly determine the operational efficiency of the hydrogen utilization system, and the filling seal is a key indicator to ensure the safety and reliability of this process.

[0003] In existing technologies, hydrogen storage container filling typically involves equipping the hydrogen storage container with a quick-connect male connector at the filling port and a corresponding quick-connect female connector at the filling pipeline end. Inserting the male connector into the female connector allows for automatic locking via a mechanical structure, thus establishing gas connection. For example, in some automatic hydrogen refueling devices, the hydrogen storage cylinder is pushed into the cylinder compartment, and the quick-connect male connector aligns and locks with the quick-connect female connector on the filling connector to complete the connection. After filling, a locking release device can push a sliding sleeve, causing the female connector to pop out of the male connector, achieving rapid disconnection and connecting the gas source to the hydrogen storage container. Then, hydrogen is transferred from the gas source to the storage container via pressure difference, working in conjunction with a compressor and pressure regulating module to achieve basic filling functionality.

[0004] However, as a commonly used connecting component, quick-connect couplings require high precision in terms of sealing. Misalignment of male and female couplings can easily lead to uneven contact of the sealing surfaces. Moreover, hydrogen filling is generally high-pressure filling, which makes the sealing components prone to wear and tear. High-frequency insertion and removal or high-pressure and low-temperature conditions can easily cause aging, deformation or wear, and the locking mechanism is prone to fatigue failure. After long-term use, the pre-tightening force of components such as claws and springs decreases, making it impossible to maintain a stable sealing effect. Especially in high-pressure filling scenarios such as 70MPa, the risk of sealing failure is even higher, which can easily lead to hydrogen leakage hazards. Summary of the Invention

[0005] To overcome the above-mentioned defects, the present invention provides a gas filling device for hydrogen storage containers, which solves the technical problem that gas leakage is easily caused by high pressure during the process of filling hydrogen storage containers with gas filling pipes using quick-connect couplings in the prior art.

[0006] According to one aspect, at least one embodiment of the present invention provides a hydrogen filling device for a hydrogen storage container, used for filling the container tank with hydrogen, including an angle valve, a mounting ring, a filling pipe, a mounting cover, a positioning mechanism, a first sealing mechanism, and a second sealing mechanism. The angle valve is installed on the top side wall of the container tank, one end of the angle valve is connected to the container tank, and the other end of the angle valve is fixedly provided with a mounting pipe. The mounting ring is fixedly provided on the outer wall of the mounting pipe. The filling pipe is provided on one side of the mounting pipe, and the end of the filling pipe away from the angle valve is connected to an external gas source. The mounting cover is fixedly provided on the filling pipe. The air tube is located near one end of the angle valve. The inner wall of the mounting cover has an installation port that communicates with the inflation tube. The inner wall of the mounting cover is adapted to the shape of the outer wall of the mounting ring. The positioning mechanism is disposed on the mounting cover and is used to position the mounting ring and the mounting cover after the mounting ring is inserted into the mounting cover. The first sealing mechanism is disposed inside the mounting tube and is used to seal the mounting tube. The second sealing mechanism is disposed on the mounting cover and is used to seal the installation port. At the same time, the inflation tube and the mounting tube can be connected after the positioning of the mounting ring and the mounting cover is completed.

[0007] Preferably, the first sealing mechanism includes a first sealing ring, a first sealing tube, a first support spring, and a first sealing ring. The first sealing ring is fixedly disposed on the inner wall of the mounting tube near the mounting cover at one end. The first sealing tube is slidably and sealingly disposed within the first sealing ring. Both ends of the outer wall of the first sealing tube are fixedly disposed with first positioning rings. The end of the first sealing tube near the angle valve has a plurality of first sealing ports in an annular shape. The first support spring is fitted on the outer wall of the first sealing tube. Both ends of the first support spring abut against the first sealing ring and the first positioning ring on the side away from the angle valve, respectively. The side wall of the first positioning ring near the angle valve is fixedly disposed with the first sealing ring.

[0008] Furthermore, it also includes an abutment ring, which is fixedly disposed on the inner wall of the mounting tube on one side of the first sealing ring.

[0009] Furthermore, the second sealing mechanism includes a second sealing ring, a second sealing tube, a second support spring, and a sealing assembly. The second sealing ring is fixedly disposed on the inner wall of the mounting port. The second sealing tube is slidably disposed and sealed within the second sealing ring. A first sealing disc is fixedly disposed at one end of the outer wall of the second sealing tube near the angle valve, and a second sealing disc is fixedly disposed at one end of the outer wall of the second sealing tube away from the angle valve. A second sealing ring is fixedly disposed on the side wall of the second sealing disc near the angle valve. The end of the second sealing tube away from the angle valve has a plurality of second sealing ports in an annular shape. The second support spring is fitted onto the second sealing tube, and the two ends of the second support spring abut against the first sealing disc and the second sealing ring, respectively. The sealing assembly is disposed on the first sealing disc and is used to seal between the first sealing disc and the adjacent first positioning ring.

[0010] Furthermore, the sealing assembly includes a sealing groove and a third sealing ring. The sealing groove is formed on the first sealing disc and communicates with the inflation pipe. The sealing groove is adapted to the shape of the first positioning ring. The third sealing ring is fixedly disposed on the side wall of the first positioning ring away from the angle valve.

[0011] Based on the above scheme, the positioning mechanism includes a first cavity, an adjusting housing, positioning columns, a synchronous rotation mechanism, and a moving mechanism. The mounting cover has an annular first cavity. Multiple positioning grooves are formed on the sidewall of the first cavity. A positioning port is formed at the end of the sidewall of each positioning groove near the angle valve. A limiting groove is formed on the sidewall of the positioning port, which penetrates the inner wall of the mounting cover. An annular adjusting housing is slidably disposed within the first cavity. Multiple positioning columns are rotatably disposed on the sidewall of the adjusting housing, extending into the positioning grooves. A positioning block is fixedly disposed at the end of the outer wall of each positioning column near the angle valve. The positioning block is shaped to match the limiting groove. The synchronous rotation mechanism is disposed on the adjusting housing to drive the multiple positioning columns to rotate synchronously. The moving mechanism is disposed on the adjusting housing to drive the adjusting housing to move within the first cavity.

[0012] Based on the above scheme, the synchronous rotation mechanism includes a first gear, a first gear ring, a second gear, and a drive mechanism. The first gear is rotatably disposed inside the adjustment housing on one side of the positioning column. The positioning column passes through the side wall of the adjustment housing and is fixedly connected to the first gear. The first gear ring is rotatably disposed inside the adjustment housing and meshes with the first gear. The second gear is rotatably disposed inside the adjustment housing and meshes with the first gear ring. The drive mechanism is disposed on the adjustment housing and is used to drive the second gear to rotate.

[0013] Based on the above scheme, the driving mechanism includes a first driving port, a second driving port, a driving prism, and a first handwheel. The first driving port is opened on the adjusting housing, the second driving port is opened on the second gear, the second driving port is aligned with the first driving port, the driving prism is rotatably disposed in the first cavity, the driving prism passes through the first driving port and the second driving port, the driving prism and the side wall of the second driving port are connected by a clearance fit, and the first handwheel is rotatably disposed on the mounting cover and is fixedly connected to the driving prism.

[0014] Based on the above scheme, the moving mechanism includes a threaded rod and a second handwheel. The threaded rod is rotatably disposed in the first cavity and passes through the adjusting housing through a threaded engagement. The second handwheel is rotatably disposed on the mounting cover and is fixedly connected to the threaded rod.

[0015] Based on the above scheme, a shut-off valve and a pressure gauge are installed on the inflation pipe.

[0016] The beneficial effects of the embodiments of the present invention are as follows:

[0017] 1. In this invention, by setting the first sealing mechanism, the first positioning ring near the angle valve can be pushed and pressed against the side wall of the first sealing ring under the elastic force of the first support spring, thereby achieving the sealing of the first positioning ring and the first sealing ring through the first sealing ring, thus ensuring the sealing performance of the installation tube;

[0018] 2. In this invention, by setting the second sealing mechanism, the second sealing ring on the second sealing disc can be pushed to press against the side wall of the second sealing ring under the elastic force of the second support spring, thereby achieving the sealing between the second sealing disc and the second sealing ring through the second sealing ring, thus ensuring the sealing performance of the air inflator.

[0019] 3. In this invention, by setting up a positioning mechanism, after the mounting ring is inserted into the mounting cover, the operation of the moving mechanism and the synchronous rotation mechanism can drive the positioning block to extend into the mounting cover and push the mounting ring to extend into the interior of the mounting cover, thereby fixing the mounting ring and the mounting cover together with the inner wall of the mounting cover. At the same time, during the movement of the mounting ring, the first positioning ring can be driven to extend into the sealing groove. Simultaneously, the mutual compression between the first positioning ring and the bottom of the sealing groove drives the first sealing tube and the second sealing tube to move relative to each other. At this time, the first positioning ring can abut against the abutting ring, thereby ensuring that the first sealing port and the second sealing port are connected to the mounting tube and the inflation tube respectively. Thus, the connection between the inflation tube and the mounting tube can be achieved through the first sealing port, the first sealing tube, the second sealing port, and the second sealing tube, thereby facilitating the inflation of the container.

[0020] 4. In this invention, by setting the third sealing ring, the first positioning ring and the sealing groove can be sealed by the third sealing ring, thereby ensuring the sealing performance between the inflation tube and the installation tube and avoiding the problem of air leakage. At the same time, after the separation between the installation cover and the installation ring is completed, the inflation tube and the installation tube can be resealed by the first support spring and the second support spring. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an air filling device for a hydrogen storage container in one embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the mounting cover and mounting ring in an embodiment of the present invention.

[0024] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the mounting pipe in one embodiment of the present invention;

[0026] Figure 5 This is a cross-sectional view of the mounting pipe in one embodiment of the present invention;

[0027] Figure 6This is a schematic diagram of the structure of the inflation tube in one embodiment of the present invention;

[0028] Figure 7 This is a cross-sectional view of the mounting cover in one embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the second sealing mechanism in one embodiment of the present invention;

[0030] Figure 9 This is a cross-sectional view of the positioning mechanism in one embodiment of the present invention;

[0031] Figure 10 This is a cross-sectional view of the synchronous rotation mechanism in one embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the shut-off valve structure in this invention;

[0033] Figure 12 This is a cross-sectional structural schematic diagram of the shut-off valve in this invention.

[0034] In the diagram: 1. Container body; 2. Angle valve; 3. Mounting pipe; 4. Mounting ring; 5. Inflation pipe; 6. Mounting cover; 7. First sealing ring; 8. First sealing pipe; 9. First positioning ring; 10. First sealing port; 11. First support spring; 12. First sealing ring; 13. Abutment ring; 14. Second sealing ring; 15. Second sealing pipe; 16. Second sealing disc; 17. First sealing disc; 18. Second sealing ring; 19. Second sealing port; 20. Second support 21. Support spring; 22. Sealing groove; 23. Third sealing ring; 24. First cavity; 25. Positioning groove; 26. Positioning port; 27. Limiting through groove; 28. Adjusting housing; 29. ​​Positioning pin; 30. Positioning block; 31. First gear; 32. Second gear; 33. First drive port; 34. Second drive port; 35. Drive prism; 36. First handwheel; 37. Threaded rod; 38. Second handwheel; 39. Shut-off valve; 40. Pressure gauge. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0036] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0037] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0040] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] like Figures 1-12The diagram illustrates a hydrogen storage container filling device according to an embodiment of the present invention, used for filling the container tank 1 with hydrogen. It includes an angle valve 2, a mounting ring 4, a filling pipe 5, a mounting cover 6, a positioning mechanism, a first sealing mechanism, and a second sealing mechanism. The angle valve 2 is installed on the top side wall of the container tank 1, with one end connected to the container tank 1. The other end of the angle valve 2 is fixedly connected to the mounting pipe 3. The mounting ring 4 is fixedly installed on the outer wall of the mounting pipe 3. The filling pipe 5 is located on one side of the mounting pipe 3, with the end of the filling pipe 5 away from the angle valve 2 connected to an external gas source. The mounting cover 6 is fixedly installed near the filling pipe 5. One end of the angle valve 2 has an installation port on the inner wall of the mounting cover 6 that communicates with the inflation pipe 5. The inner wall of the mounting cover 6 is adapted to the shape of the outer wall of the mounting ring 4. A positioning mechanism is set on the mounting cover 6 to position the mounting ring 4 and the mounting cover 6 after the mounting ring 4 is inserted into the mounting cover 6. A first sealing mechanism is set inside the mounting pipe 3 to seal the mounting pipe 3. A second sealing mechanism is set on the mounting cover 6 to seal the installation port. At the same time, after the positioning between the mounting ring 4 and the mounting cover 6 is completed, the inflation pipe 5 can be connected to the mounting pipe 3. A shut-off valve 39 and a pressure gauge 40 are installed on the inflation pipe 5.

[0042] Reference Figures 1-5 The first sealing mechanism includes a first sealing ring 7, a first sealing tube 8, a first support spring 11, and a first sealing ring 12. The first sealing ring 7 is fixedly disposed on the inner wall of the mounting tube 3 near the mounting cover 6. The first sealing tube 8 is slidably and sealingly disposed within the first sealing ring 7. Both ends of the outer wall of the first sealing tube 8 are fixedly disposed with first positioning rings 9. The end of the first sealing tube 8 near the angle valve 2 has multiple first sealing ports 10 in an annular shape. The first support spring 11 is fitted onto the outer wall of the first sealing tube 8, and both ends of the first support spring 11 are respectively connected to the first sealing ring 12. The sealing ring 7 and the first positioning ring 9 on the side away from the angle valve 2 abut against each other. The side wall of the first positioning ring 9 near the angle valve 2 is fixedly provided with a first sealing ring 12 and also includes an abutment ring 13. The inner wall of the mounting tube 3 is fixedly provided with an abutment ring 13 on one side of the first sealing ring 7. Specifically, under the elastic force of the first support spring 11, the first positioning ring 9 near the angle valve 2 can be pushed to press against the side wall of the first sealing ring 7, thereby achieving the sealing of the first positioning ring 9 and the first sealing ring 7 through the first sealing ring 12, thus ensuring the sealing performance of the mounting tube 3.

[0043] Reference Figures 6-8The second sealing mechanism includes a second sealing ring 14, a second sealing tube 15, a second support spring 20, and a sealing assembly. The second sealing ring 14 is fixedly mounted on the inner wall of the mounting port. The second sealing tube 15 slides and seals within the second sealing ring 14. A first sealing disc 17 is fixedly mounted on the outer wall of the second sealing tube 15 near the angle valve 2, and a second sealing disc 16 is fixedly mounted on the outer wall of the second sealing tube 15 away from the angle valve 2. A second sealing ring 18 is fixedly mounted on the side wall of the second sealing disc 16 near the angle valve 2. The end of the second sealing tube 15 away from the angle valve 2 has multiple second sealing ports arranged in a ring shape. 19. The second support spring 20 is fitted onto the second sealing tube 15. The two ends of the second support spring 20 abut against the first sealing disc 17 and the second sealing ring 14, respectively. The sealing assembly is set on the first sealing disc 17 and is used to seal between the first sealing disc 17 and the adjacent first positioning ring 9. Specifically, under the elastic force of the second support spring 20, the second sealing ring 18 on the second sealing disc 16 can be pushed to press against the side wall of the second sealing ring 14. Thus, the second sealing ring 18 can be used to seal between the second sealing disc 16 and the second sealing ring 14, thereby ensuring the sealing performance of the inflation tube 5.

[0044] Reference Figures 4-8 The sealing assembly includes a sealing groove 21 and a third sealing ring 22. The sealing groove 21 is formed on the first sealing disc 17 and communicates with the inflation pipe 5. The sealing groove 21 is adapted to the shape of the first positioning ring 9. The third sealing ring 22 is fixedly provided on the side wall of the first positioning ring 9 away from the angle valve 2. Specifically, after the mounting ring 4 is inserted into the mounting cover 6, the positioning mechanism can drive the positioning block 29 to extend into the mounting cover 6 and push the mounting ring 4 into the interior of the mounting cover 6, thus fixing the mounting ring 4 to the mounting cover 6 in conjunction with the inner wall of the mounting cover 6. At the same time, during the movement of the mounting ring 4, the first positioning ring 9 can be driven into the sealing groove 21. Simultaneously, the mutual compression between the first positioning ring 9 and the bottom of the sealing groove 21 drives the first sealing tube 8 and the second sealing tube 15 into the groove. When the relative movement is completed, the first positioning ring 9 can abut against the abutment ring 13, thereby ensuring that the first sealing port 10 and the second sealing port 19 are connected to the installation pipe 3 and the inflation pipe 5 respectively. Thus, the inflation pipe 5 and the installation pipe 3 can be connected through the first sealing port 10, the first sealing pipe 8, the second sealing port 19 and the second sealing pipe 15, which facilitates the inflation of the container tank 1. At the same time, the first positioning ring 9 and the sealing groove 21 can be sealed by the third sealing ring 22, thereby ensuring the sealing performance between the inflation pipe 5 and the installation pipe 3 and avoiding the problem of air leakage. After the installation cover 6 and the installation ring 4 are separated, the inflation pipe 5 and the installation pipe 3 can be resealed by the first support spring 11 and the second support spring 20.

[0045] Reference Figures 7-10 The positioning mechanism includes a first cavity 23, an adjusting housing 27, positioning pins 28, a synchronous rotation mechanism, and a moving mechanism. The mounting cover 6 has an annular first cavity 23. Multiple positioning grooves 24 are formed on the sidewall of the first cavity 23. A positioning port 25 is formed at the end of the sidewall of the positioning groove 24 near the angle valve 2. A limit groove 26 is formed on the sidewall of the positioning port 25, which penetrates the inner wall of the mounting cover 6. An annular adjusting housing 27 is slidably disposed within the first cavity 23. Multiple positioning pins 28 are rotatably disposed on the sidewall of the adjusting housing 27, extending into the positioning grooves 24. A positioning block 29 is fixedly disposed at the end of the outer wall of the positioning pin 28 near the angle valve 2. The positioning block 29 is shaped to match the limiting slot 26. A synchronous rotation mechanism is mounted on the adjusting housing 27 to drive multiple positioning pins 28 to rotate synchronously. A moving mechanism is mounted on the adjusting housing 27 to drive the adjusting housing 27 to move within the first cavity 23. The synchronous rotation mechanism includes a first gear 30, a first gear ring 31, a second gear 32, and a driving mechanism. The first gear 30 is rotatably mounted on one side of the positioning pins 28 within the adjusting housing 27. The positioning pins 28 penetrate the side wall of the adjusting housing 27 and are fixedly connected to the first gear 30. The first gear ring 31 is rotatably mounted within the adjusting housing 27 and meshes with the first gear 30. The second gear 32 is rotatably disposed within the adjusting housing 27 and meshes with the first gear ring 31. A drive mechanism is disposed on the adjusting housing 27 to drive the second gear 32 to rotate. The drive mechanism includes a first drive port 33, a second drive port 34, a drive prism 35, and a first handwheel 36. The first drive port 33 is located on the adjusting housing 27, and the second drive port 34 is located on the second gear 32, aligned with the first drive port 33. The drive prism 35 is rotatably disposed within the first cavity 23, passing through both the first drive port 33 and the second drive port 34. The sidewalls of the drive prism 35 and the second drive port 34 are fitted with a clearance. The first handwheel 36 is rotatably mounted on the mounting cover 6 and is fixedly connected to the drive prism 35. Specifically, after the operator inserts the mounting ring 4 into the mounting cover 6, the operator rotates the first handwheel 36. The rotation of the first handwheel 36 drives the drive prism 35 to rotate. At the same time, the clearance between the drive prism 35 and the second drive port 34 drives the second gear 32 to rotate. Then, the meshing of the second gear 32 with the first gear ring 31 and the meshing of the first gear ring 31 with the first gear 30 drives the first gear 30 and the positioning pin 28 to rotate. The rotation of the positioning pin 28 can drive the positioning block 29 to extend into the mounting cover 6.

[0046] Reference Figures 7-10The moving mechanism includes a threaded rod 37 and a second handwheel 38. The threaded rod 37 is rotatably disposed in the first cavity 23 and passes through the adjusting housing 27 through a threaded engagement. The second handwheel 38 is rotatably disposed on the mounting cover 6 and is fixedly connected to the threaded rod 37. Specifically, when the operator rotates the second handwheel 38, the second handwheel 38 can drive the threaded rod 37 to rotate. At the same time, through the threaded engagement between the threaded rod 37 and the adjusting housing 27, the adjusting housing 27, the positioning column 28, and the positioning block 29 are moved. Then, through the positioning block 29, the mounting ring 4 is pushed into the inner wall of the mounting cover 6 and positioned in conjunction with the inner wall of the mounting cover 6. This completes the installation and fixation between the mounting ring 4 and the mounting cover 6.

[0047] Another point that needs to be made is... Figure 11 as well as Figure 12 This is an actual product image of the gate valve 39, used to clearly demonstrate the gate valve 39. The gate valve 39 can control the flow and shut-off of filling gas through a 0.8MPa control gas. Its advantage is that it can control the flow of filling gas or liquid more quickly and stably. With the high-pressure quick-connect coupling, it can quickly fill gas cylinders, parts, storage tanks and other equipment. During the filling process, the gas and liquid pressure of this filling device hardly changes, thus ensuring a large flow rate, high pressure and ultra-high working efficiency.

[0048] In this embodiment, during use, after the operator inserts the mounting ring 4 into the mounting cover 6, the operator rotates the first handwheel 36. The rotation of the first handwheel 36 drives the drive prism 35 to rotate. Simultaneously, the clearance fit between the drive prism 35 and the second drive port 34 drives the second gear 32 to rotate. Furthermore, the meshing of the second gear 32 with the first gear ring 31 and the meshing of the first gear ring 31 with the first gear 30 drives the first gear 30 and the positioning pin 28 to rotate. The rotation of the positioning pin 28 drives the positioning block 29 to extend into the mounting cover 6. Afterwards, the operator rotates the second handwheel 38, which drives the threaded rod 37 to rotate. Simultaneously, the threaded rod 37... The threaded engagement of the adjusting housing 27 causes the adjusting housing 27, the positioning pin 28, and the positioning block 29 to move. The positioning block 29 then pushes the mounting ring 4 into the inner wall of the mounting cover 6, positioning the mounting ring 4 and fixing it to the mounting cover 6. During the movement of the mounting ring 4, the first positioning ring 9 moves accordingly. The mutual compression between the first positioning ring 9 and the bottom of the sealing groove 21 causes the first sealing tube 8 and the second sealing tube 15 to move relative to each other. At this time, the first positioning ring 9 abuts against the abutting ring 13, ensuring that the first sealing port 10 and the second sealing port 19 are respectively aligned with the mounting tube. The inflation pipe 5 and the installation pipe 3 are connected, thus enabling communication between the inflation pipe 5 and the installation pipe 3 through the first sealing port 10, the first sealing pipe 8, the second sealing port 19, and the second sealing pipe 15. This facilitates inflation of the container tank 1. Simultaneously, the third sealing ring 22 seals the first positioning ring 9 and the sealing groove 21, ensuring a tight seal between the inflation pipe 5 and the installation pipe 3 and preventing air leakage. Afterwards, the operator opens the shut-off valve 39 and the angle valve 2, allowing inflation of the container tank 1 through the inflation pipe 5 and the installation pipe 3. After inflation, the operator can reverse the first handwheel 36 and the second handwheel 38 to connect the installation ring 4 and the installation pipe 3. During the separation of the cover 6, the first positioning ring 9, which is close to the angle valve 2, can be pushed by the elastic force of the first support spring 11 to press against the side wall of the first sealing ring 7. Thus, the first sealing ring 12 can seal the first positioning ring 9 and the first sealing ring 7, thereby ensuring the sealing performance of the installation tube 3. At the same time, the second sealing ring 18 on the second sealing disc 16 can be pushed by the elastic force of the second support spring 20 to press against the side wall of the second sealing ring 14. Thus, the second sealing ring 18 can seal the second sealing disc 16 and the second sealing ring 14, thereby ensuring the sealing performance of the inflation tube 5 and preventing gas from the external environment from entering the installation tube 3 and the inflation tube 5.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A gas filling device for a hydrogen storage container, used for filling the container with hydrogen, characterized in that, include: An angle valve is installed on the top side wall of the container body, one end of the angle valve is connected to the container body, and the other end of the angle valve is fixedly provided with an installation pipe; Mounting ring, the mounting ring being fixedly disposed on the outer wall of the mounting tube; An inflation tube is provided on one side of the mounting tube, and the end of the inflation tube away from the angle valve is connected to an external air source. The mounting cover is fixedly installed at one end of the inflation tube near the angle valve. The inner wall of the mounting cover has an installation port that communicates with the inflation tube. The inner wall of the mounting cover is adapted to the shape of the outer wall of the mounting ring. A positioning mechanism is provided on the mounting cover for positioning the mounting ring between the mounting ring and the mounting cover after the mounting ring is inserted into the mounting cover. A first sealing mechanism is disposed inside the mounting tube and is used to seal the mounting tube. A second sealing mechanism is disposed on the mounting cover to seal the mounting opening. Simultaneously, after positioning the mounting ring and the mounting cover, it connects the inflation tube and the mounting tube. The positioning mechanism includes: The first cavity is annularly shaped inside the mounting cover. The sidewall of the first cavity is provided with a plurality of positioning grooves. The sidewall of the positioning groove near the angle valve is provided with a positioning port. The sidewall of the positioning port is provided with a limit groove. The positioning port penetrates the inner wall of the mounting cover. An adjusting housing is provided, wherein an annular adjusting housing is slidably disposed within the first cavity; The side wall of the adjusting housing is rotatably provided with multiple positioning columns, which extend into the positioning groove. A positioning block is fixedly provided at the end of the outer wall of the positioning column near the angle valve. The positioning block is adapted to the shape of the limiting through groove. The positioning mechanism can drive the positioning block to extend into the mounting cover and push the mounting ring to extend into the interior of the mounting cover, thereby cooperating with the inner wall of the mounting cover to install and fix the mounting ring and the mounting cover.

2. The gas filling device for a hydrogen storage container according to claim 1, characterized in that, The first sealing mechanism includes: A first sealing ring is fixedly disposed on the inner wall of the mounting tube at one end near the mounting cover. The first sealing tube is slidably and sealingly disposed within the first sealing ring. Both ends of the outer wall of the first sealing tube are fixedly provided with first positioning rings. The end of the first sealing tube near the angle valve has multiple first sealing ports in an annular shape. The first support spring is fitted onto the outer wall of the first sealing tube, and the two ends of the first support spring abut against the first sealing ring and the first positioning ring on the side away from the angle valve, respectively. The first sealing ring is fixedly provided on the side wall of the first positioning ring near the angle valve.

3. The gas filling device for a hydrogen storage container according to claim 2, characterized in that, It also includes an abutment ring, which is fixedly disposed on the inner wall of the mounting tube on one side of the first sealing ring.

4. The gas filling device for a hydrogen storage container according to claim 3, characterized in that, The second sealing mechanism includes: The second sealing ring is fixedly disposed on the inner wall of the mounting port; The second sealing tube is slidably and sealingly disposed within the second sealing ring. A first sealing disc is fixedly disposed at one end of the outer wall of the second sealing tube near the angle valve, and a second sealing disc is fixedly disposed at one end of the outer wall of the second sealing tube away from the angle valve. A second sealing ring is fixedly disposed on the side wall of the second sealing disc near the angle valve. Multiple second sealing ports are opened in an annular shape at one end of the second sealing tube away from the angle valve. The second support spring is fitted onto the second sealing tube, and its two ends abut against the first sealing disc and the second sealing ring, respectively. A sealing assembly is disposed on the first sealing disc and is used to seal the space between the first sealing disc and the adjacent first positioning ring.

5. The gas filling device for a hydrogen storage container according to claim 4, characterized in that, The sealing assembly includes: A sealing groove is formed on the first sealing plate, the sealing groove is connected to the air inlet pipe, and the shape of the sealing groove is adapted to the first positioning ring. The third sealing ring is fixedly disposed on the side wall of the first positioning ring away from the angle valve.

6. The gas filling device for a hydrogen storage container according to claim 5, characterized in that, The positioning mechanism also includes: A synchronous rotation mechanism is provided on the adjusting housing to drive the multiple positioning columns to rotate synchronously. A moving mechanism is disposed on the adjusting housing and is used to drive the adjusting housing to move within the first cavity.

7. A gas filling device for a hydrogen storage container according to claim 6, characterized in that, The synchronous rotation mechanism includes: The first gear is rotatably disposed inside the adjusting housing on one side of the positioning post, and the positioning post passes through the side wall of the adjusting housing and is fixedly connected to the first gear. A first gear ring is rotatably disposed within the adjusting housing, and the first gear ring meshes with the first gear; The second gear is rotatably disposed within the adjusting housing and meshes with the first gear ring. A drive mechanism is provided on the adjusting housing and is used to drive the second gear to rotate.

8. A gas filling device for a hydrogen storage container according to claim 7, characterized in that, The drive mechanism includes: A first drive port is provided on the adjustment housing; The second drive port is opened on the second gear and is aligned with the first drive port; A driving prism is rotatably disposed within the first cavity. The driving prism passes through the first driving port and the second driving port, and the driving prism is connected to the side wall of the second driving port by a clearance fit. The first handwheel is rotatably mounted on the mounting cover and is fixedly connected to the drive prism.

9. A gas filling device for a hydrogen storage container according to claim 8, characterized in that, The moving mechanism includes: A threaded rod is rotatably disposed within the first cavity, and the threaded rod penetrates the adjusting housing through a threaded engagement; The second handwheel is rotatably mounted on the mounting cover and is fixedly connected to the threaded rod.

10. A gas filling device for a hydrogen storage container according to claim 9, characterized in that, The inflation tube is equipped with a shut-off valve and a pressure gauge.

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