Gas cylinder
By designing the plug-in structure of bottle joints and pipe joints with different hardness and the combination of the tightening sleeve, thread and sealing ring, the leakage problem at the connection between the gas storage cylinder and the gas pipeline is solved, achieving high sealing and safety.
Patent Information
- Application Number
- CN202422599341.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-28
Smart Images
Figure CN223153035U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of gas storage devices, and particularly to gas cylinders. Background Art
[0002] Gas cylinders are mainly used to store various compressed gases, such as hydrogen, etc., and have a wide range of uses. At present, when a gas cylinder is connected and communicated with a gas transmission pipeline, gases such as hydrogen are likely to leak from the connection between the gas cylinder and the gas transmission pipeline, resulting in a reduction in the gas storage safety of the gas cylinder and easily triggering safety accidents. Summary of the Invention
[0003] One advantage of the present disclosure is to provide a gas cylinder with high gas storage safety.
[0004] To achieve at least one of the above advantages of the present disclosure, the present disclosure provides a gas cylinder, including: a gas cylinder body provided with a bottle joint; and a gas transmission pipeline formed with a pipe joint, wherein the hardness of the bottle joint and the pipe joint is different, one of the bottle joint and the pipe joint is formed with an insertion part, and the other is formed with a plug hole; and when the plug hole is in plug-in fit with the insertion part, the one with the smaller hardness among the plug hole and the insertion part is compressed and deformed to form a sealing contact surface between the insertion part and the plug hole.
[0005] According to some embodiments of the present disclosure, the pipe joint is formed with the insertion part, the bottle joint is formed with the plug hole, and the hardness is less than that of the pipe joint;
[0006] And when the insertion part is inserted into the plug hole, the wall surface of the plug hole is extruded and deformed under the interference of the insertion part to form a sealing contact surface that is hermetically coated on at least part of the outer peripheral side of the insertion part.
[0007] According to some embodiments of the present disclosure, the pipe joint is formed with the plug hole, the bottle joint is formed with the insertion part, and the hardness is greater than that of the pipe joint;
[0008] And when the insertion part is inserted into the plug hole, the wall surface of the plug hole is extruded and deformed under the interference of the insertion part to form a sealing contact surface that is hermetically coated on at least part of the outer peripheral side of the insertion part.
[0009] According to some embodiments of the present disclosure, the bottle joint is formed with a first thread;
[0010] The gas cylinder further includes: a tightening sleeve sleeved outside the pipe joint and capable of driving the movement of the pipe joint, and formed with a second thread that mates with the first thread; and when the second thread is screwed into the first thread, the tightening sleeve drives the pipe joint to move towards the bottle joint so that the insertion part is inserted into the plug hole.
[0011] According to some embodiments of the present disclosure, the first thread is formed on the outer peripheral surface of the bottle joint, and the second thread is formed on the inner peripheral surface of the screw-on sleeve.
[0012] According to some embodiments of the present disclosure, the bottle joint forms an enclosing portion for accommodating the insertion portion, the inner peripheral surface of the enclosing portion forms the first thread, and the second thread is formed on the outer peripheral surface of the screw-on sleeve.
[0013] According to some embodiments of the present disclosure, there are two bottle joints, and the two bottle joints are respectively formed at opposite ends of the gas storage cylinder body.
[0014] According to some embodiments of the present disclosure, both the bottle joint and the pipe joint are made of metal.
[0015] According to some embodiments of the present disclosure, a threaded hole is formed on the gas storage cylinder body, and a mating thread capable of cooperating with the threaded hole is provided outside the bottle joint;
[0016] A sealing ring is sleeved outside the bottle joint, and when the mating thread is screwed into the threaded hole, the sealing ring is hermetically filled between the bottle joint and the gas storage cylinder body.
[0017] According to some embodiments of the present disclosure, an annular groove is formed outside the bottle joint, and the sealing ring is installed in the annular groove;
[0018] An elastic ring is further sleeved outside the bottle joint, the elastic ring is arranged in the annular groove, and the elastic ring is configured to undergo elastic deformation when the sealing ring is twisted and to restore the sealing ring to its original state when elastically restored.
[0019] Beneficial effects:
[0020] For the gas storage cylinder of the present disclosure, the sealing effect at the connection between the gas storage cylinder body and the gas transmission pipeline is good, and the gas storage safety is high. Description of the drawings
[0021] Figure 1 It is a schematic structural diagram of the gas storage cylinder according to the first embodiment of the present disclosure.
[0022] Figure 2 It is a cross-sectional view of the gas storage cylinder according to the first embodiment of the present disclosure.
[0023] Figure 3 It is a schematic structural diagram of the bottle joint according to the first embodiment of the present disclosure.
[0024] Figure 4 It is a schematic structural diagram of the elastic ring according to the embodiment of the present disclosure.
[0025] Figure 5 It is a schematic structural diagram of the explosion of the gas transmission pipeline and the bottle joint according to the embodiment of the present disclosure.
[0026] Figure 6 It is a schematic structural view of a gas storage cylinder according to the second embodiment of the present disclosure.
[0027] Figure 7 It is a schematic cross-sectional view of a gas storage cylinder according to the second embodiment of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] 10. Gas storage cylinder body; 101. Gas storage cavity; 102. Threaded hole; 11. Bottle joint; 111. Matching thread; 112. Sealing ring; 113. Elastic ring; 11301. Deformation joint; 114. Rotating operation part; 1101. Communication channel; 1102. Annular groove; 1103. Insertion hole; 115. First thread; 116. Perimeter hole part;
[0030] 20. Gas transmission pipeline; 21. Pipe joint; 211. Insertion part; 212. Flanging part; 213. Annular compression part; 22. Hard pipe; 23. Flexible pipe;
[0031] 30. Tightening sleeve; 31. Second thread. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0032] The following description is used to disclose the present disclosure so that those skilled in the art can implement the present disclosure. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other embodiments, variations, improvements, equivalent solutions, and other technical solutions without departing from the spirit and scope of the present disclosure.
[0033] Those skilled in the art should understand that in the disclosure of the present disclosure, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present disclosure 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. Therefore, the above terms should not be construed as limiting the present disclosure.
[0034] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as a limitation on the number.
[0035] In this disclosure, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, or a connection allowing mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.
[0036] In the related art, gas cylinders are mainly used to store various compressed gases, such as hydrogen, etc., and have a wide range of uses. Currently, when a gas cylinder is connected and communicated with a gas transmission pipeline, gases such as hydrogen are likely to leak from the connection between the gas cylinder and the gas transmission pipeline, resulting in a reduction in the gas storage safety of the gas cylinder and prone to causing safety accidents.
[0037] In view of this, this disclosure provides a gas cylinder. The gas cylinder provided by this disclosure has high gas storage safety, and the stored gas is difficult to leak from the connection between the gas cylinder body and the gas transmission pipeline.
[0038] Figure 1 is a schematic structural diagram of the gas cylinder according to the first embodiment of this disclosure. Figure 2 is a schematic cross-sectional view of the gas cylinder according to the first embodiment of this disclosure. Refer to Figure 1 and Figure 2 In the embodiment of this disclosure, the gas cylinder includes a gas cylinder body 10 and a gas transmission pipeline 20.
[0039] The gas cylinder body 10 is provided with a bottle connector 11. It can be understood that a gas storage cavity 101 is formed inside the gas cylinder body 10. The bottle connector 11 is provided on the gas cylinder body 10, and a communication channel 1101 communicating with the gas storage cavity 101 is formed inside the bottle connector 11, which is used to connect with the external gas transmission pipeline 20, so as to input the gas in the gas transmission pipeline 20 into the gas storage cavity 101 through the bottle connector 11, or output the gas in the gas storage cavity 101 to the gas transmission pipeline 20 through the bottle connector 11 and output it through the gas transmission pipeline 20.
[0040] Optionally, there can be one bottle connector 11, and one bottle connector 11 is provided on the top of the gas cylinder body 10. Or there can also be multiple bottle connectors 11, for example, two, and two bottle connectors 11 are provided at opposite ends of the gas cylinder body 10.
[0041] Figure 3 is a schematic structural diagram of the bottle connector 11 according to the first embodiment of this disclosure. Refer to Figure 2 and Figure 3, a threaded hole 102 is formed on the gas storage cylinder body 10, and a mating thread 111 capable of mating with the threaded hole 102 is provided outside the bottle joint 11. Thus, the bottle joint 11 can be mounted in the threaded hole 102 through the mating thread 111, thereby realizing the installation of the bottle joint 11 on the gas storage cylinder body 10.
[0042] Optionally, a sealing ring 112 is sleeved outside the bottle joint 11, and when the mating thread 111 is screwed into the threaded hole 102, the sealing ring 112 is hermetically filled between the bottle joint 11 and the gas storage cylinder body 10. The sealing ring 112 is convenient to install and simple to operate.
[0043] Specifically, the sealing ring 112 is a sealing rubber ring, and the sealing rubber ring is sleeved outside the bottle joint 11, and it has low cost and is easy to manufacture.
[0044] Optionally, an annular groove 1102 is formed outside the bottle joint 11, and the sealing ring 112 is installed in the annular groove 1102. An elastic ring 113 is also sleeved outside the bottle joint 11. The elastic ring 113 is arranged in the annular groove 1102, and the elastic ring 113 is configured to undergo elastic deformation when the sealing ring 112 is twisted and to make the sealing ring 112 return to its original state when elastically restored.
[0045] Thus, during the process that the sealing ring 112 is driven by the bottle joint 11 to rotate forward, when the sealing ring 112 undergoes temporary torsion, the sealing ring 112 can apply a force to the elastic ring 113, so that the elastic ring 113 undergoes elastic deformation. Moreover, when the bottle joint 11 no longer continues to rotate forward, the elastic ring 113 can return to its original state, and when the elastic ring 113 returns to its original state, it can apply an elastic restoring force to the sealing ring 112, so that the temporary torsional deformation of the sealing ring 112 during rotation is eliminated, and further the sealing ring 112 can return to the untwisted state, and further the sealing ring 112 can be hermetically filled between the gas storage cylinder body 10 and the bottle joint 11 in a good state, ensuring the sealing effect of the sealing ring 112.
[0046] In addition, it can be understood that the sum of the axial lengths of the sealing ring 112 and the elastic ring 113 is less than or equal to the width of the annular groove 1102. Thus, when the sealing ring 112 and the elastic ring 113 are jointly installed in the annular groove 1102, the sides of the sealing ring 112 and the elastic ring 113 away from each other can respectively abut against the two side walls of the annular groove 1102, and the sealing ring 112 and the elastic ring 113 abut against each other to ensure the tight installation of the sealing ring 112. However, it is worth mentioning that when the sealing ring 112 and the elastic ring 113 are installed in the annular groove 1102, they may not abut against each other, and there may be a certain gap between them.
[0047] Figure 4 is a schematic structural diagram of the elastic ring 113 of the embodiment of the present disclosure. Refer to Figure 4 , a deformation joint 11301 penetrating along the thickness direction of the elastic ring 113 is formed. Thus, due to the existence of the deformation joint 11301, the deformation joint 11301 can become larger and smaller, so the elastic ring 113 can undergo elastic deformation and can elastically recover. Specifically, the elastic ring 113 is configured as a plastic ring, and the deformation joint 11301 is inclinedly arranged on the elastic ring 113.
[0048] Optionally, refer to Figure 2 and Figure 3 , a rotation operation part 114 protruding radially is formed on the outside of the bottle joint 11. Thus, when an operator rotates the rotation operation part 114, the bottle joint 11 can be driven by the rotation operation part 114, so as to rotate smoothly and be installed into the threaded hole 102.
[0049] Specifically, the rotation operation part 114 is configured as a polygonal structure. Thus, when an operator performs a rotation operation on the rotation operation part 114, it is not easy to slip, and the rotation operation can be carried out smoothly.
[0050] A pipe joint 21 is formed on the outside of the gas transmission pipeline 20. The hardness of the bottle joint 11 and the pipe joint 21 is different. An insertion part 211 is formed at one end of the bottle joint 11 and the pipe joint 21, and a socket hole 1103 is formed at the other end. When the socket hole 1103 is in plug-in fit with the insertion part 211, the one with the smaller hardness among the socket hole 1103 and the insertion part 211 is compressed and deformed to form a sealing contact surface between the insertion part 211 and the socket hole 1103.
[0051] Refer to Figure 2, in the first embodiment of the present disclosure, the pipe joint 21 is formed with the insertion portion 211. The bottle joint 11 is formed with the insertion hole 1103, and the hardness of the bottle joint 11 is less than that of the pipe joint 21. When the insertion portion 211 is inserted into and cooperates with the insertion hole 1103, the wall surface of the insertion hole 1103 is extruded and deformed under the interference of the insertion portion 211, so as to be deformed to form a sealing contact surface that can hermetically wrap at least part of the outer peripheral side of the insertion portion 211, thereby forming a seal between the insertion hole 1103 and the insertion portion 211.
[0052] In other words, among the pipe joint 21 and the bottle joint 11, the pipe joint 21 has a greater hardness and a harder material, while the bottle joint 11 has a smaller hardness and a softer material. Thus, when the insertion portion 211 of the pipe joint 21 is inserted into the insertion hole 1103 of the bottle joint 11 and interferes with the inner peripheral surface of the insertion hole 1103, the inner peripheral surface of the insertion hole 1103 will be extruded by the insertion portion 211 and thus deformed, and the deformed part wraps at least part of the outer peripheral side of the insertion portion 211, thereby forming an annular sealing area between the inner peripheral surface of the insertion hole 1103 and the outer peripheral surface of the insertion portion 211.
[0053] Figure 5 is a schematic structural view of the gas transmission pipeline 20 and the bottle joint 11 exploded in the embodiment of the present disclosure. Refer to Figure 2 and Figure 5 , the inner peripheral surface of the insertion hole 1103 can be a first curved surface formed by rotating an inclined straight line around an axis. The outer peripheral surface of the insertion portion 211 can be a second curved surface formed by rotating an arc that bulges outwards in the middle around an axis, and the second curved surface can interfere with the first curved surface. Thus, when the insertion portion 211 is inserted into the insertion hole 1103 and interferes, part of the outer peripheral side of the insertion portion 211 will be squeezed into the inner peripheral surface of the insertion hole 1103 and be wrapped by the inner peripheral surface of the insertion hole 1103, thereby forming an annular sealing area between the pipe joint 21 and the bottle joint 11.
[0054] Figure 6 is a schematic structural view of the gas storage cylinder in the second embodiment of the present disclosure. Figure 7 is a schematic cross-sectional view of the gas storage cylinder in the second embodiment of the present disclosure. Refer to Figure 6 and Figure 7, in the second embodiment of the present disclosure, the pipe joint 21 is formed with the insertion hole 1103, the bottle joint 11 is formed with the insertion portion 211, and the hardness of the bottle joint 11 is greater than that of the pipe joint 21. When the insertion portion 211 is inserted into the insertion hole 1103, the wall surface of the insertion hole 1103 is squeezed and deformed under the interference of the insertion portion 211, so as to be deformed to form a sealing contact surface that can hermetically cover at least part of the outer peripheral side of the insertion portion 211, thereby forming a seal between the insertion hole 1103 and the insertion portion 211.
[0055] In other words, among the pipe joint 21 and the bottle joint 11, the bottle joint 11 has a greater hardness and a harder material. The pipe joint 21 has a smaller hardness and a softer material. Thus, when the insertion portion 211 of the bottle joint 11 is inserted into the insertion hole 1103 of the pipe joint 21 and interferes with the insertion hole 1103, the insertion hole 1103 will be squeezed by the insertion portion 211 and deformed under force, and the deformed part covers at least part of the outer peripheral side of the insertion portion 211, thereby forming an annular sealing area between the pipe joint 21 and the bottle joint 11.
[0056] Exemplarily, the circumferential edge at the port of the pipe joint 21 is turned inward to form a flanging portion 212, the flanging portion 212 encloses the insertion hole 1103, the bottle joint 11 is formed with the insertion portion 211, and when the insertion portion 211 is inserted into the insertion hole 1103, the flanging portion 212 is squeezed and deformed due to its smaller hardness, so that the insertion portion 211 is covered by the flanging portion 212, forming an annular sealing surface from the line seal at the location of the insertion portion 211 and the insertion hole 1103, thereby realizing the seal between the bottle joint 11 and the pipe joint 21.
[0057] Optionally, both the pipe joint 21 and the bottle joint 11 are made of metal materials with stable performance. After the pipe joint 21 and the bottle joint 11 are sealed, even if the external temperature changes, the seal formed by the pipe joint 21 and the bottle joint 11 is difficult to fail, and the sealed state can be maintained for a long time.
[0058] Optionally, refer to Figure 1 and Figure 2, the gas pipeline 20 further includes a pipeline section. The pipeline section is communicated with the pipe joint 21 and is used for transporting gas. The pipeline section includes a hard pipe 22 and a flexible pipe 23. The hard pipe 22 is connected to the pipe joint 21. The flexible pipe 23 is connected to one end of the hard pipe 22 away from the pipe joint 21. Thus, when the gas storage cylinder is assembled, it is convenient to hold the hard pipe 22 and dock the pipe joint 21 with the bottle joint 11. Moreover, the flexible pipe 23 has the advantage of being flexibly bendable, which is convenient for the connection of the gas storage cylinder with other gas devices, such as a gas distribution device or an inflation device, in a limited space.
[0059] Optionally, refer to Figure 2 , the bottle joint 11 is formed with a first thread 115. The gas storage cylinder further includes a tightening sleeve 30. The tightening sleeve 30 can drive the pipe joint 21 to movably sleeve outside the pipe joint 21 and form a second thread 31 that cooperates with the first thread 115. When the second thread 31 is screwed into the first thread 115, the insertion portion 211 is inserted and cooperated with the insertion hole 1103.
[0060] In some examples, the first thread 115 is formed on the outer peripheral surface of the bottle joint 11, the second thread 31 is formed on the inner peripheral surface of the tightening sleeve 30, and when the second thread 31 is screwed into the first thread 115, the tightening sleeve 30 presses the pipe joint 21 to move towards the bottle joint 11, so that the insertion portion 211 is inserted into the insertion hole 1103.
[0061] Optionally, refer to Figure 2 and Figure 5 , an annular pressure-receiving portion 213 extending radially outward is formed on the outer peripheral surface of the insertion portion 211, and the annular pressure-receiving portion 213 is configured to be abutted against the tightening sleeve 30. Thus, when the tightening sleeve 30 rotates forward towards the bottle joint 11, the tightening sleeve 30 presses the annular pressure-receiving portion 213, thereby driving the insertion portion 211 to be inserted into the insertion hole 1103 of the bottle joint 11.
[0062] In some other examples, refer to Figure 7 , the bottle joint 11 forms an enclosing portion 116 for internally placing the insertion portion 211, and the inner peripheral surface of the enclosing portion 116 forms the first thread 115. The second thread 31 is formed on the outer peripheral surface of the tightening sleeve 30. Thus, when the second thread 31 of the tightening sleeve 30 is screwed into the first thread 115, the tightening sleeve 30 presses the pipe joint 21 to move towards the bottle joint 11, so that the insertion portion 211 is inserted into the insertion hole 1103.
[0063] Optionally, the end of the pipe joint 21 is conical, and the tightening sleeve 30 can be sleeved outside the pipe joint 21 in contact with the conical surface of the pipe joint 21. Thus, when the second thread 31 of the tightening sleeve 30 is screwed into the first thread 115 of the surrounding portion 116, the tightening sleeve 30 will press the conical pipe joint 21 towards the bottle joint 11.
[0064] Those skilled in the art should understand that the embodiments of the present disclosure described above and shown in the drawings are only examples and do not limit the present disclosure. The advantages of the present disclosure have been fully and effectively realized. The functions and structural principles of the present disclosure have been shown and described in the embodiments, and the embodiments of the present disclosure can have any variations or modifications without departing from the principles.
Claims
1. Gas storage cylinder, characterized in that, Comprising: A gas storage cylinder body provided with a bottle joint; And A gas transmission pipeline formed with a pipe joint, wherein the hardness of the bottle joint and the pipe joint is different, one of the bottle joint and the pipe joint is formed with an insertion portion, and the other is formed with a socket hole; and when the socket hole is inserted and fitted with the insertion portion, the one with the smaller hardness among the socket hole and the insertion portion is compressed and deformed to form a sealing contact surface between the insertion portion and the socket hole.
2. The gas storage cylinder according to claim 1, characterized in that, The pipe joint is formed with the insertion portion, the bottle joint is formed with the socket hole, and the hardness is less than that of the pipe joint; And when the insertion portion is inserted into the socket hole, the wall surface of the socket hole is extruded and deformed under the interference of the insertion portion to form a sealing contact surface that hermetically wraps at least part of the outer peripheral side of the insertion portion.
3. The gas storage cylinder according to claim 1, wherein The pipe joint is formed with the socket hole, the bottle joint is formed with the insertion portion, and the hardness is greater than that of the pipe joint; And when the insertion portion is inserted into the socket hole, the wall surface of the socket hole is extruded and deformed under the interference of the insertion portion to form a sealing contact surface that hermetically wraps at least part of the outer peripheral side of the insertion portion.
4. The gas storage cylinder according to claim 1, wherein The bottle joint is formed with a first thread; The gas storage cylinder further comprises: a tightening sleeve sleeved outside the pipe joint and capable of driving the pipe joint to move, and formed with a second thread that mates with the first thread; and when the second thread is screwed into the first thread, the tightening sleeve drives the pipe joint to move towards the bottle joint so that the insertion portion is inserted into the socket hole.
5. The gas storage cylinder according to claim 4, characterized in that, The first thread is formed on the outer peripheral surface of the bottle joint, and the second thread is formed on the inner peripheral surface of the tightening sleeve.
6. The gas storage cylinder according to claim 4, characterized in that, The bottle joint forms an enclosing portion for internally placing the insertion portion, the inner peripheral surface of the enclosing portion forms the first thread, and the second thread is formed on the outer peripheral surface of the tightening sleeve.
7. The gas storage cylinder according to claim 1, characterized in that, There are two bottle joints, and the two bottle joints are respectively formed at opposite ends of the gas storage cylinder body.
8. The gas storage cylinder according to claim 1, characterized in that, Both the bottle joint and the pipe joint are made of metal.
9. The gas storage cylinder according to claim 1, wherein, A threaded hole is formed on the gas storage cylinder body, and a mating thread capable of mating with the threaded hole is provided outside the bottle joint; A sealing ring is sleeved outside the bottle joint, and when the mating thread is screwed into the threaded hole, the sealing ring is hermetically filled between the bottle joint and the gas storage cylinder body.
10. The gas storage cylinder according to claim 1, characterized in that, An annular groove is formed outside the bottle joint, and the sealing ring is installed in the annular groove; An elastic ring is further sleeved outside the bottle joint, the elastic ring is arranged in the annular groove, and the elastic ring is configured to undergo elastic deformation when the sealing ring is twisted and to make the sealing ring return to its original state when elastically restored.