Gas cylinder

Abstract

The utility model provides a gas cylinder which comprises a cylinder body provided with a cylinder opening and a gas storage cavity communicated with the cylinder opening. The temperature detection part is provided with a connecting end and a detection end, the detection end is located in the gas storage cavity, and the connecting end is connected with the bottle body; the multiple temperature detection parts are arranged, and the detection ends of the multiple temperature detection parts are distributed at intervals in the length direction of the bottle body. By means of the scheme, the problem that in the prior art, the real state of the internal temperature of the gas cylinder in the hydrogen charging and hydrogen discharging process cannot be accurately mastered due to the fact that the temperature measuring assembly is installed at the bottle opening can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas cylinders, and particularly to a gas cylinder. Background Art

[0002] As a key component of hydrogen fuel cell vehicles, the design and material selection of hydrogen storage gas cylinders are crucial for the performance and safety of the vehicles. Currently, seamless aluminum inner liners are mainly used for hydrogen storage gas cylinders. Although they have good pressure resistance, they are relatively heavy, which to a certain extent limits the load capacity and energy efficiency ratio of the vehicles. To reduce the product weight and improve the overall performance, the industry has started to explore the use of fully wound gas cylinders with plastic inner liners. Such gas cylinders are not only lightweight but also have high strength and good corrosion resistance.

[0003] During the rapid hydrogen charging and discharging processes of hydrogen fuel cell electric vehicles, the temperature inside the gas cylinder will change rapidly, resulting in uneven gas temperature distribution. This rapid temperature change and uneven distribution may damage the plastic inner liner of the gas cylinder, thereby affecting the service life and safety of the hydrogen storage gas cylinder. Especially when the hydrogen temperature exceeds or is lower than the operating temperature range of the gas cylinder, the plastic inner liner may deform or be damaged, which not only reduces the service life of the gas cylinder but also may pose safety risks.

[0004] In the prior art, a temperature measuring component is usually installed at the bottle mouth to monitor the temperature of the gas inside the gas cylinder. However, installing the temperature measuring component at the bottle mouth makes it impossible to accurately grasp the true state of the internal temperature of the gas cylinder during the hydrogen charging and discharging processes, and it is thus difficult to take effective control measures to optimize the filling strategy and ensure the safe operation of the gas cylinder. Summary of the Utility Model

[0005] The utility model provides a gas cylinder to solve the technical problem in the prior art that installing the temperature measuring component at the bottle mouth makes it impossible to accurately grasp the true state of the internal temperature of the gas cylinder during the hydrogen charging and discharging processes.

[0006] The utility model provides a gas cylinder, which includes: a bottle body having a bottle mouth and a gas storage cavity communicating with the bottle mouth; a temperature detection part having a connection end and a detection end, the detection end being located inside the gas storage cavity and the connection end being connected to the bottle body; and a plurality of temperature detection parts are provided, and the detection ends of the plurality of temperature detection parts are spaced apart along the length direction of the bottle body.

[0007] Further, the bottle body includes a bottom wall opposite to the bottle mouth, the connection ends of the plurality of temperature detection parts are respectively connected to the bottom wall, the detection ends are arranged at one end of the temperature detection part far from the connection end, and the lengths of any two temperature detection parts are different.

[0008] Further, the bottle body includes: a bottle and a plugging part. The bottle mouth and the air storage cavity are respectively arranged on the bottle. The bottle is further provided with a first mounting port which communicates with the air storage cavity. The plugging part is arranged at the first mounting port, and the connection ends of multiple temperature detection parts are respectively connected to the plugging part.

[0009] Further, the bottle includes: a main body part, the bottle mouth and the air storage cavity are respectively arranged on the main body part, and a second mounting port is arranged at one end of the main body part far away from the bottle mouth; a mounting seat arranged at the second mounting port, and the first mounting port is arranged on the mounting seat.

[0010] Further, the plugging part is threadedly connected to the mounting seat through the first mounting port.

[0011] Further, the temperature detection part extends along the length direction of the bottle body; or, the temperature detection part includes a first section and a second section connected to each other, and there is an included angle between the first section and the second section. The first section extends along the length direction of the bottle body, and one end of the first section far away from the second section forms a connection end, and one end of the second section far away from the first section forms a detection end.

[0012] Further, a plurality of clamping grooves are arranged at one end of the plugging part extending into the air storage cavity, and the clamping grooves are arranged in one-to-one correspondence with the temperature detection parts, and the connection end is inserted into the clamping groove.

[0013] Further, an installation groove is arranged on the side wall of the connection end, and the installation groove is annularly arranged along the circumferential direction of the connection end on the side wall of the connection end. The gas cylinder further includes: a sealing ring embedded in the installation groove and located in the clamping groove.

[0014] Further, the temperature detection part includes: a temperature sensor body and a signal wire connected to each other. The temperature sensor body has a connection end and a detection end arranged oppositely. A through hole is arranged on the plugging part, one end of the through hole communicates with the clamping groove, and the other end of the through hole extends to the outer end face of the plugging part. One end of the signal wire is electrically connected to the detection end, and the other end extends out of the bottle body through the through hole.

[0015] Further, the diameter of the opening of the clamping groove gradually increases in the direction away from the bottom of the clamping groove.

[0016] Applying the technical solution of the present utility model, by inserting the detection end of the temperature detection part into the gas storage cavity, the temperature of the gas inside the gas cylinder can be directly measured; multiple temperature detection parts are provided in this solution, and the detection ends of the multiple temperature detection parts are spaced along the length direction of the cylinder body. With such a setting, the temperature at different depths inside the cylinder body can be detected, and the temperature state inside the cylinder body can be detected more accurately, so as to take measures before the temperature change exceeds the safe range and prevent damage to the plastic inner liner of the gas cylinder. Moreover, with the above setting, according to the detected hydrogen temperature inside the gas cylinder, the filling process can be better controlled, the stability of the temperature inside the gas cylinder can be controlled as much as possible, and the safety of the filling process can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The schematic diagram of the drawings forming a part of this application is used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 shows the schematic structural diagram of the gas cylinder provided by the embodiment of the present utility model;

[0019] Figure 2 shows the schematic structural diagram of the cooperation between the plugging part and the temperature detection part provided by the embodiment of the present utility model;

[0020] Figure 3 shows the schematic structural diagram of one of the temperature detection parts provided by the embodiment of the present utility model;

[0021] Figure 4 shows the schematic structural diagram of another temperature detection part provided by the embodiment of the present utility model.

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 10, cylinder body; 101, bottle mouth; 102, gas storage cavity;

[0024] 11, bottle body; 1101, first installation port; 1102, second installation port;

[0025] 111, body part; 112, mounting seat;

[0026] 12, plugging part; 1201, clamping groove; 1202, perforation;

[0027] 20, temperature detection part; 201, connection end; 2011, installation groove; 202, detection end;

[0028] 21, first section; 22, second section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a gas cylinder, which includes a bottle body 10 and a temperature detection unit 20. The bottle body 10 has a bottle mouth 101 and a gas storage cavity 102 connected to the bottle mouth 101; the temperature detection unit 20 has a connecting end 201 and a detection end 202 that are arranged opposite to each other, the detection end 202 is located in the gas storage cavity 102, and the connecting end 201 is connected to the bottle body 10. In this embodiment, a plurality of temperature detection units 20 are provided, and the detection ends 202 of the plurality of temperature detection units 20 are spaced apart along the length direction of the bottle body 10.

[0031] By applying the technical solution of the present utility model, the temperature of the gas inside the gas cylinder can be directly measured by extending the detection end 202 of the temperature detection unit 20 into the gas storage cavity 102; the setting of multiple temperature detection units 20 provides more accurate internal temperature data of the gas cylinder, which can timely detect local overheating or overcooling in the gas cylinder, and help to more accurately grasp the temperature change, so as to take measures before the temperature change exceeds the safe range to prevent the plastic liner of the gas cylinder from being damaged. In addition, the above-mentioned setting can better control the filling process according to the detected hydrogen temperature in the gas cylinder, control the stability of the internal temperature of the gas cylinder as much as possible, and improve the safety of the filling process. This solution does not limit the specific number of temperature detection units 20. In this solution, at least one temperature detection unit 20 is provided.

[0032] In the embodiment of the present solution, the bottle body 10 includes a bottom wall arranged opposite to the bottle mouth 101, the connection ends 201 of the plurality of temperature detection parts 20 are respectively connected to the bottom wall, the detection end 202 is arranged at an end of the temperature detection part 20 away from the connection end 201, and the lengths of any two temperature detection parts 20 are different. Such an arrangement can facilitate the determination of the positions of the plurality of temperature detection ends 202, and the above arrangement is highly flexible, and is convenient for determining the temperature detection parts 20 of different lengths according to actual usage conditions.

[0033] Specifically, the bottle body 10 includes a bottle 11 and a plugging portion 12. The bottle mouth 101 and the gas storage cavity 102 are respectively arranged on the bottle 11. The bottle 11 is further provided with a first installation opening 1101 which communicates with the gas storage cavity 102. The plugging portion 12 is arranged at the first installation opening 1101. The connection ends 201 of multiple temperature detection portions 20 are respectively connected to the plugging portion 12. By integrating the connection ends 201 of multiple temperature detection portions 20 on the plugging portion 12, in this way, during assembly, it is convenient to extend the detection end 202 of the temperature detection portion 20 into the bottle body. Moreover, since the connection ends 201 of multiple temperature detection portions 20 are integrated on the same plugging portion 12, the assembly process of the gas cylinder can be simplified.

[0034] It can be understood that the end face of the plugging portion 12 facing the bottle mouth 101 forms a part of the bottom wall of the bottle body 10.

[0035] In an embodiment of this solution, the bottle 11 includes a main body portion 111 and a mounting base 112. Among them, the bottle mouth 101 and the gas storage cavity 102 are respectively arranged on the main body portion 111. The bottle mouth 101 is arranged at one end in the length direction of the gas storage cavity 102. A second installation opening 1102 is provided at the end of the main body portion 111 away from the bottle mouth 101. The mounting base 112 is arranged at the second installation opening 1102, and the first installation opening 1101 is arranged on the mounting base 112. That is, the bottle mouth 101 and the plugging portion 12 are arranged at two opposite ends of the gas cylinder along the length direction. The design of the mounting base 112 ensures the sealing between it and the second installation opening 1102, prevents gas leakage, and guarantees the safe use of the gas cylinder.

[0036] Specifically, the plugging portion 12 is threadedly connected to the mounting base 112 through the first installation opening 1101. Threaded connection helps to achieve a better sealing effect, prevent gas leakage, and ensure the safe use of the gas cylinder. Threaded connection simplifies the assembly process, enabling the installation of the plugging portion 12 and the mounting base 112 to be completed quickly and conveniently. Moreover, with the above arrangement, it is convenient to disassemble and maintain the plugging portion 12 or the mounting base 112, reducing the maintenance difficulty and cost.

[0037] Such as Figure 3As shown, in the embodiment of the present solution, a part of the temperature detection unit 20 includes a first section 21 and a second section 22 that are connected to each other. There is an included angle between the first section 21 and the second section 22. The first section 21 extends along the length direction of the bottle body 10. One end of the first section 21 away from the second section 22 forms a connection end 201. The second section 22 extends along the radial direction of the bottle body 10. One end of the second section 22 away from the first section 21 forms a detection end 202. Specifically, the first section 21 and the second section 22 are perpendicularly arranged, that is, the second section 22 extends along the radial direction of the gas cylinder. The above setting enables multiple temperature detection units 20 of the present solution to better adapt to the internal space layout of the gas cylinder and facilitates the detection of the temperature at different positions in the radial direction inside the gas cylinder.

[0038] As Figure 4 shown, in the embodiment of the present solution, another part of the temperature detection unit 20 extends along the length direction of the bottle body 10.

[0039] As Figure 1 and Figure 2 shown, specifically, one end of the blocking part 12 extending into the gas storage cavity 102 is provided with a plurality of clamping grooves 1201. The clamping grooves 1201 are arranged in one-to-one correspondence with the temperature detection unit 20, and the connection end 201 is inserted into the clamping groove 1201. The clamping groove 1201 provides an accurate installation position for the temperature detection unit 20 and enables the connection end 201 to be quickly clamped with the blocking part 12, simplifying the assembly process and improving the assembly efficiency.

[0040] The temperature detection unit 20 of the present solution is connected to the bottle body 10 by a plug-in method, which simplifies the installation process of the temperature detection unit 20, reduces the installation time and cost, and improves the convenience of maintenance and replacement at the same time. Moreover, the plug-in design has good versatility and can adapt to gas cylinders of different models and specifications, increasing the applicable range of the solution.

[0041] Furthermore, an installation groove 2011 is provided on the side wall of the connection end 201. The installation groove 2011 is annularly arranged along the circumferential direction of the connection end 201 on the side wall of the connection end 201. The gas cylinder further includes a sealing ring, and the sealing ring is embedded in the installation groove 2011 and is located in the clamping groove 1201. The circumferential annular arrangement of the installation groove 2011 simplifies the assembly process of the sealing ring, making the installation of the sealing ring faster and more accurate. Moreover, the above setting enhances the connection stability between the connection end and the clamping groove 1201. And due to the setting of the sealing ring, the possibility of gas leakage of the present device can be reduced or avoided, ensuring the sealing safety of the gas cylinder.

[0042] In an embodiment of this solution, the temperature detection unit 20 includes a temperature sensor body and a signal line connected to each other. The temperature sensor body has a connection end 201 and a detection end 202 arranged opposite to each other. A perforation 1202 is provided on the blocking portion 12. One end of the perforation 1202 communicates with the clamping groove 1201. One end of the signal line is electrically connected to the detection end 202, and the other end extends outside the bottle body 10 through the perforation 1202. With such a setting, its structural design is relatively reasonable, facilitating the connection of the signal line to other control systems.

[0043] Specifically, the perforation 1202 communicates with the bottom end of the clamping groove 1201. With such a setting, the signal lines of multiple temperature detection units 20 all extend from the same side of the bottle body 10, facilitating the management and storage of the signal lines.

[0044] Furthermore, the connection end 201 of the temperature detection unit 20 is generally cylindrical in structure, and the shape of the cross-section of the clamping groove 1201 is adapted to the shape of the connection end 201 of the temperature detection unit 20. The diameter of the opening of the clamping groove 1201 gradually increases in the direction away from the bottom of the clamping groove 1201. With such a setting, the opening of the clamping groove 1201 has a guiding effect on the connection end 201 of the temperature detection unit 20, enabling the connection end 201 to be smoothly inserted into the clamping groove 1201, reducing the difficulty of aligning the connection end 201 and the clamping groove 1201 during assembly, and simplifying the entire assembly process.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0047] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0048] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used here are made accordingly.

[0049] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0050] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A gas cylinder, characterized in that, The gas cylinder includes: A cylinder body (10) having a bottle mouth (101) and a gas storage cavity (102) communicating with the bottle mouth (101); A temperature detection part (20) having a connection end (201) and a detection end (202). The detection end (202) is located in the gas storage cavity (102), and the connection end (201) is connected to the cylinder body (10). A plurality of the temperature detection parts (20) are provided, and the detection ends (202) of the plurality of temperature detection parts (20) are spaced apart along the length direction of the cylinder body (10).

2. The gas cylinder according to claim 1, wherein, The cylinder body (10) includes a bottom wall opposite to the bottle mouth (101). The connection ends (201) of the plurality of temperature detection parts (20) are respectively connected to the bottom wall. The detection end (202) is provided at one end of the temperature detection part (20) away from the connection end (201), and the lengths of any two of the temperature detection parts (20) are different.

3. The gas cylinder according to claim 1, wherein, The cylinder body (10) includes: A cylinder (11) and a plugging part (12). The bottle mouth (101) and the gas storage cavity (102) are respectively provided on the cylinder (11). The cylinder (11) is further provided with a first installation opening (1101) communicating with the gas storage cavity (102). The plugging part (12) is provided at the first installation opening (1101), and the connection ends (201) of the plurality of temperature detection parts (20) are respectively connected to the plugging part (12).

4. The gas cylinder according to claim 3, characterized in that, The cylinder (11) includes: A main body part (111). The bottle mouth (101) and the gas storage cavity (102) are respectively provided on the main body part (111). A second installation opening (1102) is provided at one end of the main body part (111) away from the bottle mouth (101); An installation seat (112) provided at the second installation opening (1102), and the first installation opening (1101) is provided on the installation seat (112).

5. The gas cylinder according to claim 4, wherein, The plugging part (12) is threadedly connected to the installation seat (112) through the first installation opening (1101).

6. The gas cylinder according to any one of claims 1 to 5, characterized in that The temperature detection part (20) extends along the length direction of the cylinder body (10); or The temperature detection part (20) includes a first section (21) and a second section (22) connected to each other. There is an included angle between the first section (21) and the second section (22). The first section (21) extends along the length direction of the cylinder body (10). One end of the first section (21) away from the second section (22) forms the connection end (201), and one end of the second section (22) away from the first section (21) forms the detection end (202).

7. The gas cylinder according to claim 3, characterized in that, One end of the plugging part (12) extending into the gas storage cavity (102) is provided with a plurality of clamping grooves (1201). The clamping grooves (1201) are arranged in one-to-one correspondence with the temperature detection parts (20), and the connection end (201) is inserted into the clamping groove (1201).

8. The gas cylinder according to claim 7, characterized in that, An installation groove (2011) is provided on the side wall of the connection end (201). The installation groove (2011) is annularly arranged along the circumferential direction of the connection end (201) on the side wall of the connection end (201). The gas cylinder further includes: A sealing ring, which is embedded in the installation groove (2011) and located in the clamping groove (1201).

9. The gas cylinder according to claim 7, characterized in that, The temperature detection part (20) includes: A temperature sensor body and a signal wire that are connected to each other. The temperature sensor body has the connection end (201) and the detection end (202) arranged opposite to each other. A perforation (1202) is provided on the blocking part (12). One end of the perforation (1202) communicates with the clamping groove (1201), and the other end of the perforation (1202) extends to the outer end face of the blocking part (12). One end of the signal wire is electrically connected to the detection end (202), and the other end extends outside the bottle body (10) through the perforation (1202).

10. The gas cylinder according to claim 7, wherein, The diameter of the opening of the clamping groove (1201) gradually increases in the direction away from the bottom of the clamping groove (1201).

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