Hydrogen filling hose with fracture protection function

Abstract

The utility model relates to the technical field of hydrogen filling hoses, in particular to a hydrogen filling hose with a fracture protection function, which comprises two groups of connectors, a protection hose and a gas transmission hose are connected between the two groups of connectors, the gas transmission hose is positioned on the inner side of the protection hose, and the left end of the left connector is connected with a gas transmission head. An air conveying valve is arranged in the air conveying head, the right end of the right side connector is connected with an air inflation head, and an air inflation valve is arranged in the air inflation head. The leaked hydrogen can be filled to the inner side of the protective hose, so that the inner side of the protective hose is inflated and swelled, the problem of hydrogen leakage can be found in time and concrete, the gas transmission valve and the inflation valve can be closed in time, continuous hydrogen leakage is avoided, the leaked hydrogen can be stored in the inner side of the protective hose, and the hydrogen is prevented from being diffused into the air; and the operation production safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen filling hoses, in particular to a hydrogen filling hose with a breakage protection function. Background Art

[0002] Hydrogen is a clean energy source. Its transportation mainly includes the transportation of compressed hydrogen, the transportation of liquid hydrogen, the transportation using hydrogen storage media, the transportation using pipelines, and the transportation of manufacturing raw materials. However, before transportation, it needs to be filled into hydrogen cylinders using filling hoses to facilitate transportation. Filling hoses are prone to breakage during long-term use, posing a safety hazard.

[0003] Among them, announcement number CN215807896U discloses a hydrogen filling hose with a break protection function, including a hose body, joints connected to both ends of the hose body, a clamp connected to the connection between the joint and the hose body, a break valve connected to the outside of the hose body, and a dehumidification mechanism provided on the external surface of the hose body on the side of the break valve, the dehumidification mechanism including a metal pipe connected to the hose body. The utility model absorbs moisture entering the hose body by filling a dehumidifier between the annular plate, the metal plate and the sealing plate, thereby preventing the inner wall of the hose body from rusting and corroding due to the presence of moisture, thereby ensuring the quality of the next hydrogen filling. Furthermore, when the hose body breaks or is dragged due to misoperation, the break valve can prevent hydrogen from leaking through the fracture, while preventing the dragging of the hose body from causing damage to the equipment.

[0004] During use, the device can prevent hydrogen leakage from the fracture through the break valve. However, since hydrogen is colorless, transparent and has no special smell, it is difficult to detect hydrogen leakage in time, which will make it impossible to close the break valve in time. As a result, some hydrogen will leak into the air, posing a safety hazard to production.

[0005] Therefore, it is necessary to invent a hydrogen filling hose with a break protection function to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a hydrogen filling hose with a break protection function to solve the problem that it is difficult to detect hydrogen leakage in time, which leads to the inability to close the break valve in time, so some hydrogen leaks into the air, posing a safety hazard to production.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a hydrogen filling hose with a break protection function, including a connector, wherein two groups of connectors are provided, and a protective hose and a gas hose are connected between the two groups of connectors, and the gas hose is located on the inner side of the protective hose. The left end of the left connector is connected to the gas supply head, and a gas supply valve is provided inside the gas supply head. The right end of the right connector is connected to the inflation head, and an inflation valve is provided inside the inflation head.

[0008] By adopting the above technical solution, the gas hose is used to transport hydrogen. When hydrogen leaks from the gas hose, the hydrogen will be filled between the gas hose and the protective hose, causing the inner side of the protective hose to bulge, so that the hydrogen leakage problem can be discovered in a timely and concrete manner, and the gas valve and the inflation valve can be closed in time to prevent further leakage of hydrogen. The leaked hydrogen will be stored between the protective hose and the gas hose to prevent the hydrogen from diffusing into the air, thereby improving operational production safety.

[0009] Optionally, the outer ends of the two groups of connectors are fixedly connected to a first connecting tube, and the surface of the first connecting tube close to the outer end is fixedly connected to a first positioning ring.

[0010] Optionally, a second connecting tube is sleeved on the surface of the first connecting tube, and an inner end of the second connecting tube is fixedly connected to a second positioning ring, and the second positioning ring is slidably connected to the surface of the first connecting tube.

[0011] By adopting the above technical solution, the second connecting pipe slides on the surface of the first connecting pipe, and the first positioning ring cooperates with the second positioning ring to limit the position of the second connecting pipe.

[0012] Optionally, the gas delivery head and the inflation head are fixedly connected to a fixed tube at one end close to the connecting head, a threaded groove is provided on the surface of the fixed tube, the outer end of the first connecting tube is inserted into the inner side of the fixed tube, and a threaded ring is provided on the inner surface of the second connecting tube, and the second connecting tube is threadedly connected to the surface of the fixed tube.

[0013] By adopting the above technical solution, the first connecting pipe is inserted into the inner side of the fixed pipe, the second connecting pipe is threadedly connected to the fixed pipe, and then the connecting head is connected to the gas supply head and the inflation head respectively.

[0014] Optionally, one inner end of each of the two groups of connectors is fixedly connected to a first plug-in tube, and a first anti-slip groove is provided on the surface of the first plug-in tube.

[0015] Optionally, both ends of the protective hose are respectively sleeved on the surfaces of the first plug-in tubes on the left and right sides, and both ends of the protective hose are sleeved with first fixing rings.

[0016] By adopting the above technical solution, the first anti-slip groove improves the tightness of the connection between the protective hose and the first plug-in tube, and the first fixing ring is used to tightly fix the protective hose and the first plug-in tube.

[0017] Optionally, a second plug-in tube is fixedly connected to one inner end of the first plug-in tube, and a second anti-slip groove is provided on the surface of the second plug-in tube.

[0018] Optionally, both ends of the gas delivery hose are respectively sleeved on the surfaces of the second plug-in tubes on the left and right sides, and both ends of the gas delivery hose are sleeved and connected with second fixing rings.

[0019] By adopting the above technical solution, the second anti-slip groove improves the tightness of the connection between the gas hose and the second plug-in tube, and the second fixing ring is used to tightly fix the gas hose and the second plug-in tube.

[0020] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0021] 1. The utility model uses a protective hose to perform protective detection on the surface of the gas hose. When hydrogen leaks from the gas hose, hydrogen will be filled between the gas hose and the protective hose, causing the inner side of the protective hose to swell. This allows for timely and concrete detection of hydrogen leakage, facilitating the timely closure of the gas valve and the inflation valve to prevent further hydrogen leakage, thereby improving production safety.

[0022] 2. The utility model seals the two ends of the protective hose with the first plug-in tube, so that leaked hydrogen is stored between the protective hose and the gas hose, preventing hydrogen from diffusing into the air, thereby further improving operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 (Protective hose in normal condition);

[0024] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 (When the protective hose is inflated);

[0025] Figure 3 This is a schematic diagram of the structure of the gas delivery head and the gas charging head of the utility model;

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the connector of the present invention Figure 1 (When the protective hose is connected to the gas hose);

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the connector of the present invention Figure 2 (When the protective hose and the gas hose are separated).

[0028] Description of reference numerals:

[0029] 1. Connecting head; 11. First plug-in tube; 12. First anti-slip groove; 13. Second plug-in tube; 14. Second anti-slip groove; 15. First connecting tube; 16. First positioning ring; 17. Second connecting tube; 18. Second positioning ring; 2. Protective hose; 21. First fixing ring; 22. Gas hose; 23. Second fixing ring; 3. Gas supply head; 31. Gas supply valve; 4. Inflating head; 41. Inflating valve. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The utility model provides Figures 1 to 5 The hydrogen filling hose with a break protection function shown in the figure includes a connector 1, which is provided with two groups. A protective hose 2 and a gas hose 22 are connected between the two groups of connectors 1. The gas hose 22 is located on the inner side of the protective hose 2. One end of the inner side of the two groups of connectors 1 is fixedly connected to a first plug-in tube 11. The surface of the first plug-in tube 11 is provided with a first anti-slip groove 12. The two ends of the protective hose 2 are respectively sleeved on the surface of the first plug-in tube 11 on the left and right sides. The two ends of the protective hose 2 are sleeved with the first fixed Ring 21, one end of the inner side of the first plug-in tube 11 is fixedly connected to the second plug-in tube 13, and a second anti-slip groove 14 is provided on the surface of the second plug-in tube 13. The two ends of the gas hose 22 are respectively sleeved on the surfaces of the second plug-in tube 13 on the left and right sides, and the two ends of the gas hose 22 are sleeved and connected with a second fixed ring 23. The left end of the left connector 1 is connected to the gas head 3, and the gas head 3 is internally provided with a gas valve 31. The right end of the right connector 1 is connected to the inflation head 4, and the inflation head 4 is internally provided with an inflation valve 41.

[0032] Among them, in the process of connecting the protective hose 2 and the gas hose 22, the protective hose 2 is first put on the surface of the gas hose 22, and then the two ends of the gas hose 22 are first put on the surface of the second plug-in tube 13 on the left and right sides, and then the second fixing ring 23 is used to lock and fix the gas hose 22 and the second plug-in tube 13, and then the two ends of the protective hose 2 are put on the surface of the first plug-in tube 11 on the left and right sides, and then the first fixing ring 21 is used to lock and fix the protective hose 2 and the first plug-in tube 11.

[0033] At the same time, the protective hose 2 has a certain elasticity. Under normal use, the protective hose 2 is tightly attached to the surface of the gas hose 22. When the gas hose 22 leaks, the space between the protective hose 2 and the gas hose 22 will be inflated. At this time, the protective hose 2 will expand, and the hydrogen leakage problem can be discovered in time. The two ends of the protective hose 2 are tightly connected to the first plug-in tube 11 through the first fixing ring 21, which effectively improves the sealing performance of the two ends of the protective hose 2, so that the leaked hydrogen will be stored between the protective hose 2 and the gas hose 22, avoiding hydrogen leakage into the air and improving operation safety.

[0034] In addition, the gas supply head 3 is connected to the gas outlet of the hydrogen storage tank, and the charging head 4 is connected to the gas inlet of the hydrogen bottle. The gas supply valve 31 is used to close the gas supply head 3, and the charging valve 41 is used to close the charging head 4, thereby sealing both ends of the two sets of connecting heads 1, thereby preventing residual air inside the gas hose 22 from leaking during the replacement of the gas hose 22, and both the gas supply head 3 and the charging head 4 can be disassembled from the connecting head 1, thereby facilitating the gas supply head 3 and the charging head 4 to be connected to both ends of other gas hoses 22 for reuse, thereby improving resource utilization efficiency.

[0035] See Figure 2 and Figure 3 , the outer ends of the two groups of connecting heads 1 are fixedly connected to the first connecting tube 15, the surface of the first connecting tube 15 is fixedly connected to the first positioning ring 16 near the outer end, the surface of the first connecting tube 15 is sleeved with the second connecting tube 17, the inner end of the second connecting tube 17 is fixedly connected to the second positioning ring 18, the second positioning ring 18, the second positioning ring 18 is slidably connected to the surface of the first connecting tube 15, the gas delivery head 3 and the inflation head 4 are fixedly connected to the fixed tube at one end near the connecting head 1, the surface of the fixed tube is provided with a threaded groove, the outer end of the first connecting tube 15 is inserted into the inner side of the fixed tube, the inner surface of the second connecting tube 17 is provided with a threaded ring, and the second connecting tube 17 is threadedly connected to the surface of the fixed tube.

[0036] Specifically, in the process of fixing the gas delivery head 3 and the inflation head 4, the outer end of the first connecting tube 15 is inserted into the inner side of the fixed tube, and then the second connecting tube 17 is slid outward and threadedly connected to the surface of the fixed tube, and then the gas delivery head 3 and the inflation head 4 are respectively connected to the left and right groups of connecting heads 1.

[0037] The working principle of the present invention is as follows: the protective hose 2 performs protective detection on the surface of the gas hose 22. When hydrogen leaks from the gas hose 22, the hydrogen will be filled between the gas hose 22 and the protective hose 2, causing the inner side of the protective hose 2 to swell, thereby timely and concretely discovering the hydrogen leakage problem, facilitating timely closing of the gas valve 31 and the inflation valve 41 to prevent further leakage of hydrogen, and both ends of the protective hose 2 are in a sealed state with the first plug-in tube 11, and the leaked hydrogen will be stored between the protective hose 2 and the gas hose 22 to prevent hydrogen from diffusing into the air, thereby improving operational production safety.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention.

Claims

1. A hydrogen filling hose with a break protection function, comprising a connector (1), characterized in that: Two groups of connectors (1) are provided, and a protective hose (2) and a gas hose (22) are connected between the two groups of connectors (1). The gas hose (22) is located inside the protective hose (2). The left end of the left connector (1) is connected to a gas supply head (3), and a gas supply valve (31) is provided inside the gas supply head (3). The right end of the right connector (1) is connected to an inflation head (4), and an inflation valve (41) is provided inside the inflation head (4).

2. The hydrogen filling hose with a break protection function according to claim 1, characterized in that: The outer ends of the two groups of connectors (1) are fixedly connected to a first connecting tube (15), and the surface of the first connecting tube (15) close to the outer end is fixedly connected to a first positioning ring (16).

3. The hydrogen filling hose with a break protection function according to claim 2, characterized in that: A second connecting tube (17) is sleeved on the surface of the first connecting tube (15), and a second positioning ring (18) is fixedly connected to one inner end of the second connecting tube (17). The second positioning ring (18) is slidably connected to the surface of the first connecting tube (15).

4. The hydrogen filling hose with a break protection function according to claim 3, characterized in that: The gas delivery head (3) and the inflation head (4) are both fixedly connected to a fixed tube at one end close to the connecting head (1), and a threaded groove is provided on the surface of the fixed tube. The outer end of the first connecting tube (15) is plugged into the inner side of the fixed tube, and a threaded ring is provided on the inner surface of the second connecting tube (17). The second connecting tube (17) is threadedly connected to the surface of the fixed tube.

5. The hydrogen filling hose with a break protection function according to claim 1, characterized in that: One inner end of each of the two groups of connectors (1) is fixedly connected to a first plug-in tube (11), and a first anti-slip groove (12) is provided on the surface of the first plug-in tube (11).

6. The hydrogen filling hose with a break protection function according to claim 5, characterized in that: The two ends of the protective hose (2) are respectively sleeved on the surfaces of the first plug-in tubes (11) on the left and right sides, and the two ends of the protective hose (2) are sleeved with first fixing rings (21).

7. The hydrogen filling hose with a break protection function according to claim 5, characterized in that: One inner end of the first plug-in tube (11) is fixedly connected to a second plug-in tube (13), and a second anti-slip groove (14) is provided on the surface of the second plug-in tube (13).

8. The hydrogen filling hose with a break protection function according to claim 7, characterized in that: The two ends of the gas delivery hose (22) are respectively sleeved on the surfaces of the second plug-in tubes (13) on the left and right sides, and the two ends of the gas delivery hose (22) are sleeved and connected with second fixing rings (23).

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