Hydrogen hose with one-way valve

Abstract

The utility model discloses a hydrogen hose with a one-way valve, which belongs to the technical field of hydrogen hoses, and is characterized in that a plugging component is slidably arranged in a mounting cavity, so that the plugging component can tightly close a first flow channel opening under the action of the plugging component, and when hydrogen enters the mounting cavity from the first flow channel, the first flow channel opening is closed; when hydrogen flows in the mounting cavity, the hydrogen can apply thrust to the plugging assembly to slide in the mounting cavity, so that the hydrogen can normally flow along the tracks of the first flow channel, the mounting cavity and the second flow channel, and the plugging assembly can close the opening of the first flow channel when no hydrogen flows or under the action of reverse pressure. Therefore, reverse flow (namely backflow) of hydrogen is effectively prevented, the effect that the hydrogen only can flow in one direction is achieved, and meanwhile, the situation that external dust or other small particles enter the first flow channel from the second flow channel and then enter filling equipment, and consequently a hydrogen system is polluted can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen hose technical field especially relates to a one-way valve hydrogen hose. BACKGROUND

[0002] With the continuous development of society, various industries have been booming, thus deriving a large number of new energy sources, and hydrogen is one of them. Hydrogen is a colorless and transparent gas that is extremely flammable at room temperature, and its density is the smallest among all gases. It has been widely used in various industries. As a kind of automobile fuel, hydrogen has the advantage of no pollution, and it is very likely to replace oil as the main energy source for automobiles. The setting of hydrogen stations is essential. When the hydrogen filling station is filling, it is connected to the mobile pressure container through a hydrogen filling hose. According to the understanding, the existing hydrogen filling hose includes a hydrogen filling hose main body and two connectors, which are respectively arranged at both ends of the hydrogen filling hose main body. Through the two connectors, the hydrogen filling hose main body is connected to the hydrogen filling station and the air gun.

[0003] Some existing hydrogen hoses, such as application number: CN202320359329.1, application date: 2023-03-01, propose a kind of anti-static high-barrier hydrogen hose, including two connecting connectors and hydrogen hose, two connecting connectors are respectively connected to the two ends of air filling station and air gun, the inner side of two connecting connectors is fixedly connected with buckling piece, the two ends of hydrogen hose are buckled and connected together in two different buckling pieces, the buckling piece is buckled with gas leakage detection device at the connection with hydrogen hose, the lower side of gas leakage detection device is provided with detection module, buzzer alarm is arranged on detection module. When hydrogen leakage occurs at the connection between the buckling piece and the gas leakage detection device, the leakage can be detected by the hydrogen leakage alarm. The hydrogen leakage alarm transmits the hydrogen leakage signal to the alarm module. The signal is transmitted to the detection module through the alarm module. The detection module sends an alarm signal, and then the buzzer alarm buzzes and flashes.

[0004] The above-mentioned hydrogen hose meets the demand of hydrogen transmission to a certain extent. Due to the change of pressure inside the hose, hydrogen backflow phenomenon easily occurs during hydrogen filling. This backflow not only wastes hydrogen resources, but also may cause damage to the filling equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a one-way valve hydrogen hose, which can realize one-way flow of hydrogen, effectively prevent backflow phenomenon, and also prevent external dust from entering the inside of the hose, protecting the hydrogen system from pollution.

[0006] To solve the above technical problems, the utility model adopts one technical scheme of

[0007] A one-way valve hydrogen hose, comprising,

[0008] A hydrogen hose body, a first flow channel is formed on one side of the inlet end of the hydrogen hose body, and a second flow channel is formed on one side of the outlet end of the hydrogen hose body;

[0009] An installation cavity is formed between the first flow channel and the second flow channel;

[0010] A plugging assembly is slidably arranged in the installation cavity and used for plugging the first flow channel.

[0011] According to some embodiments, a Tesla slot structure is formed in the first flow channel and the second flow channel.

[0012] According to some embodiments, the diameter of the installation cavity is greater than the diameter of the first flow channel and the second flow channel.

[0013] According to some embodiments, the plugging assembly comprises:

[0014] A plug is embedded in the first flow channel;

[0015] A first limiting plate is arranged on one side of the plug, first through holes are formed on both sides of the first limiting plate, and one side of the first limiting plate is in contact with one side wall of the installation cavity;

[0016] A guide plate is arranged on one side of the first limiting plate;

[0017] A second limiting plate is arranged on one side of the guide plate, second through holes are formed on both sides of the second limiting plate, one side of the second limiting plate is in contact with another side wall of the installation cavity, and the second limiting plate is located at the second flow channel.

[0018] According to some embodiments, the plug has a trapezoidal structure.

[0019] According to some embodiments, springs are sleeved on the guide plate and the second limiting plate, one end of the spring is connected with the first limiting plate, and the other end of the spring is connected with the side wall of the installation cavity.

[0020] Advantages:

[0021] 1. By setting the plugging assembly in the installation cavity to slide, the plugging assembly can be tightly closed under the action of the plugging assembly, when hydrogen enters the installation cavity from the first flow channel, the hydrogen will give the plugging assembly a sliding force in the installation cavity, so that the hydrogen can flow normally along the trajectory of the first flow channel, the installation cavity and the second flow channel, if there is no hydrogen flow or reverse pressure, the plugging assembly will close the opening of the first flow channel, thereby effectively preventing the reverse flow of hydrogen (i.e. backflow), achieving the effect of one-way flow of hydrogen, and also preventing dust or other small particles from the second flow channel into the first flow channel, and then into the filling equipment, causing the hydrogen system to be contaminated.

[0022] Additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0024] Figure 1 It is a sectional view of the utility model;

[0025] Figure 2 It is Figure 1 The schematic diagram of the plugging assembly shown in the figure.

[0026] In the figure, 1 is a hydrogen hose body, 11 is a first flow channel, 12 is a second flow channel, 13 is an installation cavity, 14 is a Tesla slot structure, 2 is a plugging assembly, 21 is a plug, 22 is a first limiting plate, 23 is a first through hole, 24 is a guide plate, 25 is a second limiting plate, 26 is a second through hole, and 27 is a spring. DETAILED DESCRIPTION

[0027] This part will describe the specific embodiment of the utility model in detail, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0028] In the description of the utility model, it is understood that, when the direction description, such as upper, lower, front, rear, left, right and other directions or positional relationship indicated based on the drawing, is only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, a particular orientation and operation, therefore, it can not be understood as the limitation of the utility model.

[0029] In the description of the utility model, greater than, less than, more than and the like are understood as not including the number, and the above, below, within and the like are understood as including the number.If there is a description to the first, second, it is only used for distinguishing the technical features for the purpose, and can not be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0030] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0031] Combined Figure 1 And Figure 2 As shown in the figure, a one-way valve hydrogen hose includes a hydrogen hose body 1 and a plugging assembly 2.

[0032] The inlet end side of the hydrogen hose body 1 is provided with a first flow channel 11, and the outlet end side of the hydrogen hose body 1 is provided with a second flow channel 12; a mounting cavity 13 is arranged between the first flow channel 11 and the second flow channel 12; the plugging assembly 2 is slidably arranged in the mounting cavity 13 and used for plugging the first flow channel 11.

[0033] Among them, by slidingly arranging the plugging assembly 2 in the mounting cavity 13, under the action of the plugging assembly 2, the plugging assembly 2 can tightly close the opening of the first flow channel 11, when the hydrogen enters the mounting cavity 13 from the first flow channel 11, the hydrogen will give the plugging assembly 2 a sliding force in the mounting cavity 13, so that the hydrogen can normally flow along the track of the first flow channel 11, the mounting cavity 13 and the second flow channel 12, and if there is no hydrogen flow or reverse pressure, the plugging assembly 2 will close the opening of the first flow channel 11, thereby effectively preventing the reverse flow of hydrogen (i.e. backflow, realizing the effect that hydrogen can only flow in one direction, and also can block the dust or other small particles in the outside from entering the first flow channel 11 from the second flow channel 12, and then entering the filling equipment, causing the hydrogen system to be contaminated.

[0034] Combined Figure 1 As shown in the figure, the first flow channel 11 and the second flow channel 12 are both provided with a Tesla slot structure 14.

[0035] Among them, the Tesla Valve Structure is a special fluid passage design that utilizes complex geometry to achieve one-way flow control. Specifically, the Tesla Valve Structure typically contains a series of tortuous channels designed in such a way that forward flow is relatively easy, while reverse flow is greatly hindered.

[0036] When hydrogen gas flows from the first flow channel 11, it passes through the Tesla Valve Structure 14, and due to the geometric design of the channel, hydrogen gas can pass smoothly. The tortuous channels in the Tesla Valve Structure have little effect on forward flow, so hydrogen gas can flow smoothly to the second flow channel 12.

[0037] When hydrogen gas attempts to flow in reverse from the second flow channel 12 to the first flow channel 11, the tortuous channels in the Tesla Valve Structure will greatly resist reverse flow. Hydrogen gas needs to overcome the resistance of multiple tortuous channels when trying to flow in reverse, making it very difficult to complete reverse flow, or even impossible.

[0038] The combination of the Tesla Valve Structure 14 and the blocking assembly 2 forms a double one-way valve function, and the double one-way valve mechanism can ensure that hydrogen gas reverse flow is effectively prevented even in extreme cases, and this combination design improves the overall reliability and safety of the system.

[0039] In some embodiments, in addition to the Tesla Valve Structure, the following also have one-way valve structures:

[0040] Embodiment 1:

[0041] Ball valve structure:

[0042] The ball valve structure is a commonly used one-way valve structure, usually composed of a spherical valve core and a corresponding valve seat.

[0043] Structure:

[0044] Spherical valve core: located in the installation cavity 13, can slide along the installation cavity 13.

[0045] Valve seat: set at the entrance of the first flow channel 11, used in conjunction with the spherical valve core.

[0046] Working principle:

[0047] Forward flow:

[0048] When hydrogen gas flows from the first flow channel 11, it pushes the spherical valve core to move towards the inside of the installation cavity 13, causing the spherical valve core to disengage from the valve seat, and hydrogen gas can pass through the first flow channel 11 and the installation cavity 13 into the second flow channel 12.

[0049] Reverse flow:

[0050] When hydrogen attempts to flow in reverse from the second flow channel 12 to the first flow channel 11, the reverse pressure causes the ball valve core to press tightly against the valve seat, preventing reverse flow of hydrogen.

[0051] Example 2:

[0052] Flap valve structure:

[0053] The flap valve structure is typically composed of one or more flaps that can swing with the fluid direction.

[0054] Structure:

[0055] Flap: Located inside the mounting cavity 13, it can swing along the mounting cavity 13.

[0056] Fixed support: Used to support the flap and limit its swing range.

[0057] Working principle:

[0058] Forward flow:

[0059] When hydrogen flows in from the first flow channel 11, the hydrogen pushes the flap to swing inside the mounting cavity 13, causing the flap to open, and hydrogen can pass through the first flow channel 11 and the mounting cavity 13 into the second flow channel 12.

[0060] Reverse flow:

[0061] When hydrogen attempts to flow in reverse from the second flow channel 12 to the first flow channel 11, the reverse pressure causes the flap to close, preventing reverse flow of hydrogen.

[0062] Example 3:

[0063] Spring-loaded valve structure:

[0064] The spring-loaded valve structure is typically composed of a spring and a valve core, with the spring's role being to keep the valve core closed when there is no fluid flow.

[0065] Structure:

[0066] Valve core: Located inside the mounting cavity 13, it can slide along the mounting cavity 13.

[0067] Spring: Located on one side of the valve core and the mounting cavity 13, it provides a spring force to keep the valve core closed.

[0068] Working principle:

[0069] Forward flow:

[0070] When hydrogen flows in from the first flow channel 11, the hydrogen pushes the valve core to move inside the mounting cavity 13, overcoming the spring force, causing the valve core to open, and hydrogen can pass through the first flow channel 11 and the mounting cavity 13 into the second flow channel 12.

[0071] Reverse flow:

[0072] When hydrogen attempts to flow reversely from the second flow channel 12 to the first flow channel 11, the reverse pressure makes the valve core tightly press against the inner side wall of the installation cavity 13, and the action of the spring makes the valve core quickly close, preventing the reverse flow of hydrogen.

[0073] Example 4:

[0074] Butterfly valve structure:

[0075] The butterfly valve structure is usually composed of a rotating butterfly plate, which can be rotated to open or close the flow channel.

[0076] Structure:

[0077] Butterfly plate: located in the installation cavity 13, can rotate around the shaft.

[0078] Rotary shaft: used to support and rotate the butterfly plate.

[0079] Working principle:

[0080] Forward flow:

[0081] When hydrogen flows from the first flow channel 11, hydrogen pushes the butterfly plate to rotate, making the butterfly plate open, and hydrogen can pass through the first flow channel 11 and the installation cavity 13 into the second flow channel 12.

[0082] Reverse flow:

[0083] When hydrogen attempts to flow reversely from the second flow channel 12 to the first flow channel 11, the reverse pressure makes the butterfly plate rotate to close, preventing the reverse flow of hydrogen.

[0084] Example 5:

[0085] Diaphragm valve structure:

[0086] The diaphragm valve structure is usually composed of an elastic diaphragm, which can be deformed with fluid pressure to control the opening and closing of the flow channel.

[0087] Structure:

[0088] Elastic diaphragm: located in the installation cavity 13, can be deformed with fluid pressure.

[0089] Fixed ring: used to fix the diaphragm and limit its deformation range.

[0090] Working principle:

[0091] Forward flow:

[0092] When hydrogen flows from the first flow channel 11, hydrogen pushes the diaphragm to deform towards the inside of the installation cavity 13, making the diaphragm open, and hydrogen can pass through the first flow channel 11 and the installation cavity 13 into the second flow channel 12.

[0093] Reverse flow:

[0094] When the hydrogen tries to flow back from the second flow channel 12 to the first flow channel 11 , the reverse pressure causes the diaphragm to cling tightly to the fixing ring, preventing the hydrogen from flowing back.

[0095] To further illustrate, the diameter of the mounting cavity 13 is larger than the diameters of the first flow channel 11 and the second flow channel 12. The larger diameter of the mounting cavity 13 provides sufficient space for the plugging assembly 2 to slide freely within the mounting cavity 13. This ensures that the plugging assembly 2 can move smoothly when hydrogen is flowing and can quickly close the first flow channel 11 when there is no hydrogen flow or reverse pressure.

[0096] Combine Figure 2 As shown, the plugging assembly 2 includes: a plug 21, a first limiting plate 22, a guide plate 24, and a second limiting plate 25. The plug 21 is embedded in the first flow channel 11; the first limiting plate 22 is provided on one side of the plug 21, and first through holes 23 are respectively defined on both sides of the first limiting plate 22. One side of the first limiting plate 22 contacts a side wall of the mounting cavity 13; the guide plate 24 is provided on one side of the first limiting plate 22; the second limiting plate 25 is provided on one side of the guide plate 24, and second through holes 26 are respectively defined on both sides of the second limiting plate 25. One side of the second limiting plate 25 contacts the other side wall of the mounting cavity 13, and the second limiting plate 25 is located at the second flow channel 12.

[0097] Among them, when hydrogen flows forward from the first flow channel 11 to the second flow channel 12, when hydrogen enters the installation cavity 13 from the first flow channel 11, the hydrogen will apply thrust to the plug 21, and the plug 21 moves toward the inside of the installation cavity 13 under the action of the thrust. The guide plate 24 and the first limit plate 22 provide guidance and support to ensure that the plug 21 moves smoothly until the second limit plate 25 abuts against the inner wall of the installation cavity 13 to limit the movement range of the plug 21. Since the first limit plate 22 and the second limit plate 25 are respectively provided with a first through hole 23 and a second through hole 26, hydrogen is allowed to pass through in the forward flow under the action of the first through hole 23 and the second through hole 26, thereby reducing resistance.

[0098] When hydrogen attempts to flow back from the second flow channel 12 to the first flow channel 11, the hydrogen will exert a reverse thrust on the plug 21. Under the action of the reverse thrust, the plug 21 will quickly return to the position of the first flow channel 11, blocking the first flow channel 11 until one side of the first limit plate 22 abuts against the inner wall of the installation cavity 13, thereby limiting the movement range of the plug 21.

[0099] To further explain, the plug 21 has a trapezoidal structure. The trapezoidal structure enables the plug 21 to fit tightly against the inner wall of the flow channel when entering the first flow channel 11, thereby improving the sealing effect. In the absence of hydrogen flow or reverse pressure, the plug 21 can better block the first flow channel 11. The trapezoidal structure will produce a certain self-locking effect when the plug 21 enters the first flow channel 11. As the plug 21 enters the flow channel, the trapezoidal structure will gradually expand to form a better sealing effect. Under the action of reverse pressure, the trapezoidal structure can better lock in the first flow channel 11 to prevent hydrogen backflow.

[0100] Combine Figure 2 As shown, a spring 27 is sleeved on the guide plate 24 and the second limiting plate 25 . One end of the spring 27 is connected to the first limiting plate 22 , and the other end is connected to the side wall of the installation cavity 13 .

[0101] Among them, the design of the spring 27 enables the sealing component 2 to quickly reset in the absence of hydrogen flow or reverse pressure, closing the first flow channel 11. The elastic force provided by the spring 27 ensures that the plug 21 can quickly return to its initial position, thereby preventing hydrogen backflow. The spring 27 maintains a certain pre-tightening force under normal conditions to ensure that the plug 21 is always in a tightly sealed state. The pre-tightening force enables the plug 21 to always maintain good contact with the first flow channel 11, thereby improving the sealing effect.

[0102] The working mode of the utility model is as follows:

[0103] Hydrogen forward flow:

[0104] When hydrogen flows in from the first flow channel (11), the hydrogen passes through the Tesla slot structure (14). Due to the geometric design of the slot, the hydrogen can pass smoothly. After the hydrogen enters the installation cavity (13), it will exert a thrust on the plug (21), pushing the plug (21) to move into the installation cavity (13). The guide plate (24) and the first limiting plate (22) provide guidance and support to ensure that the plug (21) moves smoothly, and the spring 27 gradually becomes compressed. The plug (21) moves until the second limiting plate (25) abuts against the inner wall of the installation cavity (13), limiting the movement range of the plug (21). The first through hole (23) and the second through hole (26) allow hydrogen to pass through during forward flow, reducing resistance. The hydrogen continues to flow along the installation cavity (13) and the second flow channel (12), and finally flows out of the second flow channel (12). At the same time, the Tesla slot structure (14) has little effect on the hydrogen during the forward flow process, and the hydrogen can pass smoothly.

[0105] Hydrogen reverse flow:

[0106] When hydrogen attempts to flow reversely from the second flow channel (12) to the first flow channel (11), the hydrogen will exert a reverse thrust on the plug (21), under the action of the reverse thrust, the plug (21) quickly returns to the position of the first flow channel (11), blocks the first flow channel (11), and the plug (21) returns to abut against the inner side wall of the mounting cavity (13) of the first limiting plate (22), thereby limiting the movement range of the plug (21), the spring (27) is designed to enable the blocking assembly (2) to quickly reset without hydrogen flow or reverse pressure, close the first flow channel (11), the trapezoidal structure of the plug (21) can tightly fit the inner wall of the flow channel when entering the first flow channel (11), thereby improving the sealing effect, and meanwhile, the Tesla slot structure (14) generates great resistance to hydrogen during reverse flow, and the hydrogen needs to overcome the resistance of multiple tortuous channels when attempting to flow reversely, so that the flow becomes very difficult, and even cannot complete the reverse flow.

[0107] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A one-way valve hydrogen hose, characterized in that: include: A hydrogen hose body (1), wherein a first flow channel (11) is provided on one side of an inlet end of the hydrogen hose body (1), and a second flow channel (12) is provided on one side of an outlet end of the hydrogen hose body (1); A mounting cavity (13) is provided between the first flow channel (11) and the second flow channel (12); A blocking component (2) is slidably disposed in the installation cavity (13) and is used to block the first flow channel (11).

2. The one-way valve hydrogen hose according to claim 1, characterized in that: Tesla groove structures (14) are provided in both the first flow channel (11) and the second flow channel (12).

3. A one-way valve hydrogen hose according to claim 1 or 2, characterized in that: The diameter of the installation cavity (13) is larger than the diameters of the first flow channel (11) and the second flow channel (12).

4. The one-way valve hydrogen hose according to claim 1, characterized in that: The blocking component (2) comprises: A plug (21) is embedded in the first flow channel (11); a first limiting plate (22) provided on one side of the plug (21), first through holes (23) being respectively provided on both sides of the first limiting plate (22), and one side of the first limiting plate (22) being in contact with a side wall of the installation cavity (13); A guide plate (24) is provided on one side of the first limiting plate (22); A second limiting plate (25) is provided on one side of the guide plate (24), and second through holes (26) are respectively provided on both sides of the second limiting plate (25). One side of the second limiting plate (25) contacts the other side wall of the mounting cavity (13), and the second limiting plate (25) is located at the second flow channel (12).

5. The one-way valve hydrogen hose according to claim 4, characterized in that: The plug (21) has a trapezoidal structure.

6. The one-way valve hydrogen hose according to claim 4, characterized in that: A spring (27) is sleeved on the guide plate (24) and the second limiting plate (25), one end of the spring (27) is connected to the first limiting plate (22), and the other end is connected to the side wall of the installation cavity (13).

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