Hydrogen filling pile

Abstract

The utility model provides a hydrogen filling pile, which relates to the technical field of hydrogen energy application, and comprises a first gas path system, a second gas path system and a structural frame, the first gas path system and the second gas path system are respectively mounted on the structural frame, and are respectively provided with mutually independent filling control valves; the first gas path system and the second gas path system are in fluid communication through a standby gas path, and the standby gas path is provided with a gas path switching valve. The first gas path system and the second gas path system can operate independently, and when one of the first gas path system and the second gas path system breaks down, the other gas path system supplies hydrogen to achieve continuous filling, so that the hydrogen filling reliability and filling efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy application, in particular to a hydrogen filling pile. Background Art

[0002] In the current electric vehicle charging infrastructure, as one of the key devices, the hydrogen filling pile undertakes the task of providing efficient and safe hydrogen replenishment for hydrogen fuel cell vehicles. With the rapid development of the hydrogen energy vehicle industry, the demand for hydrogen filling piles is increasing day by day, and the design and performance optimization thereof have become the focus of the industry. However, in the existing hydrogen filling pile system, there are some key technical problems and potential risks, and the reliability problem of the hydrogen filling pipeline is particularly prominent.

[0003] During the operation of the hydrogen filling pile, various faults may occur, including but not limited to pipeline leakage, valve failure, control system failure, etc. These faults not only affect the continuity of hydrogen supply, but may also cause the interruption or out-of-control of the filling process in severe cases, thereby having a negative impact on the safety and hydrogen filling efficiency of hydrogen fuel cell vehicles. Generally, the hydrogen filling pile is configured with a single gas path system. If a gas path fault occurs, it will lead to abnormal hydrogen filling. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hydrogen filling pile to alleviate the technical problem of poor reliability of the hydrogen filling pile in the prior art.

[0005] In a first aspect, the hydrogen filling pile provided by the utility model includes a first gas path system, a second gas path system and a structural framework;

[0006] The first gas path system and the second gas path system are respectively installed on the structural framework, and the first gas path system and the second gas path system are respectively provided with independent filling control valves;

[0007] The first gas path system and the second gas path system are in fluid communication through a standby gas path, and a gas path switching valve is installed on the standby gas path.

[0008] Combined with the first aspect, the utility model provides a first possible implementation manner of the first aspect, wherein the hydrogen filling pile further includes an explosion-proof monitoring system, the explosion-proof monitoring system is located between the first gas path system and the second gas path system, and the first gas path system and the second gas path system are respectively in fluid communication with the explosion-proof monitoring system.

[0009] Combined with the first possible implementation manner of the first aspect, the utility model provides a second possible implementation manner of the first aspect, wherein the structural framework is provided with an openable and closable maintenance door, and the maintenance door is used to shield the first gas path system, the second gas path system and the explosion-proof monitoring system.

[0010] In combination with the first aspect, the present utility model provides a third possible implementation manner of the first aspect, wherein the first gas circuit system and the second gas circuit system respectively include: a hydrogen input pipeline, a filling pipeline, and an infusion device connected between the hydrogen input pipeline and the filling pipeline.

[0011] In combination with the third possible implementation manner of the first aspect, the present utility model provides a fourth possible implementation manner of the first aspect, wherein one of the two filling pipelines is led out from one side of the structural frame, and the other is led out from the opposite side of the structural frame.

[0012] In combination with the third possible implementation manner of the first aspect, the present utility model provides a fifth possible implementation manner of the first aspect, wherein the first gas circuit system and the second gas circuit system are both connected to a relief circuit and a purge circuit;

[0013] A gas circuit panel is connected to the bottom of the back side of the structural frame, and the hydrogen input pipeline, the relief circuit, and the purge circuit are all led out from the gas circuit panel.

[0014] In combination with the fifth possible implementation manner of the first aspect, the present utility model provides a sixth possible implementation manner of the first aspect, wherein the hydrogen filling pile further includes a pressure guiding control system, and the pressure guiding control system includes: a pressure regulating filter, a detection instrument, and an instrument air access pipeline communicating with the detection instrument;

[0015] The pressure regulating filter is arranged adjacent to the front of the structural frame, and the instrument air access pipeline is led out through the gas circuit panel.

[0016] In combination with the fifth possible implementation manner of the first aspect, the present utility model provides a seventh possible implementation manner of the first aspect, wherein the relief circuit is configured with a safety valve, and the safety valve is used to control the on-off state of the first gas circuit system and the second gas circuit system relative to the hydrogen source.

[0017] In combination with the fifth possible implementation manner of the first aspect, the present utility model provides an eighth possible implementation manner of the first aspect, wherein the purge circuit is in fluid communication with the filling pipeline, and the purge circuit is used to introduce an inert gas into the filling pipeline to exhaust hydrogen.

[0018] In combination with the first aspect, the present utility model provides a ninth possible implementation manner of the first aspect, wherein the first gas circuit system and the second gas circuit system are respectively configured with flow meters.

[0019] The embodiments of the present utility model bring the following beneficial effects: The first gas circuit system and the second gas circuit system are respectively installed on the structural frame, and the first gas circuit system and the second gas circuit system are respectively provided with independent filling control valves. The first gas circuit system and the second gas circuit system are fluidly connected through a standby gas circuit, and a gas circuit switching valve is installed on the standby gas circuit. The first gas circuit system and the second gas circuit system can operate independently, and when one of them fails, the other can supply hydrogen to continue the filling, improving the reliability and filling efficiency of hydrogen filling.

[0020] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 The front view of the hydrogen filling pile provided by the embodiment of the present utility model;

[0023] Figure 2 The schematic diagram of the hydrogen filling pile provided by the embodiment of the present utility model Figure 1 ;

[0024] Figure 3 The schematic diagram of the hydrogen filling pile provided by the embodiment of the present utility model Figure 2 .

[0025] Reference numerals: 100 - First gas circuit system; 101 - Hydrogen input pipeline; 102 - Filling pipeline; 200 - Second gas circuit system; 300 - Structural frame; 310 - Maintenance door; 400 - Explosion-proof monitoring system; 500 - Discharge circuit; 600 - Purge circuit; 700 - Gas circuit panel; 800 - Instrument air access pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is 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, 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, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used to describe name differences and should not be construed as indicating or implying relative importance. For the physical quantities in the formula, if not separately marked, they should be understood as the basic quantities of the basic units of the International System of Units, or the derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] As Figure 1 , Figure 2 and Figure 3 shown, the hydrogen filling pile provided by the embodiment of the present utility model includes: a first gas path system 100, a second gas path system 200, and a structural frame 300; the first gas path system 100 and the second gas path system 200 are respectively installed on the structural frame 300, and the first gas path system 100 and the second gas path system 200 are respectively provided with independent filling control valves; the first gas path system 100 and the second gas path system 200 are fluidly connected through a standby gas path, and a gas path switching valve is installed on the standby gas path.

[0030] Among them, the filling control valve may include manual valves respectively installed on the first gas path system 100 and the second gas path system 200. Moreover, the first gas path system 100 and the second gas path system 200 may respectively install manual valves on the intake side and the filling side, so as to realize the independent control of the two gas paths and the on-off control of the intake and exhaust of a single gas path, improving the control flexibility and being more convenient for maintenance and repair. When only one gas path is used for filling, one of the first gas path system 100 and the second gas path system 200 can be selected for hydrogen filling, and the other is used as a standby; when one of the first gas path system 100 and the second gas path system 200 fails, the hydrogen of the other gas path system can be introduced through the connection function of the standby gas path, so as to ensure that the hydrogen filling can continue, improving the reliability of the hydrogen filling pile.

[0031] In the embodiment of the present utility model, the hydrogen filling pile further includes an explosion-proof monitoring system 400. The explosion-proof monitoring system 400 is located between the first gas path system 100 and the second gas path system 200, and the first gas path system 100 and the second gas path system 200 are respectively in fluid communication with the explosion-proof monitoring system 400.

[0032] In this embodiment, the explosion-proof monitoring system 400 is located in the central area inside the structural frame 300. Thus, the pipelines connecting the first gas path system 100 and the second gas path system 200 to the structural frame 300 are easier to layout. In addition, the location of the explosion-proof monitoring system 400 is easy to repair and maintain, and the connection of the explosion-proof flexible pipes around it is also easy to implement.

[0033] It should be noted that the explosion-proof monitoring system 400 can integrate various devices such as hydrogen leakage sensors, temperature sensors, and pressure sensors, and the controller controls the working state of the hydrogen filling pile according to the signals of various sensors, thereby improving the operation safety of the equipment.

[0034] In this embodiment, the structural frame 300 is provided with an openable and closable inspection door 310. The inspection door 310 is used to shield the first gas path system 100, the second gas path system 200, and the explosion-proof monitoring system 400. Among them, the four sides of the structural frame 300 are enclosed by sheet metal devices, and door openings are respectively provided at the front and back, and the inspection door 310 is installed. The internal devices can be maintained and repaired in the state of opening the inspection door 310.

[0035] The first gas path system 100 and the second gas path system 200 respectively include: a hydrogen input pipeline 101, a filling pipeline 102, and an infusion device connected between the hydrogen input pipeline 101 and the filling pipeline 102. Among them, the infusion device can include a flow control valve, a pressure regulating valve, a pressure pump, etc., to ensure that the hydrogen supplied from the hydrogen input pipeline 101 is filled through the filling pipeline 102 at a relatively stable flow rate.

[0036] In a preferred embodiment, one of the two filling pipelines 102 is led out from one side of the structural frame 300, and the other is led out from the opposite side of the structural frame 300. The two filling pipelines 102 can be non-interfering and can also fill hydrogen for two hydrogen-filled devices at the same time, thereby improving the hydrogen filling efficiency.

[0037] In a preferred embodiment, as Figure 2 and Figure 3 shown, both the first gas path system 100 and the second gas path system 200 are connected to a discharge circuit 500 and a purge circuit 600; the back side bottom of the structural frame 300 is connected with a gas path panel 700, and the hydrogen input pipeline 101, the discharge circuit 500, and the purge circuit 600 are all led out from the gas path panel 700, thereby realizing the centralization of the pipeline interface positions, being easier to layout, and having a neater appearance.

[0038] In addition, the hydrogen filling pile further includes a pressure guiding control system, which includes a pressure regulating filter, a detection instrument, and an instrument air access pipeline 800 connecting the detection instrument; the pressure regulating filter is arranged adjacent to the front of the structural frame 300, and the instrument air access pipeline 800 is led out through the air path panel 700.

[0039] In a preferred embodiment, the relief circuit 500 is configured with a safety valve, which is used to control the on-off state of the first gas path system 100 and the second gas path system 200 relative to the hydrogen source. When the filling air pressure exceeds the limit value, hydrogen can be discharged to the hydrogen source, so as to ensure that the internal air pressure of the first gas path system 100 and the second gas path system 200 is in a safe state.

[0040] Furthermore, the purge circuit 600 is in fluid communication with the filling pipeline 102, and the purge circuit 600 is used to introduce an inert gas into the filling pipeline 102 to exhaust hydrogen, which can avoid the leakage of hydrogen and improve the safety of hydrogen filling.

[0041] Furthermore, the first gas path system 100 and the second gas path system 200 are respectively configured with flow meters, which can respectively monitor the hydrogen filling amounts of the first gas path system 100 and the second gas path system 200, so that users can accurately know the hydrogen filling flow rate.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen filling pile, characterized in that: include: A first gas path system (100), a second gas path system (200) and a structural frame (300); The first gas circuit system (100) and the second gas circuit system (200) are respectively installed on the structural frame (300), and the first gas circuit system (100) and the second gas circuit system (200) are respectively provided with independent filling control valves; The first gas circuit system (100) is fluidly connected to the second gas circuit system (200) via a backup gas circuit, and a gas circuit switching valve is installed on the backup gas circuit.

2. The hydrogen filling pile according to claim 1, characterized in that: The hydrogen filling pile further comprises an explosion-proof monitoring system (400), wherein the explosion-proof monitoring system (400) is located between the first gas circuit system (100) and the second gas circuit system (200), and the first gas circuit system (100) and the second gas circuit system (200) are respectively in fluid communication with the explosion-proof monitoring system (400).

3. The hydrogen filling pile according to claim 2, characterized in that: The structural frame (300) is provided with an openable and closable inspection door (310), and the inspection door (310) is used to shield the first gas circuit system (100), the second gas circuit system (200) and the explosion-proof monitoring system (400).

4. The hydrogen filling pile according to claim 1, characterized in that: The first gas circuit system (100) and the second gas circuit system (200) respectively comprise: a hydrogen input pipeline (101), a filling pipeline (102), and an infusion device connected between the hydrogen input pipeline (101) and the filling pipeline (102).

5. The hydrogen filling pile according to claim 4, characterized in that: One of the two filling pipelines (102) is led out from one side of the structural frame (300), and the other is led out from the opposite side of the structural frame (300).

6. The hydrogen filling pile according to claim 4, characterized in that: The first gas circuit system (100) and the second gas circuit system (200) are both connected to a discharge circuit (500) and a purge circuit (600); The back bottom of the structural frame (300) is connected to a gas circuit panel (700), and the hydrogen input pipeline (101), the discharge circuit (500) and the purge circuit (600) are all led out from the gas circuit panel (700).

7. The hydrogen filling pile according to claim 6, characterized in that: The hydrogen filling pile also includes a pressure control system, which includes: a pressure regulating filter, a detection instrument, and an instrument gas access pipeline (800) connected to the detection instrument; The pressure regulating filter is arranged adjacent to the front side of the structural frame (300), and the instrument gas access pipeline (800) is led out through the gas circuit panel (700).

8. The hydrogen filling pile according to claim 6, characterized in that: The discharge circuit (500) is provided with a safety valve, and the safety valve is used to control the on / off state of the first gas circuit system (100) and the second gas circuit system (200) relative to the hydrogen source.

9. The hydrogen filling pile according to claim 6, characterized in that: The purge circuit (600) is in fluid communication with the filling pipeline (102), and the purge circuit (600) is used to introduce an inert gas into the filling pipeline (102) to exhaust the hydrogen.

10. The hydrogen filling pile according to claim 1, characterized in that: The first gas circuit system (100) and the second gas circuit system (200) are respectively configured with flow meters.

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