Novel hydrogen energy air and fuel manifold assembly

Abstract

The utility model provides a novel hydrogen energy air and fuel manifold assembly, and belongs to the technical field of hydrogen energy. Comprising a manifold assembly and two connecting pipe sets, the manifold assembly comprises two air and fuel manifolds, the air and fuel manifolds are arranged in a grouping mode, each air and fuel manifold comprises an air manifold, a hydrogen manifold and a plurality of rib plates, and each air manifold comprises an air inlet flange, an air main pipe, an air outlet flange and an air branch pipe; the hydrogen manifold comprises a hydrogen inlet flange, a hydrogen main pipe and a hydrogen branch pipe; the air outlet flange of the air manifold and the air outlet flange of the hydrogen manifold are one air outlet flange and are communicated and connected with the air main pipe and the hydrogen main pipe through the air branch pipe and the hydrogen branch pipe; the air main pipe and the hydrogen main pipe are fixedly connected through the rib plate; and the connecting pipe group comprises a hydrogen inlet connecting pipe and an air inlet connecting pipe. Air inlets of the air manifolds are connected through air inlet connecting pipes in the connecting pipe set, and air inlets of the hydrogen manifolds are connected through hydrogen inlet connecting pipes in the connecting pipe set. The air and fuel manifold forming process is obtained in a casting mode, the inner wall of the manifold is smooth, gas entering is facilitated, therefore, air and hydrogen entering the manifold are not hindered and fully mixed, the gas achieves the optimal mixing effect, the hydrogen can be stably converted, and the conversion efficiency of products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen energy technology field, concretely relates to hydrogen energy air and fuel manifold assembly of hydrogen energy fuel cell. BACKGROUND

[0002] At present, fuel cell automobile develops rapidly at home and abroad, drives hydrogen energy fuel cell rapid development, but as one of hydrogen energy fuel cell core components, hydrogen energy air and fuel manifold assembly due to its own characteristics (under 600 DEG C-700 DEG C heat shock, withstands 40000h impact work of mixed corrosion gas 1bar pressure difference, product inner wall surface does not occur oxidation drop; thermal expansion coefficient is less than 12E-6; product external surface is in the CI ion acid environment of PH value 4.0-5.0 40000h does not appear rust phenomenon etc.), its design and manufacture basically adopt I625 profiles, welding forming, and I625 material rare element and noble metal content is more, and the proportion is big, and the price is expensive, simultaneously, due to the special-shaped, thin-walled, complex characteristics of product, its welding forming is difficult, and it is difficult to guarantee the smoothness of product gas channel each import and export airflow and pressure difference balance, temperature field balance etc. Key indicators, and then influence the use performance of product, limited by product manufacturing process (punching, forming, welding, machining etc.), product consistency is poor, and the use performance is unstable, and then influence the performance of hydrogen energy fuel cell. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problems in the above background art, the present application provides a new type of hydrogen energy air and fuel manifold assembly, which is easy to form, improves the forming quality of the product, and ensures the consistency of the product. The above-mentioned key indicators of the product are overcome, the hydrogen energy is stably converted, and the conversion efficiency and use performance of the product are improved. The manufacturing cost of the product is effectively reduced (less than half of the manufacturing cost of I625 material under the same product), and the performance is effectively improved.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of:

[0005] A new type of hydrogen energy air and fuel manifold assembly, comprising two groups of manifold assemblies and two groups of connecting pipe groups, the manifold assembly comprises two groups of air and fuel manifolds, the air and fuel manifolds are arranged in groups, the two groups of air and fuel manifolds comprise an air manifold, a hydrogen gas manifold and a plurality of rib plates, the air manifold comprises an air inlet flange, an air main pipe, an outlet flange and an air branch pipe, the hydrogen gas manifold comprises a hydrogen gas inlet flange, a hydrogen gas main pipe and a hydrogen gas branch pipe, the outlet flange of the air manifold and the outlet flange of the hydrogen gas manifold are one outlet flange, and the air branch pipe and the hydrogen gas branch pipe are connected with the air main pipe and the hydrogen gas main pipe.

[0006] The air main pipe and the hydrogen main pipe are fixedly connected through the rib plate; the connecting pipe group comprises a hydrogen gas inlet connecting pipe and an air inlet connecting pipe.

[0007] Further, the air manifold section comprises an air main pipe section, an air inlet section and an air branch pipe section; the hydrogen gas manifold section comprises a hydrogen main pipe section, a hydrogen gas inlet section and a hydrogen gas branch pipe section.

[0008] The air main pipe section area is 54mm, the air inlet section is 35mm, the air branch pipe section is 15mm, the hydrogen main pipe section area is 70mm, the hydrogen gas inlet section is 59mm and the hydrogen gas branch pipe section is 32mm.

[0009] Further, the hydrogen gas manifold is provided with a hydrogen gas inlet flange, and the air manifold is provided with an air outlet flange, the air outlet flange is provided with a hydrogen gas outlet and an air outlet, the air outlet is located between the two hydrogen gas outlets, the hydrogen gas inlet flange, the air inlet flange and the air outlet flange are provided with threaded holes at the end of the flange periphery, and the air manifold and the hydrogen gas manifold are fixedly and uniformly distributed through the rib plate.

[0010] Further, the branch pipe is provided with a mounting hole for a monitoring sensor.

[0011] Further, the hydrogen gas inlet flange, the air inlet flange and the air outlet flange are all provided with a cutting groove for mounting a sealing gasket.

[0012] Further, the air manifold and the hydrogen gas manifold are provided with process holes for positioning a core.

[0013] Further, one side of the air manifold is provided with an ear for assisting installation and support, the ear is in the same height as the air outlet flange, and one side of the hydrogen gas manifold is provided with a plurality of external mounting ears, and the mounting ears are in the same height as a plane for supporting an external connecting piece.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. The project product is obtained in the form of casting, and complex structure forming products can be obtained, which breaks through the welding forming difficulties of the original I625 material welding forming due to the special shape, thin wall and complex characteristics of the product, the incoordination of the product air channel, the gas flow of each inlet and outlet, the uneven pressure difference and the uneven temperature field, and further improves the use performance of the fuel cell; at the same time, the manufacturing cost of the product is effectively reduced (under the same product, the manufacturing cost is less than 1 / 2 of the I625 material).

[0016] 2. The fuel manifold of the novel hydrogen energy air and fuel manifold assembly is characterized in that the fuel manifold adopts double flow channels, the cross-sectional area and the air inlet flow direction, multiple branch pipes are designed between the manifolds and connected to the air outlet flange, and meanwhile, the through parts of the manifolds adopt smooth transition design (welding without gaps), which can ensure that the smoothness of the flow channels, the inlet and outlet air flow of the manifold, the pressure difference balance, the temperature field balance and other key indicators are improved, so that the gas entering the manifold is mixed, the mixed gas is mixed to the best mixing effect, meanwhile, the grouping and air entering design of the assembly make the air inlet uniform, reduce the buffer, effectively improve the conversion efficiency and the use performance of the fuel cell.

[0017] 3. The through connection of the rib plate, the branch pipe and the air outlet flange between the two manifolds of the fuel manifold makes the fuel manifold integrated, compact in structure, effectively improves the rigidity of the product and reduces the weight of the product, and meets the requirements of lightweight design. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in detail in combination with the drawings.

[0019] Figure 1 The assembly structure schematic view of the embodiment 1 of the utility model;

[0020] Figure 2 The air and fuel manifold structure schematic view of the embodiment 1 of the utility model;

[0021] Figure 3 The main pipe cross section structure schematic view of the embodiment 1 of the utility model;

[0022] Figure 4 The air inlet cross section structure schematic view of the embodiment 1 of the utility model;

[0023] Figure 5 The branch pipe cross section structure schematic view of the embodiment 1 of the utility model;

[0024] Figure 6 The air and fuel manifold side schematic view of the embodiment 1 of the utility model;

[0025] Figure 7 The main view of the air and fuel manifold of the embodiment 1 of the utility model.

[0026] Wherein, 1-air manifold, 2-hydrogen manifold, 3-hydrogen branch pipe, 4-mounting hole, 7 hydrogen gas inlet flange, 8-air inlet flange, 9-outlet flange, 10-threaded hole, 11-hydrogen outlet, 12-air outlet, 13-groove, 14-rib, 16-mounting lug, 17-flat, 18-support lug, 19-air inlet connecting pipe, 20-air and fuel manifold, 21-hydrogen inlet connecting pipe, 22-process hole, 24-connecting pipe group, 30-air main pipe, 31-air branch pipe, 33-air main pipe section, 34-air inlet section, 35-air branch pipe section, 40-hydrogen main pipe, 41-hydrogen main pipe section, 44-hydrogen inlet section, 45-hydrogen branch pipe section, 50-manifold overall. DETAILED DESCRIPTION

[0027] In order to better understand the present application, the content of the present application will be further clearly described below in conjunction with examples, but the protection content of the present application is not limited to the following examples only. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details.

[0028] Example 1: refer to Figures 1-7 The novel hydrogen energy air and fuel manifold assembly of the present embodiment comprises a manifold overall 50 and two groups of connecting pipe groups 24, the manifold overall 50 comprises two groups of air and fuel manifolds 20 (left and right), the air and fuel manifold 20 comprises an air manifold 1 and a hydrogen manifold 2 and a plurality of ribs 14, the bottom of the air manifold 1 and the end of the hydrogen manifold 2 are fixedly connected through hydrogen branch pipes 3 and air branch pipes 31, the hydrogen branch pipes 3 are six, the air branch pipes 31 are three, which are divided into three groups, two hydrogen branch pipes 3 are arranged on both sides of the air branch pipes 31, the hydrogen branch pipes 3 are provided with mounting holes 4 for monitoring sensors, the through parts of each branch pipe are welded without gaps, and smooth transitions are adopted, one end of the air manifold 1 is fixedly connected with an air inlet flange 8 and an outlet flange 9, the air manifolds 1 are connected through air inlet connecting pipes 19, the outlet of the outlet flange 9 is nine, among each group of outlets, the air outlet 12 is located in the middle of the two hydrogen outlets 11, one end of the hydrogen manifold 2 is fixedly connected with a hydrogen inlet flange 7, the hydrogen manifolds 2 are connected through hydrogen inlet connecting pipes 21, the air inlet flange 8 and the hydrogen inlet flange 7 are provided with sealing ring grooves 15, the sealing ring grooves 15 are used for mounting sealing rings, the branch pipes 3 are provided with mounting holes 4 for installing monitoring sensors, which can prevent the gas entering the manifold from overflowing and can sense whether the gas overflows, and can fully mix the gas after entering the manifold, so that the mixed gas can achieve the best mixing effect.

[0029] Refer toFigures 1-7 , the air manifold (1) cross section includes air main pipe cross section 33, air intake cross section 34 and air branch pipe cross section 35; the hydrogen manifold 2 cross section includes hydrogen main pipe cross section 41, hydrogen intake cross section 44 and hydrogen branch pipe cross section 45; the air main pipe cross section 33 area is ￠54mm, the air intake cross section 34 is ￠35mm, the air branch pipe cross section 35 is ￠15mm; the hydrogen main pipe cross section 41 area is ￠70mm; the hydrogen intake cross section 44 is ￠59mm, the hydrogen branch pipe 45 cross section is ￠32mm. Thus, the gas intake cross section area and the gas flow direction are different, and then the hydrogen can be stably converted, the product forming stability is more stable, and the performance is effectively improved.

[0030] Referring to Figures 1-7 An annular sealing groove 15 for installing a sealing gasket is arranged on the gas outlet flange 9 to prevent gas overflow.

[0031] Referring to Figures 1-7 A plane 17 for supporting external components is arranged at the bottom of the hydrogen manifold 2 and is in the same height as the mounting ear 16 on one side of the plane, the product structure design includes combining two products with different structures into a group, the air and fuel manifold forming process is obtained by casting, and the product structure design also includes combining two products with different structures into a group and forming an assembly structure in parallel.

[0032] Beneficial effects:

[0033] 1. The air manifold 1 and the hydrogen manifold 2 are connected with the gas outlet flange 9 through the hydrogen branch pipe 3 and the air branch pipe 31; the hydrogen branch pipe 3 is 6, the air branch pipe 31 is 3, and is divided into three groups, two hydrogen branch pipes 3 are arranged on both sides of the air branch pipe 31, the hydrogen branch pipe 3 and the air branch pipe 31 are smoothly connected with each part, which will not cause uneven gas flow into each flow channel, so as to ensure smooth gas flow and pressure difference balance of each inlet and outlet, so as to improve key indicators such as temperature field balance, and then the gas in the flow channel is mixed, the mixed gas is mixed to the best mixing effect, and the structure shape is more stable.

[0034] 2. The hydrogen intake cross section 44 and the hydrogen branch pipe cross section 45; the air main pipe cross section 33 area is ￠54mm, the air intake cross section 34 is ￠35mm, the air branch pipe cross section 35 is ￠15mm; the hydrogen main pipe cross section 41 area is ￠70mm; the hydrogen intake cross section 44 is ￠59mm, the hydrogen branch pipe 45 cross section is ￠32mm, so that the gas is mixed and enters, and the hydrogen can be stably converted, so as to improve the forming conversion efficiency and use performance of the product, reduce the manufacturing cost of the product, and the grouping and gas entering design of the assembly make the gas uniform, reduce the buffer, and effectively improve the conversion efficiency and use performance of the fuel cell.

[0035] Embodiment 2: refer to Figures 1-7 Embodiment 2 is a further improvement based on Embodiment 1, the air manifold 1 and the hydrogen manifold 2 are fixed by the rib plate 14, the rib plate is 5 rib plates and is evenly distributed, and the root and the manifold are welded without gap, so that the entering gas can be smoothly transitioned, and the non-uniform mixing caused by insufficient gas entering the pipeline is avoided.

[0036] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited, and other modifications or equivalent replacements of the technical solutions of the present application made by those skilled in the art should be covered in the scope of the claims of the present application, as long as they do not deviate from the spirit and scope of the technical solutions of the present application.

[0037] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A new hydrogen energy air and fuel manifold assembly, comprising a manifold body (50) and two sets of connecting pipe groups (24), the manifold body (50) comprising two sets of air and fuel manifolds (20), the air and fuel manifolds (20) being arranged in groups, the air and fuel manifolds (20) comprising an air manifold (1), a hydrogen manifold (2) and a plurality of ribs (14), the air manifold (1) comprising an air inlet flange (8), an air main pipe (30), an outlet flange (9), an air branch pipe (31); the hydrogen manifold (2) comprising a hydrogen inlet flange (7), a hydrogen main pipe (40), a hydrogen branch pipe (3); the outlet flanges of the air manifold (1) and the hydrogen manifold are an outlet flange (9), which is connected through the air branch pipe (31) and the hydrogen branch pipe (3) with the air main pipe (30) and the hydrogen main pipe (40); the air main pipe (30) and the hydrogen main pipe (40) are fixedly connected through the ribs (14); the connecting pipe group (24) comprises a hydrogen inlet connecting pipe (21) and an air inlet connecting pipe (19); the air inlet of the air manifold (1) is connected through the air inlet connecting pipe (19) in the connecting pipe group (24), and the air inlet of the hydrogen manifold (2) is connected through the hydrogen inlet connecting pipe (21) in the connecting pipe group (24).

2. The novel hydrogen energy air and fuel manifold assembly of claim 1, wherein: the cross section of the air manifold (1) comprises an air main pipe cross section (33), an air inlet cross section (34) and an air branch pipe cross section (35); the cross section of the hydrogen manifold (2) comprises a hydrogen main pipe cross section (41), a hydrogen inlet cross section (44) and a hydrogen branch pipe cross section (45); the area of the air main pipe cross section (33) is ￠54mm, the air inlet cross section (34) is ￠35mm, the air branch pipe cross section (35) is ￠15mm; the area of the hydrogen main pipe cross section (41) is ￠70mm; the hydrogen inlet cross section (44) is ￠59mm, and the hydrogen branch pipe cross section (45) is ￠32mm.

3. The novel hydrogen energy air and fuel manifold assembly of claim 1, wherein: the hydrogen manifold (2) has a hydrogen inlet flange (7), and the air manifold (1) has an outlet flange (9), the outlet flange (9) has a hydrogen outlet (11) and an air outlet (12); the air outlet (12) is located between the two hydrogen outlets (11), the hydrogen inlet flange (7), the air inlet flange (8) and the outlet flange (9) are provided with threaded holes (10) along the end of the flange periphery, and the air manifold (1) and the hydrogen manifold (2) are fixed and uniformly distributed through the ribs (14).

4. The novel hydrogen energy air and fuel manifold assembly of claim 1, wherein: the branch pipe (3) is provided with a mounting hole (4) for a monitoring sensor.

5. The novel hydrogen energy air and fuel manifold assembly of claim 3, wherein: the hydrogen inlet flange (7) and the air inlet flange (8) and the outlet flange (9) are provided with a cutting groove (13) for mounting a sealing gasket.

6. The novel hydrogen energy air and fuel manifold assembly of claim 1, wherein: the air manifold (1) and the hydrogen manifold (2) are provided with a process hole (22) for positioning a core.

7. The novel hydrogen energy air and fuel manifold assembly of claim 1, wherein: The air manifold (1) is provided with ears (18) on one side for assisting installation and support, the ears (18) are level with the air outlet flange (9), the hydrogen manifold (2) is provided with a plurality of external mounting ears (16) on one side, the mounting ears (16) are level with the plane (17) for supporting external components.

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