Filtering device of hydrogen fuel cell cooling pipeline
A modular filter system with sealed valves for hydrogen fuel cells addresses coolant waste and contamination risks during maintenance, enhancing efficiency and reducing costs.
Patent Information
- Application Number
- CN202422071903.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-26
AI Technical Summary
In the existing hydrogen fuel cell cooling system, the coolant needs to be emptied when the particulate filter is replaced, resulting in waste and high costs. At the same time, the disassembly and assembly process can easily lead to coolant contamination, affecting system performance.
A filter device including a first joint, a second joint, a filter assembly, a fastener, a first valve body and a second valve body is designed, and is connected and fixed by a flange structure. The valve body is used to control the opening and breaking of the pipeline to realize the rapid disassembly and replacement of the filter assembly, without the need to discharge coolant and keep the pipeline sealed.
Improve maintenance efficiency, reduce maintenance costs, and avoid the entry of external impurities, ensuring stable performance of hydrogen fuel cells.
Smart Images
Figure CN223096308U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fuel cell cooling pipelines, in particular to a filtering device for a hydrogen fuel cell cooling pipeline. Background Art
[0002] During the operation of the stack of a hydrogen fuel cell, a coolant is required for cooling. During the circulation of the coolant in the cooling system, internal or external particulate impurities may enter the coolant. To prevent the particulate impurities from entering the stack along with the circulation of the cooling system, causing blockage of the internal channels of the stack and resulting in a reduction in the power of the system hydrogen fuel cell, a maintainable particulate filter needs to be added at the coolant filling port of the cooling system.
[0003] Currently, the particulate filters applicable to hydrogen fuel cells on the market are integrated. During maintenance or replacement, the coolant in the cooling pipeline is first drained. After replacing the particulate filter, the coolant is refilled, resulting in waste of coolant. At the same time, the maintenance time is relatively long, the maintenance efficiency is low, and the maintenance cost is relatively high. In addition, since the cooling flow channel is in an open state during the disassembly and assembly of the particulate filter, external impurities are likely to enter the cooling pipeline through the interface between the particulate filter and the cooling pipeline. When the coolant is added later, it is easy to cause coolant pollution, a reduction in the power of the system hydrogen fuel cell, and an increase in potential faults. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a filtering device for a hydrogen fuel cell cooling pipeline, which can achieve rapid maintenance of the filtering device without draining the coolant in the cooling pipeline, improve the maintenance efficiency, and reduce the maintenance cost. Moreover, during the maintenance process of the filtering device, the cooling pipeline can be kept in a sealed state all the time, preventing external impurities from entering the cooling pipeline and causing a reduction in the power of the hydrogen fuel cell.
[0005] To achieve the above purpose, the utility model provides a filtering device for a hydrogen fuel cell cooling pipeline, which comprises a first joint, a second joint, a filtering assembly, a fastener, a first valve body and a second valve body;
[0006] The first joint and the second joint are coaxially arranged and communicate with each other. One end of the first joint is provided with a first port, and the other end is provided with a second port; one end of the second joint is provided with a third port, and the other end is provided with a fourth port; a first flange is provided at the second port, and a second flange is provided at the third port. The first flange and the second flange are arranged opposite to each other and are fixedly connected by the fasteners. One end of the filter assembly is arranged in the second port, and the other end is arranged in the third port. The first port is provided with the first valve body, and the fourth port is provided with the second valve body. The first valve body and the second valve body are respectively connected to the ends of the cooling pipeline. The first valve body is used to control the on-off between the first port and one end of the cooling pipeline, and the second valve body is used to control the on-off between the fourth port and the other end of the cooling pipeline.
[0007] Further, the filter assembly includes a bracket, a first filter screen, and a second filter screen that are coaxially arranged; an installation groove is provided on one side of the bracket facing the second joint, and the first filter screen is fixedly arranged in the installation groove. The second filter screen is fixedly arranged inside the first filter screen, and the filtering aperture of the second filter screen is larger than that of the first filter screen.
[0008] Further, the first filter screen is a cylindrical filter screen, and an opening is provided at the end of the cylindrical filter screen facing the second joint. The second filter screen is a circular filter screen, and the circular filter screen is attached to the bottom surface of the cylindrical filter screen and fixed to the bracket.
[0009] Further, a liquid passing hole communicating with the installation groove is axially provided on the bracket.
[0010] Further, an annular protrusion is provided on the end face of the first flange facing the second joint, and a limiting groove corresponding to the annular protrusion is provided on the inner wall of the third port.
[0011] Further, the fasteners include a locking screw and a locking nut that are threadedly connected.
[0012] Further, one end of the first valve body is sleeved on the first port, and anti - detachment protrusions and sealing protrusions for connecting with the cooling pipeline are provided on the outer wall of the other end of the first valve body. One end of the second valve body is sleeved on the third port, and the anti - detachment protrusions and sealing protrusions for connecting with the cooling pipeline are provided on the outer wall of the other end.
[0013] Further, a gasket is also provided between the first flange and the second flange.
[0014] Further, the filter assembly further includes a connecting member. The connecting member includes a connecting screw, an elastic washer, and a connecting nut. The connecting screw sequentially passes through the bracket, the first filter screen, the second filter screen, the elastic washer, and the connecting nut and is fixedly connected.
[0015] Compared with the prior art, the filtering device for the hydrogen fuel cell cooling pipeline in the embodiment of the present utility model has the following beneficial effects: The first joint and the second joint are fixedly connected through a flange structure, and a first valve body is arranged on the first joint, and a second valve body is arranged on the second joint. The first valve body and the second valve body are respectively connected to the cooling pipeline. When maintaining the filtering device, the first valve body is used to control the disconnection of the first port from one end of the cooling pipeline, and the second valve body is used to control the disconnection of the fourth port from the other end of the cooling pipeline, so as to disassemble and replace the filtering component without discharging the coolant in the cooling pipeline. At this time, the cooling pipeline is always in a sealed state, avoiding foreign impurities from entering the cooling pipeline and causing the power of the hydrogen fuel cell to decrease, improving the maintenance efficiency and reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the filtering device for the hydrogen fuel cell cooling pipeline in the embodiment of the present utility model;
[0017] Figure 2 is an exploded view of the parts of the filtering device for the hydrogen fuel cell cooling pipeline in the embodiment of the present utility model;
[0018] Figure 3 is a schematic structural diagram of the first joint of the filtering device for the hydrogen fuel cell cooling pipeline in the embodiment of the present utility model;
[0019] Figure 4 is a cross-sectional view of the filtering component of the filtering device for the hydrogen fuel cell cooling pipeline in the embodiment of the present utility model.
[0020] In the figure, 1. First joint; 11. First port; 12. Second port; 121. First flange; 1211. Annular protrusion; 2. Second joint; 21. Third port; 211. Second flange; 212. Limit groove; 22. Fourth port; 3. Filtering component; 31. Bracket; 311. Installation groove; 312. Liquid passing hole; 32. First filter screen; 33. Second filter screen; 4. Fastening piece; 41. Locking screw; 42. Locking nut; 5. First valve body; 6. Second valve body; 7. Anti-detachment boss; 8. Sealing boss; 9. Connecting piece; 91. Connecting screw; 92. Elastic washer; 93. Connecting nut. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The following will further describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "inner", "outer", etc. in the present utility model is based on the 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 devices and components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0023] In the description of the present utility model, it should be understood that terms such as "first", "second", etc. are used in the present utility model to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish each other for the same type of information. For example, without departing from the scope of the present utility model, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.
[0024] Refer to Figures 1 to 4 , a filtering device for a hydrogen fuel cell cooling pipeline in a preferred embodiment of the present utility model includes a first joint 1, a second joint 2, a filtering component 3, a fastener 4, a first valve body 5 and a second valve body 6; the first joint 1 and the second joint 2 are coaxially arranged and communicate with each other. Specifically, refer to Figure 2 , one end of the first joint 1 is provided with a first port 11, and the other end is provided with a second port 12; one end of the second joint 2 is provided with a third port 21, and the other end is provided with a fourth port 22; for the convenience of quick disassembly of the first joint 1 and the second joint 2. In this embodiment, refer to Figure 2 , a first flange 121 is provided at the second port 12, a second flange 211 is provided at the third port 21, the first flange 121 and the second flange 211 are arranged opposite to each other and are fixedly connected through a fastener 4. One end of the filtering component 3 is arranged in the second port 12, and the other end is arranged in the third port 21. When the second port 12 and the third port 21 communicate, a cavity is formed inside for installing the filtering component 3. Among them, the first joint 1 and the second joint 2 are respectively connected to both ends of the cooling pipeline. For the convenience of controlling the disconnection of the first joint 1, the second joint 2 and the cooling pipeline when disassembling and assembling the filtering device, a first valve body 5 is provided at the first port 11, and a second valve body 6 is provided at the fourth port 22. The first valve body 5 and the second valve body 6 are respectively connected to the ends of the cooling pipeline. The first valve body 5 is used to control the on-off between the first port 11 and one end of the cooling pipeline, and the second valve body 6 is used to control the on-off between the fourth port 22 and the other end of the cooling pipeline.
[0025] Furthermore, for the convenience of designing the filtering component 3 and improving the filtering effect of the cooling pipeline, refer to Figure 3, in this embodiment, the filtering component 3 includes a bracket 31, a first filter screen 32 and a second filter screen 33 arranged coaxially; in order to facilitate the installation and positioning of the first filter screen 32, an installation groove 311 is provided on one side of the bracket 31 facing the second joint 2, the first filter screen 32 is fixedly arranged in the installation groove 311, the second filter screen 33 is fixedly arranged inside the first filter screen 32, and the filtering aperture of the second filter screen 33 is larger than that of the first filter screen 32. By setting two layers of filter screens, the filtering effect of the coolant is improved.
[0026] Furthermore, in order to facilitate the design of the first filter screen 32 and the second filter screen 33, in this embodiment, the first filter screen 32 is a cylindrical filter screen, and an opening is provided at the end of the cylindrical filter screen facing the second joint 2. The second filter screen 33 is a circular filter screen arranged inside the cylindrical filter screen, and the circular filter screen is attached to the bottom surface of the cylindrical filter screen and fixed to the bracket 31.
[0027] Furthermore, in this embodiment, refer to Figure 4 , the bracket 31, the first filter screen 32 and the second filter screen 33 are all arranged coaxially. In order to facilitate the fixed connection of the three, the filtering component 3 further includes a connecting piece 9. Specifically, refer to Figure 4 , the connecting piece 9 includes a connecting screw 91, an elastic washer 92 and a connecting nut 93. The connecting screw 91 passes through the bracket 31, the first filter screen 32, the second filter screen 33, the elastic washer 92 and the connecting nut 93 in sequence for fixed connection. Among them, one end of the elastic washer 92 abuts against the second filter screen 33, and the other end abuts against the connecting nut 93, preventing the connecting nut 93 from directly abutting against the second filter screen 33 and causing the second filter screen 33 to deform. Furthermore, in order to facilitate the flow of the coolant, the bracket 31 is axially provided with a liquid passing hole 312 communicating with the installation groove 311.
[0028] Furthermore, refer to Figure 3 , in order to facilitate, the end face of the first flange 121 facing the second joint 2 is provided with an annular protrusion 1211, and a limiting groove 212 corresponding to the annular protrusion 1211 is opened on the inner wall of the third port 21. Furthermore, in order to facilitate the sealing after the connection of the first flange 121 and the second flange 211, a sealing gasket (not shown in the figure) is also provided between the first flange 121 and the second flange 211. In this embodiment, in order to simplify the joint of the fastener 4, refer to Figure 2 , the fastener 4 includes a locking screw and a locking nut 42 connected by threads.
[0029] Furthermore, in order to facilitate the anti - detachment and sealing during the installation of the first valve body 5, the second valve body 6 and the cooling pipeline, refer to Figure 1 、 Figure 2, one end of the first valve body 5 is sleeved on the first port 11, and anti - detachment bosses 7 and sealing bosses 8 for connecting with the cooling pipeline are arranged on the outer wall of the other end of the first valve body 5. Similarly, one end of the second valve body 6 is sleeved on the third port 21, and anti - detachment bosses 7 and sealing bosses 8 for connecting with the cooling pipeline are arranged on the outer wall of the other end.
[0030] In summary, the embodiment of the present utility model provides a filtering device for a hydrogen fuel cell cooling pipeline. The first joint 1 and the second joint 2 are fixedly connected through a flange structure. A first valve body 5 is arranged on the first joint 1, and a second valve body 6 is arranged on the second joint 2. The first valve body 5 and the second valve body 6 are respectively connected with the cooling pipeline. When maintaining the filtering device, the first valve body 5 controls the disconnection between the first port 11 and one end of the cooling pipeline, and the second valve body 6 controls the disconnection between the fourth port 22 and the other end of the cooling pipeline, so as to disassemble and replace the filtering component 3 without discharging the coolant in the cooling pipeline. At this time, the cooling pipeline is always in a sealed state, avoiding external impurities from entering the cooling pipeline, resulting in a reduction in the power of the hydrogen fuel cell, improving the maintenance efficiency, and reducing the maintenance cost.
[0031] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.
Claims
1. A filtering device for a hydrogen fuel cell cooling pipeline, characterized in that: It includes a first joint, a second joint, a filtering component, a fastener, a first valve body and a second valve body; The first joint and the second joint are coaxially arranged and communicate with each other. One end of the first joint is provided with a first port, and the other end is provided with a second port; one end of the second joint is provided with a third port, and the other end is provided with a fourth port; a first flange is provided at the second port, and a second flange is provided at the third port. The first flange and the second flange are oppositely arranged and fixedly connected through the fastener. One end of the filtering component is arranged in the second port, and the other end is arranged in the third port. The first port is provided with the first valve body, and the fourth port is provided with the second valve body. The first valve body and the second valve body are respectively connected to the ends of the cooling pipeline. The first valve body is used to control the on-off of the first port and one end of the cooling pipeline, and the second valve body is used to control the on-off of the fourth port and the other end of the cooling pipeline.
2. The filtering device for the hydrogen fuel cell cooling pipeline according to claim 1, wherein: The filtering component includes a bracket, a first filter screen and a second filter screen that are coaxially arranged; on the side of the bracket facing the second joint, there is an installation groove, and the first filter screen is fixedly arranged in the installation groove. The second filter screen is fixedly arranged inside the first filter screen, and the filtering aperture of the second filter screen is larger than that of the first filter screen.
3. The filtering device for the hydrogen fuel cell cooling pipeline according to claim 2, characterized in that: The first filter screen is a cylindrical filter screen. The end of the cylindrical filter screen facing the second joint is provided with an opening. The second filter screen is a circular filter screen, and the circular filter screen is attached to the bottom surface of the cylindrical filter screen and fixed to the bracket.
4. The filtering device for the hydrogen fuel cell cooling pipeline according to claim 2, characterized in that: The bracket is axially provided with a liquid passing hole communicating with the installation groove.
5. The filtering device for the hydrogen fuel cell cooling pipeline according to claim 1, characterized in that: The end face of the first flange facing the second joint is provided with an annular protrusion, and a limiting groove corresponding to the annular protrusion is opened on the inner wall of the third port.
6. The filtering device for a hydrogen fuel cell cooling pipeline according to claim 1, characterized in that: The fastener includes a locking screw and a locking nut that are threadedly connected.
7. The filtering device for a hydrogen fuel cell cooling pipeline according to claim 1, characterized in that: One end of the first valve body is sleeved on the first port. On the outer wall of the other end of the first valve body, there are an anti-disengagement boss and a sealing boss for connecting with the cooling pipeline. One end of the second valve body is sleeved on the third port, and on the outer wall of the other end, there are the anti-disengagement boss and the sealing boss for connecting with the cooling pipeline.
8. The filtering device for a hydrogen fuel cell cooling pipeline according to claim 1, characterized in that: A gasket is also provided between the first flange and the second flange.
9. The filtering device for a hydrogen fuel cell cooling pipeline according to claim 2, characterized in that: The filtering component further includes a connecting piece. The connecting piece includes a connecting screw, an elastic washer and a connecting nut. The connecting screw sequentially passes through the bracket, the first filter screen, the second filter screen, the elastic washer and the connecting nut and is fixedly connected.