Flow guide cover structure of three-way valve for hydrogen fuel cell

Abstract

The utility model is applicable to the technical field of three-way valves for hydrogen fuel cells, and particularly relates to a flow guide cover structure of a three-way valve for a hydrogen fuel cell, which comprises a three-way valve main body, a bypass passage and an air inlet are respectively arranged on two sides of the outer side of the three-way valve main body, and a lower port of the three-way valve main body is connected with a main passage. The upper surface of the three-way valve body is connected with a fixed end face, the surface of the fixed end face is connected with a mounting seat, a transmission structure is mounted in the mounting seat, a bush is arranged in the three-way valve body, a valve rod is movably connected in the bush, and the transmission structure is used for driving the valve rod to move. According to the three-way valve, the flow guide cover of the conical structure is arranged on the lower surface of the valve plate, when gas enters a main channel, the flow resistance of inlet gas can be greatly reduced, the gas can flow more smoothly in the three-way valve body and the main channel, and the service life of the three-way valve is prolonged. Therefore, the flow guide cover structure of the three-way valve for the hydrogen fuel cell has relatively high practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way valves for hydrogen fuel cells, in particular to a flow guide cover structure of a three-way valve for hydrogen fuel cells. Background Art

[0002] As environmental protection and energy issues become increasingly prominent, hydrogen fuel cells, as a clean energy technology, have received widespread attention and application. In hydrogen fuel cell engine systems, three-way valves, as important control components, play a vital role in the flow and distribution of hydrogen.

[0003] The traditional three-way valve structure usually lacks optimization of the gas flow path in design, especially when the gas enters the main passage, it is easy to generate large flow resistance. This resistance not only reduces the utilization efficiency of hydrogen, but also may cause pressure fluctuations in the system, affecting the stability and reliability of the hydrogen fuel cell engine. In this regard, the utility model provides a guide cover structure of a three-way valve for a hydrogen fuel cell to solve the above technical problems. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a flow guide cover structure of a three-way valve for a hydrogen fuel cell, aiming to solve the technical problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A flow deflector structure of a three-way valve for a hydrogen fuel cell, comprising a three-way valve body, and a bypass passage and an air inlet are respectively arranged on two sides of the outer side of the three-way valve body, a lower port of the three-way valve body is connected to a main passage, an upper surface of the three-way valve body is connected to a fixed end surface, and a surface of the fixed end surface is connected to a mounting seat, a transmission structure is installed inside the mounting seat, a bushing is arranged inside the three-way valve body, and a valve stem is movably connected inside the bushing, and the transmission structure is used to drive the valve stem to move;

[0007] A valve plate is sleeved on the area of ​​the valve stem surface away from the transmission structure, and a spring is installed on the surface of the valve plate;

[0008] One end of the valve stem is detachably connected to a flow guide cover, and the flow guide cover is a conical structure, and the surface of the flow guide cover is provided with a curved surface feature.

[0009] Furthermore, a fixed threaded hole is provided inside the deflector, a fixed threaded feature is provided on one side of the valve stem surface, and the deflector is detachably connected to the valve stem through the cooperation of the fixed threaded hole and the fixed threaded feature.

[0010] Furthermore, a plurality of reinforcing ribs are arranged inside the air deflector.

[0011] Furthermore, a sealing ring is provided at the connection between the three-way valve body and the main passage, and an embedded sealing member is provided at one end of the main passage close to the three-way valve body.

[0012] Furthermore, a skeleton sealing ring is installed inside the three-way valve body, and the valve stem is arranged through the inside of the skeleton sealing ring.

[0013] The utility model provides a flow guide cover structure of a three-way valve for a hydrogen fuel cell, which has the following beneficial effects:

[0014] By arranging a conical flow guide cover on the lower surface of the valve plate, the flow resistance of the intake air can be greatly reduced when the gas enters the main passage, so that the gas can flow more smoothly inside the three-way valve body and the main passage, thereby making the flow guide cover structure of the three-way valve for hydrogen fuel cells highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic structural diagram of a flow guide cover structure of a three-way valve for a hydrogen fuel cell.

[0016] Figure 2 The present invention is a schematic diagram of the upward structure of a guide cover structure of a three-way valve for a hydrogen fuel cell.

[0017] Figure 3 The present invention is a front cross-sectional view of a guide cover structure of a three-way valve for a hydrogen fuel cell.

[0018] Figure 4 The present invention is a schematic diagram of the three-dimensional structure of a valve stem and a flow guide cover in a flow guide cover structure of a three-way valve for a hydrogen fuel cell.

[0019] Figure 5 The present invention is a front plan view of a valve stem and a flow guide cover in a flow guide cover structure of a three-way valve for a hydrogen fuel cell.

[0020] Figure 6 The present invention is a schematic diagram of the three-dimensional structure of a flow guide cover in a flow guide cover structure of a three-way valve for a hydrogen fuel cell.

[0021] Figure 7 The present invention is a front plan view of a flow guide cover in a flow guide cover structure of a three-way valve for a hydrogen fuel cell.

[0022] In the figure: 1. Three-way valve body; 2. Bypass passage; 3. Mounting seat; 4. Fixed end face; 5. Air inlet; 6. Main passage; 7. Transmission structure; 8. Bushing; 9. Sealing ring; 10. Valve plate; 11. Guide cover; 12. Valve stem; 13. Skeleton sealing ring; 14. Spring; 15. Fixed thread feature; 16. Fixed thread hole; 17. Reinforcement rib; 18. Surface feature; 19. Inlaid seal. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0025] like Figure 1-Figure 7 As shown, a flow guide cover structure of a three-way valve for a hydrogen fuel cell provided in an embodiment of the utility model comprises a three-way valve body 1, and a bypass passage 2 and an air inlet 5 are respectively arranged on both sides of the outer side of the three-way valve body 1, a main passage 6 is connected to the lower port of the three-way valve body 1, a fixed end face 4 is connected to the upper surface of the three-way valve body 1, and a mounting seat 3 is connected to the surface of the fixed end face 4, a transmission structure 7 is installed inside the mounting seat 3, and the transmission structure 7 can adopt a mature and commonly used transmission scheme in the prior art. The above technical features are all mature prior art, and are technical solutions that are not difficult to obtain or think of by technical personnel in the field, and technical personnel in the field can make corresponding adjustments and selections on the basis of the above technical solutions.

[0026] A bushing 8 is disposed inside the three-way valve body 1, and a valve stem 12 is movably connected inside the bushing 8, and the transmission structure 7 is used to drive the valve stem 12 to move;

[0027] A valve plate 10 is sleeved on the surface of the valve stem 12 away from the transmission structure 7, and a spring 14 is installed on the surface of the valve plate 10;

[0028] One end of the valve stem 12 is detachably connected to a flow guide cover 11 , and the flow guide cover 11 is a conical structure, and a curved surface feature 18 is provided on the surface of the flow guide cover 11 .

[0029] In one embodiment of the utility model, the valve stem 12 is driven to move up and down inside the bushing 8 by the transmission structure 7, so that the valve stem 12 can drive the valve plate 10 to open and close;

[0030] By arranging a conical flow guide cover 11 on the lower surface of the valve plate 10, the flow resistance of the intake air can be greatly reduced when the gas enters the main passage 6, so that the gas can flow more smoothly inside the three-way valve body 1 and the main passage 6, thereby making the flow guide cover structure of the three-way valve for the hydrogen fuel cell highly practical.

[0031] In this embodiment, a fixed threaded hole 16 is provided inside the air deflector 11, and a fixed threaded feature 15 is provided on one side of the surface of the valve stem 12, and the air deflector 11 is detachably connected to the valve stem 12 through the cooperation of the fixed threaded hole 16 and the fixed threaded feature 15. Through this threaded and screw hole connection method, not only can the air deflector 11 be conveniently assembled and disassembled on the valve stem 12, but also the reliability of the connection between the valve stem 12 and the air deflector 11 can be ensured.

[0032] In this embodiment, a plurality of reinforcing ribs 17 are disposed inside the air deflector 11 , so as to improve the overall strength of the air deflector 11 .

[0033] In this embodiment, a sealing ring 9 is provided at the connection between the three-way valve body 1 and the main passage 6, and an embedded sealing member 19 is provided at one end of the main passage 6 close to the three-way valve body 1, thereby improving the sealing performance between the three-way valve body 1 and the main passage 6, and when the valve plate 10 closes the port of the main passage 6, it can ensure that the port of the main passage 6 is fully closed.

[0034] In this embodiment, a skeleton sealing ring 13 is installed inside the three-way valve body 1, and the valve stem 12 is arranged inside the skeleton sealing ring 13, thereby ensuring the sealing of the transmission area on the upper part of the three-way valve body 1 and the inside of the three-way valve body 1, and preventing the gas entering the inside of the three-way valve body 1 from entering the transmission area.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flow deflector structure of a three-way valve for a hydrogen fuel cell, comprising a three-way valve body (1), wherein a bypass passage (2) and an air inlet (5) are respectively arranged on two sides of the outer side of the three-way valve body (1), a main passage (6) is connected to the lower end of the three-way valve body (1), a fixed end surface (4) is connected to the upper surface of the three-way valve body (1), and a mounting seat (3) is connected to the surface of the fixed end surface (4), and a transmission structure (7) is installed inside the mounting seat (3), characterized in that: The three-way valve body (1) is provided with a bushing (8) inside, and the bushing (8) is movably connected with a valve stem (12) inside, and the transmission structure (7) is used to drive the valve stem (12) to move; A valve plate (10) is sleeved on a region of the surface of the valve stem (12) away from the transmission structure (7), and a spring (14) is installed on the surface of the valve plate (10); One end of the valve stem (12) is detachably connected to a flow guide cover (11), and the flow guide cover (11) is a conical structure, and a surface of the flow guide cover (11) is provided with a curved surface feature (18).

2. The flow guide cover structure of a three-way valve for a hydrogen fuel cell according to claim 1, characterized in that: The interior of the deflector cover (11) is provided with a fixed threaded hole (16), one side of the surface of the valve stem (12) is provided with a fixed threaded feature (15), and the deflector cover (11) is detachably connected to the valve stem (12) through the cooperation of the fixed threaded hole (16) and the fixed threaded feature (15).

3. The flow guide cover structure of a three-way valve for a hydrogen fuel cell according to claim 1, characterized in that: A plurality of reinforcing ribs (17) are arranged inside the air deflector (11).

4. The flow guide cover structure of a three-way valve for a hydrogen fuel cell according to claim 1, characterized in that: A sealing ring (9) is provided at the connection between the three-way valve body (1) and the main passage (6), and an embedded sealing member (19) is provided at one end of the main passage (6) close to the three-way valve body (1).

5. The flow guide cover structure of a three-way valve for a hydrogen fuel cell according to claim 1, characterized in that: A skeleton sealing ring (13) is installed inside the three-way valve body (1), and the valve stem (12) is arranged to penetrate inside the skeleton sealing ring (13).

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