Three-way valve for hydrogen fuel engine system

Abstract

The utility model relates to a three-way valve for a hydrogen fuel engine system, which comprises a three-way valve body, a bypass passage and an air inlet are respectively arranged on two sides of the outer side of the three-way valve body, and the lower portion of the three-way valve body is detachably connected with a main passage. By arranging the mounting seat, the valve rod connecting block, the second pin shaft, the transmission half gear, the first gear set, the second gear set, the mounting sleeve, the first pin shaft, the driving motor and the driving gear, the driving motor and a transmission part driven by the driving motor can be integrated on the mounting seat, so that the size of the whole transmission structure can be reduced; in addition, the rotating motion of the moving bearing on the transmission half gear is converted into the linear motion of the valve rod driven by the valve rod connecting block, so that the valve rod can smoothly move in the lining, the friction between the valve rod and the three-way valve body is reduced, and the service life of the three-way valve is prolonged. Therefore, the service life of the three-way valve for the hydrogen fuel engine system is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cell engine systems, in particular to a three-way valve used in hydrogen fuel engine systems. Background Art

[0002] As a clean and efficient energy technology, hydrogen fuel cell technology has received extensive attention and application in recent years. In the hydrogen fuel cell engine system, the three-way valve, as a key component, plays an important role in regulating and controlling the flow of hydrogen.

[0003] The existing three-way valve for hydrogen fuel engine systems has problems in the transmission structure, such as large size, low integration, and insufficiently smooth valve stem movement. These problems not only increase the space occupied by the system, but also lead to greater friction between the valve stem and the valve body, thereby affecting the service life of the three-way valve. In response to this, the utility model provides a three-way valve for a hydrogen fuel engine system to solve the above technical problems. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a three-way valve for a hydrogen fuel engine system, 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 three-way valve for a hydrogen fuel engine system, comprising a three-way valve body, wherein a bypass passage and an air inlet are respectively arranged on two sides of the outer side of the three-way valve body, a main passage is detachably connected to the lower part of the three-way valve body, a fixed end face is arranged on the upper part of the three-way valve body, and a mounting seat is detachably connected to the surface of the fixed end face;

[0007] The three-way valve body is provided with a bushing inside, and a valve stem is provided inside the bushing, one side of the valve stem surface is connected with a valve plate, a spring is installed on the surface of the valve plate, and one end of the spring away from the valve plate is connected to the inside of the three-way valve body;

[0008] A driving motor is installed on the side of the mounting seat, and a driving gear is installed on the output end of the driving motor. A second gear set and a first gear set are installed inside the mounting seat. A first pin shaft is installed on the surface of the mounting seat, and a mounting sleeve is sleeved on the outer side of the first pin shaft. A transmission half gear is installed on the outer side of the mounting sleeve, and a retaining spring is installed between the mounting sleeve and the first pin shaft.

[0009] A valve stem connecting block is detachably connected to a position of the valve stem surface away from the valve plate, and a motion bearing mounting groove is provided on the surface of the valve stem connecting block, a motion bearing is mounted inside the motion bearing mounting groove, and a second pin shaft is connected inside the motion bearing, and one end of the second pin shaft away from the motion bearing is connected to the transmission half gear.

[0010] Furthermore, the second gear set is composed of a first spur gear and a first bevel gear, the first gear set is composed of a second bevel gear and a second spur gear, and the outer diameter of the first spur gear is larger than the outer diameter of the first bevel gear, and the outer diameter of the second bevel gear is larger than the outer diameter of the second spur gear, a third pin is installed on the outer side of the mounting seat, and the first spur gear of the second gear set is installed on the third pin, a gear fixing pin is installed inside the mounting seat, and the second bevel gear of the first gear set is installed on the gear fixing pin, the driving gear is meshed with the first spur gear, the first bevel gear is meshed with the second bevel gear, and the second spur gear is meshed with the transmission half gear.

[0011] Furthermore, a first fixing hole is provided on the side of the valve stem connecting block, a valve stem connecting hole is provided on the surface of the valve stem connecting block, a second fixing hole is provided on the surface of the valve stem, the valve stem is penetrated inside the valve stem connecting hole, and screws are penetrated inside the first fixing hole and the second fixing hole, and the valve stem and the valve stem connecting block are detachably connected together by the cooperation of the screws, the first fixing hole and the second fixing hole.

[0012] Furthermore, the three-way valve body and the main passage, and the fixed end face and the mounting seat are detachably connected together by bolt and screw hole connection, and a sealing ring is arranged between the three-way valve body and the main passage, a skeleton sealing ring is installed inside the three-way valve body, and the valve stem is arranged inside the skeleton sealing ring.

[0013] Furthermore, a first sealing bevel is provided inside the valve body of the three-way valve, a second sealing bevel is provided on the surface of the valve plate, and the shape of the second sealing bevel matches the shape of the first sealing bevel, a valve stem fixing hole is provided on the surface of the valve plate, and the valve stem is arranged inside the valve stem fixing hole, and a vulcanized rubber layer is sleeved on the outer side of the valve plate.

[0014] Furthermore, an inlaid seal is provided inside the main passage near the valve body of the three-way valve, and the inlaid seal cooperates with the vulcanized rubber layer on the valve plate to form a bevel seal.

[0015] Furthermore, a plurality of positioning columns are provided on the surface of the fixed end surface, and the positioning columns are used to limit the position of the mounting seat.

[0016] Furthermore, a magnetic steel is installed on the outer side of the valve stem connecting block.

[0017] The utility model provides a three-way valve for a hydrogen fuel engine system, which has the following beneficial effects:

[0018] By arranging a mounting seat, a valve stem connecting block, a second pin shaft, a transmission half gear, a first gear set, a second gear set, a mounting sleeve, a first pin shaft, a driving motor and a driving gear, the driving motor and the transmission components driven by the driving motor can be integrated on the mounting seat, so that the volume of the entire transmission structure can be reduced and the degree of integration can be greatly improved. In addition, by converting the rotational motion of the moving bearing on the transmission half gear into the linear motion of the valve stem driven by the valve stem connecting block, the valve stem can move smoothly inside the bushing, reducing the friction between the valve stem and the valve body of the three-way valve, thereby improving the service life of the three-way valve used in the hydrogen fuel engine system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the structure of a three-way valve used in a hydrogen fuel engine system.

[0020] Figure 2 The figure is a schematic diagram of the upward structure of a three-way valve used in a hydrogen fuel engine system.

[0021] Figure 3 The present invention is a front cross-sectional view of a three-way valve used in a hydrogen fuel engine system.

[0022] Figure 4 A side cross-sectional view of a three-way valve for a hydrogen fuel engine system.

[0023] Figure 5 The figure is a schematic diagram of the structure of a valve stem in a three-way valve used in a hydrogen fuel engine system.

[0024] Figure 6 The diagram is a front structural diagram of a valve stem and various components carried by the valve stem in a three-way valve used in a hydrogen fuel engine system.

[0025] Figure 7 The diagram is a top view structural diagram of a valve stem and various components carried by the valve stem in a three-way valve used in a hydrogen fuel engine system.

[0026] Figure 8 The present invention is a schematic diagram of the planar structure of a three-way valve body and a positioning column in a three-way valve used in a hydrogen fuel engine system.

[0027] Fig. 9 The present invention is a partial upward structural schematic diagram of a three-way valve body and a mounting seat in a three-way valve used in a hydrogen fuel engine system.

[0028] Fig.10 The present invention is a front cross-sectional view of a valve plate in a three-way valve used in a hydrogen fuel engine system.

[0029] Fig.11 The figure is a schematic diagram of the back structure of a valve stem connecting block in a three-way valve used in a hydrogen fuel engine system.

[0030] Fig.12 The diagram is a front structural diagram of a valve stem connection block in a three-way valve used in a hydrogen fuel engine system.

[0031] 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. valve plate; 8. embedded seal; 9. sealing ring; 10. bushing; 11. screw; 12. valve stem connecting block; 13. retaining ring; 14. mounting sleeve; 15. first pin shaft; 16. second pin shaft; 17. transmission half gear; 18. first gear set; 19. second gear set; 20. gear fixing pin; 21. valve stem; 22. skeleton sealing ring; 23. spring; 24. magnetic steel; 25. moving bearing; 26. driving motor; 27. driving gear; 28. third pin shaft; 29. ​​positioning column; 30. first sealing inclined surface; 31. valve stem fixing hole; 32. second sealing inclined surface; 33. vulcanized rubber layer; 34. moving bearing mounting groove; 35. first fixing hole; 36. valve stem connecting hole. DETAILED DESCRIPTION

[0032] 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.

[0033] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0034] like Figure 1-Figure 12 As shown, a three-way valve for a hydrogen fuel engine system provided by an embodiment of the utility model includes 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, and the lower part of the three-way valve body 1 is detachably connected with a main passage 6. It can be understood that the main passage 6 and the three-way valve body 1 are reliably connected together by bolts and screw holes. The above technical features are all mature existing technologies, which are technical solutions that are not difficult to obtain or think of by technical personnel in this field, and technical personnel in this field can make corresponding adjustments and selections based on the above technical solutions.

[0035] The upper part of the three-way valve body 1 is provided with a fixed end face 4, and the surface of the fixed end face 4 is detachably connected with a mounting seat 3, the mounting seat 3 is a special-shaped structure, and preferably, the mounting seat 3 is processed by integral injection molding, and the mounting seat 3 is a carrier of the transmission structure for driving the valve stem 21 to move in the present application, and it serves as a mounting platform;

[0036] A bushing 10 is arranged inside the three-way valve body 1, and a valve stem 21 is arranged inside the bushing 10, the outer diameter of the valve stem 21 is the same as the inner diameter of the bushing 10, and the valve stem 21 can move vertically up and down smoothly inside the bushing 10, one side of the surface of the valve stem 21 is connected to a valve plate 7, a spring 23 is installed on the surface of the valve plate 7, and the end of the spring 23 away from the valve plate 7 is connected to the inside of the three-way valve body 1;

[0037] A driving motor 26 is installed on the side of the mounting seat 3, a motor mounting groove is opened on the side of the mounting seat 3, and the driving motor 26 is installed inside the motor mounting groove, and a driving gear 27 is installed on the output end of the driving motor 26, a second gear set 19 and a first gear set 18 are installed inside the mounting seat 3, a first pin shaft 15 is installed on the surface of the mounting seat 3, and a mounting sleeve 14 is sleeved on the outer side of the first pin shaft 15, a transmission half gear 17 is installed on the outer side of the mounting sleeve 14, and a retaining spring 13 is installed between the mounting sleeve 14 and the first pin shaft 15;

[0038] The second gear set 19 is composed of a first spur gear and a first bevel gear, the first gear set 18 is composed of a second bevel gear and a second spur gear, and the outer diameter of the first spur gear is larger than the outer diameter of the first bevel gear, and the outer diameter of the second bevel gear is larger than the outer diameter of the second spur gear, a third pin shaft 28 is installed on the outer side of the mounting seat 3, and the first spur gear of the second gear set 19 is installed on the third pin shaft 28, a gear fixing pin 20 is installed inside the mounting seat 3, and the second bevel gear of the first gear set 18 is installed on the gear fixing pin 20, the driving gear 27 is meshed and connected with the first spur gear, the first bevel gear is meshed and connected with the second bevel gear, and the second spur gear is meshed and connected with the transmission half gear 17;

[0039] A valve stem connecting block 12 is detachably connected to a position on the surface of the valve stem 21 away from the valve plate 7, and a moving bearing mounting groove 34 is provided on the surface of the valve stem connecting block 12, and a moving bearing 25 is mounted inside the moving bearing mounting groove 34, and the shape of the moving bearing mounting groove 34 is matched with the shape of the moving bearing 25, and the upper and lower sides of the inside of the moving bearing mounting groove 34 are straight sides, and the side sides are arc sides, and the inside of the moving bearing 25 is connected to a second pin shaft 16, and the end of the second pin shaft 16 away from the moving bearing 25 is connected to the transmission half gear 17.

[0040] In one embodiment of the present invention, please refer to Figure 3 and Figure 4When the main passage 6 is in an open state and the bypass passage 2 is in a closed state, the drive motor 26 can be turned on, and the output end of the drive motor 26 drives the driving gear 27 to rotate, and the driving gear 27 drives the second gear set 19 meshing with it to rotate through the third pin shaft 28, and the second gear set 19 drives the first gear set 18 meshing with it to rotate, so that the first gear set 18 drives the transmission half gear 17 and the mounting sleeve 14 to rotate through the first pin shaft 15. It can be understood that while the transmission half gear 17 rotates, When the valve disc 7 is in this position, the second pin shaft 16 and the moving bearing 25 will rotate inside the valve stem connecting block 12, and because the moving bearing 25 and the first pin shaft 15 are set in an eccentric state, the valve stem connecting block 12 will move vertically upward with the valve stem 21, and the valve stem 21 will drive the valve plate 7 to lift upward, thereby separating the lower end surface of the valve plate 7 from the main passage 6, and the upper end surface of the valve plate 7 is in contact with 30 inside the three-way valve body 1. When the valve plate 7 is in this position, the main passage 6 is in an open state and the bypass passage 2 is in a closed state.

[0041] Through the above technical solution, the drive motor 26 and the transmission components driven by the drive motor 26 can be integrated on the mounting base 3, which can reduce the volume of the entire transmission structure and greatly improve the degree of integration. In addition, by converting the rotational motion of the moving bearing 25 on the transmission half gear 17 into the linear motion of the valve stem 21 driven by the valve stem connecting block 12, the valve stem 21 can move smoothly inside the bushing 10, reducing the friction between the valve stem 21 and the three-way valve body 1, thereby increasing the service life of the three-way valve used in the hydrogen fuel engine system.

[0042] In this embodiment, a first fixing hole 35 is provided on the side of the valve stem connecting block 12, a valve stem connecting hole 36 is provided on the surface of the valve stem connecting block 12, and a second fixing hole is provided on the surface of the valve stem 21. The valve stem 21 is penetrated inside the valve stem connecting hole 36, and a screw 11 is penetrated inside the first fixing hole 35 and the second fixing hole. The valve stem 21 and the valve stem connecting block 12 are detachably connected together through the cooperation of the screw 11, the first fixing hole 35 and the second fixing hole. Through this connection method, the valve stem 21 can be conveniently assembled or disassembled on the valve stem connecting block 12, thereby improving the assembly efficiency and maintenance and disassembly efficiency of the three-way valve used in the hydrogen fuel engine system.

[0043] In the present embodiment, the three-way valve body 1 and the main passage 6, and the fixed end face 4 and the mounting seat 3 are detachably connected together by bolt and screw hole connection, and a sealing ring 9 is arranged between the three-way valve body 1 and the main passage 6, a skeleton sealing ring 22 is installed inside the three-way valve body 1, and the valve stem 21 is penetrated inside the skeleton sealing ring 22, 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, preventing the gas entering the inside of the three-way valve body 1 from entering the transmission area, and the sealing performance between the three-way valve body 1 and the main passage 6 can be improved by the sealing ring 9.

[0044] In this embodiment, a first sealing bevel 30 is provided inside the three-way valve body 1, a second sealing bevel 32 is provided on the surface of the valve plate 7, and the shape of the second sealing bevel 32 matches the shape of the first sealing bevel 30, a valve stem fixing hole 31 is provided on the surface of the valve plate 7, and the valve stem 21 is penetrated through the inside of the valve stem fixing hole 31, and a vulcanized rubber layer 33 is sleeved on the outer side of the valve plate 7. By providing the vulcanized rubber layer 33, the valve plate 7 can be more fully fitted with the three-way valve body 1 or the main passage 6 and the sealing effect is better.

[0045] In this embodiment, an embedded seal 8 is provided inside the main passage 6 near the three-way valve body 1, and the embedded seal 8 cooperates with the vulcanized rubber layer 33 on the valve plate 7 to form a bevel seal, thereby ensuring the sealing performance between the valve plate 7 and the main passage 6.

[0046] In this embodiment, a plurality of positioning columns 29 are provided on the surface of the fixed end face 4, and the positioning columns 29 are used to limit the position of the mounting seat 3, so that when the mounting seat 3 is fixed on the fixed end face 4, the position of the mounting seat 3 on the fixed end face 4 can be locked, thereby improving the installation accuracy and installation efficiency.

[0047] In this embodiment, a magnetic steel 24 is installed on the outer side of the valve stem connection block 12, and a control board is installed on the surface of the mounting seat 3, and the control board drives the chip;

[0048] By cooperating with the magnetic steel 24 and the chip on the control board, the movement stroke of the valve stem 21 can be detected and fed back, thereby reflecting the opening degree of the main passage 6.

[0049] 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 three-way valve for a hydrogen fuel engine system, comprising a three-way valve body (1), wherein 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), and a main passage (6) is detachably connected to the lower part of the three-way valve body (1), characterized in that: The upper part of the three-way valve body (1) is provided with a fixed end surface (4), and the surface of the fixed end surface (4) is detachably connected with a mounting seat (3); The three-way valve body (1) is provided with a bushing (10) inside, and a valve stem (21) is provided inside the bushing (10), one side of the surface of the valve stem (21) is connected to a valve plate (7), a spring (23) is installed on the surface of the valve plate (7), and one end of the spring (23) away from the valve plate (7) is connected to the inside of the three-way valve body (1); A driving motor (26) is installed on the side of the mounting seat (3), and a driving gear (27) is installed on the output end of the driving motor (26); a second gear set (19) and a first gear set (18) are installed inside the mounting seat (3); a first pin shaft (15) is installed on the surface of the mounting seat (3), and a mounting sleeve (14) is sleeved on the outer side of the first pin shaft (15); a transmission half gear (17) is installed on the outer side of the mounting sleeve (14); and a retaining spring (13) is installed between the mounting sleeve (14) and the first pin shaft (15); A valve stem connecting block (12) is detachably connected to the surface of the valve stem (21) at a position away from the valve plate (7), and a moving bearing mounting groove (34) is provided on the surface of the valve stem connecting block (12). A moving bearing (25) is mounted inside the moving bearing mounting groove (34), and a second pin shaft (16) is connected inside the moving bearing (25), and one end of the second pin shaft (16) away from the moving bearing (25) is connected to the transmission half gear (17).

2. A three-way valve for a hydrogen fuel engine system according to claim 1, characterized in that: The second gear set (19) is composed of a first spur gear and a first bevel gear, the first gear set (18) is composed of a second bevel gear and a second spur gear, the outer diameter of the first spur gear is larger than the outer diameter of the first bevel gear, the outer diameter of the second bevel gear is larger than the outer diameter of the second spur gear, a third pin shaft (28) is installed on the outer side of the mounting seat (3), and the first spur gear of the second gear set (19) is installed on the third pin shaft (28), a gear fixing pin (20) is installed inside the mounting seat (3), and the second bevel gear of the first gear set (18) is installed on the gear fixing pin (20), the driving gear (27) is meshedly connected with the first spur gear, the first bevel gear is meshedly connected with the second bevel gear, and the second spur gear is meshedly connected with the transmission half gear (17).

3. A three-way valve for a hydrogen fuel engine system according to claim 1, characterized in that: A first fixing hole (35) is provided on the side of the valve stem connecting block (12), a valve stem connecting hole (36) is provided on the surface of the valve stem connecting block (12), and a second fixing hole is provided on the surface of the valve stem (21). The valve stem (21) is penetrated through the inside of the valve stem connecting hole (36), and a screw (11) is penetrated through the inside of the first fixing hole (35) and the second fixing hole. The valve stem (21) and the valve stem connecting block (12) are detachably connected together by the cooperation of the screw (11), the first fixing hole (35) and the second fixing hole.

4. A three-way valve for a hydrogen fuel engine system according to claim 1, characterized in that: The three-way valve body (1) and the main passage (6), and the fixed end surface (4) and the mounting seat (3) are detachably connected together by bolt and screw hole connection, and a sealing ring (9) is arranged between the three-way valve body (1) and the main passage (6), a skeleton sealing ring (22) is installed inside the three-way valve body (1), and the valve stem (21) is arranged to penetrate inside the skeleton sealing ring (22).

5. A three-way valve for a hydrogen fuel engine system according to claim 1, characterized in that: The interior of the three-way valve body (1) is provided with a first sealing bevel (30), the surface of the valve plate (7) is provided with a second sealing bevel (32), and the shape of the second sealing bevel (32) matches the shape of the first sealing bevel (30), the surface of the valve plate (7) is provided with a valve stem fixing hole (31), and the valve stem (21) is arranged through the interior of the valve stem fixing hole (31), and the outer side of the valve plate (7) is sleeved with a vulcanized rubber layer (33).

6. A three-way valve for a hydrogen fuel engine system according to claim 5, characterized in that: An embedded seal (8) is provided inside the main passage (6) near the three-way valve body (1), and the embedded seal (8) cooperates with the vulcanized rubber layer (33) on the valve plate (7) to form a bevel seal.

7. A three-way valve for a hydrogen fuel engine system according to claim 1, characterized in that: A plurality of positioning columns (29) are arranged on the surface of the fixed end surface (4), and the positioning columns (29) are used to define the position of the mounting seat (3).

8. A three-way valve for a hydrogen fuel engine system according to claim 1, characterized in that: A magnetic steel (24) is installed on the outer side of the valve stem connecting block (12).

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