Gas injection valve, power system and vehicle

Abstract

The invention belongs to the technical field of vehicles, and discloses a gas injection valve, a power system and a vehicle. The gas injection valve comprises a valve shell and a limiting valve body, the two ends of the valve shell are provided with an end cover and a gas inlet respectively, an electromagnet, an armature, a control valve seat and a flow channel valve body are arranged in the valve shell, the end cover is arranged on the periphery of the electromagnet, the end cover is in threaded connection with the valve shell, and the electromagnet can be driven to move in the direction close to the gas inlet by rotating the end cover; the limiting valve body is arranged in an inner cavity of the valve shell, one end of the limiting valve body abuts against the electromagnet, an elastic piece is arranged between the other end of the limiting valve body and the control valve seat, and the elastic piece is in a compressed state all the time, so that the limiting valve body tends to move in the direction away from the air inlet all the time. The gas ejector is provided with the limiting valve body, and the position of the limiting valve body in the inner cavity of the valve shell is controlled through the end cover and the elastic piece, so that the distance between the control valve seat and the runner valve body is adjusted, the flow is adjusted, and the adjustment is convenient.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a gas injection valve, a power system and a vehicle. Background Art

[0002] As a key component in the hydrogen circulation system, the gas injection valve for fuel cells delivers gas into the gas reactor at an appropriate flow rate. The performance of the valve directly determines the efficiency of the hydrogen circulation system, which in turn affects the performance and reliability of the fuel cell system. After the design and processing of the hydrogen injector in the prior art is completed, the position of the moving valve core assembly is fixed, resulting in a fixed flow rate of the hydrogen injection valve, which cannot be adjusted according to actual conditions. If flow adjustment is required, the valve needs to be disassembled and the gasket needs to be replaced. The above steps need to be repeated until the flow rate meets the requirements, which invisibly increases labor costs.

[0003] Therefore, a gas injection valve is needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a gas injection valve, a power system and a vehicle, which can conveniently adjust the flow of the gas injection valve, improve the adjustment efficiency, have a large adjustment range and have high versatility.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A gas injection valve, comprising:

[0007] A valve housing, wherein end covers and air inlets are respectively provided at both ends of the valve housing, an electromagnet, an armature, a control valve seat and a flow channel valve body are sequentially provided between the end cover and the air inlet, the armature and the control valve seat are fixedly connected, a return elastic member is provided between the electromagnet and the control valve seat, the electromagnet limiter is provided on the end cover, the end cover is threadedly connected to the valve housing, and rotating the end cover can drive the electromagnet to move in a direction close to the air inlet;

[0008] A limit valve body is arranged in the inner cavity of the valve housing, one end of the limit valve body is in contact with the electromagnet, an elastic member is arranged between the other end of the limit valve body and the control valve seat, and the elastic member is always in a compressed state, so that the limit valve body has a tendency to always move in a direction away from the air inlet.

[0009] As an optional technical solution, the limit valve body is provided with a first accommodating chamber, the first accommodating chamber is used to accommodate the armature, and the side wall of the first accommodating chamber is in contact with the electromagnet.

[0010] As an optional technical solution, the limit valve body is provided with a second accommodating chamber, the first accommodating chamber and the second accommodating chamber are connected through a channel, the control valve seat includes a connecting rod and a control valve, the connecting rod is slidably arranged in the channel, one end of the connecting rod is fixedly connected to the armature, the control valve can abut against the flow channel valve body, and the second accommodating chamber is used to accommodate the elastic member, and the two ends of the elastic member respectively abut against the control valve and the bottom of the second accommodating chamber.

[0011] As an optional technical solution, the limit valve body is also provided with an abutment groove, which is arranged at one end of the second accommodating cavity away from the first accommodating cavity, and the bottom of the abutment groove can abut against the end face of the control valve away from the flow channel valve body.

[0012] As an optional technical solution, the return elastic member is a return spring, the electromagnet is provided with a first spring seat, the armature and the control valve seat are provided with a second spring seat on the side away from the flow channel valve body, and the two ends of the return spring are respectively abutted against the first spring seat and the second spring seat.

[0013] As an optional technical solution, an abutment platform is provided on the outer periphery of the electromagnet, and a part of the structure of the end cover abuts against the abutment platform, so that the end cover can drive the electromagnet to move toward the air inlet.

[0014] As an optional technical solution, a limiting platform is provided in the inner cavity of the valve housing, and the limiting platform can abut against an end of the limiting valve body away from the electromagnet.

[0015] As an optional technical solution, a seal is provided between the end cover and the electromagnet.

[0016] The present invention also adopts the following technical solutions:

[0017] A power system comprising the gas injection valve as described above.

[0018] The present invention also adopts the following technical solutions:

[0019] A vehicle comprising the power system as described above.

[0020] Beneficial effects of the present invention:

[0021] The present invention discloses a gas injection valve, which comprises a valve housing and a limit valve body, wherein end covers and air inlets are respectively arranged at two ends of the valve housing, an electromagnet, an armature, a control valve seat and a flow channel valve body are arranged in sequence between the end cover and the air inlet, the armature and the control valve seat are fixedly connected, and a return elastic member is arranged between the electromagnet and the control valve seat; the electromagnet limiter is arranged on the end cover, and the end cover is threadedly connected to the valve housing, and rotating the end cover can drive the electromagnet to move in a direction close to the air inlet; the limit valve body is arranged in the inner cavity of the valve housing, one end of the limit valve body abuts against the electromagnet, and an elastic member is arranged between the other end of the limit valve body and the control valve seat, and the elastic member is always in a compressed state, so that the limit valve body has a tendency to always move in a direction away from the air inlet. During the use of this gas injection valve, when the flow rate needs to be reduced, the end cover is rotated inward along the axial direction of the valve housing, so that the electromagnet moves in the direction close to the air inlet, thereby driving the limit valve body to move in the same direction, so that the gap between the limit valve body and the control valve seat becomes smaller, and when the electromagnet attracts the armature, the moving range of the control valve seat is reduced, thereby increasing the throttling effect and reducing the flow rate. When the flow rate needs to be increased, the end cover is rotated inward along the axial direction of the valve housing. Since an elastic member that is always in a compressed state is provided between the limit valve body and the control valve seat, the elastic member can push the limit valve body to move in the direction away from the air inlet, so that the limit valve body always contacts the electromagnet, which can ensure that the armature attraction distance remains unchanged, thereby ensuring that the response time of the gas injection valve remains unchanged, and at the same time, the gap between the limit valve body and the control valve seat becomes larger, and when the electromagnet attracts the armature, the displacement of the control valve seat increases, thereby increasing the displacement of the flow channel valve body, thereby increasing the flow rate. This gas injection valve can adjust the flow rate by rotating the locking piece. The adjustment is convenient and efficient, and at the same time the response time is guaranteed, thereby improving the convenience of use.

[0022] The present invention also discloses a power system, which includes the above-mentioned gas injection valve. The performance of the power system can be easily adjusted, and the response time can be ensured, thereby improving the adjustment efficiency.

[0023] The present invention also discloses a vehicle, which includes the above-mentioned power system and can facilitate the adjustment of the jet flow, thereby improving the adjustment convenience of the system, ensuring convenience during use, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of a gas injection valve according to an embodiment of the present invention;

[0025] Figure 2 : is a position relationship diagram of a control valve seat and a limit valve body in an embodiment of the present invention;

[0026] Figure 3 1 is a positional relationship diagram of a control valve seat and a valve housing in an embodiment of the present invention.

[0027] In the figure:

[0028] 1. Valve housing; 101. Limiting platform; 2. End cover; 3. Air inlet; 4. Electromagnet; 401. First spring seat; 402. Second spring seat; 403. Abutment platform; 5. Armature; 6. Control valve seat; 601. Connecting rod; 602. Control valve; 7. Flow channel valve body; 8. Return elastic member; 9. Limiting valve body; 901. First accommodating chamber; 902. Second accommodating chamber; 903. Abutment groove; 10. Elastic member; 11. Sealing member. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] like Figures 1 to 3As shown, this embodiment provides a gas injection valve, which includes a valve housing 1, and end covers 2 and air inlets 3 are respectively provided at both ends of the valve housing 1, and an electromagnet 4, an armature 5, a control valve seat 6 and a flow channel valve body 7 are sequentially provided between the end cover 2 and the air inlet 3, the armature 5 and the control valve seat 6 are fixedly connected, and a return elastic member 8 is provided between the electromagnet 4 and the control valve seat 6, and the electromagnet 4 is limitedly provided on the end cover 2, and the end cover 2 is threadedly connected to the valve housing 1, and rotating the end cover 2 can drive the electromagnet 4 to move toward the direction close to the air inlet 3; it also includes a limit valve body 9, which is provided in the inner cavity of the valve housing 1, one end of the limit valve body 9 is abutted against the electromagnet 4, and an elastic member 10 is provided between the other end of the limit valve body 9 and the control valve seat 6, and the elastic member 10 is always in a compressed state, so that the limit valve body 9 has a tendency to always move in the direction away from the air inlet 3.

[0034] Specifically, in this embodiment, the end cover 2 is threadedly connected to the valve housing 1, and the end cover 2 is arranged on the outer periphery of the electromagnet 4. Rotating the end cover 2 can drive the electromagnet 4 to move in the direction close to the air inlet 3. The armature 5 and the control valve seat 6 are fixedly connected. A limit valve body 9 is arranged between the control valve seat 6 and the electromagnet 4. One end of the limit valve body 9 abuts against the electromagnet 4, and a missing elastic member 10 in a compressed state is arranged between the other end and the control valve seat 6. When it is necessary to reduce the flow rate, the end cover 2 is rotated inward along the axial direction of the valve housing 1, so that the electromagnet moves in the direction close to the air inlet 3, thereby driving the limit valve body 9 to move in the same direction, so that the gap between the limit valve body 9 and the control valve seat 6 becomes smaller. When the electromagnet 4 attracts the armature 5, the moving range of the control valve seat 6 is reduced, thereby increasing the throttling effect and reducing the flow rate. When the flow rate needs to be increased, the end cover 2 is rotated inward along the axial direction of the valve housing 1. Since an elastic member 10 that is always in a compressed state is provided between the limit valve body 9 and the control valve seat 6, the elastic member 10 can push the limit valve body 9 to move in a direction away from the air inlet 3, so that the limit valve body 9 is always in contact with the electromagnet, which can ensure that the suction distance of the armature 5 remains unchanged, thereby ensuring that the response time of the gas injection valve remains unchanged. At the same time, the gap between the limit valve body 9 and the control valve seat 6 becomes larger. When the electromagnet 4 and the armature 5 are suctioned, the displacement of the control valve seat 6 increases, thereby increasing the displacement of the flow channel valve body 7, thereby increasing the flow rate. This gas injection valve can adjust the flow rate by rotating the locking member, which is convenient to adjust and has high adjustment efficiency. At the same time, it ensures the response time and improves the convenience of use.

[0035] Further, the limit valve body 9 is provided with a first accommodating chamber 901, the first accommodating chamber 901 is used to accommodate the armature 5, and the side wall of the first accommodating chamber 901 abuts against the electromagnet 4. Specifically, in this embodiment, the depth of the first accommodating chamber 901 is the sum of the thickness of the armature 5 and the stroke of the armature 5. Under the action of the elastic member 10, the side wall of the first accommodating chamber 901 always abuts against the electromagnet 4, which can ensure that the suction distance of the armature 5 is always consistent, ensure the response time of the gas injection valve, and ensure the suction effect of the electromagnet 4 and the armature 5.

[0036] For further information, please refer to Figure 2 The limit valve body 9 is provided with a second accommodating chamber 902, the first accommodating chamber 901 and the second accommodating chamber 902 are connected through a channel, the control valve seat 6 includes a connecting rod 601 and a control valve 602, the connecting rod 601 is slidably arranged in the channel, one end of the connecting rod 601 is fixedly connected to the armature 5, the control valve 602 can abut against the flow channel valve body 7, and the second accommodating chamber 902 is used to accommodate the elastic member 10, and the two ends of the elastic member 10 are respectively abutted against the control valve 602 and the bottom of the second accommodating chamber 902. Specifically, in the present embodiment, the first accommodating chamber 901 and the second accommodating chamber 902 are connected through a channel, and the control valve seat 6 includes a connecting rod 601 and a control valve 602. The connecting rod 601 is used to connect the armature 5, and the connecting rod 601 is slidably arranged in the channel, which can provide a certain guide for the connecting rod 601 to ensure the stability of the connecting rod 601 during movement. The elastic member 10 in the present embodiment is a spring, one end of the spring abuts against the control valve 602, and the other end abuts against the bottom of the second accommodating chamber 902. The spring is always in a compressed state, so that the limit valve body 9 can always have a movement tendency away from the control valve 602, so that the side wall of the first accommodating chamber 901 of the limit valve body 9 can always abut against the electromagnet 4, thereby ensuring the distance between the armature 5 and the electromagnet 4, thereby ensuring that the corresponding time always remains stable.

[0037] Furthermore, the limit valve body 9 is also provided with an abutment groove 903, which is provided at one end of the second accommodating chamber 902 away from the first accommodating chamber 901, and the bottom of the abutment groove 903 can abut against the end surface of the control valve 602 away from the flow channel valve body 7. Specifically, in this embodiment, when the electromagnet 4 attracts the armature 5, the armature 5 drives the connecting rod 601 and the control valve 602 to move upward, and the bottom of the abutment groove 903 abuts against the end surface of the control valve 602 away from the flow channel valve body 7, thereby limiting the control valve 602, ensuring that the opening of the control valve 602 is within a suitable range, and thus ensuring the use effect of the gas injection valve.

[0038] Further, the return elastic member 8 is a return spring, the electromagnet 4 is provided with a first spring seat 401, the armature 5 and the control valve seat 6 are provided with a second spring seat 402 on the side away from the flow channel valve body 7, and the two ends of the return spring are respectively in contact with the first spring seat 401 and the second spring seat 402. Specifically, in this embodiment, the electromagnet 4 is provided with a receiving groove, the first spring seat 401 is provided at the bottom of the receiving groove, the armature 5 and the control valve seat 6 are provided with a second spring seat 402 on the side away from the flow channel valve body 7, the first spring seat 401 and the second spring seat 402 are directly opposite, and the two ends of the return spring are respectively in contact with the first spring seat 401 and the second spring seat 402. The return spring is in a compressed state, and when the electromagnet 4 does not generate magnetism, the return spring can separate the armature 5 and the electromagnet 4, thereby causing the control valve 602 to abut against the flow channel valve body 7, and the gas injection valve is closed.

[0039] For further information, please refer to Figure 1 , the outer periphery of the electromagnet 4 is provided with an abutment platform 403, and part of the structure of the locking member abuts against the abutment platform 403, so that the locking member can drive the electromagnet 4 to move in a direction close to the air inlet 3. Specifically, in this embodiment, the end cover 2 is an annular structure, and the outer periphery of the electromagnet 4 is provided with an abutment platform 403, and the end cover 2 in an annular structure abuts against the abutment platform 403, so that rotating the end cover 2 can drive the electromagnet 4 to move and adjust the entry depth of the electromagnet 4.

[0040] In another embodiment, the end cover 2 is in an enclosing structure, and the electromagnet 4 is enclosed and disposed in the end cover 2. The position of the electromagnet 4 can also be adjusted, which will not be elaborated here.

[0041] Furthermore, if Figure 3 As shown, a limiting platform 101 is provided in the inner cavity of the valve housing 1, and the limiting platform 101 can abut against one end of the limiting valve body 9 away from the electromagnet 4. Specifically, in this embodiment, the limiting platform 101 can abut against one end of the limiting valve body 9 away from the electromagnet 4, thereby limiting the limiting valve body 9, avoiding that the electromagnet 4 cannot normally attract the armature 5 due to excessive displacement of the limiting valve body 9, thereby causing the gas injection valve to fail, thereby ensuring the normal operation of the gas injection valve.

[0042] Further, a seal 11 is provided between the end cover 2 and the electromagnet 4. Specifically, in this embodiment, a seal 11 is provided between the end cover 2 and the electromagnet 4 to prevent oil leakage.

[0043] The working process of this gas injection valve is described in detail below. When the flow rate needs to be reduced, the end cover 2 is rotated so that the electromagnet 4 moves in the direction close to the air inlet 3. The limit valve body 9 is close to the air inlet 3 under the action of the electromagnet 4, thereby reducing the distance between the abutment platform 403 of the limit valve body 9 and the control valve 602. When the electromagnet 4 attracts the armature 5, the control valve 602 moves a short distance and abuts against the abutment platform 403, thereby reducing the space between the control valve 602 and the flow channel valve body 7, thereby reducing the flow rate; when the flow rate needs to be increased, the end cover 2 is rotated so that the electromagnet 4 moves in the direction close to the air inlet 3. The magnet 4 moves in the direction away from the air inlet 3. A spring is arranged between the limit valve body 9 and the control valve 602. Under the action of the spring, the limit valve body 9 moves in the direction away from the air inlet 3 until the side wall of the first accommodating chamber 901 abuts against the electromagnet 4. At this time, the distance between the control valve 602 and the flow channel valve body 7 increases. When the electromagnet 4 attracts the armature 5, the control valve 602 moves a large distance and abuts against the abutment platform 403, thereby increasing the space between the control valve 602 and the flow channel valve body 7, thereby increasing the flow rate.

[0044] This embodiment also provides a power system, which includes the above-mentioned gas injection valve. The performance of this power system can be adjusted conveniently, and the response time can be ensured, thereby improving the adjustment efficiency.

[0045] This embodiment also provides a vehicle, which includes the above-mentioned power system, and can facilitate the adjustment of the jet flow, thereby improving the adjustment convenience of the system, ensuring convenience during use, and improving the user experience.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. 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 claims of the present invention.

Claims

1. A gas injection valve, characterized in that: The gas injection valve comprises: A valve housing (1), wherein both ends of the valve housing (1) are respectively provided with an end cover (2) and an air inlet (3), an electromagnet (4), an armature (5), a control valve seat (6) and a flow channel valve body (7) are sequentially provided between the end cover (2) and the air inlet (3), the armature (5) and the control valve seat (6) are fixedly connected, a return elastic member (8) is provided between the electromagnet (4) and the control valve seat (6), the electromagnet (4) is limitedly arranged on the end cover (2), the end cover (2) is threadedly connected to the valve housing (1), and rotating the end cover (2) can drive the electromagnet (4) to move in a direction close to the air inlet (3); A limit valve body (9), wherein the limit valve body (9) is arranged in the inner cavity of the valve housing (1), one end of the limit valve body (9) is in contact with the electromagnet (4), and an elastic member (10) is arranged between the other end of the limit valve body (9) and the control valve seat (6), and the elastic member (10) is always in a compressed state, so that the limit valve body (9) has a tendency to always move in a direction away from the air inlet (3).

2. The gas injection valve according to claim 1, characterized in that: The limit valve body (9) is provided with a first accommodating chamber (901), the first accommodating chamber (901) being used to accommodate the armature (5), and the side wall of the first accommodating chamber (901) abuts against the electromagnet (4).

3. The gas injection valve according to claim 2, characterized in that: The limit valve body (9) is provided with a second accommodating chamber (902), the first accommodating chamber (901) and the second accommodating chamber (902) are connected through a channel, the control valve seat (6) comprises a connecting rod (601) and a control valve (602), the connecting rod (601) is slidably arranged in the channel, one end of the connecting rod (601) is fixedly connected to the armature (5), the control valve (602) can abut against the flow channel valve body (7), and the second accommodating chamber (902) is used to accommodate the elastic member (10), and the two ends of the elastic member (10) are respectively abutted against the control valve (602) and the bottom of the second accommodating chamber (902).

4. The gas injection valve according to claim 3, characterized in that: The limit valve body (9) is also provided with an abutment groove (903), and the abutment groove (903) is arranged at one end of the second accommodating cavity (902) away from the first accommodating cavity (901), and the bottom of the abutment groove (903) can abut against the end face of the control valve (602) away from the flow channel valve body (7).

5. The gas injection valve according to any one of claims 1 to 4, characterized in that: The return elastic member (8) is a return spring, the electromagnet (4) is provided with a first spring seat (401), the armature (5) and the control valve seat (6) are provided with a second spring seat (402) on a side away from the flow channel valve body (7), and the two ends of the return spring are respectively in contact with the first spring seat (401) and the second spring seat (402).

6. The gas injection valve according to claim 5, characterized in that: An abutment platform (403) is provided on the outer periphery of the electromagnet (4), and a part of the structure of the end cover (2) abuts against the abutment platform (403), thereby enabling the end cover (2) to drive the electromagnet (4) to move in a direction close to the air inlet (3).

7. The gas injection valve according to claim 5, characterized in that: A limiting platform (101) is arranged in the inner cavity of the valve housing (1), and the limiting platform (101) can abut against an end of the limiting valve body (9) away from the electromagnet (4).

8. The gas injection valve according to claim 5, characterized in that: A sealing member (11) is provided between the end cover (2) and the electromagnet (4).

9. A power system, characterized in that: The power system comprises the gas injection valve according to any one of claims 1-8.

10. A vehicle, characterized in that The vehicle includes the power system of claim 9.

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