Anti-surge valve

Abstract

The utility model relates to the technical field of engines, in particular to an anti-surge valve. The anti-surge valve comprises a valve body and a valve element assembly, the valve body is provided with a cavity, an air inlet and a pressure relief opening, the air inlet and the pressure relief opening are communicated with the cavity, the air inlet is formed in the bottom wall of the valve body, and the pressure relief opening is formed in the side wall of the valve body; the valve element assembly comprises a base, a first elastic piece and a second elastic piece, the base is arranged in the cavity in a sliding mode and divides the cavity into a first cavity body and a second cavity body, the first cavity body is communicated with the air inlet, and the first elastic piece and the second elastic piece are both arranged in the second cavity body. One end of the first elastic piece and one end of the second elastic piece are arranged on the side, away from the first cavity, of the second cavity, the other end of the first elastic piece is connected with the base, and when the valve element assembly is in the initial state, a gap exists between the other end of the second elastic piece and the base. According to the pressure relief valve, the impact of the valve element on the valve seat can be reduced, and pressure can be quickly relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an anti-surge valve. Background Art

[0002] An anti-surge valve is a device used in turbochargers to prevent surge. When the accelerator is released, the anti-surge valve needs to quickly release pressure. During this rapid pressure release, the valve core in the anti-surge valve will quickly fall back, impacting the valve seat and generating loud noise. It will also cause wear on the valve core, reducing its service life. Utility Model Content

[0003] In view of this, an embodiment of the present invention provides an anti-surge valve, which can reduce the impact of the valve core on the valve seat and can also quickly release pressure.

[0004] In a first aspect, the anti-surge valve provided by an embodiment of the present invention includes a valve body and a valve core assembly, the valve body having a cavity, and an air inlet and a pressure relief port connected to the cavity, the air inlet being arranged on the bottom wall of the valve body, and the pressure relief port being arranged on the side wall of the valve body; the valve core assembly includes a base, a first elastic member and a second elastic member, the base being slidably arranged in the cavity, the base dividing the cavity into a first cavity and a second cavity, the first cavity being connected to the air inlet, the first elastic member and the second elastic member being both arranged in the second cavity, one end of the first elastic member and one end of the second elastic member being both arranged on a side of the second cavity away from the first cavity, and the other end of the first elastic member being connected to the base, wherein when the valve core assembly is in an initial state, there is a gap between the other end of the second elastic member and the base.

[0005] In the anti-surge valve of the present application, in an initial state, a gap exists between the base and the other end of the second elastic member. This allows for pressure relief when gas enters the first chamber through the air inlet. The base, under the action of the air pressure, moves and compresses the first elastic member. Before the base moves to a position corresponding to the pressure relief port, the base only overcomes the elastic force generated by the first elastic member, allowing gas to quickly pass through the air inlet, the first chamber, and be discharged through the pressure relief port, thereby achieving rapid pressure relief. Under the action of the air pressure, the base continues to exert force on the first elastic member, causing it to continue to compress. When the base contacts the second elastic member and compresses it, the base's movement speed slows under the action of the first and second elastic members. When the air pressure decreases, the base begins to be acted upon by the combined elastic forces of the first and second elastic members, rapidly moving toward its initial position. When the second elastic member separates from the base, the base is acted upon only by the first elastic member, slowing its movement toward its initial position. This reduces the force exerted by the base against the valve seat, reduces noise generated between the base and the valve seat, and improves the service life of both the base and the valve seat.

[0006] In one embodiment, the pressure relief port is arranged on the side wall of the cavity, and the air inlet is arranged on the bottom wall of the cavity. When the valve core assembly is in the initial state, the other end of the second elastic member extends to the pressure relief port. It can be understood that the gap between the other end of the second elastic member and the base is larger than the gap between the pressure relief port and the base.

[0007] In one embodiment, the second elastic member is sleeved on the first elastic member.

[0008] In one embodiment, a center line of the first elastic member coincides with a center line of the second elastic member.

[0009] In one embodiment, the valve core assembly further includes a telescopic bracket, which is disposed in the second cavity, one end of the telescopic bracket is disposed on the base, and the other end of the telescopic bracket is fixed to a side of the second cavity away from the first cavity, and the second elastic member is disposed in the telescopic bracket.

[0010] In one embodiment, the telescopic bracket includes a first tube body and a second tube body, one end of the first tube body is fixed to the base, one end of the second tube body is fixed to the inner wall of the second cavity, the other end of the first tube body is passed through the other end of the second tube body, and the other end of the first tube body can move relative to the second tube body, one end of the second elastic member is located in the second tube body, and the other end of the second elastic member is located in the first tube body.

[0011] In one embodiment, the first elastic member and the second elastic member are both springs.

[0012] In one embodiment, the valve core assembly further includes at least one third elastic member, the length of the third elastic member is smaller than the length of the second elastic member, and one end of the third elastic member and one end of the second elastic member are both arranged on a side of the second cavity away from the first cavity.

[0013] In one embodiment, there is one third elastic member, and both the third elastic member and the second elastic member are sleeved on the first elastic member, and the third elastic member and the second elastic member are spaced apart.

[0014] In one embodiment, there is one third elastic member, the third elastic member is sleeved on the second elastic member, and a center line of the third elastic member coincides with a center line of the second elastic member.

[0015] In a second aspect, the present application provides a vehicle comprising the anti-surge valve according to any technical solution of the first aspect. The beneficial effects produced by the vehicle are the same as those of the anti-surge valve, and will not be further described here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional view of an anti-surge valve provided in an embodiment of the present utility model;

[0017] Figure 2 Another cross-sectional view of the anti-surge valve provided in an embodiment of the present utility model.

[0018] Icon: 10-valve body; 11-cavity; 110-first cavity; 111-second cavity; 12-air inlet; 20-base; 30-first elastic member; 40-second elastic member; 50-telescopic bracket; 51-first tube; 52-second tube. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The anti-surge valve provided by the embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.

[0021] Figure 1 A cross-sectional view of an anti-surge valve provided in an embodiment of the present utility model; Figure 2 Another cross-sectional view of the anti-surge valve provided in an embodiment of the present utility model. Figure 1 The first direction is the moving direction of the base 20, refer to Figure 1and Figure 2 , including a valve body 10 and a valve core assembly, the valve body 10 has a cavity 11, and an air inlet 12 and a pressure relief port connected to the cavity 11, the air inlet 12 is arranged on the bottom wall of the valve body 10, and the pressure relief port is arranged on the side wall of the valve body 10; the valve core assembly includes a base 20, a first elastic member 30 and a second elastic member 40, the base 20 is slidably arranged in the cavity 11, the base 20 divides the cavity 11 into a first cavity 110 and a second cavity 111, the first cavity 110 is connected to the air inlet 12, the first elastic member 30 and the second elastic member 40 are both arranged in the second cavity 111, one end of the first elastic member 30 and one end of the second elastic member 40 are both arranged on the side of the second cavity 111 away from the first cavity 110, and the other end of the first elastic member 30 is connected to the base 20, wherein, when the valve core assembly is in an initial state, there is a gap between the other end of the second elastic member 40 and the base 20, and the second cavity 111 is connected to the pressure relief port.

[0022] In the initial state of the anti-surge valve of this application, a gap exists between the base 20 and the other end of the second elastic member 40. This allows for pressure relief when gas enters the first chamber 110 through the air inlet 12. Under the action of the air pressure, the base 20 moves in a first direction and compresses the first elastic member 30. Before the base 20 reaches the position corresponding to the pressure relief port, the base 20 only overcomes the elastic force generated by the first elastic member 30, resulting in a smaller elastic force being overcome when the base 20 moves this distance. This allows the base 20 to quickly move to the position corresponding to the pressure relief port, ensuring that gas quickly passes through the air inlet 12, the first chamber 110, and is discharged from the pressure relief port, achieving rapid pressure relief. Under the action of the air pressure, the base 20 continues to exert force on the first elastic member 30, causing it to continue to compress. When the base 20 contacts the second elastic member 40, causing it to be compressed, the base 20's movement speed slows down under the action of the first and second elastic members 30, 40. When the air pressure decreases, the base returns, and the base 20 begins to be acted upon by the combined elastic force of the first elastic member 30 and the second elastic member 40, and moves rapidly to its initial position. When the second elastic member 40 separates from the base 20, the base 20 is only acted upon by the first elastic member 30, so that the movement speed of the base 20 to its initial position becomes slower, thereby reducing the force of the base 20 impacting the valve seat, reducing the noise generated between the base 20 and the valve seat, and also increasing the service life of the base 20 and the valve seat.

[0023] In the above embodiment, the pressure relief port can be provided on the side wall of the cavity 11, and the air inlet 12 is provided on the bottom wall of the cavity 11. When the valve core assembly is in the initial state, the other end of the second elastic member 40 extends to the pressure relief port. It can be understood that the gap between the other end of the second elastic member 40 and the base 20 is larger than the gap between the pressure relief port and the base 20. In this way, when pressure relief is required, the base 20 in the valve core assembly is compressed under the action of gas pressure and only compresses the first elastic member 30 before moving to the pressure relief port. This results in less resistance to the base 20 moving to the pressure relief port, and the base 20 can move quickly to the pressure relief port, thereby achieving a rapid pressure relief effect.

[0024] There are many ways to arrange the second elastic member 40 and the first elastic member 30, such as: the first elastic member 30 and the second elastic member 40 are arranged side by side, or the second elastic member 40 is sleeved in the first elastic member 30. Figure 1 and Figure 2 , taking the second elastic member 40 being sleeved in the first elastic member 30 as an example for explanation, the second elastic member 40 being sleeved in the first elastic member 30 can reduce the space occupied by the second elastic member 40 and the first elastic member 30, thereby reducing the size of the anti-surge valve. In addition, compared with the prior art method of providing a first elastic member 30, the second elastic member 40 does not occupy extra space, so there is no need to improve the structure of the valve body 10.

[0025] It is worth noting that the centerline of the first elastic member 30 coincides with the centerline of the second elastic member 40. This allows the base 20 to move at a relatively uniform speed across its various components when subjected to gas pressure, further enhancing the stability of the base 20 when subjected to gas pressure. Furthermore, the first elastic member 30 has a lower stiffness than the second elastic member 40.

[0026] In the above-described embodiment, the valve core assembly further includes a telescopic bracket 50 disposed within the second cavity 111. One end of the telescopic bracket 50 is mounted on the base 20, and the other end is fixed to the side of the second cavity 111 away from the first cavity 110. The second elastic member 40 is disposed within the telescopic bracket 50. The provision of the telescopic bracket 50 separates the first elastic member 30 and the second elastic member 40, thereby preventing interference between the first elastic member 30 and the second elastic member 40 during compression or restoration. Furthermore, the telescopic bracket 50 is capable of extending and retracting with the movement of the base 20, thereby ensuring stable operation of the base 20.

[0027] Specifically, the telescopic bracket 50 includes a first tube 51 and a second tube 52. One end of the first tube 51 is fixed to the base 20, and one end of the second tube 52 is fixed to the inner wall of the second cavity 111. The other end of the first tube 51 passes through the other end of the second tube 52 and is movable relative to the second tube 52. One end of the second elastic member 40 is located within the second tube 52, and the other end of the second elastic member 40 is located within the first tube 51. When the base 20 moves under the pressure of the gas, the first tube 51 moves within the second tube 52, and the outer diameter of the first tube 51 is smaller than the inner diameter of the second tube 52. The first tube 51 can be integrally formed with the base 20, and both the first tube 51 and the second tube 52 are perpendicular to the base 20.

[0028] In some other embodiments, the outer diameter of the second tube 52 may also be smaller than the inner diameter of the first tube 51 .

[0029] In one embodiment, the valve core assembly may further include a third elastic member, at least one of which is shorter than the second elastic member 40. One end of the third elastic member and one end of the second elastic member 40 are both located on a side of the second cavity 111 away from the first cavity 110. When pressure relief is required, the base 20 in the valve core assembly, under the action of gas pressure, first compresses the first elastic member 30, then the second elastic member 40, and finally the third elastic member. This method not only achieves rapid pressure relief, but also allows the third elastic member to separate from the base 20 after pressure relief is complete, first reducing the elastic force acting on the base 20 by a first portion. Then, the second elastic member 40 separates from the base 20, further reducing the elastic force acting on the base 20 by a further portion. At this point, the base 20 is only acted upon by the first elastic member 30, slowing its movement toward its initial position. This reduces the force exerted by the base 20 on the valve seat, reduces noise generated between the base 20 and the valve seat, and improves the service life of the base 20 and the valve seat.

[0030] In one embodiment, the third elastic member can be one, and the arrangement of the third elastic member and the second elastic member 40 can be various, such as: the third elastic member and the second elastic member 40 are both arranged in the first elastic member 30, and the third elastic member and the second elastic member 40 are arranged at intervals, or the center line of the third elastic member and the center line of the second elastic member 40 coincide with each other.

[0031] In the above embodiment, the first elastic member 30, the second elastic member 40 and the third elastic member can all be springs. In addition, the valve core assembly can further include a fourth elastic member and a fifth elastic member.

[0032] The present application also provides a vehicle, which includes the anti-surge valve in any of the above embodiments.

[0033] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An anti-surge valve, characterized in that: include: a valve body having a cavity, and an air inlet and a pressure relief port communicated with the cavity, wherein the air inlet is provided on the bottom wall of the valve body, and the pressure relief port is provided on the side wall of the valve body; The valve core assembly includes a base, a first elastic member and a second elastic member. The base is slidably arranged in the cavity. The base divides the cavity into a first cavity and a second cavity. The first cavity is connected to the air inlet. The first elastic member and the second elastic member are both arranged in the second cavity. One end of the first elastic member and one end of the second elastic member are both arranged on a side of the second cavity away from the first cavity. The other end of the first elastic member is connected to the base, wherein When the valve core assembly is in an initial state, there is a gap between the other end of the second elastic member and the base.

2. The anti-surge valve according to claim 1, wherein: When the valve core assembly is in an initial state, a gap between the other end of the second elastic member and the base is larger than a gap between the pressure relief port and the base.

3. The anti-surge valve according to claim 1, wherein: The second elastic member is sleeved on the first elastic member.

4. The anti-surge valve according to claim 3, wherein: A center line of the first elastic member coincides with a center line of the second elastic member.

5. The anti-surge valve according to any one of claims 1 to 4, characterized in that: The valve core assembly also includes a telescopic bracket, which is arranged in the second cavity, one end of the telescopic bracket is arranged on the base, and the other end of the telescopic bracket is fixed to a side of the second cavity away from the first cavity, and the second elastic member is arranged in the telescopic bracket.

6. The anti-surge valve according to claim 5, characterized in that: The telescopic bracket includes a first tube body and a second tube body, one end of the first tube body is fixed to the base, one end of the second tube body is fixed to the inner wall of the second cavity, the other end of the first tube body is passed through the other end of the second tube body, and the other end of the first tube body can move relative to the second tube body, one end of the second elastic member is located in the second tube body, and the other end of the second elastic member is located in the first tube body.

7. The anti-surge valve according to claim 1, wherein: The first elastic member and the second elastic member are both springs.

8. The anti-surge valve according to claim 1, wherein: The valve core assembly further includes at least one third elastic member, the length of the third elastic member is smaller than that of the second elastic member, and one end of the third elastic member and one end of the second elastic member are both arranged on a side of the second cavity away from the first cavity.

9. The anti-surge valve according to claim 8, wherein: There is one third elastic member, and both the third elastic member and the second elastic member are sleeved on the first elastic member, and the third elastic member and the second elastic member are spaced apart.

10. The anti-surge valve according to claim 8, wherein: There is one third elastic member, which is sleeved on the second elastic member, and a center line of the third elastic member coincides with a center line of the second elastic member.

Images