CN117662765A - Exhaust valve and engine - Google Patents

Abstract

The invention discloses an exhaust valve and an engine, and belongs to the technical field of engine equipment. The exhaust valve includes a valve body and an adjustment member. The valve comprises a valve body, wherein a first channel is arranged on the valve body, one port of the first channel is an air inlet, the air inlet is communicated with an engine combustion chamber, the other port of the first channel is an air outlet, and the air outlet is communicated with the external environment. The first channel is arranged in a straight line, and the air inlet and the air outlet are coaxial. The regulating part is connected with the valve body, and the regulating part is located inside the first channel, and the regulating part can rotate inside the first channel to regulate the flow of gas inside the first channel. The exhaust valve can reduce the impact force on the valve body in the gas exhaust process, and ensure the exhaust rate of the air flow, thereby ensuring the working efficiency of the exhaust valve. When the exhaust valve is installed on the engine, gas generated in the combustion chamber of the engine can be exhausted, and the probability of the occurrence of surge condition of the engine is reduced.

Description

Exhaust valve and engine

Technical Field

The invention relates to the technical field of engine equipment, in particular to an exhaust valve and an engine.

Background

An engine is a device that converts fuel into power, and generates high-temperature and high-pressure gas by combustion of the fuel in a combustion chamber, and then drives a piston or a turbine by expansion of the gas, thereby generating power. When high-temperature and high-pressure gases are generated by burning fuel in the combustion chamber, if the gases cannot be timely and uniformly discharged, unstable pressure in the combustion chamber can be caused, and the surge phenomenon of the engine is caused.

To avoid surge phenomena in the engine, the engine is usually equipped with exhaust valves. An exhaust valve is a device that can control the relief of pressure in the rear of the combustion chamber. An exhaust valve is typically installed at the rear of the combustion chamber, which controls the flow rate of gas by adjusting the degree of opening of the valve. When the pressure in the combustion chamber is too high, the valve will open, allowing some of the gas to bleed through the valve, thereby reducing the pressure in the combustion chamber. When the pressure in the combustion chamber is reduced to a certain degree, the valve is closed to keep the pressure in the combustion chamber in a stable range, so that the occurrence of the surge phenomenon of the engine is avoided.

There is a natural gas engine anti-surge valve among the prior art, and natural gas engine anti-surge valve includes the casing, and the inside of casing is provided with baffle, reset spring and diaphragm subassembly, and the pressure release mouth has been seted up to the casing of baffle top, has seted up the through-hole on the baffle, and the air inlet has been seted up to the casing of baffle below. When the air pressure at one end of the air inlet is increased, the reset spring enables the whole diaphragm assembly to move upwards under the action of pressure difference, air enters the shell through the air inlet, finally flows out through the pressure relief opening through the through hole on the partition plate, and air exhaust and pressure relief are carried out; when the pressure relief reaches a certain degree, the return spring moves the diaphragm assembly downwards under the action of the pressure difference, and the gas passage between the gas inlet and the pressure relief opening is cut off to stop the pressure relief of the exhaust gas. In the process, because the pressure relief opening and the air inlet are staggered in the set height, when the air flows, the flow direction of the air flow needs to be changed, on one hand, certain impact can be generated inside the shell, and the service life of the shell is influenced; on the other hand, when the gas flow direction is changed, the flow speed of the gas is influenced, so that the efficiency of discharging the gas to the external environment is reduced, and the working efficiency of the anti-surge valve of the natural gas engine is influenced.

Therefore, there is a great need to study an exhaust valve to solve the above problems.

Disclosure of Invention

The invention aims to provide an exhaust valve and an engine, which can reduce impact force on a valve body in the process of exhausting gas, ensure the exhaust rate of air flow and further ensure the working efficiency of the exhaust valve. When the exhaust valve is installed on the engine, gas generated in the combustion chamber of the engine can be exhausted, and the probability of the surge condition of the engine is reduced.

To achieve the purpose, the invention adopts the following technical scheme:

an exhaust valve, comprising:

the valve comprises a valve body, wherein a first channel is arranged in the valve body, one port of the first channel is an air inlet, the other port of the first channel is an air outlet, and the first channel is arranged in a straight line;

the adjusting piece is connected with the valve body and is positioned in the first channel, and the adjusting piece can rotate in the first channel to adjust the gas flow rate in the first channel;

the shell assembly comprises a containing cavity with an opening at one side, and one side of the opening on the shell assembly is connected with the valve body;

the elastic membrane is arranged in the accommodating cavity and is connected with the shell assembly, the accommodating cavity is divided into a first pressure cavity and a second pressure cavity by the elastic membrane, the first pressure cavity is communicated with the air inlet, the second pressure cavity is communicated with the external environment, and the elastic membrane can elastically deform along the axial direction of the accommodating cavity under the action of the pressure difference of the first pressure cavity and the second pressure cavity;

The transmission assembly is arranged in the second pressure cavity, one end of the transmission assembly is connected with the elastic membrane, the other end of the transmission assembly penetrates through the opening of the accommodating cavity to be in transmission connection with the adjusting piece, and the transmission assembly is used for converting elastic deformation of the elastic membrane into rotation of the adjusting piece;

the elastic reset piece, one end of elastic reset piece with the casing subassembly is connected or the butt, the other end of elastic reset piece with elastic diaphragm is connected or the butt, elastic reset piece is used for with elastic diaphragm resets.

Preferably, the valve body is provided with a first connecting hole and a second connecting hole;

the adjusting member includes:

one end of the rotating shaft is rotationally connected with the first connecting hole, and the other end of the rotating shaft is rotationally connected with the second connecting hole;

the adjusting plate, the adjusting plate with axis of rotation fixed connection, the adjusting plate is in inside the first passageway, the adjusting plate includes first extreme position and second extreme position, the adjusting plate is in when the first extreme position, keep away from on the adjusting plate the outer fringe of one side of axis of rotation with the clearance between the inner wall of first passageway is minimum, the adjusting plate is in when the second extreme position, the adjusting plate is last keep away from the outer fringe of one side of axis of rotation with clearance between the inner wall of first passageway is maximum, the adjusting plate is in rotate between first extreme position with the second extreme position in order to adjust gaseous circulation volume inside the first passageway.

Preferably, the rotating shaft is arranged along the radial direction of the first channel, and an included angle is formed between the adjusting plate and the rotating shaft;

the side wall of the first channel is provided with a rotating groove, and the adjusting plate rotates in the rotating groove.

Preferably, a first clamping plate is arranged on one side, facing the first pressure cavity, of the elastic membrane, a second clamping plate is arranged on one side, facing the second pressure cavity, of the elastic membrane, and the first clamping plate and the second clamping plate are connected with each other to clamp the elastic membrane; and one end of the elastic resetting piece, which is close to the elastic membrane, is abutted against the second clamping plate.

Preferably, a first limiting ring is arranged inside the shell assembly;

a second limiting ring is arranged on one side, away from the elastic membrane, of the second clamping plate;

the elastic reset piece is limited by the first limiting ring at one end of the elastic reset piece, which is abutted with the shell assembly, and is limited by the second limiting ring at one end of the elastic reset piece, which is abutted with the second clamping plate.

Preferably, the outer side wall of the second limiting ring is provided with an accommodating groove, and the accommodating groove is used for accommodating a bending part generated in the elastic deformation process of the elastic membrane.

Preferably, the transmission assembly includes:

the closed end of the transmission cylinder is connected with the adjusting piece, and a spiral hole is formed in the side wall of the transmission cylinder;

the transmission rod is connected with the elastic membrane at one end and provided with a guide groove, the other end of the transmission rod extends into the transmission cylinder, a transmission column is arranged at one end of the transmission rod extending into the transmission cylinder, and the transmission column is inserted into the spiral hole;

the exhaust valve further comprises a guide rod, one end of the guide rod is connected with the shell assembly, and the other end of the guide rod is inserted into the guide groove.

Preferably, a transmission ring is rotatably connected to the peripheral side of the transmission column, and the side wall of the transmission ring is abutted to the hole wall of the spiral hole.

Preferably, the side wall of the transmission cylinder is provided with two spiral holes, two sides of one end of the transmission rod extending to the inside of the transmission cylinder are provided with a transmission column, and each transmission column is provided with a transmission ring.

An engine comprises the exhaust valve, the air inlet on the exhaust valve is communicated with a combustion chamber of the engine, the air outlet on the exhaust valve is communicated with the external environment, and the exhaust valve is used for exhausting gas generated by the combustion chamber of the engine.

The invention has the beneficial effects that:

in the exhaust valve provided by the invention, because the first channel is arranged in a straight line, when gas passes through the inside of the first channel, the gas enters from the gas inlet and is exhausted from the gas outlet, in the process, the gas flows along the straight line without changing the direction, so that the impact force of the gas on the inner side wall of the first channel can be reduced, and meanwhile, the gas can quickly flow through the first channel, the condition that the flow direction of the gas changes in the exhausting process is avoided, the efficiency of exhausting the gas to the external environment is improved, and the working efficiency of the exhaust valve is ensured. In addition, in the prior art, the regulating element regulates the flow quantity of gas in the first channel in a moving mode, when the gas contacts with the regulating element, the gas can generate certain impact on the regulating element, and meanwhile, the regulating element can generate certain reaction force on the gas, so that certain influence is generated on the flow direction of the gas. In the invention, the regulating element is positioned in the first channel and regulates the flow of the gas in the first channel in a rotating way, compared with the prior art, the rotating way can effectively slow down the impact of the gas on the regulating element, and simultaneously can reduce the interaction force between the gas and the regulating element, reduce the influence of the regulating element on the gas flow direction, improve the efficiency of exhausting the gas to the external environment, thereby ensuring the working efficiency of the exhaust valve.

Further, when the air pressure at the air inlet in the first channel is increased, in order to realize timely discharge of the air flow by the adjusting piece, the air outlet valve provided by the invention is provided with the elastic membrane for sensing the air pressure at the air inlet of the first channel. Specifically, through with air inlet and first pressure chamber intercommunication make the gas of air inlet can get into first pressure chamber for air inlet department equals with the inside atmospheric pressure of first pressure chamber, when the atmospheric pressure of air inlet department increases, the inside atmospheric pressure of first pressure chamber also increases, after the atmospheric pressure of first pressure chamber is greater than the second pressure chamber, because the atmospheric pressure difference between first pressure chamber and the second pressure chamber will make elastic diaphragm overcome the elasticity of elasticity restoring piece and take place elastic deformation along the axial of holding chamber, and then will cause drive assembly's work. The transmission assembly converts the elastic deformation of the elastic diaphragm into rotation of the adjusting piece, at the moment, the adjusting piece increases the flow of gas in the first channel, and the gas at the gas inlet is accelerated to be discharged to the gas outlet. When the air pressure of air inlet play grow, owing to the setting of elastic diaphragm, can respond in time to the atmospheric pressure difference change in first pressure chamber and second pressure chamber, elastic diaphragm takes place elastic deformation along the axial of holding chamber promptly, and drive assembly passes elastic deformation of elastic diaphragm to regulating part department, causes the rotation of regulating part, can be to the gas discharge of the air inlet department of first passageway. The combination setting of elastic diaphragm and regulating part can carry out reasonable regulation to the atmospheric pressure of air inlet department of first passageway, when the atmospheric pressure of air inlet department increases, makes the response by elastic diaphragm, makes the action by the regulating part, in time discharges the air inlet department of first passageway, has guaranteed discharge valve's work efficiency.

In the engine provided by the invention, the air inlet on the exhaust valve is communicated with the combustion chamber of the engine, and the air outlet on the exhaust valve is communicated with the external environment, so that the first channel is used for generating gas through the combustion of fuel in the combustion chamber of the engine, when the pressure in the combustion chamber is too high, the regulating element increases the flow quantity of the gas in the first channel, and when the pressure in the combustion chamber is reduced, the regulating element decreases the flow quantity of the gas in the first channel. The exhaust valve discharges the gas in the combustion chamber as described above, and the gas pressure in the combustion chamber of the engine is reduced by the exhaust process. When the air pressure at the air inlet starts to decrease after the air discharge part in the combustion chamber, the air pressure difference between the first pressure cavity and the second pressure cavity starts to decrease, and the elastic diaphragm slowly resets under the action of the elastic force of the elastic resetting piece, so that the transmission assembly works again. The transmission assembly converts the elastic deformation of the elastic diaphragm into rotation of the adjusting piece, at the moment, the adjusting piece reduces the flow of gas in the first channel, slows down the discharge of the gas at the gas inlet to the gas outlet, improves the gas pressure at the gas inlet, and then improves the gas pressure in the engine combustion chamber. From this set up the elastic diaphragm and respond to the atmospheric pressure of first pressure intracavity, the atmospheric pressure of air inlet department promptly, the atmospheric pressure in the combustion chamber promptly, when the atmospheric pressure in the combustion chamber changed, elastic diaphragm in time made elastic deformation, and transmission subassembly is with elastic deformation transmission to regulating part department of elastic diaphragm, arouses the rotation of regulating part in first passageway inside, adjusts the inside gas circulation of first passageway to the inside gas emission of control combustion chamber. The combination setting of elastic diaphragm and regulating part can rationally adjust the atmospheric pressure in the engine combustion chamber, when the atmospheric pressure in the engine combustion chamber increases, respond to by elastic diaphragm, make the action by the regulating part, in time discharge the air in order to reduce the atmospheric pressure in the engine combustion chamber with the air inlet department of first passageway, when the atmospheric pressure in the engine combustion chamber diminishes, respond to by elastic diaphragm, make the action by the regulating part, reduce the gaseous circulation in the first passageway for the gaseous difficult exhaust in the engine combustion chamber, thereby improve the atmospheric pressure in the engine combustion chamber. In this way, the pressure inside the combustion chamber of the engine is maintained within a stable range, thereby avoiding the occurrence of engine surge.

Drawings

FIG. 1 is an isometric view of an exhaust valve according to one embodiment of the present invention;

FIG. 2 is a first cross-sectional view of an exhaust valve according to one embodiment of the present invention;

FIG. 3 is a second cross-sectional view of an exhaust valve according to one embodiment of the present invention;

fig. 4 is an isometric view of an adjustment member for an exhaust valve according to a second embodiment of the invention.

In the figure:

1. a valve body; 11. a first channel; 111. an air inlet; 112. an air outlet; 12. a first connection hole; 13. a second connection hole;

2. an adjusting member; 21. a rotating shaft; 211. a first bearing; 212. a second bearing; 213. a first seal ring; 214. a second seal ring; 22. an adjusting plate; 221. a connection part; 222. an adjusting section; 23. a first arcuate plate; 231. a vent hole; 24. a second arcuate plate;

3. a housing assembly; 31. a second housing; 311. a hollow passage; 312. a communication hole; 313. a first stop collar; 32. a third housing; 321. a positioning groove; 33. a receiving chamber; 331. a first pressing cavity; 332. a second pressing cavity; 34. a communication pipe; 35. an electromagnetic valve;

4. an elastic membrane; 41. positioning the bulge; 42. a first clamping plate; 43. a second clamping plate; 431. a second limiting ring; 4311. a receiving groove;

5. A transmission assembly; 51. a transmission cylinder; 511. a spiral hole; 52. a transmission rod; 521. a guide groove; 53. a drive column; 54. a drive ring; 55. a guide rod;

6. an elastic reset piece.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, either fixed or removable; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 3, the present embodiment provides an exhaust valve and an engine, which can reduce impact force on a valve body in a gas exhaust process, and ensure an exhaust rate of gas flow, thereby ensuring working efficiency of the exhaust valve. When the exhaust valve is installed on the engine, gas generated in the combustion chamber of the engine can be exhausted, and the probability of the occurrence of surge condition of the engine is reduced.

The exhaust valve comprises a valve body 1 and an adjusting member 2. Wherein, the valve body 1 is provided with a first channel 11, one port of the first channel 11 is an air inlet 111, the air inlet 111 can be communicated with the combustion chamber of the engine, the other port of the first channel 11 is an air outlet 112, and the air outlet 112 is communicated with the external environment. The first passage 11 is disposed in a straight line, and the air inlet 111 is coaxial with the air outlet 112. The regulating member 2 is connected to the valve body 1, the regulating member 2 is located inside the first passage 11, and the regulating member 2 can be rotated inside the first passage 11 to regulate the gas flow rate inside the first passage 11.

In the exhaust valve provided in the present embodiment, the first passage 11 is used for gas generated by combustion of fuel in the combustion chamber of the engine, and when the pressure in the combustion chamber is too high, the regulating member 2 increases the flow rate of gas inside the first passage 11, and when the pressure in the combustion chamber is reduced, the regulating member 2 decreases the flow rate of gas inside the first passage 11. Because the first passageway 11 is the straight line setting, coaxial between air inlet 111 and the gas outlet 112, when gas is at the inside through of first passageway 11, get into by air inlet 111, by the gas outlet 112 exhaust, at this in-process, gas flows along the straight line, need not to change the direction, can reduce the impact force of gas to the inside wall of first passageway 11, make the gas flow through first passageway 11 that simultaneously can be quick, avoided gas to take place the condition that the flow direction changes at the exhaust in-process, improved the efficiency of gas discharge to external environment, thereby guarantee discharge valve's work efficiency. In addition, in the prior art, the adjusting member 2 adjusts the flow rate of the gas in the first channel 11 in a moving manner, when the gas contacts with the adjusting member 2, the gas will generate a certain impact on the adjusting member 2, and at the same time, the adjusting member 2 will also generate a certain reaction force on the gas, so as to generate a certain influence on the flow direction of the gas. In this embodiment, the adjusting member 2 is located inside the first channel 11, and adjusts the flow rate of the gas in the first channel 11 in a rotating manner, compared with the prior art, the rotating manner can effectively slow down the impact of the gas on the adjusting member 2, and meanwhile, can reduce the interaction force between the gas and the adjusting member 2, reduce the influence of the adjusting member 2 on the gas flow direction, improve the efficiency of exhausting the gas to the external environment, thereby ensuring the working efficiency of the exhaust valve.

In the present embodiment, in order to improve the reliability and stability of the regulator 2, the valve body 1 is provided with a first connection hole 12 and a second connection hole 13. The adjusting member 2 includes a rotation shaft 21 and an adjusting plate 22, one end of the rotation shaft 21 is rotatably connected to the first connecting hole 12, and the other end of the rotation shaft 21 is rotatably connected to the second connecting hole 13. The adjusting plate 22 is fixedly connected with the rotating shaft 21, and the adjusting plate 22 is positioned in the first channel 11. The adjusting plate 22 comprises a first limit position and a second limit position, when the adjusting plate 22 is at the first limit position, the gap between the outer edge of one side of the adjusting plate 22 far away from the rotating shaft 21 and the inner wall of the first channel 11 is the smallest; when the regulating plate 22 is in the second limit position, the gap between the outer edge of the side of the regulating plate 22 away from the rotation shaft 21 and the inner wall of the first passage 11 is maximized, and the regulating plate 22 is rotated between the first limit position and the second limit position to regulate the flow rate of the gas in the first passage 11.

In order to further improve the circulation efficiency of the gas in the first channel 11 and reduce the influence of the adjusting plate 22 on the flow direction of the gas, the rotating shaft 21 is arranged along the radial direction of the first channel 11, an included angle is formed between the adjusting plate 22 and the rotating shaft 21, a rotating groove is formed in the side wall of the first channel 11, and the adjusting plate 22 rotates in the rotating groove. In this way, corresponding to the inclined arrangement of the regulating plate 22 inside the first channel 11, when the gas comes into contact with the regulating plate 22, the gas will flow in the inclined direction of the regulating plate 22 to the edge of the regulating plate 22 and then out through the gap between the regulating plate 22 and the side wall of the first channel 11. The inclined arrangement of the adjusting plate 22 can generate a certain drainage effect for the gas when the first channel 11 contacts the adjusting plate 22, guide the gas to flow along the inclined direction of the adjusting plate 22, accelerate the discharge speed of the gas to the external environment, and improve the working efficiency of the exhaust valve.

To improve the connection strength between the adjustment plate 22 and the rotation shaft 21, the adjustment plate 22 includes a connection portion 221 and an adjustment portion 222. The connection portion 221 has a tubular structure, and the connection portion 221 is fitted around the rotation shaft 21. The adjusting part 222 is in an oval plate-shaped structure, the adjusting part 222 and the connecting part 221 are integrally formed, the adjusting part 222 and the connecting part 221 are arranged at an included angle, and the adjusting part 222 rotates in the rotating groove. In this way, the connecting portion 221 is sleeved on the rotating shaft 21, so that the connection strength between the connecting portion 221 and the rotating shaft 21 can be enhanced, the connection strength between the adjusting portion 222 and the connecting portion 221 can be enhanced by integrally forming the adjusting portion 222 and the connecting portion 221, the connection strength between the adjusting plate 22 and the rotating shaft 21 can be enhanced, the working reliability of the adjusting plate 22 can be improved, and the working reliability of the exhaust valve can be further ensured.

For the connection between the adjusting plate 22 and the rotating shaft 21, the adjusting plate 22 and the rotating shaft 21 are riveted by a tensioning pin. The connecting portion 221 is provided with a first through hole along a radial direction thereof, the rotating shaft 21 is provided with a second through hole along a radial direction thereof, the aperture of the first through hole is equal to the aperture of the second through hole, and the opening positions of the first through hole and the second through hole correspond to each other. One end of the tensioning pin is positioned outside one port of the second through hole, and the other end of the tensioning pin penetrates through the first through hole and penetrates through the other port of the second through hole. The connection part 221 is radially connected with the rotating shaft 21, so that the reliability of simultaneous rotation between the rotating shaft 21 and the connection part 221 can be ensured, the reliability of rotation of the adjusting plate 22 in the first channel 11 is improved, and the working reliability of the exhaust valve is further ensured.

In order to improve the sealing property between the regulating plate 22 and the side wall of the first passage 11, the regulating portion 222 is provided with an annular groove on the peripheral side, and a sealing collar is provided inside the groove. When the adjusting plate 22 is closed to the first passage 11, the sealing collar is closely abutted against the side wall of the first passage 11 after being subjected to heat transferred from the combustion chamber of the engine, so that the tightness between the adjusting plate 22 and the side wall of the first passage 11 is improved.

One end of the rotation shaft 21 is connected to the hole side wall of the first connection hole 12 through a first bearing 211, and the other end of the rotation shaft 21 is connected to the hole side wall of the second connection hole 13 through a second bearing 212. The first bearing 211 and the second bearing 212 are high temperature resistant bearings to ensure reliable rotation of the rotating shaft 21 without jamming. The rotating shaft 21 is further sleeved with a first sealing ring 213 and a second sealing ring 214, the first sealing ring 213 is located between the first bearing 211 and the connecting portion 221, and the second sealing ring 214 is located between the connecting portion 221 and the second bearing 212. The first seal ring 213 can improve the sealability of the first passage 11 at the hole side wall of the first connecting hole 12; the second seal ring 214 can improve the sealability of the first passage 11 at the hole side wall of the second connection hole 13.

In this embodiment, the vent valve further comprises a housing assembly 3, an elastic membrane 4, a transmission assembly 5 and an elastic return 6. Wherein, the housing assembly 3 includes a receiving cavity 33 with an opening at one side, and the opening side of the housing assembly 3 is connected with the valve body 1. The elastic membrane 4 is arranged inside the accommodating cavity 33 and is connected with the shell component 3, the accommodating cavity 33 is divided into a first pressure cavity 331 and a second pressure cavity 332 by the elastic membrane 4, the first pressure cavity 331 is communicated with the air inlet 111, the second pressure cavity 332 is communicated with the external environment, and the elastic membrane 4 can elastically deform along the axial direction of the accommodating cavity 33 under the action of the pressure difference between the first pressure cavity 331 and the second pressure cavity 332. The transmission assembly 5 is disposed inside the second pressing cavity 332, one end of the transmission assembly 5 is connected with the elastic membrane 4, the other end of the transmission assembly 5 passes through the opening of the accommodating cavity 33 and is in transmission connection with the adjusting member 2, and the transmission assembly 5 is used for converting the elastic deformation of the elastic membrane 4 into the rotation of the adjusting member 2. One end of the elastic restoring piece 6 is connected or abutted with the shell assembly 3, the other end of the elastic restoring piece 6 is connected or abutted with the elastic membrane 4, and the elastic restoring piece 6 is used for restoring the elastic membrane 4.

For the setting position of the elastic restoring member 6, the elastic restoring member 6 may be disposed inside the first pressing cavity 331 or inside the second pressing cavity 332. As for the arrangement of the elastic restoring member 6, the elastic restoring member 6 may be provided as an elastic piece or a spring. In the present embodiment, the elastic restoring member 6 is provided as a spring and is disposed inside the second pressing chamber 332.

Through communicating the air inlet 111 with the first pressure cavity 331, the air in the air inlet 111 can enter the first pressure cavity 331, when the air pressure in the air inlet 111 is increased, the air pressure in the first pressure cavity 331 is also increased, after the air pressure in the first pressure cavity 331 is greater than that in the second pressure cavity 332, the elastic membrane 4 overcomes the elastic force of the spring and generates elastic deformation along the axial direction of the accommodating cavity 33 due to the air pressure difference between the first pressure cavity 331 and the second pressure cavity 332, and then the operation of the transmission assembly 5 is caused. The transmission assembly 5 converts the elastic deformation of the elastic membrane 4 into the rotation of the adjusting member 2, at this time, the adjusting member 2 increases the flow of the gas in the first channel 11, accelerates the discharge of the gas at the gas inlet 111 to the gas outlet 112, reduces the gas pressure at the gas inlet 111, and then reduces the gas pressure in the combustion chamber of the engine. When the air pressure at the air inlet 111 starts to decrease, the air pressure difference between the first pressure chamber 331 and the second pressure chamber 332 starts to decrease, and the elastic diaphragm 4 slowly resets under the action of the spring force, again causing the operation of the transmission assembly 5. The transmission assembly 5 converts the elastic deformation of the elastic membrane 4 into the rotation of the adjusting member 2, at this time, the adjusting member 2 reduces the flow of the gas in the first channel 11, slows down the discharge of the gas at the gas inlet 111 to the gas outlet 112, increases the gas pressure at the gas inlet 111, and then increases the gas pressure in the combustion chamber of the engine. And the pressure in the combustion chamber of the engine is kept in a stable range by circulating and reciprocating, so that the occurrence of the surge phenomenon of the engine is avoided.

Specifically, the housing assembly 3 includes a second housing 31 and a third housing 32, the second housing 31 being connected to the valve body 1, the second housing 31 having a hollow passage 311. The third housing 32 is connected to the second housing 31, and the third housing 32 and the second housing 31 are buckled to form a containing cavity 33. The outer periphery of the elastic diaphragm 4 is sandwiched between the second housing 31 and the third housing 32, a first pressure chamber 331 is formed between the elastic diaphragm 4 and the third housing 32, and a second pressure chamber 332 is formed between the elastic diaphragm 4, the second housing 31, and the valve body 1. One end of the transmission assembly 5 is connected with the elastic membrane 4, and the other end of the transmission assembly 5 passes through the hollow passage 311 to be connected with one end of the rotation shaft 21 at the first connection hole 12. One end of the spring abuts against the second housing 31, and the other end of the spring abuts against the elastic diaphragm 4. The shell assembly 3 is arranged in the form of the second shell 31 and the third shell 32, so that an operator can conveniently install the elastic membrane 4 and the transmission assembly 5 in the accommodating cavity 33, and meanwhile, the operator can conveniently check and maintain the structure in the accommodating cavity 33.

Specifically, the second housing 31 is connected to the valve body 1 on one side where the first connection hole 12 is formed, so as to facilitate connection between the transmission assembly 5 and the rotation shaft 21. The second shell 31 is connected with the valve body 1 through a screw, the third shell 32 is connected with the second shell 31 through a screw, and the operation of operators is facilitated through the screw connection mode; another advantage is that it enables a tight connection between the second housing 31 and the valve body 1, as well as between the third housing 32 and the second housing 31. The third housing 32 is recessed toward a side away from the second housing 31 to increase the space of the accommodating chamber 33.

For the communication mode between the first pressure chamber 331 and the air inlet 111, a communication pipe 34 is connected to the side wall of the first pipe between the regulator 2 and the air inlet 111, one end of the communication pipe 34 is connected to the valve body 1 by a screw and communicates with the air inlet 111, and the other end of the communication pipe 34 is also connected to the third housing 32 by a screw and communicates with the first pressure chamber 331. The one end that the communication pipeline 34 is connected with the valve body 1 is provided with the copper gasket, and the one end that the communication pipeline 34 is connected with the third casing 32 is provided with the copper gasket, and the setting of copper gasket can improve the connection leakproofness between communication pipeline 34 and the valve body 1, also can improve the connection leakproofness between communication pipeline 34 and the third casing 32 simultaneously. The communication pipeline 34 is provided with an electromagnetic valve 35, and the electromagnetic valve 35 is used for controlling the on-off of the communication pipeline 34, namely controlling whether the air inlet 111 is communicated with the first pressure cavity 331, namely controlling whether the exhaust valve works. For the way that the second pressure cavity 332 is communicated with the external environment, the side wall of the second shell 31 is provided with a plurality of communication holes 312, the communication holes 312 are used for communicating the second pressure cavity 332 positioned in the second shell 31 with the external environment, and the air pressure of the second pressure cavity 332 is kept equal to the atmospheric pressure.

In order to improve the stability of the elastic membrane 4 clamped between the second shell 31 and the third shell 32, an annular positioning protrusion 41 is arranged on the periphery of the elastic membrane 4, an annular positioning groove 321 is formed in the abutting part of the third shell 32 and the elastic membrane 4, and the positioning protrusion 41 arranged on the elastic membrane 4 is embedded in the positioning groove 321 on the third shell 32. The setting of location arch 41 and positioning groove 321 can increase the centre gripping area between elastic membrane 4 and the second casing 31, simultaneously, laminating each other between location arch 41 lateral wall and the positioning groove 321 lateral wall can overcome the pulling force that elastic membrane 4 produced at elastic deformation process, guarantees the stability of elastic membrane 4 centre gripping between second casing 31 and third casing 32. In addition, the elastic membrane 4 is concave in the accommodating cavity 33 along the sidewall direction of the third housing 32 towards the side far away from the second housing 31, so as to enlarge the space of the second pressing cavity 332 and provide space for the transmission assembly 5.

In order to stabilize the stress of the elastic membrane 4 and improve the stability of the elastic membrane 4, a first clamping plate 42 is arranged on the side, facing the first pressure cavity 331, of the elastic membrane 4, a second clamping plate 43 is arranged on the side, facing the second pressure cavity 332, of the elastic membrane 4, and the first clamping plate 42 and the second clamping plate 43 are connected with each other to clamp the elastic membrane 4. One end of the spring, which is close to the elastic membrane 4, is in abutment with the second clamping plate 43. The first clamping plate 42 and the second clamping plate 43 are connected by screws, for example. Through setting up first splint 42 and second splint 43 and carrying out the centre gripping with elastic membrane 4, be equivalent to carrying out the solidification with elastic membrane 4 both sides for elastic membrane 4 is after the atress, gives first splint 42 and second splint 43 with the power transmission, when can making elastic membrane 4 local atress, converts the whole atress of first splint 42 and second splint 43 into, converts the local displacement of elastic membrane 4 into the whole displacement of first splint 42 and second splint 43, thereby guarantees elastic membrane 4's atress stability, and improves elastic membrane 4 and take place elastic deformation's stability in holding chamber 33 inside.

In order to prevent the spring from being biased in the axial direction thereof during compression or extension, the second housing 31 is provided with a first stopper 313, and the first stopper 313 is provided on the circumferential side of the hollow passage 311. The side of the second clamping plate 43 facing away from the elastic membrane 4 is provided with a second stop collar 431. One end of the spring, which is abutted against the second housing 31, is limited by the first limiting ring 313, and one end of the spring, which is abutted against the second clamping plate 43, is limited by the second limiting ring 431. Specifically, one end of the spring, which is close to the second housing 31, is sleeved on the outer periphery of the first limiting ring 313 and abuts against the outer side wall of the first limiting ring 313. One end of the spring, which is close to the second clamping plate 43, is positioned inside the second limiting ring 431 and is abutted against the inner side wall of the second limiting ring 431. By providing the first stop collar 313 and the second stop collar 431, both ends of the spring can be stopped, and the spring can be ensured to be compressed or stretched along the axial direction of the spring.

In the process of elastic deformation of the elastic membrane 4, a bending part is not generated, and in order to solve the problem, the outer side wall of the second limiting ring 431 is provided with a containing groove 4311, and the containing groove 4311 is used for containing the bending part generated in the elastic deformation process of the elastic membrane 4. The accommodating groove 4311 is annularly formed along the circumferential direction of the second limiting ring 431, and the distance between two opposite groove walls on the accommodating groove 4311 is larger and larger along the direction away from the groove bottom, so that the elastic membrane 4 can be conveniently accommodated in the accommodating groove 4311 during bending.

For the arrangement of the transmission assembly 5, in one embodiment, the transmission assembly 5 is provided with a screw nut mechanism, and one end of the screw is connected with the elastic membrane 4; the periphery of the nut is connected with the adjusting piece 2, and when the screw rod moves, the nut drives the adjusting piece 2 to rotate.

In this embodiment, to improve the reliability and stability of the transmission assembly 5, the transmission assembly 5 includes a transmission cylinder 51 and a transmission rod 52. Wherein, the closed end of the transmission cylinder 51 is connected with the adjusting piece 2, and the side wall of the transmission cylinder 51 is provided with a spiral hole 511. One end of the transmission rod 52 is connected with the elastic membrane 4, the other end of the transmission rod 52 extends into the transmission cylinder 51, one end of the transmission rod 52 extending into the transmission cylinder 51 is provided with a transmission column 53, and the transmission column 53 is inserted into the spiral hole 511. Specifically, the closed end of the transmission tube 51 is connected to the rotation shaft 21, and after the elastic membrane 4 is clamped by the first clamping plate 42 and the second clamping plate 43, one end of the transmission rod 52 is connected to the second clamping plate 43. The exhaust valve further comprises a guide rod 55, one end of the guide rod 55 is connected with the third shell 32, one end of the transmission rod 52, which is close to the elastic membrane 4, is provided with a guide groove 521, and the other end of the guide rod 55 is inserted into the guide groove 521. Specifically, through holes are formed in the first clamping plate 42, the elastic membrane 4 and the second clamping plate 43, and one end of the guide rod 55 passes through the first clamping plate 42, the elastic membrane 4 and the second clamping plate 43 and is inserted into the guide groove 521. When the elastic membrane 4 is elastically deformed, the transmission rod 52 is also moved, which in turn causes the transmission post 53 to move inside the spiral hole 511. The transmission rod 52 can only move along the vertical direction under the limitation of the guide rod 55 and the guide groove 521, and due to the arrangement of the spiral hole 511, when the transmission column 53 moves along the vertical direction, an interaction force occurs between the side wall of the transmission column 53 and the side wall of the spiral hole 511, so that the transmission cylinder 51 is driven to rotate, the rotation shaft 21 is driven to rotate, and finally the adjusting plate 22 is driven to rotate, so that the adjusting plate 22 rotates in the first channel 11 to adjust the flow of gas in the first channel 11.

In order to reduce the friction between the side wall of the transmission column 53 and the wall of the spiral hole 511 and improve the transmission efficiency of the transmission assembly 5, the circumference side of the transmission column 53 is rotationally connected with a transmission ring 54, and the side wall of the transmission ring 54 is abutted with the wall of the spiral hole 511. During the transmission process, the transmission ring 54 can rotate on the transmission column 53, so that the sliding friction between the side wall of the transmission column 53 and the wall of the spiral hole 511 is converted into rolling friction between the side wall of the transmission ring 54 and the wall of the spiral hole 511, and the friction between the side wall of the transmission column 53 and the wall of the spiral hole 511 is reduced.

In order to further improve the reliability and stability of the transmission assembly 5, two spiral holes 511 are symmetrically formed in the side wall of the transmission barrel 51, two sides of one end of the transmission rod 52 extending to the inside of the transmission barrel 51 are respectively provided with a transmission column 53, and each transmission column 53 is provided with a transmission ring 54.

In order to improve the working reliability of the exhaust valve and prolong the service life of the exhaust valve, the structural design in the exhaust valve is made of lighter materials to improve the strength of the exhaust valve.

Specifically, the material of the spring is GH4145 material, GH4145 is a high-temperature alloy material, mainly comprises nickel, chromium, molybdenum and other elements, has good high-temperature strength and corrosion resistance, and is suitable for the application of the spring in a high-temperature environment. The GH4145 material is selected for the spring, so that the stability of the elasticity and the long-term high-temperature-resistant elasticity attenuation pole can be ensured.

The valve body 1 is made of TC4 material, the TC4 material is a titanium alloy material and mainly comprises elements such as titanium, aluminum, vanadium and the like, and the valve has the characteristics of light weight, high strength and good corrosion resistance.

The material of the sealing collar is 60Si2MnA material, the 60Si2MnA material is a spring steel material and mainly comprises elements such as carbon, silicon, manganese and the like, and the material has higher yield strength and tensile strength after quenching and tempering treatment, and is suitable for application of the sealing collar with higher strength and durability.

The material of the elastic membrane 4 is G100 material, G100 is vinyl silicone rubber material, and is commonly used in aerospace equipment. The material has good high temperature resistance and chemical corrosion resistance. The elastic membrane 4 is made of a G100 material, so that the elastic membrane can bear the requirements of high pressure and high temperature environments, and the safety and reliability are ensured.

The embodiment also provides an engine, which comprises the exhaust valve, wherein an air inlet 111 on the exhaust valve is communicated with a combustion chamber of the engine, an air outlet 112 on the exhaust valve is communicated with the external environment, and the exhaust valve is used for exhausting gas generated by the combustion chamber of the engine.

Example two

The present embodiment provides an exhaust valve, which has substantially the same structure as that of the first embodiment, and the same features are not described herein, and are different in the setting of the adjusting member, referring to fig. 4, the adjusting member includes a first arc plate 23 and a second arc plate 24, the first arc plate 23 and the second arc plate 24 are both located inside the first channel, a plurality of ventilation holes 231 are formed in the first arc plate 23, the first arc plate 23 is disposed along the radial direction of the first channel, and the first arc plate 23 is fixedly connected with the side wall of the first channel. The arc surfaces between the second arc-shaped plate 24 and the first arc-shaped plate 23 are mutually abutted, and the second arc-shaped plate 24 and the first arc-shaped plate 23 can rotate relatively. The second arc plate comprises a first position and a second position, and when the second arc plate is positioned at the first position, all the vent holes on the first arc plate are blocked by the second arc plate; when the second arc plate is positioned at the second position, all the vent holes on the first arc plate leak out; when the second arc plate is positioned between the first position and the second position, the vent hole part on the first arc plate leaks out. The second arcuate plate rotates between a first position and a second position to regulate the flow of gas through the first passage 11.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. An exhaust valve, comprising:

the valve comprises a valve body (1), wherein a first channel (11) is arranged in the valve body (1), one port of the first channel (11) is an air inlet (111), the other port of the first channel (11) is an air outlet (112), and the first channel (11) is arranged in a straight line;

the regulating piece (2) is connected with the valve body (1), the regulating piece (2) is positioned inside the first channel (11), and the regulating piece (2) can rotate inside the first channel (11) to regulate the gas flow rate inside the first channel (11);

the housing assembly (3) comprises a containing cavity (33) with an opening at one side, and one side of the upper opening of the housing assembly (3) is connected with the valve body (1);

The elastic membrane (4) is arranged in the accommodating cavity (33) and is connected with the shell component (3), the accommodating cavity (33) is divided into a first pressure cavity (331) and a second pressure cavity (332) by the elastic membrane (4), the first pressure cavity (331) is communicated with the air inlet (111), the second pressure cavity (332) is communicated with the external environment, and the elastic membrane (4) can elastically deform along the axial direction of the accommodating cavity (33) under the action of the pressure difference between the first pressure cavity (331) and the second pressure cavity (332);

the transmission assembly (5) is arranged in the second pressing cavity (332), one end of the transmission assembly (5) is connected with the elastic membrane (4), the other end of the transmission assembly (5) penetrates through the opening of the accommodating cavity (33) to be in transmission connection with the adjusting piece (2), and the transmission assembly (5) is used for converting elastic deformation of the elastic membrane (4) into rotation of the adjusting piece (2);

the elastic reset piece (6), one end of the elastic reset piece (6) is connected with or is abutted to the shell assembly (3), the other end of the elastic reset piece (6) is connected with or is abutted to the elastic membrane (4), and the elastic reset piece (6) is used for resetting the elastic membrane (4).

2. The exhaust valve according to claim 1, characterized in that the valve body (1) is provided with a first connection hole (12) and a second connection hole (13);

the adjusting member (2) includes:

a rotating shaft (21), wherein one end of the rotating shaft (21) is rotatably connected to the first connecting hole (12), and the other end of the rotating shaft (21) is rotatably connected to the second connecting hole (13);

the adjusting plate (22), adjusting plate (22) with axis of rotation (21) fixed connection, adjusting plate (22) are in inside first passageway (11), adjusting plate (22) are including first extreme position and second extreme position, adjusting plate (22) are in when first extreme position, keep away from on adjusting plate (22) the clearance between the outer fringe of one side of axis of rotation (21) and the inner wall of first passageway (11) is minimum, adjusting plate (22) are in when second extreme position, the clearance between the outer fringe of one side of keeping away from on adjusting plate (22) axis of rotation (21) and the inner wall of first passageway (11) is maximum, adjusting plate (22) are in first extreme position with rotate between the second extreme position in order to adjust the gas flow in inside first passageway (11).

3. The exhaust valve according to claim 2, characterized in that the rotation shaft (21) is arranged in the radial direction of the first channel (11), the adjustment plate (22) being arranged at an angle to the rotation shaft (21);

The inner wall of the first channel (11) is provided with a rotating groove, and the adjusting plate (22) rotates in the rotating groove.

4. The exhaust valve according to claim 1, characterized in that a first clamping plate (42) is provided on the side of the elastic membrane (4) facing the first pressure chamber (331), a second clamping plate (43) is provided on the side of the elastic membrane (4) facing the second pressure chamber (332), and the first clamping plate (42) and the second clamping plate (43) are connected to each other to clamp the elastic membrane (4); one end of the elastic restoring piece (6) close to the elastic membrane (4) is abutted against the second clamping plate (43).

5. The exhaust valve according to claim 4, characterized in that the housing assembly (3) is internally provided with a first stop collar (313);

a second limiting ring (431) is arranged on one side of the second clamping plate (43) away from the elastic membrane (4);

one end of the elastic reset piece (6) abutted with the shell assembly (3) is limited by the first limiting ring (313), and one end of the elastic reset piece (6) abutted with the second clamping plate (43) is limited by the second limiting ring (431).

6. The exhaust valve according to claim 5, wherein the outer side wall of the second limiting ring (431) is provided with a receiving groove (4311), and the receiving groove (4311) is used for receiving a bending portion of the elastic membrane (4) generated in the elastic deformation process.

7. The exhaust valve according to claim 1, characterized in that the transmission assembly (5) comprises:

the closed end of the transmission cylinder (51) is connected with the adjusting piece (2), and a spiral hole (511) is formed in the side wall of the transmission cylinder (51);

the transmission rod (52), one end of the transmission rod (52) is connected with the elastic membrane (4) and is provided with a guide groove (521), the other end of the transmission rod (52) extends into the transmission cylinder (51), one end of the transmission rod (52) extending into the transmission cylinder (51) is provided with a transmission column (53), and the transmission column (53) is inserted into the spiral hole (511);

the exhaust valve further comprises a guide rod (55), one end of the guide rod (55) is connected with the shell assembly (3), and the other end of the guide rod (55) is inserted into the guide groove (521).

8. The exhaust valve according to claim 7, characterized in that a transmission ring (54) is rotatably connected to the peripheral side of the transmission column (53), and the side wall of the transmission ring (54) abuts against the wall of the spiral hole (511).

9. The exhaust valve according to claim 8, wherein two spiral holes (511) are formed in the side wall of the transmission cylinder (51), transmission columns (53) are disposed on two sides of one end of the transmission rod (52) extending into the transmission cylinder (51), and a transmission ring (54) is disposed on each transmission column (53).

10. An engine comprising a combustion chamber and an exhaust valve according to any one of claims 1-9, said inlet (111) of said exhaust valve being in communication with said combustion chamber and said outlet (112) of said exhaust valve being in communication with the environment, said exhaust valve being adapted to exhaust gases generated in said combustion chamber of said engine.