Axial flow anti-surge control valve

Abstract

The present invention discloses an axial flow anti-surge control valve, which relates to the technical field of industrial fluid control equipment. Its technical solution includes: a valve body, one end of the valve body is equipped with an anti-surge mechanism, the anti-surge mechanism includes a rotating cylinder and a fan blade flip assembly, the fan blade flip assembly is sleeved on the rotating cylinder, the fan blade flip assembly includes a plurality of fan blades, and the fan blade flip assembly can adaptively adjust the flip angle of the fan blade according to the wind pressure; the other end of the valve body is fixedly equipped with a flow control inner ring, the flow control inner ring is sleeved on one end of the valve disc, and a flow control outer ring is slidably installed on the outer wall of the flow control inner ring, and the flow control inner ring and the flow control outer ring are both provided with a plurality of circular holes, and a connecting rod is installed between the flow control outer ring and the fan blade flip assembly. The present invention relies on gas pressure changes to drive the dual mechanism linkage to achieve timely response to flow mutations, significantly enhance the valve stability, and avoid the hysteresis and complexity of traditional control systems.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial fluid control equipment, and more particularly to an axial flow anti-surge control valve. Background Art

[0002] In the field of industrial fluid control, valves are key flow control devices, and their operational stability is crucial to the safe and efficient operation of the entire system. Traditional valve control systems face severe challenges, especially in complex operating conditions, such as the sudden flow changes that often occur during gas transportation.

[0003] In the existing technology, to address the surge problem caused by sudden changes in gas flow, a separate anti-surge device is usually used or an electronic control system is relied upon for adjustment. For example, some equipment installs sensors to monitor gas flow and pressure in real time. When an abnormal situation such as a sudden drop in flow is detected, the control system sends a signal to drive the valve to adjust the opening. However, this electronic control system that relies on additional control signals has obvious defects: on the one hand, there is a lag in signal transmission and processing, making it difficult to respond immediately to sudden changes in flow, resulting in asynchronous gas pressure regulation at the inlet and outlet ends, exacerbating the instability of system operation; on the other hand, complex electronic control components not only increase equipment costs and maintenance difficulties, but also significantly reduce reliability in harsh environments such as high temperature, high pressure, and strong electromagnetic interference.

[0004] Furthermore, the inlet and outlet control mechanisms of traditional valves are often independent of each other, lacking effective coordination. When gas flow suddenly changes, the anti-surge mechanism and flow control mechanism cannot work together in real time, making it difficult to simultaneously adjust the outlet valve opening while expanding the inlet flow gap. This leads to gas pressure imbalance, further causing equipment vibration, noise, and even damage. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the purpose of the present invention is to provide an axial flow anti-surge control valve, which constructs a coordinated cooperation mechanism for air pressure regulation at the inlet and outlet ends through the mechanical linkage structure of the anti-surge mechanism and the flow control outer ring. The fan blade flip assembly in the anti-surge mechanism can adaptively adjust the fan blade angle according to the sudden change in gas flow. When the flow drops suddenly, the angle increases, the gas circulation gap is expanded, and the flow at the inlet end is instantly increased. At the same time, the movement of the fan blade assembly drives the flow control outer ring to slide through the connecting rod, so that the misalignment state of the circular holes of the flow control inner ring and the outer ring changes accordingly, and the outlet valve opening is synchronously adjusted. This purely mechanical adaptive adjustment that does not require additional control signals relies on the linkage of the dual mechanisms driven by changes in gas pressure to achieve timely response to sudden changes in flow, significantly enhancing the operating stability of the valve under complex working conditions and avoiding the lag and complexity of traditional control systems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising a valve body, a valve disc being slidably mounted in the valve body, the valve disc being capable of reciprocating movement, an anti-surge mechanism being mounted at one end of the valve body, the anti-surge mechanism comprising a rotating cylinder and a fan blade flipping assembly, the fan blade flipping assembly being sleeved on the rotating cylinder, the fan blade flipping assembly comprising a plurality of fan blades arranged in a circular array, and the fan blade flipping assembly being capable of adaptively adjusting the flipping angle of the fan blades according to the wind pressure; a flow control inner ring being fixedly mounted at the other end of the valve body, the flow control inner ring being sleeved on one end of the valve disc, a flow control outer ring being slidably mounted on the outer wall of the flow control inner ring, a plurality of circular holes being provided on both the flow control inner ring and the flow control outer ring, and a connecting rod being mounted between the flow control outer ring and the fan blade flipping assembly.

[0007] As a further improvement of the present invention, the fan blade flipping assembly also includes a ring 1, a ring 2 and a spring, and the ring 1, the ring 2 and the spring are all sleeved on the rotating cylinder, and a plurality of fan blade seats are rotatably installed on the ring 1 in an annular array, and each of the fan blades is fixedly installed on the corresponding fan blade seat, and a protrusion rod 1 is fixedly installed on one side of the fan blade seat, and a plurality of protrusion rods 2 are fixedly installed on the ring 2 in an annular array, and a linkage rod is provided between each protrusion rod 1 and the corresponding protrusion rod 2, and the two ends of each linkage rod are respectively connected to the corresponding protrusion rod 1 and protrusion rod 2 through a universal joint, and the spring is arranged between the ring 1 and the ring 2, the middle part of the spring is fixedly connected to the rotating cylinder, and the two ends of the spring are respectively fixedly connected to the ring 1 and the ring 2.

[0008] As a further improvement of the present invention, each of the fan blades is fixedly connected to the fan blade seat by a bolt, a gap is provided between two adjacent fan blades, and a plurality of air holes are evenly provided on the fan blades.

[0009] As a further improvement of the present invention, a slide groove 1 and a slide groove 2 are respectively provided at both ends of the rotating cylinder, the collar 1 slides in cooperation with the slide groove 1, the collar 2 slides in cooperation with the slide groove 2, the length of the slide groove 1 is greater than the length of the slide groove 2, a fixing ring is fixedly installed on one side of the collar 2, a slider is slidably installed on the fixing ring, and one end of the connecting rod is fixedly connected to the slider.

[0010] As a further improvement of the present invention, a guide tail vertebra is fixedly installed in the valve body, a guide sleeve is fixedly installed at one end of the guide tail vertebra, the valve disc is slidably installed in the guide sleeve, one end of the valve disc extends into the flow control inner ring, a valve stem is provided in the guide tail vertebra, one end of the valve stem is fixedly connected to the valve disc, a telescopic cylinder is fixedly installed on the upper end of the valve body, a push rod is provided between the telescopic end of the telescopic cylinder and the valve stem, and both ends of the push rod are rotatably connected to the telescopic end of the telescopic cylinder and the valve stem respectively.

[0011] As a further improvement of the present invention, the valve flap and the guide tail cone together form a teardrop-shaped structure, and the inner contour and the outer contour of the valve body are both streamlined.

[0012] As a further improvement of the present invention, the anti-surge mechanism also includes a fixed rod, which is fixedly installed on one end of the guide tail cone, a motor is fixedly installed inside the fixed rod, a gear is fixedly installed on the output end of the motor, the rotating cylinder is sleeved on the outside of the fixed rod, and the rotating cylinder is connected to the fixed rod through a bearing, a gear ring is fixedly installed on the inner wall of the rotating cylinder, and the gear ring is engaged with the gear.

[0013] As a further improvement of the present invention, a connecting pipe is fixedly installed on the outside of the valve body, and the two ends of the connecting pipe are respectively connected to the two ends of the valve body. A solenoid valve is fixedly installed on the connecting pipe, and pressure sensors are fixedly installed at both ends of the valve body. The detection ends of the two pressure sensors are inserted into the interior of the valve body, and the two pressure sensors and the solenoid valve are electrically connected to the external controller.

[0014] As a further improvement of the present invention, the position of one end of the connecting pipe corresponds to the position of the inner side of the fan blade, the position of the other end of the connecting pipe corresponds to the position of the flow control inner ring, and the positions of the two solenoid valves correspond to the positions of the two ends of the connecting pipe respectively.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention constructs a coordinated mechanism for air pressure regulation at the inlet and outlet ends through the mechanical linkage structure of the anti-surge mechanism and the flow control outer ring. The fan blade flip assembly in the anti-surge mechanism can adaptively adjust the fan blade angle according to the sudden change in gas flow. When the flow drops suddenly, the angle increases, the gas circulation gap is expanded, and the flow at the inlet end is instantly increased. At the same time, the movement of the fan blade assembly drives the flow control outer ring to slide through the connecting rod, so that the misalignment state of the circular holes of the flow control inner ring and the outer ring changes accordingly, and the outlet valve opening is synchronously adjusted. This purely mechanical adaptive adjustment that does not require additional control signals relies on the linkage of the dual mechanisms driven by changes in gas pressure to achieve timely response to sudden changes in flow, significantly enhances the operating stability of the valve under complex working conditions, and avoids the lag and complexity of traditional control systems.

[0017] 2. The present invention introduces an electronically controlled adjustment module on the basis of mechanical adaptive compensation to form a composite anti-surge adjustment system. The fan blade flipping assembly of the anti-surge mechanism realizes passive response to flow changes through mechanical structures such as springs and linkage rods, while the motor-driven rotating cylinder can actively adjust the fan blade speed through the engagement of gears and gear rings, accurately controlling the intake flow rate, and making up for the shortcomings of pure mechanical structures in fine regulation.

[0018] 3. The real-time monitoring system composed of a pressure sensor and a solenoid valve can dynamically adjust the bypass airflow according to the pressure difference at both ends of the valve body, and further accurately balance the air pressure after the initial adjustment of the mechanical linkage. This mode of combining passive response with active intervention not only retains the reliability and simplicity of the mechanical structure, but also adds the accuracy of the electronic control system, constructing a multi-level anti-surge system, which greatly improves the adaptability and control accuracy of the valve under extreme working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of an axial flow anti-surge control valve of the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of an axial flow anti-surge control valve according to the present invention;

[0021] Figure 3 This is a schematic cross-sectional view of the structure of an axial flow anti-surge control valve without a guide tail cone according to the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the fan blade flip assembly of the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the fan blade flip assembly of the present invention in a state without fan blades;

[0025] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0026] Figure 8 This is a schematic planar structural diagram of the fan blade flip assembly of the present invention in a state without fan blades;

[0027] Figure 9 This is a schematic diagram of the cross-section structure of the fan blade flip assembly of the present invention.

[0028] Explanation of the accompanying reference numerals: 1. Valve body; 101. Telescopic cylinder; 102. Connecting pipe; 103. Solenoid valve; 104. Pressure sensor; 105. Guide tail cone; 106. Valve stem; 107. Guide sleeve; 108. Valve disc; 109. Inner flow control ring; 110. Outer flow control ring; 111. Push rod; 2. Anti-surge mechanism; 201. Fixed rod; 202. Rotating cylinder; 203. Ring 1; 204. Ring 2; 205. Spring; 206. Blade seat; 207. Protruding rod 1; 208. Protruding rod 2; 209. Linking rod; 210. Slide groove 1; 211. Slide groove 2; 212. Blade; 213. Fixed ring; 214. Slider; 215. Connecting rod; 216. Gear ring; 217. Motor; 218. Gear. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The components of the embodiments of the present disclosure generally described and shown here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure is not intended to limit the scope of the present disclosure for protection, but merely represents the selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0030] refer to Figures 1 to 4As shown, a specific embodiment of an axial flow anti-surge control valve of the present invention is shown, a valve body 1, a valve disc 108 is slidably installed in the valve body 1, and the valve disc 108 can move back and forth. An anti-surge mechanism 2 is installed at one end of the valve body 1, and this end is the air inlet end of the valve. The anti-surge mechanism 2 includes a rotating cylinder 202 and a fan blade flip assembly. The fan blade flip assembly is sleeved on the rotating cylinder 202, and the fan blade flip assembly is slidably connected to the rotating cylinder 202. The fan blade flip assembly includes a plurality of fan blades 212 arranged in an annular array, and the fan blade flip assembly can adaptively adjust the fan blade 2 according to the wind pressure. 12. When the gas passes through the valve body 1 normally, the angle between the fan blade 212 and the collar 203 is small. When the gas flow rate suddenly decreases, the angle between the fan blade 212 and the collar 203 increases, and the gap between the two adjacent fan blades 212 increases. The flow of gas through the anti-surge mechanism 2 increases, which can effectively prevent the control valve from surging. This adaptive adjustment method does not require additional control signal input, and relies on the pressure change of the gas itself to achieve the adjustment of the fan blade flip angle, so that the valve responds to the change of gas flow rate more promptly and sensitively, greatly improving the operating stability of the valve under complex working conditions. The other end of the valve body 1 is fixedly installed with a flow control inner ring 109, which is the air outlet end of the valve. The flow control inner ring 109 is sleeved on one end of the valve disc 108, and a flow control outer ring 110 is slidably installed on the outer wall of the flow control inner ring 109. The flow control inner ring 109 and the flow control outer ring 110 are both provided with a plurality of circular holes. A connecting rod 215 is installed between the flow control outer ring 110 and the fan blade flip assembly. Under normal conditions, the circular holes on the flow control inner ring 109 completely coincide with the circular holes on the flow control outer ring 110. When the gas passes through the valve body 1 normally, the anti-surge mechanism 2 slides toward the middle of the valve body 1 under the action of air pressure, and drives the flow control outer ring 110 to slide toward the outside of the valve body 1 through the connecting rod 215. The flow control inner ring 109 The circular hole on 9 is misaligned with the circular hole on the flow control outer ring 110. When the gas flow rate suddenly decreases, the anti-surge mechanism 2 is reset under the action of external force, and the flow control outer ring 110 is driven to reset through the connecting rod 215. The overlapping part of the circular hole on the flow control inner ring 109 and the circular hole on the flow control outer ring 110 increases, the valve opening increases, and the pressure at the valve outlet end decreases, which can also effectively prevent the control valve from surging. The anti-surge mechanism 2 and the flow control outer ring 110 form a linkage structure through the connecting rod 215, which realizes the coordinated cooperation of the air pressure regulation at the inlet and outlet ends. The dual mechanisms work together to further enhance the effect of preventing surge, so that the valve can work more stably and reliably when facing sudden changes in gas flow rate. Through the cooperation of the anti-surge mechanism 2 and the flow control outer ring 110, the present invention can timely adjust the air pressure at the inlet and outlet ends of the valve, effectively preventing the occurrence of surge. By utilizing the principles of mechanical linkage and adaptive adjustment, there is no need for a complex control system, which simplifies the overall structure of the valve, reduces manufacturing and maintenance costs, and improves the reliability and practicality of the valve. It is suitable for a variety of fluid control scenarios that require surge prevention.

[0031] In a further embodiment, Figures 5 to 8 As shown, the fan blade flip assembly also includes a ring 1 203, a ring 204 and a spring 205, and the ring 1 203, the ring 204 and the spring 205 are all sleeved on the rotating cylinder 202, and a plurality of fan blade seats 206 are rotatably installed on the ring 1 203 in an annular array, and each of the fan blades 212 is fixedly installed on the corresponding fan blade seat 206, and a protruding rod 1 207 is fixedly installed on one side of the fan blade seat 206, and a plurality of protruding rods 208 are fixedly installed on the ring 2 204 in an annular array, and a linkage rod 209 is provided between each of the protruding rods 1 207 and the corresponding protruding rods 208, and the two ends of each linkage rod 209 are respectively connected to the corresponding protruding rod 1 207 and the protruding rod 2 208 through a universal joint, and the spring 205 is provided between the ring 1 203 and the ring 2 20 4, the middle part of the spring 205 is fixedly connected to the rotating cylinder 202, and the two ends of the spring 205 are fixedly connected to the ring 1 203 and the ring 2 204 respectively. When the gas passes through the valve body 1, the air pressure acts on the fan blade 212, generating a thrust for the fan blade 212 and the ring 1 203 as a whole, and the ring 1 203 approaches the ring 2 204, and the linkage rod 209 acts on the protruding rod 1 207 to push the fan blade seat 206 to rotate, thereby driving the fan blade 212 to flip, and the gap between the two adjacent fan blades 212 is reduced, so that the intake flow is appropriately reduced, and an appropriate limiting structure is set on the ring 1 203, such as a limiting column is set on the ring 1 203, and the position of the limiting column corresponds to the position of any protruding rod 1 207, which limits the rotation range of the fan blade seat 206 to prevent the fan blade 212 from flipping excessively. Each of the fan blades 212 is fixedly connected to the fan blade seat 206 by bolts, and a gap is provided between two adjacent fan blades 212. A plurality of air holes are evenly provided on the fan blades 212 to ensure that the air flow can pass through the air inlet end normally to complete the air intake, and avoid the fan blades 212 blocking the valve air inlet end, resulting in poor airflow.

[0032] The two ends of the rotating cylinder 202 are respectively provided with a slide groove 1 210 and a slide groove 211, the collar 1 203 is slidably matched with the slide groove 1 210, and the collar 204 is slidably matched with the slide groove 211, the length of the slide groove 1 210 is greater than the length of the slide groove 211, and a fixing ring 213 is fixedly installed on one side of the collar 204, and a slider 214 is slidably installed on the fixing ring 213, and one end of the connecting rod 215 is fixedly connected to the slider 214. When the collar 1 203 approaches the collar 2 204 under the action of air pressure, the fan blade turning assembly also moves toward the middle of the valve body 1, so the movement distance of the collar 1 203 is always greater than that of the collar 2 204, and the length of the slide groove 10 is greater than the length of the slide groove 211, which can ensure that the collar 1 203 and the collar 2 204 can move to the maximum extent, that is, ensure the normal movement of the fan blade 212 and the flow control outer ring 110, thereby ensuring the anti-surge effect of the valve.

[0033] In a further embodiment, a guide tail vertebra 105 is fixedly installed in the valve body 1, one end of the guide tail vertebra 105 is fixedly installed with a guide sleeve 107, the valve disc 108 is slidably installed in the guide sleeve 107, one end of the valve disc 108 extends into the flow control inner ring 109, a valve stem 106 is provided in the guide tail vertebra 105, one end of the valve stem 106 is fixedly connected to the valve disc 108, and a telescopic cylinder 101 is fixedly installed on the upper end of the valve body 1, and a telescopic end of the telescopic cylinder 101 is provided between the valve stem 106. There is a push rod 111, the two ends of which are rotatably connected to the telescopic end of the telescopic cylinder 101 and the valve stem 106 respectively. The telescopic cylinder 101 can drive the push rod 111 to push the valve stem 106 to move, thereby driving the valve flap 108 to move along the guide sleeve 107, controlling the length of the valve flap 108 extending into the flow control inner ring 109, and the valve flap 108 can block the circular hole on the flow control inner ring 109. The length of the valve flap 108 extending into the flow control inner ring 109 determines the amount of the circular hole blocked by the valve flap 108, thereby achieving the effect of controlling the valve opening. The valve disc 108 and the guide tail cone 105 together form a teardrop-shaped structure. The inner and outer contours of the valve body 1 are both streamlined, which can greatly reduce the turbulence effect and vortex generation when the fluid passes through, making the fluid flow smoother and reducing the pressure loss by more than 30% compared with traditional valves. It is particularly suitable for scenarios with large flow and low energy consumption requirements, such as water supply and drainage systems and chemical pipelines, and significantly reduces pumping energy consumption. The streamlined flow channel avoids high-speed impact caused by sudden changes in the fluid's direction or cross-section, effectively suppresses cavitation, and at the same time reduces fluid noise, thereby improving system stability and working environment comfort.

[0034] like Figure 9As shown, the anti-surge mechanism 2 also includes a fixed rod 201, which is fixedly mounted on one end of the guide tail cone 105. A motor 217 is fixedly mounted in the fixed rod 201, and a gear 218 is fixedly mounted on the output end of the motor 217. The rotating cylinder 202 is sleeved on the outside of the fixed rod 201, and the rotating cylinder 202 is connected to the fixed rod 201 through a bearing. A gear ring 216 is fixedly mounted on the inner wall of the rotating cylinder 202, and the gear ring 216 is engaged with the gear 218. The gear 218 is driven to rotate by the motor 217, which drives the gear ring 216 to rotate, thereby driving the rotating cylinder 202 to rotate. The fan blades 212 rotate with the rotating cylinder 202, which can increase the air intake of the valve and supplement the airflow blocked by the fan blades 212. At the same time, the speed of the fan blades 212 can control the air intake flow rate. The motor 217 is connected to the control system, and the electronic control precision control capability is superimposed on the mechanical adaptive compensation to form a composite adjustment mode of passive response and active intervention.

[0035] A connecting pipe 102 is fixedly installed on the outside of the valve body 1. The two ends of the connecting pipe 102 are respectively connected to the two ends of the valve body 1. The position of one end of the connecting pipe 102 corresponds to the position of the inner side of the fan blade 212, and the position of the other end of the connecting pipe 102 corresponds to the position of the flow control inner ring 109. A solenoid valve 103 is fixedly installed on the connecting pipe 102. Pressure sensors 104 are fixedly installed at both ends of the valve body 1. The positions of the two solenoid valves 103 correspond to the positions of the two ends of the connecting pipe 102, and the detection ends of the two pressure sensors 104 are interspersed. To the inside of the valve body 1, the two pressure sensors 104 and the solenoid valve 103 are electrically connected to the external controller, and the air pressure at both ends of the valve body 1 is monitored in real time through the pressure sensor 104. The controller adjusts the opening and closing of the solenoid valve 103 according to the air pressure difference at both ends of the valve body 1. When there is an air pressure difference at both ends of the valve body 1, the solenoid valve 103 opens, and the gas flows through the connecting pipe 102 to adjust the air pressure at both ends of the valve body 1. After the anti-surge mechanism 2 and the flow control outer ring 110 adjust the air pressure at both ends of the valve body 1, the air pressure at both ends of the valve body 1 is further accurately adjusted to further achieve the anti-surge effect.

[0036] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present disclosure, which are used to illustrate the technical solutions of the present disclosure, rather than to limit them. The scope of protection of the present disclosure is not limited thereto. Although the present disclosure has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed in the present disclosure, or perform equivalent replacements for some of the technical features therein. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure shall be subject to the scope of protection of the claims.

Claims

1. An axial flow anti-surge control valve, comprising a valve body (1), wherein a valve disc (108) is slidably mounted in the valve body (1), and the valve disc (108) is capable of reciprocating movement, and is characterized in that: An anti-surge mechanism (2) is installed at one end of the valve body (1), the anti-surge mechanism (2) comprising a rotating cylinder (202) and a fan blade flip assembly, the fan blade flip assembly being sleeved on the rotating cylinder (202), the fan blade flip assembly comprising a plurality of fan blades (212) arranged in a circular array, and the fan blade flip assembly being capable of adaptively adjusting the flip angle of the fan blades (212) according to wind pressure; A flow control inner ring (109) is fixedly mounted on the other end of the valve body (1), the flow control inner ring (109) being sleeved on one end of the valve disc (108), a flow control outer ring (110) being slidably mounted on the outer wall of the flow control inner ring (109), a plurality of circular holes being provided on both the flow control inner ring (109) and the flow control outer ring (110), and a connecting rod (215) being mounted between the flow control outer ring (110) and the fan blade flip assembly; The fan blade flip assembly further comprises a collar 1 (203), a collar 2 (204) and a spring (205), wherein the collar 1 (203), the collar 2 (204) and the spring (205) are all sleeved on the rotating cylinder (202), a plurality of fan blade seats (206) are rotatably mounted in an annular array on the collar 1 (203), and each of the fan blades (212) is fixedly mounted on a corresponding fan blade seat (206), a protruding rod 1 (207) is fixedly mounted on one side of the fan blade seat (206), and a plurality of fan blade seats (206) are fixedly mounted in an annular array on the collar 2 (204). The second protruding rod (208) is provided with a linkage rod (209) between each protruding rod (207) and the corresponding protruding rod (208), and the two ends of each linkage rod (209) are respectively connected to the corresponding protruding rod (207) and the protruding rod (208) through a universal joint. The spring (205) is provided between the first collar (203) and the second collar (204), and the middle part of the spring (205) is fixedly connected to the rotating cylinder (202), and the two ends of the spring (205) are respectively fixedly connected to the first collar (203) and the second collar (204).

2. The axial flow anti-surge control valve according to claim 1, characterized in that: Each of the fan blades (212) is fixedly connected to the fan blade seat (206) via a bolt, a gap is provided between two adjacent fan blades (212), and a plurality of air holes are evenly provided on the fan blades (212).

3. The axial flow anti-surge control valve according to claim 1, characterized in that: The two ends of the rotating cylinder (202) are respectively provided with a slide groove 1 (210) and a slide groove 2 (211), the collar 1 (203) is slidably matched with the slide groove 1 (210), the collar 2 (204) is slidably matched with the slide groove 2 (211), the length of the slide groove 1 (210) is greater than the length of the slide groove 2 (211), a fixed ring (213) is fixedly installed on one side of the collar 2 (204), a slider (214) is slidably installed on the fixed ring (213), and one end of the connecting rod (215) is fixedly connected to the slider (214).

4. The axial flow anti-surge control valve according to claim 1, characterized in that: A guide tail vertebra (105) is fixedly installed in the valve body (1), and a guide sleeve (107) is fixedly installed on one end of the guide tail vertebra (105). The valve flap (108) is slidably installed in the guide sleeve (107), and one end of the valve flap (108) extends into the flow control inner ring (109). A valve stem (106) is provided in the guide tail vertebra (105), and one end of the valve stem (106) is fixedly connected to the valve flap (108). A telescopic cylinder (101) is fixedly installed on the upper end of the valve body (1), and a push rod (111) is provided between the telescopic end of the telescopic cylinder (101) and the valve stem (106), and the two ends of the push rod (111) are rotatably connected to the telescopic end of the telescopic cylinder (101) and the valve stem (106), respectively.

5. The axial flow anti-surge control valve according to claim 4, characterized in that: The valve flap (108) and the guide tail cone (105) together form a teardrop-shaped structure, and the inner and outer contours of the valve body (1) are both streamlined.

6. The axial flow anti-surge control valve according to claim 4, characterized in that: The anti-surge mechanism (2) further comprises a fixed rod (201), the fixed rod (201) being fixedly mounted on one end of the guide tail cone (105), a motor (217) being fixedly mounted inside the fixed rod (201), a gear (218) being fixedly mounted on an output end of the motor (217), the rotating cylinder (202) being sleeved on the outside of the fixed rod (201), and the rotating cylinder (202) being connected to the fixed rod (201) via a bearing, a gear ring (216) being fixedly mounted on an inner wall of the rotating cylinder (202), and the gear ring (216) being meshed with the gear (218).

7. The axial flow anti-surge control valve according to claim 1, characterized in that: A connecting pipe (102) is fixedly installed on the outside of the valve body (1), and the two ends of the connecting pipe (102) are respectively connected to the two ends of the valve body (1). A solenoid valve (103) is fixedly installed on the connecting pipe (102). Pressure sensors (104) are fixedly installed on both ends of the valve body (1). The detection ends of the two pressure sensors (104) are inserted into the interior of the valve body (1), and the two pressure sensors (104) and the solenoid valve (103) are electrically connected to an external controller.

8. The axial flow anti-surge control valve according to claim 7, characterized in that: The position of one end of the connecting pipe (102) corresponds to the position of the inner side surface of the fan blade (212), the position of the other end of the connecting pipe (102) corresponds to the position of the flow control inner ring (109), and the positions of the two solenoid valves (103) respectively correspond to the positions of the two ends of the connecting pipe (102).

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