Impact-resistant ultrahigh-pressure exhaust valve

Abstract

The invention belongs to the technical field of high-pressure exhaust valves, and particularly relates to an impact-resistant ultrahigh-pressure exhaust valve which comprises a valve sleeve, an exhaust connector, a rain cover and a fixing bolt, the exhaust connector is arranged at the side end of the valve sleeve, the rain cover is arranged at the side end of the exhaust connector, and the fixing bolt is arranged on the inner side of the exhaust connector. By arranging the pressure reduction flow channel, the bionic sharkskin flow guide wall, the optical fiber sensor, the electrical interface, the anti-vibration valve element sleeve, the limiting sleeve and the belleville spring, when fluid passes through the fluid end interface and climbs towards the interior of the valve sleeve, the three-stage gradually-shrinking channels divided by the pressure reduction flow channel reduce the flow speed of the fluid step by step, and when the fluid passes through the bionic sharkskin flow guide wall, the flow speed of the fluid is reduced. The turbulence intensity is continuously reduced through the bionic sharkskin groove structure, after fluid enters the valve sleeve, the air pressure in the valve sleeve is gradually larger than the external atmospheric pressure, at the moment, the high-speed fluid passing through the overflow hole extrudes the belleville spring, and the floating ball is blocked when making contact with the exhaust connecting port through the generated negative pressure environment.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure exhaust valves, in particular to an impact-resistant ultra-high-pressure exhaust valve. Background Art

[0002] The ultra-high pressure exhaust valve is a key device used to control gas release under extreme pressure environments and is widely used in the fields of petrochemicals, energy and electricity, and aerospace. Its core function is to maintain system pressure balance and prevent equipment from causing safety hazards due to overpressure by quickly and accurately discharging ultra-high pressure gas (usually exceeding 100MPa). The valve is made of high-strength corrosion-resistant materials (such as special alloys or ceramic coatings) and has excellent sealing, impact resistance and high temperature resistance. At the same time, it integrates an intelligent control system to achieve real-time pressure monitoring and adaptive adjustment, ensuring stable operation and long-term durability under complex working conditions.

[0003] The prior art has the following deficiencies: the "ultra-high pressure exhaust valve" with the publication number CN112648431B in the prior art "includes: a main valve: the lower end of which is connected to the pipeline to achieve a large amount of low-pressure exhaust and a large amount of air intake, including a main valve body, a main valve cover installed on the top of the main valve body and having a first exhaust hole, a main valve float assembly installed in the main valve body, and a throttling exhaust assembly installed on the upper part of the main valve cover; a trace exhaust valve group: connected to the main valve to achieve high-pressure automatic exhaust, including a trace exhaust valve group body whose bottom is connected to the lower part of the main valve body and whose upper part is fixed to the main valve body, a trace exhaust valve group valve cover installed on the top of the trace exhaust valve group valve body, a sealing seat arranged on the trace exhaust valve group valve cover to achieve a small amount of exhaust, and a float lever assembly fixed on the trace exhaust valve group valve cover to achieve the opening and closing of the sealing seat".

[0004] The above structure uses high-hard rubber or polymer material polyurethane as the sealing ring for the main valve sealing surface, and the limit plate with a multi-layer stainless steel and graphite plate sandwich structure can also achieve sealing, thereby ensuring the sealing reliability of the valve seal under high pressure. However, the conventional operating pressure of the ultra-high pressure exhaust valve reaches 100MPa, and the flow rate of the high-pressure fluid is greater than 150 / s when passing through the throttle port. When the valve is opened and closed quickly, the high-speed impact of the fluid will cause high-frequency vibration of the valve core. When the amplitude is greater than 50μm, the wear rate will increase sharply, which will greatly reduce the service life of the valve core structure. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an impact-resistant ultra-high pressure exhaust valve, which solves the existing problem that high-frequency vibration caused by high-speed fluid impact on the valve core will aggravate the wear of the valve core and reduce its service life.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an impact-resistant ultra-high pressure exhaust valve, comprising a valve sleeve, an exhaust connection port, a rain shield and a fixing bolt, the exhaust connection port being arranged at the side end of the valve sleeve, the rain shield being arranged at the side end of the exhaust connection port, the fixing bolt being arranged at the inner side of the exhaust connection port, and a rear interface being arranged on the other side of the valve sleeve.

[0007] A pressure-reducing channel is arranged at the side end of the rear interface, an anti-vibration valve core sleeve is arranged inside the valve sleeve, and a floating ball is arranged inside the anti-vibration valve core sleeve.

[0008] The anti-tremor valve core sleeve also includes an overflow hole, a limit sleeve and a disc spring. The overflow hole is opened at the bottom end of the anti-tremor valve core sleeve, the limit sleeve is inserted into the anti-tremor valve core sleeve, and the disc spring is movably connected to the inner side of the limit sleeve.

[0009] In some of the embodiments, six groups of overflow holes are provided, and the anti-tremor valve core sleeve is fixedly installed in the middle of the inner side of the valve sleeve.

[0010] In some of the embodiments, one side of the bottom of the limit sleeve is an open structure, and six groups of block structures are arranged on the outer annular arc surface, and the block structures are inserted into the inner wall of the anti-tremor valve core sleeve.

[0011] In some of the embodiments, the pressure-reducing channel further includes a fiber optic sensor, an electrical interface, a bionic shark skin guide wall and a fluid end interface. The fiber optic sensor is embedded in the inner wall of the pressure-reducing channel. The electrical interface is provided in five groups and fixedly mounted on the side end of the fiber optic sensor.

[0012] In some of the embodiments, the bionic shark skin guide wall is fixedly installed on the inner wall of the pressure reducing channel and is distributed in a ring shape, and the fluid end interface and the pressure reducing channel are integrally die-cast.

[0013] In some of the embodiments, the pressure-reducing channel is divided into three groups of channel structures with different diameters, and arranged in order from small to large diameters, and the plane formed by each group of channel structures maintains the same angle with both ends of the valve sleeve.

[0014] In some of the embodiments, the bionic shark skin guide wall is composed of multiple groups of identical structures, and its single structure imitates the shape of shark skin, with a ridge-like structure in the middle and on both sides protruding outward, and a V-shaped groove (rib-like structure) formed between the asymmetric structures on both sides, and multiple groups of bionic shark skin guide walls are in contact in a way that the rear end covers the tail of the front end.

[0015] In some of the embodiments, the optical fiber sensor has an overall annular structure, and after being embedded in the inner wall of the depressurized flow channel, its surface is lower than the depressurized flow channel, and the electrical interface on the outside of the optical fiber sensor is provided with a 45° inclined surface toward the fluid end interface.

[0016] Compared with the prior art, the present invention provides an impact-resistant ultra-high pressure exhaust valve:

[0017] The impact-resistant ultra-high-pressure exhaust valve is provided with a pressure-reducing flow channel, a bionic shark skin guide wall, a fiber optic sensor, an electrical interface, an anti-tremor valve core sleeve, a limit sleeve and a disc spring. When the structure is used, the operator installs it on the outside of the pipeline through the fluid end interface. When no fluid passes through the fluid end interface under normal conditions, the gas is discharged from the exhaust connection port. When fluid passes through the fluid end interface and climbs up to the inside of the valve sleeve, the three-stage tapered channels divided by the pressure-reducing flow channel cause the fluid to directly impact on the continuously decreasing transverse planes of the three-stage tapered channels, thereby gradually reducing the fluid flow rate. When the fluid passes through the bionic shark skin guide wall, the V-shaped asymmetric grooves formed between the overlapping monomer structures on the bionic shark skin guide wall guide the water flow to produce a directional shear flow, inhibit lateral flow and vortex separation, and keep the fluid in a more stable laminar state on the surface, while the grooves Micron-scale ordered vortices are generated inside, which interact with the mainstream turbulence and weaken the energy of large-scale vortices through viscous dissipation. The groove structure reduces the direct contact area between the fluid and the surface, and reduces the surface shear stress by guiding the direction of the water flow, thereby reducing the turbulence intensity. The fiber optic sensors distributed in an annular position monitor the temperature, stress and deformation in real time through the electrical interface. When the fluid enters the valve sleeve, the air pressure inside the valve sleeve gradually exceeds the external atmospheric pressure. At this time, the high-speed fluid through the overflow hole squeezes the disc spring, and the disc spring lifts the float. Due to the difference in air pressure inside and outside the valve sleeve, the negative pressure environment generated blocks the float when it contacts the exhaust connection port. At this time, the valve is closed. When the fluid water level drops below the float and the pressure inside the valve sleeve is less than or equal to atmospheric pressure, the float falls and resets. At this time, the gas passes through the exhaust connection port normally.

[0018] Through the above settings and processes, the structure can have the following beneficial effects:

[0019] When the valve body structure is in use, the interaction force of the fluid passing through the pressure-reducing flow channel is reduced after the fluid passes through the bionic shark skin guide wall and contacts the groove of the asymmetric structure, thereby reducing the turbulence intensity on the basis of rectification, and the anti-vibration valve core sleeve, disc spring and limit sleeve cooperate to further buffer the fluid with reduced strength, and absorb the energy of the vibration of the valve core part through the contraction of the disc spring. In this process, the internal information of the valve sleeve is monitored in real time by the optical fiber sensor. Compared with the existing ultra-high pressure exhaust valve, it can effectively suppress the high-intensity vibration of the valve core from the fluid, thereby reducing the impact and high-frequency vibration wear of the valve core, and improving the reliability and service life of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of one side of the fluid end interface of the present invention;

[0022] Figure 3 This is a schematic diagram of the decompression channel and the optical fiber sensor of the present invention in a disassembled state;

[0023] Figure 4 This is a schematic diagram of the installation position of the anti-tremor valve core sleeve of the present invention;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the pressure-reducing flow channel and the bionic shark skin guide wall of the present invention;

[0025] Figure 6 It is a schematic diagram of the anti-trembling valve core sleeve and the internal structure of the present invention in a disassembled state;

[0026] Figure 7 It is a schematic diagram of the installation position of the disc spring and the limiting sleeve of the present invention.

[0027] In the figure: 1. valve sleeve; 2. exhaust connection port; 3. rain shield; 4. fixing bolt; 5. rear interface; 6. pressure reducing channel; 601. optical fiber sensor; 602. electrical interface; 603. bionic shark skin guide wall; 604. fluid end interface; 7. anti-tremor valve core sleeve; 701. overflow hole; 702. limit sleeve; 703. disc spring; 8. float. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In this embodiment: an impact-resistant ultra-high pressure exhaust valve comprises a valve sleeve 1, an exhaust connection port 2, a rain shield 3 and a fixing bolt 4, the exhaust connection port 2 is arranged at the side end of the valve sleeve 1, the rain shield 3 is arranged at the side end of the exhaust connection port 2, the fixing bolt 4 is arranged on the inner side of the exhaust connection port 2, and a rear interface 5 is arranged on the other side of the valve sleeve 1.

[0032] A pressure reducing channel 6 is arranged at the side end of the rear interface 5 , an anti-vibration valve core sleeve 7 is arranged inside the valve sleeve 1 , and a floating ball 8 is arranged inside the anti-vibration valve core sleeve 7 .

[0033] The anti-tremor valve core sleeve 7 also includes an overflow hole 701, a limit sleeve 702 and a disc spring 703. The overflow hole 701 is opened at the bottom end of the anti-tremor valve core sleeve 7, the limit sleeve 702 is inserted into the anti-tremor valve core sleeve 7, and the disc spring 703 is movably connected to the inner side of the limit sleeve 702.

[0034] In this embodiment, six groups of overflow holes 701 are opened, and the anti-tremor valve core sleeve 7 is fixedly installed in the middle of the inner side of the valve sleeve 1; the bottom side of the limiting sleeve 702 is an open structure, and six groups of block structures are arranged on the outer annular arc surface, and the block structure is inserted into the inner wall of the anti-tremor valve core sleeve 7.

[0035] Specifically, Figure 4 and Figure 6 As shown, the six groups of overflow holes 701 enable the fluid to pass through the anti-trembling valve core sleeve 7 evenly and stably when entering the valve sleeve 1, and the six groups of block structures arranged outside the limit sleeve 702 ensure the stability of the limit sleeve 702 under high pressure.

[0036] In this embodiment, the pressure-reducing channel 6 also includes a fiber optic sensor 601, an electrical interface 602, a bionic shark skin guide wall 603 and a fluid end interface 604. The fiber optic sensor 601 is embedded in the inner wall of the pressure-reducing channel 6. The electrical interface 602 is provided in five groups and is fixedly installed on the side end of the fiber optic sensor 601. The bionic shark skin guide wall 603 is fixedly installed on the inner wall of the pressure-reducing channel 6 and is distributed in a ring shape. The fluid end interface 604 and the pressure-reducing channel 6 are integrally die-cast.

[0037] Specifically, Figure 1 , Figure 2as well as Figure 5 As shown, after the fluid passes through the bionic shark skin guide wall 603, the turbulence intensity is reduced by 40%, and the optical fiber sensor 601 and the electrical interface 602 collect the internal information of the valve body with an accuracy of ±0.1%;

[0038] It should be noted that when the fluid passes through the bionic shark skin guide wall 603, the directional shear flow generated by the grooves guiding the water flow reduces the fluid boundary layer thickness by 15%, and the groove structure reduces the direct contact area of ​​the fluid and the comprehensive resistance is reduced by 10% compared with the smooth surface.

[0039] In the present embodiment, the pressure reducing channel 6 is divided into three groups of channel structures with different diameters as a whole, and are arranged in order from small to large in diameter, and the plane formed by each group of channel structures maintains the same angle with the two ends of the valve sleeve 1; the bionic shark skin guide wall 603 is composed of a plurality of groups of identical structures, and its monomer structure imitates the shape of shark skin, with a ridge-like structure in the middle and on both sides protruding outward, and a V-shaped groove (rib-like structure) is formed between the asymmetric structures on both sides, and the plurality of groups of bionic shark skin guide walls 603 are in contact in a manner that the rear end covers the front end tail; the optical fiber sensor 601 is annular in structure as a whole, and its surface is lower than the pressure reducing channel 6 after being embedded in the inner wall of the pressure reducing channel 6, and the electrical interface 602 on the outside of the optical fiber sensor 601 is provided with a 45° inclined surface toward the side of the fluid end interface 604.

[0040] Specifically, Figure 3 , Figure 5 as well as Figure 7 As shown, the tapered channels of different diameters inside the pressure-reducing channel 6 limit the flow velocity step by step, with each stage reducing the pressure by 30%, and the final flow velocity does not exceed 80 m / s. The groove structure of the bionic shark skin guide wall 603 can lift the vortex and make it stay above the groove ridge, thereby reducing the velocity gradient and velocity pulsation in the groove, and the wall shear stress is also reduced accordingly.

[0041] The working principle and use process of the present invention are as follows: when the structure is used, the operator installs it on the outside of the pipeline through the fluid end interface 604. Under normal conditions, when no fluid passes through the fluid end interface 604, the gas is discharged from the exhaust connection port 2. When fluid passes through the fluid end interface 604 and rises to the inside of the valve sleeve 1, the three-level tapered channels divided by the pressure-reducing flow channel 6 gradually reduce the fluid flow rate. When the fluid passes through the bionic shark skin guide wall 603, the bionic shark skin groove structure continuously reduces the turbulence intensity. The optical fiber sensor 601 distributed in the annular position is connected to the electrical interface 603. 02 Real-time monitoring of temperature, stress and deformation. When the fluid enters the valve sleeve 1, the internal air pressure of the valve sleeve 1 gradually exceeds the external atmospheric pressure. At this time, the high-speed fluid through the overflow hole 701 squeezes the disc spring 703, and the disc spring 703 lifts the float 8. Due to the difference in air pressure inside and outside the valve sleeve 1, the negative pressure environment generated blocks the float 8 when it contacts the exhaust connection port 2. At this time, the valve is closed. When the fluid water level drops below the float 8 and the internal pressure of the valve sleeve 1 is less than or equal to the atmospheric pressure, the float 8 falls and resets. At this time, the gas passes through the exhaust connection port 2 normally.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An impact-resistant ultra-high pressure exhaust valve, comprising a valve sleeve (1), an exhaust connection port (2), a rain shield (3) and a fixing bolt (4), wherein the exhaust connection port (2) is arranged at a side end of the valve sleeve (1), the rain shield (3) is arranged at a side end of the exhaust connection port (2), the fixing bolt (4) is arranged inside the exhaust connection port (2), and a rear interface (5) is arranged on the other side of the valve sleeve (1), characterized in that: A pressure-reducing flow channel (6) is arranged at the side end of the rear interface (5), an anti-vibration valve core sleeve (7) is arranged inside the valve sleeve (1), and a floating ball (8) is arranged inside the anti-vibration valve core sleeve (7); The anti-tremor valve core sleeve (7) also includes an overflow hole (701), a limit sleeve (702) and a disc spring (703), wherein the overflow hole (701) is opened at the bottom end of the anti-tremor valve core sleeve (7), the limit sleeve (702) is inserted into the interior of the anti-tremor valve core sleeve (7), and the disc spring (703) is movably connected to the inner side of the limit sleeve (702).

2. The impact-resistant ultra-high pressure exhaust valve according to claim 1, characterized in that: The overflow holes (701) are provided in six groups, and the anti-vibration valve core sleeve (7) is fixedly installed in the middle of the inner side of the valve sleeve (1).

3. The impact-resistant ultra-high pressure exhaust valve according to claim 1, characterized in that: One side of the bottom of the limiting sleeve (702) is an open structure, and six groups of block structures are arranged on the outer annular arc surface, and the block structures are plugged into the inner wall of the anti-tremor valve core sleeve (7).

4. The impact-resistant ultra-high pressure exhaust valve according to claim 1, characterized in that: The pressure-reducing flow channel (6) further comprises an optical fiber sensor (601), an electrical interface (602), a bionic shark skin guide wall (603) and a fluid end interface (604); the optical fiber sensor (601) is embedded in the inner wall of the pressure-reducing flow channel (6); and the electrical interface (602) is provided in five groups and is fixedly mounted on the side end of the optical fiber sensor (601).

5. The impact-resistant ultra-high pressure exhaust valve according to claim 4 is characterized in that: The bionic shark skin guide wall (603) is fixedly mounted on the inner wall of the pressure reducing flow channel (6) and is distributed in a ring-shaped position. The fluid end interface (604) and the pressure reducing flow channel (6) are integrally die-cast.

6. The impact-resistant ultra-high pressure exhaust valve according to claim 4, characterized in that: The pressure-reducing flow channel (6) is divided into three groups of flow channel structures with different diameters as a whole, and is arranged in order from small to large diameters. The plane formed by each group of flow channel structures maintains the same angle with the two ends of the valve sleeve (1).

7. The impact-resistant ultra-high pressure exhaust valve according to claim 4, characterized in that: The bionic shark skin guide wall (603) is composed of a plurality of groups of identical structures. The monomer structure imitates the shape of shark skin, with the middle and two sides forming a ridge-like structure protruding outward, and a V-shaped groove (rib-like structure) formed between the asymmetric structures on both sides. The plurality of groups of bionic shark skin guide walls (603) are in contact in a manner that the rear end covers the tail of the front end.

8. The impact-resistant ultra-high pressure exhaust valve according to claim 4, characterized in that: The optical fiber sensor (601) is annular in structure as a whole. After being embedded in the inner wall of the pressure reducing channel (6), its surface is lower than the pressure reducing channel (6). The electrical interface (602) on the outside of the optical fiber sensor (601) is provided with a 45° inclined surface facing the fluid end interface (604).

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