An angle type regulating valve for high-pressure vessel discharge

Abstract

The utility model relates to a kind of angle type regulating valve for autoclave discharge, it includes valve body and valve seat, valve core subassembly;The valve core subassembly is integrated composite structure, it includes plug valve core, plane seal ring and valve core fixing piece;The upper end surface of the valve seat is a valve seat sealing surface matched with the lower end surface of the plane seal ring, when the valve core subassembly goes down, the plane seal ring and the valve seat form plane seal by sticking together.This angle type regulating valve designs plug valve core for throttling and plane seal ring for sealing as split type, and is combined into composite valve core, realizes flexible surface contact shutdown using plane seal ring, completely solves the problem that hard material cone face seal is easy to break under high pressure;And the introduction of multilayer V-shaped packing, realize self-tight sealing using medium pressure, significantly enhance the reliability and life of valve rod dynamic seal, ensure the safe, stable and accurate operation of valve under severe working conditions.

Description

Technical Field

[0001] This utility model relates to the field of fluid control equipment technology, specifically to an angle regulating valve for high-pressure autoclave discharge. Background Technology

[0002] In high-pressure chemical and metallurgical processes, such as autoclave material discharge and acidic medium regulation, high performance requirements are placed on control valves. Traditional angle control valves generally suffer from the following problems when dealing with such high-temperature, high-pressure, highly corrosive, or potentially solid particle-containing media:

[0003] 1. The sealing surface is easily damaged and the sealing life is short: In order to meet the requirements of corrosion resistance and erosion resistance, the valve core and seat are often made of hard alloys such as silicon carbide or ceramic materials. However, these materials have poor toughness and are brittle. Under huge pressure difference and particle impact, the traditional conical sealing surface is prone to stress concentration, which leads to the sealing surface cracking and fragmentation, causing internal leakage of the valve, and in severe cases, it may even be unable to shut off.

[0004] 2. High risk of valve stem dynamic seal failure: High pressure medium exerts extreme pressure and wear on valve stem packing. Conventional packing structures are easily crushed or worn out under high pressure, leading to leakage of toxic, harmful, and highly corrosive media from the valve stem, which not only pollutes the environment but also poses a threat to the safety of on-site personnel and equipment.

[0005] 3. Poor regulation stability and easy valve core vibration: When high-pressure medium flows through the valve core, it will generate a strong lateral force. If the guide structure of the valve core is poorly designed, it will cause the valve core to vibrate or swing violently during the movement. This not only affects the accurate regulation of flow, but long-term vibration will also aggravate the wear of valve internals and shorten the overall service life of the valve. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an angle regulating valve for high pressure reactor discharge. By designing a composite valve core structure, the throttling function and sealing function are separated, and a planar sealing method is adopted to effectively avoid the risk of brittle sealing surface breakage under high pressure differential. At the same time, combined with multi-layer V-shaped self-tightening packing, the dynamic sealing reliability of the valve stem under high pressure is greatly improved, the whole machine structure is stable, and the adjustment is precise.

[0007] To solve the above-mentioned technical problems, this angle regulating valve for high-pressure reactor discharge includes a valve body with mutually perpendicular inlet and outlet flow channels, and a valve seat and valve core assembly disposed within the valve body. The valve core assembly is driven by a valve stem to selectively engage or disengage from the valve seat. The valve core assembly is an integral composite structure, including a plug-shaped valve core for regulating flow, a planar sealing ring coaxially disposed outside the plug-shaped valve core, and a valve core fixing member for fixing the plug-shaped valve core and the planar sealing ring together. The upper end face of the valve seat is a valve seat sealing surface that mates with the lower end face of the planar sealing ring. When the valve core assembly moves downward, the planar sealing ring fits against the valve seat to form a planar seal.

[0008] Furthermore, the valve core fixing component includes a connecting base integrally formed with the bottom of the valve stem, and an inner fixing sleeve and an outer fixing sleeve that secure the plug-shaped valve core and the planar sealing ring to the connecting base by fasteners.

[0009] Furthermore, the plug-shaped valve core is an inverted bullet-shaped structure with a streamlined, tapering head.

[0010] In an optimized configuration, a guide sleeve is fixedly disposed above the valve body to guide the reciprocating motion of the valve core assembly.

[0011] Furthermore, the valve body is provided with a stuffing box assembly for achieving a dynamic seal between the valve stem and the valve body. The stuffing box assembly is provided with at least two sets of packing rings with a V-shaped cross section, and the packing rings are stacked along the axial direction of the valve stem.

[0012] Specifically, the upper end of the valve stem is connected to an actuator for providing linear driving force.

[0013] This utility model discloses an angle regulating valve for high-pressure reactor discharge. By designing the plug-shaped valve core for throttling and the flat sealing ring for sealing as separate parts and combining them into a composite valve core, the flat sealing ring achieves flexible surface contact shut-off, completely solving the problem of easy breakage of hard material conical seals under high pressure. The introduction of multi-layer V-shaped packing utilizes the medium pressure to achieve self-tightening sealing, significantly enhancing the reliability and lifespan of the valve stem dynamic seal, ensuring the safe, stable and accurate operation of the valve under harsh working conditions. Attached Figure Description

[0014] The following description, in conjunction with the accompanying drawings, further illustrates an angle regulating valve for high-pressure reactor discharge according to this utility model:

[0015] Figure 1 This is a schematic diagram of the main longitudinal section of the angle regulating valve for discharge from this autoclave;

[0016] Figure 2 yes Figure 1A magnified view of the structure at part A in the middle;

[0017] Figure 3 yes Figure 1 A magnified view of the structure at part B in the middle section.

[0018] In the picture:

[0019] 1-Valve body;

[0020] 2-Valve seat;

[0021] 3-Valve core assembly; 31-Plug-shaped valve core, 32-Flat sealing ring, 33-Valve core fixing component; 331-Connecting base, 332-Inner fixing sleeve, 333-Outer fixing sleeve;

[0022] 4-Valve stem;

[0023] 5-Guide sleeve;

[0024] 6- Stuffing gland assembly; 61- V-shaped packing ring;

[0025] 7-Executive agency. Detailed Implementation

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] In the description of this utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The present invention will be further described below with specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments.

[0029] Implementation method 1: such as Figure 1 , 2As shown, this angle regulating valve for high-pressure reactor discharge includes a valve body 1 with mutually perpendicular inlet and outlet flow channels, a valve seat 2 and a valve core assembly 3 disposed within the valve body 1. The valve core assembly 3 is driven by a valve stem 4 to selectively engage or disengage from the valve seat 2. The core of the design lies in the fact that the valve core assembly 3 is an integral composite structure, comprising a plug-shaped valve core 31 for regulating flow, a planar sealing ring 32 coaxially disposed outside the plug-shaped valve core 31, and a valve core fixing member 33 for fixing the two together. The upper end face of the valve seat 2 is a flat valve seat sealing surface, which mates with the lower end face of the planar sealing ring 32. This design cleverly separates the regulating and sealing functions. The main throttling task is undertaken by the hard and erosion-resistant plug-shaped valve core 31, while the final shut-off is accomplished by the smooth surface contact between the flat sealing ring 32 and the valve seat 2. The force is evenly distributed, which completely avoids the stress concentration problem of traditional conical seals. Even when using brittle materials such as silicon carbide, the integrity and reliability of the seal can be guaranteed.

[0030] Implementation method 2: such as Figure 2 As shown, the structure of the valve core fixing component 33 of the angle regulating valve for high-pressure reactor discharge is further optimized. It includes a connecting base 331 integrally formed with the bottom of the valve stem 4, and an inner fixing sleeve 332 and an outer fixing sleeve 333 that secure the plug-shaped valve core 31 and the flat sealing ring 32 to the connecting base 331 by fasteners. This "sandwich" clamping structure can provide a strong and uniform preload, ensuring that the plug-shaped valve core 31 and the flat sealing ring 32 maintain a stable integrated connection with the valve stem 4 under severe fluid scouring and high pressure, without loosening or displacement, thus ensuring the overall rigidity and motion accuracy of the valve core assembly 3. The plug-shaped valve core 31 is designed with a streamlined, tapering bullet-shaped structure at the head. This structure facilitates smooth fluid guidance, reduces eddies and noise, and makes the flow regulation process smoother and more linear. The remaining structures and components are as described in Embodiment 1 and will not be repeated.

[0031] Implementation method 3: such as Figure 1 , 3 As shown, a guide sleeve 5 is fixedly installed above the valve body 1 of the angle regulating valve for high-pressure reactor discharge to guide the reciprocating motion of the valve core assembly 3. The guide sleeve 5 has a large guiding surface, which can effectively counteract the unbalanced force exerted on the valve core assembly 3 by the high-pressure fluid, ensuring that it moves strictly vertically along the axial direction throughout the entire stroke, eliminating jamming and vibration, thereby significantly improving the valve's regulating accuracy and operational stability. The remaining structures and components are as described in Embodiment 2 and will not be repeated.

[0032] Implementation method 4: such as Figure 3As shown, the valve body 1 of this high-pressure reactor discharge angle regulating valve is equipped with a stuffing box assembly 6 for achieving a dynamic seal between the valve stem 4 and the valve body 1. The sealing element filled within this assembly has at least two sets of packing rings 61 with a V-shaped cross-section, and the packing rings 61 are stacked along the axial direction of the valve stem 4. The V-shaped structure has a unique self-tightening sealing effect; the higher the medium pressure, the wider the V-shaped opening is opened, and the stronger the adhesion force of its lip to the valve stem 4 and the inner wall of the stuffing box, thus forming an extremely reliable dynamic seal. The use of double or multiple layers further enhances the sealing performance redundancy, effectively preventing medium leakage even under ultra-high pressure conditions and ensuring production safety. The remaining structures and components are as described in Embodiment 3 and will not be repeated.

[0033] Implementation method 5: such as Figure 1 As shown, the upper end of the valve stem 4 of the angle regulating valve for high-pressure reactor discharge is connected to an actuator 7 for providing linear driving force. The actuator can be pneumatic, electric, hydraulic, or mechanically operated, with an electric actuator being preferred. It can receive control signals and output precise thrust or pull force to drive the entire valve core assembly 3 to achieve precise displacement control, thereby completing the automated regulation of the pipeline medium flow rate. The remaining structures and components are as described in Embodiment 4 and will not be repeated.

[0034] During operation: When flow regulation is required, the external actuator 7 drives the valve stem 4 downward, which in turn drives the entire valve core assembly 3 smoothly downward. Throughout this process, the fixed guide sleeve 5 provides stable guidance for the valve core assembly 3, preventing it from wobbling. The bottom end of the valve core assembly 3, the bullet-shaped plug-like valve core 31, first enters the throat of the valve seat 2. Its streamlined profile begins to throttle the fluid; the smaller the opening, the stronger the throttling effect. When the valve needs to be completely closed, the actuator 7 continues to push the valve stem 4 downward until the flat sealing ring 32 on the valve core assembly 3 is fully engaged with the upper surface of the valve seat 2, forming a reliable surface contact seal and completely cutting off the flow of media. Throughout the entire reciprocating motion, the valve stem 4 is always tightly wrapped by the multiple layers of V-shaped packing rings 61 within the stuffing box assembly 6, ensuring that the high-pressure medium is firmly locked inside the valve body 1 and cannot leak out. This entire design fundamentally solves the sealing and stability problems of traditional valves under harsh operating conditions.

[0035] This angle regulating valve for high-pressure reactor discharge is designed as a separate unit, combining the plug-shaped valve core for throttling and the flat sealing ring for sealing into a composite valve core. The flat sealing ring achieves flexible surface contact shut-off, completely solving the problem of easy breakage of hard material conical seals under high pressure. The introduction of multi-layer V-shaped packing utilizes the medium pressure to achieve self-tightening sealing, significantly enhancing the reliability and lifespan of the valve stem dynamic seal, ensuring the safe, stable, and accurate operation of the valve under harsh working conditions.

[0036] The above description illustrates the main features, basic principles, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments or examples described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments or examples should be considered exemplary and not restrictive. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An angle regulating valve for discharge from a high-pressure autoclave, characterized in that: The valve body (1) includes an inlet flow channel and an outlet flow channel that are perpendicular to each other, and a valve seat (2) and a valve core assembly (3) disposed within the valve body (1), wherein the valve core assembly (3) is driven by a valve stem (4) to selectively engage or disengage from the valve seat (2); characterized in that the valve core assembly (3) is an integral composite structure. The valve core assembly (3) includes a plug-shaped valve core (31) for regulating flow, a planar sealing ring (32) coaxially disposed on the outside of the plug-shaped valve core (31), and a valve core fixing member (33) for fixing the plug-shaped valve core (31) and the planar sealing ring (32) together; the upper end face of the valve seat (2) is a valve seat sealing surface that mates with the lower end face of the planar sealing ring (32). When the valve core assembly (3) moves downward, the planar sealing ring (32) fits against the valve seat (2) to form a planar seal. The valve core fixing component (33) includes a connecting base (331) integrally formed with the bottom of the valve stem (4), and an inner fixing sleeve (332) and an outer fixing sleeve (333) that fasten the plug-shaped valve core (31) and the flat sealing ring (32) to the connecting base (331) by fasteners.

2. The angle regulating valve for high-pressure reactor discharge according to claim 1, characterized in that: The plug-shaped valve core (31) is an inverted bullet-shaped structure with a streamlined, tapering head.

3. The angle regulating valve for high-pressure reactor discharge according to claim 2, characterized in that: A guide sleeve (5) is fixedly installed above the valve body (1) to guide the reciprocating motion of the valve core assembly (3).

4. The angle regulating valve for high-pressure reactor discharge according to claim 3, characterized in that: The valve body (1) is provided with a stuffing box assembly (6) for achieving dynamic sealing between the valve stem (4) and the valve body (1). The stuffing box assembly (6) is provided with at least two sets of packing rings (61) with V-shaped cross sections, and the packing rings (61) are stacked along the axial direction of the valve stem (4).

5. The angle regulating valve for high-pressure reactor discharge according to claim 4, characterized in that: The upper end of the valve stem (4) is connected to an actuator (7) for providing linear driving force.

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