Regulating ball valve

Abstract

The application relates to the technical field of valves, and discloses a regulating ball valve, which comprises a valve body, a valve core and a flow regulating assembly; the valve body is provided with a first flow channel; the valve core is rotatably arranged in the valve body to regulate the flow of fluid flowing through the first flow channel; the flow regulating assembly is arranged in the first flow channel; the valve body is provided with a first limiting portion and a first inner surface, the first limiting portion protrudes from the first inner surface, the first limiting portion and the first inner surface sandwich a first corner space, the flow regulating assembly comprises a flow regulating plate, a first valve seat and a first sealing ring, the first sealing ring is arranged in the first corner space, along the axial direction of the first sealing ring, the two ends of the first sealing ring are respectively abutted against the first valve seat and the first limiting portion, along the radial direction of the first sealing ring, the inner end of the first sealing ring is abutted against the flow regulating plate, and the outer end of the first sealing ring is abutted against the first inner surface. The regulating ball valve improves the reliability.

Description

Technical Field

[0001] This application relates to the field of valve technology, and more particularly to a regulating ball valve. Background Technology

[0002] Ball valves, as a commonly used shut-off valve, are widely used in many fields such as petroleum, chemical, power, metallurgy, and construction. Their function is to conduct, cut off, or regulate the flow of fluid in the pipeline by rotating the valve core.

[0003] However, in related technologies, the sealing ring of ball valves is prone to fatigue failure, which reduces the reliability of ball valves. Therefore, how to improve the reliability of ball valves is a technical problem that urgently needs to be solved. Utility Model Content

[0004] This application provides a regulating ball valve that improves the reliability of the regulating ball valve.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include:

[0006] In a first aspect, embodiments of this application provide a regulating ball valve, including a valve body, a valve core, and a flow regulating assembly; the valve body has a first flow channel; the valve core is rotatably disposed on the valve body to regulate the flow rate of fluid flowing through the first flow channel; the flow regulating assembly is disposed on the first flow channel; wherein, the valve body has a first limiting portion and a first inner surface, the first limiting portion protruding from the first inner surface, the first limiting portion and the first inner surface forming a first corner space, the flow regulating assembly includes a flow regulating plate, a first valve seat, and a first sealing ring, the first sealing ring being disposed on the first corner space, along the axial direction of the first sealing ring, both ends of the first sealing ring abutting against the first valve seat and the first limiting portion respectively, along the radial direction of the first sealing ring, the inner end of the first sealing ring abutting against the flow regulating plate, and the outer end of the first sealing ring abutting against the first inner surface.

[0007] The regulating ball valve proposed in this application tightens the first sealing ring from multiple directions, which allows the first sealing ring to fully fill the gaps in the corner space, reducing the possibility of fluid leakage from the sealing interface. If vibration or pressure fluctuations occur during equipment operation, the multi-directional tightening can keep the first sealing ring in a compressed state, avoiding seal failure caused by relaxation due to force in one direction. At the same time, multi-directional tightening means that the force on the first sealing ring is borne by multiple components, avoiding damage to a single component due to concentrated force, and extending the service life of the sealing assembly.

[0008] Optionally, the flow regulating plate has a first outer peripheral surface, and a first valve seat is sleeved on the first outer peripheral surface, the first outer peripheral surface being constructed as a first conical surface.

[0009] In the above scheme, when the first valve seat is subjected to medium pressure towards the first sealing ring, the first conical surface can block the first valve seat from moving axially, thereby preventing the first valve seat from excessively compressing the first sealing ring. In other words, the first outer circumferential surface can limit the first valve seat, thereby strictly controlling the compression of the first sealing ring within the design range. This avoids excessive compression of the first sealing ring caused by excessive medium pressure in traditional sealing structures, thus avoiding excessive filling rate, reducing the occurrence of fatigue of the first sealing ring, and increasing the life of the sealing ring.

[0010] Optionally, along the axial direction of the first sealing ring, the first conical surface has a first end and a second end, the first end being closer to the valve core than the second end, and the outer diameter of the first conical surface gradually increases from the first end to the second end.

[0011] In the above scheme, since the first conical surface gradually contracts from the second end to the first end, this setting can not only compress the first sealing ring, making the first conical surface fit tightly with the first sealing ring and subjecting the first sealing ring to a certain pre-tightening force to enhance the sealing effect, but also provide a certain support and limiting effect for the first valve seat, preventing the first valve seat from excessively compressing the first sealing ring.

[0012] Optionally, the cone angle of the first conical surface is 20°-30°.

[0013] In the above scheme, since the cone angle of the first conical surface meets the above range, on the one hand, it can fit tightly with the first sealing ring, providing sufficient pre-tightening force to the first sealing ring, improving the sealing effect, reducing the probability of leakage caused by poor sealing surface fit, and at the same time, it can provide sufficient compressive force to the sealing ring when the first valve seat compresses the first sealing ring, improving the dynamic sealing effect. On the other hand, it can provide sufficient installation space for the first sealing ring, reducing the probability of rapid fatigue failure caused by excessive compression of the first sealing ring, reducing the fatigue wear rate of the first sealing ring, and improving the service life of the first sealing ring.

[0014] Optionally, the first valve seat has a first inner circumferential surface that fits against the first outer circumferential surface, and the first inner circumferential surface is constructed as a second conical surface.

[0015] In the above scheme, since the first inner circumferential surface is constructed as a second conical surface, on the one hand, it can provide sufficient installation space for the flow regulating plate, increase the contact area between the first valve seat and the flow regulating plate, thereby improving the sealing effect and reducing the probability of fluid medium leakage. At the same time, it can improve the uniformity of contact stress between the first valve seat and the flow regulating plate, reducing the probability of local excessive wear. On the other hand, it can provide sufficient installation space for the first sealing ring, reducing the probability of rapid fatigue failure caused by excessive compression of the first sealing ring, reducing the fatigue wear rate of the first sealing ring, and improving the service life of the first sealing ring.

[0016] Optionally, the first valve seat has a first outer surface that abuts against the first sealing ring along the axial direction of the first sealing ring, and the first outer surface is planar.

[0017] In the above scheme, the planar structure enables the first valve seat and the first sealing ring to form a large-area uniform contact in the axial direction, avoiding stress concentration caused by point / line contact. When the first valve seat is subjected to axial preload, the planar design can uniformly transfer the load to the first sealing ring, ensuring that the compression at each point along the axial direction is consistent, thereby forming a continuous and reliable sealing line.

[0018] Optionally, the end of the flow regulating plate facing the valve core is constructed as an arc-shaped surface, which is suitable for mating with the valve core.

[0019] In the above scheme, the end structure of the flow regulating plate is an arc-shaped concave shape facing the valve core, which allows the valve core and the flow regulating plate to make contact through the curved surface. On the one hand, it can reduce the gap between the valve core and the flow regulating plate, reducing the probability of fluid medium leakage from the valve core and the flow regulating plate. On the other hand, it allows the fluid medium to flow directly from the valve core to the flow regulating plate, reducing the pressure loss and the probability of eddy current generation caused by abrupt changes in the flow path.

[0020] Optionally, the flow regulating plate further includes a first protrusion, which is located at the end of the flow regulating plate away from the valve core along the axial direction of the first sealing ring, and is engaged with the inner side of the first limiting portion.

[0021] In the above scheme, the first protrusion extends along the axial direction of the first flow channel and forms an annular structure, providing more mounting positions for the flow regulating plate, which facilitates the installation and fixing of the flow regulating plate. At the same time, the first protrusion can help to install and fix the flow regulating plate, which helps to reduce the axial and radial movement of the flow regulating plate.

[0022] Optionally, the regulating ball valve further includes a second valve seat and a second sealing ring, and the valve body also has a second limiting part and a second inner surface. The second limiting part protrudes from the second inner surface and is sandwiched between the second valve seat and the second limiting part along the axial direction of the second sealing ring.

[0023] In the above scheme, the second sealing ring is sandwiched between the second valve seat and the second limiting part, forming a bidirectional pressing along the axial direction so that the second sealing ring is uniformly compressed in the axial direction, forming a stable sealing surface, preventing fluid from leaking from the axial gap. At the same time, if the first sealing ring leaks due to aging or wear, the second sealing ring can act as a sealing barrier to prevent media leakage.

[0024] Optionally, the second valve seat includes a first section and a second section connected together. Along the axial direction of the second sealing ring, the second sealing ring is sandwiched between the first section and the second limiting portion. Along the radial direction of the second sealing ring, the second sealing ring is located between the second section and the second inner surface.

[0025] In the above scheme, the axial force is directly transmitted from the first section to the end face of the second sealing ring, and the radial force is squeezed by the second section to the outside of the second sealing ring. This avoids excessive force in one direction, thereby limiting the deformation range of the second sealing ring. At the same time, it also helps to ensure that the axial compression of the second sealing ring is uniform, which helps to improve the service life of the second sealing ring. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of some embodiments of this application;

[0028] Figure 2 This is a schematic top view of the overall structure of some embodiments of this application;

[0029] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0030] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0031] Figure 5 This is a schematic diagram of the flow regulating plate in some embodiments of this application;

[0032] Figure 6 This is a front view schematic diagram of the flow regulating plate in some embodiments of this application;

[0033] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure along the CC direction.

[0034] [Explanation of Labels in the Attached Image]

[0035] 100: Valve body; 100a: First corner space; 101: First inner surface; 102: Second inner surface; 110: First flow channel; 120: First limiting part; 121: Second positioning part; 130: Second limiting part;

[0036] 200: Valve core;

[0037] 300: Flow regulating component; 311: First outer peripheral surface; 311a: First conical surface; 311b: First end; 311c: Second end; 314: Arc-shaped surface;

[0038] 330: First protrusion;

[0039] 340: First positioning section;

[0040] 400: First valve seat; 401: First outer surface; 410: First inner circumferential surface; 411: Second conical surface;

[0041] 500: First sealing ring;

[0042] 600: Flow regulating plate;

[0043] 700: Second valve seat; 701: First stage; 702: Second stage;

[0044] 800: Second sealing ring;

[0045] X1: Axial direction of the first sealing ring; X2: Axial direction of the second sealing ring. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0048] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0051] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0052] Ball valves, as a commonly used shut-off valve, are widely used in many fields such as petroleum, chemical, power, metallurgy, and construction. Their function is to conduct, cut off, or regulate the flow of fluid in the pipeline by rotating the valve core.

[0053] Existing electric two-way and three-way regulating valves have a separate valve seat and flow regulating orifice plate structure. The flow regulation is proportional or linear through the rotation of the sealing ball and the valve seat and flow regulating orifice plate. The separate structure is complex and has low assembly efficiency. The gap between the sealing ball and the flow regulating orifice plate leads to low flow regulation accuracy. At the same time, when the valve seat and the sealing ring are in contact, the sealing ring is prone to over-compression under the action of the medium, resulting in an excessive filling rate, which can easily lead to sealing ring fatigue and affect the sealing ring's life.

[0054] In other words, in related technologies, the sealing ring of ball valves is prone to fatigue failure, which reduces the reliability of ball valves. Therefore, how to improve the reliability of ball valves is a technical problem that urgently needs to be solved.

[0055] In view of this, in order to improve the reliability of the regulating ball valve, this application proposes a regulating ball valve in which a first limiting part 120 and a first inner surface 101 form a first corner space 100a. The flow regulating assembly 300 includes a first valve seat 400, a first sealing ring 500, and a flow regulating plate 600. The first sealing ring 500 is disposed in the first corner space 100a. Along the axial direction X1 of the first sealing ring 500, both ends of the first sealing ring 500 abut against the first valve seat 400 and the first limiting part 120, respectively. Along the radial direction of the first sealing ring 500, the inner end of the first sealing ring 500 abuts against the flow regulating plate 600, and the outer end of the first sealing ring 500 abuts against the first inner surface 100a. 1. Tightening: In other words, the first valve seat 400 and the flow regulating plate 600 can press the first sealing ring 500 against the first corner space 100a. Tightening the first sealing ring 500 from multiple directions allows it to fully fill the gaps in the corner space, reducing the possibility of fluid leakage from the sealing interface. If vibration or pressure fluctuations occur during equipment operation, multi-directional tightening can keep the first sealing ring 500 in a compressed state, avoiding seal failure caused by loosening due to force in one direction. At the same time, multi-directional tightening means that the force on the first sealing ring 500 is borne by multiple components, avoiding damage to a single component due to concentrated force, and extending the service life of the sealing assembly.

[0056] The regulating ball valve proposed in the embodiments of this application is described below with reference to the accompanying drawings.

[0057] Please refer to Figure 1 , Figure 2 and Figure 3 The regulating ball valve according to the first aspect of this application includes: a valve body 100, a valve core 200, and a flow regulating assembly 300.

[0058] The valve body 100 has a first flow channel 110; it can be understood that the valve body 100, as a basic frame, provides a directional flow path for the fluid through its first flow channel 110, making the fluid flow controllable and facilitating subsequent precise adjustment of the flow rate.

[0059] The valve core 200 is rotatably disposed on the valve body 100 to regulate the flow rate of the fluid flowing through the first flow channel 110; that is, the valve core 200 can change the flow rate of the first flow channel 110. The valve core 200 can change its relative position with the flow channel by rotating, thereby changing the effective flow area of ​​the flow channel.

[0060] The flow regulating component 300 is disposed in the first flow channel 110. The flow regulating component 300 includes a flow regulating plate 600, a first valve seat 400, and a first sealing ring 500. That is, both the flow regulating plate 600 and the first valve seat 400 are disposed in the first flow channel 110. It can be understood that the flow regulating plate 600 can work with the valve core 200 to regulate the flow rate of the fluid medium. At the same time, the first valve seat 400 can fix the flow regulating plate 600 and the valve core 200, and at the same time, it can enhance the sealing effect and optimize the fluid control performance, reducing the probability of fluid medium leakage between the flow regulating plate 600 and the valve core 200.

[0061] The first sealing ring 500 is disposed in the first flow channel 110. It can be understood that the first sealing ring 500, as an elastic element, fills the gap between the inner wall of the flow channel and the flow regulating plate 600 by compression deformation, thereby blocking the fluid leakage path. In other words, the first sealing ring 500 can achieve dynamic sealing through "elastic sealing". The greater the medium pressure, the greater the compression deformation of the first sealing ring 500, and the more reliable the sealing effect.

[0062] The valve body 100 has a first limiting part 120 and a first inner surface 101. The first limiting part 120 protrudes from the first inner surface 101. This configuration can form a stepped structure, which facilitates the axial X1 positioning of the first sealing ring 500 and prevents it from displacing under fluid pressure.

[0063] A first limiting part 120 is provided in the first flow channel 110. It can be understood that the first limiting part 120 in the first flow channel 110 forms an axial stop on the flow regulating plate 600, ensuring that the flow regulating plate 600 will not move along the axial direction (fluid flow direction) of the first flow channel 110 during installation, avoiding component misalignment due to assembly deviation. This setting prevents the flow regulating plate 600 from loosening due to fluid impact or vibration, ensuring the relative positional accuracy of it with the valve core 200 and the first valve seat 400, and avoiding the flow regulation effect from positional deviation.

[0064] The first limiting part 120 and the first inner surface 101 form a first corner space 100a. In other words, the first corner space 100a can provide a stable installation position for the first sealing ring 500, so that it can be constrained in multiple directions, effectively utilize space, and reduce the volume of the entire valve body 100.

[0065] The first sealing ring 500 is disposed in the first corner space 100a. This arrangement prevents the first sealing ring 500 from twisting or deforming under stress and facilitates the pre-compression of the first sealing ring 500, thereby improving the initial sealing performance.

[0066] Along the axial direction X1 of the first sealing ring 500, both ends of the first sealing ring 500 abut against the first valve seat 400 and the first limiting part 120 respectively. That is, the first valve seat 400 and the first limiting part 120 can abut the first sealing ring 500 along its axial direction, providing axial preload, which can compensate for the elastic relaxation of the sealing ring caused by temperature changes or long-term use, and maintain the stability of sealing performance.

[0067] Along the radial direction of the first sealing ring 500, the inner end of the first sealing ring 500 abuts against the flow regulating plate 600, and the outer end of the first sealing ring 500 abuts against the first inner surface 101. That is, the first inner surface 101 and the outer surface of the flow regulating plate 600 can press the first sealing ring 500 together radially to prevent fluid leakage through the gap between the flow regulating plate 600 and the first sealing ring 500, thus ensuring the accuracy of flow regulation.

[0068] Understandably, the dual constraints of axial and radial forces can form a "three-dimensional seal" structure for the first sealing ring 500, which can simultaneously resist fluid pressure from different directions, greatly improving the sealing performance. This allows for the use of a smaller preload to achieve a good sealing effect, reducing the structural strength requirements of the first valve seat 400 and the flow regulating plate 600, and lowering manufacturing costs. Furthermore, during the movement of the flow regulating plate, the first sealing ring 500 can always maintain a tight fit with each contact surface, achieving dynamic sealing and adapting to frequent adjustment conditions.

[0069] In other embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The flow regulating plate 600 has a first outer peripheral surface 311, and the first valve seat 400 is sleeved on the first outer peripheral surface 311. Please refer to... Figure 4 The first outer peripheral surface 311 is constructed as a first conical surface 311a.

[0070] Understandably, when the first valve seat 400 is subjected to medium pressure toward the first sealing ring 500, the first conical surface 311a can prevent the first valve seat 400 from moving axially, thereby preventing the first valve seat 400 from excessively compressing the first sealing ring 500. In other words, the first outer peripheral surface 311 can limit the first valve seat 400, thereby strictly controlling the compression of the first sealing ring 500 within the design range, avoiding excessive compression of the first sealing ring 500 caused by excessive medium pressure in traditional sealing structures, thus avoiding excessive filling rate, reducing the occurrence of fatigue of the first sealing ring 500, and increasing the life of the sealing ring.

[0071] In the above scheme, when the first valve seat 400 is subjected to medium pressure toward the first sealing ring 500, the first conical surface 311a abuts against the first valve seat 400, and the first valve seat 400 stops against the flow regulating plate 600, preventing the first valve seat 400 from displacing toward the first sealing ring 500. This setting can reduce the probability of the first sealing ring 500 being over-compressed, thereby avoiding excessive filling rate, reducing the occurrence of fatigue of the first sealing ring 500, and increasing the service life of the first sealing ring 500.

[0072] Understandably, due to the compression of the first conical surface 311a, the compression deformation area of ​​the first sealing ring 500 is concentrated between the first limiting part 120 and the first valve seat 400. In other words, the first conical surface 311a can increase the contact pressure between the first sealing ring 500 and the first valve seat 400 and the inner wall of the first flow channel 110, so that a reliable seal can be formed even when the medium pressure is low.

[0073] Meanwhile, since the first sealing ring 500 is restricted between the first limiting part 120 and the first valve seat 400 in the axial direction of the first flow channel 110, the first limiting part 120 and the first valve seat 400 can also fix the installation position of the first sealing ring 500, thereby improving the sealing effect.

[0074] In other embodiments, along the axial direction X1 of the first sealing ring 500, the first conical surface 311a has a first end 311b and a second end 311c, the first end 311b being closer to the valve core 200 than the second end 311c, and the outer diameter of the first conical surface 311a gradually increases from the first end 311b to the second end 311c.

[0075] In the above scheme, since the outer diameter of the first conical surface 311a gradually increases from the first end 311b to the second end 311c, that is, the first conical surface 311a gradually contracts from the second end 311c to the first end 311b, the first conical surface 311a can not only compress the first sealing ring 500, making the first conical surface 311a and the first sealing ring 500 fit tightly, so that the first sealing ring 500 is subjected to a certain pre-tightening force and the sealing effect is enhanced, but also can provide a certain support and limit for the first valve seat 400, so as to prevent the first valve seat 400 from excessively compressing the first sealing ring 500.

[0076] In the above scheme, when the first valve seat 400 is subjected to the pressure of the medium, it can also slide slightly relative to the flow regulating plate 600 until it abuts against the first conical surface 311a.

[0077] In this process, the axial end face of the first valve seat 400 first contacts and presses the first sealing ring 500, causing the first sealing ring 500 to undergo elastic deformation to fill the gap between the inner wall of the flow channel and the flow regulating plate 600, thus forming an initial seal.

[0078] When the first valve seat 400 is in contact with the first conical surface 311a, the first valve seat 400 is stopped from moving by the flow regulating plate 600, so that the compression of the first sealing ring 500 no longer increases, that is, the first sealing ring 500 is compressed to the designed compression amount, and the rigid flow regulating plate 600 bears the remaining axial force, preventing the first valve seat 400 from continuing to squeeze the first sealing ring 500.

[0079] In other words, the first conical surface 311a of the flow regulating plate 600 plays a rigid limiting role on the first valve seat 400, which can strictly control the compression of the first sealing ring 500 within the design range, avoid the excessive compression of the first sealing ring 500 caused by excessive medium pressure in the traditional sealing structure, thereby avoiding excessive filling rate, reducing the occurrence of fatigue of the first sealing ring 500, and increasing the service life of the first sealing ring 500.

[0080] Understandably, when the first valve seat 400 moves and compresses the first sealing ring 500 until the first conical surface 311a abuts against the first valve seat 400, the compression of the first sealing ring 500 no longer increases. Thus, the first conical surface 311a can block the valve seat 400 and prevent the sealing ring 500 from being over-compressed. On the other hand, the first conical surface 311a and the first sealing ring 500 are in close contact. When the first valve seat 400 abuts against the first conical surface 311a, the first conical surface 311a and the first sealing ring 500 share the fluid pressure, which can increase the contact pressure between the first sealing ring 500 and the inner wall of the first flow channel 110, so that an effective seal can be formed even under low-pressure conditions.

[0081] Furthermore, when fluid pressure fluctuates or components are slightly displaced, the first sealing ring 500 can adaptively fill the gap using elastic deformation, while the first conical surface 311a provides stable support, preventing the first sealing ring 500 from being squeezed out or displaced, thus achieving a dynamic sealing effect and improving the reliability of the regulating ball valve.

[0082] This design, by limiting the amount of compression and ensuring uniform pressure distribution, reduces the aging and damage of the first sealing ring 500 caused by excessive compression and localized wear, extends its replacement cycle, and lowers maintenance costs.

[0083] As an example, when the first conical surface 311a contacts the first sealing ring 500, it can exert a component force on the first sealing ring 500 in the axial direction of the first flow channel 110, thereby squeezing the first sealing ring 500. This arrangement ensures that the first conical surface 311a and the first sealing ring 500 fit tightly together, while the first sealing ring 500 is subjected to a certain pre-tightening force, thus enhancing the sealing effect.

[0084] Furthermore, when the first valve seat 400 shifts axially due to assembly errors or medium pressure, the compressive force between the first conical surface 311a and the first sealing ring 500 can force the first sealing ring 500 to move closer to the first valve seat 400, thereby improving the sealing effect and ensuring sealing performance.

[0085] Meanwhile, the first conical surface 311a can provide a component force parallel to the radial direction of the flow regulating plate 600 to the first sealing ring 500, thereby squeezing the first sealing ring 500 toward the inner wall of the first flow channel 110, ensuring that the first sealing ring 500 is tightly fitted to the end face of the first valve seat 400. This configuration can resist bidirectional leakage paths (such as fluid axial penetration along the first valve seat 400 or radial leakage along the first flow channel 110), improving the sealing effect of the first sealing ring 500 from multiple directions.

[0086] In other embodiments, the cone angle of the first conical surface 311a is 20°-30°.

[0087] In the above scheme, since the cone angle of the first conical surface 311a meets the above range, on the one hand, it can fit tightly with the first sealing ring 500, providing sufficient pre-tightening force for the first sealing ring 500, improving the sealing effect, and reducing the probability of leakage caused by poor sealing surface fit. At the same time, when the first valve seat 400 squeezes the first sealing ring 500, it can provide sufficient extrusion force for the first sealing ring 500, improving the dynamic sealing effect.

[0088] On the other hand, it can provide sufficient installation space for the first sealing ring 500, reduce the probability of rapid fatigue failure caused by excessive compression of the first sealing ring 500, reduce the fatigue wear rate of the first sealing ring 500, and improve the service life of the first sealing ring 500.

[0089] At the same time, to avoid the first sealing ring 500 being forced to squeeze against the inner wall of the first flow channel 110 due to an excessively large cone angle, the deformation direction of the first sealing ring 500 is more biased towards the gap area (rather than being tightly attached to the wall surface), reducing the risk of high-pressure medium squeezing into the gap and ensuring the sealing effect.

[0090] Optionally, the cone angle of the first conical surface 311a can be 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, or 30°.

[0091] In other embodiments, the first valve seat 400 has a first inner peripheral surface 410 that fits against the first outer peripheral surface 311, the first inner peripheral surface 410 being configured as a second conical surface 411.

[0092] In the above scheme, since the first inner circumferential surface 410 is constructed as the second conical surface 411, on the one hand, it can provide sufficient installation space for the flow regulating plate 600, increase the contact area between the first valve seat 400 and the flow regulating plate 600, thereby improving the sealing effect and reducing the probability of fluid medium leakage. At the same time, it can improve the uniformity of contact stress between the first valve seat 400 and the flow regulating plate 600, and reduce the probability of local excessive wear.

[0093] On the other hand, it can provide sufficient installation space for the first sealing ring 500, reduce the probability of rapid fatigue failure caused by excessive compression of the first sealing ring 500, reduce the fatigue wear rate of the first sealing ring 500, and improve the service life of the first sealing ring 500.

[0094] In other embodiments, the first valve seat 400 has a first outer surface 401 that abuts against the first sealing ring 500 along the axial direction X1 of the first sealing ring 500. The first outer surface 401 is configured as a plane. It is understood that the planar structure allows the first valve seat 400 and the first sealing ring 500 to form a large-area uniform contact in the axial direction, avoiding stress concentration caused by point / line contact. When an axial preload is applied to the first valve seat 400, the planar design can uniformly transfer the load to the first sealing ring 500, ensuring consistent compression at all points along the axial direction, thereby forming a continuous and reliable sealing line.

[0095] In other embodiments, please refer to Figure 5 , Figure 6 and Figure 7 The end of the flow regulating plate 600 facing the valve core 200 is constructed as an arc-shaped surface 314, which is suitable for cooperating with the valve core 200.

[0096] Understandably, the arc-shaped surface 314 creates a regular inlet cross-section for the fluid when it enters the through hole, avoiding turbulent flow velocity distribution caused by irregular contact surfaces. In other words, the arc-shaped surface 314 can provide a regular fluid inlet, improving the uniformity of flow velocity distribution when the fluid flow regulating plate 600 is in operation, thereby improving the stability of the regulating ball valve.

[0097] The arc-shaped surface 314 is suitable for mating with the valve core 200. It can be understood that the arc-shaped surface 314 is concave towards the valve core 200, so that the valve core 200 and the flow regulating plate 600 can make contact through the curved surface. On the one hand, it can reduce the gap between the valve core 200 and the flow regulating plate 600, and reduce the probability of fluid medium leakage from the valve core 200 and the flow regulating plate 600. On the other hand, it can allow the fluid medium to flow directly from the valve core 200 to the flow regulating plate 600, reducing the pressure loss and the probability of eddy current generation caused by abrupt changes in the flow path.

[0098] Meanwhile, the arc-shaped surface 314 can make the fluid form a radially converging flow before entering the through hole, making the fluid flow more smoothly when passing through the flow regulating plate 600, reducing the probability of turbulence, avoiding flow fluctuations caused by turbulence, thereby reducing medium pressure fluctuations and reducing the pressure of the valve seat 400 excessively squeezing the sealing ring 500.

[0099] In other embodiments, please refer to Figure 3 and Figure 4 The flow regulating plate 600 also includes a first protrusion 330 along the axial direction X1 of the first sealing ring 500. The first protrusion 330 is located at the end of the flow regulating plate 600 away from the valve core 200. It can be understood that the first protrusion 330 extends along the axial direction of the first flow channel 110 and forms an annular structure, providing more installation positions for the flow regulating plate 600 and facilitating the installation and fixing of the flow regulating plate 600.

[0100] The first protrusion 330 is engaged with the inner side of the first limiting part 120, which can realize the installation and fixation of the flow regulating plate 600. With this configuration, the first protrusion 330 and the flow regulating plate 600 can cooperate with the first limiting part 120 to realize the installation and fixation of the flow regulating plate 600, while reducing the axial and radial movement of the flow regulating plate 600.

[0101] Furthermore, the annular surface of the first protrusion 330 makes full circumferential contact with the inner surface of the first limiting part 120, upgrading the traditional point contact or line contact installation method to surface contact positioning, so that the axial positioning force is evenly distributed in the entire annular area, reducing the occurrence of local stress concentration, and ensuring that the flow regulating plate 600 does not move radially under fluid impact.

[0102] Meanwhile, the annular snap-fit ​​structure forms a rigid connection similar to a "flange". When the medium pressure acts on the flow regulating plate 600, the load is evenly transmitted to the first limiting part 120 through the annular surface, reducing the probability of the flow regulating plate 600 bending and deforming.

[0103] In other embodiments, please refer to Figure 3The regulating ball valve also includes a second valve seat 700 and a second sealing ring 800. The valve body 100 also has a second limiting part 130 and a second inner surface 102. The second limiting part 130 protrudes from the second inner surface 101 and is sandwiched between the second valve seat 700 and the second limiting part 130 along the axial direction X2 of the second sealing ring 800.

[0104] In the above scheme, the second sealing ring 800 is sandwiched between the second valve seat 700 and the second limiting part 130, forming a bidirectional abutment along the axial direction so that the second sealing ring 800 is uniformly compressed in the axial direction, forming a stable sealing surface, preventing fluid from leaking from the axial gap. At the same time, if the first sealing ring 500 leaks due to aging or wear, the second sealing ring 800 can act as a sealing barrier to prevent media leakage.

[0105] In some specific embodiments, the valve body 100 includes a connected valve body and a valve cover. The connection method can be threaded or snap-fit, and this application does not limit this. The valve body has a first inner surface 101 and a first limiting part 120, and the valve cover has a second inner surface 102 and a second limiting part 130.

[0106] In other embodiments, please refer to Figure 3 The second valve seat 700 includes a first segment 701 and a second segment 702 connected together. Along the axial direction X2 of the second sealing ring 800, the second sealing ring 800 is sandwiched between the first segment 701 and the second limiting part 130. Along the radial direction of the second sealing ring 800, the second sealing ring 800 is located between the second segment 702 and the second inner surface 102.

[0107] In the above scheme, the axial force is directly transmitted to the end face of the second sealing ring 800 by the first section 701, and the radial force is squeezed to the outside of the second sealing ring 800 by the second section 702. This avoids excessive force in one direction, thereby limiting the deformation range of the second sealing ring 800. At the same time, it also helps to ensure that the axial compression of the second sealing ring 800 is uniform, thereby helping to improve the service life of the second sealing ring 800.

[0108] In other embodiments, please refer to Figure 3 , Figure 5 , Figure 6 and Figure 7 The regulating ball valve also includes a first positioning part 340, which is disposed on the outer peripheral surface of the first protrusion 330. It can be understood that the first positioning part 340 can play a positioning role, which facilitates the installation and positioning of the flow regulating plate 600.

[0109] The inner circumferential surface of the first limiting part 120 is provided with a second positioning part 121 that cooperates with the first positioning part 340.

[0110] In the above scheme, the cooperation between the first positioning part 340 (such as keyway, pin hole, etc.) and the second positioning part 121 (such as key, positioning pin, etc.) can force the flow regulating plate 600 and the first limiting part 120 to form a unique circumferential positioning relationship, thereby eliminating the angular deviation in the traditional installation method and improving the installation and fixing efficiency.

[0111] The impact of the fluid medium may cause the flow regulating plate 600 to rotate axially. The cooperation between the first positioning part 340 and the second positioning part 121 can prevent the flow regulating plate 600 from generating circumferential displacement, thus ensuring the relative position accuracy between the valve core 200 and the flow regulating plate 600.

[0112] Meanwhile, the geometry of the positioning part can be designed as "axial limit". When the flow regulating plate 600 is inserted into the first limit part 120, the axial depth is automatically controlled through the contact of the positioning part, so as to avoid sealing failure caused by excessive or shallow assembly.

[0113] In other embodiments, please refer to Figure 3 , Figure 5 , Figure 6 and Figure 7 The first positioning part 340 is constructed as a semi-cylindrical structure and protrudes from the outer peripheral surface of the first protrusion 330. It can be understood that the semi-cylindrical structure can extend along the axial direction of the first flow channel 110, and the axis of the semi-cylindrical structure is parallel to the axial direction of the first flow channel 110. Thus, the first positioning part 340 can not only play a positioning role, but also play a guiding role during the installation process, improving the ease of use.

[0114] The second positioning part 121 is constructed as a semi-cylindrical groove.

[0115] In the above scheme, the first positioning part 340 of the semi-cylindrical structure can enter the semi-cylindrical groove to achieve the positioning of the flow regulating plate 600. The curved surface characteristics of the semi-cylindrical structure make it form a surface contact positioning with the groove. Compared with the traditional point and line contact method, it can disperse the local stress during installation to the entire contact surface and avoid component deformation or wear caused by stress concentration. At the same time, the axial extension characteristics of the semi-cylindrical structure form an axial limiting aid, which works in conjunction with the first protrusion 330 to not only restrict the circumferential rotation of the flow regulating plate 600, but also provide secondary radial limiting, reducing the probability of radial movement of the flow regulating plate 600 caused by fluid impact.

[0116] In other embodiments, there are multiple first positioning parts 340 and multiple second positioning parts 121. Along the circumference of the flow regulating plate 600, multiple first positioning parts 340 are spaced apart, and multiple second positioning parts 121 are spaced apart. Each first positioning part 340 cooperates with a corresponding second positioning part 121.

[0117] In the above scheme, multiple first positioning parts 340 and second positioning parts 121 are respectively arranged along the circumference of the flow regulating plate 600. They can be distributed in a circumferential manner to evenly distribute external forces such as fluid pressure and mechanical vibration to various parts of the flow regulating plate 600, avoid excessive stress at a single point causing fatigue damage, and effectively extend the service life of the components.

[0118] Furthermore, multiple positioning units provide redundant guidance, ensuring overall assembly accuracy even if individual components have minor machining errors. During installation, each positioning unit can guide the adjustment plate into position step by step, reducing the precision requirements for worker operation and improving ease of use.

[0119] Secondly, embodiments of this application provide a piping system including a regulating ball valve as described in any of the above embodiments.

[0120] The pipeline system proposed in this application has improved reliability and reduced the frequency of maintenance and repair due to the presence of the regulating ball valve described in any of the above embodiments.

[0121] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0122] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0123] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0124] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A regulating ball valve, characterized in that include: The valve body (100) has a first flow channel (110); A valve core (200) is rotatably disposed on the valve body (100) to regulate the flow rate of fluid flowing through the first flow channel (110); A flow regulation component (300) is disposed in the first flow channel (110); The valve body (100) has a first limiting part (120) and a first inner surface (101). The first limiting part (120) protrudes from the first inner surface (101). The first limiting part (120) and the first inner surface (101) form a first corner space (100a). The flow regulating assembly (300) includes a first valve seat (400), a first sealing ring (500), and a flow regulating plate (600). The first sealing ring (500) is disposed in the first corner space (100a). Along the axial direction (X1) of the first sealing ring (500), both ends of the first sealing ring (500) abut against the first valve seat (400) and the first limiting part (120) respectively. Along the radial direction of the first sealing ring (500), the inner end of the first sealing ring (500) abuts against the flow regulating plate (600), and the outer end of the first sealing ring (500) abuts against the first inner surface (101).

2. Regulating ball valve according to claim 1, characterized in that The flow regulating plate (600) has a first outer peripheral surface (311), and the first valve seat (400) is sleeved on the first outer peripheral surface (311). The first outer peripheral surface (311) is constructed as a first conical surface (311a).

3. Regulating ball valve according to claim 2, characterized in that Along the axial direction (X1) of the first sealing ring (500), the first conical surface (311a) has a first end (311b) and a second end (311c). The first end (311b) is closer to the valve core (200) than the second end (311c). From the first end (311b) to the second end (311c), the outer diameter of the first conical surface (311a) gradually increases.

4. The regulating ball valve according to claim 2, characterized in that The cone angle of the first conical surface (311a) is 20°-30°.

5. The regulating ball valve according to claim 2, characterized in that The first valve seat (400) has a first inner circumferential surface (410) that fits against the first outer circumferential surface (311), and the first inner circumferential surface (410) is constructed as a second conical surface (411).

6. The regulating ball valve according to claim 1, characterized in that The first valve seat (400) has a first outer surface (401) along the axial direction (X1) of the first sealing ring (500), the first outer surface (401) abutting against the first sealing ring (500), and the first outer surface (401) is configured as a plane.

7. The regulating ball valve according to claim 1, characterized in that, The end of the flow regulating plate (600) facing the valve core (200) is constructed as an arc-shaped surface (314), which is adapted to cooperate with the valve core (200).

8. The regulating ball valve according to claim 7, characterized in that, The flow regulating plate (600) includes a first protrusion (330) along the axial direction (X1) of the first sealing ring (500). The first protrusion (330) is disposed at one end of the flow regulating plate (600) away from the valve core (200). The first protrusion (330) is engaged with the inner side of the first limiting part (120).

9. The regulating ball valve according to claim 1, characterized in that, The regulating ball valve further includes a second valve seat (700) and a second sealing ring (800). The valve body (100) also has a second limiting part (130) and a second inner surface (102). The second limiting part (130) protrudes from the second inner surface (102) and is sandwiched between the second valve seat (700) and the second limiting part (130) along the axial direction (X2) of the second sealing ring (800).

10. The regulating ball valve according to claim 9, characterized in that, The second valve seat (700) includes a first segment (701) and a second segment (702) connected along the axial direction (X2) of the second sealing ring (800). The second sealing ring (800) is sandwiched between the first segment (701) and the second limiting portion (130). Along the radial direction of the second sealing ring (800), the second sealing ring (800) is located between the second segment (702) and the second inner surface (102).

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