Flow regulating plate and regulating ball valve

Abstract

The application relates to the technical field of ball valves, and discloses a flow regulating plate and a regulating ball valve. The flow regulating plate comprises a plate body, the plate body is provided with a first through hole, the first through hole penetrates through the plate body along the thickness direction of the plate body, the projection of the first through hole along the thickness direction of the plate body comprises two arc curves, the first through hole has a first center line, the first center line is perpendicular to the axial direction of the first through hole, the two arc curves are located on the two sides of the first center line and protrude towards each other, and the two arc curves each have a first end close to the first center line and a second end away from the first center line; a first arc line connects the first ends of the two arc curves; a second arc line has an opening opposite to that of the first arc line, and the second arc line connects the second ends of the two arc curves; and the center of the first arc line and the center of the second arc line coincide. The regulating ball valve improves the regulating accuracy.

Description

Technical Field

[0001] This application relates to the field of ball valve technology, and in particular to a flow regulating plate and 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 equal percentage flow regulation characteristics of ball valves are inaccurate. Therefore, how to improve the accuracy of flow regulation is a technical problem that urgently needs to be solved. Utility Model Content

[0004] This application provides a flow regulating plate and a regulating ball valve, which improves the accuracy of flow regulation.

[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 flow regulating plate, including a plate body, the plate body having a first through hole, the first through hole penetrating the plate body along the thickness direction of the plate body, the projection of the first through hole along the thickness direction of the plate body including: two arc curves, the first through hole having a first center line, the first center line being perpendicular to the axial direction of the first through hole, the two arc curves being located on both sides of the first center line and convex toward each other, each of the two arc curves having a first end close to the first center line and a second end away from the first center line; a first arc line connecting the first ends of the two arc curves; a second arc line, the opening of the second arc line being opposite to the opening of the first arc line, the second arc line connecting the second ends of the two arc curves; wherein, the center of the first arc line coincides with the center of the second arc line.

[0007] The flow regulating plate proposed in this application embodiment can not only change the fluid flow area, but also optimize the fluid dynamic performance with its arc-shaped profile. The smooth connection between the arc curve and the arc line can reduce the separation phenomenon when the fluid passes through, reduce the probability of eddy current generation, thereby reducing friction loss. It can maintain a relatively constant regulating sensitivity across the entire flow range, avoiding the problems of over-sensitivity at low flow rates and lag at high flow rates. This significantly improves the accuracy and stability of flow regulation, making the regulation characteristics closer to equal percentage regulation, which helps to improve regulation accuracy.

[0008] Optionally, the ratio of the arc length of the first arc line to the arc length of the second arc line is 0.18 to 0.19.

[0009] In the above scheme, since the ratio of the arc length of the first arc line and the arc length of the second arc line meets the above range, on the one hand, the arc length ratio within this range can make the fluid flow rate through the first through hole smaller when the fluid flow rate through the first through hole is small, and on the other hand, the arc length ratio within this range can make the fluid flow rate through the first through hole larger when the fluid flow rate through the first through hole is large, which helps to improve the flow rate regulation accuracy and thus meet the requirements of equal percentage regulation.

[0010] Optionally, the two arc curves are set symmetrically about the first center line.

[0011] In the above scheme, since the two arc curves are symmetrically set about the first center line, it helps to maintain a stable nonlinear relationship of the flow-opening curve throughout the entire range. When the fluid passes from the left or right, the rate of change of the flow area of ​​the symmetrical structure is exactly the same, avoiding the deviation of the regulation characteristics caused by the difference in flow direction. The symmetrical arc profile makes the streamline distribution of the fluid more uniform when passing through the first through hole, reducing the probability of eddies and turbulence caused by structural asymmetry.

[0012] Optionally, the ratio of the radius of the arc curve to the radius of the first arc line is 1.3 to 1.4.

[0013] In the above scheme, since the ratio of the radius of the arc curve to the radius of the first arc line meets the above range, on the one hand, the arc curve and the first arc line can form a moderately expanded cross-sectional profile. When the flow rate of the fluid flowing through the first through hole changes, the rate of change of the flow rate of the fluid through the first through hole can change accordingly. On the other hand, the obstruction of the arc curve to the fluid can be reduced, ensuring the flow efficiency of the fluid flowing through the first through hole.

[0014] Optionally, the ratio of the arc length of the arc curve to the arc length of the first arc line is in the range of 2.4 to 2.5.

[0015] In the above scheme, since the ratio of the arc length of the arc curve to the arc length of the first arc line meets the above range, on the one hand, the arc curve and the first arc line can form a moderately expanded cross-sectional profile. When the flow rate of the fluid flowing through the first through hole changes, the rate of change of the flow rate of the fluid through the first through hole can change accordingly. On the other hand, the blocking effect of the edge of the first through hole corresponding to the arc curve on fluids with different flow rates can be changed, ensuring the flow efficiency of the fluid flowing through the first through hole.

[0016] Optionally, the line connecting the center of the arc curve and the center of the first arc line is constructed as a first connecting line, and the angle between the first connecting line and the first center line is 40° to 45°.

[0017] In the above scheme, since the angle between the first connecting line and the first center line meets the above range, on the one hand, the cross-section of the first through hole can significantly enhance the throttling effect under low flow conditions. At this time, the transition between the arc curve and the first arc line is more gradual, the flow velocity increase in the narrow cross-section area is slowed down when the fluid passes through, the pressure gradient distribution is more uniform, and the accuracy of low flow regulation is further improved. On the other hand, it can make the arc curve and the first arc line form a large curvature difference, and the rate of change of cross-sectional area is significantly improved when a large flow passes through, the fluid can diffuse rapidly, reduce the turbulence intensity when the high-speed fluid passes through, and at the same time accelerate the response speed under high flow conditions.

[0018] Optionally, along the thickness direction of the plate body, the plate body has a first end face and a second end face that are disposed opposite to each other, a first through hole penetrates the first end face and the second end face, the first end face is constructed as a plane, and the second end face is constructed as an arc-shaped surface that protrudes toward the first end face.

[0019] In the above scheme, the arc-shaped second end face protrudes towards the valve core opening, causing the fluid to form a radially converging flow before entering the through hole. This makes the fluid flow into the first through hole smoother, reduces the probability of turbulence, avoids flow fluctuations caused by turbulence, and improves control accuracy. In addition, the arc-shaped surface can provide a regular fluid inlet, improve the uniformity of flow velocity distribution when the fluid enters the first through hole, and make the correspondence between flow rate and opening degree more accurate.

[0020] Secondly, embodiments of this application provide a regulating ball valve, comprising:

[0021] The valve body has a first flow channel;

[0022] The valve core is rotatably mounted on the valve body to regulate the flow rate of fluid flowing through the first flow channel;

[0023] The flow regulating plate in any of the above embodiments is disposed in the first flow channel.

[0024] The regulating ball valve proposed in this application embodiment, having the flow regulating plate described in any of the above embodiments, can maintain a relatively constant regulating sensitivity across the entire flow range, avoiding the problems of over-sensitivity at low flow rates and lag at high flow rates, thereby significantly improving the accuracy and stability of flow regulation, making the regulating characteristics closer to equal percentage regulation, and improving the regulation precision.

[0025] Optionally, the valve body has a protrusion located in the first flow channel, and the regulating ball valve also includes a valve seat with a second through hole. Along the axial direction of the first flow channel, the second through hole is disposed opposite to the first through hole, and the outer periphery of the flow regulating plate is sandwiched between the valve seat and the protrusion.

[0026] In the above scheme, the end faces of the protrusion and the valve seat respectively form axial compression on the first end face and the second end face of the flow regulating plate, forming axial positioning, reducing the probability of flow surging caused by fluid pulsation, and reducing the probability of flow control failure caused by the relative offset between the first through hole and the valve core opening. The inner hole of the protrusion and the outer circle of the valve seat form a radial fit, forming a radial constraint. The outer periphery of the flow regulating plate is embedded in the annular gap, which can reduce the additional pressure loss caused by the flow channel deviation, thereby helping to improve control accuracy.

[0027] Optionally, the valve body has a first mounting protrusion and a second mounting protrusion. Along the extension direction of the first flow channel, the first mounting protrusion is disposed on the outer surface of one end of the valve body, and the second mounting protrusion is disposed on the outer surface of the other end of the valve body.

[0028] In the above scheme, the first and second mounting protrusions provide clear physical reference points for the installation of the valve body. During the installation process, the installation position of the valve body can be quickly and accurately determined based on the relative positional relationship between these two protrusions and other equipment or pipelines. On the one hand, this can improve operating efficiency, save installation time, reduce maintenance costs, and improve user experience. On the other hand, it can reduce the occurrence of problems such as misalignment of flow channels and misalignment of connections caused by installation position deviations. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the flow regulating plate in some embodiments of this application;

[0031] Figure 2 This is a front view schematic diagram of the flow regulating plate in some embodiments of this application;

[0032] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0033] Figure 4 This is a schematic diagram of the structure of the regulating ball valve in some embodiments of this application;

[0034] Figure 5 This is a top view of the regulating ball valve in some embodiments of this application;

[0035] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at point BB;

[0036] Figure 7 This is a schematic diagram of the flow regulation characteristic curves in some embodiments of this application.

[0037] [Explanation of Labels in the Attached Image]

[0038] 1000: Flow regulating plate;

[0039] 100: Board body;

[0040] 110: First through hole; P: First centerline;

[0041] 111: First arc; L: First connecting line;

[0042] 112: Arc-shaped curve; 112a: First end; 112b: Second end;

[0043] 113: The second arc line;

[0044] 114: First end face; 115: Second end face;

[0045] 2000: Control ball valve;

[0046] 200: Valve body; 210: First flow channel; 220: Protrusion; 230: First mounting protrusion; 240: Second mounting protrusion;

[0047] 300: Valve core;

[0048] 400: Valve seat; 410: Second through hole. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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).

[0055] 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.

[0056] However, in related technologies, the equal percentage flow regulation characteristics of ball valves are inaccurate. Therefore, how to improve the accuracy of flow regulation is a technical problem that urgently needs to be solved.

[0057] In view of this, this application proposes a flow regulating plate 1000. The flow regulating plate 1000 includes a plate body 100, and the plate body 100 has a first through hole 110. Along the thickness direction of the plate body 100, the projection of the first through hole 110 includes two arc curves 112, a first arc line 111, and a second arc line 113. The two arc curves 112 are respectively located at the two ends of the first arc line 111, and the centers of the first arc line 111 and the second arc line 113 coincide. This configuration improves the flow regulation accuracy of the flow regulating plate 1000, making the flow regulation characteristics closer to equal percentage regulation.

[0058] The flow regulating plate 1000 proposed in this application is described below with reference to the accompanying drawings.

[0059] like Figures 1-3 As shown, the flow regulating plate 1000 provided according to the first aspect embodiment of this application includes a plate body 100. It is understood that the plate body 100 can be assembled into various regulating ball valves 2000 to realize the assembly of the flow regulating plate 1000. The plate body 100 can be installed in a specific position in the valve body 200 as needed, or multiple flow regulating plates 1000 can be combined and installed in the valve body 200 as needed. This configuration improves the ease of use.

[0060] The plate body 100 has a first through hole 110. The first through hole 110 penetrates the plate body 100 along the thickness direction of the plate body 100. The projection of the first through hole 110 along the thickness direction of the plate body 100 includes two arc curves 112, a first arc line 111, and a second arc line 113.

[0061] It is understandable that when fluid flows through the first through-hole 110, the flow rate is limited by the size of the cross-section of the first through-hole 110. Since the projection of the first through-hole 110 includes two arc curves 112, a first arc line 111, and a second arc line 113, that is, the cross-section of the first through-hole 110 has an arc profile, it can further change the flow rate of the fluid flowing through the first through-hole 110. It can not only change the fluid flow area, but the arc profile can also optimize the fluid dynamics performance. The smooth connection between the arc curve 112 and the first arc line 111 and the second arc line 113 can reduce the separation phenomenon when the fluid passes through, reduce the probability of eddy current generation, thereby reducing friction loss and helping to improve the accuracy of flow regulation.

[0062] The first through hole 110 has a first center line P, which is perpendicular to the axis of the first through hole 110. Two arc-shaped curves 112 are located on both sides of the first center line P and convex towards each other. Each of the two arc-shaped curves 112 has a first end 112a close to the first center line P and a second end 112b away from the first center line P. The first arc-shaped line 111 connects the first ends 112a of the two arc-shaped curves 112. The opening of the second arc-shaped line 113 is opposite to the opening of the first arc-shaped line 111, and the second arc-shaped line 113 connects the second ends 112b of the two arc-shaped curves 112.

[0063] In the above scheme, the two arc curves 112 convex towards each other, that is, the two arc curves 112 can be minor arc segments. The first arc line 111, one arc curve 112, the second arc line 113 and another arc curve 112 are connected in sequence, which can not only change the fluid flow area, but also reduce the impact on the fluid velocity, thereby helping to improve the accuracy of flow regulation.

[0064] The center of the first arc line 111 coincides with the center of the second arc line 113. In other words, the first arc line 111 and the second arc line 113 can be different arc segments of the same circle, making the cross-section of the first through hole 110 more symmetrical. When high-speed fluid passes through, the symmetrical arc profile can reduce the possibility of turbulence and make the fluid flow more stable, thereby helping to improve the accuracy of flow regulation.

[0065] In addition, the first arc line 111 and the second arc line 113 can also be arc segments of circles with different diameters under the same center. With this configuration, when high-speed fluid passes through, it can produce a differentiated constraint effect on the fluid, so that the fluid can achieve a velocity gradient change in different regions of the first through hole 110, which promotes the fluid to produce controllable laminar separation and reattachment. This not only avoids the energy loss caused by excessive turbulence, but also uses the pressure gradient generated by the velocity difference to achieve nonlinear fine adjustment of the flow rate.

[0066] The flow regulating plate 1000 proposed in this application embodiment has a cross-section of the first through hole 110 including a first arc line 111, an arc curve 112, a second arc line 113, and another arc curve 112 connected in sequence. This not only changes the fluid flow area, but the arc profile can also optimize the fluid dynamics performance. The smooth connection between the arc curve 112 and the arc line can reduce the separation phenomenon when the fluid passes through, reduce the probability of eddy current generation, thereby reducing friction loss and helping to improve the accuracy of flow regulation.

[0067] It is understandable that when fluid passes through the first through hole 110, the narrow cross-sectional area near the first center line P has a significant throttling effect on the small flow rate of the fluid, so that a small change in flow rate can cause a large change in velocity and pressure.

[0068] As the flow rate increases, the wide cross-sectional area far from the first centerline P gradually takes effect, reducing the rate of flow velocity increase. This allows for a relatively constant adjustment sensitivity across the entire flow range, avoiding over-sensitivity at low flow rates and lag at high flow rates. Consequently, the accuracy and stability of flow rate regulation are significantly improved, making the regulation characteristics closer to equal percentage regulation, which helps to improve regulation precision.

[0069] In other embodiments, the ratio of the arc length of the first arc line 111 to the arc length of the second arc line 113 is 0.18 to 0.19.

[0070] In the above scheme, since the ratio of the arc length of the first arc line 111 to the arc length of the second arc line 113 satisfies the above range, on the one hand, the arc length ratio within this range can make the fluid flow rate through the first through hole 110 smaller when the fluid flow rate through the first through hole 110 is small, and on the other hand, the arc length ratio within this range can make the fluid flow rate through the first through hole 110 larger when the fluid flow rate through the first through hole 110 is large, which helps to improve the flow rate regulation accuracy and thus meet the requirements of equal percentage regulation.

[0071] For example, when the fluid flow rate is below 20% of the range, the narrow cross-sectional area dominated by the first arc line 111 (with a shorter arc length) has a strong throttling effect on the fluid, and the slope of the flow area changing with the opening is small, avoiding drastic fluctuations when adjusting the flow rate.

[0072] When the flow rate exceeds 60% of the range, the proportion of the wide cross-section area corresponding to the second arc line 113 increases, and the slope of the flow area change increases, ensuring the adjustment sensitivity at high flow rates. This change pattern is highly consistent with the "logarithmic relationship between flow rate and opening" required by equal percentage adjustment, thereby significantly improving the adjustment accuracy.

[0073] Optionally, the ratio of the arc length of the first arc line 111 to the arc length of the second arc line 113 can be 0.18, 0.181, 0.183, 0.185, 0.186, 0.187, 0.189, or 0.19.

[0074] Furthermore, since the ratio of the arc length of the first arc line 111 to the arc length of the second arc line 113 satisfies the above-mentioned range, the curvature change gradient of the two arc lines can be made smoother, and the transition of the streamline from the narrow section to the wide section when the fluid passes through is smoother, reducing the probability of eddy current generation.

[0075] In other embodiments, please refer to Figure 3 The two arc curves 112 are symmetrically set about the first center line P.

[0076] In the above scheme, since the two arc curves 112 are symmetrically set about the first center line P, it helps to maintain a stable nonlinear relationship of the flow-opening curve throughout the entire range. When the fluid passes through from the left or right, the rate of change of the flow area of ​​the symmetrical structure is exactly the same, avoiding the deviation of the regulation characteristics caused by the difference in flow direction. The symmetrical arc profile makes the streamline distribution of the fluid more uniform when passing through the through hole, reducing the probability of eddies and turbulence caused by structural asymmetry, thereby helping to improve the accuracy of flow regulation.

[0077] This design not only helps improve the accuracy of flow regulation of the flow regulating plate 1000, but also improves the ease of installation of the flow regulating plate 1000 and increases installation efficiency.

[0078] In other embodiments, the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 is 1.3 to 1.4.

[0079] In the above scheme, since the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 satisfies the above range, on the one hand, the arc curve 112 and the first arc line 111 can form a moderately expanded cross-sectional profile. When the flow rate of the fluid flowing through the first through hole 110 changes, the rate of change of the flow rate of the fluid through the first through hole 110 can change accordingly. On the other hand, it can reduce the obstruction of the fluid and ensure the flow efficiency of the fluid flowing through the first through hole 110.

[0080] Understandably, when the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 decreases, the area in the arc profile of the first through hole 110 that can block the fluid becomes larger, making the flow rate of the fluid flowing through the first through hole 110 change smaller, thereby helping to improve the accuracy of flow regulation.

[0081] When the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 increases, the area in the arc profile of the first through hole 110 that can block the fluid becomes smaller, which can increase the flow rate change rate of the first through hole 110 at high flow rates, thereby improving the flow regulation accuracy.

[0082] Optionally, the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 can be 1.3, 1.31, 1.32, 1.34, 1.37, 1.39, or 1.4.

[0083] In other embodiments, the ratio of the arc length of the arc curve 112 to the arc length of the first arc line 111 ranges from 2.4 to 2.5.

[0084] In the above scheme, since the ratio of the arc length of the arc curve 112 to the arc length of the first arc line 111 satisfies the above range, on the one hand, the arc curve 112 and the first arc line 111 can form a moderately expanded cross-sectional profile. When the flow rate of the fluid flowing through the first through hole 110 changes, the rate of change of the flow rate of the fluid through the first through hole 110 can change accordingly. On the other hand, it can reduce the obstruction of the fluid and ensure the flow efficiency of the fluid flowing through the first through hole 110.

[0085] Optionally, the ratio of the arc length of the arc curve 112 to the arc length of the first arc line 111 can be 2.4, 2.41, 2.42, 2.44, 2.45, 2.47, 2.49, or 2.5.

[0086] In other embodiments, please refer to Figure 3 The line connecting the center of the arc curve 112 and the center of the first arc line 111 is constructed as the first connecting line L. The angle between the first connecting line L and the first center line P is R, and the range of R is 40° to 45°.

[0087] In the above scheme, since the angle between the first connecting line L and the first center line P satisfies the above range, on the one hand, the cross-section of the first through hole 110 can significantly enhance the throttling effect under low flow conditions. At this time, the transition between the arc curve 112 and the first arc line 111 is smoother, the flow velocity increase in the narrow cross-section area is slowed down when the fluid passes through, the pressure gradient distribution is more uniform, and the accuracy of low flow regulation is further improved.

[0088] On the other hand, it can make the arc curve 112 and the first arc line 111 form a large curvature difference, which significantly increases the rate of change of cross-sectional area when a large flow rate passes through, allowing the fluid to spread rapidly, reducing the turbulence intensity when the high-speed fluid passes through, and accelerating the response speed under high flow conditions.

[0089] Optionally, the angle between the first connecting line L and the first center line P can be 40°, 41°, 42°, 43°, 44°, or 45°.

[0090] In other embodiments, please refer to Figure 3 Along the thickness direction of the plate body 100, the plate body 100 has a first end face 114 and a second end face 115 that are disposed opposite to each other. A first through hole 110 penetrates the first end face 114 and the second end face 115. The first end face 114 is constructed as a plane, and the second end face 115 is constructed as an arc-shaped surface that protrudes toward the first end face 114.

[0091] In the above scheme, the arc-shaped surface makes the fluid form a regular inlet cross section when entering the through hole, avoiding the disorder of flow velocity distribution caused by the irregular end face. In other words, the arc-shaped surface can provide a regular fluid inlet, improve the uniformity of flow velocity distribution when the fluid enters the first through hole 110, and make the correspondence between flow rate and opening degree more accurate.

[0092] Understandably, the arc-shaped second end face 115 protrudes towards the valve core 300, causing the fluid to form a radially converging flow before entering the through hole. This makes the fluid flow into the first through hole 110 more smoothly, reduces the probability of turbulence, avoids flow fluctuations caused by turbulence, and improves control accuracy.

[0093] Secondly, please refer to Figure 4 , Figure 5 and Figure 6 This application provides a regulating ball valve 2000, comprising:

[0094] Valve body 200 has a first flow channel 210;

[0095] The valve core 300 is rotatably disposed on the valve body 200 to regulate the flow rate of fluid flowing through the first flow channel 210;

[0096] The flow regulating plate 1000 of any of the above embodiments is disposed in the first flow channel 210.

[0097] The regulating ball valve 2000 proposed in this application embodiment, having the flow regulating plate 1000 described in any of the above embodiments, can maintain a relatively constant regulating sensitivity across the entire flow range, avoiding the problems of over-sensitivity at low flow rates and lag at high flow rates, thereby significantly improving the accuracy and stability of flow regulation, making the regulating characteristics closer to equal percentage regulation, and improving the regulation precision.

[0098] As an example, the flow regulating ball valve 2000 can be used in pipelines for liquid fluid media such as water and oil, as well as in pipelines for gaseous fluid media such as natural gas; this application does not limit its use in this regard.

[0099] The flow regulating valve seat 400 disclosed in this application embodiment can be used for two-way ball valves, three-way ball valves, four-way ball valves, etc., and this application does not limit it.

[0100] In other embodiments, please refer to Figure 6 The valve body 200 has a protrusion 220 located in the first flow channel 210. The regulating ball valve 2000 also includes a valve seat 400, which has a second through hole 410. Along the axial direction of the first flow channel 210, the second through hole 410 is disposed opposite to the first through hole 110. The outer periphery of the flow regulating plate 1000 is sandwiched between the valve seat 400 and the protrusion 220.

[0101] In the above scheme, the end faces of the protrusion 220 and the valve seat 400 respectively form axial compression on the first end face 114 and the second end face 115 of the flow regulating plate 1000, forming axial positioning, reducing the probability of flow surging caused by fluid pulsation, and reducing the probability of flow control failure caused by the relative offset between the first through hole 110 and the opening of the valve core 300. The inner hole of the protrusion 220 forms a radial fit with the outer circle of the valve seat 400, forming a radial constraint. The outer periphery of the flow regulating plate 1000 is embedded in the annular gap, which can reduce the additional pressure loss caused by the flow channel deviation, thereby helping to improve control accuracy.

[0102] In other embodiments, please refer to Figure 4 , Figure 5 and Figure 6The valve body 200 has a first mounting protrusion 230 and a second mounting protrusion 240. Along the extension direction of the first flow channel 210, the first mounting protrusion 230 is disposed on the outer surface of one end of the valve body 200, and the second mounting protrusion 240 is disposed on the outer surface of the other end of the valve body 200.

[0103] Understandably, the first mounting protrusion 230 and the second mounting protrusion 240 provide clear physical reference points for the installation of the valve body 200. During the installation process, the installation position of the valve body 200 can be quickly and accurately determined based on the relative positional relationship between these two protrusions and other equipment or pipelines. On the one hand, this can improve operating efficiency, save installation time, reduce maintenance costs, and improve user experience. On the other hand, it can reduce the occurrence of problems such as misalignment of flow channels and misalignment of connections caused by installation position deviations.

[0104] In other words, the first mounting protrusion 230 and the second mounting protrusion 240 can play an auxiliary role in installation. When connecting the valve body 200 to other equipment or pipelines, the corresponding mounting structure of other equipment or pipelines can be aligned with these two protrusions, so as to achieve precise matching of the valve body 200 with other components in spatial position, reduce the positioning difficulty in the installation process, and improve installation efficiency and accuracy.

[0105] As an example, the first mounting protrusion 230 and the second mounting protrusion 240 can be installed by cooperating with the fasteners, which can be clamps, rings, etc., and this application does not limit them.

[0106] In a specific embodiment, with Figure 5 and Figure 6 Taking the center placement direction as an example, the left and right ends of the valve body 200 are also equipped with universal clamps, which can be used in HVAC and data center liquid cooling equipment to achieve quick connection with pipes. Compared with threaded connection, it saves installation time and maintenance costs.

[0107] In another specific embodiment 1, the ratio of the arc length of the first arc line 111 to the arc length of the second arc line 113 is 0.18, the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 is 1.3, the ratio of the arc length of the arc curve 112 to the arc length of the first arc line 111 is 2.4, and the angle between the first connecting line L and the first center line P is 40°.

[0108] In another specific embodiment 2, the ratio of the arc length of the first arc line 111 to the arc length of the second arc line 113 is 0.18, the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 is 1.5, the ratio of the arc length of the arc curve 112 to the arc length of the first arc line 111 is 2.4, and the angle between the first connecting line L and the first center line P is 40°.

[0109] In another specific embodiment 3, the ratio of the arc length of the first arc line 111 to the arc length of the second arc line 113 is 0.18, the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 is 1.3, the ratio of the arc length of the arc curve 112 to the arc length of the first arc line 111 is 2.6, and the angle between the first connecting line L and the first center line P is 40°.

[0110] In another specific embodiment 4, the ratio of the arc length of the first arc line 111 to the arc length of the second arc line 113 is 0.18, the ratio of the radius of the arc curve 112 to the radius of the first arc line 111 is 1.3, the ratio of the arc length of the arc curve 112 to the arc length of the first arc line 111 is 2.4, and the angle between the first connecting line L and the first center line P is 50°.

[0111] Please refer to Figure 7 In this figure, the horizontal axis represents the valve core opening of 300 degrees, the vertical axis represents the relative Kv value, curve a is the simulation curve of the above specific embodiment 1, curve b is the simulation curve of the above specific embodiment 2, curve c is the simulation curve of the above specific embodiment 3, curve d is the simulation curve of the above specific embodiment 4, and curve e is the theoretical curve of flow regulation characteristics.

[0112] The closer the curve is to the theoretical curve, the closer the actual flow regulation characteristics are to the theoretical flow regulation characteristics, which is considered superior. It can be seen that curve a is closest to the theoretical curve. Therefore, in the above four embodiments, the flow regulation characteristics of the regulating ball valve in specific embodiment 1 are closer to equal percentage regulation.

[0113] 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.

[0114] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. 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.

[0115] 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.

[0116] 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 flow regulating plate, characterized in that, Includes a plate body (100), wherein the plate body (100) has a first through hole (110) extending through the plate body (100) along its thickness direction. The projection of the first through hole (110) along the thickness direction of the plate body (100) includes: Two arc curves (112), the first through hole (110) has a first center line (P), the first center line (P) is perpendicular to the axis of the first through hole (110), the two arc curves (112) are respectively located on both sides of the first center line (P) and protrude towards each other, and each arc curve (112) has a first end (112a) close to the first center line (P) and a second end (112b) away from the first center line (P); A first arc line (111) connects the first ends (112a) of the two arc curves (112); The second arc line (113) has an opening opposite to the opening of the first arc line (111), and the second arc line (113) connects the second ends (112b) of the two arc curves (112). The center of the first arc (111) coincides with the center of the second arc (113).

2. The flow regulating plate according to claim 1, characterized in that, The ratio of the arc length of the first arc line (111) to the arc length of the second arc line (113) is 0.18 to 0.

19.

3. The flow regulating plate according to claim 1, characterized in that, The two arc curves (112) are symmetrically arranged about the first center line (P).

4. The flow regulating plate according to claim 3, characterized in that, The ratio of the radius of the arc curve (112) to the radius of the first arc line (111) is 1.3 to 1.

4.

5. The flow regulating plate according to claim 3, characterized in that, The ratio of the arc length of the arc curve (112) to the arc length of the first arc line (111) is in the range of 2.4 to 2.

5.

6. The flow regulating plate according to claim 3, characterized in that, The line connecting the center of the arc curve (112) and the center of the first arc line (111) is constructed as a first connecting line (L), and the angle between the first connecting line (L) and the first center line (P) is 40° to 45°.

7. The flow regulating plate according to claim 1, characterized in that, Along the thickness direction of the plate body (100), the plate body (100) has a first end face (114) and a second end face (115) disposed opposite to each other. The first through hole (110) penetrates the first end face (114) and the second end face (115). The first end face (114) is constructed as a plane, and the second end face (115) is constructed as an arc-shaped surface protruding toward the first end face (114).

8. A regulating ball valve, characterized in that, include: The valve body (200) has a first flow channel (210); A valve core (300) is rotatably disposed on the valve body (200) to regulate the flow rate of fluid flowing through the first flow channel (210); The flow regulating plate (1000) according to any one of claims 1-7 is disposed in the first flow channel (210).

9. The regulating ball valve according to claim 8, characterized in that, The valve body (200) has a protrusion (220) located in the first flow channel (210). The regulating ball valve (2000) also includes a valve seat (400). The valve seat (400) has a second through hole (410) along the axial direction of the first flow channel (210). The second through hole (410) is disposed opposite to the first through hole (110). The outer periphery of the flow regulating plate (1000) is sandwiched between the valve seat (400) and the protrusion (220).

10. The regulating ball valve according to claim 9, characterized in that, The valve body (200) has a first mounting protrusion (230) and a second mounting protrusion (240). Along the extension direction of the first flow channel (210), the first mounting protrusion (230) is disposed on the outer surface of one end of the valve body (200), and the second mounting protrusion (240) is disposed on the outer surface of the other end of the valve body (200).

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