Double-disc valve plate

Abstract

The utility model discloses a double dish -shaped valve plate, including the board body, the both sides of board body are equipped with the process block, the board body is circular dish -shaped, is equipped with a plurality of first arched plate and second arched plate in the recess of board body, and first arched plate and second arched plate form multilayer flow channel structure. The multistage flow channel formed by first, second arched plate setting is smooth to the guidance of fluid, and the sudden change of flow cross section is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and in particular relates to a double-disc valve plate. Background Technology

[0002] In the valve industry, the valve plate, as a key component for controlling fluid flow and control, has a crucial impact on valve performance and service life due to its structural design. Traditional valve plates suffer from insufficient structural strength and short service life, making it difficult to meet the needs of scenarios requiring high fluid control and long-term stable operation.

[0003] Existing valve plates have high flow resistance and high energy consumption. The traditional valve plate flow channel design is unreasonable, which can easily lead to sudden changes in fluid flow direction and abrupt changes in cross-section, resulting in significant turbulence and vortices, causing large pressure losses and increasing system operating energy consumption. Furthermore, under high pressure differential and high flow velocity conditions, the periodic vortex shedding (Karman vortex street) generated by fluid separation can cause high-frequency vibration of the valve plate and valve stem, producing harsh noise and potentially causing structural fatigue damage.

[0004] In modern industrial fluid control systems, valves are key control components, and their performance directly affects the efficiency, reliability, and energy consumption of the entire system. Traditional butterfly valves, ball valves, and gate valves often suffer from problems such as large pressure loss, low flow control accuracy, and turbulence when dealing with complex fluid conditions. These problems are particularly prominent in applications requiring precise control of fluid flow smoothness.

[0005] Traditional butterfly valves, ball valves, and gate valves each have their own structural design characteristics and limitations. Butterfly valves rely on a rotating disc-shaped closing element to adjust the fluid passage size; they are compact and lightweight, but prone to leakage under high pressure and have relatively low adjustment accuracy. Ball valves have a simple structure, are easy to operate, and have good sealing performance, but are not suitable for flow regulation and are relatively expensive. Gate valves have a large flow cross-section and are suitable for applications requiring large flow rates. Utility Model Content

[0006] In view of this, the present invention aims to propose a double-disc valve plate to solve at least one technical problem in the prior art.

[0007] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A double-disc valve plate includes a plate body, with process blocks on both sides of the plate body; The plate is circular and dish-shaped. Several first arched plates and second arched plates are provided in the groove of the plate. The first arched plates and second arched plates form a multi-layer flow channel structure.

[0008] Furthermore, the first arched plate and the second arched plate are set vertically.

[0009] Furthermore, the first arched plate is provided with several evenly distributed first guide holes.

[0010] Furthermore, the second arched plate is provided with several evenly distributed second guide holes.

[0011] Furthermore, the number of the first arched slabs is at least three.

[0012] Furthermore, the number of second arched plates is at least three, with two process blocks symmetrically arranged on one of the second arched plates, and the process blocks are trapezoidal.

[0013] Furthermore, mounting blocks are symmetrically arranged on both sides of the plate, and trapezoidal reinforcing plates are symmetrically arranged on the inner sides of the two mounting blocks.

[0014] Furthermore, both the mounting block and the trapezoidal reinforcing plate are provided with a third mounting hole.

[0015] Compared with the prior art, the double-disc valve plate of this utility model has the following advantages: This application utilizes a multi-stage flow channel formed by the arrangement of a first arched plate and a second arched plate to smoothly guide and accelerate the fluid, avoiding sudden changes in the flow cross-section. The multi-stage flow channel structure formed by the first and second arched plates of the double-disc valve plate enables smooth fluid guidance, effectively preventing sudden changes in the flow cross-section. Furthermore, the multi-stage flow channel design of the double-disc valve plate achieves precise control of fluid flow, significantly improving the smoothness of fluid flow while maintaining flow control functionality. The first and second guide holes serve to dissipate water and energy.

[0016] Traditional valves have a relatively simple structure. For example, butterfly valves are mainly composed of basic components such as valve body, valve plate, and valve stem. However, the internal structure of double-disc valve plates is more complex, including multi-stage arched plate structures, which also brings better fluid control performance. Compared with traditional butterfly valves, it can achieve better flow control accuracy and lower energy consumption at the same opening degree.

[0017] 3. The process block provides an interface for installation and fixation of the valve plate, and may also play a certain role in guiding flow.

[0018] 4. The dual-disc valve plate, through its multi-stage flow channel structure design, can effectively reduce pressure loss and improve the flow coefficient. Furthermore, due to its unique flow channel design, it may also offer advantages in flow control accuracy and response speed. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the double-disc valve plate proposed in this utility model; Figure 2 This is a side view of the double-disc valve plate proposed in this utility model; Figure 3 This is a schematic diagram of the inclined surface of the double-disc valve plate proposed in this utility model.

[0020] Explanation of reference numerals in the attached figures: 1. Plate body; 2. Mounting block; 3. First arched plate; 4. Second arched plate; 5. First guide hole; 6. Second guide hole; 7. Process block; 8. Trapezoidal reinforcing plate; 9. Third mounting hole. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1 A double-disc valve plate includes a plate body 1 with process blocks 7 on both sides. The plate body 1 is circular and disc-shaped. A first arched plate 3 and a second arched plate 4 are arranged within a groove in the plate body 1, and the first arched plate 3 and the second arched plate 4 are vertically arranged, forming a multi-layered flow channel structure. This application utilizes the multi-stage flow channels formed by the arrangement of the first arched plate 3 and the second arched plate 4 to smoothly guide and accelerate the fluid, avoiding sudden changes in the flow cross-section. The multi-stage flow channel structure formed by the first arched plate 3 and the second arched plate 4 of the double-disc valve plate enables smooth guidance of the fluid, effectively avoiding sudden changes in the flow cross-section. Furthermore, the multi-stage flow channel design of the double-disc valve plate achieves precise control of fluid flow, significantly improving the smoothness of fluid flow while maintaining flow control functionality. The first and second guide holes serve to dissipate water and energy.

[0026] The process block 7 provides an interface for installation and fixation of the valve plate 1, and may also serve a certain function of guiding flow. In practical applications, the design of the process block 7 needs to consider factors such as strength requirements, ease of installation, and impact on fluid flow. The depth and shape of the arc-shaped groove within the plate directly affect the geometric characteristics of the flow channel, and thus the flow characteristics of the fluid.

[0027] The valve plate body can be made of stainless steel (such as 304 or 316L), and the valve plate body is a one-piece molded structure of stainless steel, ensuring the integrity and surface finish of the complex internal flow channels. CNC precision machining of key mounting surfaces and subsequent processes ensures dimensional accuracy.

[0028] The tangent angles of the arched edges of the first arched plate 3 and the second arched plate 4 are both between 20° and 40°, preferably 30°. This uniformly increases the fluid velocity, effectively suppresses flow separation and vortex generation, thereby significantly reducing turbulence losses and the overall flow resistance coefficient, achieving energy saving and consumption reduction.

[0029] The first arched plate 3 has several evenly distributed first guide holes 5, and the second arched plate 4 has several evenly distributed second guide holes 6.

[0030] There are 3 first arched plates 3. There are 3 second arched plates 4. Two process blocks 7 are symmetrically arranged on one of the second arched plates 4. The process blocks 7 are trapezoidal.

[0031] Trapezoidal reinforcing plates 8 are symmetrically provided on the inner sides of the two mounting blocks 2, and a third mounting hole 9 is provided on both the mounting blocks 2 and the trapezoidal reinforcing plates 8.

[0032] The core structural feature of the double-disc valve plate lies in its unique multi-stage flow channel design. The valve plate mainly consists of a plate body 1, mounting blocks 2 on both sides, and an arc-shaped groove inside the plate body 1. The groove inside the plate body 1 is provided with a vertical first arched plate 3 and a second arched plate 4, forming a multi-layer flow channel structure.

[0033] Arched structures have unique advantages in fluid mechanics, as they can redistribute pressure gradients through passive deformation, thereby improving fluid efficiency. In a double-disc valve plate, the arrangement of the first arched plate 3 and the second arched plate 4 forms a "wave-like" flow channel profile. This structural design can effectively guide fluid flow and reduce flow separation and vortex generation.

[0034] The process block 7 provides an interface for mounting and fixing the valve plate, and may also serve a certain function of guiding flow. In practical applications, the design of the mounting block 7 needs to consider factors such as strength requirements, ease of installation, and impact on fluid flow. The depth and shape of the arc-shaped groove within the plate directly affect the geometric characteristics of the flow channel, and thus the flow characteristics of the fluid.

[0035] The double-disc valve plate, through its multi-stage flow channel structure design, effectively reduces pressure loss and improves the flow coefficient. Simultaneously, its unique flow channel design may also offer advantages in flow control accuracy and response speed. Through optimized structural design, the curved design of the arched plate in the double-disc valve plate perfectly aligns with this optimization concept, effectively guiding fluid flow and preventing the formation of local high-speed regions. The flow field characteristics under different flow rate and opening conditions were analyzed to evaluate the flow stability of the double-disc valve plate. The results show that the double-disc valve plate can maintain a stable flow state over a wide flow range (flow coefficient Kv = 12.0~270.0).

[0036] Example 2 The plate 1 is circular and disc-shaped, with symmetrical mounting blocks 2 on both sides, each with a third mounting hole 9. The mounting blocks 2 are used to fix the valve plate to the valve stem and actuator using bolts. Symmetrical arc-shaped grooves are machined inside the plate 1. Within these grooves, three first arched plates 3 and three second arched plates 4 are arranged alternately, all perpendicular to the plane of the plate. The surface of the first arched plate 3 is perpendicular to the mounting surface of the mounting block 2. Multiple first guide holes 5 are evenly distributed on it for weight reduction, pressure balancing, and disrupting the flow boundary layer.

[0037] The surface of the second arched plate 4 is parallel to the mounting surface of the mounting block 2. Multiple second guide holes 6 are evenly distributed on it. Trapezoidal process blocks 7 are symmetrically arranged on both sides of the middle section of the second arched plate 4.

[0038] Inside the two mounting blocks 2, a trapezoidal reinforcing plate 8 is integrally formed on the mounting block 2, and a third mounting hole 9 is also machined on it. The mounting block 2 uses the third mounting hole 9 for fixing the valve plate to the valve stem and the actuator with bolts, so that the clamping force of the bolts acts on the reinforced area.

[0039] In practical implementation, when the valve is opened, fluid flows in from the inlet and first encounters the first arched plate 3 of the first group. The fluid is smoothly divided and guided, and the flow velocity begins to increase. Subsequently, the fluid enters the space between the first arched plate 3 and the second arched plate 4, where it is further regulated and stabilized by the second arched plate 4, reducing turbulence. This process is repeated in multiple stages, ultimately allowing the fluid to pass through the valve plate in a uniform, high-speed, and stable state before flowing out from the valve outlet. The reinforcing plate 8 ensures the rigidity of the entire structure under fluid impact.

[0040] This valve plate, with its first and second arched plates forming a multi-layered flow channel structure, achieves smooth fluid guidance. CFD simulation technology was used to analyze the flow characteristics of the multi-stage flow channels, comparing the performance differences with traditional valve plate structures. The study found that the multi-stage flow channel structure of the double-disc valve plate can reduce pressure loss by 63%, increase the flow coefficient by 2.5 times, and significantly improve fluid smoothness. Compared with traditional butterfly valves, it achieves better flow control accuracy and lower energy consumption at the same opening degree. This technology has broad application prospects in petrochemical, water treatment, and precision instrument cooling fields, especially showing significant advantages in operating conditions with high requirements for fluid smoothness. The research results provide theoretical basis and technical support for the engineering application and structural optimization of double-disc valve plates.

[0041] Double-disc valves can handle larger flow rates or generate less pressure loss for the same flow rate. They exhibit excellent control characteristics under low flow conditions. Their multi-stage flow channel design allows them to maintain relatively stable flow characteristics even at small openings, with the flow coefficient exhibiting an approximately linear trend with the opening degree. This characteristic is beneficial for achieving precise low-flow control.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-disc valve plate, characterized in that: Includes a plate body, with process blocks on both sides of the plate body; The plate is circular and dish-shaped. Several first arched plates and second arched plates are provided in the groove of the plate. The first arched plates and second arched plates form a multi-layer flow channel structure.

2. The double-disc valve plate according to claim 1, characterized in that: The first and second arched slabs are set perpendicularly.

3. The double-disc valve plate according to claim 1, characterized in that: The first arched plate has several evenly distributed first guide holes.

4. The double-disc valve plate according to claim 1, characterized in that: The second arched plate has several evenly distributed second guide holes.

5. The double-disc valve plate according to claim 1, characterized in that: The number of the first arched slabs is at least 3.

6. The double-disc valve plate according to claim 1, characterized in that: The number of second arched plates is at least 3, and two process blocks are symmetrically arranged on one of the second arched plates. The process blocks are trapezoidal.

7. The double-disc valve plate according to claim 1, characterized in that: The plate has symmetrical mounting blocks on both sides, and trapezoidal reinforcing plates are symmetrically arranged on the inner sides of the two mounting blocks.

8. The double-disc valve plate according to claim 7, characterized in that: Both the mounting block and the trapezoidal reinforcing plate are provided with a third mounting hole.

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