Rotary orifice plate flow device

Abstract

The utility model relates to a rotary orifice plate flow device which comprises a flow guide main body and an orifice plate main body, and the flow guide main body is provided with a flow channel and a movable cavity communicated with the flow channel; the pore plate body is movably arranged in the movable cavity, a plurality of flow dividing holes with different hole diameters are formed in the pore plate body in a penetrating mode, and the pore plate body is used for being driven to move in the movable cavity so that one flow dividing hole can be communicated with the flow channel. According to the rotating pore plate flow device, the pore diameter adjusting flexibility is high, by driving the pore plate body to move in the movable cavity, the flow dividing holes with different pore diameters can be conveniently communicated with the flow channel, pore diameter adjusting can be rapidly achieved, and it is not needed to spend a large amount of time to replace the pore plate. The pore diameter can be quickly adjusted by driving the pore plate main body to move in the movable cavity under the condition that a pipeline and equipment are not disassembled, so that the device can respond to the change of the working condition in time in real time, and when the working condition is changed, different pore diameters can be adjusted to limit the flow and reduce the pressure.

Description

Technical Field

[0001] This application relates to the field of flow regulation technology, and in particular to a rotary orifice plate flow device. Background Technology

[0002] In fluid design, orifice plates are frequently used for operations such as flow restriction and pressure reduction. When conditions or operating conditions change, orifice plates of different diameters need to be replaced. Replacing orifice plates requires disassembling pipes or equipment. Some special equipment can only be disassembled after it has completely cooled down or been depressurized, making the orifice plate replacement process cumbersome and time-consuming. Utility Model Content

[0003] Therefore, it is necessary to provide a rotary orifice plate flow device to address the current problem of cumbersome and time-consuming replacement of orifice plates with different orifice diameters.

[0004] A rotating orifice plate flow device, comprising:

[0005] The flow guiding body includes a flow channel and a movable cavity communicating with the flow channel; and

[0006] The orifice plate body is movably disposed within the movable cavity. The orifice plate body is provided with multiple flow-diverting holes of different diameters. The orifice plate body is driven to move within the movable cavity so that one of the flow-diverting holes communicates with the flow channel.

[0007] In one embodiment, the flow guiding body includes a movable part and a flow guiding part that are connected to each other. The movable part includes a first end and a second end that are opposite to each other along its own axial direction. The flow guiding part is disposed at the first end and the second end. The movable part protrudes from the outer wall of the flow guiding part. The movable part is provided with the movable cavity. The flow guiding part is provided with the flow channel. The orifice plate body is accommodated in the movable part and can movably abut against the inner wall of the movable part and the inner wall of the flow guiding part.

[0008] In one embodiment, the movable part includes a first part and a second part that are bent and connected. The first part protrudes from the outer wall of the flow guide and extends in a direction away from the flow guide in the radial direction of the flow guide. The second part is circumferentially disposed around the outer periphery of the flow guide. The first part is disposed at the first end and the second end of the second part. The second part and the first part are bent and connected to form a first receiving step disposed in the movable cavity. The rotating orifice plate flow device also includes a first sealing member, which is circumferentially disposed on the first receiving step and abuts against the orifice plate body.

[0009] In one embodiment, the movable part is provided with an operating hole communicating with the movable cavity, and the orifice plate body is provided with an operating structure. The operating hole and the operating structure are both located between the two first parts. The operating structure is exposed in the operating hole and is used to be driven to move the orifice plate body.

[0010] In one embodiment, the inner wall of the flow guide is recessed along its own axis at the first end near the movable part, and the rotating orifice plate flow device further includes a second seal, which is circumferentially disposed on the second receiving step and abuts against the orifice plate body.

[0011] In one embodiment, the second receiving step is connected to the first end of the movable part at an inverted toroidal surface.

[0012] In one embodiment, the guide portion is connected to the second end of the movable portion in a rounded toroidal surface.

[0013] In one embodiment, the radial dimension d1 of the flow channel of the guide portion at the first end is smaller than the radial dimension d2 of the flow channel of the guide portion at the second end.

[0014] In one embodiment, the orifice plate body is at least partially spherical, the orifice plate body is rotatably disposed within the movable cavity, the orifice plate body is provided with a flow guide opening communicating with a plurality of the diversion holes, the orifice plate body is driven to roll in the movable cavity, such that one of the diversion holes and the flow guide opening are both in communication with the flow channel.

[0015] In one embodiment, the orifice plate body is driven to roll along a first direction, and a plurality of diversion holes are spaced apart along the first direction, with the diameter of the plurality of diversion holes increasing sequentially along the first direction.

[0016] The aforementioned rotary orifice plate flow device offers high flexibility in orifice diameter adjustment, featuring multiple branch orifices of varying diameters on the orifice plate body. By driving the orifice plate body within the movable chamber, different orifice diameters can be easily connected to the flow channel, enabling rapid orifice diameter adjustment without the need for extensive orifice plate replacement. Because the orifice diameter can be quickly adjusted by driving the orifice plate body within the movable chamber without disassembling the pipes and equipment, the device can respond promptly and in real-time to changes in operating conditions. When operating conditions change, different orifice diameters can be adjusted to limit flow and reduce pressure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a rotating orifice plate flow device provided in an embodiment of this application.

[0019] Figure 2 (a) is a top view of a rotating orifice plate flow device provided in an embodiment of this application, showing the first diversion orifice communicating with the flow channel, and (b) is a cross-sectional view along the AA direction in (a).

[0020] Figure 3 (a) is a side view of a rotating orifice plate flow device provided in an embodiment of this application, showing the first diversion orifice communicating with the flow channel, and (b) is a cross-sectional view along the BB direction in (a).

[0021] Figure 4 (a) is a top view of a rotating orifice plate flow device provided in an embodiment of this application, showing the second diversion orifice communicating with the flow channel, and (b) is a cross-sectional view along the CC direction in (a).

[0022] Figure 5 (a) is a side view of a rotating orifice plate flow device provided in an embodiment of this application, showing the second diversion orifice communicating with the flow channel, and (b) is a cross-sectional view along the DD direction in (a).

[0023] Figure 6 (a) is a top view of a rotating orifice plate flow device provided in an embodiment of this application, showing the third diversion orifice communicating with the flow channel, and (b) is a cross-sectional view along the EE direction in (a).

[0024] Figure 7 (a) is a side view of a rotating orifice plate flow device provided in an embodiment of this application, showing the third diversion orifice communicating with the flow channel, and (b) is a cross-sectional view along the FF direction in (a).

[0025] Figure 8 This is a schematic diagram of the assembly of the flow guiding body, the first seal, and the second seal provided in the embodiments of this application.

[0026] Figure 9(a) is a cross-sectional view of the flow guiding body provided in the embodiment of this application from a first perspective; (b) is a cross-sectional view of the flow guiding body provided in the embodiment of this application from a second perspective; and (c) is a cross-sectional view of the flow guiding body provided in the embodiment of this application from a third perspective.

[0027] Figure 10 (a) is a structural schematic diagram of the orifice plate body provided in the embodiment of this application from a first perspective; (b) is a structural schematic diagram of the orifice plate body provided in the embodiment of this application from a second perspective; and (c) is a structural schematic diagram of the orifice plate body provided in the embodiment of this application from a third perspective.

[0028] Explanation of reference numerals in the attached drawings: 100, Rotary orifice plate flow device; 1, Flow guiding body; 11, Movable part; 111, First end; 112, Second end; 113, First part; 114, Second part; 115, First receiving step; 116, Operating hole; 117, Movable cavity; 12, Flow guiding part; 121, Second receiving step; 122, Chamfered annular surface; 123, Flow channel; 124, Rounded corner annular surface; 2, Orifice plate body; 21, Flow dividing hole; 22, Operating structure; 23, Flow guiding opening; 24, Flow guiding cavity; 241, Cylindrical cavity; 242, Spherical crown cavity; 3, First sealing element; 4, Second sealing element. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] Please see Figure 1 This application provides a rotating orifice plate flow device 100, including a flow guiding body 1 and an orifice plate body 2. The rotating orifice plate flow device 100 can replace flow dividers 21 with different orifice diameters.

[0031] Please see Figures 2 to 7 , Figure 2 and Figure 3 This is a schematic diagram of the structure of the rotating orifice plate flow device 100 under the first orifice diameter. Figure 4 and Figure 5 This is a schematic diagram of the rotating orifice plate flow device 100 under the second orifice diameter. Figure 6 and Figure 7This is a schematic diagram of the rotary orifice plate flow device 100 under a third orifice diameter. The flow guide body 1 has a flow channel 123 and a movable cavity 117 communicating with the flow channel 123; the orifice plate body 2 is movably disposed in the movable cavity 117, and the orifice plate body 2 has multiple flow-diverting holes 21 with different orifice diameters. The orifice plate body 2 is driven to move in the movable cavity 117 so that one of the flow-diverting holes 21 communicates with the flow channel 123. The rotary orifice plate flow device 100 provided in this embodiment has high orifice diameter adjustment flexibility, and the orifice plate body 2 has multiple flow-diverting holes 21 with different orifice diameters. By driving the orifice plate body 2 to move in the movable cavity 117, the flow-diverting holes 21 with different orifice diameters can be easily connected to the flow channel 123, and the orifice diameter can be quickly adjusted without spending a lot of time replacing the orifice plate. Because the orifice diameter can be quickly adjusted by moving the orifice plate body 2 within the movable cavity 117 without disassembling the pipes and equipment, the device can respond promptly and in real time to changes in operating conditions. When the operating conditions change, different orifice diameters can be adjusted to limit flow and reduce pressure.

[0032] Furthermore, the rotary orifice plate flow device 100 provided in this application embodiment features a compact structure, high integration, high reliability, and ease of automated control. The flow guide body 1 of the device integrates a flow channel 123 and a movable cavity 117 communicating with the flow channel 123. The orifice plate body 2 is movably disposed within the movable cavity 117. This compact and non-dispersed structural design makes the installation of the entire device in the pipeline system more convenient, requiring no additional connecting parts or a large installation space. Since the orifice plate body 2 moves within the movable cavity 117 to select the appropriate diversion hole 21 communicating with the flow channel 123, this relatively closed structure reduces interference from external factors on the orifice plate. It reduces the impact of dust, small stones, and other impurities on the normal rotation and orifice selection function of the orifice plate, thereby improving the reliability and service life of the device. The orifice plate body 2 is driven to move within the movable cavity 117, a design that facilitates integration with an automated control system. The rotation angle of the orifice plate body 2 can be precisely controlled by a drive device such as a motor, thereby accurately selecting the required diversion hole 21.

[0033] Please see Figure 8 In some embodiments, the flow guiding body 1 includes a movable part 11 and a flow guiding part 12 that are connected to each other. The movable part 11 includes a first end 111 and a second end 112 that are opposite each other along its own axial direction. The flow guiding part 12 is disposed at the first end 111 and the second end 112 respectively. The movable part 11 protrudes from the outer wall of the flow guiding part 12 and is provided with a movable cavity 117. The flow guiding part 12 is provided with a flow channel 123. Please refer to [link / reference]. Figures 2 to 7The orifice plate body 2 is housed within the movable portion 11 and can movably abut against the inner wall of the movable portion 11 and the inner wall of the guide portion 12. It is understood that the movable portion 11 protruding from the outer wall of the guide portion 12 means that the movable portion 11 spatially protrudes outward from the outer wall of the guide portion 12. The protrusion of the movable portion 11 from the outer wall of the guide portion 12 provides convenient installation space for the drive mechanism that drives the orifice plate body 2, making it easier to install drive components to drive the orifice plate body 2 to rotate. Because there is sufficient external space, it is not necessary to arrange drive components inside the narrow guide portion 12 or close to the outer wall of the guide portion 12, making the installation, debugging, and maintenance of the drive mechanism easier. When fluid flows in the flow channel 123 of the guide portion 12, the protrusion of the movable portion 11 from the outer wall allows the movable portion 11 and the internal orifice plate body 2 to avoid direct impact from the fluid to a certain extent, guiding the fluid more smoothly from the flow channel 123 of the guide portion 12 into the movable portion 11. If the movable part 11 and the guide part 12 are on the same plane, or if the movable part 11 is recessed inside the guide part 12, then changes in fluid pressure or high-speed fluid flow within the flow channel 123 may significantly interfere with the movement of the orifice plate body 2. The protruding movable part 11 can better disperse pressure from the outside. For example, when there are abnormal pressure fluctuations in the piping system, the movable part 11 protruding from the outer wall of the guide part 12 can better disperse the pressure between the guide part 12 and the movable part 11, rather than concentrating it in a localized area, thereby enhancing the structural strength and stability of the entire guide body 1.

[0034] The orifice plate body 2 is driven to connect one of the flow diversion holes 21 with the flow channel 123. In other words, the flow diversion hole 21 is connected to the flow channels 123 of the two flow guides 12 located at the first end 111 and the second end 112 of the movable part 11, so that the fluid can pass through the flow channel 123.

[0035] Please see Figure 9 In embodiments (a), (b), and (c), the movable portion 11 includes a first portion 113 and a second portion 114 that are bent and connected. The first portion 113 protrudes from the outer wall of the guide portion 12 and extends in a direction away from the guide portion 12 along the radial direction of the guide portion 12. The second portion 114 is circumferentially disposed around the outer periphery of the guide portion 12. The first portion 113 is disposed at a first end 111 and a second end 112 of the second portion 114. The second portion 114 and the first portion 113 are bent and connected to form a first receiving step 115 disposed within the movable cavity 117. Please refer to [reference needed]. Figure 8The rotary orifice plate flow device 100 also includes a first seal 3, which is annularly disposed on the first receiving step 115 and abuts against the orifice plate body 2. The first seal 3 prevents fluid leakage: in the rotary orifice plate flow device 100, fluid flows in the flow channel 123 of the flow guide body 1. The first seal 3 effectively prevents fluid from leaking out from the gap between the moving part 11 and the orifice plate body 2. Without the first seal 3, fluid may bypass the orifice plate body 2, leading to inaccurate flow measurement and inability to perform normal flow limiting and pressure reduction operations. Ensuring normal operation of the rotary orifice plate flow device 100: a good seal ensures a stable internal pressure environment. If leakage occurs, the internal pressure of the rotary orifice plate flow device 100 will fluctuate, which will affect the normal operation of the orifice plate body 2, for example, causing the orifice plate body 2 to be unable to accurately switch the connection between the diverter orifice 21 and the flow channel 123. Improving the accuracy of the rotary orifice plate flow device 100: By preventing leakage, the first seal 3 allows all fluid to pass through the diversion hole 21 of the orifice plate body 2, thereby ensuring the accuracy of flow measurement and control. The first receiving step 115 provides a stable installation position for the first seal 3. Since the first receiving step 115 is formed by bending and connecting the second part 114 and the first part 113, it has a certain structural stability. The first seal 3, installed in this position, will not easily shift and can always remain in the appropriate position to perform a sealing function. The first receiving step 115 surrounds the movable cavity 117. When the first seal 3 is arranged around the first receiving step 115, it can form a good circumferential seal with the orifice plate body 2. This circumferential sealing method can effectively cover the annular gap between the movable cavity 117 and the orifice plate body 2, and can more comprehensively prevent fluid leakage compared to other irregular sealing positions. For example, in a circular pipeline system, the circumferential seal can better adapt to the pressure distribution of the fluid and provide a uniform sealing force. Auxiliary support and positioning of the orifice plate body 2: When the first sealing element 3 is annularly disposed on the first receiving step 115 and abuts against the orifice plate body 2, it can, to a certain extent, help fix the position of the orifice plate body 2. The first sealing element 3 itself has a certain elasticity and thickness, which can fill any small gaps that may exist between the orifice plate body 2 and the first receiving step 115, making the position of the orifice plate body 2 more stable in the movable cavity 117. This helps to maintain its axial and radial stability during device operation, especially when the orifice plate body 2 rotates to switch the diversion hole 21, ensuring that the diversion hole 21 and the flow channel 123 can be accurately connected. Buffering and shock absorption: During fluid flow, vibration and pressure fluctuations may occur. The first sealing element 3 can play a buffering and shock absorption role, reducing the impact of these vibrations and pressure fluctuations on the orifice plate body 2. For example, when the fluid velocity in the pipeline changes suddenly, an impact force will be generated, which may cause the orifice plate body 2 to vibrate.The first seal 3 can absorb part of the impact force, protecting the orifice plate body 2 and other internal components, and extending the service life of the device. Uniform pressure distribution: The first seal 3, surrounding the first receiving step 115, enables a more uniform pressure distribution on the orifice plate body 2. When fluid flows through the orifice plate body 2, it exerts pressure. Because the first seal 3 surrounds the first receiving step 15, it can transmit the pressure more evenly to the periphery of the orifice plate body 2, avoiding excessive local pressure that could cause deformation or damage to the orifice plate body 2. This is crucial for ensuring the structural integrity and normal operation of the orifice plate body 2, especially when handling high-pressure fluids. The first receiving step 115 is formed by the structure of the movable part 11 itself; placing the first seal 3 here fully utilizes the internal space of the device, making the device structure more compact.

[0036] Please see Figure 8 In some embodiments, the inner wall of the guide portion 12, near the first end 111 of the movable portion 11, is recessed along its own axial direction with a second receiving step 121. The rotary orifice plate flow device 100 also includes a second seal 4, which is annularly disposed on the second receiving step 121 and abuts against the orifice plate body 2. In the rotary orifice plate flow device 100, the first seal 3 prevents fluid leakage from the movable portion 11 side, while the second seal 4, located on the inner wall of the guide portion 12 near the first end 111 of the movable portion 11, forms a bidirectional seal. This greatly reduces the possibility of fluid leakage from the gap between the orifice plate body 2 and the guide portion 12 and the movable portion 11. For example, when handling high-pressure, high-viscosity fluids, this bidirectional sealing structure ensures that the fluid can only pass through the diversion hole 21 of the orifice plate body 2, guaranteeing the accuracy of flow control. Guiding fluid flow direction: The second seal 4, annularly disposed on the second receiving step 121 of the inner wall of the guide portion 12, helps guide the fluid to flow along a predetermined path near the orifice plate body 2. When the fluid encounters the second seal 4, it is more likely to leak through the diversion hole 21 of the orifice plate body 2 rather than through other possible gaps. This makes the fluid flow more orderly, reduces turbulence, and improves the accuracy of the device in controlling fluid flow and pressure. It also reduces local pressure changes: when the fluid is guided by the second seal 4 through the diversion hole 21 of the orifice plate body 2, local pressure changes caused by fluid leakage at unexpected locations can be avoided.

[0037] It should be noted that since the first part 113 of the movable part 11 is located at the first end 111 and the second end 112 of the second part 114, two first receiving steps 115 are formed between the first part 113 and the second part 114. In this embodiment, the first sealing element 3 includes two elements, each located on its corresponding first receiving step 115. It is understood that fluid enters the orifice plate body 2 from the flow channel 123 of the guide part 12 located at the first end 111 of the movable part 11, exits through the diversion hole 21 of the orifice plate body 2, and then exits from the flow channel 123 of the guide part 12 located at the second end 112 of the movable part 11. This achieves sealing of the inlet and outlet: when fluid enters the orifice plate body 2 from the flow channel 123 of the guide part 12 located at the first end 111 of the movable part 11, the first sealing element 3 and the second sealing element 4 near the first end 111 can prevent fluid leakage at the inlet. Similarly, when fluid flows out from the diversion hole 21 of the orifice plate body 2, it flows out through the flow channel 123 of the guide section 12 located at the second end 112 of the moving part 11. The first seal 3 near the second end 112 can prevent fluid leakage at the outlet. Adapting to fluid pressure changes: During fluid flow, the pressure conditions at the inlet and outlet may differ. At the inlet side, the fluid pressure pushes the fluid into the orifice plate body 2; at the outlet side, the pressure changes after the fluid passes through the diversion hole 21. The two first seals 3 can adapt to the pressure changes at their respective locations, better handling this pressure difference. Precise flow path control: By sealing the fluid inlet and outlet positions, it can be ensured that all fluid passes through the diversion hole 21 of the orifice plate body 2. This is crucial for accurate flow measurement and control. If leakage occurs at the inlet or outlet, the actual amount of fluid passing through the diversion hole 21 will differ from the measured value, leading to deviations in flow control. Stable fluid flow state: The presence of the two first seals 3 helps maintain a stable fluid flow state around the orifice plate body 2. They can reduce turbulence and backflow during fluid flow. When the fluid flows steadily through the diversion orifice 21, the flow rate can be calculated and controlled more accurately based on the orifice diameter, avoiding flow measurement errors caused by unstable fluid flow.

[0038] Furthermore, both first seals 3 are mounted on the first receiving step 115, allowing for a tight fit with the fluid path: fluid enters from the flow channel 123 of the guide section 12 at the first end 111 of the movable part 11, passes through the orifice plate body 2, and then exits from the flow channel 123 of the guide section 12 at the second end 112 of the movable part 11. The first receiving step 115 is located precisely at the critical position for fluid entry and exit, allowing the seal to directly act on the path where fluid leakage may occur, forming an effective sealing barrier and ensuring that the fluid flows along the predetermined channel. Stable sealing based on the step structure: The first receiving step 115 provides a stable mounting base for the seal. The step structure allows the seal to fit better in the corresponding position, forming a tight contact with the inner walls of the orifice plate body 2, the guide section 12, and the movable part 11. Compared to setting seals in other planar or irregular positions, this step-based installation method provides a more reliable sealing effect because it can better resist the impact of fluid pressure on the seal and reduce the possibility of seal displacement or deformation. Synergistic Sealing Effect: The two seals work together on the first receiving step 115. The two first seals 3 primarily seal the area between the moving part 11 and the orifice plate body 2. Their cooperation allows for more precise control of the fluid flow path, reducing the risk of leakage and thus improving the overall sealing efficiency of the device. Precise Control of the Flow Measurement Area: The area where fluid passes through the diversion hole 21 of the orifice plate body 2 can be accurately defined. This allows for more accurate measurement and control of the fluid flow rate, as only fluid passing through the diversion hole 21 is counted in the flow calculation, avoiding flow measurement errors caused by leakage. Centralized Installation Location: Placing the first seals 3 on the first receiving step 115 results in a relatively centralized installation location. During installation, workers can more easily operate both first seals 3 simultaneously, reducing installation time and workload. Furthermore, this centralized location facilitates unified inspection and maintenance of the seals. For example, during routine equipment maintenance, maintenance personnel can more easily locate the seals, check their wear, or replace them.

[0039] Please see Figure 8 and Figure 9In some embodiments, the second receiving step 121 is connected to the first end 111 of the movable part 11 at an angled toroidal surface 122. This arrangement reduces fluid resistance: the angled toroidal surface 122 connection allows for smoother fluid flow. Compared to a right-angle connection, the angle reduces sudden changes in fluid flow and the generation of turbulence. This helps reduce fluid flow resistance within the device, improves fluid transport efficiency, and reduces energy loss. It also enhances structural stability: the angled toroidal surface 122 connection provides a certain degree of transition in structure, which can disperse stress. When the device is subjected to fluid pressure or external mechanical forces during operation, this connection method can better withstand these forces, reducing the possibility of stress concentration at the connection point. In contrast, right-angle connections are prone to stress concentration at corners, which may lead to structural damage over long-term use. For example, in high-pressure fluid systems, the angled toroidal surface 122 connection can improve the safety and reliability of the device and extend its service life. Facilitating Seal Installation and Enhancing Sealing Performance: For seals mounted on the second receiving step 121, the chamfered toroidal surface 122 provides a better mounting surface, allowing the second seal 4 to fit more tightly against this transition surface. This increases the sealing contact area between the second seal 4 and the second receiving step 121, thereby improving the sealing effect. Furthermore, the chamfered shape makes the seal easier to position during installation, reducing installation errors. Improving Fluid Flow Uniformity: The chamfered toroidal surface 122 connection allows for more uniform fluid flow when entering the area of ​​the second receiving step 121. This helps avoid situations where local flow velocities are too fast or too slow, reducing uneven impact of the fluid on the orifice plate body 2 and the seal. Uniform fluid flow improves the stability and reliability of the device, and also contributes to improved flow measurement accuracy. For example, in flow metering devices, stable fluid flow is crucial for accurate flow measurement, and the chamfered toroidal surface 122 connection provides better fluid conditions for accurate flow measurement.

[0040] Please see Figure 8 and Figure 9 In some embodiments, the guide portion 12 is connected to the second end 112 of the movable portion 11 with a rounded toroidal surface 124. This reduces fluid resistance: the rounded toroidal surface 124 connection allows for a smoother transition of fluid as it flows from the second end 112 of the movable portion 11 to the guide portion 12. Compared to a right-angle connection, this smooth transition reduces sudden changes in fluid flow, lowering local resistance and energy loss. The rounded toroidal surface 124 allows for more free movement of the orifice plate body 2. It also improves sealing performance: for areas requiring sealing, the rounded toroidal surface 124 connection provides a better mounting surface for the first seal 3. The first seal 3 can fit more tightly against the smooth surface, increasing the sealing contact area and thus improving the sealing effect.

[0041] Please see Figure 9 In some embodiments (c), the radial dimension d1 of the flow channel 123 of the guide portion 12 at the first end 111 is smaller than the radial dimension d2 of the flow channel 123 of the guide portion 12 at the second end 112. This enables a fluid acceleration effect: when the fluid flows from the end with the smaller radial dimension (d1) to the end with the larger radial dimension (d2), according to the principle of fluid continuity, the fluid velocity decreases while the pressure increases accordingly. This increase in pressure can, to some extent, compensate for the energy loss of the fluid during flow, improving the fluid transport efficiency. For example, in long-distance fluid transport pipeline systems, by reasonably setting this gradually changing flow channel 123 size, the pumping power requirement can be reduced, and operating costs can be lowered. Reduced turbulence and energy loss: a smaller radial inlet allows the fluid to enter the device more smoothly, reducing the generation of turbulence. As the fluid gradually flows towards the region with the larger radial dimension, the fluid flow space increases, the flow velocity decreases, and the possibility of turbulence is further reduced. Turbulence leads to increased fluid energy loss, pressure fluctuations, and accelerated wear on internal components of the device. By setting the dimensions of this flow channel 123, energy loss can be effectively reduced, and the stability and reliability of the system can be improved. Reduced pressure shock: When fluid suddenly enters or leaves the device, if the dimensions of the flow channel 123 change too drastically, a large pressure shock may occur. By setting a gradually changing flow channel 123 dimension, this pressure shock can be mitigated, reducing the risk of damage to internal components. For example, in fluid systems with frequent start-stop cycles, this design can improve the device's service life and safety. Uniform stress distribution: Flow channels 123 with different radial dimensions can make the stress distribution inside the device more uniform. During fluid flow, the device is subjected to fluid pressure and external mechanical forces. By rationally designing the dimensions of the flow channel 123, stress can be distributed more evenly inside the device, reducing local stress concentration and improving the structural stability of the device.

[0042] Please see Figure 10In some embodiments, the orifice plate body 2 is at least partially spherical. The orifice plate body 2 is rolled within the movable cavity 117. The orifice plate body 2 has a through-hole 23 communicating with multiple diversion holes 21. The orifice plate body 2 is driven to roll within the movable cavity 117, with one of the diversion holes 21 and the through-hole 23 both communicating with the flow channel 123. The orifice plate body 2, being at least partially spherical, offers omnidirectional flexibility: as a sphere, the orifice plate body 2 can achieve omnidirectional rolling within the movable cavity 117. Compared to orifice plate bodies 2 of other shapes, the sphere has less rotational resistance in all directions, enabling faster and more accurate response to the drive and adjustment to the desired position. For example, in operating conditions requiring frequent switching of the diversion holes 21 to adapt to different flow requirements, the spherical orifice plate body 2 can complete the adjustment more efficiently, improving the system's response speed and adaptability. The spherical shape ensures that the orifice plate body 2 maintains a relatively stable contact state with the inner wall of the movable cavity 117 and the inner wall of the guide section 12 during rolling, regardless of the angle from which it contacts them. This helps ensure the positional accuracy of the orifice plate body 2 within the movable cavity 117, allowing the diversion orifice 21 and the guide opening 23 to communicate more accurately with the flow channel 123, thus improving the accuracy of flow control. Uniform fluid force distribution: When fluid flows through the spherical orifice plate body 2, the force exerted by the fluid on the orifice plate body 2 is uniformly distributed across the spherical surface. This uniform force distribution reduces deformation and vibration of the orifice plate body 2 under fluid action, improving the stability and reliability of the device. For example, in high-pressure fluid systems, the spherical orifice plate body 2 can better withstand fluid pressure, reducing the risk of damage to the orifice plate body 2 due to uneven pressure. The uniform fluid force distribution also minimizes fluid interference during the rolling adjustment of the orifice plate body 2. This helps ensure the smoothness of the orifice plate body 2 during rolling, avoiding positional deviations due to fluid interference and ensuring accurate communication between the diversion orifice 21 and the flow channel 123. Reduced wear and energy loss: The rolling motion of the sphere has a lower coefficient of friction compared to the sliding or rotating motion of other shaped orifice plate bodies 2. This means that less wear occurs when the orifice plate body 2 is driven to roll within the moving chamber 117, extending the service life of both the orifice plate body 2 and the device. For example, in long-running fluid systems, reduced wear can lower maintenance costs and downtime. A low coefficient of friction also reduces energy loss. When fluid flows through the orifice plate body 2, energy loss due to friction reduces system efficiency. The low-friction characteristics of the spherical orifice plate body 2 help improve the energy utilization of the fluid system and reduce operating costs. Compact design: The spherical orifice plate body 2 occupies relatively little space within the moving chamber 117, allowing for a more compact device design. This is highly advantageous in space-constrained installation environments, such as in miniaturized fluid control equipment or complex piping systems, where the spherical orifice plate body 2 can achieve effective flow control without significantly increasing space requirements.

[0043] Please see Figure 10In optional embodiment (b), the flow guide opening 23 and the plurality of flow dividers 21 are arranged opposite to each other along the axial direction of the movable part 11. The plurality of flow dividers 21 are located on the side of the movable part 11 near the first end 111, and the flow guide opening 23 is located on the side of the movable part 11 near the second end 112. The radial dimension of the flow channel 123 of the flow guide 12 corresponding to the flow guide opening 23 is larger than the radial dimension of the flow channel 123 of the flow guide 12 corresponding to the plurality of flow dividers 21. Optimize fluid flow path: reduce flow resistance: By setting the flow guide opening 23 on the side of the movable part 11 near the second end 112, and by having a larger radial dimension of the flow channel 123 on this side, the fluid flows out from the plurality of flow dividers 21 and enters this larger-sized flow channel 123 region, where the fluid velocity decreases, thereby reducing the fluid flow resistance. This helps to improve fluid transport efficiency and reduce energy consumption. For example, in long-distance fluid transport systems, this design can reduce pumping pressure and save energy costs. Smooth Fluid Transition: By arranging multiple diverting orifices 21 and guiding openings 23 axially opposite each other along the moving part 11, and ensuring that the size of the flow channel 123 corresponding to the guiding opening 23 is larger than the size of the flow channel 123 corresponding to the diverting orifice 21, the fluid can be smoothly guided from the diverting orifice 21 to the guiding opening 23, reducing turbulence and vortex generation during the flow process. Turbulence and vortex can lead to fluid energy loss, pressure fluctuations, and increased wear on the device. This design makes the fluid flow smoother, improving the stability and reliability of the system. Facilitates Flow Control and Adjustment: Precise Flow Control: The arrangement of flow channels 123 and diverting orifices 21 of different sizes allows for precise control of the fluid flow rate. By adjusting the position of the orifice plate body 2, diverting orifices 21 of different diameters can be connected to the flow channels 123, allowing for adjustment of the fluid flow rate according to actual needs. The larger guiding opening 23 provides a relatively stable outlet area for the fluid, making flow control more accurate. For example, in chemical production processes, precise control of the flow rate of various raw materials is required; this design can meet the requirements of high-precision flow control. Adapting to Different Operating Conditions: Different operating conditions may require different flow rates and pressures. By adjusting the diameter of the diversion orifice 21 and the size of the guide opening 23, various operating conditions can be flexibly adapted. For example, during startup, a smaller diameter diversion orifice 21 can be selected to limit the flow rate and avoid excessive impact on the system; during normal operation, the size of the diversion orifice 21 can be adjusted according to actual needs to meet different flow requirements. Improving Device Safety and Stability: Reducing Pressure Peaks: The larger size guide opening 23 can act as a buffer, reducing the pressure peaks generated when the fluid passes through the diversion orifice 21. When the fluid enters the larger size guide opening 23 from the smaller diameter diversion orifice 21, the pressure is released to a certain extent, reducing the pressure impact on the internal components of the device. This helps improve the safety and stability of the device and extends its service life.Uniform pressure distribution: By properly setting the positions of the diversion orifice 21 and the guide opening 23, as well as the dimensions of the flow channel 123, the pressure distribution of the fluid inside the device can be made more uniform. This helps to reduce situations where the local pressure is too high or too low, and avoids device deformation or damage caused by uneven pressure.

[0044] Please see Figures 2 to 7Furthermore, in an optional embodiment, the orifice plate body 2 is at least partially spherical, capable of contacting the first seal 3, the second seal 4, the chamfered annular surface 122, and the rounded annular surface 124. The spherical shape of the orifice plate body 2 enables multi-angle sealing: the spherical orifice plate body 2 forms multiple contact points and sealing areas with the first seal 3, the second seal 4, the chamfered annular surface 122, and the rounded annular surface 124. This multi-angle sealing structure can more effectively prevent fluid leakage and improve the sealing performance of the device. Tight fit: The sphere can better fit with each sealing surface and connecting surface, reducing sealing gaps. Whether it is the annular contact of the first seal 3 and the second seal 4, or the contact with the chamfered annular surface 122 and the rounded annular surface 124, the curved surface characteristics of the sphere can be used to achieve a tighter fit, thereby enhancing the sealing effect. Optimized fluid flow: Reduced turbulence: The smooth transition between the sphere and each connecting surface can reduce the generation of turbulence during fluid flow. The design of the chamfered toroidal surface 122 and the rounded toroidal surface 124 makes the fluid flow more smoothly into and out of the area surrounding the orifice plate body 2, reducing sudden changes in fluid direction and local velocity variations, thereby reducing the possibility of turbulence. Stable flow direction: The cooperation between the sphere and the seals and connecting surfaces helps guide the fluid to flow along a predetermined path. For example, the fluid enters the movable cavity 117 surrounding the sphere from the flow channel 123 of the guide section 12 and then flows out through a specific diversion hole 21. This stable flow direction helps improve the accuracy of flow control. Improved structural stability: Uniform force distribution: When the sphere rolls within the movable cavity 117, the interaction with various contact points and connecting surfaces allows for a more uniform distribution of force. The contact between the first seal 3 and the second seal 4 and the sphere, as well as their contact with the chamfered toroidal surface 122 and the rounded toroidal surface 124, can support and restrict the sphere in different directions, reducing unstable movement of the sphere under fluid pressure and improving the overall structural stability of the device. Buffering effect: The contact between the chamfered toroidal surface 122 and the rounded toroidal surface 124 and the sphere provides a certain buffering effect. Pressure fluctuations and vibrations generated during fluid flow can be alleviated through the contact between these curved surfaces and the sphere, reducing the impact on the internal structure of the device and extending its service life. Easy operation and maintenance: Flexible rolling: The shape of the sphere allows the orifice plate body 2 to roll more flexibly within the movable cavity 117. This flexibility facilitates the position adjustment of the orifice plate body 2 via an external drive device to achieve switching between different flow branches 21 and the flow channel 123. During operation, the fit between the sphere and the various seals and connecting surfaces does not hinder the rolling of the orifice plate body 2, improving the operability of the device. Easy maintenance: When maintenance is required, the fit between the sphere and various components is relatively simple, making it easy to disassemble and install seals. Simultaneously, due to the good fit between the sphere and the sealing and connecting surfaces, the sealing performance can be more easily checked during maintenance, ensuring the device can operate normally after reinstallation.

[0045] Please see Figure 10 In an optional embodiment, the orifice plate body 2 is at least partially spherical, and the flow guide opening 23 is a vertical opening radially arranged along the movable part 11. In other words, the orifice plate body 2 is a spherical structure formed by cutting off the spherical cap from a sphere. A flow guide cavity 24 is provided through the interior of the sphere, and the flow guide cavity 24 includes a cylindrical cavity 241 and a spherical cap cavity 242 arranged opposite to the flow guide opening 23. The flow guide opening 23 is partially connected to the cylindrical cavity 241, and the diversion hole 21 is partially connected to the spherical cap. Fluid enters the spherical cap portion from the diversion hole 21, then enters the cylindrical cavity 241 portion, and finally flows out through the flow guide opening 23. Optimized fluid flow path: smooth transition: The spherical cap cavity 242 can better receive the fluid from the diversion hole 21, and its shape is conducive to fluid convergence and initial guidance. When the fluid enters the spherical cap cavity 242 from the diversion hole 21, the spherical cap shape can reduce the impact and turbulence of the fluid, allowing the fluid to enter the next stage more smoothly. Efficient Flow Guidance: The cylindrical cavity 241 provides a relatively regular flow channel for the fluid. After entering the cylindrical cavity 241 from the spherical cap cavity 242, the fluid can flow in a relatively stable environment, reducing local resistance and energy loss caused by irregular shapes. The flow guiding opening 23 is located on the cylindrical cavity 241, allowing the fluid to flow out smoothly and improving the fluid delivery efficiency. Improved Flow Control Accuracy: Precise Distribution: By setting the flow dividing orifice 21 in the spherical cap cavity 242, the shape characteristics of the spherical cap can be used to initially distribute the fluid. Flow dividing orifices 21 at different positions can control the inflow and direction of the fluid as needed, achieving more precise flow regulation. Stable Output: The relatively regular shape of the cylindrical cavity 241, combined with the flow guiding opening 23, allows the fluid to have a more stable flow velocity and flow rate when flowing out. This helps to improve the accuracy of flow control and meet the requirements for precise control of fluid flow. Enhanced Structural Stability: Reasonable Stress Distribution: The structural design of dividing the flow guiding cavity 24 into a cylindrical cavity 241 and a spherical cap cavity 242 allows for a more reasonable stress distribution in the orifice plate body 2 under fluid pressure. The combination of the spherical cap cavity 242 and the cylindrical cavity 241 effectively disperses stress, reduces local stress concentration, and improves the structural strength and stability of the orifice plate body 2. Adaptability to Different Working Conditions: This structure better adapts to different fluid pressure and flow conditions. Under high pressure or high flow conditions, the spherical cap cavity 242 acts as a buffer and distributes the fluid, while the cylindrical cavity 241 ensures stable fluid output. Under various working conditions, the orifice plate body 2 maintains good performance and reliability.

[0046] Please see Figures 2 to 7 In some embodiments, the perforated plate body 2 is used to be driven along a first direction (e.g., Figures 4 to 7 The multiple diversion holes 21 roll along the first direction (e.g., in the R direction) and roll along the first direction (e.g., in the R direction). Figure 10The orifice plate body 21 is spaced in the R direction as shown in (a). This improves flow switching efficiency: when the orifice plate body 2 is driven to roll along the first direction, the flow diverting holes 21 are spaced along the first direction, and as the orifice plate body 2 rolls, different flow diverting holes 21 can quickly and sequentially connect with the flow channel 123. This arrangement makes flow switching faster and can respond promptly to the system's demand for different flow rates. For example, in industrial production processes that require frequent flow rate adjustments, production efficiency can be greatly improved. Enhanced structural stability: when the orifice plate body 2 rolls, the arrangement direction of the flow diverting holes 21 is consistent with the rolling direction, which makes the force of the fluid on the orifice plate body 2 more evenly distributed in the rolling direction. This helps to reduce the vibration or instability of the orifice plate body 2 caused by uneven fluid force, and improves the overall structural stability of the device. This arrangement can also reduce the lateral force on the orifice plate body 2 during rolling, reduce the wear of the seal between the orifice plate body 2 and the inner wall of the moving cavity 117, extend the service life of the seal, and further improve the reliability of the device.

[0047] In an optional implementation, the number of diversion holes 21 may be two, three, four, etc.

[0048] Please see Figures 4 to 7 Preferably, the number of diversion holes 21 is three, and the diameter of the diversion holes 21 along the first direction can be increased or decreased one by one. Figures 4 to 7 The diameter of each branch orifice 21 connected to the flow channel 123 gradually decreases. Thus, during the rolling of the orifice plate body 2 in the first direction, the diameter of the branch orifice 21 can change in a gradient, thereby enabling gradient control of flow rate changes, achieving smooth flow rate changes, and avoiding abrupt changes in flow rate. Precise adjustment: The gradient orifice diameter makes flow control more precise. Operators can fine-tune the flow rate by selecting the appropriate branch orifice 21 through precise rolling of the orifice plate body 2 according to actual needs. This is particularly important in situations requiring high-precision flow control, such as laboratory experiments and precision instruments. It can better meet specific experimental conditions or process requirements, improving the accuracy of flow control. Reduced pressure fluctuations: Sudden increases or decreases in flow rate often lead to drastic fluctuations in system pressure. Gradient control of flow rate changes can effectively reduce such pressure fluctuations, lowering the risk of system damage due to sudden pressure changes. For example, in pipeline transportation systems, pressure fluctuations may cause problems such as pipe rupture and loose joints; this setting can improve the safety and reliability of the system. Operators can more easily grasp and predict flow rate trends when adjusting the flow rate. Because the diameter of the diversion orifice 21 varies in a gradient, the flow rate variation can be roughly determined based on the direction and distance of the rolling, making flow rate adjustment more convenient. This improves operational convenience and efficiency, and reduces the possibility of operational errors.

[0049] Please see Figure 8 In some embodiments, the movable part 11 is provided with an operating hole 116 communicating with the movable cavity 117. Please refer to [link to relevant documentation]. Figure 10 The orifice plate body 2 is equipped with an operating structure 22. Both the operating hole 116 and the operating structure 22 are located between two first parts 113. The operating structure 22 is exposed within the operating hole 116 and is driven to move the orifice plate body 2. High space utilization: By placing the operating hole 116 between the two first parts 113 and the operating structure 22 between the two first seals 3, the internal space of the moving part 11 is fully utilized. This layout makes the entire device more compact, reduces space occupation, and facilitates installation and use in limited installation space. Reduced external interference: The two first parts 113 and the two first seals 3 can protect the operating structure 22 to a certain extent, preventing dust, impurities, etc., from entering the orifice plate body 2 and affecting fluid flow. By setting the operating hole 116 and the operating structure 22, the operator can directly drive the orifice plate body 2 from the outside. The position of the orifice plate body 2 can be easily adjusted without disassembling the entire device, achieving control of fluid flow.

[0050] In an optional embodiment, the operating structure 22 can be a manual knob, lever, etc. The operating structure 22 can be driven to rotate by a handwheel, wrench, rotary motor, rotary cylinder, etc.

[0051] Please see Figure 10 In an optional embodiment, the operating structure 22 can be a groove recessed in the orifice plate body 2. A torque can be applied to the groove to drive it to rotate the orifice plate body 2.

[0052] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0053] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0055] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A rotary orifice plate flow device, characterized in that, include: A flow guiding body, wherein the flow guiding body is provided with a flow channel and a movable cavity communicating with the flow channel; as well as The orifice plate body is movably disposed within the movable cavity. The orifice plate body is provided with multiple flow-diverting holes of different diameters. The orifice plate body is driven to move within the movable cavity so that one of the flow-diverting holes communicates with the flow channel.

2. The rotary orifice plate flow device according to claim 1, characterized in that, The flow guiding body includes a movable part and a flow guiding part that are connected to each other. The movable part includes a first end and a second end that are opposite to each other along its own axis. The flow guiding part is disposed at the first end and the second end. The movable part protrudes from the outer wall of the flow guiding part. The movable part is provided with the movable cavity. The flow guiding part is provided with the flow channel. The orifice plate body is housed in the movable part and can movably abut against the inner wall of the movable part and the inner wall of the flow guiding part.

3. The rotary orifice plate flow device according to claim 2, characterized in that, The movable part includes a first part and a second part that are bent and connected. The first part protrudes from the outer wall of the flow guide and extends in a direction away from the flow guide along the radial direction of the flow guide. The second part is circumferentially disposed around the outer periphery of the flow guide. The first part is disposed at the first end and the second end of the second part. The second part and the first part are bent and connected to form a first receiving step disposed in the movable cavity. The rotating orifice plate flow device also includes a first sealing element, which is circumferentially disposed on the first receiving step and abuts against the orifice plate body.

4. The rotary orifice plate flow device according to claim 3, characterized in that, The movable part is provided with an operating hole that communicates with the movable cavity. The orifice plate body is provided with an operating structure. The operating hole and the operating structure are both located between the two first parts. The operating structure is exposed in the operating hole and is used to be driven to make the orifice plate body move.

5. The rotary orifice plate flow device according to claim 2, characterized in that, The inner wall of the flow guide is recessed along its own axis at the first end near the movable part, and the rotating orifice plate flow device also includes a second sealing element, which is circumferentially disposed on the second receiving step and abuts against the orifice plate body.

6. The rotary orifice plate flow device according to claim 5, characterized in that, The second receiving step is connected to the first end of the movable part at an inverted angle ring surface.

7. The rotary orifice plate flow device according to claim 5, characterized in that, The flow guide and the second end of the movable part are connected by a rounded toroidal surface.

8. The rotary orifice plate flow device according to claim 2, characterized in that, The radial dimension d1 of the flow channel of the guide portion at the first end is smaller than the radial dimension d2 of the flow channel of the guide portion at the second end.

9. The rotary orifice plate flow device according to any one of claims 1 to 8, characterized in that, The orifice plate body is at least partially spherical, and the orifice plate body is rotatably disposed within the movable cavity. The orifice plate body is provided with a guide opening that communicates with a plurality of the diversion holes. The orifice plate body is driven to roll within the movable cavity, such that one of the diversion holes and the guide opening are both in communication with the flow channel.

10. The rotary orifice plate flow device according to claim 9, characterized in that, The orifice plate body is driven to roll along a first direction, and a plurality of diversion holes are spaced apart along the first direction, with the diameter of the plurality of diversion holes increasing sequentially along the first direction.

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