Rotary orifice plate flow device

Abstract

The invention relates to the technical field of flow regulation, in particular to a rotary orifice plate flow device which comprises a flow guide body and an orifice plate body, and the flow guide body is provided with a flow channel and a movable cavity communicating 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] The present application relates to the technical field of flow regulation, and in particular to a rotating orifice plate flow device. Background Art

[0002] In fluid design, it is often necessary to add orifice plates to limit flow and reduce pressure. When conditions or working conditions change, it is necessary to replace orifice plates with different apertures. Replacing orifice plates requires disassembling pipes or equipment. Some special equipment needs to be completely cooled or depressurized before disassembly, making the process of replacing orifice plates cumbersome and time-consuming. Summary of the invention

[0003] Based on this, it is necessary to provide a rotating orifice plate flow device to address the current problem of cumbersome and time-consuming replacement of orifice plates with different apertures.

[0004] A rotating orifice flow device, comprising:

[0005] A flow guiding body, wherein the flow guiding body is provided with a flow channel and an active cavity communicating with the flow channel; and

[0006] An orifice plate body, wherein the orifice plate body is movably disposed in the movable cavity, and a plurality of diversion holes with different apertures are penetrated through the orifice plate body, and the orifice plate body is used to be driven to move in the movable cavity so that one of the diversion holes is connected to the flow channel.

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

[0008] In one embodiment, the movable portion includes a first part and a second part that are bent and connected, the first part is protruding from the outer wall of the guide portion and extends in the radial direction of the guide portion in a direction away from the guide portion, the second part is annularly arranged on the outer periphery of the guide portion, the first part is arranged 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 accommodating step provided in the movable cavity, and the rotating orifice flow device also includes a first sealing member, the first sealing member is annularly arranged on the first accommodating step and abuts against the orifice body.

[0009] In one embodiment, the movable portion is penetrated by an operating hole connected to 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 the operating structure is used to be driven to make the orifice plate body move.

[0010] In one embodiment, the inner wall of the guide portion is axially recessed with a second accommodation step near the first end of the movable portion, and the rotating orifice flow device also includes a second seal, which is annularly arranged on the second accommodation step and abuts against the orifice body.

[0011] In one embodiment, the second accommodating step is connected to the first end of the movable portion in a chamfered annular surface.

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

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

[0014] In one embodiment, the orifice plate body is at least partially spherical, and the orifice plate body is rolled in the active cavity. The orifice plate body is penetrated by a guide opening connected to a plurality of the diversion holes, and the orifice plate body is used to be driven to roll in the active cavity, so that one of the diversion holes and the guide opening are connected to the flow channel.

[0015] In one of the embodiments, the orifice plate body is driven to roll along a first direction, the plurality of diversion holes are spaced apart along the first direction, and the apertures of the plurality of diversion holes increase one by one along the first direction.

[0016] The above-mentioned rotating orifice plate flow device has high flexibility in adjusting the aperture, and there are multiple diversion holes with different apertures on the orifice plate body. By driving the orifice plate body to move in the active cavity, the diversion holes with different apertures can be easily connected to the flow channel, and the aperture adjustment can be quickly achieved without spending a lot of time to replace the orifice plate. Since the aperture can be quickly adjusted by driving the orifice plate body to move in the active cavity without disassembling the pipeline and equipment, the device can respond to changes in working conditions in a timely and real-time manner. When the working conditions change, different apertures can be adjusted to limit flow and reduce pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application, and ordinary technicians in this field can obtain other drawings based on the disclosed drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of a rotating orifice flow device provided in an embodiment of the present application.

[0019] Figure 2 (a) is a top view of a rotating orifice plate flow device provided in an embodiment of the present application, which is rotated to connect the first diversion hole 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 the present application, which is rotated until the first diversion hole is connected to 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 the present application, which is rotated to connect the second diversion hole 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 the present application, which is rotated to connect the second diversion hole 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 the present application, which is rotated to a point where the third flow diversion hole is connected to 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 the present application, which is rotated to connect the third diversion hole with the flow channel, and (b) is a cross-sectional view along the FF direction in (a).

[0025] Figure 8 A schematic diagram of the assembly of the guide body, the first seal and the second seal provided in an embodiment of the present application.

[0026] Fig. 9(a) is a cross-sectional view of the guide body provided in an embodiment of the present application at a first viewing angle; (b) is a cross-sectional view of the guide body provided in an embodiment of the present application at a second viewing angle; and (c) is a cross-sectional view of the guide body provided in an embodiment of the present application at a third viewing angle.

[0027] Fig.10 (a) is a schematic diagram of the structure of the orifice plate body provided in an embodiment of the present application at a first viewing angle; (b) is a schematic diagram of the structure of the orifice plate body provided in an embodiment of the present application at a second viewing angle; (c) is a schematic diagram of the structure of the orifice plate body provided in an embodiment of the present application at a third viewing angle.

[0028] Explanation of the reference numerals: 100, rotating orifice flow device; 1, flow guide body; 11, movable part; 111, first end; 112, second end; 113, first part; 114, second part; 115, first accommodating step; 116, operating hole; 117, movable cavity; 12, flow guide part; 121, second accommodating step; 122, chamfered annular surface; 123, flow channel; 124, chamfered annular surface; 2, orifice body; 21, diverter hole; 22, operating structure; 23, flow guide opening; 24, flow guide cavity; 241, cylindrical cavity; 242, spherical cap cavity; 3, first sealing member; 4, second sealing member. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] See also Figure 1 The embodiment of the present application provides a rotating orifice plate flow device 100, comprising a flow guide body 1 and an orifice plate body 2. The rotating orifice plate flow device 100 can replace the diversion holes 21 with different apertures.

[0031] See also Figures 2 to 7 , Figure 2 and Figure 3 It is a schematic diagram of the structure of the rotating orifice flow device 100 under the first aperture. Figure 4 and Figure 5 It is a schematic diagram of the structure of the rotating orifice plate flow device 100 under the second pore size. Figure 6 and Figure 7It is a schematic diagram of the structure of the rotating orifice flow device 100 under the third aperture. The flow guide body 1 is provided with a flow channel 123 and an active cavity 117 connected to the flow channel 123; the orifice body 2 can be movably arranged in the active cavity 117, and the orifice body 2 is penetrated by a plurality of diverter holes 21 with different apertures, and the orifice body 2 is used to be driven to move in the active cavity 117 so that one of the diverter holes 21 is connected to the flow channel 123. The rotating orifice flow device 100 provided in the embodiment of the present application has high flexibility in aperture adjustment, and the orifice body 2 is provided with a plurality of diverter holes 21 with different apertures. By driving the orifice body 2 to move in the active cavity 117, the diverter holes 21 with different apertures can be easily connected to the flow channel 123, and the aperture adjustment can be realized quickly without spending a lot of time to replace the orifice plate. Since the aperture can be quickly adjusted by driving the orifice plate body 2 to move in the active chamber 117 without disassembling the pipeline and equipment, the device can respond to changes in operating conditions in real time. When the operating conditions change, different apertures can be adjusted to limit flow and reduce pressure.

[0032] In addition, the rotating orifice plate flow device 100 provided in the embodiment of the present application has a compact structure, high integration, high reliability and is easy to control automatically. The flow guide body 1 of the device integrates the flow channel 123 and the active cavity 117 connected to the flow channel 123, and the orifice plate body 2 can be movably arranged in the active cavity 117. This compact and non-dispersed structural design makes the installation of the entire device in the pipeline system more convenient, without the need for additional connecting parts or a larger installation space. Since the orifice plate body 2 is active in the active cavity 117 to select a suitable diverter hole 21 to be connected to the flow channel 123, this relatively closed structure can reduce the interference of external factors on the orifice plate, and can reduce the normal rotation and aperture selection function of the orifice plate affected by the entry of impurities such as dust and pebbles, thereby improving the reliability and service life of the device. The orifice plate body 2 is used to be driven to move in the active cavity 117, and this design is convenient for combination with an automatic control system. The rotation angle of the orifice plate body 2 can be accurately controlled by a driving device such as a motor, so as to accurately select the required diverter hole 21.

[0033] See also Figure 8 In some embodiments, the flow guide body 1 includes a movable portion 11 and a flow guide portion 12 that are connected to each other. The movable portion 11 includes a first end 111 and a second end 112 that are opposite to each other along its own axial direction. The flow guide portion 12 is provided at the first end 111 and the second end 112. The movable portion 11 is protruded from the outer wall of the flow guide portion 12. The movable portion 11 is provided with an active cavity 117. The flow guide portion 12 is provided with a flow channel 123. Please refer to Figures 2 to 7, the orifice plate body 2 is accommodated in the movable part 11 and can be movably abutted against the inner wall of the movable part 11 and the inner wall of the guide part 12. It can be understood that the movable part 11 is convexly arranged on the outer wall of the guide part 12, which means that the movable part 11 is outwardly protruding from the outer wall of the guide part 12 in terms of spatial position. The movable part 11 is convexly arranged on the outer wall of the guide part 12, which provides a convenient installation space for the driving mechanism that drives the orifice plate body 2 to move. The convex movable part 11 can more easily install the driving component to drive the orifice plate body 2 to rotate. Because there is enough external space, it is not necessary to arrange the driving component inside the narrow guide part 12 or close to the outer wall of the guide part 12, which makes the installation, debugging and maintenance of the driving mechanism easier. When the fluid flows in the flow channel 123 of the guide part 12, the movable part 11 is convexly arranged on the outer wall, which can make the movable part 11 and the internal orifice plate body 2 avoid the direct impact of the fluid to a certain extent, and can guide the fluid to enter the movable part 11 more smoothly from the flow channel 123 of the guide part 12. If the movable portion 11 and the flow guide portion 12 are in the same plane or the movable portion 11 is recessed inside the flow guide portion 12, the fluid pressure change in the flow channel 123 or the high-speed flow of the fluid may cause a greater interference to the movement of the orifice plate body 2. The protruding movable portion 11 can better disperse the pressure from the outside. For example, when the abnormal pressure in the pipeline system fluctuates, the movable portion 11 protruding from the outer wall of the flow guide portion 12 can better disperse the pressure between the flow guide portion 12 and the movable portion 11, rather than concentrating it in a certain local area, thereby enhancing the structural strength and stability of the entire flow guide body 1.

[0034] The orifice plate body 2 is driven to make one of the diverter holes 21 communicate with the flow channel 123. In other words, the diverter hole 21 communicates with the flow channels 123 of the two guide parts 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] See also Fig. 9 In (a), (b) and (c), in some embodiments, the movable portion 11 includes a first portion 113 and a second portion 114 that are bent and connected. The first portion 113 is convexly disposed on the outer wall of the guide portion 12 and extends in a radial direction of the guide portion 12 in a direction away from the guide portion 12. The second portion 114 is annularly disposed on 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 accommodating step 115 disposed in the movable cavity 117. See Figure 8, the rotating orifice flow device 100 also includes a first seal 3, which is annularly arranged on the first accommodating step 115 and abuts against the orifice body 2. The first seal 3 is provided to prevent fluid leakage: in the rotating orifice flow device 100, the fluid flows in the flow channel 123 of the guide body 1. The first seal 3 can effectively prevent the fluid from leaking out from the gap between the movable part 11 and the orifice body 2. If there is no first seal 3, the fluid may bypass the orifice body 2, resulting in inaccurate flow measurement and inability to perform normal flow limiting and pressure reduction operations. Ensure the normal operation of the rotating orifice flow device 100: Good sealing can ensure that the pressure environment inside the rotating orifice flow device 100 is stable. If a leak occurs, the pressure inside the rotating orifice flow device 100 will fluctuate, which will affect the normal activity of the orifice body 2, such as causing the orifice body 2 to be unable to accurately switch the diversion hole 21 to communicate with the flow channel 123. Improve the accuracy of the rotating orifice flow device 100: By preventing leakage, the first seal 3 can make the fluid pass through the diverter hole 21 of the orifice body 2, thereby ensuring the accuracy of flow measurement and control. The first accommodating step 115 provides a stable installation position for the first seal 3. Since the first accommodating 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 is installed in this position and will not be easily displaced, and can always remain in a suitable position to play a sealing role. The first accommodating step 115 surrounds the active cavity 117. When the first seal 3 is annularly arranged on the first accommodating step 115, it can form a good circumferential seal with the orifice body 2. This circumferential sealing method can effectively cover the annular gap between the active cavity 117 and the orifice 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 seal 3 is arranged around the first accommodating step 115 and abuts against the orifice plate body 2, it can assist in fixing the position of the orifice plate body 2 to a certain extent. The first seal 3 itself has a certain elasticity and thickness, which can fill the small gap that may exist between the orifice plate body 2 and the first accommodating step 115, so that the position of the orifice plate body 2 in the active cavity 117 is more stable. This helps to maintain its axial and radial stability during the operation of the device, especially when the orifice plate body 2 rotates to switch the diverter hole 21, and ensure that the diverter hole 21 and the flow channel 123 can be accurately connected. Buffering and shock absorbing effect: During the flow of fluid, vibrations and pressure fluctuations may occur. The first seal 3 can play a role in buffering and shock absorbing, reducing the impact of these vibrations and pressure fluctuations on the orifice plate body 2. For example, when the fluid flow rate in the pipeline changes suddenly, an impact force will be generated, and this impact force may cause the orifice plate body 2 to vibrate.The first seal 3 can absorb part of the impact force, protect the orifice plate body 2 and other internal components, and extend the service life of the device. Uniform pressure distribution: The first seal 3 arranged in an annular manner on the first receiving step 115 can make the pressure distribution on the orifice plate body 2 more uniform. When the fluid flows through the orifice plate body 2, pressure will be generated on the orifice plate body 2. Since the first seal 3 surrounds the first receiving step 15, the pressure can be transferred to the periphery of the orifice plate body 2 more evenly, avoiding deformation or damage of the orifice plate body 2 caused by excessive local pressure. This is very important 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. Setting the first seal 3 here can make full use of the internal space of the device and make the device structure more compact.

[0036] See also Figure 8 In some embodiments, the inner wall of the guide portion 12 is concavely provided with a second accommodation step 121 along its own axial direction near the first end 111 of the movable portion 11, and the rotating orifice plate flow device 100 further includes a second seal 4, which is arranged on the second accommodation step 121 and abuts against the orifice plate body 2. In the rotating orifice plate flow device 100, the first seal 3 is provided to prevent the fluid from leaking from one side of the movable portion 11, and the second seal 4 is provided on the inner wall of the guide portion 12 near the first end 111 of the movable portion 11, so that a two-way seal is formed. This can greatly reduce 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 processing high-pressure and high-viscosity fluids, this two-way sealing structure can ensure that the fluid can only pass through the diverter hole 21 of the orifice plate body 2, thereby ensuring the accuracy of flow control. Guiding the flow direction of the fluid: The second seal 4 is arranged on the second accommodation step 121 on the inner wall of the guide portion 12, which helps to guide the fluid to flow along a predetermined path when it is close to the orifice plate body 2. After encountering the second seal 4, the fluid will tend to pass through the diverter hole 21 of the orifice plate body 2 rather than leak from other possible gaps. This can make the flow of the fluid more orderly, reduce the generation of turbulence, and improve the accuracy of the device's control of fluid flow and pressure. Reduce local pressure changes: When the fluid is guided by the second seal 4 to pass through the diverter 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 disposed at the first end 111 and the second end 112 of the second part 114, two first accommodating steps 115 are formed between the first part 113 and the second part 114. The first sealing member 3 in the embodiment of the present application includes two, and the two first sealing members 3 are disposed on the first accommodating steps 115 corresponding to each other. It can be understood that the 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, passes through the diverter hole 21 of the orifice plate body 2, and then passes out from the flow channel 123 of the guide part 12 located at the second end 112 of the movable part 11. In this way, the sealing of the inlet and the outlet can be achieved: when the 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 member 3 and the second sealing member 4 near the first end 111 can prevent the fluid from leaking at the inlet. Similarly, when the fluid flows out from the diverter hole 21 of the orifice body 2, it flows out through the flow channel 123 of the guide part 12 located at the second end 112 of the movable part 11, and the first seal 3 near the second end 112 can prevent the fluid from leaking at the outlet. Adapting to fluid pressure changes: During the fluid flow process, the pressure conditions at the inlet and outlet may be different. On the inlet side, the fluid pressure pushes the fluid into the orifice body 2; on the outlet side, the pressure changes after the fluid passes through the diverter hole 21. The two first seals 3 can adapt to the pressure changes at their respective positions and better cope with this pressure difference. Accurate flow path control: By sealing at the fluid inlet and outlet positions, it can ensure that all fluids pass through the diverter hole 21 of the orifice body 2. This is very important for accurately measuring and controlling the flow rate. If leakage occurs at the inlet or outlet, the actual amount of fluid passing through the diverter hole 21 will not match the measured value, resulting in deviations in flow control. Stable fluid flow state: The presence of the two first seals 3 helps to maintain a stable flow state of the fluid around the orifice body 2. They can reduce turbulence and backflow of the fluid during the inflow and outflow process. When the fluid stably passes through the diverter hole 21, the flow rate can be more accurately calculated and controlled according to the aperture of the diverter hole 21, avoiding flow measurement errors caused by unstable fluid flow state.

[0038] Furthermore, the two first seals 3 are both arranged on the first accommodating step 115, which can be closely combined with the fluid path: the fluid enters from the flow channel 123 of the guide part 12 at the first end 111 of the movable part 11, passes through the orifice plate body 2, and then flows out from the flow channel 123 of the guide part 12 at the second end 112 of the movable part 11. The first accommodating step 115 is located at the key position of the fluid in and out, and the seal can directly act on the path where the fluid may leak, forming an effective sealing defense line to ensure that the fluid flows according to the predetermined channel. Stable sealing based on the step structure: The first accommodating step 115 provides a stable installation base for the seal. The step structure enables the seal to fit better in the corresponding position and form a close contact with the inner wall of the orifice plate body 2 and the guide part 12 and the movable part 11. Compared with setting the seal on other planes or irregular positions, this step-based installation method can provide a more reliable sealing effect, because it can better resist the impact of fluid pressure on the seal and reduce the possibility of displacement or deformation of the seal. Collaborative sealing effect: The two seals can work together on the first accommodating step 115. The two first seals 3 are mainly for the sealing between the movable part 11 and the orifice plate body 2. They cooperate with each other to more accurately control the flow path of the fluid, reduce the risk of leakage, and thus improve the sealing efficiency of the entire device. Accurately control the flow measurement area, and accurately define the area where the fluid passes through the diverter hole 21 of the orifice plate body 2. In this way, the fluid flow can be measured and controlled more accurately, because only the fluid passing through the diverter hole 21 will be included in the flow calculation, avoiding the flow measurement error caused by leakage. Centralized installation position: The first seals 3 are all set on the first accommodating step 115, so that the installation position of the seal is relatively concentrated. During the installation process, the staff can more conveniently operate the two first seals 3 at the same time, reducing the installation time and workload. Moreover, this centralized position facilitates the unified inspection and maintenance of the seals. For example, when the equipment is regularly maintained, the maintenance personnel can more easily find the location of the seal, check the wear of the seal or replace it.

[0039] See also Figure 8 and Fig. 9In some embodiments, the second accommodating step 121 is connected to the first end 111 of the movable part 11 by a chamfered beveled annular surface 122. Such a setting can reduce fluid resistance: the chamfered beveled annular surface 122 connection can make the fluid flow more smoothly. Compared with the right-angle connection, the chamfered angle can reduce the sudden turn and turbulence during the fluid flow. This helps to reduce the flow resistance of the fluid in the device, improve the fluid transportation efficiency, and reduce energy loss. Enhance structural stability: The chamfered beveled annular surface 122 connection has a certain transitional structure and can disperse stress. When the device is subjected to fluid pressure or external mechanical force during operation, this connection method can better withstand these forces and reduce the possibility of stress concentration at the connection. In contrast, right-angle connections are prone to stress concentration at corners, and long-term use may cause structural damage. For example, in a high-pressure fluid system, the chamfered beveled annular surface 122 connection can improve the safety and reliability of the device and extend its service life. Facilitates the installation of the seal and improves the sealing effect: For the seal set on the second accommodating step 121, the chamfered annular surface 122 connection can provide a better installation surface, so that the second seal 4 can fit more closely on this transition surface, increase the sealing contact area between the second seal 4 and the second accommodating step 121, and thus improve the sealing effect. Moreover, the shape of the chamfer makes it easier to position the seal during installation and reduces installation errors. Improve the uniformity of fluid flow: The chamfered annular surface 122 connection can make the flow of the fluid more uniform when entering the second accommodating step 121 area. This helps to avoid the situation where the local flow rate is too fast or too slow, and reduces the uneven impact of the fluid on the orifice plate body 2 and the seal. Uniform fluid flow can improve the stability and reliability of the device, and is also conducive to improving the accuracy of flow measurement. For example, in a flow metering device, stable fluid flow is essential for accurate flow measurement, and the chamfered annular surface 122 connection can provide better fluid conditions for accurate flow measurement.

[0040] See also Figure 8 and Fig. 9 In some embodiments, the guide portion 12 is connected to the second end 112 of the movable portion 11 by a chamfered annulus 124. This can reduce fluid resistance: the connection with the chamfered annulus 124 allows the fluid to transition more smoothly when flowing from the second end 112 of the movable portion 11 to the guide portion 12. Compared with a right-angle connection, this smooth transition reduces sudden turns during fluid flow, reduces local resistance and energy loss of the fluid. The chamfered annulus 124 enables the orifice plate body 2 to move more freely. At the same time, the sealing performance is improved: for parts that need to be sealed, the connection with the chamfered annulus 124 can provide a better mounting surface for the first seal 3. The first seal 3 can fit more closely on the smooth surface, increase the sealing contact area, and thus improve the sealing effect.

[0041] See also Fig. 9 In (c), in some embodiments, the radial dimension d1 of the flow channel 123 of the guide portion 12 disposed at the first end 111 is smaller than the radial dimension d2 of the flow channel 123 of the guide portion 12 disposed at the second end 112. This can achieve a fluid acceleration effect: when the fluid flows from the end (d1) with a smaller radial dimension to the end (d2) with a larger radial dimension, according to the principle of fluid continuity, the flow velocity of the fluid will decrease, and the pressure will increase accordingly. This increase in pressure can compensate for the energy loss of the fluid during the flow process to a certain extent and improve the fluid delivery efficiency. For example, in a long-distance fluid delivery pipeline system, by reasonably setting the size of the gradual flow channel 123, the pumping power demand can be reduced and the operating cost can be reduced. Reduce turbulence and energy loss: A smaller radial dimension inlet can make the fluid more stable when entering the device and reduce the generation of turbulence. As the fluid gradually flows to the area with a larger radial dimension, the flow space of the fluid increases, the flow velocity decreases, and the possibility of turbulence is further reduced. Turbulence will lead to increased energy loss of the fluid, pressure fluctuations, and increased wear on the internal components of the device. By setting the size of the flow channel 123, energy loss can be effectively reduced and the stability and reliability of the system can be improved. Reduce pressure shock: When the fluid suddenly enters or leaves the device, if the size of the flow channel 123 changes too dramatically, a large pressure shock may occur. By setting a gradual size of the flow channel 123, this pressure shock can be alleviated and the risk of damage to the internal components of the device can be reduced. For example, in some fluid systems that start and stop frequently, this design can increase the service life and safety of the device. Uniformly distribute stress: Flow channels 123 of different radial sizes can make the stress distribution inside the device more uniform. During the flow of fluid, the device will be affected by fluid pressure and external mechanical forces. By reasonably designing the size of the flow channel 123, the stress can be more evenly distributed inside the device, reducing local stress concentration and improving the structural stability of the device.

[0042] See also Fig.10In some embodiments, the orifice plate body 2 is at least partially a sphere, and the orifice plate body 2 is arranged in the active cavity 117 for rolling. The orifice plate body 2 is provided with a diversion opening 23 connected with a plurality of diversion holes 21, and the orifice plate body 2 is used to be driven to roll in the active cavity 117, so that one of the diversion holes 21 and the diversion opening 23 are connected with the flow channel 123. The orifice plate body 2 is at least partially a sphere, and has all-round flexibility: the orifice plate body 2 as a sphere can achieve all-round rolling in the active cavity 117. Compared with the orifice plate body 2 of other shapes, the sphere has smaller rotation resistance in all directions, and can respond to the drive more quickly and accurately and adjust to the desired position. For example, under the working condition where the diversion holes 21 need to be frequently switched to adapt to different flow requirements, the spherical orifice plate body 2 can complete the adjustment more efficiently, thereby improving the response speed and adaptability of the system. The shape of the sphere enables the orifice plate body 2 to maintain a relatively stable contact state in the rolling process, no matter from which angle it contacts with the inner wall of the active cavity 117 and the inner wall of the diversion part 12. This helps to ensure the position accuracy of the orifice plate body 2 in the active cavity 117, so that the diverter hole 21 and the guide opening 23 can be more accurately connected to the flow channel 123, improving the accuracy of flow control. Uniform distribution of fluid force: When the fluid flows through the spherical orifice plate body 2, the force of the fluid on the orifice plate body 2 will be evenly distributed on the surface of the sphere. This uniform force distribution can reduce the deformation and vibration of the orifice plate body 2 under the action of the fluid, and improve the stability and reliability of the device. For example, in a high-pressure fluid system, the spherical orifice plate body 2 can better withstand the fluid pressure and reduce the risk of damage to the orifice plate body 2 due to uneven pressure. The uniform fluid force distribution can also make the orifice plate body 2 relatively less disturbed by the fluid when rolling to adjust the position. This helps to ensure the stability of the orifice plate body 2 during the rolling process, avoid position deviation due to fluid interference, and ensure the accurate connection between the diverter hole 21 and the flow channel 123. Reduce wear and energy loss: The rolling motion of the sphere has a lower friction coefficient than the sliding or rotating motion of the orifice plate body 2 of other shapes. This means that when the orifice plate body 2 is driven to roll in the active cavity 117, less wear is generated, which can extend the service life of the orifice plate body 2 and the device. For example, in a long-term operating fluid system, reducing wear can reduce maintenance costs and downtime. A low friction coefficient can also reduce energy loss. When the fluid flows through the orifice plate body 2, the energy loss caused by friction will reduce the efficiency of the system. The low friction characteristics of the spherical orifice plate body 2 help to improve the energy utilization of the fluid system and reduce operating costs. Compact structural design: The spherical-shaped orifice plate body 2 occupies a relatively small space in the active cavity 117, which can achieve a more compact device design. This is very beneficial for installation environments with limited space. For example, in miniaturized fluid control equipment or complex piping systems, the spherical orifice plate body 2 can achieve effective flow control functions without increasing excessive space requirements.

[0043] See also Fig.10In (b), in an optional embodiment, the guide opening 23 and the plurality of diverter holes 21 are arranged opposite to each other along the axial direction of the movable part 11. The plurality of diverter holes 21 are arranged on the side of the movable part 11 close to the first end 111, and the guide opening 23 is arranged on the side of the movable part 11 close to the second end 112. The radial dimension of the flow channel 123 of the guide part 12 corresponding to the guide opening 23 is greater than the radial dimension of the flow channel 123 of the guide part 12 corresponding to the plurality of diverter holes 21. Optimize the fluid flow path: Reduce flow resistance: The guide opening 23 is arranged on the side of the movable part 11 close to the second end 112, and the radial dimension of the flow channel 123 of the guide part 12 on this side is larger. After the fluid flows out of the plurality of diverter holes 21, it enters the area of ​​the flow channel 123 with a larger size, and the flow velocity of the fluid will be reduced, thereby reducing the flow resistance of the fluid. This helps to improve the fluid delivery efficiency and reduce energy consumption. For example, in a long-distance fluid delivery system, this design can reduce pumping pressure and save energy costs. Guiding the smooth transition of the fluid: By arranging a plurality of diverter holes 21 and the diverter openings 23 axially relative to each other along the movable part 11, and making the size of the flow channel 123 corresponding to the diverter openings 23 larger than the size of the flow channel 123 corresponding to the diverter hole 21, the fluid can be guided to smoothly transition from the diverter hole 21 to the diverter opening 23, reducing the generation of turbulence and vortexes in the flow process of the fluid. Turbulence and vortexes can cause fluid energy loss, pressure fluctuations, and increased wear on the device. This design can make the fluid flow more stable and improve the stability and reliability of the system. Convenient for flow control and regulation: Accurate control of flow: The setting of flow channels 123 and diverter holes 21 of different sizes can achieve accurate control of the fluid flow. By adjusting the position of the orifice plate body 2, the diverter holes 21 of different apertures are connected to the flow channel 123, and the flow size of the fluid can be adjusted according to actual needs. The larger-sized diverter openings 23 can provide a relatively stable outlet area for the fluid, making the flow control more accurate. For example, in the chemical production process, the flow of various raw materials needs to be accurately controlled, and this design can meet the requirements of high-precision flow control. Adapt to different working conditions: Under different working conditions, different flow rates and pressures may be required. By adjusting the aperture of the diverter hole 21 and the size of the diversion opening 23, various working conditions can be flexibly adapted. For example, during the startup phase, a diverter hole 21 with a smaller aperture can be selected to limit the flow to avoid excessive impact on the system; during the normal operation phase, the size of the diverter hole 21 can be adjusted according to actual needs to meet different flow requirements. Improve the safety and stability of the device: Reduce pressure peaks: The larger-sized diversion openings 23 can act as a buffer and reduce the pressure peak generated when the fluid passes through the diverter hole 21. When the fluid enters the larger-sized diversion opening 23 from the smaller-aperture diverter hole 21, the pressure will be released to a certain extent, reducing the pressure shock to the internal components of the device. This helps to improve the safety and stability of the device and extend the service life of the device.Evenly distribute pressure: By properly setting the positions of the diversion holes 21 and the guide openings 23 and the size of the flow channel 123, the pressure distribution of the fluid inside the device can be made more even. This helps to reduce the situation where the local pressure is too high or too low, and avoids deformation or damage to the device caused by uneven pressure.

[0044] See also Figures 2 to 7, further, in an optional embodiment, the orifice plate body 2 is at least partially a sphere, which can contact the first seal 3, the second seal 4, the chamfered annular surface 122, and the rounded annular surface 124. The orifice plate body 2 is a sphere, which can achieve 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 to reduce the sealing gap. Whether it is the annular abutment 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 closer fit, thereby enhancing the sealing effect. Optimize fluid flow: Reduce turbulence: The smooth transition between the sphere and each connecting surface can reduce the turbulence generated during the fluid flow process. The design of the chamfered annular surface 122 and the rounded annular surface 124 makes the fluid flow more smoothly when entering and flowing out of the area around the orifice body 2, reducing the sudden turn of the fluid and the local flow velocity change, thereby reducing the possibility of turbulence. Stable flow direction: The cooperation between the sphere, the seal and the connecting surface helps to guide the fluid to flow along a predetermined path. For example, the flow channel 123 of the guide part 12 enters the active cavity 117 around the sphere, and then flows out through a specific diversion hole 21. This stable flow direction is conducive to improving the accuracy of flow control. Improve structural stability: Uniform force: When the sphere rolls in the active cavity 117, the action with each contact point and connecting surface can make the force more evenly distributed. The abutment of the first seal 3 and the second seal 4 on the sphere and the contact with the chamfered annular surface 122 and the rounded annular surface 124 can support and restrict the sphere in different directions, reduce the unstable movement of the sphere under fluid pressure, and improve the overall structural stability of the device. Buffering effect: The contact between the chamfered annular surface 122 and the rounded annular surface 124 and the sphere can play a certain buffering role. The pressure fluctuations and vibrations generated during the flow of the fluid can be alleviated by the contact between these curved surfaces and the sphere, reducing the impact on the internal structure of the device and extending the service life of the device. Easy to operate and maintain: Flexible rolling: The shape of the sphere makes the orifice plate body 2 roll more flexibly in the active cavity 117. This flexibility facilitates the position adjustment of the orifice plate body 2 through an external drive device to achieve the connection switching between different diversion holes 21 and the flow channel 123. During operation, the cooperation between the sphere and each seal and connection surface will not hinder the rolling of the orifice plate body 2, thereby improving the operability of the device. Easy to maintain: When the device needs to be maintained, the cooperation structure between the sphere and each component is relatively simple, and it is easy to disassemble and install the seal. At the same time, due to the good fit between the sphere and the sealing surface and the connection surface, the sealing performance can be more easily checked during the maintenance process to ensure that the device can operate normally after reinstallation.

[0045] See also Fig.10 In an optional embodiment, the orifice plate body 2 is at least partially a sphere, and the diversion opening 23 is a vertical opening arranged radially 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 the sphere. A diversion cavity 24 is provided inside the sphere, and the diversion cavity 24 includes a cylindrical cavity 241 and a spherical cap cavity 242 arranged opposite to the diversion opening 23. The diversion opening 23 is partially connected to the cylindrical cavity 241, and the diversion hole 21 is partially connected to the spherical cap body. The fluid enters the spherical cap body part from the diversion hole 21, then enters the cylindrical cavity 241 part, and finally flows out through the diversion opening 23. Optimizing the 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 the convergence and preliminary guidance of the fluid. 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, so that the fluid enters the next stage more smoothly. Efficient diversion: 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 the local resistance and energy loss caused by the irregular shape. The diversion opening 23 is arranged on the cylindrical cavity 241, so that the fluid can flow out in a relatively smooth manner, thereby improving the fluid delivery efficiency. Improve the flow control accuracy: Precise distribution: By setting the diversion hole 21 in the spherical cap cavity 242, the shape characteristics of the spherical cap can be used to preliminarily distribute the fluid. The diversion holes 21 at different positions can control the inflow amount and direction of the fluid as needed to achieve more precise flow regulation. Stable output: The shape of the cylindrical cavity 241 is relatively regular, and its cooperation with the diversion opening 23 can make the fluid have a more stable flow rate and flow rate when it flows 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 guide cavity 24 into a cylindrical cavity 241 and a spherical cap cavity 242 can make the stress distribution of the orifice plate body 2 more reasonable when it is subjected to fluid pressure. The combination of the spherical cap cavity 242 and the cylindrical cavity 241 can effectively disperse stress, reduce local stress concentration, and improve the structural strength and stability of the orifice plate body 2. Adapt to different working conditions: This structure can better adapt to different fluid pressure and flow conditions. Under high pressure or high flow, the spherical cap cavity 242 can play a role in buffering and distributing the fluid, while the cylindrical cavity 241 can ensure the stable output of the fluid. Under different working conditions, the orifice plate body 2 can maintain good performance and reliability.

[0046] See also Figures 2 to 7 In some embodiments, the orifice plate body 2 is driven along a first direction (eg Figures 4 to 7 The plurality of diversion holes 21 roll along a first direction (such as Fig.10The orifice plate body 2 is arranged in the R direction as shown in (a). This can improve the flow switching efficiency: when the orifice plate body 2 is driven to roll along the first direction, since the diverter holes 21 are arranged in the first direction at intervals, as the orifice plate body 2 rolls, different diverter holes 21 can be quickly connected to the flow channel 123 in sequence. This arrangement makes the flow switching faster and can respond to the system's needs for different flow rates in a timely manner. For example, in industrial production processes that require frequent flow adjustments, production efficiency can be greatly improved. Enhanced structural stability: When the orifice plate body 2 rolls, the diverter holes 21 are arranged in the same direction as the rolling direction, which can make 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 improve 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 active cavity 117, extend the service life of the seal, and further improve the reliability of the device.

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

[0048] See also Figures 4 to 7 Preferably, the number of the diverter holes 21 is three, and the aperture sizes of the diverter holes 21 along the first direction can be increased or decreased one by one ( Figures 4 to 7 The aperture of a diverter hole 21 connected to the flow channel 123 in the orifice plate body 2 is gradually reduced). In this way, in the process of rolling the orifice plate body 2 along the first direction, the aperture of the diverter hole 21 can be changed in a gradient, so that the change of the flow rate can be controlled by gradient, a gentle flow change can be achieved, and a large change in the flow rate can be avoided. Accurate adjustment: The aperture with gradient change makes the flow control more accurate. The operator can select a suitable diverter hole 21 by finely rolling the orifice plate body 2 according to actual needs to achieve fine-tuning of the flow rate. This is particularly important in occasions where high-precision flow control is required, such as laboratory experiments, precision instruments and equipment, etc. It can better meet specific experimental conditions or process requirements and improve the accuracy of flow control. Reduce pressure fluctuations: Sudden increases or decreases in flow often lead to drastic fluctuations in system pressure. Gradient control of flow changes can effectively reduce such pressure fluctuations and reduce the risk of system damage due to sudden changes in pressure. For example, in a pipeline transportation system, pressure fluctuations may cause problems such as pipeline rupture and loose joints. This setting can improve the safety and reliability of the system. When adjusting the flow rate, it is easier for operators to grasp and predict the changing trend of the flow rate. Since the aperture of the diverter hole 21 changes in a gradient, they can roughly judge the change range of the flow rate according to the rolling direction and distance, so as to adjust the flow rate more conveniently. This improves the convenience and efficiency of operation and reduces the possibility of operating errors.

[0049] See also Figure 8 In some embodiments, the movable portion 11 is provided with an operating hole 116 communicating with the movable cavity 117, see Fig.10 , the orifice plate body 2 is provided with an operating structure 22, the operating hole 116 and the operating structure 22 are both located between the two first parts 113, the operating structure 22 is exposed in the operating hole 116, and the operating structure 22 is used to be driven to make the orifice plate body 2 move. Efficient space utilization: the operating hole 116 is set between the two first parts 113, and the operating structure 22 is located between the two first seals 3, which makes full use of the internal space of the movable part 11. This layout makes the structure of the entire device more compact, reduces space occupation, and is convenient for installation and use in a limited installation space. Reduce external interference: the two first parts 113 and the two first seals 3 can protect the operating structure 22 to a certain extent, prevent dust, impurities, etc. from entering the orifice plate body 2 and affecting the flow of the fluid. By setting the operating hole 116 and the operating structure 22, the operator can directly drive the orifice plate body 2 from the outside. Without disassembling the entire device, the position of the orifice plate body 2 can be easily adjusted to achieve control of the fluid flow.

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

[0051] See also Fig.10 In an optional embodiment, the operating structure 22 may be a groove recessed on the orifice plate body 2. Torsion may be applied to the groove to drive the groove to drive the orifice plate body 2 to rotate.

[0052] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0053] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, 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 implementation method.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A rotating orifice flow device, characterized in that: include: A flow guiding body, wherein the flow guiding body is provided with a flow channel and an active cavity communicating with the flow channel; as well as An orifice plate body, wherein the orifice plate body is movably disposed in the movable cavity, and a plurality of diversion holes with different apertures are penetrated through the orifice plate body, and the orifice plate body is used to be driven to move in the movable cavity so that one of the diversion holes is connected to the flow channel.

2. The rotating orifice flow device according to claim 1, characterized in that: The flow guide body includes a connected movable part and a flow guide part, the movable part includes a first end and a second end opposite to each other along its own axial direction, the flow guide part is arranged at the first end and the second end, the movable part is protruded from the outer wall of the flow guide part, the movable part is provided with the movable cavity, the flow guide part is provided with the flow channel, and the orifice plate body is accommodated in the movable part and can be movably abutted against the inner wall of the movable part and the inner wall of the flow guide part.

3. The rotating orifice flow device according to claim 2, characterized in that: The movable portion includes a first portion and a second portion that are bent and connected, the first portion is protruding from the outer wall of the guide portion and extends in a radial direction of the guide portion in a direction away from the guide portion, the second portion is annularly arranged on the outer periphery of the guide portion, the first portion is arranged at the first end and the second end of the second portion, the second portion and the first portion are bent and connected to form a first accommodating step arranged in the movable cavity, and the rotating orifice plate flow device also includes a first sealing member, the first sealing member is annularly arranged on the first accommodating step and abuts against the orifice plate body.

4. The rotating orifice flow device according to claim 3, characterized in that: The movable part is penetrated by an operating hole connected to 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, and the operating structure is exposed in the operating hole. The operating structure is used to be driven to make the orifice plate body move.

5. The rotating orifice flow device according to claim 2, characterized in that: The inner wall of the guide portion is provided with a second accommodating step along its own axial direction near the first end of the movable portion. The rotating orifice plate flow device also includes a second sealing member, which is annularly arranged on the second accommodating step and abuts against the orifice plate body.

6. The rotating orifice flow device according to claim 5, characterized in that: The second accommodating step is connected to the first end of the movable portion in a chamfered annular surface.

7. The rotating orifice flow device according to claim 5, characterized in that: The guide portion is connected to the second end of the movable portion in a rounded annular surface.

8. The rotating orifice flow device according to claim 2, characterized in that: A radial dimension d1 of the flow passage of the flow guide portion disposed at the first end is smaller than a radial dimension d2 of the flow passage of the flow guide portion disposed at the second end.

9. The rotating orifice 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 rolled in the active cavity. The orifice plate body is penetrated by a guide opening connected to a plurality of the diversion holes, and the orifice plate body is used to be driven to roll in the active cavity so that one of the diversion holes and the guide opening are connected to the flow channel.

10. The rotating orifice flow device according to claim 9, characterized in that: The orifice plate body is used to be driven to roll along a first direction, the plurality of diversion holes are arranged at intervals along the first direction, and the apertures of the plurality of diversion holes increase one by one along the first direction.

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