Rotary flow regulation assembly and irradiation device

Abstract

The invention provides a rotary flow adjusting assembly and an irradiation device, the rotary flow adjusting assembly comprises a water inlet pipe, a flow channel is formed in the water inlet pipe, and a water inlet is formed in the side wall of the water inlet pipe; the flow guide part is arranged in the water inlet pipe, the flow guide part is of a hollow structure, a containing cavity is formed in the flow guide part, an upper flow guide opening and a lower flow guide opening are formed in the side wall of the flow guide part, the upper flow guide opening is communicated with the water inlet, and the lower flow guide opening is communicated with the flow channel; the valve element is rotationally arranged in the containing cavity and is also of a hollow structure, an adjusting cavity is formed in the valve element, and a pressure compensation opening and an adjusting opening are formed in the positions, opposite to the upper flow guide opening and the lower flow guide opening, in the side wall of the valve element correspondingly, so that the pressure compensation opening can be communicated with the upper flow guide opening when the valve element is rotated; meanwhile, the adjusting port can be communicated with the lower flow guide port; the passing areas of the water inlet, the upper flow guide opening and the pressure compensation opening are gradually decreased in the flow path direction, a sudden contraction and sudden expansion structure is formed, backflow can occur in the adjusting cavity, and therefore the flow resistance coefficient is increased.

Description

Technical Field

[0001] The present application belongs to the field of fluid control technology, and specifically relates to a rotary flow regulating component and an irradiation device. Background Art

[0002] The flow regulating assembly is similar to the common mechanical regulating valve in the industrial field. It mainly controls the valve core structure to change the size of the water inlet, thereby playing the role of flow regulation. The existing flow regulating assembly for irradiation devices can regulate the water flow entering the irradiation device to a certain extent. However, due to its small resistance coefficient, the regulating effect on the flow is not obvious when the opening is large. The flow remains basically unchanged when the valve core is moved, and the flow changes rapidly when the opening is small. The adjustable range of flow regulation is narrow, and the flow cannot be accurately regulated. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present application is to provide a rotary flow regulating component and an irradiation device, which can increase the resistance coefficient and improve the sensitivity of flow regulation.

[0004] In order to solve the above problems, one aspect of the present application provides a rotary flow regulating assembly, comprising:

[0005] A water inlet pipe, wherein a flow channel is formed inside the water inlet pipe, and a water inlet is provided on a side wall of the water inlet pipe;

[0006] A flow guide member, the flow guide member is arranged in the water inlet pipe, the flow guide member is a hollow structure, a containing cavity is formed inside the flow guide member, and an upper flow guide port and a lower flow guide port are arranged on the side wall of the flow guide member, the upper flow guide port is connected to the water inlet, and the lower flow guide port is connected to the flow channel;

[0007] A valve core, the valve core is rotatably arranged in the accommodating cavity, the valve core is also a hollow structure, an adjusting cavity is formed inside the valve core, and a pressure compensation port and an adjusting port are respectively arranged in the side wall of the valve core at positions relative to the upper guide port and the lower guide port, so that when the valve core is rotated, the pressure compensation port can be communicated with the upper guide port, and the adjusting port can be communicated with the lower guide port;

[0008] Among them, the passage area of ​​the upper guide port is smaller than the passage area of ​​the water inlet, and the passage area of ​​the pressure compensation port is smaller than the passage area of ​​the upper guide port.

[0009] Optionally, the pressure compensation port on the side wall of the valve core and the upper guide port on the side wall of the guide member have different shapes, so that the area value of the connecting area between the pressure compensation port and the upper guide port can gradually increase or decrease at a non-constant ratio.

[0010] Optionally, when the area value of the connecting area between the pressure compensation port and the upper guide port reaches an upper limit value, the projection of the pressure compensation port on a plane perpendicular to the flow path direction is an equilateral triangle, and the projection of the upper guide port on a plane perpendicular to the flow path direction is a circle, and the equilateral triangle is tangent to the circle.

[0011] Optionally, the area value of the lower guide port is smaller than the upper limit value.

[0012] Optionally, the flow guide member is clearance-fittedly arranged in the water inlet pipe, and the valve core is clearance-fittedly arranged in the flow guide member.

[0013] Optionally, the rotary flow regulating component further comprises:

[0014] A driving structure, a valve stem is coaxially arranged on the top of the valve core, the valve stem passes through the guide member and is connected to the driving structure, and the driving structure is used to drive the valve stem to rotate, so as to drive the valve core to rotate through the valve stem.

[0015] Optionally, the driving structure includes:

[0016] Drive unit;

[0017] A worm, the worm is connected to the driving part, and the driving part is used to drive the worm to rotate;

[0018] A worm wheel is meshed with the worm, and the worm wheel is located at the top of the valve stem and is coaxially arranged with the valve stem.

[0019] Optionally, the lead angle of the worm is smaller than the equivalent friction angle between the worm wheel teeth.

[0020] Optionally, the driving unit is a motor or a handwheel.

[0021] Another aspect of the present application provides an irradiation device, comprising a rotary flow regulating assembly as described in any one of the above.

[0022] Beneficial Effects

[0023] The embodiment of the present invention provides a rotary flow regulating component and an irradiation device, wherein the rotary flow regulating component can construct a structural system of sudden contraction and expansion by sequentially setting the passage areas of the water inlet, the upper guide port, and the pressure compensation port to a decreasing state, and combining with the regulating cavity. Under the action of this structure, vortices and turbulence will be generated in the regulating cavity, so that the resistance coefficient of the rotary flow regulating component can be improved, the partial pressure is increased, and the local resistance loss of the fluid is increased, thereby significantly improving the sensitivity of the flow regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a rotary flow regulating assembly of an optional embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of a water inlet pipe of an optional embodiment of the present application;

[0026] Figure 3 A cross-sectional view of a water inlet pipe according to an optional embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of a flow guide member of an optional embodiment of the present application;

[0028] Figure 5 A cross-sectional view of a flow guide member of an optional embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of a valve core of an optional embodiment of the present application;

[0030] Figure 7 A cross-sectional view of a valve core according to an optional embodiment of the present application;

[0031] Figure 8 A schematic diagram of the three-dimensional structure of a driving structure of an optional embodiment of the present application;

[0032] Fig. 9 A front view of a driving structure of an optional embodiment of the present application;

[0033] Fig.10 for Figure 1 A relationship diagram between the relative resistance coefficient and the relative stroke of the rotary flow regulating component and the traditional flow regulating component shown;

[0034] Fig.11 This is a flow state diagram inside a traditional flow regulating component;

[0035] Fig.12 for Figure 1 The internal flow state diagram of the rotary flow regulating component shown;

[0036] Fig.13 It is the inherent flow characteristic curve diagram of the traditional flow regulating component;

[0037] Fig.14 for Figure 1 The inherent flow characteristic curve of the rotary flow regulating assembly shown;

[0038] Fig.15 It is the working flow characteristic curve diagram of the traditional flow regulating component;

[0039] Fig.16 for Figure 1The working flow characteristic curve of the rotary flow regulating component is shown.

[0040] The reference numerals are:

[0041] 1. Water inlet pipe; 11. Flow channel; 12. Water inlet; 2. Flow guide; 21. Accommodating chamber; 22. Upper flow guide port; 23. Lower flow guide port; 24. Fixed pipe; 3. Valve core; 31. Adjusting chamber; 32. Pressure compensation port; 33. Adjusting port; 34. Valve stem; 4. Driving structure; 41. Worm gear; 42. Worm; 43. Driving unit. DETAILED DESCRIPTION

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0046] An embodiment of the first aspect of the present application provides a rotary flow regulating component, and an embodiment of the second aspect of the present application provides an irradiation device, which includes a test section, and the test section is used in conjunction with the rotary flow regulating component.

[0047] Specifically, the test section includes an upper joint, an outer sleeve and a lower joint which are sequentially connected along the flow path direction, wherein the upper joint is also connected to a rotary flow regulating component, and the rotary flow regulating component is used to regulate the flow of cooling water entering the upper joint.

[0048] See also Figures 1 to 9 As shown, the rotary flow regulating assembly provided by the embodiment of the first aspect of the present application includes: a water inlet pipe 1, a flow channel 11 is formed inside the water inlet pipe 1, and a water inlet 12 is arranged on the side wall of the water inlet pipe 1; a flow guide member 2, the flow guide member 2 is arranged in the water inlet pipe 1, the flow guide member 2 is a hollow structure, a containing cavity 21 is formed inside the flow guide member 2, and an upper flow guide port 22 and a lower flow guide port 23 are arranged on the side wall of the flow guide member 2, the upper flow guide port 22 is connected to the water inlet 12, and the lower flow guide port 23 is connected to the flow channel 11; a valve core 3, the valve core 3 is rotatably arranged In the accommodating cavity 21, the valve core 3 is also a hollow structure, and an adjusting cavity 31 is formed inside the valve core 3. A pressure compensation port 32 and an adjusting port 33 are respectively arranged in the side wall of the valve core 3 at positions relative to the upper guide port 22 and the lower guide port 23, so that when the valve core 3 is rotated, the pressure compensation port 32 can be connected with the upper guide port 22, and the adjusting port 33 can be connected with the lower guide port 23; wherein, the passage area of ​​the upper guide port 22 is smaller than the passage area of ​​the water inlet 12, and the passage area of ​​the pressure compensation port 32 is smaller than the passage area of ​​the upper guide port 22.

[0049] Among them, the water inlet 12, the upper flow guide port 22, the lower flow guide port 23 and the pressure compensation port 32 can be provided in multiples. For example, the water inlet 12, the upper flow guide port 22, the lower flow guide port 23 and the pressure compensation port 32 are each provided with four, and the four water inlets 12 are evenly arranged along the circumferential direction of the water inlet pipe 1; the four upper flow guide ports 22 and the four lower flow guide ports 23 are evenly arranged along the circumferential direction of the flow guide member 2, and the four pressure compensation ports 32 are evenly arranged along the circumferential direction of the valve core 3.

[0050] Among them, the four upper guide ports 22 are located at the upper part of the guide member 2, and the four upper guide ports 22 are arranged one-to-one with the four water inlets 12 along the radial direction to ensure that the fluid can smoothly enter the regulating chamber 31; the four lower guide ports 23 are located at the lower part of the guide member 2, and the four lower guide ports 23 are arranged one-to-one with the four upper guide ports 22 along the axial direction to ensure that the fluid can be discharged smoothly after entering the regulating chamber 31.

[0051] Specifically, the guide member 2 is in a stepped shape. The upper region of the guide member 2 is connected to the inner wall of the water inlet pipe 1, and the lower region of the guide member 2 is spaced a certain distance from the inner wall of the water inlet pipe 1, so that the fluid in the regulating chamber 31 can be smoothly discharged into the flow channel 11 through the lower guide port 23, ensuring the smoothness and stability of the fluid flow.

[0052] Among them, the four pressure compensation ports 32 are located in the area surrounded by the projection lines formed by the four upper flow guide ports 22 on the valve core 3. When the valve core 3 rotates, the relative positions of the four pressure compensation ports 32 and the four upper flow guide ports 22 will change. At the same time, the four regulating ports 33 are arranged in a one-to-one correspondence with the four pressure compensation ports 32 along the axial direction, and the four regulating ports 33 are located in the area surrounded by the projection lines formed by the four lower flow guide ports 23 on the valve core 3. When the valve core 3 rotates, the relative positions of the four regulating ports 33 and the four lower flow guide ports 23 will also change.

[0053] Specifically, when the valve core 3 is opened to closed, the valve core 3 is rotated so that the pressure compensation port 32 and the regulating port 33 are blocked by the guide member 2. When the valve core 3 is closed to open, the valve core 3 is rotated so that the pressure compensation port 32 blocked by the guide member 2 is gradually exposed to communicate with the upper guide port 22 and the water inlet 12, and the regulating port 33 is also gradually exposed to communicate with the lower guide port 23.

[0054] Among them, the use of a rotary flow regulating assembly for an irradiation device is taken as an example. When the cooling water flow of the test section needs to be adjusted, the valve core 3 is rotated to change the resistance characteristics of the flow regulating assembly to adjust the cooling water flow. In this process, the cooling water from the outside of the irradiation device enters the regulating chamber 31 inside the valve core 3 in the radial direction through the water inlet 12, the upper guide port 22 and the pressure compensation port 32. In the regulating chamber 31, the cooling water is collected, and its flow direction is changed from radial to axial. Subsequently, when the cooling water reaches the regulating port 33, the flow direction is changed from axial to radial, and it flows out of the regulating chamber 31 and enters the flow channel 11.

[0055] Specifically, the effective area for cooling water to pass through at the water inlet 12, the upper guide port 22 and the pressure compensation port 32 tends to decrease successively along the flow path. At the same time, the effective area for cooling water to pass through the regulating chamber 31 is larger than the effective area for cooling water to pass through at the cooling water inlet 12, the upper guide port 22 and the pressure compensation port 32, forming a sudden contraction and expansion structure, thereby increasing the resistance coefficient and partial pressure of the flow regulating component and increasing the local resistance loss of the water flow. Further, see Fig.10 As shown, Fig.10 The figure is a relationship diagram between the relative resistance coefficient and relative stroke of the rotary flow regulating component provided by the embodiment of the present application and the traditional flow regulating component. Fig.10It can be seen that when the relative stroke is small, the resistance coefficient changes greatly, while when the relative stroke is large, the resistance coefficient remains basically unchanged. When the flow regulating component is fully open, that is, when the relative stroke is 100%, the relative resistance coefficient of the rotary flow regulating component provided in the embodiment of the present application is higher than the relative resistance coefficient of the traditional flow regulating component; in the process of the relative stroke changing from large to small, the position where the resistance coefficient of the rotary flow regulating component provided in the embodiment of the present application rises rapidly is also relatively early, that is, the relationship curve between the relative resistance coefficient and the relative stroke of the rotary flow regulating component provided in the embodiment of the present application is smoother than the relationship curve between the relative resistance coefficient and the relative stroke of the traditional flow regulating component. It can be seen that the rotary flow regulating component provided in the embodiment of the present application has increased the resistance coefficient and improved the sensitivity of flow regulation compared to the traditional flow regulating component.

[0056] The pressure compensation port 32 is located at the upper part of the regulating chamber 31, and the regulating port 33 is located at the lower part of the regulating chamber 31. Fig.12 As shown, in the regulating chamber 31, since the effective area for cooling water to pass through at the pressure compensation port 32 is smaller than the effective area for cooling water to pass through the regulating chamber 31, the cooling water flow rate in the upper part of the regulating chamber 31 is faster, and the cooling water flow rate in the lower part of the regulating chamber 31 is slower, thereby forming a pressure difference, resulting in backflow in the regulating chamber 31, generating vortices and turbulence, etc., increasing the flow resistance loss, which is conducive to more sensitive regulation of the flow entering the flow channel 11. For the traditional flow regulating component, see Fig.11 As shown, the inlet and outlet pressure difference of the traditional flow regulating component is small, the flow of cooling water in the traditional flow regulating component is relatively simple, the mainstream flow direction is clear, not subject to much interference, the resistance coefficient is small, and the regulating effect on the flow is not obvious when the opening is large. The flow rate remains basically unchanged when the valve core 3 is moved. When the opening is small, moving the valve core 3 causes the flow rate to change rapidly. The adjustable range of flow regulation is narrow, and the flow rate cannot be accurately regulated.

[0057] In some possible implementations disclosed in this application, see Figures 4 to 7 As shown, the pressure compensation port 32 on the side wall of the valve core 3 and the upper flow guide port 22 on the side wall of the flow guide member 2 have different shapes, so that the area value of the communication area between the pressure compensation port 32 and the upper flow guide port 22 can gradually increase or decrease at an inconstant ratio. As a result, the flow rate and the stroke of the valve core 3 present a good linear relationship, increasing the sensitivity and adjustable range of the flow rate regulation.

[0058] Among them, when the pressure compensation port 32 on the side wall of the valve core 3 and the upper flow guide port 22 on the side wall of the flow guide member 2 have different shapes, the pressure compensation port 32 and the upper flow guide port 22 will present different overlapping states at different relative positions. For example, if the pressure compensation port 32 is elliptical and the upper flow guide port 22 is rectangular, as the valve core 3 rotates, the overlapping portion of the two will continue to change, and their shape and size will also change accordingly.

[0059] Specifically, during the rotation of the valve core 3, due to the difference in shape between the pressure compensation port 32 and the upper guide port 22, the area of ​​the communication region will not change at a constant rate. For example, at the initial position, there may be only a small part of overlap, and the area of ​​the communication region is small; as the valve core 3 continues to rotate, the overlapped part gradually increases, but due to the particularity of the shape, the increase in area is not linear. The area may increase faster at a certain stage and slower at another stage, and may even stagnate or decrease for a short time.

[0060] For some specific examples, see Figure 1 As shown, when the area value of the communicating area between the pressure compensation port 32 and the upper flow guide port 22 reaches the upper limit value, the projection of the pressure compensation port 32 on the plane perpendicular to the flow path direction is an equilateral triangle, and the projection of the upper flow guide port 22 on the plane perpendicular to the flow path direction is a circle, and the equilateral triangle is tangent to the circle. As a result, the flow rate and the stroke of the valve core 3 present a good linear relationship, which increases the sensitivity and adjustable range of the flow rate regulation.

[0061] Specifically, when the stroke of the valve core 3 is 100%, that is, when the rotary flow regulating assembly is fully opened, one side of the projection of the pressure compensation port 32 on a plane perpendicular to the flow path direction contacts the outside of the projection of the upper flow guide port 22 on a plane perpendicular to the flow path direction, forming an external tangent relationship. At this time, the area of ​​the communicating area between the pressure compensation port 32 and the upper flow guide port 22 is in a relatively large but not completely overlapping state, so that a certain flow rate can be guaranteed to pass in the fully open state, and at the same time, the flow rate can be limited and adjusted to a certain degree relative to the stroke through this special geometric relationship.

[0062] The following is a comparative analysis of the rotary flow regulating component provided in the embodiment of the present application and the traditional flow regulating component in combination with specific numerical values ​​and drawings.

[0063] Table 1

[0064] Relative stroke Stroke(mm) Average flow rate (m / s) Flow rate (t / h) Drag coefficient Flow coefficient 100％ 0 0.42 5.69 1.71 147.50 90％ 4 0.30 4.30 3.26 111.45 80％ 8 0.22 2.66 6.35 69.04 70％ 12 0.18 1.72 9.54 44.48 60％ 16 0.15 1.08 14.22 27.93 50％ 20 0.12 0.61 19.44 15.73 40％ 24 0.05 0.15 110.53 3.85 30％ 28 0.05 0.14 112.25 3.68 20％ 32 0.05 0.13 114.46 3.40 10％ 36 0.05 0.11 121.98 2.78

[0065] Table 2

[0066]

[0067]

[0068] Table 1 shows the simulation calculation results of the traditional flow regulating component under different relative strokes. The inherent flow characteristic curve of the traditional flow regulating component is obtained by fitting the data in Table 1. Fig.13 shown.

[0069] Specifically, combining Table 1 and Fig.13 It can be seen that, in the fully open state, the flow coefficient of the traditional flow regulating component is larger and the resistance coefficient is smaller. The resistance coefficient decreases with the increase of the relative stroke. When the relative stroke changes from 40% to 50%, the resistance coefficient decreases significantly due to the sudden change in the flow area of ​​the water inlet 12. The inherent flow characteristic of the traditional flow regulating component is an equal percentage type. When the relative stroke is small, the flow rate changes slowly when the relative stroke is changed. When the relative stroke is large, the flow rate changes rapidly when the relative stroke is changed.

[0070] Among them, Table 2 shows the simulation calculation results of the rotary flow regulating component provided in the embodiment of the present application under different relative strokes. The inherent flow characteristic curve of the rotary flow regulating component provided in the embodiment of the present application is obtained by fitting the data in Table 2. Fig.14 shown.

[0071] Specifically, combining Table 2 and Fig.14 It can be seen that under the inherent flow characteristics, compared with the traditional flow regulating components, the resistance coefficient of the rotary flow regulating component provided in the embodiment of the present application is larger, the flow coefficient is smaller, and the change trend is relatively gentle; the inherent flow characteristics of the rotary flow regulating component provided in the embodiment of the present application are close to the linear flow characteristics, that is, the relative flow and the relative stroke show a linear relationship, and the flow change rate under different relative strokes remains basically unchanged.

[0072] Table 3

[0073]

[0074]

[0075] Table 4

[0076]

[0077] Among them, Table 3 shows the simulation calculation results of the traditional flow regulating component connected in series with the test section. The working flow characteristic curve of the traditional flow regulating component is obtained by fitting the data in Table 3. Fig.15 shown.

[0078] Specifically, combining Table 3 and Fig.15It can be seen that the partial pressure of the traditional flow regulating component decreases with the increase of the relative stroke, and the larger the relative stroke, the smaller the amplitude of the change; in the process of increasing the relative stroke, the average flow rate of the cooling water increases first and then decreases. This is because when the relative stroke is large, the partial pressure of the traditional flow regulating component is small, the flow rate remains basically unchanged, and the increase in the flow area reduces the average flow rate. When the relative stroke is small, the partial pressure decreases rapidly, the flow rate increases rapidly, the impact of the change in the flow area weakens, and the average flow rate begins to increase; the flow coefficient increases with the increase of the relative stroke, while the resistance coefficient decreases rapidly with the increase of the relative stroke. The flow rate decreases with the increase of the partial pressure. The main reason is that under the condition of constant pressure difference, due to the increase of the relative stroke, the resistance coefficient of the traditional flow regulating component decreases, while the resistance coefficient of the test section remains unchanged, causing the partial pressure of the flow regulating component to decrease, and the total resistance coefficient decreases, causing the overall flow rate to increase.

[0079] Among them, Table 4 shows the simulation calculation results of the rotary flow regulating assembly provided in the embodiment of the present application and the test section in series. The working flow characteristic curve of the rotary flow regulating assembly provided in the embodiment of the present application is obtained by fitting the data in Table 4. Fig.16 shown.

[0080] Specifically, combining Table 4 and Fig.16 It can be seen that, compared with the traditional flow regulating component and the rotary flow regulating component provided in the embodiment of the present application, the partial pressure of the rotary flow regulating component provided in the embodiment of the present application and the average flow velocity of the internal fluid are significantly larger, and the average flow velocity also shows a trend of first increasing and then decreasing; when the relative stroke is large, the resistance coefficient of the rotary flow regulating component provided in the embodiment of the present application is larger than that of the traditional flow regulating component, and the flow coefficient is smaller than that of the traditional flow regulating component; the resistance coefficient and flow coefficient of the rotary flow regulating component provided in the embodiment of the present application change with the relative stroke more slowly than those of the traditional flow regulating component.

[0081] In the above embodiments, see Figure 4 and Figure 5 As shown, the area value of the lower guide port 23 is smaller than the upper limit value. Therefore, when the cooling water flows out from the regulating chamber 31 to the lower guide port 23, a contraction area is formed again, further improving the resistance coefficient of the rotary flow regulating assembly.

[0082] In some possible embodiments disclosed in the present application, the guide member 2 is provided in the water inlet pipe 1 with a clearance fit, and the valve core 3 is provided in the guide member 2 with a clearance fit. Thus, when the valve core 3 of the rotary flow regulating assembly is closed, a small amount of cooling water still enters the test section through the flow channel 11, which is used to ensure the basic cooling conditions of the irradiation device, avoid the heat generated by the irradiation device cannot be taken away in time and cause serious burning, and ensure the safe operation of the irradiation test and the research reactor.

[0083] In some possible implementations disclosed in this application, see Figure 1 , Figure 8 and Fig. 9 As shown, the rotary flow regulating assembly also includes: a driving structure 4, a valve stem 34 is coaxially arranged on the top of the valve core 3, the valve stem 34 passes through the guide member 2 and is connected to the driving structure 4, and the driving structure 4 is used to drive the valve stem 34 to rotate, so as to drive the valve core 3 to rotate through the valve stem 34.

[0084] By providing the driving structure 4, the rotation angle of the valve core 3 can be accurately adjusted, thereby achieving fine adjustment of the cooling water flow rate, ensuring that the irradiation device always operates within a suitable temperature range.

[0085] The driving structure 4 can be used as a power source of the rotary flow regulating assembly to provide power for the valve core 3 to rotate so as to adjust the flow. For example, the driving structure 4 can be a motor, a pneumatic device or other device capable of generating a rotary motion, etc., which is not limited in this application.

[0086] The driving structure 4 is connected to the valve stem 34 , and the valve stem 34 is located at the top of the valve core 3 . The driving structure 4 is used to drive the valve stem 34 to move and drive the valve core 3 to rotate through the valve stem 34 .

[0087] Specifically, the valve stem 34 is roughly cylindrical, and the axis of the valve stem 34 coincides with the axis of the valve core 3, so that the valve stem 34 will not shake or get stuck due to its irregular shape during rotation, thereby ensuring the smoothness of rotation and achieving accurate control of the cooling water flow.

[0088] A through hole is provided on the guide member 2 at a position relative to the valve stem 34 for passing the valve stem 34. A fixing pipe 24 is provided at the through hole. The fixing pipe 24 is a hollow structure with both ends open and extends in the same direction as the valve stem 34, so that the valve stem 34 can pass through smoothly.

[0089] Specifically, sealing material is filled between the inner wall of the fixed tube 24 and the outer wall of the valve stem 34 , which can effectively prevent cooling water from leaking from the gap between the valve stem 34 and the fixed tube 24 ; on the other hand, it can also reduce the possibility of external impurities entering the flow channel 11 .

[0090] The sealing material may be abrasive sealing materials such as asbestos fibers.

[0091] In some possible implementations disclosed in this application, see Figure 1 , Figure 8 and Fig. 9As shown, the driving structure 4 includes: a driving part 43; a worm 42, the worm 42 is connected to the driving part 43, and the driving part 43 is used to drive the worm 42 to rotate; a worm wheel 41, the worm wheel 41 is meshed with the worm 42, and the worm wheel 41 is located at the top of the valve stem 34 and is coaxially arranged with the valve stem 34.

[0092] It should be noted that the transmission of the worm 42 and the worm wheel 41 has a large transmission ratio, which increases the angular stroke of the valve core 3 and can convert the high-speed rotation of the driving part 43 into a slow and precise rotation of the valve stem 34. This makes it possible to achieve very fine adjustments when adjusting the cooling water flow, accurately control the position of the valve core 3, and thus accurately adjust the cooling water flow entering the test section.

[0093] The driving part 43 is the power source of the driving structure 4, and can be an electric motor, an air motor or other equipment capable of providing rotational power. The driving part 43 is used to generate initial rotational power to drive subsequent transmission components.

[0094] The worm 42 is connected to the driving part 43 and is driven to rotate by the driving part 43. The worm 42 is usually a cylindrical rod with helical teeth, and its helical teeth mesh with the teeth of the worm wheel 41 to transmit the rotational motion of the driving part 43 to the worm wheel 41.

[0095] The worm wheel 41 meshes with the worm 42, is located at the top of the valve stem 34 and is coaxially arranged with the valve stem 34. The worm wheel 41 is a disc with a toothed structure. When the worm 42 rotates, the worm wheel 41 is driven to rotate through the meshing action of the teeth. Since the worm wheel 41 is coaxial with the valve stem 34, the rotation of the worm wheel 41 is directly transmitted to the valve stem 34, thereby driving the valve core 3 to rotate.

[0096] Specifically, in actual applications, when it is necessary to adjust the cooling water flow of the rotary flow regulating assembly, the driving unit 43 starts to work and generates a rotational force. The rotational force of the driving unit 43 is transmitted to the worm 42 through the connecting device, causing the worm 42 to start rotating. The rotation of the worm 42 drives the worm wheel 41 to rotate through the meshing action with the worm wheel 41. Since the worm wheel 41 is coaxially connected to the valve stem 34, the rotation of the worm wheel 41 will drive the valve stem 34 to rotate together. The rotation of the valve stem 34 further drives the valve core 3 to rotate in the guide member 2, thereby changing the relative positions of the pressure compensation port 32 and the regulating port 33 on the valve core 3 and the upper guide port 22 and the lower guide port 23 on the guide member 2, thereby realizing the regulation of the cooling water flow.

[0097] In the above embodiment, the lead angle of the worm 42 is smaller than the equivalent friction angle between the teeth of the worm wheel 41. Therefore, the driving structure 4 has a self-locking property.

[0098] Specifically, when there is no external driving force acting on the worm 42, the worm wheel 41 cannot drive the worm 42 to rotate, thereby ensuring that the valve core 3 can remain stable after being adjusted to a specific position, and will not rotate accidentally due to external interference (such as changes in the flow pressure of cooling water, vibration of equipment, etc.), thereby ensuring the stability of the cooling water flow rate.

[0099] In some specific examples, the driving unit 43 is a motor or a hand wheel.

[0100] When the driving part 43 is a motor, the motor converts electrical energy into mechanical energy to generate rotational motion. It is understandable that the motor can be connected to a control system to achieve remote control and automated operation. For example, in an automated control system, the motor can accurately adjust the speed and direction according to the signal fed back by the sensor to achieve automatic adjustment of the cooling water flow.

[0101] When the driving part 43 is a hand wheel, the operator manually rotates the hand wheel to convert manpower into mechanical energy to drive the worm 42 to rotate. The hand wheel is usually connected to the worm 42 by gear transmission, chain transmission or direct connection. It can be understood that the hand wheel operation does not require a complex electrical control system. The operator can directly adjust the flow rate by rotating the hand wheel. The operation is simple and intuitive, easy to master, and the cost is relatively low.

[0102] Furthermore, when the driving part 43 is a hand wheel, the hand wheel may be provided with an indicator handle and a scale label. The indicator handle is a protruding part installed on the hand wheel, usually with a distinct shape or color, so that the operator can easily identify and operate it during operation. The scale label is a mark marked on the hand wheel or its surroundings, usually expressed in angles or other units, used to indicate the rotation position of the hand wheel, thereby determining the angular travel of the valve core 3.

[0103] Specifically, when the operator needs to adjust the cooling water flow rate, first observe the scale on the scale label to determine the current position of the valve core 3 and the flow rate. Then, hold the indicator handle and turn the hand wheel clockwise or counterclockwise to increase or decrease the cooling water flow rate as needed. In the process of turning the hand wheel, the operator can determine the rotation position of the hand wheel and the angular stroke of the valve core 3 by observing the scale changes on the scale label. When the required flow rate is reached, stop turning the hand wheel and record the current position of the valve core 3 according to the scale on the scale label for reference during the next operation.

[0104] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0105] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A rotary flow regulating assembly, characterized in that: include: A water inlet pipe (1), wherein a flow channel (11) is formed inside the water inlet pipe (1), and a water inlet (12) is provided on a side wall of the water inlet pipe (1); A flow guide member (2), the flow guide member (2) being arranged in the water inlet pipe (1), the flow guide member (2) being a hollow structure, a receiving cavity (21) being formed inside the flow guide member (2), a side wall of the flow guide member (2) being provided with an upper flow guide port (22) and a lower flow guide port (23), the upper flow guide port (22) being connected to the water inlet (12), and the lower flow guide port (23) being connected to the flow channel (11); A valve core (3), the valve core (3) being rotatably arranged in the accommodating cavity (21), the valve core (3) also being a hollow structure, an adjusting cavity (31) being formed inside the valve core (3), and a pressure compensation port (32) and an adjusting port (33) being respectively arranged in a side wall of the valve core (3) at positions relative to the upper flow guide port (22) and the lower flow guide port (23), so that when the valve core (3) is rotated, the pressure compensation port (32) can be communicated with the upper flow guide port (22), and the adjusting port (33) can be communicated with the lower flow guide port (23); The passage area of ​​the upper flow guide port (22) is smaller than the passage area of ​​the water inlet (12), and the passage area of ​​the pressure compensation port (32) is smaller than the passage area of ​​the upper flow guide port (22).

2. The rotary flow regulating assembly according to claim 1, characterized in that: The pressure compensation port (32) on the side wall of the valve core (3) and the upper flow guide port (22) on the side wall of the flow guide member (2) have different shapes, so that the area value of the connecting area between the pressure compensation port (32) and the upper flow guide port (22) can gradually increase or decrease at a non-constant ratio.

3. The rotary flow regulating assembly according to claim 2, characterized in that: When the area value of the connection area between the pressure compensation port (32) and the upper guide port (22) reaches an upper limit value, the projection of the pressure compensation port (32) on a plane perpendicular to the flow path direction is an equilateral triangle, the projection of the upper guide port (22) on a plane perpendicular to the flow path direction is a circle, and the equilateral triangle is tangent to the circle.

4. The rotary flow regulating assembly according to claim 3, characterized in that: The area value of the lower flow guide port (23) is smaller than the upper limit value.

5. The rotary flow regulating assembly according to claim 1, characterized in that: The flow guide member (2) is arranged in the water inlet pipe (1) with a clearance fit, and the valve core (3) is arranged in the flow guide member (2) with a clearance fit.

6. The rotary flow regulating assembly according to claim 1, characterized in that: Also includes: A driving structure (4), wherein a valve stem (34) is coaxially arranged on the top of the valve core (3), the valve stem (34) passes through the flow guide member (2) and is connected to the driving structure (4), and the driving structure (4) is used to drive the valve stem (34) to rotate, so as to drive the valve core (3) to rotate through the valve stem (34).

7. The rotary flow regulating assembly according to claim 6, characterized in that: The driving structure (4) comprises: A driving unit (43); A worm (42), wherein the worm (42) is connected to the driving portion (43), and the driving portion (43) is used to drive the worm (42) to rotate; A worm wheel (41), the worm wheel (41) meshing with the worm (42), the worm wheel (41) being located at the top of the valve stem (34) and being coaxially arranged with the valve stem (34).

8. The rotary flow regulating assembly according to claim 7, characterized in that: The lead angle of the worm (42) is smaller than the equivalent friction angle between the teeth of the worm wheel (41).

9. The rotary flow regulating assembly according to claim 7, characterized in that: The driving part (43) is a motor or a hand wheel.

10. An irradiation device, characterized in that: It comprises a rotary flow regulating assembly as described in any one of claims 1-9.

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