A spiral mixing rectification structure and method
Through the spiral blending rectifier structure, the combination of the spiral blending device and the rectifier baffle is solved, and the existing rectifier has poor rectification effect in the local velocity flow is achieved, which has achieved stable and uniform flow of the fluid, and improved the The accuracy of flow measurement.
Patent Information
- Application Number
- CN202411357814.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2044-09-27
AI Technical Summary
Existing rectifiers have poor rectification effects when dealing with flows with excessive local speeds, resulting in uneven fluid flow and eddy current problems, affecting the accuracy of flow measurement.
A spiral blending rectifier structure is designed, including a spiral blending device, a reduction baffle and a rectifier baffle. Through the spiral blending device, the fluid is rotated and flowed in the first spiral flow channel and decelerated, and then thrown out at the circumferential outlet. It is mixed and initially rectified under the action of the reduction baffle and the rectifier baffle, and finally enters the cylindrical rectifier for secondary rectification to ensure the smooth flow of the fluid.
It effectively reduces the turbulence and vortex caused by flow with excessive local velocity, improves the rectification effect, makes the fluid movement more stable and uniform, and improves the accuracy of flow measurement.
Smart Images
Figure CN118856139B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of fluid transportation, and in particular to a spiral mixing rectification structure and method. Background Art
[0002] The purpose of rectifier design is to optimize the flow direction and velocity distribution of the fluid through appropriate geometric shape and structural layout to reduce or eliminate eddies and turbulence, thereby improving the stability and uniformity of fluid movement. By optimizing the direction and velocity distribution of fluid flow, rectifiers can help ensure the accuracy and reliability of flow measurement. In pipeline systems, the unevenness or eddies of fluid flow may affect the accuracy of flow sensors and cause errors in measurement results. A properly designed rectifier can smooth the flow of fluids, reduce the effects of turbulence and eddies, and thus improve the accuracy of flow measurement. This is crucial for fluid management and control in various industrial applications, such as water supply systems, chemical processes, and oil and gas pipelines. At present, rectifiers mainly focus on simple structural improvements that change the shape of through holes. Such a multi-through hole structure can solve some turbulent flow problems, but its rectification effect is not ideal for some flows with excessive local velocities. Summary of the invention
[0003] The purpose of the embodiments of the present application is to provide a spiral mixing rectification structure and method to solve the technical problem in the related art that ordinary rectifiers have poor rectification effect on flows with excessive local velocities behind some valves or in pipelines.
[0004] According to an embodiment of the present application, a spiral mixing rectification structure is provided, characterized in that it includes a rectifier housing and a spiral mixing device, a deceleration baffle, a rectification baffle, and a cylindrical rectifier arranged in sequence in the rectifier housing along the flow channel direction, the spiral mixing device includes a housing and a spiral baffle, the housing includes an inlet baffle, a cylindrical section and a horn section, the inlet baffle is fixed at one end of the cylindrical section, the small mouth end of the horn section is fixed at the other end of the cylindrical section, the bottom of the large mouth end of the horn section is provided with an axial outlet, and the side wall of the large mouth end is provided with a circumferential outlet; the spiral baffle is fixed in the horn section, and forms a first spiral flow channel with the inner wall of the horn section, the center of the spiral baffle has a second spiral flow channel, the inlets of the first spiral flow channel and the second spiral flow channel are connected to the cylindrical section, the outlet of the first spiral flow channel is connected to the circumferential outlet, and the outlet of the second spiral flow channel is connected to the axial outlet.
[0005] Optionally, the inlet baffle is circular, with a through hole in the center, which is connected to the cylindrical section.
[0006] Optionally, the horn section is in a frustum shape, and the angle between the frustum generatrix and the normal line ranges from 20° to 40°.
[0007] Optionally, the interval between each turn of the spiral baffle corresponding to the spiral line is 5-7 mm.
[0008] Optionally, the deceleration baffle is circular with a through hole in the center.
[0009] Optionally, the rectifying baffle is circular, with a plurality of evenly distributed circular holes in the center.
[0010] The embodiment of the present invention also provides a method for using the above-mentioned spiral mixing rectification structure, including:
[0011] The fluid first enters the spiral mixing device, and rotates and flows in the first spiral flow channel under the action of the spiral baffle. As the inner diameter of the spiral mixing device continues to increase, the fluid is gradually decelerated, and finally the fluid is thrown out through the circumferential outlet; the fluid flowing out of the circumferential outlet of the spiral mixing device converges to the center under the action of the deceleration baffle, and finally fully mixes with the fluid at the axial outlet of the spiral mixing device and enters the central through hole of the rectifying baffle; the fluid is initially rectified under the action of the rectifying baffle, and most of the fluid flow is converted into a relatively smooth axial flow, and finally enters the cylindrical rectifier for secondary rectification, and finally the fluid flow with large turbulence or eddy current is converted into a smooth flow, an axial outlet is opened at the end of the spiral mixing device, and part of the fluid flows out from the axial outlet through the second spiral flow channel, and the fluid flowing out from the axial outlet will be fully mixed with the surrounding fluid at the deceleration baffle, thereby improving the rectification effect.
[0012] The technical solution provided by the embodiments of the present application may have the following beneficial effects:
[0013] As can be seen from the above embodiments, the fluid first enters the spiral blending device, which is fixed inside the rectifier housing in the form of welding. After entering the spiral blending device, the fluid rotates and flows in the first spiral flow channel under the action of the spiral baffle, and as the inner diameter of the spiral blending device continues to increase, the fluid gradually slows down, and finally the fluid is thrown out through the circumferential outlet. The fluid with higher speed around converges to the center under the action of the deceleration baffle, and finally fully mixes with the fluid at the axial outlet of the spiral blending device and enters the rectifying baffle. The fluid undergoes preliminary rectification under the action of the rectifying baffle, converting most of the fluid flow into a relatively smooth axial flow, and finally enters the cylindrical rectifier for secondary rectification, and finally converts the fluid flow with large turbulence or eddy current into a smooth flow. An axial outlet is opened at the end of the spiral blending device, and part of the fluid flows out from the axial outlet through the second spiral flow channel, which is used to solve the problem that the axial velocity around is large and the axial velocity at the center is small. The fluid flowing out from the axial outlet will be fully mixed with the fluid around at the deceleration baffle, thereby improving the rectification effect. The present application can be widely used in the field of fluid transportation. The fluid with large turbulence or eddy current is fully mixed through a spiral mixing device, and then the mixed fluid is rectified, thereby reducing the difficulty of rectification and improving the rectification effect.
[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0016] Figure 1 A schematic structural diagram of a spiral mixing rectifier structure provided in an embodiment of the present invention.
[0017] Figure 2 A schematic structural diagram of a spiral mixing device provided in an embodiment of the present invention.
[0018] Figure 3 for Figure 2 A perspective view of the internal structure.
[0019] Figure 4 A schematic structural diagram of a spiral baffle provided in an embodiment of the present invention.
[0020] Figure 5 for Figure 3 A partial enlarged view of area A.
[0021] Figure 6 for Figure 3 A partial enlarged view of area B in the middle.
[0022] Figure 7 An axonometric view of a rectifying baffle provided in an embodiment of the present invention.
[0023] The reference numerals in the figures are:
[0024] 100. Spiral mixing device;
[0025] 110, housing; 111, inlet baffle; 112, cylindrical section; 113, horn section; 114, axial outlet; 115, circumferential outlet;
[0026] 120, spiral baffle; 121, first spiral flow channel; 122, second spiral flow channel;
[0027] 200, rectifier housing;
[0028] 300, deceleration baffle;
[0029] 400, rectifying baffle;
[0030] 500. Cylindrical rectifier. DETAILED DESCRIPTION
[0031] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.
[0032] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0033] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".
[0034] refer to Figure 1-Figure 7, the present application provides a spiral mixing and rectifying structure, which can be widely used in the field of hydraulic transportation. The fluid with large turbulence or eddy current passes through the spiral mixing device 100, and the relatively chaotic axial velocity is converted into a relatively uniform radial velocity, so that it is fully mixed in the flow channel, and then passes through the deceleration baffle 300, the rectifying baffle 400, and the cylindrical rectifier 500, and finally converted into a relatively smooth fluid flow again, thereby improving the management and control of the fluid. The spiral mixing and rectifying structure includes a rectifier housing 200 and a spiral mixing device 100, a deceleration baffle 300, a rectifying baffle 400, and a cylindrical rectifier 500 arranged in sequence in the rectifier housing 200 along the flow channel direction. The spiral mixing device 100 includes a shell 110 and a spiral baffle 120. The shell 110 includes an inlet baffle 111, a cylindrical section 112 and a trumpet section 113. The inlet baffle 111 is fixed to one end of the cylindrical section 112, and the small-mouth end of the trumpet section 113 is fixed to the other end of the cylindrical section 112. The bottom of the large-mouth end of the trumpet section 113 is provided with an axial outlet 114, and the side wall of the large-mouth end is provided with a circumferential outlet 115. The spiral baffle 120 is fixed in the trumpet section 113 to form a first spiral flow channel 121 with the inner wall of the trumpet section 113. The center of the spiral baffle 120 has a second spiral flow channel 122. The inlets of the first spiral flow channel 121 and the second spiral flow channel 122 are connected to the cylindrical section 112, the outlet of the first spiral flow channel 121 is connected to the circumferential outlet 115, and the outlet of the second spiral flow channel 122 is connected to the axial outlet 114.
[0035] In one embodiment, the inlet baffle 111 is circular, has a through hole in the center, and is connected to the cylindrical section 112 .
[0036] In one embodiment, the horn section 113 is in a frustum shape, the small end is connected to the cylindrical section 112, a circular axial outlet 114 is opened at the bottom of the large end, and a circumferential outlet 115 is opened on the side wall of the large end, and a spiral baffle 120 is fixed inside the horn section 113, and its edge is completely in contact with the inner wall of the horn section 113. The horn section 113 is in a frustum shape, and the angle between the frustum generatrix and the normal line ranges from 20° to 40°.
[0037] In one embodiment, the interval between each turn of the spiral baffle 120 corresponding to the spiral line is 5-7 mm.
[0038] In one embodiment, the deceleration baffle 300 is circular, has a through hole in the center, has a 1 mm fillet between the baffle and the wall, and is fixed behind the spiral mixing device 100 .
[0039] In one embodiment, the rectifying baffle 400 is circular, has a plurality of evenly distributed circular holes in the center, and is fixed behind the deceleration baffle 300 .
[0040] The working principle of the spiral blending rectification structure is as follows:
[0041] Fluid from Figure 6 The external high-speed turbulent fluid flows in the direction of the arrow, and first enters the spiral blending device 100, which is fixed inside the rectifier housing 200 by welding. The external high-speed turbulent fluid is converged by the inlet baffle 111 and enters the spiral blending device 100 through the inlet flow channel. Under the action of the spiral baffle 120 in the figure, it rotates and flows in the first spiral flow channel 121. As the inner diameter of the spiral blending device 100 continues to increase, the fluid gradually slows down. Finally, the fluid is thrown out through the circumferential outlet 115. The edge of the circumferential outlet 115 is designed as follows Figure 4 , Figure 5 The 1mm fillet makes the fluid at the circumferential outlet 115 smoother. At this time, the axial velocity of the surrounding areas in the flow channel behind the spiral mixing device 100 is higher, while the central axial velocity is lower. Therefore, an axial outlet 114 is set at the end of the spiral mixing device 100, and part of the fluid flows out from the axial outlet 114 through the second spiral flow channel 122 to solve the problem of low central axial velocity. A part of the fluid in the inlet flow channel passes through the axial flow channel and the axial outlet 114 and the fluid with higher velocity around it converges to the center under the action of the deceleration baffle 300, and finally fully mixes with the fluid at the axial outlet 114 of the spiral mixing device 100 and enters the rectifying baffle 400. A 1mm fillet is also set at the axial outlet 114 to make the fluid flow out more smoothly. The fluid is initially rectified under the action of the rectifying baffle 400. At this time, most of the fluid is converted into a relatively smooth axial flow, and finally enters the cylindrical rectifier for secondary rectification, and finally the fluid is converted into a smooth flow. The deceleration baffle 300, the rectifying baffle 400, and the cylindrical rectifier are all fixed in the rectifier housing 200 by welding. In addition, a flange surface and bolt holes are designed on the rectifier housing 200 to facilitate the assembly and disassembly of the rectifier.
[0042] Those skilled in the art will readily appreciate other embodiments of the present application after considering the description and practicing the contents disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The description and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.
[0043] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.
Claims
1. A spiral mixing rectification structure, It is characterized in that It includes a rectifier shell and a spiral mixing device, a deceleration baffle, a rectifying baffle, and a cylindrical rectifier which are arranged in sequence in the rectifier shell along the flow channel direction. The spiral mixing device includes a shell and a spiral baffle. The shell includes an inlet baffle, a cylindrical section and a horn section. The inlet baffle is fixed at one end of the cylindrical section, the small-mouth end of the horn section is fixed at the other end of the cylindrical section, an axial outlet is opened at the bottom of the large-mouth end of the horn section, and a circumferential outlet is opened at the side wall of the large-mouth end; the spiral baffle is fixed in the horn section and forms a first spiral flow channel with the inner wall of the horn section, a second spiral flow channel is provided at the center of the spiral baffle, the inlets of the first spiral flow channel and the second spiral flow channel are connected to the cylindrical section, the outlet of the first spiral flow channel is connected to the circumferential outlet, and the outlet of the second spiral flow channel is connected to the axial outlet.
2. A spiral blending rectifier structure according to claim 1, It is characterized in that The inlet baffle is circular, with a through hole in the center, which is connected with the cylindrical section.
3. A spiral blending rectifier structure according to claim 1, It is characterized in that The horn section is in a frustum shape, and the angle between the frustum generatrix and the normal line ranges from 20° to 40°.
4. A spiral blending rectifier structure according to claim 1, It is characterized in that The interval between each turn of the spiral baffle corresponding to the spiral line is 5-7 mm.
5. The spiral blending rectifier structure according to claim 1, It is characterized in that The deceleration baffle is circular and has a through hole in the center.
6. The spiral blending rectifier structure according to claim 1, It is characterized in that The rectifying baffle is circular, and has a plurality of evenly arranged circular holes in the center.
7. A method for using a spiral blending rectification structure according to any one of claims 1 to 6, It is characterized in that include: The fluid first enters the spiral mixing device, and rotates and flows in the first spiral flow channel under the action of the spiral baffle. As the inner diameter of the spiral mixing device continues to increase, the fluid is gradually decelerated, and finally the fluid is thrown out through the circumferential outlet; the fluid flowing out of the circumferential outlet of the spiral mixing device converges to the center under the action of the deceleration baffle, and finally fully mixes with the fluid at the axial outlet of the spiral mixing device and enters the central through hole of the rectifying baffle; the fluid is initially rectified under the action of the rectifying baffle, and most of the fluid flow is converted into a relatively smooth axial flow, and finally enters the cylindrical rectifier for secondary rectification, and finally the fluid flow with large turbulence or eddy current is converted into a smooth flow, an axial outlet is opened at the end of the spiral mixing device, and part of the fluid flows out of the axial outlet through the second spiral flow channel, and the fluid flowing out of the axial outlet will be fully mixed with the surrounding fluid at the deceleration baffle, thereby improving the rectification effect.