A fluid flow straightener

Abstract

The utility model discloses a kind of fluid rectifying devices, it includes: first rectifying section, measurement section and second rectifying section, measurement section is connected between first rectifying section and second rectifying section, first rectifying section includes rectifying cavity and the first rectifying frame and second rectifying frame in rectifying cavity, second rectifying frame is sleeved in the outside of first rectifying frame, first rectifying frame and second rectifying frame are multiple, first rectifying frame one end close to measurement section and second rectifying frame one end close to measurement section flush, the length of adjacent two first rectifying frames is same, the length of second rectifying frame gradually shortens from inside to outside, the structure of second rectifying section and the structure of first rectifying section are same.Compared with prior art, in the utility model, first rectifying frame and second rectifying frame can effectively balance the fluid velocity from flow field center to boundary region, greatly improve the uniformity and stability of flow field, improve rectifying effect.Second, overall structure is simple, easy to make, disassembly is convenient, easy to clean.

Description

Technical Field

[0001] This utility model relates to the field of fluid rectification technology, and in particular to a fluid rectification device. Background Technology

[0002] The accuracy of most flow meters is affected by the fluid flow state. To obtain relatively accurate results, a relatively long straight pipe section is usually required before and after the flow meter, especially before it, to allow the medium flow to develop fully. In practical applications, due to space constraints, especially for some large-diameter pipes, sufficient straight pipe sections for flow stabilization cannot be provided before and after the flow meter. Relevant national standards and literature indicate that turbulence intensity can be quickly reduced and the required straight pipe section length shortened by installing flow conditioners. Therefore, installing flow conditioners before the flow meter or before pipes requiring flow rectification is extremely common in engineering applications. Flow conditioners can eliminate abnormal flows such as distorted velocity distribution and swirling flow, providing a standardized flow field and shortening the necessary straight pipe section length. However, existing flow conditioners, with their precision design and high-performance materials, increase costs. Their complex internal structure makes disassembly, inspection, and cleaning inconvenient, and also increases manufacturing costs. Utility Model Content

[0003] This invention provides a fluid rectification device to solve the problem of complex structure and high cost of existing flow regulators.

[0004] This utility model provides a fluid rectification device, including: a first rectification section, a measuring section, and a second rectification section. The measuring section is connected between the first rectification section and the second rectification section. The first rectification section includes a rectification cavity and a first rectification frame and a second rectification frame disposed within the rectification cavity. The second rectification frame is sleeved on the outside of the first rectification frame. There are multiple first rectification frames and multiple second rectification frames. The ends of the first rectification frames and the second rectification frames near the measuring section are flush. The lengths of two adjacent first rectification frames are the same. The length of the second rectification frame gradually decreases from the inside to the outside. The structure of the second rectification section is the same as the structure of the first rectification section.

[0005] Preferably, the measuring section includes a measuring cavity, in which multiple rectifier plates are fixed, the rectifier plates are arranged vertically, and the measuring cavity is provided with mounting seats, which are distributed obliquely along the horizontal plane.

[0006] Preferably, it also includes a fixing plate, wherein both the first rectifier frame and the second rectifier frame are fixed to the fixing plate.

[0007] Preferably, the fixing plate is cross-shaped, and the length of the fixing plate is the same as the length of the first rectifier frame.

[0008] Preferably, a positioning frame is fixed to the front end of the fixing plate, and a first step adapted to the positioning frame is provided at the front end of the rectifier cavity.

[0009] Preferably, the rear end of the rectifier cavity is provided with a second step, and the front end of the measuring cavity is engaged with the second step.

[0010] Preferably, the fixing plate of the second rectifier section extends into the measuring cavity and fits against the rectifier plate.

[0011] Preferably, the rear end of the measuring cavity is provided with a flange, and the flange is provided with a third step that is adapted to the positioning frame of the second rectifier section.

[0012] Preferably, the measuring cavity is divided into multiple measuring channels along the rectifier plate, and the measuring channels have the same width.

[0013] Preferably, the width between the first rectifier frames and the width between the second rectifier frames are both bmm, the width between the first rectifier frames and the second rectifier frames is bmm, and the width between the second rectifier frame and the rectifier cavity is bmm.

[0014] Compared with existing technologies, in this invention, the fluid flows sequentially into the first rectification section, the measuring section, and the second rectification section. The fluid undergoes rectification in the first and second rectification sections. Specifically, the first and second rectification frames can effectively balance the fluid velocity from the center of the flow field to the boundary region, significantly improving the uniformity and stability of the flow field and enhancing the rectification effect. Furthermore, the overall structure is simple, low-cost, easy to manufacture, convenient to disassemble, and easy to clean. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the first rectifier section of this utility model after the rectifier cavity is removed;

[0019] Figure 4 for Figure 3 Another structural diagram from a different perspective;

[0020] Figure 5 for Figure 3 The main view;

[0021] Figure 6 This is a schematic diagram of the measuring section of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the first rectifier section of this utility model.

[0023] Figure label:

[0024] 1. First rectifier section, 2. Measuring section, 3. Second rectifier section, 11. Rectifier cavity, 12. First rectifier frame, 13. Second rectifier frame, 14. Fixing plate, 15. Positioning frame, 21. Measuring cavity, 22. Rectifier plate, 23. Mounting base, 24. Flange, 111. First step, 112. Second step, 211. Third step, 100. Measuring flow channel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] See attached document Figure 1 and attached Figure 2 This embodiment provides a fluid rectification device, including: a first rectification section 1, a measuring section 2, and a second rectification section 3. The measuring section 2 is connected between the first rectification section 1 and the second rectification section 3. (Refer to the attached diagram.) Figure 3 The first rectifier section 1 includes a rectifier cavity 11 and a first rectifier frame 12 and a second rectifier frame 13 disposed within the rectifier cavity 11. The second rectifier frame 13 is sleeved on the outside of the first rectifier frame 12. There are multiple first rectifier frames 12 and second rectifier frames 13. The ends of the first rectifier frames 12 and second rectifier frames 13 near the measuring section 2 are flush. (Refer to the attached diagram.) Figure 5The two adjacent first rectifier frames 12 have the same length, while the length of the second rectifier frame 13 gradually decreases from the inside to the outside. The structure of the second rectifier section 3 is the same as that of the first rectifier section 1. In this invention, fluid flows sequentially into the first rectifier section 1, the measuring section 2, and the second rectifier section 3. The fluid is rectified in the first rectifier section 1 and the second rectifier section 3. Specifically, the first rectifier frame 12 and the second rectifier frame 13 can effectively balance the fluid velocity from the center of the flow field to the boundary region, significantly improving the uniformity and stability of the flow field and enhancing the rectification effect. Secondly, the first rectifier frame 12 and the second rectifier frame 13 can be circular or rectangular, making them suitable for a wide range of scenarios. Thirdly, the overall structure is simple and easy to manufacture.

[0027] Specifically, the cross-section of the rectifier cavity 11 is rectangular.

[0028] In another embodiment of this utility model, the axial center line of the first rectifier frame 12 and the axial center line of the second rectifier frame 13 are collinear, and the axial center line of the first rectifier frame 12 is collinear with the axial center line of the rectifier cavity 11.

[0029] As another embodiment of this utility model: refer to the appendix Figure 6 The measuring section 2 includes a measuring cavity 21, within which multiple rectifier plates 22 are fixed. The rectifier plates 22 are vertically arranged. Mounting seats 23 are provided on the measuring cavity 21, inclined along a horizontal plane. There are two mounting seats 23, located on the upper and lower sides of the measuring cavity 21 respectively. Part of the rectifier plate 22 passes between the two mounting seats 23. The mounting seats 23 are used to mount ultrasonic transducers. The ultrasonic transducer has a circular disc structure, and during operation, the ultrasonic waves completely pass through the area where the rectifier plates 22 are located. In this structural design, when fluid enters the measuring cavity 21, the fluid continues to be rectified by the rectifier plates 22, thus ensuring that the fluid flowing out of the rectifier is uniform and has a stable flow velocity. Specifically, there are 22 rectifier plates 22, and each rectifier plate 22 is a rectangular thin plate.

[0030] As another embodiment of this utility model: refer to the appendix Figure 4 This embodiment also includes a fixing plate 14. The first rectifier frame 12 and the second rectifier frame 13 are both fixed to the fixing plate 14 and then installed on the rectifier cavity 11 through the fixing plate 14.

[0031] As another embodiment of the present invention: the fixing plate 14 is cross-shaped, the length of the fixing plate 14 is the same as the length of the first rectifier frame 12, and the axial center line of the fixing plate 14 is collinear with the axial center line of the first rectifier frame 12.

[0032] Specifically, the first rectifier frame 12 has 4 modules, and the second rectifier frame 13 has 3 modules.

[0033] As another embodiment of the present invention: a positioning frame 15 is fixed to the front end of the fixing plate 14, and a first step 111 adapted to the positioning frame 15 is provided at the front end of the rectifier cavity 11. The first rectifier frame 12 and the second rectifier frame 13 are inserted into the rectifier cavity 11, and then the positioning frame 15 is stuck on the first step 111. The front end of the positioning frame 15 is flush with the front end of the rectifier cavity 11.

[0034] As another embodiment of this utility model: refer to the appendix Figure 7 The rear end of the rectifier cavity 11 is provided with a second step 112, and the front end of the measuring cavity 21 is inserted into the second step 112 to complete the installation of the first rectifier section 1 and the measuring section 2.

[0035] Specifically, a certain distance is provided between the first rectifier frame 12 of the first rectifier section 1 and the measuring cavity 21.

[0036] In another embodiment of this utility model, the fixing plate 14 of the second rectifier section 3 extends into the measuring cavity 21, that is, the measuring section 2 and the second rectifier section 3 share the measuring cavity 21 as the outer shell. Specifically, a certain distance is provided between the first rectifier frame 12 of the second rectifier section 3 and the rectifier plate 22.

[0037] As another embodiment of the present invention: the rear end of the measuring cavity 21 is provided with a flange 24, the flange 24 is provided with a third step 211 that is adapted to the positioning frame 15 of the second rectifier section 3, the positioning frame 15 of the second rectifier section 3 is inserted into the third step 211, and the rear end of the positioning frame 15 of the second rectifier section 3 is flush with the rear end of the flange 24.

[0038] As another embodiment of this utility model: the measuring cavity 21 is divided into multiple measuring channels 100 along the rectifier plate 22, and the measuring channels 100 have the same width.

[0039] In another embodiment of this utility model: the width between the first rectifier frames 12 and the width between the second rectifier frames 13 are both bmm, the width between the first rectifier frames 12 and the second rectifier frames 13 is bmm, and the width between the second rectifier frame 13 and the rectifier cavity 11 is bmm.

[0040] In use, the rectifier is connected to other pipes or components via flange 24. Fluid enters the first rectifier frame 12 and the second rectifier frame 13 for rectification, effectively balancing the incoming flow velocity from the center to the boundary region of the flow field, significantly improving the uniformity and stability of the flow field, and enhancing the rectification effect. When the fluid enters the measuring section 2 and the second rectifier section 3, it continues to be rectified by the rectifier plate 22, the first rectifier frame 12, and the second rectifier frame 13, thereby ensuring a uniform flow field and stable flow velocity for the fluid exiting the rectifier.

[0041] In the ultrasonic flow channel experiment, Table 1 below shows the data without the rectifier device of this embodiment, and Table 2 below shows the data with the rectifier device of this embodiment. As can be seen from the measurement data, the repeatability of the data measured after rectification at the same measurement point is much smaller than that before rectification.

[0042] Table 1. Ultrasonic measurement data before rectification.

[0043]

[0044]

[0045] Table 2. Ultrasonic measurement data after rectification.

[0046]

[0047]

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fluid rectification device, characterized in that, include: The system comprises a first rectification section, a measurement section, and a second rectification section. The measurement section is connected between the first rectification section and the second rectification section. The first rectification section includes a rectification cavity and a first rectification frame and a second rectification frame disposed within the rectification cavity. The second rectification frame is sleeved on the outside of the first rectification frame. There are multiple first rectification frames and multiple second rectification frames. The ends of the first rectification frames and the second rectification frames near the measurement section are flush. The lengths of two adjacent first rectification frames are the same. The length of the second rectification frame gradually decreases from the inside to the outside. The structure of the second rectification section is the same as that of the first rectification section.

2. The fluid rectification device according to claim 1, characterized in that, The measuring section includes a measuring cavity, in which multiple rectifier plates are fixed. The rectifier plates are arranged vertically, and the measuring cavity is provided with mounting seats that are distributed obliquely along the horizontal plane.

3. The fluid rectification device according to claim 2, characterized in that, It also includes a fixing plate, and both the first rectifier frame and the second rectifier frame are fixed to the fixing plate.

4. The fluid rectification device according to claim 3, characterized in that, The fixing plate is cross-shaped, and the length of the fixing plate is the same as the length of the first rectifier frame.

5. The fluid rectification device according to claim 4, characterized in that, The front end of the fixed plate is fixed with a positioning frame, and the front end of the rectifier cavity is provided with a first step that is adapted to the positioning frame.

6. The fluid rectification device according to claim 5, characterized in that, The rear end of the rectifier cavity is provided with a second step, and the front end of the measuring cavity is engaged with the second step.

7. The fluid rectification device according to claim 6, characterized in that, The fixing plate of the second rectifier section extends into the measuring cavity and fits against the rectifier plate.

8. The fluid rectification device according to claim 7, characterized in that, The measuring cavity is provided with a flange at its rear end, and the flange is provided with a third step that is adapted to the positioning frame of the second rectifier section.

9. The fluid rectification device according to claim 8, characterized in that, The measuring cavity is divided into multiple measuring channels along the rectifier plate, and the measuring channels have the same width.

10. The fluid rectification device according to claim 9, characterized in that, The width between the first rectifier frames and the width between the second rectifier frames are both bmm, the width between the first rectifier frames and the second rectifier frames is bmm, and the width between the second rectifier frame and the rectifier cavity is bmm.

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