An insertion type gas ultrasonic flowmeter rectifier

Abstract

The present invention relates to the technical field of ultrasonic flowmeter rectifiers, and specifically to an insert-type gas ultrasonic flowmeter rectifier, comprising a shell, an ultrasonic flowmeter being provided on the surface of the shell, a mounting mechanism being provided at the upper end of the shell, a second fixed block being fixedly installed at the inner center of the shell, a plurality of connecting grooves for guiding airflow being provided inside the second fixed block, a conical groove being provided inside the second fixed block, a second conical block being fitted in the conical groove in the second fixed block, a conical auger being provided on the surface of the second conical block, a power mechanism being provided inside the shell, a first rectifier being provided inside the second fixed block, a second rectifier being provided at one end of the second fixed block away from the power mechanism, and a second fixed disk being fixedly connected to the inner surface of the shell; the airflow can be evenly dispersed into the plurality of connecting grooves through the conical auger, and the airflow can eliminate eddy currents by being rectified through the plurality of connecting grooves in the second fixed block.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic flowmeter rectifiers, in particular to an insertion type gas ultrasonic flowmeter rectifier. Background Art

[0002] A rectifier is a fluid dynamics optimization device designed specifically for insertable gas ultrasonic flowmeters. Its core function is to adjust the irregular fluid movement in the pipeline into a stable and uniform flow state through a specific structure, eliminating fluid disturbances caused by upstream pipe fittings (such as valves, elbows, and reducers), ensuring that the fluid presents a fully developed laminar or near-laminar state in the measuring section. By reducing eddy currents and uneven velocity distribution, the impact of fluid disturbances on ultrasonic propagation time difference measurements is reduced, thereby improving measurement accuracy (simulation experiments show that the optimized rectifier can control the measurement error within ±0.3%). In the event of a transient overload inside the flowmeter, the rectifier can disperse the fluid impact force and protect the sensor and measuring elements from damage.

[0003] The rectifier of the existing insertion-type gas ultrasonic flowmeter adopts a honeycomb structure and fan blade rectification. The honeycomb structure divides the fluid into multiple direct currents, and uses the regular hexagonal cross-section of the honeycomb channel to reduce the generation of vortices. In theory, it can significantly reduce the flow field disturbance, guide the fluid flow direction through the inclination angle of the blade, correct the flow deflection and distortion caused by upstream bends, reducers and other resistance parts, and further stabilize the flow state. The main function of the fan blade is to guide the direction of the airflow, but the ability to eliminate the rotating gas vortex (like the vortex in the water flow) is limited. Behind complex structures such as multiple bends and reducers, the gas rushes around to form stubborn vortices. The fan blades can only "guide" but not completely "eliminate" them. These vortices will cause the ultrasonic signal to "take a detour", resulting in inaccurate measurement. The eddy currents will scatter the ultrasonic signal, causing large measurement fluctuations.

[0004] The fan blades in the rectifier of the existing insert-type gas ultrasonic flowmeter have limited ability to eliminate axial vortices, and the residual vortex intensity may still affect the measurement accuracy. In a strongly disturbed flow field (such as multiple bends and downstream of reducers), the rectifier may not be able to completely eliminate vortices and secondary flows, causing the flowmeter to still be affected by flow field instability and reduced measurement accuracy. In a strongly disturbed flow field such as multiple bends, reducers or pump outlets, the rectifier may not be able to completely eliminate vortices and secondary flows. Eddies will scatter ultrasonic signals, causing fluctuations in propagation time difference measurements. Using only a honeycomb structure combined with fan blades to rectify the airflow will cause residual vortices to remain locally, resulting in vortices still existing in the rectified airflow, and unstable airflow and different flow rates will cause inaccurate measurements of the gas ultrasonic flowmeter. Eddies and flow rate changes will scatter ultrasonic signals. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides an insertion-type gas ultrasonic flowmeter rectifier.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an insertable gas ultrasonic flowmeter rectifier, comprising a shell, an ultrasonic flowmeter is provided on the surface of the shell, and a mounting mechanism for mounting the rectifier in a pipeline is provided at the upper end of the shell, a second fixed block is fixedly installed at the inner center of the shell, a plurality of connecting grooves for guiding airflow are provided inside the second fixed block, a conical groove is provided in the second fixed block, a second conical block is matched in the conical groove in the second fixed block, a conical auger is provided on the surface of the second conical block, a power mechanism for driving the auger is provided inside the shell, a first rectifier mechanism for uniformly dispersing the airflow is provided inside the second fixed block, a second rectifier mechanism for rectifying the airflow that is not uniformly dispersed by the auger is provided at the end of the second fixed block away from the power mechanism, and a second fixed disk is fixedly connected to the inner surface of the shell.

[0007] Preferably, the mounting mechanism includes a first fixed block, the lower end of the first fixed block is fixedly connected to the outer surface of the shell, the internal rotation of the first fixed block is connected to a rotating shaft, the first fixed block is elastically connected to the rotating shaft through a torsion spring, the surface of the rotating shaft is fixedly connected to a movable block, the surface of the movable block is fixedly connected to a baffle, and the baffle is in contact with the surface of the first fixed block.

[0008] Preferably, the mounting mechanism further comprises a connecting rod, the upper end of the movable block is fixedly connected to the connecting rod, the surface of the connecting rod is fixedly connected to a flange, the interior of the flange is engaged with bolts, and the upper end of the connecting rod is fixedly connected to a display.

[0009] Preferably, the power mechanism includes a bearing, the outer ring of the bearing is fixedly connected to the inner surface of the housing, the inner ring of the bearing is fixedly connected to a transmission shaft, and the surface of the transmission shaft is fixedly connected to the first fan blade.

[0010] Preferably, the power mechanism further includes a vortex disk, and the surface of the transmission shaft is also fixedly connected with the vortex disk.

[0011] Preferably, the first rectifying mechanism includes a first conical block, the center of which is fixedly connected to the surface of the transmission shaft, one end of the first conical block is fixedly connected to a second conical block, and the auger is infinitely close to but not fitted with the second fixed block.

[0012] Preferably, the second rectifying mechanism includes a sleeve, one end of the sleeve is fixedly connected to the second fixed block, a second fan blade is provided inside the sleeve, and the second fan blade is fixedly connected to the transmission shaft.

[0013] Preferably, the second rectifying mechanism further includes a first fixed disk, the inner surface of the sleeve is fixedly connected to the first fixed disk, and the first fixed disk is provided with a plurality of small holes inside.

[0014] Preferably, a plurality of honeycomb holes are provided inside the second fixed disk.

[0015] Beneficial effects of the present invention:

[0016] The insertable gas ultrasonic flowmeter rectifier described in the present invention can rotate under the drive of the airflow through the first fan blade. The rotation of the first fan blade driven by the airflow will generate power to drive the transmission shaft to rotate. The rotation of the transmission shaft drives the vortex disk to guide the airflow to the inner surroundings of the outer shell, making it convenient for the airflow to enter between the second conical block and the second fixed block for rectification.

[0017] The insertable gas ultrasonic flowmeter rectifier described in the present invention can evenly disperse the airflow into several connecting grooves through the setting of a conical auger. The end of the second fixed block away from the first conical block is circular and has several connecting grooves evenly arranged. The airflow is guided by the several connecting grooves and discharged evenly at the end away from the first conical block. The airflow is rectified by the several connecting grooves in the second fixed block to eliminate eddy currents, thereby achieving the effect of rectification.

[0018] The insertable gas ultrasonic flowmeter rectifier described in the present invention will drive the second fan blade to rotate when the transmission shaft rotates. The airflow at the end center of the auger will enter the sleeve instead of the connecting groove. The rotation of the second fan blade will rectify the airflow in the sleeve. A first fixed disk is provided at the end of the sleeve. Several circular holes are provided inside the first fixed disk. The diameter of the holes is the same as the diameter of the connecting groove. After rectification by the holes and the connecting groove, the airflow has become very stable. After rectification by the holes and the connecting groove, the airflow will pass through the honeycomb holes in the second fixed disk for further rectification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure between the housing and the ultrasonic flowmeter;

[0022] Figure 3 It is a schematic diagram of the connection structure between the movable block and the baffle;

[0023] Figure 4 Schematic diagram of the connection structure between the first fixed block and the rotating shaft;

[0024] Figure 5 Schematic diagram of the connection structure between the transmission shaft and the first tapered block;

[0025] Figure 6 This is a schematic diagram of the connection structure between the second cone block and the auger;

[0026] Figure 7 Schematic diagram of the connection slot structure;

[0027] Figure 8 for Figure 7 The enlarged structural diagram of part A is shown.

[0028] In the figure: 100, housing; 200, ultrasonic flowmeter; 300, mounting mechanism; 301, first fixed block; 302, rotating shaft; 303, movable block; 3031, baffle; 304, connecting rod; 305, flange; 306, bolt; 307, display; 400, power mechanism; 401, bearing; 402, transmission shaft; 403, first blade; 404, vortex disk; 500, first rectifying mechanism; 501, first conical block; 502, second conical block; 503, auger; 504, second fixed block; 505, connecting groove; 600, second rectifying mechanism; 601, sleeve; 602, second blade; 603, first fixed disk; 604, small hole; 700, second fixed disk; 701, honeycomb hole. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] like Figures 1-8 As shown, the present invention relates to an insertable gas ultrasonic flowmeter rectifier, comprising a housing 100, an ultrasonic flowmeter 200 being provided on the surface of the housing 100, a mounting mechanism 300 for mounting the rectifier in a pipeline being provided at the upper end of the housing 100, a second fixing block 504 being fixedly mounted at the inner center of the housing 100, a plurality of connecting grooves 505 for guiding airflow being provided inside the second fixing block 504, a conical groove being provided inside the second fixing block 504, and a conical groove in the second fixing block 504 being fitted with a There is a second conical block 502, the surface of which is provided with a conical auger 503, the interior of the outer shell 100 is provided with a power mechanism 400 for driving the auger 503, the interior of the second fixed block 504 is provided with a first rectifying mechanism 500 for evenly dispersing the airflow, and the end of the second fixed block 504 away from the power mechanism 400 is provided with a second rectifying mechanism 600 for rectifying the airflow that is not evenly dispersed by the auger 503, and the inner surface of the outer shell 100 is fixedly connected to a second fixed disk 700.

[0031] The mounting mechanism 300 includes a first fixed block 301, the lower end of the first fixed block 301 is fixedly connected to the outer surface of the housing 100, the interior of the first fixed block 301 is rotatably connected to a rotating shaft 302, the first fixed block 301 is elastically connected to the rotating shaft 302 by a torsion spring, the surface of the rotating shaft 302 is fixedly connected to a movable block 303, the surface of the movable block 303 is fixedly connected to a baffle 3031, the baffle 3031 is fitted with the surface of the first fixed block 301, the upper end of the movable block 303 is fixedly connected to a connecting rod 304, the surface of the connecting rod 304 is fixedly connected to a flange 305, the interior of the flange 305 is engaged with a bolt 306, and the upper end of the connecting rod 304 is fixedly connected to a display 307; first, the housing 100 is inserted into the pipe through the flange 305 at the opening on the pipe, and the housing 100 is in the shape of a round tube, and then The flange 305 and the bolt 306 connect the housing 100 to the pipeline. One end of the first fan blade 403 in the housing 100 is the air inlet end of the airflow, and one end of the ultrasonic flowmeter 200 in the housing 100 is the air outlet end of the airflow. The ultrasonic flowmeter 200 measures the rectified airflow. The first fixed block 301 and the rotating shaft 302 are elastically connected by a torsion spring. When the rectifier is placed in the pipeline, the connecting rod 304 can be folded toward one end of the first fan blade 403 in the housing 100. In this process, the torsion spring between the first fixed block 301 and the rotating shaft 302 will be compressed. The function of the baffle 3031 on the movable block 303 is to prevent the housing 100 from rotating under the action of the airflow.

[0032] The power mechanism 400 includes a bearing 401, the outer ring of the bearing 401 is fixedly connected to the inner surface of the shell 100, the inner ring of the bearing 401 is fixedly connected to a transmission shaft 402, the surface of the transmission shaft 402 is fixedly connected to a first fan blade 403, and the surface of the transmission shaft 402 is also fixedly connected to a vortex disk 404; at this time, the flowing gas in the pipeline will drive the first fan blade 403 to rotate, the rotation of the first fan blade 403 will drive the transmission shaft 402 to rotate, the rotation of the transmission shaft 402 will drive the vortex disk 404 to rotate, and the rotation of the vortex disk 404 will guide the airflow in the shell 100 to the surroundings; the first fan blade 403 can be rotated by the airflow, and the rotation of the first fan blade 403 driven by the airflow will generate power to drive the transmission shaft 402 to rotate, and the rotation of the transmission shaft 402 will drive the vortex disk 404 to guide the airflow to the surroundings inside the shell 100, so that the airflow enters the second conical block 502 and the second fixed block 504 for rectification.

[0033] The first rectifying mechanism 500 includes a first conical block 501, the center of the first conical block 501 is fixedly connected to the surface of the transmission shaft 402, one end of the first conical block 501 is fixedly connected to the second conical block 502, and the auger 503 is infinitely close to the second fixed block 504 but not in contact with it; when the transmission shaft 402 rotates, the first conical block 501 is driven to rotate, the first conical block 501 is driven to rotate, the second conical block 502 is driven to rotate, the second conical block 502 is driven to rotate, the auger 503 is driven to rotate along the rotation of the airflow, and the airflow is driven to rotate around the second fixed block 504, so that the airflow rotates around the second fixed block 504 and evenly disperses the airflow into the connecting groove 505; the setting is adopted. The tip of the first conical block 501 is facing the airflow, which can further guide the airflow to the inner periphery of the housing 100. The airflow enters the second fixed block 504 from the inner periphery of the housing 100. A conical groove is provided inside the second fixed block 504. The conical groove inside the second fixed block 504 matches the second conical block 502. An auger 503 is fixedly provided on the outer surface of the second conical block 502. The auger 503 can guide the airflow to rotate between the second conical block 502 and the second fixed block 504. The airflow flows around the auger 503 between the second conical block 502 and the second fixed block 504. The auger 503 is infinitely close to the second fixed block 504 but does not fit together. The airflow flows around the auger 503 and enters The second fixed block 504 has a plurality of connecting grooves 505 arranged in the conical groove inside the second fixed block 504. The plurality of connecting grooves 505 are of the same size. The airflow passes through the auger 503 and flows between the second conical block 502 and the second fixed block 504. The airflow will continuously enter the plurality of connecting grooves 505. The airflow can be evenly dispersed into the plurality of connecting grooves 505 by the setting of the conical auger 503. The cross-sectional view of the plurality of connecting grooves 505 is arc-shaped. The connecting groove 505 guides the airflow in the conical groove of the second fixed block 504 to be discharged at the end away from the first conical block 501. The end of the second fixed block 504 away from the first conical block 501 is circular and evenly arranged with a plurality of connecting grooves 505. The airflow passes through the plurality of connecting grooves 505. The airflow is guided by the connecting grooves 505 and discharged evenly at the end away from the first conical block 501. The airflow is in the several connecting grooves 505 set on the surface of the conical groove in the second fixed block 504. The airflow is rectified by the several connecting grooves 505 in the second fixed block 504 to eliminate eddy currents. The airflow can be evenly dispersed into the several connecting grooves 505 through the setting of the conical auger 503. The end of the second fixed block 504 away from the first conical block 501 is circular and has several connecting grooves 505 evenly arranged. The airflow is guided by the several connecting grooves 505 and discharged evenly at the end away from the first conical block 501. The airflow is rectified by the several connecting grooves 505 in the second fixed block 504 to eliminate eddy currents, thereby achieving the effect of rectification.

[0034] The second rectifying mechanism 600 includes a sleeve 601, one end of which is fixedly connected to the second fixed block 504, and a second fan blade 602 is provided inside the sleeve 601, and the second fan blade 602 is fixedly connected to the transmission shaft 402, and a first fixed disk 603 is fixedly connected to the inner surface of the sleeve 601, and a plurality of small holes 604 are opened inside the first fixed disk 603; when the transmission shaft 402 rotates, the second fan blade 602 is driven to rotate, and the airflow at the end center of the auger 503 that does not enter the connecting groove 505 will enter the sleeve 601, and the rotation of the second fan blade 602 will rectify the airflow in the sleeve 601, and a first fixed disk 603 is provided at the end of the sleeve 601, and a plurality of circular small holes 604 are provided inside the first fixed disk 603, and the diameter of the small hole 604 is the same as the diameter of the connecting groove 505. After rectification by the small hole 604 and the connecting groove 505, the airflow has become very stable.

[0035] Several honeycomb holes 701 are provided inside the second fixed disk 700. The airflow rectified by the small holes 604 and the connecting grooves 505 is further rectified by the honeycomb holes 701 in the second fixed disk 700, so that the airflow reaches a stable airflow state after further rectification through the honeycomb holes 701. At this time, the stable airflow is measured by an ultrasonic meter provided at the end of the housing 100. The honeycomb structure significantly improves the measurement accuracy and flow field stability of the insertion-type gas ultrasonic flowmeter 200 by dividing the fluid, suppressing vortices, and homogenizing the flow field.

[0036] Working principle: When the present invention is in use, the outer shell 100 is first inserted into the pipeline through the flange 305 at the opening on the pipeline. The outer shell 100 is in the shape of a circular tube, and then the outer shell 100 is connected to the pipeline through the flange 305 and the bolt 306. One end of the first fan blade 403 in the outer shell 100 is the air inlet end of the airflow, and one end of the ultrasonic flowmeter 200 in the outer shell 100 is the air outlet end of the airflow. The ultrasonic flowmeter 200 measures the rectified airflow. The first fixed block 301 and the rotating shaft 302 are elastically connected by a torsion spring. When the rectifier is placed in the pipeline, the connecting rod 304 can be folded toward one end of the first fan blade 403 in the outer shell 100. In this process, the torsion spring between the first fixed block 301 and the rotating shaft 302 will be compressed. The function of the baffle 3031 on the movable block 303 is to prevent the outer shell 100 from rotating under the action of the airflow.

[0037] At this time, the flowing gas in the pipeline will drive the first fan blade 403 to rotate, and the rotation of the first fan blade 403 will drive the transmission shaft 402 to rotate, and the rotation of the transmission shaft 402 will drive the vortex disk 404 to rotate, and the rotation of the vortex disk 404 will guide the airflow in the outer shell 100 to the surroundings; the first fan blade 403 can be rotated by the airflow, and the rotation of the first fan blade 403 driven by the airflow will generate power to drive the transmission shaft 402 to rotate. The rotation of the transmission shaft 402 drives the vortex disk 404 to guide the airflow to the surroundings inside the outer shell 100, so as to facilitate the airflow to enter the second conical block 502 and the second fixed block 504 for rectification.

[0038] When the transmission shaft 402 rotates, it will drive the first conical block 501 to rotate, and the rotation of the first conical block 501 will drive the second conical block 502 to rotate, and the rotation of the second conical block 502 will drive the auger 503 to rotate, and the rotation of the auger 503 will follow the rotation of the airflow, which will drive the airflow to rotate around the second fixed block 504, allowing the airflow to rotate around the second fixed block 504 and evenly disperse the airflow into the connecting groove 505; the tip of the first conical block 501 is set to face the airflow, which can further guide the airflow to the inner periphery of the housing 100, and the airflow enters the second fixed block 504 around the inner periphery of the housing 100, and the second fixed block 504 is provided with a conical The conical groove inside the second fixed block 504 matches the second conical block 502, and an auger 503 is fixedly provided on the outer surface of the second conical block 502. The auger 503 can guide the airflow to rotate between the second conical block 502 and the second fixed block 504. The airflow flows around the auger 503 between the second conical block 502 and the second fixed block 504. The auger 503 and the second fixed block 504 are infinitely close but not fitted. The airflow flows around the auger 503 and enters the second fixed block 504. Several connecting grooves 505 are provided in the conical groove inside the second fixed block 504, and the sizes of the several connecting grooves 505 are the same. , the airflow passes around the auger 503 and flows between the second conical block 502 and the second fixed block 504, and the airflow will continuously enter the several connecting grooves 505. The setting of the conical auger 503 can evenly disperse the airflow into the several connecting grooves 505. The cross-sectional view of the several connecting grooves 505 is arc-shaped. The connecting groove 505 guides the airflow in the conical groove of the second fixed block 504 to be discharged at the end away from the first conical block 501. The end of the second fixed block 504 away from the first conical block 501 is circular and evenly arranged with several connecting grooves 505. The airflow is evenly distributed at the end away from the first conical block 501 after being guided by the several connecting grooves 505. The airflow is discharged in several connecting grooves 505 provided on the surface of the conical groove in the second fixed block 504. The airflow is rectified by the several connecting grooves 505 in the second fixed block 504 to eliminate eddy currents. The airflow can be evenly dispersed into the several connecting grooves 505 by the setting of the conical auger 503. The end of the second fixed block 504 away from the first conical block 501 is circular and evenly arranged with several connecting grooves 505. The airflow is guided by the several connecting grooves 505 and evenly discharged at the end away from the first conical block 501. The airflow is rectified by the several connecting grooves 505 in the second fixed block 504 to eliminate eddy currents, thereby achieving the effect of rectification.

[0039] When the transmission shaft 402 rotates, the second fan blade 602 will be driven to rotate. The airflow at the end center of the auger 503 that does not enter the connecting groove 505 will enter the sleeve 601. The rotation of the second fan blade 602 will rectify the airflow in the sleeve 601. A first fixed disk 603 is provided at the end of the sleeve 601. Several circular holes 604 are provided inside the first fixed disk 603. The diameter of the hole 604 is the same as the diameter of the connecting groove 505. After rectification by the hole 604 and the connecting groove 505, the airflow has become very stable.

[0040] The airflow rectified by the small holes 604 and the connecting grooves 505 will be further rectified by the honeycomb holes 701 in the second fixed disk 700, so that the airflow reaches a stable airflow state after further rectification through the honeycomb holes 701. At this time, the stable airflow is measured by the ultrasonic meter set at the end of the shell 100. The honeycomb structure significantly improves the measurement accuracy and flow field stability of the insertion-type gas ultrasonic flowmeter 200 by dividing the fluid, suppressing vortexes and homogenizing the flow field.

[0041] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insertion-type gas ultrasonic flowmeter rectifier, comprising a housing (100), an ultrasonic flowmeter (200) being provided on a surface of the housing (100), characterized in that: The upper end of the housing (100) is provided with a mounting mechanism (300) for mounting the rectifier in a pipe, a second fixing block (504) is fixedly mounted at the inner center of the housing (100), a plurality of connecting grooves (505) for guiding airflow are provided inside the second fixing block (504), a conical groove is provided inside the second fixing block (504), a second conical block (502) is fitted in the conical groove inside the second fixing block (504), and a conical surface of the second conical block (502) is provided. An auger (503), a power mechanism (400) for driving the auger (503) is provided inside the housing (100), a first rectifying mechanism (500) for uniformly dispersing the airflow is provided inside the second fixed block (504), a second rectifying mechanism (600) for rectifying the unevenly dispersed airflow of the auger (503) is provided at one end of the second fixed block (504) away from the power mechanism (400), and a second fixed disk (700) is fixedly connected to the inner surface of the housing (100); The first rectifying mechanism (500) comprises a first conical block (501), the center of the first conical block (501) is fixedly connected to the surface of the transmission shaft (402), one end of the first conical block (501) is fixedly connected to a second conical block (502), and the auger (503) and the second fixed block (504) are infinitely close but not in contact; The second rectifying mechanism (600) comprises a sleeve (601), one end of the sleeve (601) is fixedly connected to the second fixing block (504), a second fan blade (602) is provided inside the sleeve (601), and the second fan blade (602) is fixedly connected to the transmission shaft (402); The second rectifying mechanism (600) further comprises a first fixed disk (603), the inner surface of the sleeve (601) is fixedly connected to the first fixed disk (603), and a plurality of small holes (604) are provided inside the first fixed disk (603).

2. The plug-in type gas ultrasonic flowmeter rectifier according to claim 1, characterized in that: The mounting mechanism (300) comprises a first fixed block (301), the lower end of the first fixed block (301) being fixedly connected to the outer surface of the housing (100), the interior of the first fixed block (301) being rotatably connected to a rotating shaft (302), the first fixed block (301) being elastically connected to the rotating shaft (302) via a torsion spring, a movable block (303) being fixedly connected to the surface of the rotating shaft (302), a baffle (3031) being fixedly connected to the surface of the movable block (303), and the baffle (3031) being in contact with the surface of the first fixed block (301).

3. The plug-in type gas ultrasonic flowmeter rectifier according to claim 2, characterized in that: The mounting mechanism (300) further comprises a connecting rod (304), the upper end of the movable block (303) being fixedly connected to the connecting rod (304), the surface of the connecting rod (304) being fixedly connected to a flange (305), the interior of the flange (305) being engaged with a bolt (306), and the upper end of the connecting rod (304) being fixedly connected to a display (307).

4. The insertion type gas ultrasonic flowmeter rectifier according to claim 3, characterized in that: The power mechanism (400) comprises a bearing (401), an outer ring of the bearing (401) being fixedly connected to the inner surface of the housing (100), an inner ring of the bearing (401) being fixedly connected to a transmission shaft (402), and a surface of the transmission shaft (402) being fixedly connected to a first fan blade (403).

5. The insertion type gas ultrasonic flowmeter rectifier according to claim 4, characterized in that: The power mechanism (400) further comprises a vortex disk (404), and the surface of the transmission shaft (402) is also fixedly connected to the vortex disk (404).

6. The insertion type gas ultrasonic flow meter rectifier according to claim 1, characterized in that: A plurality of honeycomb holes (701) are provided inside the second fixed disk (700).

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