Simple wind tunnel device for testing performance of flowmeter

Abstract

The utility model discloses a simple and easy wind tunnel device of detecting flowmeter performance belongs to flowmeter detection technical field, including the shell, the shell one end is equipped with the adjusting door, the adjusting door one side fixed mounting has the soft connecting pipe, the soft connecting pipe other end fixed mounting has the fan, be equipped with the standard flowmeter in the shell, be equipped with the toothed plate in the groove of shell top, in the utility model, when detecting flowmeter, can insert flowmeter from the shell top to the shell inside, and the flange plate of sliding mounting seat and flowmeter is close to to the shell top, thereby through the fixed flange plate of pushing down pressure lever, and in the process of fixing, can make it can fix different flowmeter flange plate through the position of adjusting mounting seat, thereby need not replace the connecting piece and then reduce the influence of wind tunnel detection.

Description

Technical Field

[0001] This utility model belongs to the field of flow meter testing technology, and in particular relates to a simple wind tunnel device for testing the performance of flow meters. Background Technology

[0002] If we want to evaluate the metering performance of a flow meter, or conduct strength and stability tests on its structure, the commonly used equipment is a wind tunnel. A wind tunnel is an indispensable experimental device in modern aerodynamics research and engineering applications. It allows a stationary model to "experience" the effects of movement in a real airflow by artificially generating and precisely controlling airflow. Specifically used in the environmental measurement industry, it can both measure and compare the metering performance of a flow meter, and test the strength and stability of the flow meter's structure in a simulated flow field.

[0003] Because wind tunnels are widely used and serve as a crucial data source and foundation for many industries, there is no dedicated wind tunnel specifically for testing flow meter performance. Furthermore, existing wind tunnels cannot be easily modified in terms of connectors, and the installation structure may need to be frequently adjusted for different types of flow meters. To address these issues, there is an urgent need for a simple wind tunnel device for testing flow meter performance. Utility Model Content

[0004] The purpose of this invention is to provide a simple wind tunnel device for testing the performance of flow meters, in order to solve the problem that the installation structure may need to be frequently adjusted for different types of flow meters.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a simple wind tunnel device for testing the performance of a flow meter, comprising a housing, an adjusting door at one end of the housing, a flexible connecting pipe fixedly installed on one side of the adjusting door, a fan fixedly installed at the other end of the flexible connecting pipe, a standard flow meter inside the housing, and a toothed plate in a groove opened at the top of the housing; a guide assembly located inside the housing and connected to the housing; and a fixing assembly located in the groove opened at the top of the housing and slidably connected to the housing. The fixing component includes a mounting base located in a groove on the top surface of the housing. A pressure rod is slidably mounted in the mounting base, and slots are provided on both sides of the pressure rod. An elastic sheet is fixedly mounted inside the mounting base, and a pressing block is fixedly mounted on one side of the elastic sheet. The pressing block corresponds to the slot and can limit the pressure rod.

[0006] As a further description of the above technical solution: A spring is fixedly installed at the bottom end of the pressure rod, and a slider is slidably installed at the bottom end of the mounting base.

[0007] As a further description of the above technical solution: The slider engages with the toothed plate through teeth at its bottom end, and the bottom end of the spring is fixedly connected to the slider.

[0008] As a further description of the above technical solution: The mounting base is slidably connected to the outer shell through a groove opened at the top of the outer shell, and two sets of elastic plates and compression blocks are symmetrically arranged about the pressure rod.

[0009] As a further description of the above technical solution: The guiding component includes an air guide plate, with connecting columns fixedly installed on both sides of the air guide plate, and sliding grooves opened on both sides of the air guide plate.

[0010] As a further description of the above technical solution: A rod is slidably installed in the groove, a rack is fixedly installed at one end of the rod, and a gear is meshed on one side of the rack.

[0011] As a further description of the above technical solution: A rotating shaft is fixedly installed inside the gear, and a turntable is fixedly installed at one end of the rotating shaft. The rotating shaft is rotatably connected to the outer casing through a through hole opened inside the outer casing.

[0012] As a further description of the above technical solution: The rack is slidably connected to the outer casing through a through hole on one side of the outer casing, and the connecting post is rotatably connected to the outer casing through a groove on the inner wall of the outer casing.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this invention, when testing a flow meter, the flow meter can be inserted into the housing from the top, while the sliding mounting base is brought close to the flange of the flow meter. The flange is then fixed by pushing the pressure rod downward. During the fixing process, the position of the mounting base can be adjusted to fix different flow meter flanges, thus eliminating the need to replace the connecting parts and reducing the impact on wind tunnel testing.

[0014] In this invention, the rotating gear drives the rack to move, thereby causing the air guide plate to rotate to a certain extent, thus guiding the airflow blown by the fan. This simulates the airflow from different directions to detect the flow meter, thereby better detecting the impact of different wind directions on the flow meter's use, ensuring the accuracy of the flow meter's detection, and also ensuring the accuracy of the flow meter in subsequent use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a simple wind tunnel device for testing the performance of a flow meter.

[0016] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of a simple wind tunnel device for testing the performance of a flow meter.

[0017] Figure 3 This is an exploded three-dimensional structural diagram of a fixed component in a simple wind tunnel device for testing the performance of a flow meter.

[0018] Figure 4 This is an exploded three-dimensional structural diagram of the guide component in a simple wind tunnel device for testing the performance of a flow meter.

[0019] Figure 5 A simple wind tunnel device for testing the performance of flow meters Figure 2 A magnified structural diagram of point A in the middle.

[0020] Legend: 1. Fan; 2. Flexible connecting pipe; 3. Regulating valve; 4. Housing; 5. Guide assembly; 51. Rack; 52. Turntable; 53. Shaft; 54. Air guide plate; 55. Connecting column; 56. Slide groove; 57. Gear; 58. Insert rod; 6. Standard flow meter; 7. Fixing assembly; 71. Pressure rod; 72. Slot; 73. Extrusion block; 74. Elastic sheet; 75. Spring; 76. Mounting base; 77. Slider; 8. Toothed plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] In its specific implementation, such as Figures 1-5 This utility model provides a technical solution: a simple wind tunnel device for testing the performance of a flow meter, including a housing 4, an adjusting door 3 at one end of the housing 4, a flexible connecting pipe 2 fixedly installed on one side of the adjusting door 3, a fan 1 fixedly installed at the other end of the flexible connecting pipe 2, a standard flow meter 6 inside the housing 4, a toothed plate 8 in a groove opened at the top of the housing 4; a guide component 5, which is located inside the housing 4 and connected to the housing 4; and a fixing component 7, which is located in the groove opened at the top of the housing 4 and slidably connected to the housing 4. The fixing component 7 includes a mounting base 76 located in a groove on the top surface of the outer casing 4. A pressure rod 71 is slidably mounted in the mounting base 76, and slots 72 are provided on both sides of the pressure rod 71. An elastic sheet 74 is fixedly mounted inside the mounting base 76, and a pressing block 73 is fixedly mounted on one side of the elastic sheet 74. The pressing block 73 corresponds to the slots 72 and can limit the pressure rod 71. A spring 75 is fixedly mounted at the bottom end of the pressure rod 71. A slider 77 is slidably mounted at the bottom end of the mounting base 76. The slider 77 engages with the toothed plate 8 through teeth provided at its bottom end. The bottom end of the spring 75 is fixedly connected to the slider 77. The mounting base 76 is slidably connected to the outer casing 4 through a groove provided at the top end of the outer casing 4. Two sets of elastic sheets 74 and pressing blocks 73 are symmetrically arranged about the pressure rod 71.

[0023] When testing the flow meter, first insert one end of the flow meter into the housing 4 through the opening at the top of the housing 4, so that the flange of the flow meter is located on the top surface of the housing 4. This pushes the mounting base 76 so that the pressure rod 71 is close to the flange. Then, press down on the pressure rod 71 so that one end of the pressure rod 71 contacts the top surface of the flange, thereby fixing the flange. The pressure rod 71 can be fixed by pushing the pressing block 73 and the slot 72 through the elastic sheet 74. Then, the fan 1 is started so that the airflow enters the housing 4. The flow meter under test is tested by the standard flow meter 6 and the data is compared for verification. The airflow can be adjusted by the regulating valve 3. like Figure 4 As shown, the guide assembly 5 includes an air guide plate 54, connecting columns 55 are fixedly installed on both sides of the air guide plate 54, and sliding grooves 56 are opened on both sides of the air guide plate 54. Insert rods 58 are slidably installed in the sliding grooves 56. A rack 51 is fixedly installed at one end of the insert rod 58. A gear 57 is meshed on one side of the rack 51. A rotating shaft 53 is fixedly installed in the gear 57. A turntable 52 is fixedly installed at one end of the rotating shaft 53. The rotating shaft 53 is rotatably connected to the housing 4 through a through hole opened in the housing 4. The rack 51 is slidably connected to the housing 4 through a through hole opened on one side of the housing 4. The connecting columns 55 are rotatably connected to the housing 4 through a groove opened in the inner wall of the housing 4. The turntable 52 and the rotating shaft 53 drive the gear 57 to rotate, which in turn drives the rack 51 to move. The movement of the rack 51 drives the insert rod 58 to move, which in turn drives the air guide plate 54 to rotate, thereby changing the airflow direction inside the outer casing 4. A damping ring is provided between the rotating shaft 53 and the outer casing 4 to prevent the rotating shaft 53 from rotating without human intervention.

[0024] Working principle: When testing the flow meter, first insert one end of the flow meter into the housing 4 through the opening at the top of the housing 4 and make the flange of the flow meter located on the top surface of the housing 4. Push the mounting base 76 to make the pressure rod 71 close to the flange. Then press down on the pressure rod 71 so that one end of the pressure rod 71 contacts the top surface of the flange, which will fix the flange. The pressure rod 71 can be fixed by pushing the extrusion block 73 and the slot 72 through the elastic sheet 74. Then, by starting the fan 1, the airflow enters the casing 4, and is detected by the standard flow meter 6 and the flow meter being tested. The data is compared for verification, and the airflow can be adjusted by adjusting the door 3. At the same time, the turntable 52 can drive the gear 57 to rotate, and the gear 57 can drive the rack 51 to move, thereby driving the air guide plate 54 to rotate, thus changing the airflow direction inside the outer casing 4.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A simple wind tunnel device for testing the performance of a flow meter, characterized in that, include: The outer casing (4) has an adjustment door (3) at one end, a flexible connecting pipe (2) is fixedly installed on one side of the adjustment door (3), and a fan (1) is fixedly installed at the other end of the flexible connecting pipe (2). A standard flow meter (6) is installed inside the outer casing (4), and a toothed plate (8) is installed in the groove opened at the top of the outer casing (4). A guide assembly (5) is located inside the housing (4) and is connected to the housing (4); Fixing component (7), the fixing component (7) is located in the groove opened at the top of the housing (4) and is slidably connected to the housing (4); The fixing component (7) includes a mounting base (76) located in the groove on the top surface of the outer shell (4). A pressure rod (71) is slidably installed in the mounting base (76), and slots (72) are provided on both sides of the pressure rod (71). An elastic sheet (74) is fixedly installed inside the mounting base (76), and a pressing block (73) is fixedly installed on one side of the elastic sheet (74). The pressing block (73) corresponds to the slot (72) and can limit the pressure rod (71).

2. The simplified wind tunnel device for testing the performance of a flow meter according to claim 1, characterized in that, A spring (75) is fixedly installed at the bottom end of the pressure rod (71), and a slider (77) is slidably installed at the bottom end of the mounting base (76).

3. The simplified wind tunnel device for testing the performance of a flow meter according to claim 2, characterized in that, The slider (77) engages with the toothed plate (8) through the teeth provided at its bottom end, and the bottom end of the spring (75) is fixedly connected to the slider (77).

4. The simplified wind tunnel device for testing the performance of a flow meter according to claim 1, characterized in that, The mounting base (76) is slidably connected to the outer shell (4) through a groove opened at the top of the outer shell (4), and the elastic sheet (74) and the pressing block (73) are arranged symmetrically about the pressure rod (71) in two sets.

5. A simple wind tunnel device for testing the performance of a flow meter according to claim 1, characterized in that, The guiding component (5) includes an air guide plate (54), with connecting columns (55) fixedly installed on both sides of the air guide plate (54), and grooves (56) opened on both sides of the air guide plate (54).

6. A simplified wind tunnel device for testing the performance of a flow meter according to claim 5, characterized in that, A rod (58) is slidably installed in the groove (56), and a rack (51) is fixedly installed at one end of the rod (58). A gear (57) is meshed on one side of the rack (51).

7. A simplified wind tunnel device for testing the performance of a flow meter according to claim 6, characterized in that, A rotating shaft (53) is fixedly installed inside the gear (57). A turntable (52) is fixedly installed at one end of the rotating shaft (53). The rotating shaft (53) is rotatably connected to the outer shell (4) through a through hole opened inside the outer shell (4).

8. A simplified wind tunnel device for testing the performance of a flow meter according to claim 6, characterized in that, The rack (51) is slidably connected to the outer shell (4) through a through hole on one side of the outer shell (4), and the connecting post (55) is rotatably connected to the outer shell (4) through a groove on the inner wall of the outer shell (4).

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