Air volume detection device

Abstract

The application discloses a wind volume detection device, which comprises an excitation power cabinet, a rotating shaft, blades, a transmission mechanism, a water storage box, a water tank and transparent tubes. The top wall of the excitation power cabinet is provided with an air outlet, and a fan is arranged in the excitation power cabinet. The rotating shaft is located above the air outlet and is pivotally connected with the excitation power cabinet. The blades are in plurality and are distributed in the circumferential direction of the rotating shaft. The blades are connected with the rotating shaft. The power input end of the transmission mechanism is connected with the rotating shaft. The water storage box and the water tank are both installed on the outer circumferential wall of the excitation power cabinet and are spaced apart in the circumferential direction of the excitation power cabinet. The water storage box is located above the water tank. The power output end of the transmission mechanism is connected with the water storage box and the water tank, so that when the rotating shaft rotates, the colored liquid in the water tank is driven to flow to the water storage box through the transmission mechanism. The transparent tubes are in plurality and are vertically and equally spaced. The two ends of the transparent tubes are respectively communicated with the water storage box and the water tank. The wind volume detection device has the advantages of good fan detection effect.

Description

Technical Field

[0001] This invention relates to the field of fan testing technology, and more specifically, to an airflow testing device. Background Technology

[0002] In related technologies, the excitation power cabinet of a generator mainly consists of a thyristor rectifier bridge, fuses, etc., to convert alternating current into controllable direct current, thereby providing the excitation current required by the generator rotor under various operating conditions. The excitation power cabinet generates a large amount of heat under high current operation, requiring a fan for cooling to ensure reliable operation. To monitor fan operation, a red ribbon is typically tied to the external air outlet of the fan to detect airflow. However, this method is inconvenient for detecting the air volume at the outlet, resulting in poor fan monitoring performance. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of the present invention provide an airflow detection device that has the advantage of good fan detection performance.

[0004] The airflow detection device according to an embodiment of the present invention includes an excitation power cabinet, a rotating shaft, blades, a transmission mechanism, a water storage box, a water tank, and transparent tubes. The top wall of the excitation power cabinet has an air outlet, and a fan facing the air outlet is installed inside the excitation power cabinet. The rotating shaft is located above the air outlet and is pivotally connected to the excitation power cabinet. Multiple blades are distributed at intervals around the circumference of the rotating shaft, and the blades are connected to the rotating shaft. The power input end of the transmission mechanism is connected to the rotating shaft. The water storage box and the water tank are both installed on the outer peripheral wall of the excitation power cabinet and are spaced apart circumferentially. The water storage box is located above the water tank. The power output end of the transmission mechanism is connected to the water storage box and the water tank so that when the rotating shaft rotates, the colored liquid in the water tank is driven to flow to the water storage box via the transmission mechanism. Multiple transparent tubes are distributed at equal intervals vertically, and both ends of the transparent tubes are connected to the water storage box and the water tank, respectively.

[0005] According to an embodiment of the airflow detection device of the present invention, the airflow rate of the fan and the number of transparent tubes through which the colored liquid passes are correlated. Therefore, the airflow rate of the fan can be estimated by observing the number of transparent tubes through which the colored liquid passes. This achieves the effect of detecting the airflow at the outlet, thereby improving the detection effect of the fan.

[0006] In some embodiments, the transmission mechanism includes a housing, a turntable, a hose, and a pressure member. The housing is connected to the excitation power cabinet and has an arc-shaped cavity coaxial with the rotating shaft. The turntable is coaxially connected to the rotating shaft, and a portion of the turntable fits into the arc-shaped cavity. An annular receiving gap is formed between the portion of the turntable located in the arc-shaped cavity and the peripheral wall of the arc-shaped cavity. The two ends of the hose are respectively connected to the water storage box and the water tank. The hose includes an arc-shaped pipe segment, which is placed in the receiving gap and coaxial with the arc-shaped cavity. The pressure member is disposed on the peripheral surface of the turntable so that when the turntable rotates, it drives the pressure member to squeeze the arc-shaped pipe segment towards the water storage box.

[0007] In some embodiments, the number of pressure members is multiple and they are evenly distributed around the circumference of the turntable.

[0008] In some embodiments, the pressure member includes a roller or a protrusion.

[0009] In some embodiments, the central angle of the arc-shaped cavity is 120-180 degrees.

[0010] In some embodiments, the air volume detection device further includes a pole, the bottom end of which is connected to the top wall of the excitation power cabinet, and the top end of which is connected to the housing.

[0011] In some embodiments, the air volume detection device further includes an outlet pipe and an inlet pipe. The top wall of the water tank is provided with a through hole. The first end of the outlet pipe is inserted into the water tank through the through hole and is adjacent to the bottom wall of the water tank. The second end of the outlet pipe is adjacent to the first side of the housing and communicates with the first end of the hose. The top wall of the water storage box is provided with an interface. The first end of the inlet pipe communicates with the interface. The second end of the inlet pipe is adjacent to the second side of the housing and communicates with the second end of the hose.

[0012] In some embodiments, the first end of the transparent tube is connected to the peripheral wall of the water storage box, and the second end of the transparent tube is connected to the peripheral wall of the water tank.

[0013] In some embodiments, the airflow detection device further includes a guide frame, which is located above and surrounds the air outlet. The bottom end of the guide frame is connected to the top wall of the excitation power cabinet. The rotating shaft and the blades are both located inside the guide frame, and the rotating shaft and the guide frame are pivotally connected. The first end of the rotating shaft protrudes out of the outside of the guide frame, and the turntable and the first end of the rotating shaft are coaxially connected.

[0014] In some embodiments, the blade has an arc-shaped cross-section. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an airflow detection device according to an embodiment of the present invention.

[0016] Figure 2 This is a partial schematic diagram of an airflow detection device according to an embodiment of the present invention.

[0017] Figure 3 This is another partial schematic diagram of the airflow detection device according to an embodiment of the present invention.

[0018] Reference numerals in the attached drawings: 1. Excitation power cabinet; 2. Rotating shaft; 3. Blade; 4. Transmission mechanism; 41. Housing; 411. Arc-shaped cavity; 42. Turntable; 43. Hose; 431. Arc-shaped pipe section; 44. Pressure component; 5. Water storage box; 51. Inlet pipe; 6. Water tank; 61. Outlet pipe; 7. Transparent pipe; 8. Upright pole; 9. Guide frame. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following is combined Figures 1-3 An airflow detection device according to an embodiment of the present invention is described.

[0021] like Figure 1 and Figure 2 As shown, the airflow detection device according to an embodiment of the present invention includes an excitation power cabinet 1, a rotating shaft 2, blades 3, a transmission mechanism 4, a water storage box 5, a water tank 6, and transparent tubes 7. The top wall of the excitation power cabinet 1 has an air outlet, and a fan facing the air outlet is installed inside the excitation power cabinet 1. The rotating shaft 2 is located above the air outlet and is pivotally connected to the excitation power cabinet 1. Multiple blades 3 are distributed at intervals around the circumference of the rotating shaft 2, and the blades 3 are connected to the rotating shaft 2. The power input end of the transmission mechanism 4 is connected to the rotating shaft 2. The water storage box 5 and the water tank 6 are both installed on the outer peripheral wall of the excitation power cabinet 1 and are spaced apart circumferentially. The water storage box 5 is located above the water tank 6. The power output end of the transmission mechanism 4 is connected to the water storage box 5 and the water tank 6 so that when the rotating shaft 2 rotates, the colored liquid in the water tank 6 is driven to flow to the water storage box 5 through the transmission mechanism 4. Multiple transparent tubes 7 are distributed at equal intervals vertically, and both ends of the transparent tubes 7 are connected to the water storage box 5 and the water tank 6, respectively.

[0022] According to the airflow detection device of this embodiment, when the fan exhausts air to the air outlet, the air drives the blades 3 to rotate, the blades 3 drive the rotating shaft 2 to rotate, the rotating shaft 2 transmits power to the transmission mechanism 4 and drives it to operate, the power output end of the transmission mechanism 4 outputs power and transports the colored liquid in the water tank 6 to the water storage box 5. Due to the height difference between the water storage box 5 and the water tank 6, the colored liquid in the water storage box 5 flows back to the water tank 6 through the transparent pipe 7. This realizes the circulation of the colored liquid.

[0023] After the colored liquid circulates continuously for a period of time, the liquid level in the water storage box 5 tends to stabilize, and the number of transparent tubes 7 through which the colored liquid passes remains constant. When the airflow of the fan is large, the blades 3 rotate faster and have greater power, thus the power output from the power output end of the transmission mechanism 4 is also larger, thereby increasing the flow rate of the colored liquid from the water tank 6 to the water storage box 5, raising the stable liquid level in the water storage box 5, and increasing the number of transparent tubes 7 through which the colored liquid passes. When the airflow of the fan is small, the blades 3 rotate slower and have less power, thus the power output from the power output end of the transmission mechanism 4 is also smaller, thereby slowing down the flow rate of the colored liquid from the water tank 6 to the water storage box 5, reducing the flow rate, lowering the stable liquid level in the water storage box 5, and reducing the number of transparent tubes 7 through which the colored liquid passes.

[0024] As shown above, there is a correlation between the fan's airflow and the number of transparent tubes 7 through which the colored liquid passes. Therefore, by observing the number of transparent tubes 7 through which the colored liquid passes, the fan's airflow can be estimated, thus achieving the effect of detecting the airflow at the outlet. This improves the fan's detection efficiency.

[0025] Understandably, in this embodiment, the airflow at the vent can be detected by the rotation of the blade 3, thereby determining the start and stop of the fan.

[0026] Specifically, when the flow rate of the colored liquid flowing into the water storage box 5 is the same as the flow rate of the colored liquid flowing out, the liquid level in the water storage box 5 is in a stable state.

[0027] Understandably, the transparent tube 7 is made of glass.

[0028] Specifically, there are 8 transparent tubes 7.

[0029] Specifically, the axial and horizontal directions of the rotating shaft 2 are aligned.

[0030] For ease of understanding, Figure 1 Arrow A in the diagram indicates the vertical / up-down direction of the airflow detection device.

[0031] In some embodiments, such as Figure 2As shown, the transmission mechanism 4 includes a housing 41, a turntable 42, a hose 43, and a pressure member 44. The housing 41 is connected to the excitation power cabinet 1 and has an arc-shaped cavity 411 coaxial with the rotating shaft 2. The turntable 42 is coaxially connected to the rotating shaft 2, and a portion of the turntable 42 fits into the arc-shaped cavity 411, forming an annular receiving gap between the portion of the turntable 42 located in the arc-shaped cavity 411 and the peripheral wall of the arc-shaped cavity 411. The two ends of the hose 43 are respectively connected to the water storage box 5 and the water tank 6. The hose 43 includes an arc-shaped pipe section 431, which is placed in the receiving gap and coaxial with the arc-shaped cavity 411. The pressure member 44 is disposed on the peripheral surface of the turntable so that when the turntable 42 rotates, it drives the pressure member 44 to press the arc-shaped pipe section 431 against the water storage box 5.

[0032] Therefore, when the rotating shaft 2 rotates, it drives the turntable 42 to rotate, and the turntable 42 drives the pressure member 44 to rotate. The pressure member 44 squeezes the arc-shaped pipe section 431 into the water storage box 5, thereby realizing the delivery of the colored liquid in the water tank 6 to the water storage box 5.

[0033] In addition, the housing 41 is used to accommodate and limit the arc-shaped tube segment 431 to prevent the arc-shaped tube segment 431 from shifting when it is squeezed by the pressure member 44.

[0034] Specifically, when the pressure member 44 begins to compress the arc-shaped pipe section 431, the air in the portion of the arc-shaped pipe section 431 located before the pressure member 44 moves is forced to flow towards the water storage box 5. The portion of the arc-shaped pipe section 431 located after the pressure member 44 moves, having already been compressed, no longer contains air, temporarily forming a vacuum. As a result, a pressure difference is created between this portion and the water tank 6, which drives the colored liquid in the water tank 6 to flow towards the arc-shaped pipe section 431.

[0035] As the turntable 42 rotates, the pressure member 44 repeatedly squeezes the arc-shaped pipe section 431, causing the colored liquid in the water tank 6 to continuously approach the arc-shaped pipe section 431. When the arc-shaped pipe section 431 contains colored liquid, the moving pressure member 44 continuously delivers the colored liquid to the water storage box 5. The colored liquid in the water storage box 5 then flows into the water tank 6 through the transparent pipe 7 by gravity. Thus, a circulating flow of colored liquid is formed between the water tank 6 and the water storage box 5.

[0036] The shell 41 has an arc-shaped planar shape.

[0037] In some embodiments, such as Figure 2 As shown, there are multiple pressure pieces 44, which are evenly distributed around the circumference of the turntable 42.

[0038] This increases the efficiency of the pressing component 44 in extruding the arc-shaped tube section 431, thereby accelerating the rate of colored liquid circulation and reducing the time required for the water storage box 5 to form a stable liquid level.

[0039] Specifically, there are four pressure pieces 44.

[0040] In some embodiments, the pressure member 44 includes a roller or a protrusion.

[0041] This facilitates the pressing of the arc-shaped tube segment 431 by the pressing component 44.

[0042] Preferably, the pressure member 44 includes rollers.

[0043] In some embodiments, such as Figure 2 As shown, the central angle of the arc cavity 411 is 120-180 degrees.

[0044] Therefore, the arc center angle of the arc cavity 411 is relatively large, which makes it easier to define the arc section 431.

[0045] Understandably, the central angle of the arc-shaped pipe section 431 is the same as the central angle of the arc-shaped cavity 411.

[0046] Preferably, the arc center angle of the arc cavity 411 is 180 degrees. Thus, when two adjacent pressure members 44 simultaneously compress the arc tube section 431, the portion between the two adjacent pressure members 44 in the arc tube section 431 will form a sealed state. Under the rotation of the pressure members 44, the colored liquid in this portion is introduced into the water storage box 5.

[0047] In some embodiments, such as Figure 1 and Figure 2 As shown, the air volume detection device also includes a pole 8, the bottom end of which is connected to the top wall of the excitation power cabinet 1, and the top end of which is connected to the housing 41.

[0048] Therefore, the upright 8 is used to support the housing 41.

[0049] Understandably, the housing 41 is connected to the excitation power cabinet 1 via the upright 8.

[0050] In some embodiments, such as Figure 2 and Figure 3 As shown, the airflow detection device also includes an outlet pipe 61 and an inlet pipe 51. The top wall of the water tank 6 has a through hole. The first end of the outlet pipe 61 is inserted into the water tank 6 through the through hole and is adjacent to the bottom wall of the water tank 6. The second end of the outlet pipe 61 is adjacent to the first side of the housing 41 and communicates with the first end of the hose 43. The top wall of the water storage box 5 has an interface. The first end of the inlet pipe 51 communicates with the interface, and the second end of the inlet pipe 51 is adjacent to the second side of the housing 41 and communicates with the second end of the hose 43.

[0051] Therefore, when the liquid level in the water tank 6 is low, the first end of the outlet pipe 61 can still be connected to the colored liquid in the water tank 6, making it convenient to discharge the colored liquid in the water tank 6.

[0052] Understandably, the first end of the hose 43 is connected to the water tank 6 via the liquid outlet pipe 61.

[0053] Understandably, the second end of the hose 43 is connected to the water storage box 5 via the liquid inlet pipe 51.

[0054] Specifically, both the outlet pipe 61 and the inlet pipe 51 are rigid pipes.

[0055] Preferably, the hose 43 is made of rubber.

[0056] In some embodiments, such as Figure 3 As shown, the first end of the transparent tube 7 is connected to the peripheral wall of the water storage box 5, and the second end of the transparent tube 7 is connected to the peripheral wall of the water tank 6.

[0057] Thus, the transparent tube 7 achieves the effect of guiding the colored liquid in the water storage box 5 to the water tank 6. In addition, the multiple transparent tubes 7 distributed vertically correspond to different liquid levels in the water storage box 5.

[0058] Understandably, the first ends of the multiple transparent tubes 7 are distributed at equal intervals in the vertical direction.

[0059] Understandably, the second ends of the multiple transparent tubes 7 are distributed at equal intervals in the vertical direction.

[0060] In some embodiments, such as Figure 1 As shown, the air volume detection device also includes a guide frame 9, which is located above the air outlet and surrounds the air outlet. The bottom end of the guide frame 9 is connected to the top wall of the excitation power cabinet 1. The rotating shaft 2 and the blade 3 are both located inside the guide frame 9, and the rotating shaft 2 and the guide frame 9 are pivotally connected. The first end of the rotating shaft 2 protrudes from the outside of the guide frame 9, and the turntable 42 is coaxially connected to the first end of the rotating shaft 2.

[0061] Therefore, the guide frame 9 is used to guide the output air of the fan, which improves the working effect of the output air on the blades 3, thereby improving the accuracy of air volume detection.

[0062] Specifically, the guide frame 9 includes multiple vertical plates evenly distributed around the air outlet. The bottom end of the vertical plate is connected to the top wall of the excitation power cabinet 1, and any two adjacent vertical plates are connected.

[0063] In some embodiments, such as Figure 2 As shown, the cross-sectional shape of blade 3 is arc-shaped.

[0064] This improves the driving effect of the fan's output air on blade 3, making it easier for blade 3 to rotate.

[0065] Specifically, blade 3 extends axially along shaft 2.

[0066] In summary, the airflow detection device of this invention converts the output airflow of the fan into the number of colored liquids passing through the transparent tube 7, thereby realizing the detection of the airflow at the air outlet.

[0067] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. An airflow detection device, characterized in that, include: An excitation power cabinet is provided with an air outlet on its top wall, and a fan facing the air outlet is provided inside the excitation power cabinet. A rotating shaft and blades, wherein the rotating shaft is located above the air outlet and is pivotally connected to the excitation power cabinet, and there are multiple blades that are spaced apart in the circumferential direction of the rotating shaft, and the blades are connected to the rotating shaft; A transmission mechanism, wherein the power input end of the transmission mechanism is connected to the rotating shaft; A water storage box and a water tank are installed on the outer peripheral wall of the excitation power cabinet and spaced apart circumferentially from each other. The water storage box is located above the water tank. The power output end of the transmission mechanism is connected to the water storage box and the water tank so that when the rotating shaft rotates, the colored liquid in the water tank is driven to flow to the water storage box through the transmission mechanism. and A transparent tube, wherein there are multiple transparent tubes and they are evenly distributed vertically, and both ends of the transparent tubes are connected to the water storage box and the water tank, respectively; The transmission mechanism includes: The housing is connected to the excitation power cabinet, and the housing has an arc-shaped cavity coaxial with the rotating shaft; A turntable, which is coaxially connected to the rotating shaft, with a portion of the turntable fitting into the arc-shaped cavity, and an annular receiving gap formed between the portion of the turntable located in the arc-shaped cavity and the peripheral wall of the arc-shaped cavity; A flexible hose, with its two ends connected to the water storage box and the water tank respectively, includes an arc-shaped section positioned within the receiving gap and coaxial with the arc-shaped cavity; and A pressing component is disposed on the circumference of the turntable so that when the turntable rotates, it drives the pressing component to squeeze the arc-shaped pipe section into the water storage box.

2. The air volume detection device according to claim 1, characterized in that, There are multiple pressing components, which are evenly distributed around the circumference of the turntable.

3. The airflow detection device according to claim 1 or 2, characterized in that, The pressing element includes rollers or protrusions.

4. The air volume detection device according to claim 1, characterized in that, The central angle of the arc-shaped cavity is 120-180 degrees.

5. The air volume detection device according to claim 1, characterized in that, The air volume detection device also includes a pole, the bottom end of which is connected to the top wall of the excitation power cabinet, and the top end of which is connected to the housing.

6. The air volume detection device according to claim 1, characterized in that, The air volume detection device also includes: The water tank has a liquid outlet pipe with a through hole in its top wall. The first end of the liquid outlet pipe is inserted into the water tank through the through hole and is adjacent to the bottom wall of the water tank. The second end of the liquid outlet pipe is adjacent to the first side of the housing and communicates with the first end of the flexible hose. The water storage box has an interface on its top wall. The first end of the inlet pipe is connected to the interface, and the second end of the inlet pipe is adjacent to the second side of the housing and connected to the second end of the hose.

7. The air volume detection device according to claim 1, characterized in that, The first end of the transparent tube is connected to the peripheral wall of the water storage box, and the second end of the transparent tube is connected to the peripheral wall of the water tank.

8. The air volume detection device according to claim 1, characterized in that, The airflow detection device also includes a guide frame, which is located above and surrounds the air outlet. The bottom end of the guide frame is connected to the top wall of the excitation power cabinet. The rotating shaft and the blades are both located inside the guide frame, and the rotating shaft and the guide frame are pivotally connected. The first end of the rotating shaft protrudes from the outside of the guide frame, and the turntable and the first end of the rotating shaft are coaxially connected.

9. The air volume detection device according to claim 1, characterized in that, The blade has an arc-shaped cross-section.

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