Air volume detection device for air measurement pipeline

Abstract

The utility model provides an air volume detection device for an air measurement pipeline, and belongs to the technical field of pipeline air measurement. Comprising a pipeline, a detection pipe fitting is arranged in the pipeline, the upper half portion of the detection pipe fitting extends out of the pipeline, a wind measuring mechanism is installed on one side of the upper half portion of the detection pipe fitting, a blockage measuring mechanism is installed on the other side of the upper half portion of the detection pipe fitting, and a reverse blowing mechanism is installed at the top end of the detection pipe fitting. According to the air volume detection device for the air measurement pipeline, the forward air volume is collected through the first pressure tapping vertical pipe and the first middle pressure tapping pipe, the back air volume is detected through the second pressure tapping vertical pipe and the second middle pressure tapping pipe, and then the air volume in the pipeline is measured and calculated through the air measurement mechanism; the reciprocating lead screw is driven by the motor to rotate, so that the reciprocating lead screw drives the sliding plate to move up and down, the first receiver and the second receiver detect whether the interiors of the first main pressure tapping pipe and the second main pressure tapping pipe are blocked or not, the effect of automatic and continuous detection is achieved, and manual detection of a user is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline wind measurement, and particularly relates to an air volume detection device for a wind measurement pipeline. Background Technique

[0002] Chinese Patent, with the application number 202121956508.0, discloses a multi-point anti-blocking wind measurement device. By adding a rectifying plate on the positive pressure wind measurement surface, it can design guide vanes at different angles according to the application environment, enabling the fluid to flow through the measurement device more smoothly and improving the measurement accuracy; the rectifying plate can also support the measurement device, playing a more stable role, so that the measurement device will not deviate or turn during long-term use; the rectifying plate can also block part of the dust and reduce the blockage of the measurement device;

[0003] However, when this device measures the wind in the pipeline, the particles entering from the pressure tapping port are likely to cause blockage in the main pressure tapping pipe, resulting in inaccurate measurement of the detection device. Therefore, it is necessary to continuously detect the blockage of the main pressure tapping pipe to ensure the normal use of the detection device; however, the existing anti-blocking devices require users to hold the receiver to detect the pipeline, which is time-consuming and laborious, and cannot continuously detect the main pressure tapping pipe, so the practicability is poor. Content of the Utility Model

[0004] In order to solve the problem of inconvenient continuous blockage detection in the above-mentioned existing technology, the utility model provides an air volume detection device for a wind measurement pipeline, which adopts a blockage detection mechanism combined with a back-blowing mechanism to achieve the effect of immediately performing back-blowing for dredging after detecting blockage in the main pressure tapping pipe. The specific technical solution is as follows: An air volume detection device for a wind measurement pipeline, comprising: a pipeline, a detection pipe fitting is arranged in the pipeline, the upper half of the detection pipe fitting extends out of the pipeline, a wind measurement mechanism is installed on one side of the upper half of the detection pipe fitting, a blockage measurement mechanism is installed on the other side of the upper half of the detection pipe fitting, and a back-blowing mechanism is installed at the top of the detection pipe fitting.

[0005] Preferably, the detection pipe fitting includes: a first main pressure tapping pipe, a connecting plate and a second main pressure tapping pipe. The connecting plate is welded on the outer walls of the first main pressure tapping pipe and the second main pressure tapping pipe. The bottom ends of the first main pressure tapping pipe and the second main pressure tapping pipe extend into the pipeline, and the connecting plate is attached to the outer wall of the pipeline.

[0006] Preferably, a first bifurcated conduit is installed at the bottom end of the first main pressure tapping pipe. Pressure tapping vertical pipes are installed at the bottoms of both ends of the first bifurcated conduit. A first middle pressure tapping pipe is installed at the relative ends of the two pressure tapping vertical pipes; a second bifurcated conduit is installed at the bottom end of the second main pressure tapping pipe. Pressure tapping vertical pipes are installed at the bottoms of both ends of the second bifurcated conduit. A second middle pressure tapping pipe is installed at the relative ends of the two pressure tapping vertical pipes.

[0007] Preferably, the pipe is a circular pipe, and the connecting plate is an arc-shaped plate structure.

[0008] Preferably, the pipe is a square pipe, and the connecting plate is a straight plate structure.

[0009] Preferably, the wind measurement mechanism includes: side pipes, pressure guiding pipes, and differential pressure transmitters. Side pipes are installed on the outer side walls of one side of the first main pressure-taking pipe and the second main pressure-taking pipe. The side pipes are located outside the pipe. The first main pressure-taking pipe and the second main pressure-taking pipe communicate with the interiors of the two side pipes respectively. Pressure guiding pipes are installed at the ends of the side pipes. The side pipes communicate with the interiors of the pressure guiding pipes. The pressure guiding pipes are connected with differential pressure transmitters.

[0010] Preferably, the blockage measurement mechanism includes: a blockage detector, probe wires, and sealing openings. A blockage detector is sleeved on the outer wall of the side pipe. Sealing openings are formed on the outer side walls of one side of the first main pressure-taking pipe and the second main pressure-taking pipe. The sealing openings are located above the side pipes. Probe wires are wound around the surface of the blockage detector. The probe wires correspond to the sealing openings one by one. The probe wires extend into the sealing openings.

[0011] Preferably, a first kit is sleeved on the outer wall of the first main pressure-taking pipe, and a second kit is sleeved on the outer wall of the second main pressure-taking pipe. The first kit and the second kit are both located above the sealing openings. A first connecting frame is installed at the front end of the first kit, and a second connecting frame is installed at the rear end of the second kit. A first connecting piece is installed at the bottom end of the first connecting frame, and a second connecting piece is installed at the bottom end of the second connecting frame. The first connecting piece and the second connecting piece are fixedly connected to the connecting plate. A top plate and a bottom plate are respectively installed between the first connecting frame and the second connecting frame. The top plate is located above the bottom plate. A reciprocating lead screw is rotatably connected between the top plate and the bottom plate. A sliding plate is slidably connected between the first connecting frame and the second connecting frame. The sliding plate is threadedly sleeved on the outer wall of the reciprocating lead screw. A motor is installed at the top end of the top plate. The motor is connected to the reciprocating lead screw.

[0012] Preferably, a first extension block and a second extension block are symmetrically installed at one end of the sliding plate opposite to the detection pipe fitting. A first fixture is installed at one end of the first extension block away from the sliding plate, and a second fixture is installed at one end of the second extension block away from the sliding plate. A first receiver is clamped in the first fixture, and a second receiver is clamped in the second fixture. The first receiver is arranged opposite to the first main pressure-taking pipe, and the second receiver is arranged opposite to the second main pressure-taking pipe. The first receiver and the second receiver correspond to the two probe wires one by one. The first receiver and the second receiver are respectively matched with the two probe wires.

[0013] In addition, the air volume detection device for the air duct in the above technical solution provided by the present utility model may further have the following additional technical features: The backwashing mechanism includes: a pulse valve and a vacuum package, and pulse valves are installed at the tops of both the main pressure-taking pipe one and the main pressure-taking pipe two.

[0014] In the above technical solution, a vacuum package is installed on one side of the two pulse valves.

[0015] An air volume detection device for an air duct of the present utility model has the following beneficial effects compared with the prior art:

[0016] 1. The air volume detection device for the air duct collects the forward air volume through the pressure-taking vertical pipe one and the middle pressure-taking pipe one, detects the back air volume through the pressure-taking vertical pipe two and the middle pressure-taking pipe two, and then measures and calculates the air volume in the duct through the air volume measuring mechanism.

[0017] 2. The motor drives the reciprocating lead screw to rotate, so that the reciprocating lead screw drives the slide plate to move up and down, thereby enabling the receiver one and the receiver two to detect whether the main pressure-taking pipe one and the main pressure-taking pipe two are blocked respectively, achieving the effect of automatic continuous detection, avoiding manual detection by the user, and saving time and effort.

[0018] 3. When the blockage measuring mechanism detects a blockage situation, the control system controls the backwashing mechanism to work, timely dredge the interiors of the main pressure-taking pipe one and the main pressure-taking pipe two, and has strong practicability. Description of the Drawings

[0019] Figure 1 It is a front view schematic diagram of the first embodiment of the air volume detection device for the air duct provided by the present utility model.

[0020] Figure 2 It is a rear view schematic diagram of the first embodiment of the air volume detection device for the air duct provided by the present utility model.

[0021] Figure 3 It is a side view schematic diagram of the first embodiment of the air volume detection device for the air duct provided by the present utility model.

[0022] Figure 4 It is a front view schematic diagram of the second embodiment of the air volume detection device for the air duct provided by the present utility model.

[0023] Among them, Figures 1 to 4The reference numerals in the drawings and the component names are as follows: 1, pipeline; 2, detection pipe fitting; 3, wind measurement mechanism; 4, blockage measurement mechanism; 5, backwashing mechanism; 6, blockage detector; 7, probe wire; 8, sealing port; 9, receiver 1; 10, receiver 2; 21, main pressure-taking pipe 1; 22, connecting plate; 23, bifurcated conduit 1; 24, pressure-taking vertical pipe 1; 25, middle pressure-taking pipe 1; 26, main pressure-taking pipe 2; 27, bifurcated conduit 2; 28, pressure-taking vertical pipe 2; 29, middle pressure-taking pipe 2; 31, side pipe; 32, pressure guiding pipe; 33, differential pressure transmitter; 41, kit 1; 42, kit 2; 43, connecting frame 1; 44, connecting frame 2; 45, top plate; 46, bottom plate; 47, reciprocating lead screw; 48, slide plate; 49, motor; 410, connecting piece 1; 411, connecting piece 2; 481, extension block 1; 482, clamp 1; 483, extension block 2; 484, clamp 2; 51, pulse valve; 52, vacuum package. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Embodiment 1: Please refer to Figures 1 to 3 : A device for detecting the air volume of a wind measurement pipeline, comprising: a pipeline 1, a detection pipe fitting 2 is arranged inside the pipeline 1, the upper half of the detection pipe fitting 2 extends out of the pipeline 1, a wind measurement mechanism 3 is installed on one side of the upper half of the detection pipe fitting 2, a blockage measurement mechanism 4 is installed on the other side of the upper half of the detection pipe fitting 2, a backwashing mechanism 5 is installed at the top end of the detection pipe fitting 2, and the wind measurement mechanism 3, the blockage measurement mechanism 4 and the backwashing mechanism 5 are controlled by a control system.

[0026] As a preferred solution, further, the detection pipe fitting 2 includes: a main pressure-taking pipe 1 21, a connecting plate 22 and a main pressure-taking pipe 2 26. The connecting plate 22 is welded to the outer walls of the main pressure-taking pipe 1 21 and the main pressure-taking pipe 2 26. The bottom ends of the main pressure-taking pipe 1 21 and the main pressure-taking pipe 2 26 extend into the pipeline 1, and the connecting plate 22 is attached to the outer wall of the pipeline 1. The connecting plate 22 is used to limit the installation of the main pressure-taking pipe 1 21 and the main pressure-taking pipe 2 26 and seal the connection port with the pipeline 1.

[0027] As a preferred solution, furthermore, a bifurcated conduit I 23 is installed at the bottom end of the main pressure-taking pipe I 21. Pressure-taking vertical pipes I 24 are installed at the bottom ends of both ends of the bifurcated conduit I 23. Middle pressure-taking pipes I 25 are installed at the opposite ends of the two pressure-taking vertical pipes I 24; a bifurcated conduit II 27 is installed at the bottom end of the main pressure-taking pipe II 26. Pressure-taking vertical pipes II 28 are installed at the bottom ends of both ends of the bifurcated conduit II 27. Middle pressure-taking pipes II 29 are installed at the opposite ends of the two pressure-taking vertical pipes II 28. The pressure-taking vertical pipes I 24 and the middle pressure-taking pipes I 25 and the pressure-taking vertical pipes II 28 and the middle pressure-taking pipes II 29 are symmetrically arranged.

[0028] As a preferred solution, furthermore, the pipe 1 is a circular pipe, and the connecting plate 22 is an arc-shaped plate structure.

[0029] As a preferred solution, furthermore, the wind measurement mechanism 3 includes: a side pipe 31, a pressure guiding pipe 32, and a differential pressure transmitter 33. Side pipes 31 are installed on the outer walls of one sides of the main pressure-taking pipe I 21 and the main pressure-taking pipe II 26. The side pipes 31 are located outside the pipe 1. The main pressure-taking pipe I 21 and the main pressure-taking pipe II 26 are respectively communicated with the interiors of the two side pipes 31. Pressure guiding pipes 32 are installed at the ends of the side pipes 31. The side pipes 31 and the pressure guiding pipes 32 are internally communicated. The pressure guiding pipe 32 is connected with a differential pressure transmitter 33. The pressure guiding pipe 32 is used to introduce pressure into the differential pressure transmitter 33. The differential pressure transmitter 33 and the calculation formula jointly measure the air volume.

[0030] As a preferred solution, furthermore, the blockage measurement mechanism 4 includes: a blockage detector 6, a probe wire 7, and a sealing port 8. A blockage detector 6 is sleeved on the outer wall of the side pipe 31. Sealing ports 8 are respectively opened on the outer walls of one sides of the main pressure-taking pipe I 21 and the main pressure-taking pipe II 26. The sealing ports 8 are located above the side pipes 31. A probe wire 7 is wound around the surface of the blockage detector 6. The probe wires 7 correspond to the sealing ports 8 one by one. The probe wires 7 extend into the sealing ports 8.

[0031] As a preferred solution, furthermore, a first set of components 41 is sleeved on the outer wall of the first main pressure-taking pipe 21, and a second set of components 42 is sleeved on the outer wall of the second main pressure-taking pipe 26. Both the first set of components 41 and the second set of components 42 are located above the sealing port 8. A first connecting frame 43 is installed at the front end of the first set of components 41, and a second connecting frame 44 is installed at the rear end of the second set of components 42. The first connecting frame 43 and the second connecting frame 44 are arranged in parallel. A first connecting piece 410 is installed at the bottom end of the first connecting frame 43, and a second connecting piece 411 is installed at the bottom end of the second connecting frame 44. The first connecting piece 410 and the second connecting piece 411 are fixedly connected to the connecting plate 22. A top plate 45 and a bottom plate 46 are respectively installed between the first connecting frame 43 and the second connecting frame 44. The top plate 45 is located above the bottom plate 46. A reciprocating lead screw 47 is rotatably connected between the top plate 45 and the bottom plate 46. A sliding plate 48 is slidably connected between the first connecting frame 43 and the second connecting frame 44. The sliding plate 48 is threadedly sleeved on the outer wall of the reciprocating lead screw 47. A motor 49 is installed at the top end of the top plate 45, and the motor 49 is connected to the reciprocating lead screw 47.

[0032] As a preferred solution, furthermore, a first extension block 481 and a second extension block 483 are symmetrically installed at one end of the sliding plate 48 relative to the detection pipe fitting 2. A first clamp 482 is installed at one end of the first extension block 481 away from the sliding plate 48, and a second clamp 484 is installed at one end of the second extension block 483 away from the sliding plate 48. A first receiver 9 is clamped in the first clamp 482, and a second receiver 10 is clamped in the second clamp 484. The first receiver 9 is arranged opposite to the first main pressure-taking pipe 21, and the second receiver 10 is arranged opposite to the second main pressure-taking pipe 26. The first receiver 9 and the second receiver 10 correspond to the two probe wires 7 one by one, and the first receiver 9 and the second receiver 10 are respectively matched with the two probe wires 7.

[0033] As a preferred solution, furthermore, the backwashing mechanism 5 includes: a pulse valve 51 and a vacuum package 52. Pulse valves 51 are installed at the top ends of both the first main pressure-taking pipe 21 and the second main pressure-taking pipe 26, and a vacuum package 52 is installed on one side of the two pulse valves 51.

[0034] Working principle: When the electrical components appearing in this application are in use, they are externally connected to a power supply and a control switch. After the present utility model is installed, first check the installation and fixation as well as the safety protection of the present utility model, and then it can be used; when in use, two blockage detectors 6 are respectively sleeved on the outer walls of the two side pipes 31, and then their respective probe wires 7 are inserted into the corresponding sealing ports 8, so that the two probe wires 7 are respectively located in the main pressure-taking pipe one 21 and the main pressure-taking pipe two 26; the positive air volume in the pipeline 1 is measured through the pressure-taking vertical pipe one 24 and the middle pressure-taking pipe one 25, and the negative air volume in the pipeline 1 is measured through the pressure-taking vertical pipe two 28 and the middle pressure-taking pipe two 29. The incoming air respectively flows through the main pressure-taking pipe one 21 and the main pressure-taking pipe two 26 and enters their respective side pipes 31, and then enters the differential pressure transmitter 33 through the pressure guiding pipe 32. The air volume is measured through the differential pressure transmitter 33 and a calculation formula; while measuring, the motor 49 and the blockage detector 6 are started, so that the motor 49 drives the reciprocating lead screw 47 to rotate, and the reciprocating lead screw 47 drives the sliding plate 48 to slide between the connecting frame one 43 and the connecting frame two 44. The sliding plate 48 drives the extension block one 481 and the extension block two 483 to move accordingly, and drives the receiver one 9 and the receiver two 10 to move respectively through the fixture one 482 and the fixture two 484. The receiver one 9 detects the blockage of the main pressure-taking pipe one 21, and the receiver two 10 detects the blockage of the main pressure-taking pipe two 26; when the receiver one 9 and the receiver two 10 detect blockage in the pipe, the signals received by the receiver one 9 and the receiver two 10 become stronger and an alarm is given, and then the signal is fed back to the external control system. The pulse valve 51 is opened through the control system to blow back the blocked main pressure-taking pipe one 21 and the main pressure-taking pipe two 26 to dredge the internal blocked area.

[0035] Embodiment 2: Please refer to Figure 4 , a device for detecting the air volume of a wind-measuring pipeline, which is different from Embodiment 1 in that the pipeline 1 is a square pipeline and the connecting plate 22 is a straight plate structure.

[0036] The differential pressure transmitter, blockage detector, probe wire, receiver one, receiver two, pulse valve and vacuum package in this case are prior arts. As long as the differential pressure transmitter, blockage detector, probe wire, receiver one, receiver two, pulse valve and vacuum package meet the requirements of this case, they can be of any model and are not limited to a single model.

[0037] In the description of the present utility model, the term "a plurality of" refers to two or more, unless otherwise clearly defined. The orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model; terms such as "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] The above are only the preferred embodiments of the present utility model, and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An air volume detection device for a wind measurement duct, comprising: A pipeline (1), characterized in that a detection pipe fitting (2) is arranged inside the pipeline (1), the upper half of the detection pipe fitting (2) extends out of the pipeline (1), a wind measurement mechanism (3) is installed on one side of the upper half of the detection pipe fitting (2), a blockage measurement mechanism (4) is installed on the other side of the upper half of the detection pipe fitting (2), and a backflush mechanism (5) is installed at the top end of the detection pipe fitting (2).

2. The air volume detection device for a wind measurement duct according to claim 1, wherein The detection pipe fitting (2) includes: a main pressure tapping pipe one (21), a connecting plate (22) and a main pressure tapping pipe two (26). The connecting plate (22) is welded to the outer walls of the main pressure tapping pipe one (21) and the main pressure tapping pipe two (26). The bottom ends of the main pressure tapping pipe one (21) and the main pressure tapping pipe two (26) extend into the pipeline (1), and the connecting plate (22) is in contact with the outer wall of the pipeline (1).

3. The air volume detection device for a wind measurement duct according to claim 2, characterized in that, A bifurcated conduit one (23) is installed at the bottom end of the main pressure tapping pipe one (21). Pressure tapping vertical pipes one (24) are installed at the bottoms of both ends of the bifurcated conduit one (23). Middle pressure tapping pipes one (25) are installed at the opposite ends of the two pressure tapping vertical pipes one (24). A bifurcated conduit two (27) is installed at the bottom end of the main pressure tapping pipe two (26). Pressure tapping vertical pipes two (28) are installed at the bottoms of both ends of the bifurcated conduit two (27). Middle pressure tapping pipes two (29) are installed at the opposite ends of the two pressure tapping vertical pipes two (28).

4. The air volume detection device for a wind measurement duct according to claim 2, characterized in that, The pipeline (1) is a circular pipeline, and the connecting plate (22) is an arc-shaped plate structure.

5. The air volume detection device for a wind measurement duct according to claim 2, characterized in that, The pipeline (1) is a square pipeline, and the connecting plate (22) is a straight plate structure.

6. The air volume detection device for the wind measurement duct according to claim 2, wherein The wind measurement mechanism (3) includes: a side pipe (31), a pressure guiding pipe (32) and a differential pressure transmitter (33). Side pipes (31) are installed on the outer walls of one sides of the main pressure tapping pipe one (21) and the main pressure tapping pipe two (26). The side pipes (31) are located outside the pipeline (1). The main pressure tapping pipe one (21) and the main pressure tapping pipe two (26) are respectively in internal communication with the two side pipes (31). A pressure guiding pipe (32) is installed at the end of the side pipe (31). The side pipe (31) is in internal communication with the pressure guiding pipe (32). The pressure guiding pipe (32) is connected to a differential pressure transmitter (33).

7. The air volume detection device for the wind measurement pipeline according to claim 6, wherein, The blockage measurement mechanism (4) includes: a blockage detector (6), a probe wire (7) and a sealing port (8). A blockage detector (6) is sleeved on the outer wall of the side pipe (31). Sealing ports (8) are opened on the outer walls of one sides of the main pressure tapping pipe one (21) and the main pressure tapping pipe two (26). The sealing ports (8) are located above the side pipe (31). The probe wire (7) is wound around the surface of the blockage detector (6). The probe wire (7) corresponds to the sealing port (8) one by one, and the probe wire (7) extends into the sealing port (8).

8. The air volume detection device for a wind measurement duct according to claim 7, characterized in that, A first kit (41) is sleeved on the outer wall of the first main pressure-taking pipe (21), and a second kit (42) is sleeved on the outer wall of the second main pressure-taking pipe (26). Both the first kit (41) and the second kit (42) are located above the sealing port (8). A first connecting frame (43) is installed at the front end of the first kit (41), and a second connecting frame (44) is installed at the rear end of the second kit (42). A first connecting piece (410) is installed at the bottom end of the first connecting frame (43), and a second connecting piece (411) is installed at the bottom end of the second connecting frame (44). The first connecting piece (410) and the second connecting piece (411) are fixedly connected to the connecting plate (22). A top plate (45) and a bottom plate (46) are respectively installed between the first connecting frame (43) and the second connecting frame (44). The top plate (45) is located above the bottom plate (46). A reciprocating lead screw (47) is rotatably connected between the top plate (45) and the bottom plate (46). A sliding plate (48) is slidably connected between the first connecting frame (43) and the second connecting frame (44). The sliding plate (48) is threadedly sleeved on the outer wall of the reciprocating lead screw (47). A motor (49) is installed at the top end of the top plate (45), and the motor (49) is connected to the reciprocating lead screw (47).

9. The air volume detection device for a wind measurement duct according to claim 8, characterized in that, An extension block one (481) and an extension block two (483) are symmetrically installed at one end of the sliding plate (48) relative to the detection pipe fitting (2). A clamp one (482) is installed at one end of the extension block one (481) away from the sliding plate (48), and a clamp two (484) is installed at one end of the extension block two (483) away from the sliding plate (48). A receiver one (9) is clamped in the clamp one (482), and a receiver two (10) is clamped in the clamp two (484). The receiver one (9) is arranged opposite to the first main pressure-taking pipe (21), and the receiver two (10) is arranged opposite to the second main pressure-taking pipe (26). The receiver one (9) and the receiver two (10) correspond to the two probe wires (7) one by one, and the receiver one (9) and the receiver two (10) are respectively matched with the two probe wires (7).

10. The air volume detection device for a wind measurement duct according to claim 2, characterized in that, The back-blowing mechanism (5) includes: a pulse valve (51) and a vacuum chamber (52). Pulse valves (51) are installed at the top ends of the first main pressure-taking pipe (21) and the second main pressure-taking pipe (26), and a vacuum chamber (52) is installed on one side of the two pulse valves (51).

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