A fan duct air speed monitoring device
By designing elastic bands and fixing mechanisms, the problem of securing and sealing the anemometer on the fan duct was solved, enabling hole-free installation and high-precision wind speed monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU ZHAOHONG TESTING TECH CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-29
AI Technical Summary
In existing technologies, it is difficult to stably fix an anemometer to the outside of the fan duct, which leads to air leakage and errors in monitoring values, and it is necessary to make holes in the duct for fixing.
The anemometer body is secured to the outside of the pipe using elastic bands and fixing mechanisms. The rubber elastic bands and silicone horn covers achieve a hole-free fixation and sealed connection. Combined with a detachable U-shaped shell and rectangular frame structure, it can adapt to different pipe sizes.
This ensures the stable installation of the anemometer, prevents air leakage, improves monitoring accuracy and adaptability, and guarantees the precision and sealing of wind speed monitoring.
Smart Images

Figure CN224303709U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of wind speed monitoring equipment, specifically a wind speed monitoring device for wind turbine ducts. Background Technology
[0002] A fan is a device that drives gas flow through mechanical energy. It is widely used in ventilation, cooling, gas transportation, combustion air supply, industrial dust removal and other fields. In order to ensure the normal operation of ventilation equipment, improve efficiency, ensure safety and meet regulatory requirements, it is necessary to use a duct anemometer to detect the wind speed in the fan duct, so as to achieve accurate measurement and effective control of wind speed, thereby optimizing the performance of the ventilation system.
[0003] Currently, the anemometer is usually installed on the outside of the pipe with bolts, and then the detection rod is inserted into the duct to monitor the wind speed inside the pipe. However, since the pipe is usually thin, it is difficult to fix the anemometer stably to the outer wall of the fan pipe with bolts. Moreover, fixing it with bolts requires multiple holes to be made in the outer wall of the fan pipe, and bolts are not easy to seal the holes directly, which leads to air leakage inside the pipe and causes errors in the monitored values. Utility Model Content
[0004] The purpose of this invention is to provide a wind speed monitoring device for fan ducts to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A wind speed monitoring device for a wind turbine duct includes an anemometer body and a detection rod. An elastic band for fixing the anemometer body to the duct is detachably connected between the two sides of the anemometer body. A fixing mechanism for fixing the detection rod is provided on the top surface of the anemometer body.
[0007] Both sides of the anemometer body are fixedly connected to rectangular frames. Inside the rectangular frames are two symmetrical U-shaped shells. The upper U-shaped shell is slidably connected to the rectangular frame at the corresponding position, and the lower U-shaped shell is fixedly connected to the bottom side of the rectangular frame at the corresponding position. Both ends of the elastic band are fixedly connected to fixing rods that engage with the two U-shaped shells at the corresponding positions.
[0008] Furthermore, a sliding rod is fixedly connected between the two ends of the inner side of the rectangular frame, and a connecting block that slides through the sliding rod at the corresponding position is fixedly connected to the side of the upper U-shaped shell. A spring is fixedly connected between the connecting block and the rectangular frame at the corresponding position.
[0009] Furthermore, the elastic band is made of rubber.
[0010] Furthermore, the fixing mechanism includes two fixing plates arranged symmetrically at the top and bottom, and an arc-shaped plate is fixedly connected to one side of each of the two fixing plates facing each other. The lower fixing plate is fixedly connected to the top surface of the anemometer body.
[0011] Furthermore, both ends of the top surface of the lower fixing plate are fixedly connected to screws that penetrate through another fixing plate, and the top of the outer wall of the screws is screwed with nuts.
[0012] Furthermore, a second spring is fixedly installed between the two fixing plates and on the outside of the screw.
[0013] Furthermore, a rubber pad is detachably connected to the back of the anemometer body, and a horn cover is slidably inserted through the outer wall of the detection rod, the horn cover being made of silicone material.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. The elastic band can be used to firmly fix the anemometer body to the outside of the fan duct and support the detection rod. No bolts are needed for fixing and no holes need to be drilled in the duct. Therefore, air leakage in the duct can be avoided, making the anemometer body more accurate in monitoring the wind speed in the duct.
[0016] 2. By sliding the U-shaped shell on the corresponding rectangular frame, the elastic band can be removed from the anemometer body. Different lengths of elastic bands can be replaced according to the thickness of the fan duct. By making the elastic band with rubber material, the friction between the elastic band and the fan duct can be increased, and the anemometer body can be prevented from slipping off as much as possible.
[0017] 3. The universal rubber pad can buffer the pressure applied to the anemometer body by the elastic band, and the connection between the detection rod and the pipe is sealed by the horn cover, which can increase the sealing between the detection rod and the pipe, making the wind speed monitoring more accurate. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the anemometer body in this utility model;
[0020] Figure 3 This is a schematic diagram of the elastic band in this utility model;
[0021] Figure 4 This is an enlarged view of point A in this utility model;
[0022] Figure 5 This is a schematic diagram of the fixing mechanism in this utility model.
[0023] In the diagram: 1. Anemometer body; 11. Rubber pad; 2. Detection rod; 21. Horn cover; 3. Elastic band; 31. Fixing rod; 32. Rectangular frame; 33. U-shaped shell; 34. Connecting block; 35. Spring 1; 4. Fixing mechanism; 41. Fixing plate; 42. Arc plate; 43. Screw; 44. Spring 2. Detailed Implementation
[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1 - Figure 5 In this embodiment of the present invention, a wind speed monitoring device for a fan duct includes an anemometer body 1 and a detection rod 2. An elastic band 3 for fixing the anemometer body 1 to the duct is detachably connected between the two sides of the anemometer body 1. A fixing mechanism 4 for fixing the detection rod 2 is provided on the top surface of the anemometer body 1. A rectangular frame 32 is fixedly connected to both sides of the anemometer body 1. Two symmetrical U-shaped shells 33 are provided inside the rectangular frame 32. The upper U-shaped shell 33 is slidably connected to the rectangular frame 32 at the corresponding position, and the lower U-shaped shell 33 is fixedly connected to the bottom side of the rectangular frame 32 at the corresponding position. Both ends of the elastic band 3 are fixedly connected to fixing rods 31 that engage with the two U-shaped shells 33 at the corresponding positions.
[0026] Specifically, first, a hole is made in the fan duct. Then, one fixing rod 31 is placed between two U-shaped shells 33 at the same rectangular frame 32. The other fixing rod 31 and the elastic band 3 are then wrapped around the back of the fan duct. The other fixing rod 31 is then secured between two U-shaped shells 33 at another rectangular frame 32. At this point, the fan duct is located between the elastic band 3 and the anemometer body 1. Due to the elasticity of the elastic band 3, the anemometer body 1 can be firmly fixed to the outside of the fan duct (similar to leg wraps or knee pads used by athletes). Then, the detection rod 2 is inserted into the duct through the hole and the detection rod is inserted into the duct. The wire on rod 2 is connected to the anemometer body 1 (the connection between the anemometer body 1 and the detection rod 2 and between the two is existing technology and will not be described in detail here). Then, the detection rod 2 is fixed by the fixing mechanism 4. The detection rod 2 and the anemometer body 1 can be used together to monitor the wind speed in the pipeline in real time. The device can fix the anemometer body 1 firmly to the outside of the fan pipeline by the elastic band 3 and can support the detection rod 2. There is no need to use bolts for fixing and no need to drill holes in the pipeline. Therefore, it can avoid the occurrence of air leakage in the pipeline and make the monitoring of the wind speed in the pipeline by the anemometer body 1 more accurate.
[0027] Example 1
[0028] like Figure 3 and Figure 4 As shown, in this embodiment, a sliding rod is fixedly connected between the two ends of the inner side of the rectangular frame 32, and a connecting block 34 is fixedly connected to the side of the upper U-shaped shell 33, which slides through the sliding rod at the corresponding position. A spring 35 is fixedly connected between the connecting block 34 and the rectangular frame 32 at the corresponding position, and the elastic band 3 is made of rubber.
[0029] In this embodiment, the elastic band 3 can be detached from the anemometer body 1 by sliding the upper U-shaped shell 33 on the rectangular frame 32 at the corresponding position. Different lengths of elastic band 3 can be replaced according to the thickness of the fan duct. Moreover, the elastic band 3 will weaken after long-term use. The detachable elastic band 3 makes it easy to replace the elastic band 3 at any time. By making the elastic band 3 a rubber material, the friction between the elastic band 3 and the fan duct can be increased, and the slippage of the anemometer body 1 can be avoided as much as possible.
[0030] Example 2
[0031] like Figure 5As shown, in this embodiment, the fixing mechanism 4 includes two fixing plates 41 arranged symmetrically at the top and bottom. An arc-shaped plate 42 is fixedly connected to one side of each of the two fixing plates 41. The lower fixing plate 41 is fixedly connected to the top surface of the anemometer body 1. Both ends of the top surface of the lower fixing plate 41 are fixedly connected to a screw 43 that passes through the other fixing plate 41. A nut is screwed onto the top of the outer wall of the screw 43. A spring 44 is fixedly installed between the two fixing plates 41 and outside the screw 43.
[0032] In this embodiment, firstly, the two nuts are removed from the screws 43 at their corresponding positions. Then, the upper fixing plate 41 is lifted, and the detection rod 2 is inserted into the pipe between the two arc plates 42. Then, the upper fixing plate 41 is loosened. At this time, the two arc plates 42 clamp the detection rod 2 under the elastic action of the two springs 44. Then, the two nuts are screwed onto the screws 43 at their corresponding positions, so that the two arc plates 42 tightly clamp the detection rod 2.
[0033] Example 3
[0034] like Figure 2 As shown, in this embodiment, a rubber pad 11 is detachably connected to the back of the anemometer body 1, and a horn cover 21 is slidably slidably through the outer wall of the detection rod 2. The horn cover 21 is made of silicone.
[0035] In this embodiment, the general-purpose rubber pad 11 can buffer the pressure applied to the anemometer body 1 by the elastic band 3. After the detection rod 2 is inserted into the pipe, the horn cover 21 is moved towards the pipe until the horn cover 21 is tightly attached to the pipe. Since the horn cover 21 is made of silicone, it can be attached to the outside of the pipe, thereby increasing the sealing between the detection rod 2 and the pipe and making the wind speed monitoring more accurate.
[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A wind speed monitoring device for a fan duct, comprising an anemometer body (1) and a detection rod (2), characterized in that, The anemometer body (1) is detachably connected between its two sides by an elastic band (3) for fixing the anemometer body (1) to the pipe, and the top surface of the anemometer body (1) is provided with a fixing mechanism (4) for fixing the detection rod (2). The anemometer body (1) has rectangular frames (32) fixedly connected to both sides. The rectangular frames (32) have two symmetrical U-shaped shells (33) inside. The upper U-shaped shell (33) is slidably connected to the rectangular frame (32) at the corresponding position, and the lower U-shaped shell (33) is fixedly connected to the bottom side of the rectangular frame (32) at the corresponding position. The elastic band (3) has fixed rods (31) at both ends that engage with the two U-shaped shells (33) at the corresponding positions.
2. The fan duct wind speed monitoring device according to claim 1, characterized in that, A sliding rod is fixedly connected between the two ends of the inner side of the rectangular frame (32). A connecting block (34) that slides through the sliding rod at the corresponding position is fixedly connected to the side of the upper U-shaped shell (33). A spring (35) is fixedly connected between the connecting block (34) and the rectangular frame (32) at the corresponding position.
3. The fan duct wind speed monitoring device according to claim 2, characterized in that, The elastic band (3) is made of rubber.
4. The fan duct wind speed monitoring device according to claim 1, characterized in that, The fixing mechanism (4) includes two fixing plates (41) arranged symmetrically on the top and bottom. An arc plate (42) is fixedly connected to one side of each of the two fixing plates (41). The fixing plate (41) located below is fixedly connected to the top surface of the anemometer body (1).
5. The fan duct wind speed monitoring device according to claim 4, characterized in that, Both ends of the top surface of the lower fixing plate (41) are fixedly connected to a screw (43) that passes through another fixing plate (41), and a nut is screwed onto the top of the outer wall of the screw (43).
6. The fan duct wind speed monitoring device according to claim 5, characterized in that, A second spring (44) is fixedly installed between the two fixed plates (41) and on the outside of the screw (43).
7. The fan duct wind speed monitoring device according to claim 6, characterized in that, A rubber pad (11) is detachably connected to the back of the anemometer body (1), and a horn cover (21) slides through the outer wall of the detection rod (2). The horn cover (21) is made of silicone.