Dustproof wind speed sensor

Abstract

The utility model discloses a dustproof wind speed sensor belongs to wind speed measurement technical field. Including the wind cup, the rotating shaft, the base and set up between the wind cup and the base's labyrinth seal component, the labyrinth seal component is by with the wind cup synchronous rotation's labyrinth ring and with the fixed base's labyrinth seat constitutes, and the zigzag labyrinth passage with multiple gyration parts is formed between two, when the airflow carries the dust and attempts to invade, the labyrinth passage passes through the extension invasion path and multiple change airflow direction, effectively consumes the airflow kinetic energy, promotes the dust particle settlement to block its into the bearing area on the basis of keeping traditional wind speed sensor appearance, through the innovative labyrinth seal structure has promoted the dustproof capacity significantly, especially suitable for desert, construction site and so on dust environment, effectively solved the bearing easy to jam, the sensor short life technical problem.

Description

Technical Field

[0001] This utility model relates to the field of wind speed measurement technology, and in particular to a dustproof wind speed sensor. Background Technology

[0002] As a core device for continuous wind speed measurement, wind speed sensors directly impact the safety and efficiency of multiple fields through their measurement accuracy and stable operation. In desert regions, wind speed monitoring is irreplaceable: First, real-time monitoring of wind speed and direction allows for early warning of sandstorms, providing a critical window for evacuating people and protecting property, thus reducing disaster losses. Second, wind speed data enables the study of wind and sand movement patterns, providing a basis for the planning and construction of sand control and stabilization projects, helping to curb desert expansion. Third, monitoring wind speeds along highways and railways allows for timely understanding of road conditions, assisting transportation departments in implementing measures such as road closures and speed limits to ensure traffic safety. Fourth, wind speed data can be used to determine the site selection for wind power stations and photovoltaic power stations, while also monitoring extreme wind speeds to protect energy equipment and extend its service life.

[0003] In construction site settings, wind speed monitoring is equally crucial: on the one hand, strong winds can generate enormous thrust on high-altitude work equipment such as booms and tower cranes. If the wind speed exceeds the safety threshold, it can easily cause catastrophic accidents such as equipment overturning, threatening the lives of construction workers; on the other hand, construction sites commonly have facilities such as scaffolding and temporary billboards that are susceptible to wind loads. Real-time wind speed monitoring can provide early warnings of risks and prevent safety hazards and property losses caused by facility collapse.

[0004] Currently, for wind speed measurement in the aforementioned sandstorm conditions, two main types of sensors are used on the market: one is a common mechanical wind speed sensor (mainly cup-type), which uses the rotation of the cup to drive the bearing to rotate, and then converts the rotation speed into wind speed data; the other is an ultrasonic wind speed sensor, which uses an exposed sensing probe to emit and receive ultrasonic signals, and uses the time difference of ultrasonic wave propagation to calculate the wind speed.

[0005] However, existing technologies have significant drawbacks in dusty environments, making it difficult to meet the requirements for stable operation. For ordinary mechanical anemometers, their rotating parts typically employ a "cap-type" structure, which only provides basic waterproofing and cannot prevent dust intrusion. Dust can easily enter the bearing area from the bottom of the sensor, causing the bearing to jam or even stop, ultimately leading to sensor failure and damage. For ultrasonic anemometers, their sensing probes need to be exposed to the external environment to ensure signal transmission, but dust can easily cover the probes, preventing the ultrasonic signals from being transmitted or received normally. This not only significantly reduces measurement accuracy but can also cause the sensor to fail completely in severe cases. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a dustproof wind speed sensor that uses a labyrinth channel to consume the kinetic energy of dust-laden airflow, causing sand and dust to settle, thereby effectively preventing them from intruding into the bearing and significantly improving the reliability and lifespan of the sensor in a dusty environment.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A dustproof wind speed sensor is provided, comprising: a wind cup, a labyrinth sealing assembly, a rotating shaft, and a base; the rotating shaft is disposed in the middle of the inside of the wind cup, and a bearing is correspondingly mounted on the upper end of the base; the wind cup is rotatably covered on the base through the cooperation of the inner ring of the rotating shaft and the bearing.

[0009] A labyrinth sealing assembly is provided between the wind cup and the base. The labyrinth sealing assembly includes a labyrinth ring and a labyrinth seat that cooperate with each other. The labyrinth ring is connected to the wind cup and rotates synchronously with it. The labyrinth seat is fixedly connected to the base. The labyrinth ring is arranged around the outside of the labyrinth seat. A tortuous labyrinth channel is formed between the labyrinth ring and the labyrinth seat to block sand and dust from entering the bearing area by extending the path of sand and dust intrusion and consuming airflow energy. The wind cup can rotate around the rotation axis under the action of wind force. Wind speed is measured by the correspondence between the rotation speed of the rotation axis and the wind speed.

[0010] Preferably, the maze ring is a thin-walled annular structure, and the outer wall of the maze seat is provided with at least two annular grooves spaced apart along the axial direction. The annular grooves cooperate with the inner sidewall of the maze ring to form a maze channel. The maze channel forms multiple continuous rotating parts through the annular grooves, so that the sand and dust carried by the airflow are deposited in the maze channel due to the tortuous path and kinetic energy consumption.

[0011] Preferably, the cross-sectional shape of the annular groove is one of a rectangle, a trapezoid, or an arc, and the depth of the annular groove is 2mm-5mm and the width is 3mm-8mm.

[0012] Preferably, the upper end face of the labyrinth ring is welded and fixed to the inner top wall of the wind cup.

[0013] Preferably, an annular gap is formed between the lower edge of the wind cup and the upper surface of the base. The width of the annular gap is 0.3mm-1.2mm, and the entrance of the annular gap is flared outward to guide the external airflow smoothly into the annular gap and then flow into the labyrinth channel.

[0014] Preferably, the upper end of the base has an upward-opening sealed chamber, the lower end of the labyrinth seat is embedded in the sealed chamber and fixedly connected to the inner wall of the sealed chamber, and the bearing is disposed at the lower end of the labyrinth seat and located in the sealed chamber.

[0015] Preferably, the bearing is a deep groove ball bearing or an angular contact bearing, with its inner ring interference fit with the rotating shaft and its outer ring connected and fixed to the labyrinth seat.

[0016] Preferably, the lower part of the base is integrally formed with a mounting flange, and the mounting flange has a plurality of bolt mounting holes evenly distributed along the circumference.

[0017] Preferably, the base is further provided with a rotation speed detection module, which is used to detect the rotation speed of the rotating shaft in a non-contact manner.

[0018] Preferably, the wind cup, labyrinth ring, and rotating shaft are made of lightweight, corrosion-resistant material.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a dustproof anemometer. By setting a labyrinth sealing assembly formed by a labyrinth ring and a labyrinth seat between the anemometer and the base, it can effectively extend the path of sand and dust intrusion and consume airflow energy, significantly improving the dustproof effect and preventing sand and dust from entering the bearing area and causing wear and failure. At the same time, this structural design ensures the flexibility and stability of the anemometer rotation, improves the accuracy and reliability of wind speed measurement, and extends the service life of the sensor. In addition, the sensor has a simple and compact structure, low manufacturing cost, and convenient installation and maintenance. It is particularly suitable for sandy environments such as deserts and construction sites, and has broad application prospects and practical value. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a dustproof wind speed sensor according to the present invention.

[0022] Figure 2 This is a schematic diagram of the air intake of the maze passage of this utility model 1.

[0023] In the diagram: 1. Wind cup; 2. Labyrinth ring; 3. Labyrinth seat; 31. Annular groove; 4. Rotating shaft; 5. Bearing; 6. Base; 7. Labyrinth passage; 8. Mounting flange; 9. Rotation speed detection module.

[0024] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0025] 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.

[0026] The dustproof wind speed sensor of this utility model is based on a unique labyrinth sealing structure, which effectively solves the industry problems of bearing jamming and sensor failure in sandy environments.

[0027] like Figure 1 and Figure 2 As shown, the sensor mainly includes a wind cup 1, a labyrinth sealing assembly, a rotating shaft 4, and a base 6. The wind cup 1 is a component that captures wind force, and the rotating shaft 4 is fixedly installed in its center. The base 6 serves as a supporting body, and a bearing 5 is installed on its upper part. The wind cup 1 can be flexibly rotated and mounted on the base 6 through the cooperation between the rotating shaft 4 and the inner ring of the bearing 5. When the wind blows the wind cup 1, the wind cup 1 drives the rotating shaft 4 to rotate together. The wind speed value can be calculated by detecting the rotation speed of the rotating shaft 4.

[0028] A labyrinth sealing assembly is provided between the wind cup 1 and the base 6. This labyrinth sealing assembly is the core structure for achieving the dustproof function. The labyrinth sealing assembly includes a labyrinth ring 2 and a labyrinth seat 3 that cooperate with each other. The labyrinth ring 2 is connected to the wind cup 1 and rotates synchronously with the wind cup 1. The labyrinth seat 3 is connected and fixed to the base 6. The labyrinth ring 2 is arranged around the outside of the labyrinth seat 3, and the two form a tortuous labyrinth channel 7. The labyrinth channel 7 structure can effectively block sand and dust from entering the area where the bearing 5 is located by extending the sand and dust intrusion path and consuming airflow energy.

[0029] When the wind cup 1 rotates under the action of wind, it drives the rotating shaft 4 to rotate synchronously. There is a fixed correspondence between the rotation speed of the rotating shaft 4 and the wind speed acting on the wind cup 1. By detecting the rotation speed of the rotating shaft 4, the wind speed can be measured.

[0030] In a dusty environment, the external airflow carrying dust first contacts the outer surface of the wind cup 1. Some of the dust may be thrown out by the centrifugal force generated by the rotation of the wind cup 1, while the rest of the dust moves with the airflow towards the gap between the wind cup 1 and the base 6. When the airflow carrying dust reaches the gap between the wind cup 1 and the base 6, due to the presence of the labyrinth sealing assembly, the airflow is forced into the tortuous channel formed between the labyrinth ring 2 and the labyrinth seat 3. During the process of passing through these tortuous channels, the direction of airflow changes continuously, the flow velocity gradually decreases, and kinetic energy is consumed. As the airflow velocity decreases, the dust particles separate from the airflow due to inertia and are deposited at the corners of the labyrinth channel 7, unable to continue moving towards the bearing 5 area. Even if a small number of tiny dust particles can pass through the labyrinth channel 7, they will lose enough kinetic energy because the airflow velocity has been greatly reduced, and cannot have a substantial impact on the bearing 5. In this way, the labyrinth sealing assembly can effectively prevent dust from intruding into the bearing 5 area, ensuring that the bearing 5 always works in a clean environment, thereby ensuring the long-term stable operation of the sensor.

[0031] The labyrinth ring 2 adopts a circular thin-walled structure design, which can ensure sufficient strength without adding too much weight, and is conducive to improving the rotational sensitivity of the wind cup 1. The outer wall of the labyrinth seat 3 is provided with multiple annular grooves 31 at intervals along the axial direction. These annular grooves 31 cooperate with the inner sidewall of the labyrinth ring 2 to form a labyrinth channel 7. The cross-sectional shape of the annular grooves 31 can be selected in different forms such as rectangular, trapezoidal or arc according to specific needs to optimize the dustproof effect.

[0032] The upper end of the labyrinth ring 2 is fixedly connected to the inner top wall of the wind cup 1 by welding. This connection method can ensure a firm connection between the labyrinth ring 2 and the wind cup 1 and prevent loosening during long-term rotation. An annular gap is formed between the lower edge of the wind cup 1 and the upper end of the base 6. The entrance of the annular gap is flared outward. This design helps to guide the external airflow smoothly into the annular gap and then flow to the labyrinth channel 7, avoiding the reduction of dustproof effect caused by airflow turbulence.

[0033] The upper end of the base 6 has an upward-opening sealed chamber, and the lower end of the labyrinth seat 3 is embedded in the sealed chamber. The bearing 5 is located at the lower end of the labyrinth seat 3 and is located in the sealed chamber. This structural design can further improve the protection of the bearing 5 and prevent any tiny sand particles that may pass through the labyrinth channel 7 from contacting the bearing 5.

[0034] The bearing 5 can be a deep groove ball bearing 5 or an angular contact bearing 5. Its inner ring is interference-fitted with the rotating shaft 4, and its outer ring is connected and fixed to the labyrinth seat 3 to ensure that the rotating shaft 4 can rotate smoothly.

[0035] The lower part of the base 6 is integrally formed with a mounting flange 8. Multiple bolt mounting holes are evenly distributed along the circumference of the mounting flange 8, which makes it convenient to fix the sensor on various brackets or equipment.

[0036] The base 6 also houses a rotational speed detection module 9, which is used for non-contact detection of the rotational speed of the rotating shaft 4. This non-contact detection method avoids mechanical wear and improves detection accuracy and reliability.

[0037] The wind cup 1, labyrinth ring 2, and rotating shaft 4 are all made of lightweight, corrosion-resistant materials. This material selection ensures the sensitivity of the sensor and improves its corrosion resistance in harsh environments, thus extending its service life.

[0038] The working principle and usage method of a dustproof wind speed sensor in this embodiment are as follows:

[0039] This embodiment provides a dustproof wind speed sensor. When the wind cup 1 rotates under the action of wind, the airflow carrying sand and dust first passes through the annular gap between the wind cup 1 and the base 6. After entering, the airflow then enters the labyrinth channel 7 formed by the labyrinth ring 2 and the labyrinth seat 3. Inside the labyrinth channel 7, the airflow undergoes multiple turns, expansions, and contractions, and its kinetic energy is continuously consumed. The sand and dust particles carried in the air are deposited inside the labyrinth channel 7 due to kinetic energy attenuation and centrifugal force. After this multi-stage consumption and deposition process, the amount of sand and dust that ultimately reaches the bearing 5 area is extremely limited, thereby effectively protecting the bearing 5 from sand and dust damage and significantly extending the service life of the sensor in sandy environments.

[0040] In use, first, fix the sensor in an open, unobstructed location using the mounting flange 8 at the bottom of the base 6, ensuring the sensor axis is perpendicular to the ground. After installation, check the power connection and calibrate using a standard anemometer to establish an accurate rotation speed-wind speed correspondence. During daily use, the sensor will automatically monitor wind speed changes in real time. When the wind blows the wind cup 1 to rotate, the rotation speed detection module 9 converts the detected rotation speed of the rotating shaft 4 into a wind speed value and transmits it to the data acquisition system via wired or wireless means. Regularly maintain and inspect the sensor. After turning off the power, check if the wind cup 1 rotates flexibly, clean any adhering sand and dust particles, and ensure the labyrinth sealing components are in normal condition. In extremely harsh sand and dust environments, the maintenance frequency can be increased appropriately. If a decrease in measurement accuracy or a malfunction is found, repair it promptly.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is used only to illustrate the technical solution of this utility model, and is not intended to limit the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the protection scope of this utility model.

[0042] In the description of this utility model, it should be understood that the terms "upper", "lower", "upper end", "lower end", "upper surface", "lower surface", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A dustproof wind speed sensor, comprising: The device comprises a wind cup (1), a labyrinth sealing assembly, a rotating shaft (4), and a base (6); the rotating shaft (4) is located in the middle of the wind cup (1), and a bearing (5) is installed on the upper surface of the base (6). The wind cup (1) is rotatably mounted on the base (6) through the cooperation of the rotating shaft (4) and the inner ring of the bearing (5); characterized in that a labyrinth sealing assembly is provided between the wind cup (1) and the base (6), the labyrinth sealing assembly comprising a labyrinth ring (2) and a labyrinth seat (3) that cooperate with each other, the labyrinth ring... (2) Connected to the wind cup (1) and rotated synchronously with it, the maze seat (3) is connected and fixed to the base (6), the maze ring (2) is arranged around the outside of the maze seat (3); and a tortuous maze channel (7) is formed between the maze ring (2) and the maze seat (3), which is used to block the sand and dust from invading the bearing (5) area by extending the sand and dust intrusion path and consuming air kinetic energy; the wind cup (1) can rotate around the rotating shaft (4) under the action of wind force, and the wind speed is measured by the correspondence between the rotation speed of the rotating shaft (4) and the wind speed.

2. The dustproof wind speed sensor as described in claim 1, characterized in that: The maze ring (2) is a thin-walled annular structure. The outer wall of the maze seat (3) is provided with at least two annular grooves (31) spaced apart along the axial direction. The annular grooves (31) cooperate with the inner sidewall of the maze ring (2) to form a maze channel (7). The maze channel (7) forms multiple continuous rotating parts through the annular grooves (31), so that the sand and dust carried by the airflow are deposited in the maze channel (7) due to the tortuous path and kinetic energy consumption.

3. A dustproof wind speed sensor as described in claim 2, characterized in that: The cross-sectional shape of the annular groove (31) is one of rectangle, trapezoid or arc, and the depth of the annular groove (31) is 2mm-5mm and the width is 3mm-8mm.

4. A dustproof wind speed sensor as described in claim 1, characterized in that: The upper end face of the maze ring (2) is welded and fixed to the inner top wall of the wind cup (1).

5. A dustproof wind speed sensor as described in claim 1, characterized in that: The lower edge of the wind cup (1) and the upper surface of the base (6) form an annular gap. The width of the annular gap is 0.3mm-1.2mm, and the entrance of the annular gap is flared outward to guide the external airflow smoothly into the annular gap and then flow into the maze channel (7).

6. A dustproof wind speed sensor as described in claim 1, characterized in that: The upper end of the base (6) is provided with an upward-opening sealed chamber. The lower end of the labyrinth seat (3) is embedded in the sealed chamber and fixedly connected to the inner wall of the sealed chamber. The bearing (5) is located at the lower end of the labyrinth seat (3) and is located in the sealed chamber.

7. A dustproof wind speed sensor as described in claim 1, characterized in that: The bearing (5) is a deep groove ball bearing (5) or an angular contact bearing (5), with its inner ring having an interference fit with the rotating shaft (4) and its outer ring being connected and fixed to the labyrinth seat (3).

8. A dustproof wind speed sensor as described in claim 1, characterized in that: The lower part of the base (6) is integrally formed with a mounting flange (8), and the mounting flange (8) has multiple bolt mounting holes evenly distributed along the circumference.

9. A dustproof wind speed sensor as described in claim 1, characterized in that: The base (6) is also equipped with a rotation speed detection module (9), which is used to detect the rotation speed of the rotating shaft (4) in a non-contact manner.

10. A dustproof wind speed sensor as described in claim 1, characterized in that: The wind cup (1), labyrinth ring (2) and rotating shaft (4) are made of lightweight corrosion-resistant material.

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