Wind speed sensor for polar region automatic weather station

Abstract

The utility model relates to a wind speed sensor for an automatic polar weather station, which is characterized in that a reinforcing structure is fixedly connected inside an upper shell, and the reinforcing structure comprises a plurality of reinforcing ribs arranged around a wind speed transmission shaft. The reinforcing structure can improve the wind-resistant strength and the impact-resistant strength of the upper shell, so that the wind speed sensor can be prevented from being damaged by strong wind and sand and stones carried by the strong wind. In addition, a limiting piece fixedly connected with the wind speed transmission shaft is arranged in the upper shell, a cap body is arranged at the upper end of the lower shell, and an annular metal table fixed below the limiting piece can be embedded into an annular metal inner ring of the cap body. An annular blocking piece fixed below the limiting piece can be embedded into a gap between an annular metal outer ring and an annular metal inner ring of the cap body, so that multiple inlaying surrounding the wind speed transmission shaft is formed between the upper shell and the top of the cap body, and the wind speed transmission shaft can be effectively protected against freezing. Gravels and blown snow are prevented from entering the shaft body of the wind speed transmission shaft to damage the wind speed sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of wind speed sensors, in particular to a wind speed sensor used in a polar automatic weather station. Background Art

[0002] Setting up an unmanned automatic weather station is the main method for obtaining polar weather data. Polar automatic weather stations are equipped with multiple different types of sensors. The operating environment of various sensors used in polar automatic weather stations is different from that in non-polar areas. For example, Antarctica has the characteristics of low temperature and strong winds all year round (maximum can exceed 70m / s), while the Arctic has the characteristics of low temperature and high humidity. Among various sensors, wind speed sensor is an important instrument that can continuously detect the size of wind speed, which is an important part of automatic weather stations. The wind speed sensors currently used mainly include cup wind speed sensors and airplane head wind speed sensors. Both types of sensors measure wind speed by rotating the wind speed sensor, but these two types of sensors have common shortcomings when used in polar environments, that is, the sensor is easily frozen in low temperature and high humidity environments or blizzards, and the sensor is easily damaged under the action of strong winds, resulting in continuous abnormality or loss of wind speed data.

[0003] Most existing wind speed sensors are designed for use in non-polar automatic weather stations such as mines and ships. They do not take into account polar low temperatures, strong winds and other environments. When used in polar regions, the sensor's rotating structural parts are prone to freezing and damage, resulting in missing wind speed data. In non-polar environments, in the case of rime, rime and ice damage, in order to prevent the wind speed sensor from freezing, manual deicing is often used, or protective structures are added to the outside of the rotating structural parts, or electric heating is used to de-ice. When the wind speed sensor is damaged due to strong winds, it is directly replaced. However, the above solutions are not suitable for polar field environments for the following reasons: (1) The maintenance cycle of polar automatic weather stations exceeds one year. When the wind speed sensor freezes or is damaged, it cannot be manually deiced or replaced in time, resulting in long-term missing wind speed detection data due to freezing or damage. (2) Adding an external protective structure will affect the fluid structure of the wind speed sensor itself, thereby affecting the accuracy of the observation data. (3) The battery capacity of unmanned automatic weather stations is insufficient to support electric heating. In addition, electric heating may aggravate sensor freezing under long-term high humidity conditions. Therefore, the wind speed sensors of existing automatic weather stations cannot meet the requirements of wind speed observation in polar environments. Utility Model Content

[0004] The utility model aims to provide a wind speed sensor for a polar automatic weather station, so as to solve the technical problem that the existing wind speed sensors of the automatic weather station are prone to freezing and damage in polar environments.

[0005] The technical problem solved by the utility model can be achieved by adopting the following solutions:

[0006] A wind speed sensor for a polar automatic weather station comprises an upper shell and a lower shell installed below the upper shell, a wind cup is fixedly installed outside the upper shell, an upper end of a wind speed transmission shaft is fixedly connected to the interior of the upper shell, and a lower end extends into the lower shell, an annular magnetic steel is fixedly installed at the lower end of the wind speed transmission shaft, a control mainboard is fixedly installed inside the lower shell, a speed measuring coil matched with the annular magnetic steel is fixedly installed above the control mainboard, and an aviation plug is connected to the lower part through a cable;

[0007] A reinforcement structure is fixedly connected inside the upper shell, and the reinforcement structure includes a plurality of reinforcement ribs arranged around the wind speed transmission shaft;

[0008] A limiting plate fixed to the wind speed transmission shaft is installed inside the upper shell and below the reinforcement structure, an annular metal platform and an annular baffle surrounding the annular metal platform are fixedly installed below the limiting plate, a cap body is fixedly connected to the upper end of the lower shell, an annular metal outer ring and an annular metal inner ring located inside the annular metal outer ring and spaced apart from the annular metal outer ring are fixed on the cap body, the annular metal platform can be embedded in the annular metal inner ring, the annular baffle can be embedded in the gap between the annular metal outer ring and the annular metal inner ring, and the limiting plate, annular metal platform, annular metal outer ring and annular metal inner ring are all arranged around the wind speed transmission shaft.

[0009] Further: two layers of the reinforcement structure are provided, each layer of the reinforcement structure comprises a plurality of the reinforcement ribs.

[0010] Further: an upper limit platform is fixedly installed on the cap body, a lower limit plate is fixedly installed in the cap body, the annular metal outer ring is fixedly installed on the upper limit platform, and the annular metal inner ring is fixedly installed in the middle of the upper limit platform and the lower limit plate.

[0011] Furthermore: the outer surface of the annular metal platform is in contact with the inner surface of the annular metal inner ring, and gaps are left between the annular baffle and the inner surface of the annular metal outer ring, the outer surface of the annular metal inner ring, and the upper surface of the upper limit platform.

[0012] Further: the wind speed transmission shaft is connected to the annular metal inner ring through a bearing.

[0013] Further: the cross section of the wind cup is semicircular;

[0014] A T-shaped slot is provided on the outer surface of the upper shell, and a T-shaped connector is fixedly mounted on the wind cup. The T-shaped connector can be inserted into or pulled out of the T-shaped slot.

[0015] Further: the bottom of the upper shell is located below the lower reinforcement structure.

[0016] Furthermore: the surfaces of the upper shell, wind cup and cap body are all coated with an antifreeze coating.

[0017] Furthermore: the wind speed transmission shaft is detachably fixedly connected to the upper shell via a threaded fastener, and the upper end of the wind speed transmission shaft is connected to the cross slot of the upper shell via a cross buckle.

[0018] Further: the control main board is fixedly connected below the lower limit plate by a first bolt;

[0019] A lower shell limiting plate located inside the lower shell is fixedly connected below the lower limiting plate by a second bolt, and the aviation plug is plugged and fixed in the middle of the lower shell limiting plate.

[0020] The utility model is used for the wind speed sensor of the polar automatic weather station, and the reinforcing structure is fixedly connected inside the upper shell, and the reinforcing structure includes a plurality of reinforcing ribs arranged around the wind speed transmission shaft. The reinforcing rib-type reinforcing structure can improve the wind resistance and impact resistance of the upper shell of the wind speed sensor, so as to prevent the strong wind and the sand and stones carried by it from damaging the wind speed sensor. In addition, the utility model is used for the wind speed sensor of the polar automatic weather station, and the upper shell is provided with a limit plate fixedly connected with the wind speed transmission shaft, and the upper end of the lower shell is provided with a cap body, and the annular metal platform fixed below the limit plate can be embedded in the annular metal inner ring of the cap body, and the annular baffle fixed below the limit plate can be embedded in the gap between the annular metal outer ring and the annular metal inner ring of the cap body, and the limit plate, the annular metal platform, the annular metal outer ring, and the annular metal inner ring are all arranged around the wind speed transmission shaft, so that the upper shell and the top of the cap body form a multiple inlay around the wind speed transmission shaft, so that the wind speed transmission shaft part can be effectively protected from being easily frozen, and sand and snow blowing can be prevented from entering the shaft body of the wind speed transmission shaft and damaging the wind speed sensor. The wind speed sensor used for the polar automatic weather station of the utility model is not easy to be damaged or frozen, and is suitable for the polar environment with low temperature and strong wind all year round. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a wind speed sensor used in a polar automatic weather station according to the utility model;

[0023] Figure 2 , Figure 3 This is a schematic diagram of the internal structure of a wind speed sensor used in a polar automatic weather station according to the utility model;

[0024] Figure 4 yes Figure 2 A local enlarged view of point A;

[0025] Figure 5 yes Figure 3 A partial enlarged view of point B;

[0026] Main parts and numbers:

[0027] Upper shell: 1; Reinforcement rib: 11; Buckle: 12;

[0028] Lower shell: 2; Lower shell limit plate: 21;

[0029] Cap body: 3; upper limit plate: 31; lower limit plate: 32;

[0030] Wind cups: 4; T-type connectors: 41;

[0031] Wind speed transmission shaft: 5;

[0032] Ring magnet: 61; speed measuring coil: 62; control main board: 63; cable: 64; aviation plug: 65;

[0033] Limiting piece: 71; annular metal platform: 72; annular baffle: 73; annular metal outer ring: 74; annular metal inner ring: 75; bearing: 76;

[0034] First bolt: 81; second bolt: 82; fixing nut: 83; limiting nut: 84;

[0035] Base:9. DETAILED DESCRIPTION

[0036] In order to more clearly demonstrate the purpose, technical solutions and advantages of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] Example

[0038] Figures 1 to 3 FIG. 1 is a structural diagram of a wind speed sensor for a polar automatic weather station according to this embodiment. Figure 1-3As shown, the wind speed sensor includes an upper shell 1 and a lower shell 2 installed below the upper shell 1, a wind cup 4 is fixedly installed outside the upper shell 1, the upper end of the wind speed transmission shaft 5 is fixedly connected to the inside of the upper shell 1, and the lower end extends into the lower shell 2, a ring magnet 61 is fixedly installed at the lower end of the wind speed transmission shaft 5, a control mainboard 63 is fixedly installed inside the lower shell 2, a speed measuring coil 62 is vertically fixedly installed above the control mainboard 63, and an aviation plug 65 is connected to the control mainboard 63 through a cable 64; the control mainboard 63 is powered by the aviation plug 65. The speed measuring coil 62 is connected to the control mainboard 63 in communication, the speed measuring coil 62 is perpendicular to the ring magnet 61, and the speed measuring coil 62 cooperates with the ring magnet 61 to measure the wind speed based on the Hall principle.

[0039] When the wind speed sensor of this embodiment is used to measure wind speed, the wind blows the wind cup 4 to rotate and then drives the upper shell 1 to rotate. The rotation of the upper shell 1 drives the wind speed transmission shaft 5 to rotate. When the wind speed transmission shaft 5 rotates, the annular magnetic steel 61 at its lower end rotates accordingly. The annular magnetic steel 61 cooperates with the speed measuring coil 62 to obtain the measured wind speed.

[0040] The upper shell 1 is fixedly connected to a reinforcement structure, and the reinforcement structure includes a plurality of reinforcement ribs 11 arranged around the wind speed transmission shaft 5. Figure 2 , 3 As shown, there is an installation room in the center of the upper shell 1, and the installation room is arranged around the wind speed transmission shaft 5. One end of the reinforcing rib 11 is fixed to the inner surface of the shell of the upper shell 1, and the other end is fixed to the inner surface of the installation room.

[0041] like Figure 2-5 As shown, a limit plate 71 fixed to the wind speed transmission shaft 5 is installed inside the upper shell 1 and below the reinforcement structure, an annular metal platform 72 and an annular baffle 73 surrounding the annular metal platform 72 are fixedly installed below the limit plate 71, a cap body 3 is fixedly connected to the upper end of the lower shell 2, an annular metal outer ring 74 and an annular metal inner ring 75 located inside the annular metal outer ring 74 and spaced apart from the annular metal outer ring 74 are fixed on the cap body 3, the annular metal platform 72 can be embedded in the annular metal inner ring 75, the annular baffle 73 can be embedded in the gap between the annular metal outer ring 74 and the annular metal inner ring 75, the limit plate 71, the annular metal platform 72, the annular metal outer ring 74, and the annular metal inner ring 75 are all arranged around the wind speed transmission shaft 5.

[0042] This embodiment is used for the wind speed sensor of the polar automatic weather station. Its reinforcing rib-type reinforcement structure can improve the wind resistance and impact resistance of the upper shell 1 of the wind speed sensor, thereby preventing strong winds and the sand and stones they carry from damaging the wind speed sensor. In addition, the present embodiment is a wind speed sensor for a polar automatic weather station, wherein a limiting plate 71 fixedly connected to the wind speed transmission shaft 5 is arranged in the upper shell 1, and a cap body 3 is arranged at the upper end of the lower shell 2, and an annular metal platform 72 fixed below the limiting plate 71 can be embedded in the annular metal inner ring 75 of the cap body 3, and an annular baffle 73 fixed below the limiting plate 71 can be embedded in the gap between the annular metal outer ring 74 and the annular metal inner ring 75 of the cap body 3, the limiting plate 71, the annular metal platform 72, the annular metal outer ring 74, and the annular metal inner ring 75 are all arranged around the wind speed transmission shaft 5, thereby forming a multiple inlay around the wind speed transmission shaft 5 with the top of the upper shell 1 and the cap body 3, thereby effectively protecting the wind speed transmission shaft 5 from freezing, and preventing sand, stones, and blowing snow from entering the shaft body of the wind speed transmission shaft 5 and damaging the wind speed sensor.

[0043] In order to enhance the reinforcing effect of the reinforcing structure on the wind speed sensor, further, in this embodiment, as Figure 2 As shown, two layers of the reinforcement structure are provided, each layer of the reinforcement structure includes a plurality of the reinforcement ribs 11. In other embodiments, only one layer of the reinforcement structure may be provided to reduce the weight of the upper shell 1, thereby reducing the starting wind speed.

[0044] In order to further enhance the anti-freezing and anti-dust effects, further, such as Figure 2-5 As shown, the wind speed transmission shaft 5 is passed through the middle of the limit plate 71 and the annular metal platform 72, and there is no gap between the limit plate 71 and the annular metal platform 72. Further, the wind speed transmission shaft 5 is fixedly connected to the limit plate 71 by a fixing nut 83. Further, the wind speed transmission shaft 5, the limit plate 71, the annular metal platform 72, the annular metal outer ring 74, and the annular metal inner ring 75 are all concentrically arranged.

[0045] like Figure 2 , 3 As shown, further, an upper limit platform 31 is fixedly installed on the cap body 3, a lower limit plate 32 is fixedly installed inside the cap body 3, the annular metal outer ring 74 is fixedly installed on the upper limit platform 31, and the annular metal inner ring 75 is fixedly installed in the middle of the upper limit platform 31 and the lower limit plate 32 and passes through the upper limit platform 31 and the lower limit plate 32.

[0046] In order to reduce friction while ensuring sealing performance, further, the outer surface of the annular metal platform 72 is in contact with the inner surface of the annular metal inner ring 75, and a gap is left between the annular baffle 73 and the inner surface of the annular metal outer ring 74, the outer surface of the annular metal inner ring 75, and the upper surface of the upper limit platform 31.

[0047] Furthermore, low-temperature lubricating oil is applied to the contact point between the annular metal platform 72 and the annular metal inner ring 75 to reduce friction and further prevent dust from entering.

[0048] Further, such as Figure 4 , 5 The wind speed transmission shaft 5 is connected to the annular metal inner ring 75 through a bearing 76. In order to prevent the bearing 76 from moving up and down along the wind speed transmission shaft 5.

[0049] Furthermore, a limiting nut capable of limiting the axial movement of the bearing 76 is installed on the wind speed transmission shaft 5.

[0050] In order to enable the upper shell 1 to rotate relative to the cap body 3, an axial fixation is formed between the upper shell 1 and the cap body 3 to prevent the upper shell 1 from falling off from above the cap body 3. Figure 4 , 5 As shown, a buckle 12 is provided at the lower end of the upper shell 1 , and the buckle 12 can be snapped into the slot of the upper limit platform 31 .

[0051] In order to prevent snow accumulation on the upper surface of the upper shell 1, further, as Figure 1-3 As shown, the top of the upper shell 1 is arc-shaped.

[0052] like Figure 1 , 2 As shown, in order to increase the contact area between the wind cup 4 and the upper shell 1 in this embodiment to enhance the wind resistance of the wind cup 4, the cross section of the wind cup 4 is further semicircular. In other embodiments, the wind cup 4 may also be a circular wind cup.

[0053] In order to facilitate the rapid replacement of the wind cup in case of subsequent damage and increase the convenience of maintenance, the wind cup 4 is further detachably fixedly connected to the upper shell 1. For the specific detachable fixed connection method, further, as Figure 1 , 2 As shown, a T-shaped slot is provided on the outer surface of the upper shell 1 , and a T-shaped connector 41 is fixedly mounted on the wind cup 4 , and the T-shaped connector 41 can be inserted into or pulled out of the T-shaped slot.

[0054] In order to provide a preliminary protection for the wind speed transmission shaft 5, further, as Figure 1 , 2As shown, the bottom of the upper shell 1 is located below the reinforcement structure of the lower layer.

[0055] In order to further reduce the possibility of freezing, further, the surfaces of the upper shell 1, the wind cup 4 and the cap body 3 are coated with an antifreeze coating.

[0056] In order to facilitate the disassembly of the wind speed transmission shaft 5, further, in this embodiment, the wind speed transmission shaft 5 is detachably fixedly connected to the upper housing 1 through a limit nut 84. In other embodiments, the upper end of the wind speed transmission shaft 5 can also be connected to the cross slot of the upper housing 1 through a cross buckle.

[0057] In order to ensure that the entire wind speed sensor forms a unified whole, the specific connection and fixing method of the control main board 63 and the lower shell limit plate 21 is further described as follows: Figure 2 , 3 As shown, the control main board 63 is fixedly connected to the bottom of the lower limit plate 32 by a first bolt 81; the bottom of the lower limit plate 32 is fixedly connected to the lower shell limit plate 21 located inside the lower shell 2 by a second bolt 82, and the aviation plug 65 is plugged and fixed in the middle of the lower shell limit plate 21.

[0058] Furthermore, the wind speed sensor also includes a base 9, and the lower shell 2 is detachably fixedly connected to the base 9 via limiting bolts.

[0059] When the wind speed sensor for polar automatic weather stations of this embodiment is used to measure wind speed, the wind blows the wind cup 4 to rotate and then drives the upper shell 1 to rotate. The rotation of the upper shell 1 drives the wind speed transmission shaft 5 to rotate. When the wind speed transmission shaft 5 rotates, the annular magnetic steel 61 at its lower end rotates accordingly. The annular magnetic steel 61 cooperates with the speed measuring coil 62 to obtain the measured wind speed. The wind speed sensor of this embodiment for polar automatic weather stations, its reinforcing rib-type reinforcement structure can improve the wind resistance and impact resistance of the upper shell 1 of the wind speed sensor, thereby preventing strong winds and the sand and gravel it carries from damaging the wind speed sensor. In addition, the wind speed sensor of this embodiment for polar automatic weather stations, its upper shell 1 and the top of the cap body 3 form multiple inlays around the wind speed transmission shaft 5, thereby effectively protecting the wind speed transmission shaft 5 from being easily frozen, and preventing sand and snow from entering the shaft body of the wind speed transmission shaft 5 and damaging the wind speed sensor.

[0060] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A wind speed sensor for a polar automatic weather station, comprising an upper shell (1) and a lower shell (2) installed below the upper shell (1), wherein a wind cup (4) is fixedly installed outside the upper shell (1), an upper end of a wind speed transmission shaft (5) is fixedly connected to the interior of the upper shell (1), and a lower end thereof extends into the interior of the lower shell (2), an annular magnetic steel (61) is fixedly installed at the lower end of the wind speed transmission shaft (5), a control mainboard (63) is fixedly installed inside the lower shell (2), a speed measuring coil (62) matched with the annular magnetic steel (61) is fixedly installed above the control mainboard (63), and an aviation plug (65) is connected to the lower end thereof via a cable (64); Features: A reinforcement structure is fixedly connected inside the upper shell (1), and the reinforcement structure comprises a plurality of reinforcement ribs (11) arranged around the wind speed transmission shaft (5); A limiting plate (71) fixed to the wind speed transmission shaft (5) is installed inside the upper shell (1) and below the reinforcement structure; an annular metal platform (72) and an annular baffle (73) surrounding the annular metal platform (72) are fixedly installed below the limiting plate (71); a cap body (3) is fixedly connected to the upper end of the lower shell (2); an annular metal outer ring (74) and an annular metal inner ring (75) located inside the annular metal outer ring (74) and spaced apart from the annular metal outer ring (74) are fixed on the cap body (3); the annular metal platform (72) can be embedded in the annular metal inner ring (75); the annular baffle (73) can be embedded in the gap between the annular metal outer ring (74) and the annular metal inner ring (75); the limiting plate (71), the annular metal platform (72), the annular metal outer ring (74) and the annular metal inner ring (75) are all arranged around the wind speed transmission shaft (5).

2. The wind speed sensor for polar automatic weather station according to claim 1, Features: Two upper and lower layers of the reinforcement structure are provided, and each layer of the reinforcement structure includes a plurality of reinforcement ribs (11).

3. The wind speed sensor for polar automatic weather station according to claim 1, Features: An upper limit platform (31) is fixedly mounted on the cap body (3), a lower limit plate (32) is fixedly mounted inside the cap body (3), the annular metal outer ring (74) is fixedly mounted on the upper limit platform (31), and the annular metal inner ring (75) is fixedly mounted in the middle of the upper limit platform (31) and the lower limit plate (32).

4. The wind speed sensor for polar automatic weather station according to claim 3, Features: The outer surface of the annular metal platform (72) contacts the inner surface of the annular metal inner ring (75), and gaps are left between the annular baffle (73) and the inner surface of the annular metal outer ring (74), the outer surface of the annular metal inner ring (75), and the upper surface of the upper limit platform (31).

5. The wind speed sensor for polar automatic weather station according to claim 1, Features: The wind speed transmission shaft (5) is connected to the annular metal inner ring (75) via a bearing (76).

6. The wind speed sensor for polar automatic weather station according to claim 1, Features: The cross section of the wind cup (4) is semicircular; The outer surface of the upper shell (1) is provided with a T-shaped slot, and the wind cup (4) is fixedly mounted with a T-shaped connector (41), and the T-shaped connector (41) can be inserted into or removed from the T-shaped slot.

7. The wind speed sensor for polar automatic weather station according to claim 2, Features: The bottom of the upper shell (1) is located below the lower reinforcement structure.

8. The wind speed sensor for polar automatic weather station according to claim 1, Features: The surfaces of the upper shell (1), the wind cup (4) and the cap body (3) are all coated with an antifreeze coating.

9. The wind speed sensor for polar automatic weather station according to claim 1, Features: The wind speed transmission shaft (5) is detachably fixedly connected to the upper shell (1) via a threaded fastener, and the upper end of the wind speed transmission shaft (5) is connected to the cross slot of the upper shell (1) via a cross buckle.

10. The wind speed sensor for polar automatic weather station according to claim 3, Features: The control main board (63) is fixedly connected below the lower limit plate (32) via a first bolt (81); A lower housing limit plate (21) located inside the lower housing (2) is fixedly connected below the lower limit plate (32) via a second bolt (82), and the aviation plug (65) is plugged and fixed in the middle of the lower housing limit plate (21).

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