Anemorumbometer wind direction calibrating device based on straight path wind tunnel

Abstract

The utility model provides an anemorumbometer wind direction calibrating device based on a straight path wind tunnel, which comprises a main shaft body, a sleeving locking part, a fixed table, a dial, an indicating assembly and a locking screw, and is characterized in that the main shaft body is provided with an extending end capable of extending into the wind tunnel and an external end positioned outside the wind tunnel; the fixed table is fixed with the extending end and is provided with an end surface for fixing an anemorumbometer; the dial is connected to the external end in a rotatable mode. The indication assembly is fixed on the first locking piece and is used for indicating scales on the dial; and the locking screw is detachably connected with the dial and the main shaft body, and has a second locking state for limiting the rotation of the dial relative to the first locking piece and a second releasing state for allowing the rotation of the dial relative to the first locking piece. The operable parts are all located outside the wind tunnel, verification work of the anemorumbometer can be completed through external operation, operation of workers is facilitated, and verification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor detection, in particular to a wind speed and direction calibration device of an anemometer based on a straight wind tunnel. Background Art

[0002] Wind tunnel test refers to an aerodynamic experimental method that places an object model in a wind tunnel to study the interaction between gas flow and the object model in order to understand the aerodynamic characteristics of the actual object model. Among them, the metrological verification of the wind speed sensor is also completed in the wind tunnel. During the verification, a cylinder is first established as the basis of the wind tunnel test pipeline system, and then a controllable airflow is formed in the cylinder through a power device. The wind speed and direction sensor is installed in the wind tunnel test section for verification.

[0003] The existing reference announcement number is: CN115420908A Chinese invention patent application, which discloses a wind direction calibration device for an ocean anemometer, including a base, a rotating round table is arranged in the center of the base, and the upper end of the rotating round table is connected to the mounting seat; a motor II and an angle encoder II are arranged in the base, and the motor II drives and connects to the rotating round table, and the angle encoder II is connected to the rotating round table; a rotating ring table is arranged around the mounting seat on the upper surface of the base, and an electric telescopic rod is vertically arranged on the rotating ring table, and the top of the electric telescopic rod is connected to a gripper; a motor I and an angle encoder I are arranged in the base, and the motor I drives and connects to the rotating ring table, and the rotating ring table is connected to the angle encoder I; it also includes a controller for controlling the wind tunnel frequency converter and collecting the wind direction output of the ocean anemometer, and the controller is connected to the motor I, the angle encoder I, the gripper, the motor II and the angle encoder II.

[0004] The above technology has the following problems: the wind tunnel is a closed environment with great limitations, and the existing wind direction calibration equipment is difficult to use in the wind tunnel. Utility Model Content

[0005] In view of this, it is necessary to provide a wind direction calibration device for anemometers and anemometers based on a straight wind tunnel, which can calibrate the wind direction of anemometers and anemometers in a wind tunnel.

[0006] A wind speed and direction calibration device of an anemometer based on a straight wind tunnel, comprising: a main shaft body, having an insertion end capable of being inserted into the wind tunnel and an external end located outside the wind tunnel;

[0007] The sleeve locking part comprises a sleeve member, a first locking member and a second locking member, wherein the sleeve member is movably sleeved on the portion of the main shaft body located in the wind tunnel and extends outside the wind tunnel, the first locking member is threadedly connected to the portion of the sleeve member located outside the wind tunnel, and has a first locking state in which the sleeve member is fixed relative to the wind tunnel wall and a first releasing state in which the sleeve member is rotatable relative to the wind tunnel wall, the second locking member is threadedly connected to the portion of the main shaft body located in the wind tunnel, and has a restricted rotation state in which the main shaft body is contacted with the first locking member and the sleeve member is fixed relative to each other, and a permitted rotation state in which the main shaft body is allowed to rotate relative to the sleeve member;

[0008] A fixed platform, fixed to the insertion end, having an end surface for fixing an anemometer;

[0009] a dial rotatably connected to the external end;

[0010] an indicating assembly, fixed to the first locking member; and

[0011] A locking screw is detachably connected to the scale plate and the spindle body, and has a second locking state for limiting the scale plate from rotating relative to the first locking member and a second releasing state for allowing the scale plate to rotate relative to the first locking member.

[0012] Optionally, a handle may be detachably provided on the portion of the main shaft body located outside the wind tunnel.

[0013] Optionally, a threaded hole is provided on a portion of the main shaft body located outside the wind tunnel, and a screw matching the threaded hole is fixed to one end of the handle.

[0014] Optionally, a plurality of fixing screw holes are opened at the end of the insertion end, and a plurality of docking screw holes are opened correspondingly on the fixing platform. The fixing platform and the insertion end are detachably fixed by simultaneously penetrating the fixing screw holes and the docking screw holes with bolts.

[0015] Optionally, a protrusion is formed on the external end, and a groove matching the protrusion is formed at a corresponding position of the dial.

[0016] Optionally, a connecting screw hole is opened in the center of the dial, and a screw hole corresponding to the connecting screw hole is opened at the end of the external end. The dial and the external end are detachably fixed by simultaneously penetrating the connecting screw hole and the screw hole through the locking screw.

[0017] Optionally, the indicating assembly includes an extension rod and an indicating piece, wherein the extension rod is fixed to the outer surface of the first locking piece and extends radially along the first locking piece, and the indicating piece is fixed to an end of the extension rod away from the first locking piece for indicating the scale on the dial.

[0018] Optionally, the indicator includes a pointer, one end of which is fixed to the extension rod, and the pointer is perpendicular to the dial and is used to indicate the scale of the dial corresponding to it.

[0019] Optionally, the indicator includes a laser indicator, which is fixed on the extension rod, and the laser emission direction of the laser indicator is perpendicular to the scale plate.

[0020] The beneficial effects of the utility model are:

[0021] The utility model proposes a wind speed and direction calibration device for an anemometer based on a straight wind tunnel, which comprises a main shaft body, a sleeve locking part, a fixing platform, a dial, an indicating assembly and a locking screw, wherein the main shaft body has an extending end that can be extended into the wind tunnel and an external end located outside the wind tunnel; the sleeve locking part comprises a sleeve member, a first locking member and a second locking member, the sleeve member is movably sleeved on the part of the main shaft body located in the wind tunnel and extends to the outside of the wind tunnel, the first locking member is threadedly connected to the part of the sleeve member located outside the wind tunnel, and has a first locking state in which the sleeve member is fixed relative to the wind tunnel wall and a first releasing state in which the sleeve member can rotate relative to the wind tunnel wall, the second locking member is connected to the main shaft body, and the sleeve member is connected to the main shaft body. The threaded connection of the part located in the wind tunnel has a limited rotation state that contacts with the first locking piece and fixes the main shaft body and the sleeve piece relative to each other, and a permitted rotation state that allows the main shaft body to rotate relative to the sleeve piece. The fixed platform is fixed to the insertion end and has an end face for fixing the anemometer; the dial is rotatably connected to the external end; the indicating assembly is fixed to the first locking piece and is used to indicate the scale on the dial; the locking screw is detachably connected to the dial and the main shaft body, and has a second locked state that limits the rotation of the dial relative to the first locking piece and a second released state that allows the dial to rotate relative to the first locking piece. The operable parts are all located outside the wind tunnel, so that the calibration of the anemometer can be completed by external operation, which is convenient for the staff to operate and improves the calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 It is a structural schematic diagram of the utility model of the wind speed and direction calibration device of anemometer based on a straight wind tunnel when in use;

[0024] Figure 2 It is a structural schematic diagram of the wind speed and direction calibration device of the utility model based on the straight wind tunnel;

[0025] Figure 3 It is a cross-sectional schematic diagram of the wind speed and direction calibration device of the anemometer based on the straight wind tunnel of the utility model;

[0026] Wherein: 1-main shaft body, 2-first locking piece, 21-sleeve piece, 22-first locking piece, 23-second locking piece, 3-fixed platform, 4-dial, 5-indicator assembly, 51-extension rod, 52-indicator, 6-locking screw, 7-handle. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0028] like Figure 1-3As shown, an embodiment of the utility model provides a wind direction calibration device of an anemometer based on a straight wind tunnel, which comprises: a main shaft body 1, a sleeve locking part 2, a fixing platform 3, a dial 4, an indicating assembly 5 and a locking screw 6; the main shaft body 1 has an insertion end that can be inserted into the wind tunnel and an external end located outside the wind tunnel; the sleeve locking part 2 comprises a sleeve member 21, a first locking member 22 and a second locking member 23, the sleeve member 21 is movably sleeved on the part of the main shaft body 1 located in the wind tunnel and extends to the outside of the wind tunnel, the first locking member 22 is threadedly connected to the part of the sleeve member 21 located outside the wind tunnel, and has a first locking state in which the sleeve member 21 is fixed relative to the wind tunnel wall and a first releasing state in which the sleeve member 21 is rotatable relative to the wind tunnel wall, and the second locking member 23 is rotatable relative to the wind tunnel wall. 3 is threadedly connected to the part of the main shaft body 1 located in the wind tunnel, and has a restricted rotation state that contacts with the first locking piece 22 and fixes the main shaft body 1 and the sleeve piece 21 relatively, and a permitted rotation state that allows the main shaft body 1 to rotate relative to the sleeve piece 21. The fixing platform 3 is fixed to the insertion end and has an end face for fixing the anemometer; the dial 4 is rotatably connected to the external end; the indicating component 5 is fixed to the first locking piece 22 and is used to indicate the scale on the dial 4; the locking screw 6 is detachably connected to the dial 4 and the main shaft body 1, and has a second locked state that restricts the rotation of the dial 4 relative to the first locking piece 2 and a second released state that allows the rotation of the dial 4 relative to the first locking piece 2.

[0029] When in use, first fix the anemometer to be calibrated to the fixing platform 3 and connect it to an external display device for displaying the wind direction detected by the anemometer, rotate the fixing platform 3 so that the detected wind direction is displayed as zero on the external display device, operate the first locking member 22 so that the sleeve member 21 and the first locking member 22 clamp the wind tunnel wall so that the fixing platform 3 and the main shaft body 1 are relatively fixed, then operate the second locking member 23 so that the second locking member 23 contacts the first locking member 22, the main shaft body 1 and the sleeve member 21 are relatively fixed and cannot rotate, and then rotate the dial 4, make the indicating component 5 point to the zero degree of the dial 4, then operate the locking screw 6 to fix the dial 4 and the main shaft body 1 relatively, then operate the second locking piece 23 to allow the main shaft body 1 to rotate relatively, at this time, the fixed platform 3 and the indicating component 5 are integrated, rotate the indicating component 5 to make the indicating component 5 indicate a certain scale on the dial 4, if the external display device shows that the wind direction detected by the anemometer is consistent with the scale on the dial 4, it means that the anemometer is normal, if not, it means that there is a problem with the anemometer.

[0030] The utility model proposes a wind speed and direction calibration device for an anemometer based on a straight wind tunnel, which comprises a main shaft body, a sleeve locking part, a fixing platform, a dial, an indicating assembly and a locking screw, wherein the main shaft body has an extending end that can be extended into the wind tunnel and an external end located outside the wind tunnel; the sleeve locking part comprises a sleeve member, a first locking member and a second locking member, the sleeve member is movably sleeved on the part of the main shaft body located in the wind tunnel and extends to the outside of the wind tunnel, the first locking member is threadedly connected to the part of the sleeve member located outside the wind tunnel, and has a first locking state in which the sleeve member is fixed relative to the wind tunnel wall and a first releasing state in which the sleeve member can rotate relative to the wind tunnel wall, the second locking member is connected to the main shaft body, and the sleeve member is connected to the main shaft body. The threaded connection located in the wind tunnel has a limited rotation state that contacts with the first locking member and fixes the main shaft body and the sleeve member relative to each other, and a permitted rotation state that allows the main shaft body to rotate relative to the sleeve member. The fixed platform is fixed to the insertion end and has an end face for fixing the anemometer; the dial is rotatably connected to the external end; the indicating assembly is fixed to the first locking member and is used to indicate the scale on the dial; the locking screw is detachably connected to the dial and the main shaft body, and has a second locked state that limits the rotation of the dial relative to the first locking member, and a second released state that allows the dial to rotate relative to the first locking member. The operable parts are all located outside the wind tunnel, so that the calibration of the anemometer can be completed by external operation.

[0031] Specifically, a handle 7 can be detachably provided on the portion of the main shaft body 1 located outside the wind tunnel.

[0032] Furthermore, a threaded hole is provided on the portion of the main shaft body 1 located outside the wind tunnel, and a screw matching the threaded hole is fixed to one end of the handle 7 .

[0033] Furthermore, the end of the insertion end is provided with a plurality of fixing screw holes, and the fixing platform 3 is provided with a plurality of corresponding docking screw holes, and the fixing platform 3 and the insertion end are detachably fixed by bolts penetrating the fixing screw holes and the docking screw holes at the same time. The purpose of such a setting is that in actual work, the sizes of anemometers with different functions are different, and the compatibility of anemometers with different functions can be achieved by replacing the fixing platform that matches the anemometer.

[0034] There are many ways to fix the dial 4 to the external end. In some feasible embodiments, a convex block is formed on the external end, and a groove matching the convex block is formed at a corresponding position of the dial 4. When the convex block is engaged with the groove, the dial 4 and the external end are detachably fixed.

[0035] In this embodiment, a connecting screw hole is provided in the center of the dial 4, and a screw hole corresponding to the connecting screw hole is provided at the end of the external end. The dial 4 and the external end are detachably fixed by simultaneously penetrating the connecting screw hole and the screw hole through the locking screw 6.

[0036] Specifically, the indicating assembly 5 includes an extension rod 51 and an indicating member 52. The extension rod 51 is fixed to the outer surface of the first locking member 22 and extends radially along the first locking member 22. The indicating member 52 is fixed to one end of the extension rod 51 away from the first locking member 22 and is used to indicate the scale on the dial 4.

[0037] In some feasible embodiments, the indicator 52 includes a laser indicator, which is fixed on the extension rod 51, and the laser emission direction of the laser indicator is perpendicular to the scale plate 4. The laser emitted by the laser indicator forms a light spot on the scale plate 4, which is convenient for the user to identify the scale.

[0038] In this embodiment, the indicator 52 includes a pointer, one end of which is fixed to the extension rod 51 . The pointer is perpendicular to the scale plate 4 and is used to indicate the scale of the scale plate 4 .

[0039] When the utility model is used, first, the anemometer to be calibrated is fixed to the fixing platform 3 and connected to an external display device for displaying the wind direction detected by the anemometer, the fixing platform 3 is rotated to display the detected wind direction as zero on the external display device, the first locking piece 22 is operated to make the sleeve 21 and the first locking piece 22 clamp the wind tunnel wall, so that the fixing platform 3 and the main shaft body 1 are relatively fixed, and then the second locking piece 23 is operated to make the second locking piece 23 contact with the first locking piece 22, the main shaft body 1 and the sleeve 21 are relatively fixed and cannot be rotated, and then the sleeve 21 is rotated. The dial 4 is operated to make the indicating component 5 point to the zero degree of the dial 4, and then the locking screw 6 is operated to fix the dial 4 and the main shaft body 1 relatively. At this time, the second locking piece 23 is operated to allow the main shaft body 1 to rotate relatively. At this time, the fixed platform 3 and the indicating component 5 are integrated. The indicating component 5 is rotated to make the indicating component 5 indicate a certain scale on the dial 4. If the external display device shows that the wind direction detected by the anemometer is consistent with the scale on the dial 4, it means that the anemometer is normal. If not, it means that there is a problem with the anemometer.

[0040] The beneficial effects of the utility model are:

[0041] The utility model proposes a wind speed and direction calibration device for an anemometer based on a straight wind tunnel, which comprises a main shaft body, a sleeve locking part, a fixing platform, a dial, an indicating assembly and a locking screw, wherein the main shaft body has an extending end that can be extended into the wind tunnel and an external end located outside the wind tunnel; the sleeve locking part comprises a sleeve member, a first locking member and a second locking member, the sleeve member is movably sleeved on the part of the main shaft body located in the wind tunnel and extends to the outside of the wind tunnel, the first locking member is threadedly connected to the part of the sleeve member located outside the wind tunnel, and has a first locking state in which the sleeve member is fixed relative to the wind tunnel wall and a first releasing state in which the sleeve member can rotate relative to the wind tunnel wall, the second locking member is connected to the main shaft body, and the sleeve member is connected to the main shaft body. The threaded connection located in the wind tunnel has a limited rotation state that contacts with the first locking member and fixes the main shaft body and the sleeve member relative to each other, and a permitted rotation state that allows the main shaft body to rotate relative to the sleeve member. The fixed platform is fixed to the insertion end and has an end face for fixing the anemometer; the dial is rotatably connected to the external end; the indicating assembly is fixed to the first locking member and is used to indicate the scale on the dial; the locking screw is detachably connected to the dial and the main shaft body, and has a second locked state that limits the rotation of the dial relative to the first locking member, and a second released state that allows the dial to rotate relative to the first locking member. The operable parts are all located outside the wind tunnel, so that the calibration of the anemometer can be completed by external operation.

[0042] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A wind speed and direction calibration device based on a straight wind tunnel, characterized in that: include: The main shaft body has an insertion end capable of being inserted into the wind tunnel and an external end located outside the wind tunnel; The sleeve locking part comprises a sleeve member, a first locking member and a second locking member, wherein the sleeve member is movably sleeved on the portion of the main shaft body located in the wind tunnel and extends outside the wind tunnel, the first locking member is threadedly connected to the portion of the sleeve member located outside the wind tunnel, and has a first locking state in which the sleeve member is fixed relative to the wind tunnel wall and a first releasing state in which the sleeve member is rotatable relative to the wind tunnel wall, the second locking member is threadedly connected to the portion of the main shaft body located in the wind tunnel, and has a restricted rotation state in which the main shaft body is contacted with the first locking member and the sleeve member is fixed relative to each other, and a permitted rotation state in which the main shaft body is allowed to rotate relative to the sleeve member; A fixed platform, fixed to the insertion end, having an end surface for fixing an anemometer; a dial rotatably connected to the external end; an indicating assembly, fixed to the first locking member; as well as A locking screw is detachably connected to the scale plate and the spindle body, and has a second locking state for limiting the scale plate from rotating relative to the first locking member and a second releasing state for allowing the scale plate to rotate relative to the first locking member.

2. The wind speed and direction calibration device based on the straight wind tunnel according to claim 1 is characterized in that: A handle can be detachably provided on the part of the main shaft body located outside the wind tunnel.

3. The wind speed and direction calibration device based on the straight wind tunnel according to claim 2, characterized in that: A threaded hole is provided on the part of the main shaft body located outside the wind tunnel, and a screw matching the threaded hole is fixed on one end of the handle.

4. The wind speed and direction calibration device based on the straight wind tunnel according to claim 1, characterized in that: The end of the insertion end is provided with a plurality of fixing screw holes, and the fixing platform is provided with a plurality of corresponding butt screw holes. The fixing platform and the insertion end are detachably fixed by bolts penetrating the fixing screw holes and the butt screw holes at the same time.

5. The wind speed and direction calibration device of anemometer based on a straight wind tunnel according to claim 1, characterized in that: A convex block is formed on the external end, and a concave groove matching the convex block is formed at a corresponding position of the scale plate.

6. The wind speed and direction calibration device based on the straight wind tunnel according to claim 1, characterized in that: A connecting screw hole is provided in the center of the scale plate, and a screw hole corresponding to the connecting screw hole is provided at the end of the external end. The scale plate and the external end are detachably fixed by penetrating the connecting screw hole and the screw hole at the same time through the locking screw.

7. The wind speed and direction calibration device based on the straight wind tunnel according to claim 1, characterized in that: The indicating assembly includes an extension rod and an indicating piece. The extension rod is fixed to the outer surface of the first locking piece and extends radially along the first locking piece. The indicating piece is fixed to an end of the extension rod away from the first locking piece and is used to indicate the scale on the dial.

8. The wind speed and direction calibration device of anemometer based on a straight wind tunnel according to claim 7, characterized in that: The indicator comprises a pointer, one end of which is fixed to the extension rod. The pointer is perpendicular to the scale plate and is used to indicate the scale corresponding to the scale plate.

9. The wind speed and direction calibration device of anemometer based on a straight wind tunnel according to claim 7, characterized in that: The indicating member comprises a laser indicator, which is fixed on the extension rod, and the laser emitting direction of the laser indicator is perpendicular to the scale plate.

Images