Probe calibration auxiliary device and calibration device

Abstract

The embodiment of the invention discloses a probe calibration auxiliary device and a calibration device.A probe comprises a first connecting rod and a second connecting rod, the first connecting rod is connected with the second connecting rod, a sleeve is arranged on the second connecting rod, the probe calibration auxiliary device comprises a splitter plate, the two sides of the splitter plate are provided with a splitter face and a drainage plane respectively, the splitter face is connected with the drainage plane, and the drainage plane is connected with the splitter plate. The drainage plane is provided with an installation groove, under the condition that the first connecting rod is contained in the installation groove, the outer wall face of the first connecting rod coincides with the drainage plane, the second connecting rod extends out of the drainage plane, and the drainage plane is parallel to the axis of the sleeve. The splitter plate is embedded with the first connecting rod while separating the air flow, so that the first connecting rod is prevented from protruding out of the drainage plane to influence the speed and direction of the air flow, the stability of the air flow on one side of the drainage plane is improved, the consistency of the air flow in contact with the sleeve and the air flow flowing out of a model area is ensured, and the accuracy of calibrating the air flow in the sleeve is improved; and the reliability of the probe calibration result is ensured.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of measuring devices, and in particular to a probe calibration auxiliary device and a calibration device. Background Art

[0002] Probes, such as pneumatic pressure probes, are sensor tools for measuring the internal flow field of machinery. Probes of various shapes and specifications need to be customized for different testing requirements. Among them, curved probes are one of the commonly used probe types.

[0003] When calibrating the probe, the airflow ejected from the nozzle of the wind tunnel device forms a flow field. The central area of ​​the flow field can form a model area with stable velocity field and direction field. The axis of the probe's sleeve is aligned with the center line of the model area so that the extension direction of the sleeve is the same as the flow direction of the airflow. The probe can accurately measure the airflow data in the model area, thereby calibrating the probe.

[0004] In the related art, since the curved structure of the probe extends into the model area, the velocity field and direction field of the airflow in the model area are disturbed, thereby affecting the calibration airflow of the measuring hole on the casing, reducing the accuracy of the probe calibration, and further affecting the accuracy of the probe measurement. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, a first aspect of the present invention provides a probe calibration auxiliary device.

[0007] A second aspect of the present invention provides a calibration device.

[0008] In view of this, according to the first aspect of the technical solution of the present application, a probe calibration auxiliary device is proposed, the probe includes a first connecting rod and a second connecting rod, the first connecting rod is connected to the second connecting rod, the second connecting rod is provided with a sleeve, the probe calibration auxiliary device includes a diverter plate, the two sides of the diverter plate are respectively provided with a diverter surface and a drainage plane, the diverter surface is connected to the drainage plane, and the drainage plane is provided with an installation groove. When the first connecting rod is accommodated in the installation groove, the outer wall surface of the first connecting rod coincides with the drainage plane, the second connecting rod extends out of the drainage plane, and the drainage plane is parallel to the axis of the sleeve.

[0009] In some technical solutions provided in the present application, optionally, a diversion angle is formed between the diversion surface and the diversion plane, and the diversion angle is less than 30 degrees.

[0010] In some technical solutions provided in the present application, optionally, the probe calibration auxiliary device further includes a fixing block, the fixing block is connected to the diverter surface, and the mounting groove is located on the fixing block.

[0011] In some technical solutions provided in the present application, optionally, the probe further includes a third connecting rod, the third connecting rod is connected to the first connecting rod, a through hole is provided on the fixing block, the through hole is connected to the mounting groove, and the through hole is used to avoid the third connecting rod.

[0012] In some technical solutions provided in the present application, optionally, the probe calibration auxiliary device also includes a connecting piece, a positioning hole is provided on the fixing block, the positioning hole is connected to the mounting groove, and the connecting piece can pass through the positioning hole to abut against the first connecting rod.

[0013] In some technical solutions provided in the present application, optionally, the number of the connecting members and the number of the positioning holes are at least two respectively, and the positioning holes are respectively located at two ends of the installation groove.

[0014] In some technical solutions provided in the present application, optionally, the shape of the fixing block is a rectangle.

[0015] In some technical solutions provided in the present application, optionally, the diverter plate is in the shape of a body of revolution.

[0016] In some technical solutions provided in the present application, optionally, the diverter plate is further provided with a bottom surface, and the diverter surface and the drainage plane are respectively connected to the bottom surface, so that the boundary of the drainage plane is arched.

[0017] A second technical solution of the present application provides a calibration device, which includes a wind tunnel device and a probe calibration auxiliary device provided by any one of the above-mentioned first technical solutions.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] Since the splitter plate is embedded with the first connecting rod while separating the airflow, the first connecting rod is prevented from protruding from the drainage plane and affecting the speed and direction of the airflow, the stability of the airflow on one side of the drainage plane is improved, the consistency of the airflow contacted by the sleeve and the airflow flowing out of the model area is ensured, the accuracy of the calibration airflow in the sleeve is improved, and the reliability of the probe calibration result is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1 One of the structural schematic diagrams of a probe calibration auxiliary device according to an embodiment of the present application;

[0022] Figure 2A second structural diagram of a probe calibration auxiliary device according to an embodiment of the present application;

[0023] Figure 3 A third structural diagram of a probe calibration auxiliary device according to an embodiment of the present application;

[0024] Figure 4 A fourth structural diagram of a probe calibration auxiliary device according to an embodiment of the present application;

[0025] Figure 5 A fifth structural diagram of a probe calibration auxiliary device according to an embodiment of the present application;

[0026] Figure 6 A schematic diagram of the structure of a probe according to an embodiment of the present application;

[0027] Figure 7 A schematic diagram of the structure of a calibration device according to an embodiment of the present application.

[0028] in, Figures 1 to 7 The corresponding relationship between the reference numerals and the component names is as follows:

[0029] 10 probe calibration auxiliary device, 100 diverter plate, 110 diverter surface, 120 drainage plane, 130 mounting groove, 140 bottom surface, 200 fixing block, 210 through hole, 220 positioning hole, 20 probe, 21 first connecting rod, 22 second connecting rod, 23 sleeve, 24 third connecting rod, 30 wind tunnel device. DETAILED DESCRIPTION

[0030] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0031] The first embodiment of the present application provides a probe calibration auxiliary device 10, such as Figures 1 to 6As shown, the probe 20 includes a first connecting rod 21 and a second connecting rod 22, the first connecting rod 21 is connected to the second connecting rod 22, and a sleeve 23 is provided on the second connecting rod 22. The probe calibration auxiliary device 10 includes a diverter plate 100, and a diverter surface 110 and a drainage plane 120 are respectively provided on both sides of the diverter plate 100. The diverter surface 110 is connected to the drainage plane 120, and a mounting groove 130 is provided on the drainage plane 120. When the first connecting rod 21 is accommodated in the mounting groove 130, the outer wall surface of the first connecting rod 21 coincides with the drainage plane 120, and the second connecting rod 22 extends out of the drainage plane 120, and the drainage plane 120 is parallel to the axis of the sleeve 23.

[0032] In this embodiment, the end of the first connecting rod 21 is connected to the end of the second connecting rod 22, and the first connecting rod 21 and the second connecting rod 22 extend in different directions, so that the probe 20 forms a curved structure. The sleeve 23 is arranged on the second connecting rod 22. Figure 4 The X-position arrow in the middle points to the axial direction of the sleeve 23. A measuring hole is formed inside the sleeve 23. The axial direction of the sleeve 23 is the same as the extension direction of the first connecting rod 21. Exemplarily, a plurality of sleeves 23 are arranged at intervals, the first connecting rod 21 and the second connecting rod 22 are perpendicular to each other, and the probe 20 can be a multi-hole right-angle bent probe 20.

[0033] Specifically, the sleeve 23 is connected to the inside of the first connecting rod 21 and the second connecting rod 22, a pipeline is provided in the measuring hole, and the airflow can enter the pipeline, and the pipeline extends to the detection component through the first connecting rod 21 and the second connecting rod 22, so as to detect the airflow. The bottom of the sleeve 23 is connected to the second connecting rod 22, and the top inner wall of the sleeve 23 is chamfered to increase the range of the airflow entering the pipeline.

[0034] The diverter surface 110 and the guide plane 120 are respectively located on both sides of the diverter plate 100, and the outer edge of the diverter surface 110 is connected to the outer edge of the guide plane 120, and they enclose to form the outer peripheral line of the diverter plate 100. When calibrating the probe 20, the diverter plate 100 is placed in the model area of ​​the flow field, and the guide plane 120 is parallel to the flow direction of the airflow. After the airflow contacts the outer peripheral line of the diverter plate 100, it is diverted into two paths, one of which flows on one side of the diverter surface 110 and changes its flow direction under the guidance of the diverter surface 110, and the other flows on one side of the guide plane 120 and maintains its original flow direction.

[0035] The bottom wall of the mounting groove 130 is located between the drainage plane 120 and the diverter surface 110, and the opening of the mounting groove 130 is located on the drainage plane 120. The first connecting rod 21 is adapted to the shape of the mounting groove 130. When the first connecting rod 21 is accommodated in the mounting groove 130, the first connecting rod 21 fits the inner wall of the mounting groove 130, and the outer wall surface of the first connecting rod 21 is located on the same plane as the drainage plane 120. The second connecting rod 22 extends in a direction away from the drainage plane 120, and the axis of the sleeve 23 is parallel to the drainage plane 120.

[0036] Since the splitter plate 100 is embedded with the first connecting rod 21 while separating the airflow, the first connecting rod 21 is prevented from protruding from the guide plane 120 and affecting the speed and direction of the airflow, thereby improving the stability of the airflow on one side of the guide plane 120, ensuring the consistency of the airflow contacted by the sleeve 23 and the airflow flowing out of the model area, improving the accuracy of the calibration airflow in the sleeve 23, and ensuring the reliability of the calibration result of the probe 20.

[0037] In some embodiments provided in this application, Figure 4 As shown, optionally, a diversion angle is formed between the diversion surface 110 and the diversion plane 120, and the diversion angle is less than 30 degrees.

[0038] In this embodiment, the diverter surface 110 is a plane, and a diverter angle is formed between the diverter surface 110 and the diversion plane 120. Figure 4 The middle angle A is the diversion angle, which is a smaller acute angle, so that the periphery of the diversion plate 100 forms a flat structure, reducing the diversion angle of the diversion surface 110 to the airflow, thereby reducing the turning angle of the airflow after encountering the diversion surface 110, reducing the resistance of the diversion plate 100 to the airflow, and reducing the force of the small airflow on the diversion plate 100, thereby improving the accuracy of the probe 20 calibration.

[0039] Exemplarily, the diversion angle is 5 degrees to 10 degrees, and the diversion angle may be 5 degrees, 8 degrees or 10 degrees.

[0040] In another embodiment, the splitter surface 110 is a curved surface, which reduces the flow resistance of the airflow along the splitter surface 110 .

[0041] In some embodiments provided in this application, Figure 1 and Figure 4 As shown, optionally, the probe calibration auxiliary device 10 further includes a fixing block 200 , the fixing block 200 is connected to the diverter surface 110 , and the mounting groove 130 is located on the fixing block 200 .

[0042] In this embodiment, the fixed block 200 is arranged on one side of the diverter surface 110, the diverter surface 110 surrounds the outer circumference of the fixed block 200, the fixed block 200 extends out of the diverter surface 110, and the bottom surface 140 of the mounting groove 130 extends to the fixed block 200. The fixed block 200 provides a setting space for the mounting groove 130, thereby reducing the thickness of the diverter plate 100, thereby reducing the weight of the probe calibration auxiliary device 10, and reducing the material cost of the probe calibration auxiliary device 10.

[0043] In some embodiments provided in this application, Figure 3 and Figure 4 As shown, optionally, the probe 20 further includes a third connecting rod 24 , which is connected to the first connecting rod 21 , and a through hole 210 is provided on the fixing block 200 , which is connected to the mounting groove 130 , and is used to avoid the third connecting rod 24 .

[0044] In this embodiment, the two ends of the first connecting rod 21 are connected to the second connecting rod 22 and the third connecting rod 24 respectively, and the extension direction of the third connecting rod 24 is opposite to that of the second connecting rod 22. The through hole 210 on the fixing block 200 extends to the bottom wall of the mounting groove 130, so that the through hole 210 is connected to the mounting groove 130. When the first connecting rod 21 is placed in the mounting groove 130, the third connecting rod 24 can pass through the through hole 210 and extend out of the fixing block 200, so as to avoid the third connecting rod 24 interfering with the installation of the first connecting rod 21, and ensure that the first connecting rod 21 can be embedded in the mounting groove 130.

[0045] In some embodiments provided in this application, Figure 1 , Figure 2 and Figure 3 As shown, optionally, the probe calibration auxiliary device 10 further includes a connecting piece, a positioning hole 220 is provided on the fixing block 200 , the positioning hole 220 is communicated with the mounting groove 130 , and the connecting piece can pass through the positioning hole 220 and abut against the first connecting rod 21 .

[0046] In this embodiment, the positioning hole 220 on the fixed block 200 extends to the side wall of the mounting groove 130, so that the positioning hole 220 is connected to the mounting groove 130, and the connecting piece can pass through the positioning hole 220 to abut against the first connecting rod 21. The connecting piece fixes the first connecting rod 21 in the mounting groove 130 by applying a pre-tightening force, thereby improving the stability of the first connecting rod 21 in the mounting groove 130 and preventing the airflow from causing the probe 20 to vibrate and affecting the accuracy of the probe 20 calibration.

[0047] For example, the connecting member may be a screw or a bolt, and the positioning hole 220 may be a threaded hole. After the probe 20 is placed in the mounting groove 130, the connecting member is brought into contact with the first connecting rod 21. After the calibration is completed, the connecting member is separated from the first connecting rod 21, so that the probe 20 can be taken out of the mounting groove 130.

[0048] In some embodiments provided in this application, Figure 1 , Figure 2 and Figure 3 As shown, optionally, the number of the connecting members and the number of the positioning holes 220 are at least two, respectively, and the positioning holes 220 are located at both ends of the mounting groove 130 .

[0049] In this embodiment, the number of the connecting member and the positioning holes 220 is the same, and the positioning holes 220 are respectively located at both ends of the mounting groove 130, so that the connecting member can simultaneously fix both ends of the first connecting rod 21, further improving the stability of the connecting rod in the mounting groove 130 and improving the accuracy of the probe 20 calibration.

[0050] In some embodiments provided in the present application, optionally, the fixing block 200 is in a rectangular shape.

[0051] In this embodiment, the mounting groove 130 extends in a straight line to form a strip groove, and the rectangular fixing block 200 is adapted to the shape of the mounting groove 130, which reduces the weight of the fixing block 200, reduces the material consumption of the fixing block 200, and saves the material cost of the probe calibration auxiliary device 10.

[0052] In some embodiments provided in the present application, optionally, the diverter plate 100 is in the shape of a body of revolution.

[0053] In this embodiment, the diverter plate 100 is shaped as a rotating body, so that the boundary of the diversion plane 120 is circular, which improves the smoothness of the outer peripheral shape of the diverter plate 100 and reduces the resistance of the outer periphery of the diverter plate 100 to the airflow. In addition, the area of ​​the diversion plane 120 is large, which expands the control range of the diversion, improves the stability of the airflow near the sleeve 23, and improves the accuracy of the calibration of the probe 20.

[0054] Exemplarily, the rotating body is formed by a rotating surface rotating around a rotating axis, and the shape of the rotating surface is an acute right triangle.

[0055] In some embodiments provided in this application, Figure 1 and Figure 4 As shown, optionally, the diverter plate 100 is further provided with a bottom surface 140, and the diverter surface 110 and the flow guiding plane 120 are respectively connected to the bottom surface 140, so that the boundary of the flow guiding plane 120 is arched.

[0056] In this embodiment, the top of the diverter plate 100 is shaped as a part of a rotating body, the bottom of the diverter plate 100 is a plane, the diverter surface 110 and the flow guiding surface 120 are respectively connected to the bottom surface 140, so that the boundary of the flow guiding surface 120 is an arch, and the bottom surface 140 forms an arch chord on the flow guiding surface 120. The height of the diverter plate 100 is reduced by the bottom surface 140, thereby reducing the weight of the probe calibration auxiliary device 10 and reducing the material cost of the probe calibration auxiliary device 10.

[0057] In a second aspect of the present application, an embodiment provides a calibration device, such as Figure 7 As shown, the calibration device includes a wind tunnel device 30 and a probe calibration auxiliary device 10 provided by any one of the first aspect embodiments described above.

[0058] In this embodiment, the airflow ejected from the nozzle of the wind tunnel device 30 forms a flow field. After the probe 20 is installed on the probe calibration auxiliary device 10, it is placed in the model area in the central area of ​​the flow field, so that the probe 20 can accurately measure the airflow data in the model area, thereby calibrating the probe 20.

[0059] It should be noted that, since the calibration device includes the probe calibration auxiliary device 10 provided in any of the above embodiments, it has all the beneficial technical effects of the above probe calibration auxiliary device 10, which will not be described here in detail to avoid repetition.

[0060] In a specific embodiment, the probe calibration auxiliary device 10 is mainly divided into: a diverter plate 100 and a fixed block 200 according to the function. The cross-sectional shape of the diverter plate 100 is a right triangle with a vertex angle of 8°, and its main function is to divide the airflow into two parts: one part continues along the original airflow direction to reach the calibrated measuring hole; the other part is diverted along the inclined surface of the device to other areas that do not affect the calibration of the probe 20. The fixed block 200 has a certain thickness, and a mounting groove 130 is provided on the fixed block 200, and two threaded holes are opened to fix the probe 20 on the probe calibration auxiliary device 10. When using this device to calibrate the measuring hole of the porous right-angle bent probe 20, the diverter plate 100 can ensure that the airflow in the space where the measuring hole of the porous right-angle bent probe 20 is located is almost not affected by the right-angle structure of the probe 20, making the calibration process of the probe 20 more scientific and reasonable, and ensuring the reliability of the calibration result.

[0061] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0063] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A probe calibration auxiliary device, characterized in that: The probe comprises a first connecting rod and a second connecting rod, wherein the first connecting rod is connected to the second connecting rod, and a sleeve is provided on the second connecting rod. The probe calibration auxiliary device comprises: A diverter plate, wherein a diverter surface and a drainage plane are respectively provided on both sides of the diverter plate, the diverter surface is connected to the drainage plane, and a mounting groove is provided on the drainage plane. When the first connecting rod is accommodated in the mounting groove, the outer wall surface of the first connecting rod coincides with the drainage plane, and the second connecting rod extends out of the drainage plane, and the drainage plane is parallel to the axis of the sleeve.

2. The probe calibration auxiliary device according to claim 1, characterized in that: A diversion angle is formed between the diversion surface and the diversion plane, and the diversion angle is less than 30 degrees.

3. The probe calibration auxiliary device according to claim 1, characterized in that: Also includes: A fixing block is connected to the diverter surface, and the mounting groove is located on the fixing block.

4. The probe calibration auxiliary device according to claim 3, characterized in that: The probe further comprises a third connecting rod, wherein the third connecting rod is connected to the first connecting rod. The fixing block is provided with a through hole, the through hole is communicated with the mounting groove, and the through hole is used to avoid the third connecting rod.

5. The probe calibration auxiliary device according to claim 3, characterized in that: Also includes: A connecting piece, wherein a positioning hole is provided on the fixing block, the positioning hole is communicated with the mounting groove, and the connecting piece can pass through the positioning hole and abut against the first connecting rod.

6. The probe calibration auxiliary device according to claim 5, characterized in that: The number of the connecting members and the number of the positioning holes are at least two, respectively, and the positioning holes are located at two ends of the mounting groove, respectively.

7. The probe calibration auxiliary device according to claim 3, characterized in that: The fixing block is in the shape of a rectangle.

8. The probe calibration auxiliary device according to any one of claims 1 to 7, characterized in that: The diverter plate is in the shape of a body of revolution.

9. The probe calibration auxiliary device according to any one of claims 1 to 7, characterized in that: The diverter plate is also provided with a bottom surface, and the diverter surface and the flow guiding plane are respectively connected to the bottom surface, so that the boundary of the flow guiding plane is arched.

10. A calibration device, characterized in that: include: Wind tunnel apparatus; A probe calibration aid as claimed in any one of claims 1 to 9.

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