CN114894430B - Installation accuracy measurement method of wind tunnel honeycomb device - Google Patents
Installation accuracy measurement method of wind tunnel honeycomb device Download PDFInfo
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- CN114894430B CN114894430B CN202210817699.5A CN202210817699A CN114894430B CN 114894430 B CN114894430 B CN 114894430B CN 202210817699 A CN202210817699 A CN 202210817699A CN 114894430 B CN114894430 B CN 114894430B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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Abstract
A method for measuring the installation accuracy of a wind tunnel honeycomb device belongs to the technical field of wind tunnels. The method comprises the following steps of 1, erecting a transportation platform and hoisting a transportation honeycomb device; step 2, establishing an installation reference, and installing the honeycombs in place according to a first-down sequence and a second-up sequence, wherein the first-down sequence is to install the bottom-most honeycombs, and after each layer is installed, the installation and adjustment of the upper-layer honeycombs are performed; and 3, establishing a measurement reference, and carrying out installation measurement by using the standard measurement core and the laser tracker. The invention aims to provide a method for measuring the installation accuracy of a wind tunnel honeycomb device, which solves the problems of improving the accuracy and the precision of installation measurement, can directly measure the axis deviation and the verticality of the honeycomb device, and improves the measurement efficiency and the accuracy; the installation accuracy index of the honeycomb device is ensured, and the method is particularly suitable for installation and measurement of large wind tunnel honeycomb devices and has high application value.
Description
Technical Field
The invention relates to a method for measuring the installation accuracy of a wind tunnel honeycomb device, and belongs to the technical field of wind tunnels.
Background
The stable section is used as one of the core sections of the wind tunnel and has the functions of improving the air flow straightness and reducing the turbulence degree. The honeycombs and the damping nets in the stable section enable airflow to be combed, and then a stable flow field with the same flow direction and uniform speed is formed in the test section after contraction and acceleration.
The honeycomb ware in the conventional wind-tunnel is installed in the wind-tunnel stable section internal flow way, and the stable section barrel directly provides support and fixed action for the honeycomb ware, and the measurement of installation back honeycomb ware adopts modes such as standard measuring stick and theodolite or lead weight to measure usually, relies on the straightness meet the requirements that hangs down of honeycomb and installation reference face to this judges the angular deviation of honeycomb ware axis and wind-tunnel main axis. However, the method has the disadvantages that the deviation angle of the honeycomb and the main axis of the wind tunnel is not directly measured in the measuring process, and the verticality deviation factor in the manufacturing process of the honeycomb device is introduced, so that the accuracy of the installation measuring result is influenced.
Therefore, it is desirable to provide a new method for measuring the installation accuracy of a wind tunnel honeycomb device to solve the above technical problems.
Disclosure of Invention
The present invention has been developed in an effort to provide a method for measuring mounting accuracy of a wind tunnel honeycomb device, which solves the problems associated with improving the accuracy and precision of mounting measurements, and a brief summary of the present invention is provided below in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or important part of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
a method for measuring the installation accuracy of a wind tunnel honeycomb device comprises the following steps:
and 3, establishing a measurement reference, and carrying out installation measurement by using the standard measurement core and the laser tracker.
Preferably: the step 1 of building a transportation platform is to weld and install a temporary pulley rail hoisting mechanism on the top of the inner cavity of the stable section cylinder.
Preferably: the standard measuring core in the step 3 is a round bar, and the cross section area of the round bar is the same as that of the honeycomb holes on the honeycomb device.
Preferably: the surface of the round bar is carved with an insertion depth mark reticle, the front end of the round bar is provided with a target holder, and a target ball is arranged on the target holder.
Preferably: the step 2 further comprises:
and 2.1, erecting the laser tracker in the stable section, establishing a main axis by taking a flow channel of the circular inner shell of the stable section as a measuring reference, and calibrating a vertical end face required by the installation of the honeycomb device by using the laser tracker and the target ball as an installation reference.
Step 2.2, prefabricating the honeycomb device for module units, welding a frame for reinforcing each unit by adopting a 3m thick steel plate, sealing and reinforcing the steel frame of the honeycomb device by utilizing the stability of a honeycomb structure,
2.3, sequentially installing the reinforced honeycombs from bottom to top, and installing the bottom-layer honeycombs;
step 2.4, after each layer of honeycombed devices is installed, the laser tracker is used for measuring, adjusting and aligning, then the installation and adjustment of the upper layer of honeycombed devices are carried out,
and 2.5, repeating the step 2.4 until the installation and alignment of the honeycomb device at the uppermost layer are finished.
Preferably: the step 3 further comprises:
and 3.1, erecting a laser tracker at the middle position between the honeycomb device and the contraction section, wherein the laser tracker is coaxially arranged with the main axis of the wind tunnel, an inner flow channel of the rear end bearing wall is used as a measurement reference to establish accurate main axis vertical plane reference and horizontal plane reference, and the main axis vertical plane reference and the horizontal plane reference are used as reference planes for installation and measurement of the honeycomb device.
Step 3.2, after the honeycomb device is installed in place, inserting a standard measuring core into honeycomb holes of the honeycomb device, adjusting the inserting depth of the standard measuring core in all the honeycomb holes to be consistent, and measuring target balls on a target seat at the front end of the standard measuring core by using a laser tracker to measure the pitching and yawing deviation values of the honeycomb holes;
and 3.3, when the pitching and yawing deviation values of the measured honeycomb holes are within the installation deviation requirement range, the axial deviation and the verticality of the installation of the honeycomb device in the stable section cylinder body meet the requirements, and the installation measurement of the honeycomb device is completed.
Preferably: and 3, the range of the installation deviation requirement of pitching and yawing of the honeycomb holes is less than or equal to 0.5 degrees.
The invention has the following beneficial effects:
1. according to the installation precision measuring method of the wind tunnel honeycomb device, the axis deviation and the perpendicularity of the honeycomb device can be directly measured, and the measuring efficiency and the measuring accuracy are improved;
2. the installation accuracy measuring method of the wind tunnel honeycomb device ensures the installation accuracy index of the honeycomb device, is particularly suitable for the installation measurement of large wind tunnel honeycomb devices, and has high application value in the installation measurement of related equipment.
Drawings
FIG. 1 is a schematic view of the installation of a transport platform lifting transport honeycomb unit of the present invention;
FIG. 2 is a schematic view of a laser tracker measurement of the present invention;
FIG. 3 is a schematic illustration of the installation of the honeycombs and stabilizing segment of the invention;
FIG. 4 is a schematic diagram of a standard measurement core of the present invention;
in the figure, 1-a transportation platform, 2-a honeycomb device, 3-a standard measuring core, 4-a laser tracker, 5-an insertion depth marking reticle, 6-a target holder, 7-a target ball, 8-a stable section, 9-a contraction section and 10-a rear end bearing wall.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and with reference to the accompanying drawings. It is to be understood that this description is made only by way of example and not as a limitation on the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The connection mentioned in the invention is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection and includes but is not limited to folding edge connection, rivet connection, bonding connection, welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to threaded connection, snap connection, pin connection, hinge connection and other conventional detachment modes, when the specific connection mode is not clearly limited, at least one connection mode can be found in the existing connection modes by default to realize the function, and the skilled person can select according to the needs. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.
The first embodiment is as follows: the present embodiment will be described with reference to fig. 1 to 4, and a method for measuring the installation accuracy of a wind tunnel honeycomb structure of the present embodiment:
step 2.1, erecting the laser tracker 4 in the stable section 8, establishing a main axis by taking a flow channel of the circular inner shell of the stable section 8 as a measuring reference, and calibrating a vertical end face required by the installation of the honeycomb device 2 by using the laser tracker 4 and the target ball 7 as an installation reference;
step 2.2, prefabricating the honeycomb device 2 for module units, welding a frame for reinforcing each unit by adopting a 3m thick steel plate, and sealing and reinforcing a steel frame of the honeycomb device 2 by utilizing the stability of a honeycomb structure;
2.3, sequentially installing the reinforced honeycombs 2 from bottom to top, and installing the bottom honeycombs 2;
step 2.4, after each layer of the honeycombs 2 is installed, the laser tracker 4 is used for measuring, adjusting and aligning, and then the honeycombs 2 on the previous layer are installed and adjusted;
and 2.5, repeating the step 2.4 until the installation and alignment of the honeycomb device 2 at the uppermost layer are finished.
the standard measuring core 3 is a round rod, and the cross-sectional area of the round rod is the same as that of honeycomb holes on the honeycomb device 2. The surface of the round bar is carved with an insertion depth marking reticle 5, meanwhile, the front end of the round bar is provided with a target holder 6, and a target ball 7 is arranged on the target holder 6.
The step 3 is specifically developed as follows:
step 3.1, erecting a laser tracker 4 at the middle position between the honeycomb device 2 and the contraction section 9, wherein the laser tracker 4 is coaxially arranged with a main axis of the wind tunnel, and an inner flow channel of a rear end bearing wall 10 is used as a measurement reference to establish accurate main axis vertical plane reference and horizontal plane reference which are used as reference planes for installation and measurement of the honeycomb device 2;
step 3.2, after the honeycomb device 2 is installed in place, inserting the standard measuring cores 3 into the honeycomb holes, adjusting the inserting depths of the standard measuring cores 3 in all the honeycomb holes to be consistent, and measuring target balls 7 on a target seat 6 at the front end of the standard measuring core 3 by using a laser tracker 4 to measure the pitching and yawing deviation values of the honeycomb holes;
and 3.3, when the pitching and yawing deviation values of the measured honeycomb holes are in the installation deviation requirement range, the axial deviation and the verticality of the installation of the honeycomb device 2 in the cylinder of the stabilizing section 8 meet the requirements, and the installation measurement of the honeycomb device 2 is completed.
The range of the installation deviation requirement of the pitching and yawing of the honeycomb holes is less than or equal to 0.5 degrees. According to the installation and measurement method, the installation and measurement of the honeycomb device 2 are completed, and the installation precision of the honeycomb device 2 in the stable section can be ensured.
The honeycomb device 2 is composed of a plurality of honeycomb blocks, the platform 1 is transported in the installation process, the honeycomb blocks are hoisted and transported in a fractional manner, and the honeycomb device is formed by the plurality of honeycomb blocks.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore, the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for measuring the installation accuracy of a wind tunnel honeycomb device is characterized by comprising the following steps:
step 1, erecting a transportation platform (1) and hoisting a transportation honeycomb device (2);
step 2, establishing an installation reference, and installing the honeycombs (2) in place according to a bottom-up sequence, wherein the bottom-up sequence is that the bottom-layer honeycombs (2) are installed first, each layer is adjusted and aligned, and then the installation and adjustment of the upper layer of honeycombs (2) are carried out;
step 3, establishing a measuring reference, and carrying out installation measurement by using a standard measuring core (3) and a laser tracker (4);
the step 2 further comprises: step 2.1, erecting a laser tracker (4) in a stable section (8), establishing a main axis by taking a flow channel of a circular inner shell of the stable section (8) as a measuring reference, and calibrating a vertical end face required by the installation of the honeycomb device (2) by using the laser tracker (4) and a target ball (7) as an installation reference;
step 2.2, prefabricating the honeycomb device (2) for module units, welding a frame for reinforcing each unit by adopting a 3m thick steel plate, and sealing and reinforcing the steel frame of the honeycomb device (2) by utilizing the stability of a honeycomb structure;
2.3, sequentially installing the reinforced honeycombs (2) from bottom to top, and installing the bottom-layer honeycombs (2) firstly;
2.4, after each layer of the honeycombs (2) is installed, measuring by using a laser tracker (4) for adjustment, and then installing and adjusting the upper layer of the honeycombs (2);
and 2.5, repeating the step 2.4 until the installation and alignment of the honeycomb device (2) at the uppermost layer are completed.
2. The method for measuring the installation accuracy of the wind tunnel honeycomb device according to claim 1, wherein: the step 1 is that the transportation platform (1) is erected, and specifically a temporary pulley rail hoisting mechanism is welded and installed on the top of the inner cavity of the cylinder body of the stable section (8).
3. The method for measuring the installation accuracy of the wind tunnel honeycomb device according to claim 2, wherein: the standard measuring core (3) in the step 3 is a round bar, and the cross sectional area of the round bar is the same as that of the honeycomb holes on the honeycomb device (2).
4. The method for measuring the installation accuracy of the wind tunnel honeycomb device according to claim 3, wherein: the surface of the round bar is carved with an insertion depth marking reticle (5), meanwhile, the front end of the round bar is provided with a target holder (6), and a target ball (7) is arranged on the target holder (6).
5. The method for measuring the installation accuracy of the wind tunnel honeycomb device according to claim 4, wherein: the step 3 further comprises:
step 3.1, erecting a laser tracker (4) at the middle position between the honeycomb device (2) and the contraction section (9), wherein the laser tracker (4) is coaxially arranged with the main axis of the wind tunnel, an inner flow channel of a rear end bearing wall (10) is used as a measurement reference to establish accurate main axis vertical plane reference and horizontal plane reference, and the main axis vertical plane reference and the horizontal plane reference are used as reference planes for installation and measurement of the honeycomb device (2);
step 3.2, after the honeycomb device (2) is installed in place, inserting a standard measuring core (3) into a honeycomb hole, adjusting the inserting depth of the standard measuring core (3) in all the honeycomb holes to be consistent, and then measuring a target ball (7) on a target seat (6) at the front end of the standard measuring core (3) by using a laser tracker (4), so that the pitching and yawing deviation values of the honeycomb hole can be measured;
and 3.3, when the pitching and yawing deviation values of the measured honeycomb holes are within the installation deviation requirement range, the axial deviation and the verticality of the installation of the honeycomb device (2) in the cylinder of the stabilizing section (8) are in accordance with the requirements, and the installation measurement of the honeycomb device (2) is completed.
6. The method for measuring the installation accuracy of the wind tunnel honeycomb device according to claim 5, wherein: and 3, the range of the installation deviation requirement of pitching and yawing of the honeycomb holes is less than or equal to 0.5 degrees.
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| CN101701837A (en) * | 2009-11-20 | 2010-05-05 | 中国航空工业空气动力研究院 | Air flow meter with high precision and large range |
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| CN101598628B (en) * | 2009-06-08 | 2011-08-31 | 浙江大学 | Thunderstorm downburst multifunction experiment simulator |
| CN102950781B (en) * | 2012-11-23 | 2015-04-15 | 成都飞机工业（集团）有限责任公司 | Hole making method of thin-walled honeycomb sandwich composite structural member |
| CN103264773B (en) * | 2013-04-26 | 2015-05-20 | 中国航空工业空气动力研究院 | Seasonal icing test bench |
| CN103364171B (en) * | 2013-07-15 | 2015-12-02 | 中国航天空气动力技术研究院 | A kind of high-speed wind tunnel model attitude video measuring system and measuring method |
| JP6733035B2 (en) * | 2016-07-22 | 2020-07-29 | 大連理工大学 | Measuring device for the surface shape of honeycomb core |
| CN109115123B (en) * | 2018-08-22 | 2020-04-10 | 西安空间无线电技术研究所 | Method for testing precision of profile of coated surface |
| CN110132523B (en) * | 2019-06-11 | 2020-05-05 | 中国科学院西北生态环境资源研究院 | Air rectifying device of wind sand wind tunnel |
| CN111505336B (en) * | 2020-04-29 | 2021-09-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | 10 nm-level particle detection device and method applied to ballistic target test |
| CN113074904B (en) * | 2021-06-07 | 2021-08-27 | 中国航空工业集团公司沈阳空气动力研究所 | Loading frame initial positioning device and method for wind tunnel balance calibration system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101701837A (en) * | 2009-11-20 | 2010-05-05 | 中国航空工业空气动力研究院 | Air flow meter with high precision and large range |
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