CN113664437A - Low-temperature wind tunnel solid guide vane assembling device and guide vane assembling method - Google Patents
Low-temperature wind tunnel solid guide vane assembling device and guide vane assembling method Download PDFInfo
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- CN113664437A CN113664437A CN202110936096.2A CN202110936096A CN113664437A CN 113664437 A CN113664437 A CN 113664437A CN 202110936096 A CN202110936096 A CN 202110936096A CN 113664437 A CN113664437 A CN 113664437A
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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Abstract
The application provides a low-temperature wind tunnel solid guide vane assembling device and a guide vane assembling method, wherein a first leaning column and a first positioning plate are arranged on the upper surface of one side of a base; the second leaning columns and the second positioning plate are arranged on the upper surface of the other opposite side of the base, and the first leaning columns and the second leaning columns are in one-to-one correspondence; the distance between the adjacent first leaning columns is the same, and the distance between the adjacent first leaning columns is the same as the installation distance between the adjacent flow deflectors; the distance between the adjacent first positioning plates is the same, and the distance between the adjacent first positioning plates is the same as the installation distance between the adjacent guide vanes; the distance between the adjacent second leaning columns is the same, and the distance between the adjacent second leaning columns is the same as the installation distance between the adjacent flow deflectors; the distance between the adjacent second positioning plates is the same. The device and the method effectively improve the assembling precision of the flow deflector.
Description
Technical Field
The application relates to the field of wind tunnels, in particular to a low-temperature wind tunnel solid guide vane assembling device and a guide vane assembling method.
Background
Since the advent of wind tunnels, significant progress has been made in aerodynamic research and aircraft development using wind tunnel technology, and its effects have become more and more significant. However, with the increasing size of the test object (such as an aircraft), the conventional wind tunnel test faces some serious challenges, wherein the most important is that the conventional wind tunnel cannot be tested in the full-size reynolds number, the high-reynolds number wind tunnel test is the premise and guarantee for realizing the fine aerodynamic design and accurate flight performance prediction of the aircraft, and the low-temperature wind tunnel is developed for solving the problem. The conventional carbon steel wind tunnel flow deflector is of a hollow structure with an inner skin, an outer skin and rib plates, and the flow deflector is directly welded and fixed with the elliptical ring shell. The low temperature wind-tunnel for preventing that the water conservancy diversion piece low temperature shrink warp influences the flow field, designs for solid structure, leaks cold for preventing that low temperature from conducting to the elliptical ring casing, has the inlayer clamping ring at elliptical ring casing internal design, and solid water conservancy diversion piece passes through upper junction plate, lower connecting plate and inlayer clamping ring welded fastening. The existing method for assembling the guide vane mainly comprises the following two methods:
(1) three groups of positioning plates with the shape of clamping grooves identical to the outer surface of the guide vane are adopted to fix the guide vane, the mounting angle of the guide vane is ensured through the clamping grooves, and the distance between the guide vanes is ensured through the distance between each clamping groove on the positioning plates, such as the domestic patent CN 201520728096.3;
(2) the guide vanes are fixed by three groups of guide sleeves with crescent holes, wherein the contour lines of the crescent holes are the same as the outer appearance surface of the guide vanes, the installation angle and the interval of the guide vanes are ensured by the crescent holes which are continuously and discontinuously arranged, and the vertical guide vanes are integrally installed in the elliptical ring shell after being integrally assembled and welded, as in the domestic patent CN 201510597549.8.
The above method has two problems: firstly, the verticality of a bus has deviation after the flow deflector is manufactured, the deviation exists in the cutting process of a clamping groove for fixing the flow deflector or a crescent hole, and the deviation of the two can not be avoided, so that the flow deflector and three groups of positioning plates or guide sleeves can not be completely attached, and the errors of the installation angle and the distance of the flow deflector are large; secondly, the welding deformation of the whole assembling and welding process of the guide vanes can cause large errors of the installation angle and the distance, or the hoisting deformation of the vertically placed guide vanes in the hoisting process after the assembling and welding process is finished can cause large errors of the installation angle and the distance. These problems all create turbulence that affects the flow field quality.
Disclosure of Invention
One of the purposes of the present application is to provide a low-temperature wind tunnel solid deflector assembling device and a deflector assembling method, which aim to improve the problem of low installation accuracy of the existing deflector.
The technical scheme of the application is as follows:
a low-temperature wind tunnel solid flow deflector assembling device comprises a base, a plurality of groups of first positioning assemblies and a plurality of groups of second positioning assemblies in one-to-one correspondence with the first positioning assemblies, wherein each group of first positioning assemblies comprises first leaning columns and first positioning plates which are spaced from each other, and each group of second positioning assemblies comprises second leaning columns and second positioning plates which are spaced from each other; the first leaning columns and the first positioning plates are parallelly arranged on the upper surface of one side of the base at intervals along the length direction of the base, and the distances between the adjacent first positioning components are the same; the second leaning columns and the second positioning plates are parallelly and alternately arranged on the upper surface of the other opposite side of the base along the length direction of the base, and the intervals between the adjacent second positioning assemblies are the same; the height of the first positioning plate is smaller than that of the first leaning columns, the height of the second positioning plate is smaller than that of the second leaning columns, and the first leaning columns and the second leaning columns are in one-to-one correspondence; the distance between the adjacent first leaning columns is the same, and the distance between the adjacent first leaning columns is the same as the installation distance between the adjacent guide vanes; the distance between the adjacent first positioning plates is the same, and the distance between the adjacent first positioning plates is the same as the installation distance between the adjacent guide vanes; the distance between the adjacent second leaning columns is the same, and the distance between the adjacent second leaning columns is the same as the installation distance between the adjacent flow deflectors; the distance between the adjacent second positioning plates is the same, and the distance between the adjacent second positioning plates is the same as the installation distance between the adjacent guide vanes.
As a technical scheme of the application, the base comprises two long I-shaped steels, a plurality of short I-shaped steels and a plurality of pier studs; the pier columns are arranged in two rows at intervals in parallel; the two long I-shaped steels are respectively arranged on the tops of the two rows of pier columns in parallel at intervals, a plurality of groups of first positioning assemblies are arranged on the upper surface of one long I-shaped steel along the length direction, and a plurality of groups of second positioning assemblies are arranged on the upper surface of the other long I-shaped steel along the length direction; and two ends of the short I-shaped steels are respectively and vertically connected between the two long I-shaped steels, and the adjacent short I-shaped steels are arranged in parallel at intervals.
As a technical scheme of this application, the pier stud includes steel pipe or lattice column.
As a technical solution of the present application, the first leaning column includes an i-beam, and a length of the first leaning column is greater than a length of an outer surface arc length of the 1/2 flow deflector; the second leaning column comprises I-shaped steel, and the length of the second leaning column is larger than 1/2 of the length of the outer surface arc length of the flow deflector.
As a technical scheme of this application, the first line of leaning on between post and the corresponding second lean on the post with the straight line that first locating component place is perpendicular mutually, first locating plate with corresponding line between the second locating plate with the straight line that second locating component place is the skew.
As a technical scheme of this application, first locating plate, second locating plate is the steel block that thickness is more than or equal to 30mm, and first locating plate, the height of second locating plate is greater than the thickness of water conservancy diversion piece.
As a technical solution of the present application, one side of each of the flow deflectors is clamped between the second support pillar and the second positioning plate in the corresponding second positioning assembly of the same group by a wedge, and the other side of each of the flow deflectors is clamped between the first support pillar and the first positioning plate in the corresponding first positioning assembly of the same group; the outer profile of the flow deflector is in line contact with the first leaning column and the second leaning column respectively, the end of the flow deflector which is in an arc shape is arranged downwards and is in contact with the first positioning plate, the second positioning plate and the long I-shaped steel wire respectively, and the end of the flow deflector which is in a sharp corner is arranged upwards.
As a technical scheme of this application, with same the guide vane looks joint the second is leaned on the interval between post and the second locating plate to be greater than first lean on the interval between post and the first locating plate.
The method for assembling the flow deflector adopts the low-temperature wind tunnel solid flow deflector assembling device for assembling, and comprises the following steps of:
step one, after the low-temperature wind tunnel solid deflector assembling device is assembled and welded, an inner layer connecting ring is arranged around and assembled on the periphery of the low-temperature wind tunnel solid deflector assembling device in a surrounding mode; adjusting the relative position of the inner layer connecting ring and the low-temperature wind tunnel solid deflector assembling device according to the relative position relationship between the deflector and the inner layer connecting ring;
secondly, performing point-fixing welding assembly on two side ends of the outer profile of the flow deflector respectively with an upper connecting plate and a lower connecting plate, measuring and polishing the actual length of an integral structure formed by the flow deflector, the upper connecting plate and the lower connecting plate in each group, and ensuring that the actual length of the integral structure formed by the flow deflector, the upper connecting plate and the lower connecting plate in each group is smaller than the theoretical length;
assembling two flow deflectors close to two inner ends of the inner-layer connecting ring, and then gradually assembling the rest flow deflectors towards the center position close to the inner-layer connecting ring; during assembly, each integral structure formed by the guide vanes, the upper connecting plate and the lower connecting plate together is hoisted into the low-temperature wind tunnel solid guide vane assembly device, the elevation of each guide vane is adjusted to meet the installation requirement, then a wedge is inserted between the end of each guide vane which is in a circular arc shape and the second positioning plate to adjust the installation angle of each guide vane to meet the installation requirement, then the upper connecting plate and the lower connecting plate at the two side ends of each guide vane are respectively fixed with the two opposite inner side walls of the inner connecting ring in a spot welding manner, and finally a plurality of guide vane connecting plates which are arranged in parallel at intervals are assembled on the inner molded surface of each guide vane, and the guide vane connecting plates are fixed on the inner molded surface of each guide vane in a spot welding manner; hoisting another adjacent integral structure formed by the guide vanes, the upper connecting plate and the lower connecting plate into the low-temperature wind tunnel solid guide vane assembling device again, adjusting the elevation of another guide vane to meet the installation requirement, inserting a wedge between the end of each guide vane in an arc shape and the second positioning plate to adjust the installation angle of the guide vane to meet the installation requirement, ensuring that the distance between the two adjacent guide vanes meets the installation requirement, performing spot welding on the other upper connecting plate and the other lower connecting plate and two opposite inner side walls of the inner connecting ring respectively, and finally performing spot welding on the outer molded surface of the other guide vane and the guide vane connecting plate on the inner molded surface of the former guide vane; the arrangement direction of the guide vane connecting plates is vertical to the arrangement direction of the guide vanes;
and step four, installing the rest of the flow deflectors in the inner layer connecting ring by the same method as the method in the step three, and then completing the assembly of all the flow deflectors.
The beneficial effect of this application:
according to the low-temperature wind tunnel solid flow deflector assembling device and the flow deflector assembling method, the low-temperature wind tunnel solid flow deflectors are assembled and fixed through the device, the installation angle and the interval of the solid flow deflectors can be effectively guaranteed, turbulence is prevented, and the flow field quality is guaranteed. By adopting the sectional materials to manufacture the assembling device, the molded surface does not need to be cut, the cutting error is avoided, the precision of the assembling device is greatly improved, and the assembling precision of the flow deflector is improved; meanwhile, the flow deflector is limited through the first leaning column and the first positioning plate, so that the installation angle and the installation interval of one end of the flow deflector can be accurately controlled, the installation angle and the installation interval of the other end of the flow deflector can be flexibly adjusted through the wedge and the second positioning plate, the assembly precision of the flow deflector is prevented from being reduced due to the verticality deviation in the flow deflector manufacturing process, and the flow field quality is greatly improved; in addition, through a reasonable assembling process, the assembling efficiency of the guide vane is improved, the subsequent welding deformation is reduced, and the guide vane group does not need to be hoisted after the assembling and welding are finished, so that the problem that the guide vane group is deformed due to hoisting is avoided, and the mounting precision of the guide vane is further improved.
Drawings
In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural view of a low-temperature wind tunnel solid deflector assembly device provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a low-temperature wind tunnel solid deflector assembling device provided in the embodiment of the present application after being assembled with an inner-layer connecting ring;
fig. 3 is a schematic view of a first stage of assembling a flow deflector and an inner-layer connecting ring according to an embodiment of the present disclosure;
fig. 4 is a schematic view of a second stage of assembling the flow deflector and the inner-layer connecting ring provided in the embodiment of the present application;
fig. 5 is a schematic diagram of a third stage of assembling the flow deflector and the inner-layer connecting ring according to the embodiment of the present application;
fig. 6 is a schematic view of the flow deflector and the inner-layer connecting ring provided in the embodiment of the present application after being assembled.
Icon: 1-a first rest post; 2-a first positioning plate; 3-a second backrest column; 4-a second positioning plate; 5-long I-shaped steel; 6-short I-shaped steel; 7-pier stud; 8-flow deflectors; 9-an upper connecting plate; 10-a lower connecting plate; 11-inner layer connecting ring; 12-guide vane connecting plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
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, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
Further, in the present application, unless expressly stated or limited otherwise, the first feature may be directly contacting the second feature or may be directly contacting the second feature, or the first and second features may be contacted with each other through another feature therebetween, not directly contacting the second feature. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example (b):
referring to fig. 1 and fig. 2 to 6, the present application provides a low-temperature wind tunnel solid deflector assembling device, which is used for assembling and fixing low-temperature wind tunnel solid deflectors 8, so that the installation angle and the interval of the solid deflectors 8 can be effectively ensured, turbulence is prevented, and the flow field quality is ensured. The device mainly comprises a base, a plurality of groups of first positioning assemblies and a plurality of groups of second positioning assemblies in one-to-one correspondence with the first positioning assemblies, wherein each group of first positioning assemblies comprises first leaning columns 1 and first positioning plates 2 which are spaced, and each group of second positioning assemblies comprises second leaning columns 3 and second positioning plates 4 which are spaced; the multiple groups of first leaning columns 1 and the first positioning plates 2 are arranged on the upper surface of one side of the base in parallel at intervals along the length direction of the base, and the distances between the adjacent first positioning components are the same; a plurality of groups of second leaning columns 3 and second positioning plates 4 are arranged on the upper surface of the other opposite side of the base in parallel at intervals along the length direction of the base, and the intervals between the adjacent second positioning assemblies are the same; the height of the first positioning plate 2 is smaller than that of the first leaning column 1, the height of the second positioning plate 4 is smaller than that of the second leaning column 3, and the first leaning column 1 corresponds to the second leaning column 3 one by one; the distance between the adjacent first leaning columns 1 is the same, and the distance between the adjacent first leaning columns 1 is the same as the installation distance between the adjacent guide vanes 8; the distance between the adjacent first positioning plates 2 is the same, and the distance between the adjacent first positioning plates 2 is the same as the installation distance between the adjacent guide vanes 8; the distance between the adjacent second leaning columns 3 is the same, and the distance between the adjacent second leaning columns 3 is the same as the installation distance between the adjacent guide vanes 8; the distance between the adjacent second positioning plates 4 is the same, and the distance between the adjacent second positioning plates 4 is the same as the installation distance between the adjacent guide vanes 8.
Further, in the present embodiment, the base includes two long i-shaped steels 5, a plurality of short i-shaped steels 6, and a plurality of piers 7; the multiple pier studs 7 are arranged in two rows at intervals, the heights and the structures of all the pier studs 7 are the same, the distances between the adjacent pier studs 7 in the same row are the same, and the pier studs 7 in different rows are in one-to-one correspondence; meanwhile, the two long I-shaped steels 5 are respectively installed on the tops of the two rows of pier columns 7 in parallel at intervals, the length direction of the long I-shaped steels 5 is perpendicular to the direction of the bus of the flow deflector 8, the long I-shaped steels 5 are arranged along the arrangement direction of the pier columns 7, a plurality of groups of first positioning assemblies are installed on the upper surface of one long I-shaped steel 5 along the length direction, and a plurality of groups of second positioning assemblies are installed on the upper surface of the other long I-shaped steel 5 along the length direction; two ends of the short I-shaped steels 6 are respectively and vertically connected between the two long I-shaped steels 5, and the adjacent short I-shaped steels 6 are arranged in parallel at intervals.
In this embodiment, the pier 7 may be a steel pipe or a lattice column.
Further, in this embodiment, the first leaning column 1 may be made of i-steel, and the length of the first leaning column 1 is greater than the length of the outer surface arc length of the flow deflector 8 of 1/2; the second leaning column 3 can be made of I-shaped steel, and the length of the second leaning column 3 is larger than the length of the outer surface arc length of the 1/2 flow deflector 8.
Therefore, the assembly device is manufactured by adopting the above sectional materials, a cutting molded surface is not needed, cutting errors are avoided, the precision of the assembly device is greatly improved, and the assembly precision of the flow deflector 8 is improved.
Meanwhile, in this embodiment, a connecting line between the first leaning column 1 and the corresponding second leaning column 3 is perpendicular to a straight line where the first positioning assembly is located, and a connecting line between the first positioning plate 2 and the corresponding second positioning plate 4 is oblique to a straight line where the second positioning assembly is located. Namely, the distance between the second leaning column 3 and the second positioning plate 4 which are clamped with the same flow deflector 8 is slightly larger than the distance between the first leaning column 1 and the first positioning plate 2. Therefore, the flow deflector 8 is limited through the first leaning column 1 and the first positioning plate 2, so that the installation angle and the installation distance of one end of the flow deflector 8 are accurately controlled, the installation angle and the installation distance of the other end of the flow deflector 8 can be flexibly adjusted through the wedge and the second positioning plate 4, the situation that the assembling precision of the flow deflector 8 is reduced due to the verticality deviation in the manufacturing process of the flow deflector 8 is avoided, and the flow field quality is greatly improved.
In addition, in this embodiment, the first positioning plate 2 and the second positioning plate 4 are both steel blocks with a thickness greater than or equal to 30mm, and the heights of the first positioning plate 2 and the second positioning plate 4 are greater than the thickness of the flow deflector 8.
Further, in this embodiment, one side of each flow deflector 8 is clamped between the second positioning plate 4 and the second leaning column 3 in the corresponding second positioning assembly of the same group by a wedge, and the other side is clamped between the first positioning plate 2 and the first leaning column 1 in the corresponding first positioning assembly of the same group; the outer profile of the flow deflector 8 is in line contact with the first leaning column 1 and the second leaning column 3 respectively, the end of the flow deflector 8 which is in a circular arc is arranged downwards and is in line contact with the first positioning plate 2, the second positioning plate 4 and the long I-shaped steel 5 respectively, and the end of the flow deflector 8 which is in a sharp corner is arranged upwards. It should be noted that the distance between the first leaning column 1 and the first positioning plate 2, which are in contact with each group of guide vanes 8, is obtained by drawing with drawing software according to the installation angle of the guide vanes 8.
In addition, in the embodiment, a method for assembling the flow deflector 8 is also provided, which mainly adopts the low-temperature wind tunnel solid flow deflector assembling device for assembling; the method mainly comprises the following steps:
step one, after assembling and welding the low-temperature wind tunnel solid deflector assembling device, enclosing and assembling an inner layer connecting ring 11 around the low-temperature wind tunnel solid deflector assembling device; adjusting the relative position of the inner connecting ring 11 and the low-temperature wind tunnel solid deflector assembling device according to the relative position relationship between the deflector 8 and the inner connecting ring 11 so as to meet the assembling requirement; wherein, the lower end surface of the inner layer connecting ring 11 can adopt a section bar to integrally lift the inner layer connecting ring 11;
secondly, the two side ends of the outer profile of the flow deflector 8 are respectively welded and assembled with the upper connecting plate 9 and the lower connecting plate 10 in a point-fixing mode, bolt holes are drilled, and bolts are inserted and fastened; measuring and polishing the actual length of the integral structure formed by the guide vanes 8, the upper connecting plate 9 and the lower connecting plate 10 in each group, and ensuring that the actual length of the integral structure formed by the guide vanes 8, the upper connecting plate 9 and the lower connecting plate 10 in each group is smaller than the theoretical length;
assembling two flow deflectors 8 close to two inner ends of the inner-layer connecting ring 11, and then gradually assembling the rest flow deflectors 8 towards the center position close to the inner-layer connecting ring 11 in sequence; during assembly, each integral structure formed by the guide vanes 8, the upper connecting plates 9 and the lower connecting plates 10 together is hung into a low-temperature wind tunnel solid guide vane assembly device, the elevation of each guide vane 8 is adjusted to meet the installation requirement, then a wedge is inserted between the end of each guide vane 8 in an arc shape and the second positioning plate 4 to adjust the installation angle of each guide vane 8 to meet the installation requirement, the upper connecting plates 9 and the lower connecting plates 10 at the two side ends of each guide vane 8 are respectively fixed with the two opposite inner side walls of the inner-layer connecting ring 11 in a spot welding manner, and finally a plurality of guide vane connecting plates 12 arranged in parallel at intervals are assembled on the inner molded surface of each guide vane 8, and the guide vane connecting plates 12 are fixed on the inner molded surface of each guide vane 8 in a spot welding manner; hoisting another adjacent integral structure formed by the guide vanes 8, the upper connecting plate 9 and the lower connecting plate 10 into the low-temperature wind tunnel solid guide vane assembling device, adjusting the elevation of the guide vanes 8 to meet the installation requirement, inserting wedges between the ends of the guide vanes 8 in the circular arc shape and the second positioning plate 4 to adjust the installation angle of the guide vanes to meet the installation requirement, ensuring that the distance between the two adjacent guide vanes 8 meets the installation requirement, fixing the upper connecting plate 9 and the lower connecting plate 10 with the two opposite inner side walls of the inner layer connecting ring 11 by spot welding respectively, and fixing the outer profile of the other guide vane 8 and the guide vane connecting plate 12 on the inner profile of the previous guide vane 8 by spot welding; wherein, the arrangement direction of the guide vane connecting plates 12 is vertical to the arrangement direction of the guide vanes 8;
and step four, installing the rest of the guide vanes 8 in the inner-layer connecting ring 11 by the same method as the method in the step three, and finishing the accurate assembly of all the guide vanes 8.
In summary, the low-temperature wind tunnel solid deflector assembling device and the deflector 8 assembling method can assemble and fix the low-temperature wind tunnel solid deflector 8 through the device, can effectively ensure the installation angle and the interval of the solid deflector 8, prevent turbulence and ensure the quality of a flow field. By adopting the sectional materials to manufacture the assembling device, the molded surface does not need to be cut, the cutting error is avoided, the precision of the assembling device is greatly improved, and the assembling precision of the flow deflector 8 is improved; meanwhile, the flow deflector 8 is limited through the first leaning column 1 and the first positioning plate 2, so that the installation angle and the installation interval of one end of the flow deflector 8 are accurately controlled, the installation angle and the installation interval of the other end of the flow deflector 8 can be flexibly adjusted through the wedge and the second positioning plate 4, the assembly precision of the flow deflector 8 is prevented from being reduced due to the verticality deviation in the manufacturing process of the flow deflector 8, and the flow field quality is greatly improved; in addition, through reasonable assembling process, the assembling efficiency of the guide vanes 8 is improved, the welding deformation of the subsequent process is reduced, and the guide vane 8 group does not need to be hoisted after the assembling and welding are finished, so that the problem that the guide vane 8 group deforms due to hoisting is avoided, and the mounting precision of the guide vanes 8 is further improved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. The low-temperature wind tunnel solid flow deflector assembling device is characterized by comprising a base, a plurality of groups of first positioning assemblies and a plurality of groups of second positioning assemblies in one-to-one correspondence with the first positioning assemblies, wherein each group of first positioning assemblies comprises first leaning columns and first positioning plates which are spaced from each other, and each group of second positioning assemblies comprises second leaning columns and second positioning plates which are spaced from each other; the first leaning columns and the first positioning plates are parallelly arranged on the upper surface of one side of the base at intervals along the length direction of the base, and the distances between the adjacent first positioning components are the same; the second leaning columns and the second positioning plates are parallelly and alternately arranged on the upper surface of the other opposite side of the base along the length direction of the base, and the intervals between the adjacent second positioning assemblies are the same; the height of the first positioning plate is smaller than that of the first leaning columns, the height of the second positioning plate is smaller than that of the second leaning columns, and the first leaning columns and the second leaning columns are in one-to-one correspondence; the distance between the adjacent first leaning columns is the same, and the distance between the adjacent first leaning columns is the same as the installation distance between the adjacent guide vanes; the distance between the adjacent first positioning plates is the same, and the distance between the adjacent first positioning plates is the same as the installation distance between the adjacent guide vanes; the distance between the adjacent second leaning columns is the same, and the distance between the adjacent second leaning columns is the same as the installation distance between the adjacent flow deflectors; the distance between the adjacent second positioning plates is the same, and the distance between the adjacent second positioning plates is the same as the installation distance between the adjacent guide vanes.
2. The low-temperature wind tunnel solid deflector assembling device according to claim 1, wherein the base comprises two long I-shaped steels, a plurality of short I-shaped steels and a plurality of pier studs; the pier columns are arranged in two rows at intervals in parallel; the two long I-shaped steels are respectively arranged on the tops of the two rows of pier columns in parallel at intervals, a plurality of groups of first positioning assemblies are arranged on the upper surface of one long I-shaped steel along the length direction, and a plurality of groups of second positioning assemblies are arranged on the upper surface of the other long I-shaped steel along the length direction; and two ends of the short I-shaped steels are respectively and vertically connected between the two long I-shaped steels, and the adjacent short I-shaped steels are arranged in parallel at intervals.
3. The assembly device of claim 2, wherein the pier comprises a steel pipe or a lattice column.
4. The low-temperature wind tunnel solid deflector assembly device of claim 1, wherein the first leaning column comprises i-shaped steel, and the length of the first leaning column is greater than 1/2 of the outer surface arc length of the deflector; the second leaning column comprises I-shaped steel, and the length of the second leaning column is larger than 1/2 of the length of the outer surface arc length of the flow deflector.
5. The low-temperature wind tunnel solid deflector assembling device according to claim 1, wherein a connecting line between the first leaning column and the corresponding second leaning column is perpendicular to a straight line where the first positioning assembly is located, and a connecting line between the first positioning plate and the corresponding second positioning plate is oblique to a straight line where the second positioning assembly is located.
6. The low-temperature wind tunnel solid deflector assembling device according to claim 1, wherein the first positioning plate and the second positioning plate are both steel blocks with a thickness of more than or equal to 30mm, and the height of the first positioning plate and the height of the second positioning plate are greater than the thickness of the deflector.
7. The low-temperature wind tunnel solid deflector assembling device according to claim 2, wherein one side of each deflector is clamped between the second leaning column and the second positioning plate in the corresponding same group of the second positioning assemblies through a wedge, and the other side of each deflector is clamped between the first leaning column and the first positioning plate in the corresponding same group of the first positioning assemblies; the outer profile of the flow deflector is in line contact with the first leaning column and the second leaning column respectively, the end of the flow deflector which is in an arc shape is arranged downwards and is in contact with the first positioning plate, the second positioning plate and the long I-shaped steel wire respectively, and the end of the flow deflector which is in a sharp corner is arranged upwards.
8. The low-temperature wind tunnel solid deflector assembling device according to claim 7, wherein a distance between the second leaning column and the second positioning plate which are clamped with the same deflector is larger than a distance between the first leaning column and the first positioning plate.
9. A flow deflector assembling method which adopts the low-temperature wind tunnel solid flow deflector assembling device of any one of claims 1 to 8 for assembling, and is characterized by comprising the following steps:
step one, after the low-temperature wind tunnel solid deflector assembling device is assembled and welded, an inner layer connecting ring is arranged around and assembled on the periphery of the low-temperature wind tunnel solid deflector assembling device in a surrounding mode; adjusting the relative position of the inner layer connecting ring and the low-temperature wind tunnel solid deflector assembling device according to the relative position relationship between the deflector and the inner layer connecting ring;
secondly, performing point-fixing welding assembly on two side ends of the outer profile of the flow deflector respectively with an upper connecting plate and a lower connecting plate, measuring and polishing the actual length of an integral structure formed by the flow deflector, the upper connecting plate and the lower connecting plate in each group, and ensuring that the actual length of the integral structure formed by the flow deflector, the upper connecting plate and the lower connecting plate in each group is smaller than the theoretical length;
assembling two flow deflectors close to two inner ends of the inner-layer connecting ring, and then gradually assembling the rest flow deflectors towards the center position close to the inner-layer connecting ring; during assembly, each integral structure formed by the guide vanes, the upper connecting plate and the lower connecting plate together is hoisted into the low-temperature wind tunnel solid guide vane assembly device, the elevation of each guide vane is adjusted to meet the installation requirement, then a wedge is inserted between the end of each guide vane which is in a circular arc shape and the second positioning plate to adjust the installation angle of each guide vane to meet the installation requirement, then the upper connecting plate and the lower connecting plate at the two side ends of each guide vane are respectively fixed with the two opposite inner side walls of the inner connecting ring in a spot welding manner, and finally a plurality of guide vane connecting plates which are arranged in parallel at intervals are assembled on the inner molded surface of each guide vane, and the guide vane connecting plates are fixed on the inner molded surface of each guide vane in a spot welding manner; hoisting another adjacent integral structure formed by the guide vanes, the upper connecting plate and the lower connecting plate into the low-temperature wind tunnel solid guide vane assembling device again, adjusting the elevation of another guide vane to meet the installation requirement, inserting a wedge between the end of each guide vane in an arc shape and the second positioning plate to adjust the installation angle of the guide vane to meet the installation requirement, ensuring that the distance between the two adjacent guide vanes meets the installation requirement, performing spot welding on the other upper connecting plate and the other lower connecting plate and two opposite inner side walls of the inner connecting ring respectively, and finally performing spot welding on the outer molded surface of the other guide vane and the guide vane connecting plate on the inner molded surface of the former guide vane; the arrangement direction of the guide vane connecting plates is vertical to the arrangement direction of the guide vanes;
and step four, installing the rest of the flow deflectors in the inner layer connecting ring by the same method as the method in the step three, and then completing the assembly of all the flow deflectors.
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