CN112453797A - Positioning device and method for guide vane - Google Patents
Positioning device and method for guide vane Download PDFInfo
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- CN112453797A CN112453797A CN202011095400.7A CN202011095400A CN112453797A CN 112453797 A CN112453797 A CN 112453797A CN 202011095400 A CN202011095400 A CN 202011095400A CN 112453797 A CN112453797 A CN 112453797A
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- guide vane
- positioning
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- bent angle
- wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
Abstract
The invention discloses a positioning device and a positioning method for a guide vane, and mainly aims to accurately position the guide vane through the positioning device of the guide vane placed in a corner cylinder when the guide vane is welded, so that the assembly precision and the welding efficiency of the guide vane are improved. The main technical scheme of the invention is as follows: a positioning device of guide vanes is used for positioning the guide vanes in a compressor bend angle, and comprises: two positioning assemblies; wherein, arbitrary locating component is bar platelike structure, including first border, second border and third border, is provided with a plurality of constant head tanks on the first border, and a plurality of constant head tanks are used for spacing guide vane, and second border and third border are used for with bent angle barrel inner wall fixed. The invention is mainly used for positioning the guide vane.
Description
Technical Field
The invention relates to the technical field of compressor air exhaust, in particular to a positioning device and a positioning method for a guide vane.
Background
The stator part of the wind tunnel compressor comprises a plurality of corner sections, the corner sections adopt a welding form and mainly comprise a 90-degree corner cylinder, an end flange, an internal guide vane, a coupler protective cylinder and a guide device. The guide vane plays a role in preventing air from generating vortex and noise at a sharp turning part and is an important part for forming a turning section. The single guide vane is formed by die forging numerical control processing and is assembled in the corner cylinder body by welding.
In the prior art, the guide vanes are generally assembled by scribing, the guide vanes are firstly scribed on the bent angle cylinder body, and then the guide vanes are welded at the scribed positions after the guide vanes are aligned and scribed. However, in the technical requirements of design drawings, the chord line spacing deviation of each guide vane is definitely required to be less than or equal to 1mm, the mounting angle deviation of each guide vane is less than or equal to 0.5% d, and the verticality deviation of each guide vane is less than or equal to 2 mm. It can be seen that the assembly precision requirement of the guide vane is very strict, the assembly precision of the guide vane cannot be guaranteed by the existing line-drawing assembly mode in the bent angle cylinder, the phenomenon of ultra-poor dimensional precision is easy to occur, and the welding efficiency and the welding quality are seriously affected.
Disclosure of Invention
In view of this, embodiments of the present invention provide a positioning device and a method for a guide vane, and mainly aim to accurately position the guide vane by a positioning device of the guide vane placed in an angled cylinder when the guide vane is welded, so as to improve the assembly precision and welding efficiency of the guide vane.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
on one hand, the embodiment of the invention provides a positioning device for a guide vane, which is used for positioning the guide vane in a compressor bend angle, and comprises the following components:
two positioning assemblies;
wherein, arbitrary locating component is bar platelike structure, including first border, second border and third border, be provided with a plurality of constant head tanks on the first border, a plurality of constant head tanks are used for spacing guide vane, when positioner is in the location state, two locating components are in first relative position with bent angle barrel inner wall, two locating components are on a parallel with bent angle barrel vertical section, and interval first distance, second border and third border are fixed with bent angle barrel inner wall, when positioner is in non-location state, two locating components and bent angle barrel inner wall separation, vertical section is the section that passes bent angle both ends opening diameter simultaneously.
Specifically, the first edge is a straight edge, the positioning grooves are distributed on the first edge at equal intervals, and the inner wall of any positioning groove is matched with the round head part of the guide vane in shape.
Specifically, the distance between the inner side walls of any positioning groove is 1mm larger than that between the outer side walls of the round head parts of the guide vanes.
Specifically, the second edge and the third edge are respectively connected with the first edge in an end-to-end mode, and when the two positioning assemblies and the inner wall of the bent angle cylinder body are located at the first relative position, the second edge and the third edge are respectively attached to the inner wall of the bent angle cylinder body at the corresponding position.
Specifically, the first relative position is as follows: when the guide vane is embedded into the positioning grooves corresponding to the two positioning components, the position of the guide vane is a preset installation position;
the first distance is 400 mm.
On the other hand, an embodiment of the present invention further provides a positioning method for a guide vane, which is implemented by using any one of the positioning devices for a guide vane, including:
providing a corner cylinder and a plurality of guide vanes to be installed matched with the corner cylinder;
providing a positioning device;
placing the flange end face of the first end of the bent angle cylinder body upwards, and adjusting the level;
placing the two positioning assemblies into the bent angle cylinder through the second end flange inlet, wherein the two positioning assemblies and the inner wall of the bent angle cylinder are in a first relative position;
the second edge and the third edge are welded and fixed with the inner wall of the bent angle cylinder body;
putting the guide vane into the first end flange end to enable the guide vane to fall into the plurality of positioning grooves completely;
welding the guide vane;
and taking down the positioning device.
According to the positioning device and method for the guide vane, provided by the embodiment of the invention, when the guide vane is welded, the guide vane is accurately positioned through the positioning device of the guide vane placed in the corner cylinder, so that the assembling precision and the welding efficiency of the guide vane are improved. In the prior art, the guide vane is generally assembled by adopting a marking mode, the assembling precision of the guide vane is very strict, and the assembling precision of the guide vane cannot be ensured by adopting the marking and assembling mode. Compared with the prior art, the positioning device is firstly placed into the bent angle cylinder, the guide vane falls into the positioning groove of the positioning device, the position of the guide vane is accurate, the positioning device comprises two positioning assemblies, and the guide vane is simultaneously supported on two sides below the guide vane, so that the position of the guide vane is stable in the welding process, and the assembling precision and the welding efficiency of the guide vane are improved.
Drawings
FIG. 1 is a schematic view of the position of a guide vane within a corner cylinder according to the prior art of the present invention;
fig. 2 is a schematic structural diagram of a positioning device of a guide vane according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a dimensional relationship between a positioning groove and a guide vane in the positioning device for a guide vane according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an installation position of a positioning device of a guide vane provided in an embodiment of the present invention at a first viewing angle;
fig. 5 is a structural schematic diagram of an installation position of a positioning device of a guide vane provided in an embodiment of the present invention at a second viewing angle;
fig. 6 is a flowchart of a positioning method of a guide vane according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the positioning device and method of guide vanes and the embodiments, structures, features and effects thereof according to the present invention with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1 to 5, in one aspect, an embodiment of the present invention provides a positioning device for a guide vane, which is used for positioning a guide vane 2 in a compressor corner 1, and includes:
two positioning assemblies 3;
wherein, arbitrary locating component 3 is bar platelike structure, including first border 31, second border 32 and third border 33, be provided with a plurality of constant head tanks 311 on the first border 31, a plurality of constant head tanks 311 are used for spacing guide vane 2, when positioner is in the location state, two locating component 3 and 1 barrel inner wall of bent angle are in first relative position, two locating component 3 are on a parallel with 1 barrel of bent angle and cut the profile longitudinally, and interval first distance, second border 32 and third border 33 are fixed with 1 barrel inner wall of bent angle, when positioner is in the non-location state, two locating component 3 and 1 barrel inner wall of bent angle separate, the profile that cuts the profile for passing 1 both ends opening diameter of bent angle simultaneously.
In the prior art, as shown in fig. 1, a cylinder body with a bend angle 1 is a 90-degree right angle, flanges are assembled at round openings at two ends, such as a first end flange 41 and a second end flange 42 in fig. 1, a plurality of guide vanes 2 are assembled at a right-angle turning position inside the cylinder body with the bend angle 1, the guide vanes 2 are uniformly arranged side by side along the thickness direction, and a conventional coupler protective cylinder 5 and a conventional flow guide device 6 are further arranged inside the cylinder body with the bend angle 1. Guide vane 2 is tile slice structure, and both ends are used for with 1 barrel inner wall welding of bent angle on the length direction, and each guide vane 2 length is radial distance looks adaptation in with bent angle 1 welding position, and one end is circular-arc thick on the width direction, thins gradually to the other end. During the assembly of the guide vane 2, the positioning device according to the invention is used. As shown in fig. 2-3, the positioning device includes two positioning assemblies 3 with the same structure, each positioning assembly 3 is a long metal plate with a certain thickness, and is approximately rectangular as a whole and includes two opposite long edges, and a plurality of positioning slots 311 are formed on one long edge, and the long edge serves as a first edge 31. During the use, two locating component 3 extend 1 barrel right angle turn department radial direction setting of angle, and all are on a parallel with the longitudinal section, and wherein, the longitudinal section is through first end flange 41 opening and second end flange 42 opening diameter simultaneously, the certain distance of interval between two locating component 3. When guide vane 2 assembles, the circular-arc thick end of guide vane 2 is embedded into the positioning grooves 311 corresponding to the two positioning components 3, and the guide vane 2 is limited by different positions, so that the purpose of accurate limitation is achieved. The positioning component 3 is installed by placing the opening of the second end flange 42 into the cylinder of the bend 1, after the first relative position is reached, the second edge 32 and the third edge 33 of the positioning component are matched with the shape of the inner wall of the cylinder of the bend 1, the second edge 32 and the third edge 33 are welded on the cylinder of the bend 1, and after the guide vane 2 is welded, the positioning component 3 is taken down. The first relative position is a correct welding position when the positioning assembly 3 makes the circular arc-shaped thicker end of the guide vane 2 embedded into the positioning slot 311, as will be further described later.
According to the positioning device and method for the guide vane, provided by the embodiment of the invention, when the guide vane is welded, the guide vane is accurately positioned through the positioning device of the guide vane placed in the corner cylinder, so that the assembling precision and the welding efficiency of the guide vane are improved. In the prior art, the guide vane is generally assembled by adopting a marking mode, the assembling precision of the guide vane is very strict, and the assembling precision of the guide vane cannot be ensured by adopting the marking and assembling mode. Compared with the prior art, the positioning device is firstly placed into the bent angle cylinder, the guide vane falls into the positioning groove of the positioning device, the position of the guide vane is accurate, the positioning device comprises two positioning assemblies, and the guide vane is simultaneously supported on two sides below the guide vane, so that the position of the guide vane is stable in the welding process, and the assembling precision and the welding efficiency of the guide vane are improved.
The first edge 31 is a straight edge, the plurality of positioning grooves 311 are distributed at equal intervals on the first edge 31, and the inner wall of any positioning groove 311 is matched with the round head part of the guide vane 2. The positioning slots 311 distributed at equal intervals meet the requirement that the guide vanes 2 are uniformly arranged side by side. The guide vane 2 is of a tile-shaped structure with a certain radian, the bottom surface of the positioning groove 311 is in a semicircular shape matched with the bottom surface, the side wall of the positioning groove 311 is in an arc shape similar to the bottom surface, the shape of the circular head part of the positioning groove 311 and the guide vane 2 is matched, the contact area between the guide vane 2 and the positioning groove 311 is increased, and the positioning stability of the guide vane 2 is increased to the maximum extent. Specifically, the depth of the positioning groove 311 may be half of the width of the guide vane 2, so that the insertion and separation processes of the guide vane 2 are smoothly performed, and the stability of the limiting process of the guide vane 2 is improved. The first edge 31 is a straight edge, so that the stress direction of each guide vane 2 is uniform.
Further, as shown in fig. 3, considering assembling clearance requirement and positioning accuracy requirement, the inner contour of the positioning groove 311 has a single-side 0.5mm clearance with the guide vane 2, i.e. a is 0.5 in the drawing, which can ensure the positioning accuracy of the guide vane 2 and ensure the smooth assembling and assembling of the guide vane 2, i.e. the distance between the inner side wall of the positioning groove 311 is 1mm larger than that between the outer side walls of the round head parts of the guide vane 2. In the positioning and assembling process, the top of the round head part of the guide vane 2 falls into the bottom surface of the positioning groove 311, and 0.5mm clearance gauges are respectively used between the side walls of the guide vane 2 and the side walls of the positioning groove 311, so that the clearance between the arc-shaped side walls at the two sides of the guide vane 2 and the arc-shaped side walls of the positioning groove 311 is ensured to be 0.5mm, and the accurate positioning and assembling of the guide vane 2 are further completed.
The shapes of the second edge 32 and the third edge 33 of the positioning component 3 connected with the two ends of the first edge 31 are the shapes of the inner walls of the cylinder of the bend 1 corresponding to the shapes of the two positioning components 3 and the inner walls of the cylinder of the bend 1 at the first relative position. In a first relative position, as shown in fig. 4 and 5, the two positioning elements 3 are parallel to the longitudinal section of the tube of the corner 1, either positioning element 3 is at a vertical distance of 200mm from the longitudinal section, and the second edge 32 and the third edge 33 are engaged with the edge line of the inner wall of the tube of the corner 1. Wherein the longitudinal section is a section through the diameter of both the inlet of the first end flange 41 and the inlet of the second end flange 42. Fig. 4 is a radial sectional view of the corner 1 at a right angle, i.e., a sectional view taken along line a-a 'in fig. 5, and fig. 5 is a longitudinal sectional view of the corner 1, i.e., a sectional view taken along line B-B' in fig. 4.
In the production of the positioning component 3, first the positioning reference of the positioning component 3 is determined. When the relative position between the round head part of the guide vane 2 and the inside of the cylinder body of the corner 1 is accurate, the positioning component 3 is clamped into the guide vane 2, the round head part of the guide vane 2 falls into the positioning groove 311, the vertical distance between the positioning component 3 and the longitudinal section is adjusted to be 200mm, the plug ruler is used for positioning, the internal contour of the cylinder body of the corner 1 can be known, the internal shape of the cylinder body of the corner 1 corresponding to the positioning component 3 is processed according to the internal shape of the cylinder body of the corner 1, the vertex of the third edge 33 is matched with the side line of the inner wall of the cylinder body of the corner 1, and namely the third edge 33 is an obtuse angle which is shown in figure. In the following use, the vertex position of the obtuse angle serves as the positioning point of the positioning element 3 inside the corner 1. The distance between the positioning component 3 and the longitudinal section can be determined according to the number and the thickness of the guide vanes 2 and the thickness of the positioning component 3, and the stability of the positioning process of the guide vanes 2 is ensured. In the present embodiment, as shown in fig. 4, when the vertical distance is 200mm, the long axis of the radial cross section of the positioning unit 3 at the right angle position with respect to the corner 1 is shortened to 37mm on one side.
On the other hand, as shown in fig. 6, an embodiment of the present invention further provides a positioning method for a guide vane, which is implemented by using any one of the positioning devices for a guide vane 2 described above, and includes:
s1: providing a cylinder body with a bend angle 1 and a plurality of guide vanes 2 to be installed matched with the cylinder body;
s2: providing a positioning device;
s3: placing the end face of a flange 41 at the first end of the cylinder body of the bend angle 1 upwards, and adjusting the level;
s4: placing the two positioning assemblies 3 into the cylinder body of the bend angle 1 through the inlets of the second end flanges 42, wherein the two positioning assemblies 3 and the inner wall of the cylinder body of the bend angle 1 are in a first relative position;
s5: the second edge 32 and the third edge 33 are welded and fixed with the inner wall of the cylinder body of the bend angle 1;
s6: putting the guide vane 2 into the first end flange 41 to make the guide vane 2 fall into the plurality of positioning slots 311 completely;
s7: welding the guide vane 2;
s8: and cutting and taking down the positioning device.
Specifically, the end face of a first end flange 41 of the barrel body at the corner 1 is placed upwards, the approximate level is adjusted, so that the guide vanes 2 inside the barrel body are assembled conveniently, the positioning assembly 3 is symmetrically assembled by referring to the longitudinal section of the barrel body at the corner 1 through the inlet of a second end flange 42, the distance between the positioning assembly 3 and the longitudinal section is 200mm, a plumb line is adopted for checking to ensure that the positioning assemblies 3 at two sides are completely vertical and parallel to each other, and simultaneously, the obtuse vertex of a third edge 33 of the positioning assembly 3 is ensured to be matched with the elliptical side line of the barrel body at the corner 1, so that the relative positioning and installation of the positioning assembly 3 and the barrel body at the corner 1 are completed, and.
Each guide vane 2 is lifted by a lifting appliance through a process lifting ring, the guide vanes 2 are assembled and assembled through a first end flange 41 from top to bottom, so that the guide vanes 2 completely fall into the positioning grooves 311 of the positioning assembly 3, a clearance between the side walls of the guide vanes 2 and the side walls of the positioning grooves 311 is confirmed to be 0.5mm by adopting a 0.5mm clearance gauge, and the positioning and assembling of the guide vanes 2 are further completed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. The utility model provides a positioner of guide vane for compressor bent angle interior guide vane's location, its characterized in that includes:
two positioning assemblies;
wherein, it is arbitrary locating component is bar platelike structure, including first border, second border and third border, be provided with a plurality of constant head tanks on the first border, it is a plurality of the constant head tank is used for right guide vane carries on spacingly, works as positioner is in when the position fixing state, two locating component with bent angle barrel inner wall is in first relative position, two locating component is on a parallel with bent angle barrel longitudinal section, and the first distance in interval, the second border with the third border with bent angle barrel inner wall is fixed, works as positioner is in when the non-position fixing state, two locating component with bent angle barrel inner wall separation, the longitudinal section is for passing simultaneously bent angle both ends opening diameter's section.
2. Positioning device for guide vanes according to claim 1,
the first edge is a straight edge, the positioning grooves are distributed on the first edge at equal intervals, and the inner wall of any one positioning groove is matched with the round head part of the guide vane in shape.
3. Positioning device for guide vanes according to claim 2,
the distance between the inner side walls of any positioning groove is 1mm larger than that between the outer side walls of the round head parts of the guide vanes.
4. Positioning device for guide vanes according to claim 1,
the second border with the third border respectively with first border end to end, work as two locating component with bent angle barrel inner wall is in when first relative position, the second border with the third border is rather than corresponding the position bent angle barrel inner wall laminating.
5. Positioning device for guide vanes according to claim 1,
the first relative position is as follows: when the guide vane is embedded into the positioning grooves corresponding to the two positioning assemblies, the position of the guide vane is a preset installation position;
the first distance is 400 mm.
6. A positioning method of a guide vane, which is implemented by the positioning device of a guide vane according to any one of claims 1 to 5, comprising:
providing a corner cylinder and a plurality of guide vanes to be installed matched with the corner cylinder;
providing one of said positioning devices;
placing the end face of the flange at the first end of the bent angle cylinder body upwards, and adjusting the level;
placing the two positioning assemblies into the bent angle cylinder through a second end flange inlet, wherein the two positioning assemblies and the inner wall of the bent angle cylinder are located at the first relative position;
the second edge and the third edge are welded and fixed with the inner wall of the bent angle cylinder body;
putting the guide vane into the first end flange end, so that the guide vane completely falls into the positioning grooves;
welding the guide vane;
and taking down the positioning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011095400.7A CN112453797B (en) | 2020-10-14 | 2020-10-14 | Positioning method of guide vane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011095400.7A CN112453797B (en) | 2020-10-14 | 2020-10-14 | Positioning method of guide vane |
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| CN112453797A true CN112453797A (en) | 2021-03-09 |
| CN112453797B CN112453797B (en) | 2023-01-06 |
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| CN108443081A (en) * | 2018-06-14 | 2018-08-24 | 彭美江 | A kind of wind electricity blade mounting device quickly positioned |
| CN208147710U (en) * | 2018-05-04 | 2018-11-27 | 重庆水轮机厂有限责任公司 | Turbine stay ring guide vane assembles positioning device |
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| GB565366A (en) * | 1942-04-30 | 1944-11-08 | Thomas Chester | Improvements in or relating to centrifugal fans and the like |
| EP0513669A2 (en) * | 1991-05-17 | 1992-11-19 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Friction welding method for fixing blades on a turbine wheel of a fluid machine |
| CN202527881U (en) * | 2012-03-21 | 2012-11-14 | 上虞市鹏翔暖通设备有限公司 | Assembly welding clamp for flow-guiding cylinder of fan |
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| CN112453797B (en) | 2023-01-06 |
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