Assembly type static blade brushing tool
By designing prefabricated static blade whisk tooling, using sliding fitting and reference surface detection, the problems of low relative position accuracy and detection efficiency of the inner and outer crown assembly grooves of the prefabricated static blades are solved, and efficient and low-cost measurement is achieved.
Patent Information
- Application Number
- CN202421699587.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-07-18
AI Technical Summary
In the prior art, the relative position dimensional machining accuracy of the inner and outer crown assembly grooves of the prefabricated static blades is required, but the traditional detection method is inefficient and costly.
A prefabricated static blade whisk tooling is designed, including a tool base and a boss structure that cooperates with the inner and outer crown assembly grooves. Through sliding fit and reference surface detection, rapid and accurate measurement of the relative position of the assembly groove is achieved.
The measurement accuracy and efficiency of the relative position of the inner and outer crown assembly grooves of the prefabricated static blades is improved, and the detection cost is reduced.
Smart Images
Figure CN223251499U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of steam turbine blade processing, and in particular relates to an assembled stationary blade whisking tool. Background Art
[0002] like Figure 1 、 Figure 2 As shown, the gas turbine compressor stator blades usually adopt an assembled slot design structure. There are many structures of existing assembled stator blades. For example, Figure 1 This is a structural diagram of an existing assembled stationary blade; Figure 2 This is a structural diagram of another existing assembled stationary blade. The inner and outer crown assembly grooves of the assembled stationary blade are arc surfaces, and the relative position and dimension processing accuracy between the arc working surfaces of the inner and outer crown assembly grooves is very high.
[0003] like Figure 1 、 Figure 2 As shown, the assembled stationary blade includes an outer crown 1 and an inner crown 2 provided at both ends. The outer crown 1 includes an outer crown outlet side assembly platform 11 having an outer crown outlet side assembly groove 111 and an outer crown inlet side assembly platform 12 having an outer crown inlet side assembly groove 121. The inner crown 2 includes an inner crown outlet side assembly platform 21 having an inner crown outlet side assembly groove 211 and an inner crown inlet side assembly platform 22 having an inner crown inlet side assembly groove 221.
[0004] The left side of the outer crown air inlet side assembly groove 111 and the right side of the inner crown air inlet side assembly groove 221 are respectively the left assembly groove positioning surface 122 and the right assembly groove positioning surface 222. In actual use, the left assembly groove positioning surface 122 and the right assembly groove positioning surface 222 can also be the left side of the outer crown air outlet side assembly groove 111 and the right side of the inner crown air outlet side assembly groove 211.
[0005] The linear distance between the left assembly groove positioning surface 122 and the right assembly groove positioning surface 222 is A ± 0.05. The machining accuracy of this dimension directly affects the assembly quality of the blade and is a key control indicator during blade processing, requiring precise control. The relative position dimensions of the arc working surface of the outer crown assembly groove are traditionally measured using a three-dimensional coordinate measuring machine (CMM), but CMM measurement is inefficient and costly. Summary of the Invention
[0006] The purpose of the utility model is to provide an assembled stationary blade fitting tool with a simple structure, simple operation, high measurement accuracy and high efficiency for measuring the relative positions of the inner and outer crown assembly grooves of assembled stationary blades, in response to the deficiencies of the existing technology.
[0007] The technical purpose of this utility model is achieved through the following technical solutions:
[0008] An assembled stationary blade fitting tool comprises a tool base; the tool base is provided with a boss structure for matching with the inner crown fitting groove and the outer crown fitting groove of the assembled stationary blade; the boss structure comprises a left vertical protrusion and a right vertical protrusion with the same shape as the outer crown fitting groove and the inner crown fitting groove respectively; the width of the tool base is greater than the length of the outer crown fitting groove and the inner crown fitting groove, and the length of the boss structure arranged along the width direction of the tool base is greater than the length of the outer crown fitting groove and the inner crown fitting groove; the outer crown fitting groove and the inner crown fitting groove are slidably matched with the left vertical protrusion and the right vertical protrusion respectively,
[0009] The left side of the outer crown assembly groove and the right side of the inner crown assembly groove are the left assembly groove positioning surface and the right assembly groove positioning surface respectively;
[0010] The left side surface of the left vertical protrusion and the right side surface of the right vertical protrusion are respectively the first reference plane and the second reference plane;
[0011] The straight-line distance between the left assembly groove positioning surface and the right assembly groove positioning surface is A;
[0012] The straight-line distance between the first reference plane and the second reference plane is A+0.05 mm.
[0013] The boss structure is L-shaped; the heights of the left vertical protrusion and the right vertical protrusion are respectively less than or equal to the depths of the outer crown assembly groove and the inner crown assembly groove; the left vertical protrusion is arranged at the right upper end of the left horizontal protrusion, and the right vertical protrusion is arranged at the left upper end of the right horizontal protrusion; the upper end surfaces of the left horizontal protrusion and the right horizontal protrusion are respectively the third datum plane and the fourth datum plane; when the assembled static blade is placed on the tooling base, the lower left end surface of the outer crown assembly platform of the assembled static blade abuts the third datum plane, and the lower right end surface of the inner crown assembly platform of the assembled static blade abuts the fourth datum plane; the lower right end surface of the outer crown assembly platform and the lower left end surface of the inner crown assembly platform are respectively clearance-matched with the top end surface of the tooling base.
[0014] The outer crown assembly groove and the inner crown assembly groove are arc-shaped, and correspondingly, the left side transverse protrusion and the right side transverse protrusion are arc-shaped.
[0015] The left side surface of the tooling base is a fifth reference plane having the same shape as the left side surface of the outer crown, and the right side surface of the tooling base is a sixth reference plane having the same shape as the right side surface of the inner crown.
[0016] The protrusion structure is a slider protrusion, and the assembled stationary blade is slidably fitted with the protrusion structure.
[0017] Compared with the prior art, the beneficial effects of the present invention are:
[0018] 1. This utility model combines the structure and processing and assembly requirements of assembled stationary blades to measure the relative position dimensions of the arc-shaped working surface of the inner ring crown assembly groove of assembled stationary blades. This utility model has the advantages of simple structure, simple operation, high measurement accuracy and high efficiency.
[0019] 2. The utility model sets a left lateral protrusion and a right lateral protrusion with a third reference plane and a fourth reference plane; during detection, it can quickly locate the lower left part of the outer crown air inlet side assembly platform and the lower right part of the inner crown air inlet side assembly platform, and detect the lower left end face of the outer crown air inlet side assembly platform and the lower right end face of the inner crown air inlet side assembly platform, while improving the detection accuracy of the first reference plane and the second reference plane. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a structural diagram of an existing assembled stationary blade;
[0021] Figure 2 This is a structural diagram of another existing assembled stationary blade;
[0022] Figure 3 It is a structural diagram of the utility model;
[0023] Figure 4 This is a schematic diagram of the utility model when used in conjunction with assembled stationary blades;
[0024] Reference numerals: 1—external crown; 11—external crown air outlet side assembly platform; 111—external crown air outlet side assembly groove; 12—external crown air inlet side assembly platform; 121—external crown air inlet side assembly groove; 122—left side assembly groove positioning surface;
[0025] 2—Inner crown; 21—Inner crown outlet side assembly platform; 211—Inner crown outlet side assembly slot; 22—Inner crown inlet side assembly platform; 221—Inner crown inlet side assembly slot; 222—Right side assembly slot positioning surface;
[0026] 3—Tooling base; 31—Fifth reference plane; 32—Sixth reference plane; 33—Weight reduction hole;
[0027] 41—left vertical protrusion; 411—first reference plane; 42—left horizontal protrusion; 421—third reference plane;
[0028] 51—right vertical protrusion; 511—second reference plane; 52—right horizontal protrusion; 521—fourth reference plane. DETAILED DESCRIPTION
[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.
[0032] like Figure 1 — Figure 4 As shown, an assembled static blade fitting tool comprises a tool base 3; a boss structure is provided on the tool base 3 for matching with the inner crown fitting groove and the outer crown fitting groove of the assembled static blade; the boss structure comprises a left vertical protrusion 41 and a right vertical protrusion 51 which are respectively the same in shape as the outer crown fitting groove and the inner crown fitting groove; the width of the tool base 3 is greater than the length of the outer crown fitting groove and the inner crown fitting groove, and the length of the boss structure arranged along the width direction of the tool base 3 is greater than the length of the outer crown fitting groove and the inner crown fitting groove; the outer crown fitting groove and the inner crown fitting groove are respectively aligned with the left vertical protrusion 41 and the right vertical protrusion 51 which are respectively aligned with the left vertical protrusion 41 and the inner crown fitting groove The side vertical protrusion 41 and the right vertical protrusion 51 are slidingly fitted together, and the left side of the outer crown assembly groove and the right side of the inner crown assembly groove are the left assembly groove positioning surface 122 and the right assembly groove positioning surface 222 respectively; the left side of the left vertical protrusion 41 and the right side of the right vertical protrusion 51 are the first reference surface 411 and the second reference surface 511 respectively; the straight-line distance between the left assembly groove positioning surface 122 and the right assembly groove positioning surface 222 is A; the straight-line distance between the first reference surface 411 and the second reference surface 511 is A+0.05mm.
[0033] like Figure 3 、 Figure 4As shown, the tooling base 3 is provided with a left vertical protrusion 41 and a right vertical protrusion 51 that match the shape of the outer crown assembly groove and the inner crown assembly groove respectively. Specifically, the left vertical protrusion 41 and the right vertical protrusion 51 are arranged along the width direction of the tooling base 3. A weight reduction hole 33 is provided in the middle of the tooling base 3, which runs through the upper and lower ends thereof. In actual use, the fitting tool in the present utility model is suitable for measuring the relative position of the assembly grooves on the inlet or outlet sides of the inner and outer crowns of assembled static blades. In this embodiment, the assembly grooves on the inlet side of the inner and outer crowns are taken as an example.
[0034] like Figure 4 As shown, the outer crown air inlet side assembly groove 121 and the inner crown air inlet side assembly groove 221 slide together with the left vertical protrusion 41 and the right vertical protrusion 51, respectively. The left side of the outer crown air inlet side assembly groove 121 and the right side of the inner crown air inlet side assembly groove 221 are the left assembly groove positioning surface 122 and the right assembly groove positioning surface 222, respectively. The left side of the left vertical protrusion 41 and the right side of the right vertical protrusion 51 are the first reference surface 411 and the second reference surface 511, respectively. The straight-line distance between the left assembly groove positioning surface 122 and the right assembly groove positioning surface 222 is A; and the straight-line distance between the first reference surface 411 and the second reference surface 511 is A+0.05mm. When the outer crown air intake side assembly groove 121 and the inner crown air intake side assembly groove 221 of the assembled stator blade respectively mate with the left vertical protrusion 41 and the right vertical protrusion 51, the relative positions of the inner and outer crown assembly grooves of the assembled stator blade can be quickly confirmed by setting the first reference surface 411 and the second reference surface 511. This technical solution has the advantages of simple structure, easy operation, high measurement accuracy, and high efficiency.
[0035] like Figure 1 、 Figure 2 、 Figure 4As shown, the cross-sections of the outer crown air inlet assembly groove 121 and the inner crown air inlet assembly groove 221 are U-shaped grooves. The outer crown air inlet assembly groove 121 and the inner crown air inlet assembly groove 221 are arc-shaped. Correspondingly, the left side transverse protrusion 42 and the right side transverse protrusion 52 are also arc-shaped. The outer crown air inlet assembly groove 121 and the inner crown air inlet assembly groove 221 are arc-shaped grooves with the same center but different diameters. Correspondingly, the left side vertical protrusion 41 and the right side vertical protrusion 51 are arc-shaped protrusions with the same center but different diameters that mate with the outer crown air inlet assembly groove 121 and the inner crown air inlet assembly groove 221. The width of the tooling base 3 is greater than the length of the outer crown air inlet side assembly groove 121 and the inner crown air inlet side assembly groove 221, and the length of the boss structure arranged along the width direction of the tooling base 3 is greater than the length of the outer crown air inlet side assembly groove 121 and the inner crown 2 air inlet side assembly groove; the assembled static blades are pushed to slide along the width direction of the tooling base 3; if the assembled static blades can slide smoothly, it is determined that the relative position dimensions of the arc surfaces of the inner and outer crown 1 air inlet side assembly grooves are qualified; otherwise, it is determined that the relative position dimensions of the arc surfaces of the inner and outer crown 1 assembly grooves are unqualified, and the processing program needs to be adjusted.
[0036] like Figure 3 、 Figure 4 As shown, the boss structure is L-shaped; the heights of the left vertical protrusion 41 and the right vertical protrusion 51 are respectively less than or equal to the depths of the outer crown air inlet side assembly groove 121 and the inner crown air inlet side assembly groove; the left vertical protrusion 41 is arranged at the right upper end of the left horizontal protrusion 42, and the right vertical protrusion 51 is arranged at the left upper end of the right horizontal protrusion 52; the upper end surfaces of the left horizontal protrusion 42 and the right horizontal protrusion 52 are respectively the third reference surface 421 and the fourth reference surface 521; when the assembled static blade is placed on the tooling base 3, the lower end left end surface of the outer crown air inlet side assembly platform 12 of the assembled static blade abuts the third reference surface 421, and the lower end right end surface of the inner crown air inlet side assembly platform 22 of the assembled static blade abuts the fourth reference surface 521; the lower end right end surface of the outer crown air inlet side assembly platform 12 and the lower end left end surface of the inner crown air inlet side assembly platform 22 are respectively clearance-matched with the top end surface of the tooling base 3.
[0037] In actual use, when the height of the left vertical protrusion 41 and the right vertical protrusion 51 is greater than the depth of the outer crown air inlet side assembly groove 121 and the inner crown air inlet side assembly groove 221, the lower left and lower right parts of the outer crown air inlet side assembly platform 12 on both sides of the outer crown air inlet side assembly groove 121 and the lower right and lower left parts of the inner crown air inlet side assembly platform 22 on both sides of the inner crown air inlet side assembly groove 221 will be suspended in the air, so that the lower left end face and the lower right end face of the outer crown air inlet side assembly platform 12 on both sides of the outer crown air inlet side assembly groove 121 and the lower right end face and the lower left end face of the inner crown air inlet side assembly platform 22 on both sides of the inner crown air inlet side assembly groove 221 are spaced apart and matched with the top end face of the tooling base 3.
[0038] When the height of the left vertical protrusion 41 and the right vertical protrusion 51 are respectively less than or equal to the depth of the outer crown air inlet side assembly groove 121 and the inner crown air inlet side assembly groove 221, the lower ends of the outer crown air inlet side assembly platform 12 and the inner crown air inlet side assembly platform 22 will be in surface contact with the top end surface of the tooling base 3, that is, the lower left end surface and the lower right end surface of the outer crown air inlet side assembly platform 12 on both sides of the outer crown air inlet side assembly groove 121 and the lower right end surface and the lower left end surface of the inner crown air inlet side assembly platform 22 on both sides of the inner crown air inlet side assembly groove 221 will be in surface contact with the top end surface of the tooling base 3.
[0039] like Figure 2 、 Figure 4 As shown, there is a height difference X between the lower left end face and the lower right end face of the outer crown air intake side assembly platform 12, and the position height of the lower left end face is greater than the height of the lower right end face. There is a height difference Y between the lower left end face and the lower right end face of the inner crown air intake side assembly platform 22, and the position height of the lower right end face is greater than the height of the lower left end face. The height of the left side transverse protrusion 42 is greater than X, and the height of the right side transverse protrusion 52 is greater than Y. When the lower left end face of the outer crown air intake side assembly platform 12 abuts the upper end face of the left side transverse protrusion 42, there is a clearance fit between the lower right end face and the top end face of the tooling base 3. When the lower right end face of the inner crown air intake side assembly platform 22 abuts the upper end face of the right side transverse protrusion 52, there is a clearance fit between the lower left end face and the top end face of the tooling base 3.
[0040] By providing an L-shaped boss structure, the lower left end surface of the outer crown air inlet side assembly platform 12 abuts the third reference surface 421, and the lower right end surface of the inner crown air inlet side assembly platform 22 abuts the fourth reference surface 521; the lower right end surface of the outer crown air inlet side assembly platform 12 and the lower left end surface of the inner crown 2 assembly platform are respectively clearance-matched with the top end surface of the tooling base 3. By adopting this technical measure, during inspection, the lower left end surface of the outer crown air inlet side assembly platform 12 and the lower right end surface of the inner crown air inlet side assembly platform 22 can be quickly positioned, and the lower left end surface of the outer crown air inlet side assembly platform 12 and the lower right end surface of the inner crown air inlet side assembly platform 22 can be inspected, while improving the inspection accuracy of the first reference surface 411 and the second reference surface 511.
[0041] like Figure 3 、 Figure 4As shown, the raised structure is a slider raised structure, and the assembled stationary blade slides with the raised structure. In actual use, after the assembled stationary blade is placed on the fitting with the air inlet or outlet side facing downward, the inner crown assembly groove and the outer crown assembly groove on the air inlet or outlet side of the inner crown 2 and the outer crown 1 of the assembled stationary blade are matched with the right side transverse protrusion 52 and the left side transverse protrusion 42 respectively, so that the left side assembly groove positioning surface 122 and the right side assembly groove positioning surface 222 contact the first reference surface 411 and the second reference surface 511; the lower left end surface of the outer crown assembly platform of the assembled stationary blade abuts the third reference surface 421, and the lower right end surface of the inner crown assembly platform of the assembled stationary blade abuts the fourth reference surface 521; and the assembled stationary blade is pushed to slide along the width direction of the tooling base 3.
[0042] like Figure 3 、 Figure 4 As shown, the left side of the tool base 3 is a fifth reference surface 31 having the same shape as the left side of the outer crown 1, and the right side of the tool base 3 is a sixth reference surface 32 having the same shape as the right side of the inner crown 2. In actual use, the tool base 3 can be square in shape. The fifth and sixth reference surfaces 31 and 32 can be provided to facilitate positioning and assist in detection.
[0043] Working principle:
[0044] Step 1: Deburring the outer surface of the assembled stationary blade;
[0045] Step 2: Place the assembled stationary blade with the air inlet or outlet side facing downward on the fitting tool;
[0046] Match the inner crown assembly groove and the outer crown assembly groove on the air inlet or outlet side of the inner crown 2 and the outer crown 1 of the assembled stationary blade with the right lateral protrusion 52 and the left lateral protrusion 42 respectively, so that the left assembly groove positioning surface 122 and the right assembly groove positioning surface 222 are in contact with the first reference surface 411 and the second reference surface 511;
[0047] Step 3: Make the lower left end surface of the outer crown assembly platform of the assembled stationary blade abut against the third reference surface 421, and the lower right end surface of the inner crown assembly platform of the assembled stationary blade abut against the fourth reference surface 521;
[0048] Step 4: Push the assembled stationary blade to slide along the width direction of the tooling base 3;
[0049] If the assembled stationary blades can slide smoothly, it is determined that the relative position dimensions of the arc surfaces of the inner and outer crown 1 assembly grooves are qualified;
[0050] Otherwise, it is determined that the relative position dimensions of the arc surfaces of the inner and outer crown 1 assembly grooves are unqualified and the processing program needs to be adjusted.
[0051] When the utility model is used for measurement, it has the advantages of simple operation, high detection efficiency and low detection cost.
[0052] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.
Claims
1. An assembled stationary blade brushing tool, characterized in that: It includes a tooling base; the tooling base is provided with a boss structure for matching with the inner crown assembly groove and the outer crown assembly groove of the assembled stationary blade; The boss structure includes a left vertical protrusion and a right vertical protrusion having the same shape as the outer crown assembly groove and the inner crown assembly groove respectively; The width of the tooling base is greater than the length of the outer crown assembly groove and the inner crown assembly groove, and the length of the boss structure arranged along the width direction of the tooling base is greater than the length of the outer crown assembly groove and the inner crown assembly groove; The outer crown assembly groove and the inner crown assembly groove are respectively slidably matched with the left vertical protrusion and the right vertical protrusion. The left side of the outer crown assembly groove and the right side of the inner crown assembly groove are the left assembly groove positioning surface and the right assembly groove positioning surface respectively; The left side surface of the left vertical protrusion and the right side surface of the right vertical protrusion are respectively the first reference plane and the second reference plane; The straight-line distance between the left assembly groove positioning surface and the right assembly groove positioning surface is A; The straight-line distance between the first reference plane and the second reference plane is A+0.05 mm.
2. The assembled stationary blade brushing tool according to claim 1 is characterized in that: The boss structure is L-shaped; The heights of the left vertical protrusion and the right vertical protrusion are respectively less than or equal to the depths of the outer crown assembly groove and the inner crown assembly groove; The left vertical protrusion is arranged at the upper right end of the left horizontal protrusion, and the right vertical protrusion is arranged at the upper left end of the right horizontal protrusion; The upper end surfaces of the left side transverse protrusion and the right side transverse protrusion are respectively the third reference plane and the fourth reference plane; When the assembled stationary blade is placed on the tooling base, the lower left end face of the outer crown assembly table of the assembled stationary blade abuts the third reference plane, and the lower right end face of the inner crown assembly table of the assembled stationary blade abuts the fourth reference plane; the lower right end face of the outer crown assembly table and the lower left end face of the inner crown assembly table are respectively clearance-matched with the top end face of the tooling base.
3. The assembled stationary blade brushing tool according to claim 1 is characterized in that: The outer crown assembly groove and the inner crown assembly groove are arc-shaped, and correspondingly, the left side transverse protrusion and the right side transverse protrusion are arc-shaped.
4. The assembled stationary blade brushing tool according to claim 1 is characterized in that: The left side surface of the tooling base is a fifth reference plane having the same shape as the left side surface of the outer crown, and the right side surface of the tooling base is a sixth reference plane having the same shape as the right side surface of the inner crown.
5. The assembled stationary blade brushing tool according to claim 1 or 2, characterized in that: The protrusion structure is a slider protrusion, and the assembled stationary blade is slidably fitted with the protrusion structure.