Heavy gas turbine ceramic heat insulation tile mounting groove size coloring mark inspection tool

Abstract

The utility model discloses a heavy gas turbine ceramic heat insulation tile mounting groove size coloring mark inspection tool, which is characterized in that a ceramic heat insulation tile block simulates the actual mounting state of a reignition gas turbine when leaving a factory according to the geometric dimension of a ceramic heat insulation tile block mounting groove through a coloring mark inspection method; judging whether the ceramic heat-insulating tile mounting groove meets the geometric requirements of the drawing or not according to the area of the mounting mark of the ceramic heat-insulating tile mounting groove; according to the method, a simulation gas turbine installation detection tool is required to be coated with a Prussian blue / red lead powder coloring agent; then the ceramic heat insulation tile blocks are installed, and in the process, the coloring agent can be attached to the surfaces of the ceramic tile block installation grooves; and analyzing and judging whether the position and the size of the mark on the tooth surface meet the requirements. Compared with the existing detection technology, the device simulates the real working condition of the ceramic tile to carry out coloring inspection, and compared with the traditional three-coordinate size measurement, the detection cost is reduced, the detection precision is improved, and meanwhile, the delivery detection efficiency of the ceramic tile is improved.

Description

Technical Field

[0001] This utility model relates to a tooling for inspecting the size of the mounting groove of a heavy-duty gas turbine ceramic heat insulation tile by coloring imprints, belonging to the field of ceramic forming parts assembly quality inspection. Background Technology

[0002] The ceramic insulating tiles in the combustion chamber of heavy-duty gas turbines are fixed under load using elastic support components. These components, through their flexible design, effectively absorb the thermal vibration energy induced by high-temperature combustion gas, significantly reducing fatigue damage to the ceramic matrix caused by mechanical vibration. The contact surface between the elastic component and the insulating ceramic tile requires high dimensional accuracy to ensure stable clamping force under high-temperature cyclic loading. However, there are challenges in detecting the geometric dimensions of the ceramic insulating tile mounting groove.

[0003] 1) Mismatched detection methods:

[0004] Contact type: Traditional CMM inspection uses discrete point sampling (spacing ≥ 0.5 mm), which cannot reproduce the actual contact state of the microscopic peaks and valleys (wavelength ≤ 0.1 mm) on the ceramic surface, resulting in a large measurement error.

[0005] Non-contact measurement: Blue light scanning measurement. Due to the light-transmitting properties of ceramic tile materials, blue light scanning measurement has a large error.

[0006] 2) Properties of ceramic materials

[0007] Ceramic materials (such as corundum) have a surface porosity of ≥5% and extremely high hardness after sintering, which makes contact measurement probes (such as coordinate measuring machines, dial indicators, micrometers, etc.) prone to wear. Utility Model Content

[0008] To address the problems existing in the prior art, this utility model provides a tooling for inspecting the color imprints on the mounting grooves of heavy-duty gas turbine ceramic heat insulation tiles, thereby solving the aforementioned technical problems.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: a fixture for inspecting the size of the mounting groove of a heavy-duty gas turbine ceramic heat insulation tile, which uses the following mechanism for inspection. The mechanism includes a detection platform; two simulated elastic support members are provided on the detection platform; the space between the two simulated elastic support members is used for the installation of the heavy-duty gas turbine ceramic heat insulation tile; mounting grooves are provided on the left and right sides of the heavy-duty gas turbine ceramic heat insulation tile, and the groove surface of the mounting groove matches the arc-shaped surface of the simulated elastic support member; a colorant is applied to the side of the simulated elastic support member that contacts the mounting groove.

[0010] Furthermore, the colorant is Prussian blue or red lead powder, and its thickness is 5-10 μm.

[0011] Furthermore, the simulated elastic support component is an arc-shaped part with an opening, and its bottom is connected to a support frame; the protruding part at the bottom of the support frame is inserted into the slot on the detection platform to achieve effective fixation.

[0012] Furthermore, the simulated elastic support component is effectively fixed by welding the bottom support frame to the testing platform.

[0013] Furthermore, the testing platform is equipped with multiple positioning blocks, specifically positioned on the left and right sides of the placement and propulsion surface where the heavy-duty gas turbine ceramic heat insulation tile is located. These positioning blocks ensure the precise insertion of the heavy-duty gas turbine ceramic heat insulation tile between the two simulated elastic support components.

[0014] The beneficial effects of this invention are as follows: This method requires applying Prussian blue / red lead powder colorant to a simulated gas turbine installation and testing tool; then, ceramic heat insulation tiles are installed. During this process, the colorant adheres to the surface of the ceramic tile installation groove; the position and size of this imprint on the toothed surface are analyzed and judged to determine whether it meets the requirements. Compared with existing testing technologies, this invention simulates the actual working conditions of ceramic tiles for color inspection, thereby reducing testing costs, improving testing accuracy, and increasing the efficiency of ceramic tile factory testing compared to traditional coordinate measuring machine (CMM) measurements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the elastic support component structure on the installation simulation tool of this utility model;

[0016] Figure 2 This is a schematic diagram of the ceramic tile of this utility model being installed on a simulated installation tool;

[0017] Figure 3 This is a schematic diagram of the contact surface of the ceramic tile mounting groove of this utility model;

[0018] Figure 4 This is a schematic diagram of the mounting groove imprint of the ceramic heat insulation tile of this utility model.

[0019] Figure 5 This is a schematic diagram of the island area of ​​the mounting groove imprint of the ceramic heat insulation tile of this utility model.

[0020] In the diagram: 1. Testing platform; 2. Simulated elastic support component; 3. Heavy-duty gas turbine ceramic heat insulation tile; 31. Installation groove; 4. Colorant.

[0021] Figure 4 The meanings of each character are as follows: A—distance from the imprint to the mating surface; B—starting distance in the direction of imprint installation length; L—effective length of the imprint; h—width of the imprint.

[0022] Figure 5The diagram illustrates the continuity of the color imprint. In the case of a continuous imprint, the blank areas are called islands. G is the length of an island, and X is the number of islands. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a fixture for inspecting the size of the mounting groove of a heavy-duty gas turbine ceramic heat insulation tile is provided. The fixture employs the following mechanism for inspection: a detection platform 1; two simulated elastic support members 2 are mounted on the detection platform 1; the space between the two simulated elastic support members 2 is used for installing the heavy-duty gas turbine ceramic heat insulation tile 3; mounting grooves 31 are provided on the left and right sides of the heavy-duty gas turbine ceramic heat insulation tile 3, and the groove surface of the mounting groove 31 mates with the arc-shaped surface of the simulated elastic support member 2; a colorant 4 is applied to the side of the simulated elastic support member 2 that contacts the mounting groove 31.

[0026] In this embodiment, the preferred colorant 4 is Prussian blue or red lead powder, and its thickness is 8μm.

[0027] In this preferred embodiment, the simulated elastic support component 2 is an arc-shaped part with an opening, and its bottom is connected to a support frame; the protruding part at the bottom of the support frame is inserted into the slot on the detection platform 1 to achieve effective fixation.

[0028] In this preferred embodiment, the simulated elastic support component 2 is effectively fixed by welding the bottom support frame to the testing platform 1.

[0029] In this preferred embodiment, the detection platform 1 is also provided with multiple positioning blocks, which are specifically located on the left and right sides of the propulsion surface where the heavy-duty gas turbine ceramic heat insulation tile 3 is placed.

[0030] The specific steps for testing using the aforementioned institutions are as follows:

[0031] Step 1: First, polish the mounting groove 31 of the heavy-duty gas turbine ceramic heat insulation tile 3 with 200-grit sandpaper until there are no bumps on the surface;

[0032] Step 2: Fix the two elastic support components 2 on the left and right to the testing platform 1, and adjust the distance to the required size to ensure consistent clamping force under installation conditions;

[0033] Step 3: Spray colorant 4 onto the elastic support component 2 that mates with the mounting groove 31 of the heavy-duty gas turbine ceramic heat insulation tile 3;

[0034] Step 4: Then, the heavy-duty gas turbine ceramic heat insulation tile 3 is pushed forward along the groove to between the two simulated elastic support members 2 on the left and right. During this process, the installation groove 31 of the heavy-duty gas turbine ceramic heat insulation tile 3 will be coated with paint to form colored marks.

[0035] Step 5: Then take out the heavy-duty gas turbine ceramic heat insulation tile 3. At this time, judge whether it meets the requirements based on the imprint on the installation groove 31. If any item does not meet the requirements, the ceramic tile size is deemed unqualified.

[0036] Several identical metal-ceramic tiles were manufactured. The mounting grooves of some tiles were manufactured to the maximum allowable deviation specified in the drawings, while those of others were manufactured to the minimum allowable deviation. The mounting grooves of the guide rail were inspected using an imprint detection method. An imprint diagram is shown below. Figure 4 As shown in Table 1, the relevant data and inspection items collected and organized are detailed in the table.

[0037] Table 1

[0038] Imprint collection range limitation: When inspecting the entire length of the ceramic mounting groove, the 8mm area at each end of the mounting groove (i.e., the effective analysis length is L-16mm) should be excluded to avoid edge effects leading to misjudgment.

[0039] Example: If the total length of the mounting slot is 140mm, the actual analysis area is the middle 104mm (120-8×2).

[0040] Imprint morphology analysis: If the imprint shows a gradual change from presence to absence, it indicates that there is a parallelism deviation between the mounting groove and the actual reference surface, and the effective imprint length L may be less than the standard value.

[0041] The advantages of the ceramic tile installation groove imprint detection technology are shown in Table 2 below:

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heavy-duty gas turbine ceramic heat shield tile installation groove dimension color mark inspection tooling, characterized by, The utility model provides a kind of heavy-duty combustion engine ceramic heat insulating tile detection platform, including detection platform (1);The left and right two analog elastic support components (2) are provided on the detection platform (1);Heavy-duty combustion engine ceramic heat insulating tile (3) installation is used between left and right two the analog elastic support components (2);The left and right sides of the heavy-duty combustion engine ceramic heat insulating tile (3) are provided with installation slot (31), and the groove surface of this installation slot (31) and the arc surface of analog elastic support component (2) cooperate;Coloring agent (4) is applied to the side surface of analog elastic support component (2) and installation slot (31) contact.

2. A kind of heavy-duty engine ceramic insulating tile installation groove size color mark inspection tool according to claim 1, characterized by, The coloring agent (4) is Prussian blue or red ocher powder, and the thickness is 5-10 μm.

3. A kind of heavy-duty engine ceramic insulating tile installation groove size color mark inspection tool according to claim 1, characterized by, The analog elastic support component (2) is an arc-shaped member with an opening as a whole, and a support frame is connected to the bottom of the arc-shaped member; the protruding part of the support frame is clamped into the slot on the detection platform (1) to achieve effective fixation.

4. The inspection tool for the color mark of the size of the installation slot of the ceramic insulating tile of heavy-duty combustion engine according to claim 1, characterized in that, The analog elastic support component (2) is fixed to the detection platform (1) by welding the bottom support frame to the detection platform (1).

5. A heavy-duty gas engine ceramic insulating tile installation groove dimension color marking inspection tool according to claim 1, characterized in that, The detection platform (1) is further provided with a plurality of positioning blocks, which are specifically arranged on the left and right sides of the placement surface of the heavy-duty combustion engine ceramic heat insulating tile (3).

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