A turbine blade film hole detection device and method

Abstract

The application discloses a turbine blade film hole detection device and a detection method, and belongs to the field of turbine blade film hole processing technology, and comprises a detection device base, a rotating base, a fence, a pressing clamp and a strong light lamp; the rotating base is installed on the top of the detection device base; the fence is installed on the outer side of the rotating base; the pressing clamp is installed on the rotating base and is used for fixing and positioning the detected part; the strong light lamp is installed in the cavity of the detected part, the strong light emitted by the strong light lamp passes through the film hole and is used for judging whether the film hole of the part is through or not. The application is used for the film hole permeability detection of the hollow turbine blade of an aero-engine, and makes up for the defects of the high-pressure water detection and the human eye recognition detection mode.

Description

Technical Field

[0001] This invention belongs to the field of turbine blade film film hole processing technology, specifically to a turbine blade film film hole detection device and detection method. Background Technology

[0002] Currently, the main methods for detecting the permeability of air film pores in turbine blades include high-pressure water flow and cold light source human eye recognition, each with its own characteristics.

[0003] The high-pressure water testing method involves filling the hollow blade with high-pressure water using specialized equipment. The water is then ejected through the film cooling vents, and the permeability of the vents is determined by observing the ejected water column. However, the water column ejected from the turbine blade's film cooling vents is dense and transparent, making it easy to confuse the two methods. The cold light source human eye identification method involves placing a cold light source inside the hollow blade and observing whether the film cooling vents are transparent to determine their permeability. However, during testing, the part is placed in natural light, and the cold light source and natural light can easily cause confusion. Furthermore, this method is highly random and susceptible to human error, leading to potential testing errors.

[0004] In summary, existing methods for detecting film pores in turbine blades are prone to confusion, susceptible to human error, and have significant detection errors. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a turbine blade film pore detection device and method for detecting the film pore permeability of hollow turbine blades in aero-engines, thus overcoming the shortcomings of high-pressure water detection and human eye recognition detection methods.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A turbine blade film pore detection device includes a detection device base, a rotating base, a enclosure, a clamping fixture, and a high-intensity lamp;

[0008] A rotating base is installed on the top of the base of the detection device; a barrier is installed on the outside of the rotating base;

[0009] A clamping fixture is installed on the rotating base, which is used to fix and position the part to be tested; the high-intensity lamp is installed inside the cavity of the part to be tested, and the high-intensity light emitted by the lamp passes through the air film hole to determine whether the air film hole of the part is open.

[0010] Preferably, the base of the detection device has a hollow structure, and an energy storage battery is installed inside the base of the detection device. The energy storage battery is connected to a high-intensity lamp to provide power.

[0011] Preferably, the diameter of the air film pores is in the range of 0.2-1 mm.

[0012] Preferably, the illuminance of the high-intensity lamp is in the range of 100 to 550 lx.

[0013] Preferably, the high-intensity lamp is located at the center of the turbine blade.

[0014] Preferably, the high-intensity lamp is fixed to the top of the telescopic rod, and the telescopic rod is fixed to the center position of the rotating base, for adjusting the illumination position of the high-intensity lamp.

[0015] Preferably, the clamping fixture includes a column, a pressure plate, and a wing nut. The column is fixed on a rotating base. The pressure plate has a through hole, which is fitted onto the column. The top of the column has a thread, and the wing nut is connected to the column thread for clamping the turbine blades.

[0016] Preferably, the base of the detection device is provided with a groove, the bottom of the rotating base is provided with a boss, a bearing is provided inside the groove, the boss cooperates with the inner ring of the bearing, and the rotating base is rotatably connected to the base of the detection device through the bearing.

[0017] A method for detecting film pores in turbine blades, characterized in that, based on the turbine blade film pore detection device described in any one of the above-mentioned methods, it includes the following steps.

[0018] Step 1: Fix the hollow turbine blades onto the clamping fixture and press them firmly. When fixing the hollow turbine blades, place a high-intensity light inside the hollow turbine blades.

[0019] Step 2: After the hollow turbine blades are installed and fixed, fasten the upper part of the enclosure to place the hollow turbine blades in a dark environment.

[0020] Step 3: Turn on the high-intensity light and expose the area to strong light.

[0021] Step 4: Observe whether the air film holes are transparent through the observation window;

[0022] Step 5: When observing the part, in order to observe the air film pores in different areas, the rotating base can be rotated while observing and adjusted to the air film pores to be observed.

[0023] Preferably, in step 1, the high-intensity light is fixed at the center of the hollow turbine blade.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] This invention provides a turbine blade film film permeability detection device. The device uses a clamping fixture to fix the part in place, creating a relatively dark environment. A strong light is placed inside the part's cavity; the light passes through the film film permeability holes, indicating whether the holes are open and thus detecting their permeability. A rotating base rotates the part, allowing for the detection of film film permeability at different locations on the blade. This invention offers a simple and rapid detection method, quickly achieving film film permeability detection. It is used for detecting film film permeability in hollow turbine blades of aero-engines, overcoming the shortcomings of high-pressure water testing and human visual inspection methods. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a rapid turbine blade film pore detection device according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of a rapid turbine blade film pore detection device according to an embodiment of the present invention;

[0028] In the attached diagram: 1 is the base of the testing device, 2 is the energy storage battery, 3 is the rotating base, 4 is the enclosure, 5 is the clamping fixture, and 6 is the high-intensity light. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0030] The present invention provides a device for detecting film pores in a fast turbine blade, the device comprising: a detection device base 1, an energy storage battery 2, a rotating base 3, a clamping fixture 5, a barrier 4, and a high-intensity lamp 6;

[0031] The detection device base 1 is a hollow structure, mainly used for arranging the light source circuit and installing and fixing the rotating base 3 and the cold light source. The rotating base 3 is fixed on the base, the clamp and the cold light source are fixed on the rotating base 3, and the energy storage battery 2 provides energy for the light source.

[0032] The energy storage battery 2 is placed inside the cavity of the detection device base 1 to provide energy for the high-intensity lamp 6.

[0033] The base 1 of the detection device has a hollow structure, which is used to install the energy storage battery 2, wiring, etc., and is also used for the installation and fixation of the rotating base 3, the high-intensity lamp 6, and the clamp.

[0034] The rotating base 3 is used to fix the clamping fixture 5. The part is fixed on the clamping fixture 5. By adjusting the rotating base 3, the part is rotated to realize the detection of air film holes in the part at different positions of the blade.

[0035] The clamping fixture 5 is fixed on the rotating base 3 and is used for fixing and positioning the parts.

[0036] The main function of the enclosure 4 is to create a relatively dark environment.

[0037] The high-intensity lamp 6 mainly provides light energy. When the part is being tested for transparency, the high-intensity lamp 6 needs to be placed inside the cavity of the part. The high light passes through the air film hole to determine that the air film hole of the part is open.

[0038] The present invention provides a method for rapid detection of film pores in turbine blades, comprising:

[0039] S1, fix the hollow turbine blade on the clamping fixture 5 and clamp it. When the part is fixed, the high-intensity lamp 6 is placed in the hollow blade.

[0040] S2, In order to facilitate the installation of parts, the upper part of the enclosure 4 is movable. After the parts are installed and fixed, the upper part of the enclosure 4 is fastened to place the parts in a dark environment.

[0041] S3, turn on the high-intensity light 6 switch to achieve high-intensity illumination;

[0042] S4, observe whether the air film pores are transparent through the observation window;

[0043] S5. When observing the part, in order to observe the air film holes in different areas, the rotating base 3 can be rotated while observing to adjust to the air film hole to be observed.

[0044] Prior to S1, the method further includes fixing a high-intensity light source in an appropriate position, wherein the appropriate position allows the light source to be placed inside the cavity of the hollow blade.

[0045] This detection method is simple and quick, and can rapidly detect the permeability of air film pores.

[0046] Example

[0047] This invention provides a rapid turbine blade film porosity detection device, such as... Figure 1 and Figure 2 As shown, the air film pore detection device includes: detection device base 1, energy storage battery 2, rotating base 3, enclosure 4, clamping fixture 5, and high-intensity light 6.

[0048] The detection device base 1 has a hollow structure, and an energy storage battery 2 is installed inside the detection device base 1. The energy storage battery 2 is connected to a high-intensity lamp 6 to provide power. In this embodiment, the illumination intensity of the high-intensity lamp is in the range of 100 to 550 lx. In this embodiment, the diameter of the air film pore is in the range of 0.2-1 mm.

[0049] The detection device base 1 has a groove, and the bottom of the rotating base 3 has a boss. A bearing is installed inside the groove, and the boss cooperates with the inner ring of the bearing. The rotating base 3 is rotatably connected to the detection device base 1 through the bearing. The rotating base 3 is used to fix the clamping fixture 5. The part is fixed on the clamping fixture 5. By adjusting the rotating base 3, the part is rotated, realizing the detection of air film holes of the part at different positions of the blade.

[0050] The clamping fixture 5 includes a column, a pressure plate, and a wing nut. The column is fixed on the rotating base 3. The pressure plate has a through hole, which is fitted onto the column. The top of the column has a thread, and the wing nut is threaded into the column for clamping the turbine blades. The clamping fixture 5 is fixed on the rotating base 3 and is used for fixing and positioning parts.

[0051] The main function of the enclosure 4 is to create a relatively dark environment.

[0052] The high-intensity lamp 6 primarily provides light energy. During the transparency testing of a part, the high-intensity lamp 6 needs to be placed inside the part's cavity. The intense light passes through the film membrane aperture, indicating that the aperture is open. In this embodiment, the high-intensity lamp 6 is fixed to the top of the telescopic rod, which is fixed at the center of the rotating base 3, used to adjust the illumination position of the high-intensity lamp 6. The high-intensity lamp 6 is positioned at the center of the turbine blade.

[0053] This invention also provides a method for rapid detection of film pores in turbine blades. The detection method is implemented using the aforementioned film pore detection device, and the method includes:

[0054] S1, fix the hollow turbine blade on the clamping fixture 5 and press it tightly. When the part is fixed, the high-intensity lamp 6 is placed in the hollow blade.

[0055] S2. To facilitate the installation of parts, the upper part of the enclosure 4 is movable. After the parts are installed and fixed, the upper part of the enclosure 4 is fastened to place the parts in a dark environment.

[0056] S3, turn on the high-intensity light 6 switch to achieve high-intensity illumination.

[0057] S4, observe whether the air film pores are transparent through the observation window.

[0058] S5. When observing the part, in order to observe the air film holes in different areas, the rotating base 3 can be rotated while observing to adjust to the air film hole to be observed.

[0059] A high-pressure turbine guide vane for a certain type of engine has a total of 200 film cooling holes distributed throughout the entire vane. Before fixing the vane to the fixture, a high-intensity light 6 is installed in an appropriate position, allowing the light source to be placed inside the hollow vane cavity. The upper part of the enclosure 4 is then secured, placing the part in a dark environment. The high-intensity light 6 is then turned on to provide strong illumination. The transparency of the film cooling holes is then observed through the viewing window. To observe the film cooling holes in different areas, the rotating base 3 can be rotated while observing, adjusting to the desired area. After the transparency of the film cooling holes of the entire vane is identified, the upper part of the enclosure 4 is opened, the part is removed, and the next part is replaced for transparency identification.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A device for detecting film pores in turbine blades, characterized in that, Includes a detection device base (1), a rotating base (3), a enclosure (4), a clamping fixture (5), and a high-intensity light (6); A rotating base (3) is installed on the top of the base (1) of the detection device; a barrier (4) is installed on the outside of the rotating base (3); the barrier (4) places the hollow turbine blade in a dark environment; A clamping fixture (5) is installed on the rotating base (3). The clamping fixture (5) is used to fix and position the part to be tested. The high-intensity lamp (6) is installed inside the cavity of the part to be tested. The high-intensity light emitted by the high-intensity lamp (6) passes through the air film hole and is used to determine whether the air film hole of the part is open. The air film hole is observed to see if it is transparent through the observation window. The high-intensity lamp (6) is fixed to the top of the telescopic rod, and the telescopic rod is fixed to the center of the rotating base (3) to adjust the irradiation position of the high-intensity lamp (6); The clamping fixture (5) includes a column, a pressure plate and a wing nut. The column is fixed on the rotating base (3). The pressure plate has a through hole, which is fitted onto the column. The top of the column has a thread, and the wing nut is connected to the column thread for clamping the turbine blade.

2. The turbine blade film pore detection device according to claim 1, characterized in that, The detection device base (1) has a cavity structure, and an energy storage battery (2) is installed inside the detection device base (1). The energy storage battery (2) is connected to a high-intensity lamp (6) to provide power.

3. The turbine blade film pore detection device according to claim 1, characterized in that, The illuminance range of the high-intensity lamp is 100–550 lx.

4. The turbine blade film pore detection device according to claim 1, characterized in that, The high-intensity lamp (6) is located at the center of the turbine blade.

5. The turbine blade film pore detection device according to claim 1, characterized in that, The detection device base (1) is provided with a groove, and the bottom of the rotating base (3) is provided with a boss. A bearing is provided inside the groove, and the boss cooperates with the inner ring of the bearing. The rotating base (3) is rotatably connected to the detection device base (1) through the bearing.

6. A method for detecting film pores in turbine blades, characterized in that, A turbine blade film pore detection device according to any one of claims 1 to 5 includes the following steps. Step 1: Fix the hollow turbine blades onto the clamping fixture (5) and press them firmly. When fixing the hollow turbine blades, place the high-intensity lamp (6) inside the hollow turbine blades. Step 2: After the hollow turbine blades are installed and fixed, fasten the upper part of the enclosure (4) to place the hollow turbine blades in a dark environment; Step 3: Turn on the high-intensity light (6) and irradiate with strong light; Step 4: Observe whether the air film holes are transparent through the observation window; Step 5: When observing the part, in order to observe the air film holes in different areas, the rotating base (3) can be rotated while observing and adjusted to the air film hole to be observed.

7. The method for detecting film pores in turbine blades according to claim 6, characterized in that, In step 1, the high-intensity lamp (6) is fixed at the center of the hollow turbine blade.

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