Modular gas turbine inlet guide vane icing test section

Abstract

The application aims to provide a modular gas turbine inlet guide vane icing test section, comprising a test section test piece, a test section connecting piece, and a test section shell, the test section connecting piece comprises a flange disc on the outside and a concave force receiving mounting ring on the inside, the test section shell is provided with a convex force receiving mounting ring at both ends, the test section connecting piece is installed at both ends of the test section shell, the test section shell and the test section connecting piece are connected through the convex force receiving mounting ring and the concave force receiving mounting ring, and the test section test piece is installed in the test section shell. The application can be quickly disassembled and installed, can realize the function of quickly replacing the test required device and test equipment without affecting other components, can freely adjust the connection mode according to the test requirement, and is suitable for various types of wind tunnels and various test requirements.

Description

Technical Field

[0001] The present invention relates to a testing apparatus, specifically a gas turbine testing apparatus. Background Technology

[0002] In the low-temperature conditions of polar seas, marine gas turbines operate in a prolonged environment of low temperature and high humidity. This can lead to icing in the ship's propulsion system, deteriorating the performance of aerodynamic components, causing compressor stall or surge, and severely affecting the stability and safety of ship operation. The compressor inlet is the most common site of icing in a gas turbine, with key icing components including the fairing, inlet guide vanes, support plates, and inlet mouthpiece. To investigate the icing patterns of gas turbine inlet components under different navigation conditions, a visual icing test bench with adjustable inlet parameters needs to be constructed. This bench should also be easily disassembled and assembled to facilitate the installation of measuring equipment, replacement of test specimens, and acquisition of icing data.

[0003] Most existing icing test benches and wind tunnels are designed as a single unit. Although they can achieve the purpose of obtaining icing data, if a part of the test bench needs to be replaced or additional testing instruments need to be added, the only solution is to replace the entire test section, which is time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of this invention is to provide a modular gas turbine inlet guide vane icing test section that can solve the problems of time-consuming and labor-intensive testing and inconvenient replacement and maintenance of existing test benches.

[0005] The objective of this invention is achieved as follows:

[0006] This invention discloses a modular gas turbine inlet guide vane icing test section, characterized in that it includes a test section test piece, a test section connector, and a test section shell. The test section connector includes an outer flange disc and an inner concave force-bearing mounting ring. Both ends of the test section shell are provided with convex force-bearing mounting rings, and the test section connector is installed at both ends of the test section shell. The test section shell and the test section connector are connected by the convex and concave force-bearing mounting rings. The test section test piece is installed inside the test section shell.

[0007] The present invention may also include:

[0008] 1. The test section test piece includes a cover plate, a slide seat, and a blade. A slide is provided in the slide seat, one end of the blade is installed in the slide, a threaded hole is provided on the cover plate, and the other end of the blade is connected to the cover plate by bolts. The blade and the slide seat are located in the test section shell, and the slide seat is connected to the test section shell by a tenon and mortise structure.

[0009] 2. A wedge-shaped groove structure is provided on the concave force-bearing mounting ring, and a wedge-shaped boss structure is provided on the convex force-bearing mounting ring. The wedge-shaped groove structure and the wedge-shaped boss structure cooperate with each other.

[0010] 3. Windows are reserved on the top and sides of the test section shell. Test section functional windows are installed at the window positions. The test section functional windows include a quartz glass test section observation window, a measurement function window, and a top square observation window.

[0011] 4. The functional windows of the test section are positioned by setting cylindrical protrusions and cylindrical recesses. The cylindrical protrusions are used for positioning, and the cylindrical recesses are fitted with high-strength magnets to connect with the test section shell.

[0012] 5. The convex and concave load-bearing mounting rings are equipped with clamping or locking structures.

[0013] The advantages of this invention are as follows: because the test section is decomposed into multiple modules, it can be quickly disassembled and installed during application, and can quickly replace the devices and testing equipment required for the test without affecting other components. Moreover, the connection method can be freely adjusted according to the test needs, making it suitable for various types of wind tunnels and various test requirements. Furthermore, the test section of this invention is equipped with a side functional window, which can be installed to measure the incoming flow parameters when necessary. After the measurement is completed, the observation window can be changed to observe and record the test process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a schematic diagram of the connecting components for the test section;

[0017] Figure 4 This is a schematic diagram of the shell structure of the test section;

[0018] Figure 5 This is a schematic diagram of the test specimen structure in the test section;

[0019] Figure 6 This is a schematic diagram of the functional window structure of the test section;

[0020] Figure 7 This is a schematic diagram showing the fit between the test section connector and the shell.

[0021] Figure 8 This is a schematic diagram showing the fit between the test piece and the shell in the test section. Detailed Implementation

[0022] The invention will now be described in more detail with reference to the accompanying drawings:

[0023] Combination Figure 1-8 This invention discloses a modular gas turbine inlet guide vane icing test section, which mainly includes a test section connector 1, a test section shell 2, a test section test piece 3, a test section functional window 4, and other structures. One end of the test section connector 1 is a flange disc 5 that can match the upstream and downstream pipelines, and the other end is a concave force-bearing mounting ring 6 that mates with the test section shell 2. The inner diameter is the same as that of the upstream and downstream wind tunnels and mounting pieces, and a smooth transition is required. The concave force-bearing mounting ring 6 that mates with the test section shell 2 should have a wedge-shaped groove structure 7, which has the functions of self-sealing and self-centering limit.

[0024] The test section housing 2 has convex force-bearing mounting rings 8 at both ends that can mate with the upstream and downstream test section connectors 1. Each convex force-bearing mounting ring 8 mates with the test section connector 1 should have a wedge-shaped boss structure 9, which also has self-sealing and self-centering limiting functions, and mates with the wedge-shaped groove structure 7 of the concave force-bearing mounting ring 6. Windows should be reserved on the top and sides of the test section housing 2 to provide installation positions for the test section functional windows 4, provide channels for installing the test section test pieces 3, and provide windows for optical measurement equipment and image recording and observation.

[0025] The test section test piece 3 includes a slide seat 10, a blade 11, and a cover plate 12. The blade 11 is connected to the slide seat 10 and the cover plate 12 by means of bosses and grooves, and bolts. The slide seat 10 is connected to the test section shell 2 by means of a tenon and mortise structure. After installation, it should be ensured that it fits well with the test section shell 2, that the internal cavity is flat without protrusions or depressions, that the internal airflow is stable, and that it has good sealing performance.

[0026] The test section functional windows 4 are replaceable functional covers installed on both sides and top of the test section housing 2, including but not limited to quartz glass test section observation windows 13, measurement function windows 14, and top square observation windows 15. They can be replaced according to different test contents and requirements. When it is necessary to observe and record images of the test section test piece 3, quartz glass test section observation windows 13 with good light transmittance can be installed. When it is necessary to measure flow field parameters inside the test section housing 2, measurement function windows 14 designed according to the specific measuring equipment are installed. The top square observation window 15 can provide a light source for optical measuring equipment and expand the field of view according to the actual test application. The test section functional windows 4 are positioned by the cylindrical protrusions 16 of the functional windows, and high-strength magnets are installed in the cylindrical recesses 17 of the functional windows to connect with the test section housing 2.

[0027] The test section connector 1 is not limited to the above structure. It can be added or removed at will according to actual needs to change the length at the front or rear of the test section or to add measuring equipment. When it is necessary to add a connector in the middle, both ends are installation ends that can cooperate with the upstream and downstream.

[0028] The convex force-bearing mounting ring 8 and concave force-bearing mounting ring 6 that cooperate with the test section connector 1 and the test section shell 2 have clamping or locking structures to ensure the stability and sealing of the connection between the test section body and the connector during the test.

[0029] There is a connecting sealing device between the functional window of the test section and the shell 2 of the test section to ensure the stability of the equipment installed on the side and the overall sealing of the test section during the test.

[0030] Combination Figure 1 , Figure 2 This embodiment of the invention comprises a test section connector 1, a test section shell 2, a test section test piece 3, and a test section functional window 4. Specifically, this embodiment uses two test section connectors 1, one at the front and one at the back, connected to the upstream and downstream test wind tunnel pipelines. Figure 3 As shown, in the test section connector 1, a wedge-shaped groove structure 7 composed of two concentric arcs is machined on one side of the concave force-bearing mounting ring 6. This structure serves to center and limit the test section connector 1 and the test section shell 2, ensuring a good sealing effect. A locking groove is machined on the outer ring of the concave force-bearing mounting ring 6 to ensure a good fit between the test section connector 1 and the test section shell 2. A locking clamp can be used to achieve the required fit. A flange disc 5 is provided on the other side of the test section connector 1, which can be connected to the upstream and downstream pipelines of the test bench via bolts and nuts. This connection method enables the modular test section to be replaceable and easy to disassemble.

[0031] Combination Figure 3 , Figure 7 In this embodiment of the invention, the test section shell 2 has wedge-shaped boss structures 9 at both ends that connect and cooperate with the wedge-shaped groove structure 7 of the test section connector 1. A convex force-bearing mounting ring 8 is provided on the periphery for easy locking and connection, cooperating with the concave force-bearing mounting ring 6 of the test section connector 1. For example... Figure 4 As shown, functional windows 4 of different sizes are opened at different positions on the test section shell 2. Observation windows or specific experimental equipment can be installed on the functional windows as needed during the experiment to record the icing conditions. The test section shell 2 has an installation channel for mounting the cover plate 12. Through the installation channel, the blade 11 can be positioned and installed on the slide seat 10 and the cover plate 12 by the boss and groove structure, and fixed inside the test section shell 2 for the experiment. The modular test section in this embodiment can be applied to three-section or multi-section front-and-back connected test benches for the purpose of icing experimental data and ice patterns.

[0032] Combination Figure 5 , Figure 8The test section 3 of this embodiment includes a slide seat 10, blades 11, and a cover plate 12. The cover plate 12 is an assembly component with a certain curvature, which is consistent with the concentric arc curvature of the wedge-shaped groove structure 7 described above. Bolt mating holes are drilled above the cover plate 12 to fix one side of the casing surface of the blades 11 required for the test. The hub surface of the blades 11 is positioned on the slide seat 10 by a boss and a groove, and is fixedly connected by bolt mating holes on the slide seat 10. One or more blades 11 can be installed inside the test section housing 2 according to test requirements.

[0033] Combination Figure 2 , Figure 6 Mounting openings for the test section functional windows 4 are provided on both sides and top of the test section housing 2, offering windows for optical measurement equipment and image recording and observation. For example... Figure 6 As shown, the test section functional window 4 includes a test section observation window 13 installed on both sides, a measurement function window 14, and a top square observation window 15. The test section observation window 13 is made of quartz glass with good light transmittance and is installed when it is necessary to observe and record images of the test section test piece 3. The measurement function window 14 is a window structure specially designed for optical measuring instruments and is installed when it is necessary to measure the flow field distribution and parameters within the test section. The top square observation window 15 is an auxiliary observation window installed on the top of the test section shell 2 to assist the optical measuring instrument in its testing work and to observe the top test conditions.

[0034] The test section functional window 4 of this embodiment includes a test specimen observation window 13, a measurement functional window 14, and a top square observation window 15. Each window has a cylindrical protrusion 16 and a cylindrical recess 17 at its edge. Corresponding cylindrical recesses 18 are designed around the window opening position on the test section housing 2. The cylindrical protrusions 16 and cylindrical recesses 18 are used to position the test section functional window 4 on the test section housing 2. High-strength magnets are installed within the cylindrical recesses 17 and 18 to secure the test section functional window 4, facilitating its replacement and measurement.

Claims

1. A modular gas turbine inlet guide vane icing test section, characterized in that: The test section includes a test piece, a test section connector, and a test section shell. The test section connector includes an outer flange disc and an inner concave force-bearing mounting ring. Both ends of the test section shell are provided with convex force-bearing mounting rings. The test section connector is installed at both ends of the test section shell. The test section shell and the test section connector are connected by the convex force-bearing mounting ring and the concave force-bearing mounting ring. The test piece is installed inside the test section shell. The test section test piece includes a cover plate, a slide seat, and a blade. A slide is provided in the slide seat, one end of the blade is installed in the slide, a threaded hole is provided on the cover plate, and the other end of the blade is connected to the cover plate by bolts. The blade and the slide seat are located in the test section shell, and the slide seat is connected to the test section shell by a tenon and mortise structure.

2. The modular gas turbine inlet guide vane icing test section according to claim 1, characterized in that: The concave force-bearing mounting ring is provided with a wedge-shaped groove structure, and the convex force-bearing mounting ring is provided with a wedge-shaped boss structure. The wedge-shaped groove structure and the wedge-shaped boss structure cooperate with each other.

3. The modular gas turbine inlet guide vane icing test section according to claim 1, characterized in that: Windows are reserved on the top and sides of the test section shell. Test section functional windows are installed at the window positions. The test section functional windows include a quartz glass test section observation window, a measurement function window, and a top square observation window.

4. The modular gas turbine inlet guide vane icing test section according to claim 3, characterized in that: The functional windows of the test section are positioned by setting cylindrical protrusions and cylindrical recesses. The cylindrical protrusions are used for positioning, and the cylindrical recesses are fitted with high-strength magnets to connect with the test section shell.

5. The modular gas turbine inlet guide vane icing test section according to claim 1, characterized in that: The convex and concave load-bearing mounting rings are equipped with clamping or locking structures.

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