Turbine blade test bench

Abstract

The utility model discloses a turbine blade test bench, which belongs to the related technical field of turbine blades, and comprises a motor, the output end of the motor is connected with a gear box, and the side end of the gear box is detachably connected with a combustion chamber; a transmission shaft is inserted into the combustion chamber; a turbine disc is arranged at the side end of the transmission shaft; a hot air pipe is arranged at the side end of the combustion chamber and communicated with the interior of the combustion chamber, an ignition nozzle is arranged on the hot air pipe, and a water pipe and an exhaust channel are arranged on the other side of the combustion chamber. According to the turbine blade test bench provided by the utility model, through the design of driving the gearbox by the motor, a stable and controllable power source can be provided, a turbine disc is ensured to reach a required high rotating speed in a test process, and actual working conditions are simulated. The combustion chamber which is detachably connected with the side end is convenient to install, maintain and replace, and can be rapidly detached especially during different tests or repair, so that the flexibility and the maintenance efficiency of the test bed are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to turbine blade related technical field, concretely is a turbine blade test bench. BACKGROUND

[0002] In high-performance power systems such as aero-engines and gas turbines, turbine blades, as key components, directly affect the working efficiency and reliability of the entire system. Therefore, it is crucial to accurately test and test turbine blades. Although the existing turbine blade test bench can provide basic testing functions, there are still deficiencies in simulating real working conditions, operation convenience, maintenance efficiency, and test accuracy.

[0003] Traditional turbine blade test benches may use direct drive or hydraulic drive, which has limitations in power transmission efficiency and control accuracy, making it difficult to accurately simulate the high-speed environment of turbine blades in actual work.

[0004] The existing combustion chamber design is often fixed and cannot be disassembled, which limits the adaptability of different types of turbine blades and increases the difficulty of maintenance and replacement. The existing turbine blade test bench has a complex structure, is inconvenient to maintain, and is difficult to quickly adapt to different testing needs, affecting the flexibility of the test and the efficiency of the maintenance.

[0005] To solve the above problems, the utility model "a turbine blade test bench" puts forward an improved technical scheme, which aims to make it closer to the actual working condition, enhance the accuracy and reliability of the test, and improve the convenience of operation and the efficiency of maintenance. INVENTION CONTENTS

[0006] To solve the above problems, the utility model provides a turbine blade test bench, which is used to solve the technical problem that the existing test bench cannot accurately simulate the high-speed environment of turbine blades in actual work and the difficulty of maintenance and replacement.

[0007] To achieve the above purpose, the utility model adopts the technical scheme of:

[0008] A turbine blade test bench, comprising a motor, the output end of the motor is connected with a gear box, the side end of the gear box is detachably connected with a combustion chamber; a transmission shaft is inserted in the combustion chamber, the side end of the transmission shaft is provided with a turbine disc; the side end of the combustion chamber is provided with a hot gas pipe, the hot gas pipe is in communication with the combustion chamber, a igniter is arranged on the hot gas pipe, the other side of the combustion chamber is provided with a water pipe and an exhaust passage.

[0009] As a further improvement of the above scheme, the two sides of the combustion chamber are provided with mounting parts, which are connected with the gear box by bolts.

[0010] As a further improvement to the above solution, the combustion chamber is configured as an annular structure, an annular sheet is detachably connected to the combustion chamber, and the annular sheet is configured as a honeycomb shape.

[0011] As a further improvement of the above solution, the combustion chamber is provided with a splicing structure.

[0012] As a further improvement of the above solution, the exhaust passage is configured as a zigzag structure.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The following are the beneficial effects of the various technical solutions for the turbine blade test bench:

[0015] 1. The utility model provides a turbine blade test bench that can provide a stable and controllable power source through the design of a motor-driven gearbox, ensuring that the turbine disc reaches the required high speed during the test and simulating actual working conditions. The combustion chamber design with detachable side connections facilitates installation, maintenance and replacement, especially when performing different tests or repairs, the combustion chamber can be quickly disassembled to improve the flexibility and maintenance efficiency of the test bench. The drive shaft passes through the combustion chamber and is connected to the turbine disc, so that the turbine disc can be tested at high temperature and high speed, more realistically simulating the environment of the turbine blades in actual work. By connecting the hot air pipe to the combustion chamber and setting an ignition nozzle, the combustion process can be effectively controlled, precise ignition and combustion control can be achieved, and a stable heat source can be provided for the test.

[0016] 2. The mounting parts on both sides of the combustion chamber of the utility model are connected to the gear box with bolts. This connection method provides a strong fixed structure, ensuring that the combustion chamber can work stably under high temperature and high pressure, reducing vibration and displacement during the test, and improving the test accuracy.

[0017] 3. The annular combustion chamber structure of the utility model is combined with a detachable annular plate, which not only enhances the combustion efficiency, but also facilitates the adjustment of the hole design on the annular plate according to the test requirements to adapt to different test conditions and facilitate the passage of hot gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the present utility model.

[0019] Figure 2 for Figure 1 Enlarged schematic diagram of point A in the middle.

[0020] In the figure: 1. Motor; 2. Gearbox; 3. Combustion chamber; 4. Turbine disc; 5. Water pipe; 6. Ignition nozzle; 7. Mounting part; 8. Hot air pipe; 9. Ring plate; 10. Drive shaft; 11. Exhaust duct. DETAILED DESCRIPTION

[0021] In order to make the technical personnel better understand the technical solutions, the utility model is described in detail below in combination with examples, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model.

[0022] As shown in Figures 1-2 , the specific scheme of the embodiment is: a turbine blade test bench, comprising a motor 1, the output end of the motor 1 is connected with a gear box 2, the side end of the gear box 2 is detachably connected with a combustion chamber 3; the transmission shaft 10 is inserted in the combustion chamber 3, and the side end of the transmission shaft 10 is provided with a turbine disc 4; the side end of the combustion chamber 3 is provided with a hot gas pipe 8, the hot gas pipe 8 is communicated with the combustion chamber 3, the hot gas pipe 8 is provided with an ignition nozzle 6, and the other side of the combustion chamber 3 is provided with a water pipe 5 and an exhaust passage 11.

[0023] As shown in Figures 1-2 , as a preferred mode of the above embodiment, the combustion chamber 3 is provided with a mounting portion 7 on both sides, and the gear box 2 is connected by bolts.

[0024] As shown in Figures 1-2 , as a preferred mode of the above embodiment, the combustion chamber 3 is provided with an annular structure, and the annular sheet 9 is detachably connected in the combustion chamber 3, and the annular sheet 9 is provided with a honeycomb shape and has a flow guiding effect.

[0025] As shown in Figures 1-2 , as a preferred mode of the above embodiment, the combustion chamber 3 is provided with a splicing structure.

[0026] As shown in Figures 1-2 , as a preferred mode of the above embodiment, the exhaust passage 11 is provided with a zigzag structure.

[0027] The design principle of the turbine blade test bench of the utility model is to simulate the rotating speed and environmental temperature of the turbine blade under the real working condition by integrating multiple systems. The core of the test bench is that the motor drives the high-speed gear box, and then the bearing seat drives the test turbine blade, so that the test requirements of high temperature and high speed in the combustion chamber are met.

[0028] Power transmission:

[0029] The motor 1 provides power, drives the gear box 2 through the output end, and realizes power transmission.

[0030] Combustion and temperature control:

[0031] The combustion chamber 3 realizes combustion control through the hot gas pipe 8 and the ignition nozzle 6, generates a high-temperature environment, and simulates the high-temperature condition encountered by the turbine blade in work.

[0032] Transmission and support:

[0033] The transmission shaft 10 is inserted into the combustion chamber 3, and its side end is connected to the turbine disc 4, ensuring the high-speed rotation of the turbine disc under high temperature.

[0034] Cooling and exhaust:

[0035] The water pipe 5 is used for cooling, and the exhaust passage 11 is responsible for the exhaust of waste gas, ensuring safety and environmental protection during the test.

[0036] Structural stability:

[0037] The two sides of the combustion chamber 3 are connected to the gear box 2 through the mounting part 7 by bolts, enhancing the stability of the overall structure.

[0038] Annular combustion chamber structure:

[0039] The annular combustion chamber 3 is detachably connected with the annular sheet 9, which is set as a honeycomb shape and has a flow guiding effect, optimizing the hot gas flow and temperature distribution.

[0040] Working process:

[0041] 1. System start:

[0042] Start the motor 1, the motor drives the gear box 2, and the gear box drives the turbine disc 4 to rotate through the transmission shaft 10.

[0043] 2. Combustion chamber heating:

[0044] Ignite the hot gas in the hot gas pipe 8 through the ignition nozzle 6 to produce high-temperature flames to heat the turbine disc 4 and the blades. The annular combustion chamber 3 is detachably connected with the annular sheet 9, which is set as a honeycomb shape and has a flow guiding effect, optimizing the hot gas flow and temperature distribution. The annular high-temperature flame is sprayed to the test blades, which simulates the real operating environment of the internal blades of the engine.

[0045] 3. Temperature and speed control:

[0046] Adjust the speed of the motor 1 and the hot gas supply of the hot gas pipe 8 to control the speed of the turbine disc 4 and the temperature in the combustion chamber 3 to simulate different working conditions.

[0047] 4. Cooling and exhaust:

[0048] Start the water pipe 5 for cooling, and at the same time, exhaust the waste gas generated by combustion through the exhaust passage 11.

[0049] 5. Data monitoring and analysis:

[0050] Monitor the speed of the turbine disc 4, the temperature of the combustion chamber 3 and other parameters through the electrical system and the measurement and control equipment, and collect and analyze the data.

[0051] 6. Test end and system shutdown:

[0052] After the test is completed, the motor 1 is turned off, the fuel supply is stopped, and the speed of the turbine disc 4 is gradually reduced until it completely stops.

[0053] 7. Maintenance and replacement:

[0054] Through the detachable and splicing structure of the combustion chamber 3, the maintenance and replacement of the turbine section are facilitated to adapt to the turbine blade test of different diameter requirements.

[0055] Through the above working principle and working process, the turbine blade test bench can provide a realistic test environment for the turbine blade, ensure the accuracy and reliability of the test data, and provide important support for the design and performance verification of the turbine blade.

[0056] It should be noted that in this paper, the terms include, contain or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. In this paper, specific examples are applied to the principle and implementation of the technical scheme of the utility model, and the above examples are only used to help understand the method and core idea of the utility model. The above is only the preferred embodiment of the utility model, it should be pointed out that due to the limited expression of the text, there are infinite specific structures objectively, for ordinary technical personnel in this technical field, without departing from the principle of the utility model, a number of improvements, refinements or changes can be made, and the above technical features can be combined in a proper way; these improvements, refinements, changes or combinations, or without improvement, the concept and technical scheme of the utility model are directly applied to other occasions, which should be regarded as the protection scope of the utility model.

Claims

1. A turbine blade test rig characterised in that, The utility model provides an engine, the output end of engine (1) is connected with gear box (2), the side end of gear box (2) is detachably connected with combustion chamber (3), the transmission shaft (10) is inserted in combustion chamber (3), the side end of transmission shaft (10) is provided with turbine disc (4), the side end of combustion chamber (3) is provided with hot gas pipe (8), and hot gas pipe (8) is communicated with combustion chamber (3) in, and hot gas pipe (8) is provided with igniter (6), and the other side of combustion chamber (3) is provided with water pipe (5) and exhaust passage (11).

2. A turbine blade test bed according to claim 1, wherein The both sides of combustion chamber (3) are provided with mounting parts (7), and are connected with gear box (2) through bolts.

3. A turbine blade test bed according to claim 1, wherein The combustion chamber (3) is provided as an annular structure, and the annular sheet (9) is detachably connected in the combustion chamber (3), and the annular sheet (9) is provided as a honeycomb shape.

4. A turbine blade test bed according to claim 1, wherein The combustion chamber (3) is provided as a splicing structure.

5. A turbine blade test bed according to claim 1, wherein The exhaust passage (11) is provided as a zigzag structure.

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