A multi-purpose blade machine test device with energy recovery

Abstract

The present invention belongs to the technical field of aero-engine test equipment, and discloses a multi-purpose blade machine test equipment with energy recovery, comprising an air bleed assembly, a main exhaust pipe, a pressure relief pipe, a pressure regulating pipe, an exhaust volute, a torque measuring flange, an electric dynamometer, an exhaust fan, a turbine generator, a mounting platform, a control cabinet, an inverter, and a radiator. The power output end of the turbine generator and the power output end of the electric dynamometer are both electrically connected to the input end of the inverter, the output end of the inverter is connected to the input end of the control cabinet, and the output end of the control cabinet is electrically connected to the power input end of the electric dynamometer and the power input end of the exhaust fan. The test equipment of the present invention takes into account both compressor testing and turbine testing through an integrated design, and has greater applicability. The electric dynamometer, the turbine generator, etc. are used to recover energy during the test process, thereby reducing energy consumption during the test process, being more energy-efficient, and having lower use costs.

Description

Technical Field

[0001] The invention belongs to the technical field of aviation engine test devices, and in particular relates to a multi-purpose blade machine test device with energy recovery. Background Art

[0002] In the aviation engine and ground-based gas turbine industries, bladed engines include compressors, which compress air using shaft power, and turbines, which expand air to generate power. In the aerodynamic design of these compressors and turbines, testers for their performance are often indispensable. Compressor testers typically require a high-power motor to drive the compressor, while turbine testers typically require a compressor unit and heater to provide a high-temperature, high-pressure air source. They also require a power-consuming device to consume the power generated by the turbine and control its speed.

[0003] The existing blade machine tester has the following problems:

[0004] 1. Existing blade machine testers cannot meet the requirements of turbine testing and compressor testing at the same time.

[0005] 2. Existing blade machine testers, whether the supporting motor of the compressor tester or the supporting compressor unit of the turbine tester, consume a lot of energy when in use. The high-pressure gas compressed by the compressor has a large work potential and is often wasted. At the same time, the work generated by the turbine expansion is also often wasted, and there is a lack of corresponding energy recovery means. Summary of the Invention

[0006] In response to the above problems, the present invention provides a multi-purpose blade machine testing device with energy recovery, which adopts the following technical solutions:

[0007] A multi-purpose bladed machine test device with energy recovery, comprising: an air bleed assembly, a main exhaust pipe, a pressure relief pipe, a pressure regulating pipe, an exhaust volute, a torque measuring flange, an electric dynamometer, an exhaust fan, an impeller generator, a mounting platform, a control cabinet, an inverter and a radiator;

[0008] The exhaust volute is fixedly arranged on one side of the mounting platform, the electric dynamometer is fixedly arranged on the other side of the mounting platform, the torsion flange is arranged between the exhaust volute and the electric dynamometer, one end of the torsion flange is connected to the output shaft of the electric dynamometer, and the other end is connected to the output shaft of the test piece through a coupling; the air bleed assembly is arranged on the side of the exhaust volute away from the torsion flange, the two ends of the main exhaust pipe are respectively connected to the exhaust volute and the air inlet of the radiator, the air outlet of the radiator is connected to the pressure relief pipe and the air inlet of the impeller generator; the pressure relief pipe is also connected to one end of the pressure regulating pipe and the air inlet of the exhaust fan;

[0009] The power output end of the impeller generator and the power output end of the electric dynamometer are both electrically connected to the input end of the inverter, the output end of the inverter is connected to the input end of the control cabinet, and the output end of the control cabinet is electrically connected to the power input end of the electric dynamometer and the power input end of the exhaust fan.

[0010] Furthermore, the air bleed assembly includes a nozzle flowmeter, an expansion section, a pressure stabilizing and rectifying section, and a contraction section that are connected in sequence.

[0011] Furthermore, the cross-sectional area of ​​the expansion section gradually increases along the direction of gas flow, and the cross-sectional area of ​​the contraction section gradually decreases along the direction of gas flow.

[0012] Furthermore, a heater is provided between the nozzle flow meter and the expansion section.

[0013] Furthermore, the output end of the control cabinet is also electrically connected to the power input end of the heater.

[0014] Furthermore, the air outlet of the radiator is connected to the air inlet of the impeller generator through a first connecting pipe, and a first regulating valve is provided on the first connecting pipe.

[0015] Furthermore, the air outlet of the radiator is communicated with the first end of the pressure relief pipe, and the second end of the pressure relief pipe is provided with a quick-opening and quick-closing valve.

[0016] Furthermore, the middle portion of the pressure relief pipe is connected to one end of the pressure regulating pipe, and the middle portion of the pressure relief pipe is connected to the air inlet of the exhaust fan through a second connecting pipe.

[0017] Furthermore, a second regulating valve is provided on the second connecting pipe.

[0018] Furthermore, a third regulating valve is provided on the pressure regulating pipeline.

[0019] Beneficial effects of the present invention:

[0020] The multi-purpose blade machine test device with energy recovery of the present invention takes into account both compressor testing and turbine testing through an integrated design, and has stronger applicability. It also uses an electric dynamometer, an impeller generator, etc. to recover energy during the test process, thereby reducing energy consumption during the test process, being more energy-efficient, and having lower usage costs.

[0021] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A structural schematic diagram of a multi-purpose blade machine testing device with energy recovery according to an embodiment of the present invention is shown.

[0024] In the figure: 1. Nozzle flowmeter; 2. Expansion section; 3. Voltage stabilizing and rectifying section; 4. Contraction section; 5. Main exhaust pipe; 6. Pressure relief pipe; 7. Pressure regulating pipe; 8. Second exhaust pipe; 9. First exhaust pipe; 10. Test piece; 11. Exhaust volute; 12. Torque measuring flange; 13. Electric dynamometer; 14. Exhaust fan; 15. Impeller generator; 16. Mounting platform; 17. Control cabinet; 18. Inverter; 19. Coupling; 20. Heater; 21. Radiator; 22. Quick opening and closing valve; 23. Third regulating valve; 24. Second regulating valve; 25. First regulating valve; 26. First connecting pipe; 27. Second connecting pipe. DETAILED DESCRIPTION

[0025] To make the objectives, 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 in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first", "second" etc. in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the application described herein. In this application, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "center", "vertical", "horizontal", "lateral", "longitudinal" etc. are based on the directions or positional relationships shown in the accompanying drawings.

[0027] The aerodynamic design of compressors and turbines requires performance testing using experimental equipment. Compressor testing often requires real-time control of the compressor's speed and compression ratio (the ratio of compressor outlet pressure to inlet pressure, greater than 1), as well as measurement of the compressor's intake flow and power consumption. This allows for real-time measurement of compressor performance parameters such as efficiency and capacity. Furthermore, compressed gas, due to its increased temperature and pressure, often exhibits a higher work capacity. Existing compressor testers lack energy recovery devices, preventing full utilization and resulting in significant waste.

[0028] Turbine testing requires real-time control of the turbine's speed and expansion ratio (the ratio of turbine inlet pressure to outlet pressure, greater than 1), as well as measurement of the turbine's intake air flow and output power. This allows for real-time measurement of turbine performance parameters such as efficiency and capacity. Furthermore, as the gas passes through the turbine, its temperature drops. To prevent freezing due to low turbine outlet temperatures, the gas at the turbine inlet often needs to be heated. In existing turbine testing processes, the power generated by the turbine is dissipated through other means, failing to fully utilize it, resulting in significant waste.

[0029] The present invention provides a multi-purpose blade machine test device with energy recovery, which can take into account the aerodynamic performance test requirements of the compressor and turbine. At the same time, the tester has its own energy feedback, which can recycle and reuse part of the test energy consumption, thereby reducing the energy consumption level of the entire test device during operation.

[0030] like Figure 1 As shown, a multi-purpose blade machine test device with energy recovery includes an air bleed assembly, a main exhaust pipe 5, a pressure relief pipe 6, a pressure regulating pipe 7, a first exhaust pipe 9, a second exhaust pipe 8, an exhaust volute 11, a torque measuring flange 12, an electric dynamometer 13, an exhaust fan 14, an impeller generator 15, a mounting platform 16, a control cabinet 17, an inverter 18 and a coupling 19.

[0031] Among them, the exhaust volute 11 is fixedly set on one side of the mounting platform 16, and the electric dynamometer 13 is fixedly set on the other side of the mounting platform 16. For example, the material of the mounting platform 16 can be cast iron. The exhaust volute 11 and the electric dynamometer 13 are installed on the same mounting platform 16 to ensure the overall rigidity of the test device.

[0032] The torsion measuring flange 12 is arranged between the exhaust volute 11 and the electric dynamometer 13, one end of the torsion measuring flange 12 is connected to the output shaft of the electric dynamometer 13, the air bleed assembly is arranged on the side of the exhaust volute 11 away from the torsion measuring flange 12, and the test piece 10 is located between the air bleed assembly and the exhaust volute 11.

[0033] During the experiment, the other end of the torsion measuring flange 12 is connected to the output shaft of the test piece 10 through the coupling 19, and the test piece 10 is detachably connected to the side of the exhaust volute 11 away from the torsion measuring flange 12, for example, the test piece 10 and the exhaust volute 11 are connected through a flange.

[0034] During the experiment, the air outlet of the air bleed assembly is connected to the air inlet of the test piece 10. The air bleed assembly is used to introduce gas into the test piece 10, measure the gas flow rate, and heat the gas when the test piece 10 is running.

[0035] For example, the air bleed assembly includes a nozzle flowmeter 1, an expansion section 2, a pressure stabilizing and rectifying section 3, and a contraction section 4 connected in sequence. A heater 20 is also provided between the nozzle flowmeter 1 and the expansion section 2. The gas enters from the nozzle flowmeter 1, passes through the expansion section 2, the pressure stabilizing and rectifying section 3, and the contraction section 4 in sequence, and then enters the air inlet of the test piece 10.

[0036] The cross-sectional area of ​​the expansion section 2 gradually increases along the direction of gas flow, and the cross-sectional area of ​​the contraction section 4 gradually decreases along the direction of gas flow.

[0037] When conducting turbine tests, air is drawn in through the bleed assembly to achieve better uniformity of the turbine inlet flow field.

[0038] Both ends of the main exhaust pipe 5 are respectively communicated with the exhaust volute 11 and the air inlet of the radiator 21 , and the air outlet of the radiator 21 is communicated with the pressure relief pipe 6 and the air inlet of the impeller generator 15 .

[0039] For example, the air outlet of the radiator 21 is connected to the air inlet of the impeller generator 15 through the first connecting pipe 26 , the first regulating valve 25 is provided on the first connecting pipe 26 , and the exhaust port of the impeller generator 15 is connected to one end of the first exhaust pipe 9 .

[0040] The air outlet of the radiator 21 is connected to the first end of the pressure relief pipe 6, and the second end of the pressure relief pipe 6 is provided with a quick opening and closing valve 22. The pressure relief pipe 6 is also connected to one end of the pressure regulating pipe 7 and the air inlet of the exhaust fan 14.

[0041] For example, the middle part of the pressure relief pipe 6 is connected to one end of the pressure regulating pipe 7, the middle part of the pressure relief pipe 6 is connected to the air inlet of the exhaust fan 14 through the second connecting pipe 27, and the air outlet of the exhaust fan 14 is connected to one end of the second exhaust pipe 8.

[0042] For example, the second connecting pipe 27 is provided with a second regulating valve 24 , and the pressure regulating pipe 7 is provided with a third regulating valve 23 .

[0043] The power output end of the impeller generator 15 is electrically connected to the input end of the inverter 18 through a cable. The output end of the inverter 18 is connected to the input end of the control cabinet 17. The output end of the control cabinet 17 is electrically connected to the power input end of the electric dynamometer 13.

[0044] The power output end of the electric dynamometer 13 is electrically connected to the input end of the inverter 18 , and the output end of the control cabinet 17 is also electrically connected to the power input end of the heater 20 and the power input end of the exhaust fan 14 .

[0045] When conducting compressor tests using the test apparatus of the present invention, second connecting pipe 27 is closed (second regulating valve 24 is fully closed), first connecting pipe 26 is open (first regulating valve 25 is open), and quick-open / quick-close valve 22 at the second end of pressure relief pipe 6 is fully closed, preventing gas from passing through exhaust fan 14 and pressure relief pipe 6. The electric dynamometer 13 is in power source mode, acting as a motor. It consumes electrical energy to drive test piece 10 to perform work on the airflow, allowing the bleed air assembly to draw air from the atmosphere. The air then passes through the bleed air assembly's nozzle flowmeter 1, expansion section 2, pressure stabilizing and rectifying section 3, and contraction section 4 before entering test piece 10.

[0046] After being compressed by the test piece 10, the gas is collected in the exhaust volute 11 and then flows through the main exhaust pipe 5 to the radiator 21. The radiator 21 cools the gas, which has increased in temperature due to compression. The gas then enters the impeller generator 15 through the first connecting pipe 26, drives the impeller generator 15 to generate electricity, and is then discharged through the first exhaust pipe 9. During this process, the electricity generated by the impeller generator 15 can be transmitted to the inverter 18 via internal cables. The inverter 18 regulates and rectifies the current and transmits the electrical energy to the electric dynamometer 13 through the control cabinet 17, thereby saving energy consumption of the electric dynamometer 13.

[0047] During the test, the input power of the test piece 10 can be measured through the torsion measuring flange 12, the intake flow rate of the test piece 10 can be measured through the nozzle flowmeter 1, and the rotation speed of the test piece 10 can be controlled by adjusting the rotation speed of the electric dynamometer 13. By adjusting the opening of the first regulating valve 25 and the third regulating valve 23, the flow rate of the gas flowing through the pressure regulating pipe 7 and the first exhaust pipe 9 is controlled to adjust the outlet pressure of the test piece 10, thereby controlling the compression ratio of the test piece 10.

[0048] When the test piece 10 needs emergency shutdown due to surge or other accidents, the quick opening and closing valve 22 can be quickly opened to discharge excess gas through the pressure relief pipe 6, quickly reducing the outlet pressure of the test piece 10, and at the same time stopping the speed of the electric dynamometer 13, so that the speed of the test piece 10 can be quickly reduced.

[0049] When conducting a turbine test using the test apparatus of the present invention, the second connecting pipe 27 is open (second regulating valve 24 is open), the first connecting pipe 26 is closed (first regulating valve 25 is fully closed), and the exhaust fan 14 is activated, causing gas to be drawn from the bleed assembly into the tester. After passing through the nozzle flowmeter 1 and being heated by the heater 20, the gas then passes through the expansion section 2, the voltage-stabilizing and rectifying section 3, and the contraction section 4 and enters the test piece 10. After the gas expands and performs work, it is collected in the exhaust volute 11 and then flows through the main exhaust pipe 5 to the radiator 21, where the temperature of the gas, which has been raised by the heater 20, is reduced. The gas then passes through the second regulating valve 24 and the exhaust fan 14 before being discharged from the second exhaust pipe 8.

[0050] During this process, the electric dynamometer 13 is in a load state, that is, it is used as a motor. The test piece 10 drives the electric dynamometer 13 to generate electricity. The generated electricity can be transmitted to the inverter 18 through internal cables. The inverter 18 regulates and rectifies the current and then transmits the electric energy to the exhaust fan 14 through the control cabinet 17 for use, thereby saving energy consumption of the exhaust fan 14.

[0051] During the test, the input power of the test piece 10 can be measured through the torsion measuring flange 12, the intake flow rate of the test piece 10 can be measured through the nozzle flowmeter 1, and the rotation speed of the test piece 10 can be controlled by adjusting the rotation speed of the electric dynamometer 13. By adjusting the opening of the second regulating valve 24 and the third regulating valve 23, the flow rate of the gas flowing into the tester through the pressure regulating pipe 7 is controlled, thereby changing the ratio of the gas passing through the test piece 10 to the gas discharged through the second exhaust pipe 8, thereby adjusting the outlet pressure of the test piece 10 and controlling the expansion ratio of the test piece 10.

[0052] When the test piece 10 needs to be stopped urgently due to an accident such as vibration, the quick opening and closing valve 22 can be quickly opened to increase the outlet pressure of the test piece 10, thereby reducing its expansion ratio. At the same time, the exhaust fan 14 is turned off to cut off the power source, so that the rotation speed of the test piece 10 can be quickly reduced.

[0053] The multi-purpose blade machine test device with energy recovery of the present invention takes into account both compressor testing and turbine testing through integrated design, and has stronger applicability. It also uses an electric dynamometer 13, an impeller generator 15, etc. to recover energy during the test process, thereby reducing energy consumption during the test process, being more energy-efficient, and having lower usage costs.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-purpose blade machine test device with energy recovery, characterized in that: include: Bleed air assembly, main exhaust pipe, pressure relief pipe, pressure regulating pipe, exhaust volute, torque measuring flange, electric dynamometer, exhaust fan, impeller generator, mounting platform, control cabinet, inverter and radiator; The exhaust volute is fixedly arranged on one side of the mounting platform, the electric dynamometer is fixedly arranged on the other side of the mounting platform, the torsion flange is arranged between the exhaust volute and the electric dynamometer, one end of the torsion flange is connected to the output shaft of the electric dynamometer, and the other end is connected to the output shaft of the test piece through a coupling; the air bleed assembly is arranged on the side of the exhaust volute away from the torsion flange, the two ends of the main exhaust pipe are respectively connected to the exhaust volute and the air inlet of the radiator, the air outlet of the radiator is connected to the pressure relief pipe and the air inlet of the impeller generator; the pressure relief pipe is also connected to one end of the pressure regulating pipe and the air inlet of the exhaust fan; The power output end of the impeller generator and the power output end of the electric dynamometer are both electrically connected to the input end of the inverter, the output end of the inverter is connected to the input end of the control cabinet, and the output end of the control cabinet is electrically connected to the power input end of the electric dynamometer and the power input end of the exhaust fan.

2. The multi-purpose blade machine test device with energy recovery according to claim 1, characterized in that: The air bleed assembly comprises a nozzle flow meter, an expansion section, a pressure stabilizing and rectifying section and a contraction section which are connected in sequence.

3. The multi-purpose blade machine test device with energy recovery according to claim 2, characterized in that: The cross-sectional area of ​​the expansion section gradually increases along the direction of gas flow, and the cross-sectional area of ​​the contraction section gradually decreases along the direction of gas flow.

4. The multi-purpose blade machine test device with energy recovery according to claim 2, characterized in that: A heater is also provided between the nozzle flow meter and the expansion section.

5. The multi-purpose blade machine test device with energy recovery according to claim 4, characterized in that: The output end of the control cabinet is also electrically connected to the power input end of the heater.

6. The multi-purpose blade machine testing device with energy recovery according to any one of claims 1 to 5, characterized in that: The air outlet of the radiator is communicated with the air inlet of the impeller generator through a first connecting pipe, and a first regulating valve is provided on the first connecting pipe.

7. The multi-purpose blade machine testing device with energy recovery according to any one of claims 1 to 5, characterized in that: The air outlet of the radiator is communicated with the first end of the pressure relief pipe, and the second end of the pressure relief pipe is provided with a quick-opening and quick-closing valve.

8. The multi-purpose blade machine test device with energy recovery according to claim 1, characterized in that: The middle portion of the pressure relief pipe is communicated with one end of the pressure regulating pipe, and the middle portion of the pressure relief pipe is communicated with the air inlet of the exhaust fan through a second connecting pipe.

9. The multi-purpose blade machine test device with energy recovery according to claim 8, characterized in that: The second connecting pipe is provided with a second regulating valve.

10. The multi-purpose blade machine testing device with energy recovery according to any one of claims 1 to 5, characterized in that: A third regulating valve is provided on the pressure regulating pipeline.

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