Gas turbine simulation test bench

Abstract

The present invention relates to a gas turbine modeling test bench, comprising a support platform, wherein one side of the upper surface of the support platform is connected to a motor via a support, an output end of the motor is connected to a speed sensor, one side of the speed sensor is connected to a load structure via a rotating shaft, one side of the load structure is connected to a rotor rotating structure via a rotating shaft, one side of the rotor rotating structure is connected to a vibration acceleration sensor via a rotating shaft, one side of the vibration acceleration sensor is connected to a torque sensor via a rotating shaft, and one side of the torque sensor is connected to a rotating support platform via a rotating shaft; blade cracks, blade root groove cracks, rotor eccentricity, and pull rod bolt loosening faults are simulated through a casing structure, a rotor structure, and a load structure of the rotor rotating structure, various fault simulations can be performed in a safe and controllable environment, reducing safety risks in actual operation, being able to simulate a variety of fault scenarios, and providing comprehensive fault data support.

Description

Technical Field

[0001] The invention relates to the technical field of gas turbine pull rod rotors, in particular to a gas turbine modeling test bench. Background Art

[0002] A gas turbine is an internal combustion power machine that uses continuously flowing gas as a working fluid to drive the impeller to rotate at high speed, converting the energy of the fuel into useful work. It is a rotating impeller heat engine.

[0003] The combustion chamber and turbine in a gas turbine not only have high operating temperatures, but also withstand thermal shock caused by drastic temperature changes during startup and shutdown of the gas turbine. The working conditions are harsh. The parts with the worst working conditions among these two major components are the flame tube and blades. Therefore, it is necessary to conduct simulation tests on the blades in the gas turbine to collect data on gas turbine failures. Traditional gas turbine fault diagnosis mostly relies on the collection and analysis of fault data during actual operation, or fault simulation through simple simulation devices. Direct testing on the gas turbine may cause serious damage and is costly. Failures in actual operation may lead to serious accidents. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the main purpose of the present invention is to provide a gas turbine model test bench.

[0005] The technical solution of the present invention is as follows: a gas turbine model test bench includes a support platform, one side of the upper surface of the support platform is connected to a motor via a support, the output end of the motor is connected to a speed sensor, one side of the speed sensor is connected to a load structure via a rotating shaft, one side of the load structure is connected to a rotor rotating structure via a rotating shaft, one side of the rotor rotating structure is connected to a vibration acceleration sensor via a rotating shaft, one side of the vibration acceleration sensor is connected to a torque sensor via a rotating shaft, and one side of the torque sensor is connected to a rotating support platform via a rotating shaft.

[0006] As a preferred embodiment, the rotor rotation structure includes a base, the upper surface of the base is provided with a transverse electromagnetic slide rail, the slider of the transverse electromagnetic slide rail is fixedly provided with an upper plate, the upper surface of the upper plate is fixedly provided with a longitudinal electromagnetic slide rail, the slider of the longitudinal electromagnetic slide rail is fixedly provided with a support frame, the support frame is fixed with a casing structure, a fixing frame is provided on one side of the base, and a supporting disc is provided on the fixing frame.

[0007] As a preferred embodiment, the casing structure includes an outer shell, a rotor structure is provided inside the outer shell, moving blades are fixed on the rotor structure, and stationary blades are fixed inside the outer shell.

[0008] As a preferred embodiment, the rotor structure includes a moving blade connecting seat, one side of the moving blade connecting seat is rotatably connected to the connecting seat, and the rotor structure is connected via a rotating shaft.

[0009] As a preferred embodiment, the load structure includes a load housing, the interior of the load housing is rotatably connected to a mass disk, and both sides of the mass disk are connected to a rotating shaft connecting column and a transmission shaft through bolt columns.

[0010] As a preferred embodiment, the housing is provided with a plurality of bolt holes, and connecting bolts are rotated in the bolt holes.

[0011] As a preferred embodiment, a plurality of threaded holes are provided on the mass disk, and the threaded holes are distributed in a circular shape on the mass disk.

[0012] Compared with the existing technology, the advantages and positive effects of the present invention are that, through the casing structure, rotor structure and load structure of the rotor rotating structure, blade cracks, blade root slot cracks, rotor eccentricity, and loose pull rod bolt failures are simulated, and various fault simulations can be performed in a safe and controllable environment, reducing the safety risks in actual operation. It can simulate multiple fault scenarios and provide comprehensive fault data support. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention provides a schematic diagram of the overall structure of a gas turbine model test bench;

[0014] Figure 2 A schematic diagram of the rotor rotation structure of a gas turbine model test bench is provided for the present invention;

[0015] Figure 3 A schematic diagram of the shell structure of a gas turbine model test bench is provided for the present invention;

[0016] Figure 4 The present invention provides a schematic structural diagram of the installation positions of the moving blades and stationary blades of a gas turbine model test bench;

[0017] Figure 5 A schematic diagram of the rotor structure of a gas turbine model test bench is provided for the present invention;

[0018] Figure 6 The present invention provides a schematic diagram of the load structure of a gas turbine model test bench.

[0019] Legend: 1. Support platform; 2. Motor; 3. Speed ​​sensor; 4. Load structure; 41. Load housing; 42. Mass disk; 43. Rotating shaft connecting column; 44. Drive shaft; 5. Rotor rotating structure; 51. Base; 52. Horizontal electromagnetic slide rail; 53. Upper plate; 54. Longitudinal electromagnetic slide rail; 55. Support frame; 56. Casing structure; 561. Housing; 562. Rotor structure; 5621. Moving blade connecting seat; 5622. Connecting seat; 563. Moving blade; 564. Stationary blade; 57. Fixed frame; 58. Support disk; 6. Vibration acceleration sensor; 7. Torque sensor; 8. Rotating support platform. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example

[0025] The gas turbine model test bench includes a support platform 1. One side of the upper surface of the support platform 1 is connected to a motor 2 via a support. The output end of the motor 2 is connected to a speed sensor 3. One side of the speed sensor 3 is connected to a load structure 4 via a rotating shaft. One side of the load structure 4 is connected to a rotor rotating structure 5 via a rotating shaft. One side of the rotor rotating structure 5 is connected to a vibration acceleration sensor 6 via a rotating shaft. One side of the vibration acceleration sensor 6 is connected to a torque sensor 7 via a rotating shaft. One side of the torque sensor 7 is connected to a rotating support platform 8 via a rotating shaft. By adding multiple bolts to the load structure 4, the centrifugal force generated during rotation is changed, thereby simulating an eccentricity experiment. The rotor rotating structure 5 is used to simulate a blade collision and wear experiment and a blade with a fault to complete the experimental data collection.

[0026] The rotor rotation structure 5 includes a base 51, and a transverse electromagnetic slide rail 52 is provided on the upper surface of the base 51. An upper plate 53 is fixed on the slider of the transverse electromagnetic slide rail 52, and a longitudinal electromagnetic slide rail 54 is fixed on the upper surface of the upper plate 53. A support frame 55 is fixed on the slider of the longitudinal electromagnetic slide rail 54, and a casing structure 56 is fixed on the support frame 55. A fixing frame 57 is provided on one side of the base 51, and a supporting disc 58 is provided on the fixing frame 57. The transverse electromagnetic slide rail 52 can be used to drive the outer shell 561 to move and conduct blade collision experiments. The longitudinal electromagnetic slide rail 54 drives the outer shell 561 to move and adjust the position of the outer shell 561 to facilitate the installation and replacement of blades. The support disc 58 is used to fix the rotor structure 562 inside the outer shell 561, and the rotor structure 562 is supported by the fixing frame 57.

[0027] The casing structure 56 includes an outer shell 561, a rotor structure 562 is provided inside the outer shell 561, moving blades 563 are fixed on the rotor structure 562, and stationary blades 564 are fixed inside the outer shell 561. The moving blades 563 are fixed to the rotor structure 562 by bolts, and the stationary blades 564 are fixed to the inside of the outer shell 561 by bolts. By adding gaskets of different thicknesses to the stationary blades 564, the position of the stationary blades 564 is made to protrude, and the protruding stationary blades 564 will collide with the rotor structure 562, thereby realizing a collision test.

[0028] The rotor structure 562 includes a moving blade connection seat 5621, one side of which is rotatably connected to the connection seat 5622. The rotor structure 562 is connected via a rotating shaft. The moving blade connection seat 5621 can rotate along with the rotating shaft, driving the moving blade 563 to rotate.

[0029] The load structure 4 includes a load shell 41, which is internally connected to a mass disk 42 for rotation. The two sides of the mass disk 42 are connected to the rotating shaft connecting column 43 and the transmission shaft 44 through bolt columns. By fixing bolts of different numbers and positions on the mass disk 42, an eccentricity experiment can be simulated and the data of the eccentricity experiment can be collected.

[0030] The outer shell 561 is provided with a plurality of bolt holes, and the connecting bolts are rotated in the bolt holes. By rotating the bolts into the bolt holes, the bolts pass through the bolt holes and enter the outer shell 561, so as to collide with the moving blades 563 and conduct the experiment; a plurality of threaded holes are provided on the mass disk 42, and the threaded holes are distributed in a circular shape on the mass disk 42, so that the center of gravity of the mass disk 42 increases with the increase of the bolts, and eccentric operation occurs during the rotation of the mass disk 42, thereby realizing the eccentricity experiment.

[0031] Working principle:

[0032] As shown in the figure,

[0033] 1. Rotor collision test: Add gaskets of different thicknesses to the stationary blades 564 to make the position of the stationary blades 564 protrude, start the motor 2, and drive the shaft to rotate. At this time, the protruding stationary blades 564 will collide with the rotor structure 562, simulating the stationary blade 564 collision test; add gaskets of different thicknesses under the moving blades 563 to make the position of the moving blades 563 protrude, start the motor 2, and drive the shaft to rotate. At this time, the protruding moving blades 563 will collide with the housing 561, simulating the moving blade 563 collision test; rotate the bolts into the housing 561 so that the bolts enter the interior of the housing 561, start the motor 2, and use the transverse electromagnetic slide rail 52 to drive the housing 561 to move, so that the moving blades 563 collide with the bolts, and perform a collision test;

[0034] 2. Bolt loosening test: By adjusting the tightness of the bolts on the shaft connecting column 43 and the transmission shaft 44, the fastening of the shaft is adjusted to different degrees, and data is collected through the vibration acceleration sensor 6 to implement the bolt loosening test.

[0035] 3. Rotor eccentricity test: Increase the number of bolts on the mass disk 42 and start the motor 2. As the shaft drives the mass disk 42 to rotate, the weight of the mass disk 42 acts on the rotor structure 562, achieving eccentricity. Eccentricity test data is collected.

[0036] 4. Blade crack test: Install a faulty blade on the moving blade connection seat 5621, collect fault information through the vibration acceleration sensor 6, speed sensor 3 and torque sensor 7, and complete the blade crack test.

[0037] Finally, it should be noted that the embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit them. 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 or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas turbine model test bench, comprising a support platform (1), characterized in that: One side of the upper surface of the support platform (1) is connected to a motor (2) via a support, the output end of the motor (2) is connected to a rotation speed sensor (3), one side of the rotation speed sensor (3) is connected to a load structure (4) via a rotating shaft, one side of the load structure (4) is connected to a rotor rotating structure (5) via a rotating shaft, one side of the rotor rotating structure (5) is connected to a vibration acceleration sensor (6) via a rotating shaft, one side of the vibration acceleration sensor (6) is connected to a torque sensor (7) via a rotating shaft, and one side of the torque sensor (7) is connected to a rotating support platform (8) via a rotating shaft.

2. The gas turbine model test bench according to claim 1, characterized in that: The rotor rotating structure (5) comprises a base (51), the upper surface of the base (51) is provided with a transverse electromagnetic slide rail (52), the slider of the transverse electromagnetic slide rail (52) is fixedly provided with an upper plate (53), the upper surface of the upper plate (53) is fixedly provided with a longitudinal electromagnetic slide rail (54), the slider of the longitudinal electromagnetic slide rail (54) is fixedly provided with a support frame (55), the support frame (55) is fixedly provided with a casing structure (56), and a fixing frame (57) is provided on one side of the base (51), and a supporting disc (58) is provided on the fixing frame (57).

3. The gas turbine model test bench according to claim 2, characterized in that: The casing structure (56) comprises an outer shell (561), a rotor structure (562) is arranged inside the outer shell (561), moving blades (563) are fixedly arranged on the rotor structure (562), and stationary blades (564) are fixedly arranged inside the outer shell (561).

4. The gas turbine model test bench according to claim 3, characterized in that: The rotor structure (562) comprises a moving blade connection seat (5621), one side of the moving blade connection seat (5621) is rotatably connected to the connection seat (5622), and the rotor structure (562) is connected via a rotating shaft.

5. The gas turbine model test bench according to claim 1, characterized in that: The load structure (4) comprises a load housing (41), the load housing (41) is rotatably connected to a mass disk (42) inside, and both sides of the mass disk (42) are connected to a rotating shaft connection column (43) and a transmission shaft (44) via bolt columns.

6. The gas turbine model test bench according to claim 3, characterized in that: The housing (561) is provided with a plurality of bolt holes, in which connecting bolts are rotated.

7. The gas turbine model test bench according to claim 5, characterized in that: A plurality of threaded holes are provided on the mass disk (42), and the threaded holes are distributed in a circular shape on the mass disk (42).

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