A bidirectional output gas turbine test bench

Abstract

The present application belongs to the technical field of test design of bidirectional output gas turbines, and specifically relates to a bidirectional output gas turbine test bench, which can design a power absorption device, an intake and exhaust system, and a mounting structure, so that the power absorption device has a compensation function for the axial and radial displacements of the rotor and stator components, the intake and exhaust system has a compensation function for the axial and radial displacements of the rotor and stator components, and the mounting structure can reliably install and adjust the rotating equipment, thereby meeting the test requirements of the bidirectional output gas turbine.

Description

Technical Field

[0001] The present application belongs to the technical field of bidirectional output gas turbine test design, and specifically relates to a bidirectional output gas turbine test bench. Background Art

[0002] The performance debugging and long-term reliability test of the gas turbine are completed on the test bench, which includes the corresponding mounting structure, power absorption device and intake and exhaust system. Among them, the mounting structure is used to position and install the gas turbine; the power absorption device is used to absorb the output power of the gas turbine, consume the output power of the gas turbine, and simulate the output environment of the gas turbine; the intake and exhaust system is used to provide high-quality intake air for the gas turbine and create an exhaust environment to ensure the performance of the gas turbine.

[0003] Bidirectional output gas turbines are capable of both bidirectional simultaneous output and unidirectional independent output according to requirements. Currently, most test benches are designed for unidirectional output gas turbines and are used for performance commissioning and long-term reliability testing of bidirectional output gas turbines. However, these test benches have the following defects:

[0004] 1) There are relatively few rotating equipment involved, and there is a lack of reliable installation and adjustment methods for bidirectional output gas turbine testing;

[0005] 2) The power absorption device is of a single type and does not have the function of compensating for the axial and radial displacement of the rotor and stator components, which cannot meet the test requirements of a bidirectional output gas turbine;

[0006] 3) The intake and exhaust system has a simple structure and does not have the function of compensating for the axial and radial displacement of the rotor and stator components, and cannot meet the test requirements of a bidirectional output gas turbine.

[0007] This application is proposed in view of the above-mentioned technical defects.

[0008] It should be noted that the disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of this application, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this application, the above background technology should not be used to evaluate the novelty and creativity of this application. Summary of the Invention

[0009] The purpose of the present application is to provide a bidirectional output gas turbine test bench to overcome or alleviate at least one of the existing technical deficiencies.

[0010] The technical solution of this application is:

[0011] A bidirectional output gas turbine test bench, comprising:

[0012] a hydraulic dynamometer connected to the front output shaft of the gas turbine through a coupling;

[0013] a torque measuring instrument connected to the rear output shaft of the gas turbine via a coupling;

[0014] Gearbox, connected to the torque measuring instrument through a coupling;

[0015] Generator, connected to the gearbox through a coupling and connected to the load bank;

[0016] in,

[0017] The coupling connecting the front output shaft of the gas turbine and the hydraulic dynamometer, as well as the coupling connecting the rear output shaft of the gas turbine and the torque measuring instrument, include:

[0018] High power absorbing connecting shaft;

[0019] Two multi-stage membrane discs, one end of which has a transfer tube on the inner side, and the two transfer tubes are connected to the two ends of the high-power absorption connection shaft; the outer sides of the two multi-stage grinding discs have an annular connecting edge;

[0020] Two support cylinders, one end of which extends into the adapter cylinders on the two multi-stage membrane discs and fits in with the corresponding adapter cylinders with a small gap. The side walls are connected to the inner sides of the two multi-stage membrane discs, and the outer walls of the other ends have an annular support edge; the two annular support edges are located outside the two annular connecting edges;

[0021] An annular connecting edge and an annular supporting edge are connected to a flange provided on a front output shaft or a rear output shaft of the gas turbine through bolts;

[0022] The other annular connecting edge and the annular supporting edge are connected to a flange provided on the input shaft of the hydraulic dynamometer or the input shaft of the torque measuring instrument through bolts;

[0023] Couplings connecting the torque meter and gearbox, as well as couplings connecting the gearbox and generator, including:

[0024] Low power absorption connecting shaft;

[0025] Two adapter cylinders, one end of which is butted against both ends of the low-power absorption connecting shaft, and the outer wall of the other end has an annular adapter edge;

[0026] Two diaphragm groups are arranged outside the two annular transition edges;

[0027] An annular transfer edge and a diaphragm assembly are connected to a flange set on the output shaft of a torque measuring instrument or a gearbox output shaft through bolts, and the bolts therein are fitted with a small clearance between the bolt holes on the annular transfer edge;

[0028] The other annular transition edge and the diaphragm group are connected to the gearbox input shaft or the flange set on the generator through bolts, and the bolts therein are matched with the bolt holes on the annular transition edge with a small gap.

[0029] According to at least one embodiment of the present application, the above-mentioned bidirectional output gas turbine test bench further includes:

[0030] The air intake volute is sleeved on the outer periphery of the coupling connecting the front output shaft of the gas turbine and the hydraulic dynamometer, and its outlet is connected to the gas turbine inlet by bolts through an annular canvas;

[0031] The air intake spool is sleeved on the outer periphery of the coupling connected to the front output shaft of the gas turbine and the hydraulic dynamometer, and is located inside the spool casing. One end of the spool casing is connected to the inner wall of the spool casing, and the other end is overlapped with the front end of the shaft protection sleeve connected to the front output shaft of the gas turbine.

[0032] The intake pipe is L-shaped as a whole, with a rectangular cross section and a trumpet-shaped inlet. The axis of the inlet end is parallel to the axis of the gas turbine, and the outlet is connected to the inlet of the intake volute;

[0033] A honeycomb rectifier is provided in the outlet end of the air inlet pipe;

[0034] Two fine-pore rectifier nets with guide frames are set inside the outlet end of the intake pipe and located downstream of the honeycomb rectifier;

[0035] Multi-channel grille deflectors are set in the curved part of the intake duct;

[0036] The exhaust guide elbow is sleeved on the outer periphery of the rear output shaft of the gas turbine, with its inlet connected to the gas turbine outlet and its outlet axis parallel to the outlet axis of the intake pipe;

[0037] The exhaust pipe has a straight section at the front end of the inlet and an expansion section at the rear end. The straight section is sleeved on the outer periphery of the exhaust guide elbow outlet end and fits in with a small gap between the outlet end of the exhaust guide elbow and the exhaust guide elbow.

[0038] It is equipped with an injection cooling device or a high-pressure water spray device;

[0039] Fixed fulcrum, fixed support on the outside of the middle part of the exhaust pipe;

[0040] A sliding fulcrum, slidingly supported on the outside of the exhaust pipe outlet end;

[0041] The small hole silencer is installed inside the outlet end of the exhaust pipe.

[0042] According to at least one embodiment of the present application, in the above-mentioned bidirectional output gas turbine test bench, the hydraulic dynamometer, the torque meter, the gearbox, and the generator are rotating equipment;

[0043] The dual-output gas turbine test bench also includes:

[0044] Multiple mounting bases are connected to various rotating devices through bolts, and the bolt holes on each rotating device are fitted with a small gap between the bolts;

[0045] Multiple sets of three-way adjustment mechanisms are connected to each mounting base, and each three-way adjustment mechanism includes:

[0046] The vertical adjustment screw is screwed on the mounting base and rests on the rotating device. The vertical height of the rotating device can be adjusted by rotating it.

[0047] A transversely adjustable support plate is connected to the mounting base;

[0048] The lateral adjustment screw is screwed on the lateral adjustment support plate and rests on the rotating device, and can adjust the lateral position of the rotating device by rotating;

[0049] An axial adjustment support plate is connected to the mounting base;

[0050] The axial adjustment screw is screwed on the axial adjustment support plate and rests on the rotating device. The axial position of the rotating device can be adjusted by rotating it.

[0051] This application has at least the following beneficial technical effects:

[0052] A bidirectional output gas turbine test bench is provided. The test bench can design a power absorption device, an intake and exhaust system, and a mounting structure, so that the power absorption device has a compensation function for the axial and radial displacements of the rotor and stator components, the intake and exhaust system has a compensation function for the axial and radial displacements of the rotor and stator components, and the mounting structure can reliably install and adjust the rotating equipment, thereby well meeting the test requirements of the bidirectional output gas turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 Schematic diagram of a power absorption device for a two-way output gas turbine test bench provided in an embodiment of the present application;

[0054] Figure 2 Schematic diagram of a multi-stage grinding disc coupling provided in an embodiment of the present application;

[0055] Figure 3 Schematic diagram of a diaphragm group coupling provided in an embodiment of the present application;

[0056] Figure 4 Schematic diagram of the intake and exhaust system of a two-way output gas turbine test bench provided in an embodiment of the present application;

[0057] Figure 5 This is a schematic diagram of the connection between the intake volute and the gas turbine provided in an embodiment of the present application;

[0058] Figure 6 is a schematic diagram of the installation structure of a two-way output gas turbine test bench provided in an embodiment of the present application;

[0059] in:

[0060] 1-Hydraulic dynamometer; 2-Gas turbine; 3-Torque meter; 4-Gearbox; 5-Generator; 6-High power absorption connecting shaft; 7-Multi-stage diaphragm disc; 8-Support cylinder; 9-Low power absorption connecting shaft; 10-Adapter cylinder; 11-Diaphragm group; 12-Intake rectifier volute; 13-Annular canvas; 14-Intake rectifier cylinder; 15-Intake pipe; 16-Honeycomb rectifier; 17-Fine-pore rectifier mesh; 18-Grill guide plate; 19-Exhaust guide elbow; 20-Exhaust pipe; 21-Fixed fulcrum; 22-Sliding fulcrum; 23-Small hole silencer; 24-Mounting base; 25-Vertical adjustment screw; 26-Horizontal adjustment support plate; 27-Horizontal adjustment screw; 28-Axial adjustment support plate; 29-Axial adjustment screw; 30-Rotating equipment.

[0061] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and should not be understood as limitations on this patent. DETAILED DESCRIPTION

[0062] To make the technical solution and its advantages of the present application clearer, the technical solution of the present application will be described in further detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present application and are only used to explain the present application, not to limit the present application. It should be noted that, for ease of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0063] In addition, unless otherwise defined, the technical or scientific terms used in the description of this application should have the ordinary meanings understood by those of ordinary skill in the art to which this application belongs. The words "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer" used in the description of this application are only used to indicate relative directions or positional relationships, and do not imply that the device or component must have a specific orientation, be constructed, or operate in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. Therefore, they should not be understood as limitations on this application. The words "first," "second," "third," and similar terms used in the description of this application are used only for descriptive purposes to distinguish different components and should not be understood to indicate or imply relative importance. The words "one," "an," or "the" used in the description of this application should not be understood as absolute limitations on quantity, but should be understood as meaning the presence of at least one. The words "include" or "comprises" used in the description of this application mean that the element or object listed before the word includes the elements or objects listed after the word and their equivalents, but does not exclude other elements or objects.

[0064] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the words "install", "connect", "connect" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0065] The following is combined with Figures 1 to 6 This application is described in further detail.

[0066] Taking into account the use environment simulation requirements of different output modes of the bidirectional output gas turbine, the load mode of the bidirectional output gas turbine test bench in this application is determined to be the front output hydraulic dynamometer load + the rear output generator load, and the power absorption device is designed to meet the test requirements of the bidirectional output gas turbine in both bidirectional simultaneous output and unidirectional single output. Figure 1 shown.

[0067] The power absorption device of the bidirectional output gas turbine test bench of the present application includes:

[0068] The hydraulic dynamometer 1 is connected to the front output shaft of the gas turbine 2 via a coupling;

[0069] The torque measuring instrument 3 is connected to the rear output shaft of the gas turbine 2 via a coupling;

[0070] The gearbox 4 is connected to the torque measuring instrument 3 via a coupling;

[0071] The generator 5 is connected to the gear box 4 through a coupling and is also connected to the load box.

[0072] The present application provides a power absorption device for a bidirectional output gas turbine test bench, which uses the gas turbine 2 as the motive force, and distributes the torque output by the front and rear output shafts to the hydraulic dynamometer 1 and the generator 5 to achieve torque balance and power consumption.

[0073] The present application provides a power absorption device for a bidirectional output gas turbine test bench. The front output shaft of the gas turbine 2 outputs power to a hydraulic dynamometer 1, which drives the rotor of the hydraulic dynamometer 2 to rotate. The friction torque generated by the rotation of water is used to absorb the power output by the front output shaft of the gas turbine 2, thereby achieving torque balance. The power output by the front output shaft of the gas turbine 2 is converted into heat energy, which is consumed through the circulation of the water medium. Using the hydraulic dynamometer 1 as the power absorption device for the front output shaft of the gas turbine 2 has the following advantages:

[0074] The hydraulic dynamometer 1 is suitable for serving as a load for a mechanical propulsion gas turbine;

[0075] The hydraulic dynamometer 1 is small in size, light in weight, has few auxiliary systems, and is relatively flexible in use;

[0076] The hydraulic dynamometer 1 is more accurate in maneuverability tests simulating ship operating conditions;

[0077] The hydraulic dynamometer 1 can adapt to the open-loop control of the gas turbine, as well as closed-loop control modes such as speed closed-loop and torque closed-loop.

[0078] The present application provides a power absorption device for a bidirectional output gas turbine test bench. The power output from the rear output shaft of the gas turbine 2 is transmitted to the generator 4 via a torque meter 3 and a reduction gearbox 4. The generator 4 converts mechanical energy into electrical energy through electromagnetic induction. The electrical energy is directly converted into heat energy for consumption via a load resistor in a load box, specifically by air cooling. The torque meter 3 and the reduction gearbox 4 are added between the gas turbine 2 and the generator 5. The speed and torque of the generator 5 and the gas turbine 2 can be matched and accurately measured. Using the generator 4 as the power absorption device for the front output shaft of the gas turbine 2 has the following advantages:

[0079] The generator 4 is suitable for use as a power absorption device for an electric propulsion gas turbine and can simulate the conditions of power generation use;

[0080] For gas turbines used as all-electric propulsion power plants for ships, generator 4 can more accurately simulate special tests such as power surges, surges, and load rejection required for ship use;

[0081] The generator 4 has a long service life and is more suitable for long-term operation assessment tests of gas turbines;

[0082] An interface for connecting to the power grid can be reserved, and the electricity generated during the continuous operation assessment can be connected to the grid for power generation, thus avoiding energy waste.

[0083] A bidirectional, highly compensated, and ultra-long shaft system is designed to connect the gas turbine and all rotating equipment in series, transmitting power and torque while absorbing the axial displacement of each rotor.

[0084] When the gas turbine 2 and various equipment are in operation, the rotor and stator are subjected to different degrees of axial and radial displacement. The bidirectional output gas turbine test bench has an extra-long shaft system, and displacement compensation can be performed through the design of the coupling to prevent damage to the power absorption device.

[0085] The present application provides a power absorption device for a two-way output gas turbine test bench, wherein the coupling connecting the front output shaft of the gas turbine 2 and the hydraulic dynamometer 1, and the coupling connecting the rear output shaft of the gas turbine 2 and the torque meter 3 have high displacement compensation requirements and can be designed as follows: Figure 2 As shown, including:

[0086] The high power absorption connecting shaft 6 can be designed as a hollow structure;

[0087] Two multi-stage membrane discs 7 are wavy in shape, with a transfer tube on the inner side of one end. The two transfer tubes are connected to the two ends of the high-power absorption connecting shaft 6; the outer sides of the two multi-stage grinding discs 7 are provided with an annular connecting edge;

[0088] Two support tubes 8, one end of which extends into the adapter tubes on the two multi-stage membrane discs 7, and fits with the corresponding adapter tubes with a small gap. The side wall is connected to the inner side of the two multi-stage membrane discs 7, and the outer wall of the other end has an annular support edge; the two annular support edges are located outside the two annular connecting edges;

[0089] An annular connecting edge and an annular supporting edge are connected to a flange provided on a front output shaft or a rear output shaft of the gas turbine 2 through bolts;

[0090] The other annular connecting edge and the annular supporting edge are connected to a flange provided on the input shaft of the hydraulic dynamometer 1 or the input shaft of the torque measuring instrument 3 through bolts.

[0091] The above coupling design can utilize the radial and axial deformations of the multi-stage diaphragm disc 7 to perform high displacement compensation, and is supported by the support tube 8.

[0092] In the power absorption device of the bidirectional output gas turbine test bench provided in this application, the displacement compensation of the coupling connecting the torque meter 3 and the gear box 4, and the coupling connecting the gear box 4 and the generator 5 are relatively low, and can be designed as follows: Figure 3 As shown, including:

[0093] The low power absorption connecting shaft 9 can be designed as a hollow structure;

[0094] Two adapter cylinders 10, one end of which is butted against both ends of the low-power absorption connecting shaft 9, and the outer wall of the other end has an annular adapter edge;

[0095] Two diaphragm groups 11 are arranged outside the two annular transition edges;

[0096] An annular transition edge and a diaphragm assembly 11 are connected to a flange provided on the output shaft of the torque measuring instrument 3 or the output shaft of the gear box 4 by bolts, wherein the bolts are fitted with a small clearance between the bolt holes on the annular transition edge;

[0097] The other annular transition edge and the diaphragm group 11 are connected to the input shaft of the gearbox 4 or the flange provided on the generator 5 through bolts, and the bolts therein are matched with the bolt holes on the annular transition edge with a small clearance.

[0098] The above coupling design can utilize the axial deformation of the diaphragm group 11 and the radial sliding of the annular transition edge and its transition cylinder 10 and the low-power absorption connecting shaft 9 to perform small-scale displacement compensation.

[0099] The bidirectional output gas turbine has high requirements on the intake quality, intake loss, exhaust loss and other aspects of the test bench, and needs to have a displacement compensation function. At the same time, the intake and exhaust cannot adopt an axial structure, and can only adopt a lateral intake and exhaust structure. Based on this, this application provides an intake and exhaust system for a bidirectional output gas turbine test bench, which is designed as follows Figure 4 shown.

[0100] This application provides an intake system in the intake and exhaust system of a two-way output gas turbine test bench, including:

[0101] The air intake volute 12 is sleeved on the outer periphery of the coupling connecting the front output shaft of the gas turbine 2 and the hydraulic dynamometer 1, and its outlet is connected to the inlet of the gas turbine 2 by bolts through an annular canvas 13;

[0102] The air intake spool 14 is sleeved around the outer periphery of the coupling connecting the front output shaft of the gas turbine 2 and the hydraulic dynamometer 1, and is located inside the spool 12. One end of the spool 14 is connected to the inner wall of the spool 12, and the other end is overlapped with the front end of the shaft protection sleeve connected to the front output shaft of the gas turbine 2.

[0103] The air inlet pipe 15 is L-shaped as a whole, with a rectangular cross section and a trumpet-shaped inlet. The axis of the inlet end is parallel to the axis of the gas turbine 2, and the outlet is connected to the inlet of the air intake volute 12;

[0104] A honeycomb rectifier 16 is provided in the outlet end of the air inlet pipe 15;

[0105] Two fine-pore rectifier nets 17 with flow-guiding frames are provided in the outlet end of the air inlet pipe 15 and are located downstream of the honeycomb rectifier 16;

[0106] A multi-channel grille guide plate 18 is provided in the curved portion of the air intake pipe 15;

[0107] In the above-mentioned air intake system, an L-shaped air intake pipe 15 is designed to supply air to the gas turbine 2 from the side. The cross-section of the air intake pipe 15 is designed to be rectangular, which is convenient for installation. By optimizing the cross-sectional size, the air flow velocity in the working state can be made lower than 10 m / s, thereby reducing the flow velocity and reducing losses.

[0108] In the above-mentioned intake system, multiple grid guide plates 18 are set in the curved part of the intake pipe 15. The grid guide plates 18 are arranged with honeycomb rectifiers 16 and fine-pore rectifier meshes 17 to ensure that the intake quality meets the intake requirements of the gas turbine 2.

[0109] In the above-mentioned intake system, the intake volute 12 and the gas turbine 2 are designed to adopt a canvas soft connection + overlap installation structure, such as Figure 5 As shown, it can absorb displacement within 10mm and perform displacement compensation.

[0110] This application provides an exhaust system in the intake and exhaust system of a two-way output gas turbine test bench, including:

[0111] The exhaust guide elbow 19 is sleeved on the outer periphery of the rear output shaft of the gas turbine 2, with its inlet connected to the outlet of the gas turbine 2 and its outlet axis parallel to the outlet axis of the intake pipe 15;

[0112] The exhaust pipe 20 has a straight section at the front end of the inlet and an expanded section at the rear end. The straight section is sleeved around the outer periphery of the outlet end of the exhaust guide bend 19, with a small gap between the straight section and the outlet end of the exhaust guide bend 19. A jet cooling or high-pressure water spraying device is installed inside the straight section.

[0113] The fixed support point 21 is fixedly supported on the outside of the middle part of the exhaust pipe 20;

[0114] A sliding fulcrum 22 is slidably supported on the outside of the outlet end of the exhaust pipe 20;

[0115] The small hole silencer 23 is provided in the outlet end of the exhaust pipe 20 .

[0116] In the exhaust system disclosed above, an exhaust gas guide elbow 19 is designed to be provided after the gas turbine 2. The diameter of the exhaust gas guide elbow 19 is gradually expanded to reduce exhaust gas loss.

[0117] In the exhaust system disclosed above, displacement compensation is designed through a fixed fulcrum + sliding fulcrum and a plug-in structure, which can prevent the exhaust guide bend 19 and the exhaust pipe 20 from being thermally displaced at high temperatures and causing structural damage.

[0118] In the exhaust system disclosed above, an ejection cooling or high-pressure water spraying device is designed to be set in the straight section in front of the inlet end of the exhaust pipe 20 to cool the exhaust gas, thereby reducing the exhaust temperature and reducing heat radiation to the nearby space.

[0119] In the exhaust system disclosed above, a small hole silencer 23 is designed to be provided in the outlet end of the exhaust pipe 20 to reduce exhaust noise, and the opening area can be designed to be 3 times the exhaust cross-sectional area to effectively reduce exhaust noise.

[0120] The present application provides a two-way output gas turbine test bench, wherein the hydraulic dynamometer 1, the torque meter 3, the gearbox 4, and the generator 5 are rotating devices 30, which are relatively large in number. For this purpose, an installation structure is designed, specifically as follows: Figure 6 As shown, including:

[0121] Multiple mounting bases 24 are connected to the respective rotating devices 30 by bolts, with a small gap between the bolt holes on the respective rotating devices 30 and the bolts;

[0122] Multiple sets of three-way adjustment mechanisms are connected to each mounting base 24, each three-way adjustment mechanism includes:

[0123] The vertical adjustment screw 25 is screwed on the mounting base 24 and abuts against the rotating device 30. The vertical height of the rotating device 30 can be adjusted by rotating;

[0124] A transverse adjustment support plate 26 is connected to the mounting base 24;

[0125] The lateral adjustment screw 27 is screwed on the lateral adjustment support plate 26 and abuts against the rotating device 30, and can adjust the lateral position of the rotating device 30 by rotating;

[0126] An axial adjustment support plate 28 is connected to the mounting base 24;

[0127] The axial adjustment screw 29 is screwed onto the axial adjustment support plate 28 and abuts against the rotating device 30 , and can adjust the axial position of the rotating device 30 by rotating it.

[0128] Based on the installation structure disclosed in the above embodiment, installation can be performed according to the following steps:

[0129] Accurately install gas turbine 2 using three-dimensional laser interferometry positioning technology;

[0130] The torque measuring instrument 3, gearbox 4, generator 4 and corresponding couplings are precisely installed in sequence backward from the gas turbine 2. The hydraulic dynamometer 1 and corresponding couplings are precisely installed forward from the gas turbine 2. The position of each rotating device 30 is finely adjusted using the three-way adjustment mechanism on the mounting base 24.

[0131] The intake and exhaust systems are precisely installed and positioned with the gas turbine 2 as the reference, ensuring uniform gaps between the plug-in and flexible connection structures. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar parts between the various embodiments can be referenced for reference only.

[0132] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will fall within the scope of protection of the present application.

Claims

1. A two-way output gas turbine test bench, characterized in that: include: A hydraulic dynamometer (1) is connected to a front output shaft of a gas turbine (2) via a coupling; a torque measuring instrument (3) connected to the rear output shaft of the gas turbine (2) via a coupling; A gearbox (4) connected to a torque measuring instrument (3) via a coupling; A generator (5) is connected to the gearbox (4) via a coupling and is connected to a load box; in, A coupling connecting the front output shaft of the gas turbine (2) and the hydraulic dynamometer (1), and a coupling connecting the rear output shaft of the gas turbine (2) and the torque measuring instrument (3), comprising: A high power absorbing connecting shaft (6); Two multi-stage membrane discs (7) have a transfer cylinder on the inner side of one end, and the two transfer cylinders are butted against both ends of the high-power absorption connection shaft (6); the outer sides of the two multi-stage membrane discs (7) have an annular connection edge; Two support cylinders (8), one end of which extends into the adapter cylinders on the two multi-stage membrane discs (7), and is fitted with a small gap between the corresponding adapter cylinders, the side wall of which is connected to the inner side of the two multi-stage membrane discs (7), and the outer wall of the other end has an annular support edge; the two annular support edges are located outside the two annular connection edges; An annular connecting edge and an annular supporting edge are connected to a flange provided on a front output shaft or a rear output shaft of a gas turbine (2) through bolts; The other annular connecting edge and the annular supporting edge are connected to the input shaft of the hydraulic dynamometer (1) or the flange provided on the input shaft of the torque measuring instrument (3) through bolts; A coupling connecting the torque measuring instrument (3) and the gear box (4), and a coupling connecting the gear box (4) and the generator (5), comprising: A low power absorbing connecting shaft (9); Two adapter cylinders (10), one end of which is butted against both ends of the low-power absorption connecting shaft (9), and the outer wall of the other end has an annular adapter edge; Two diaphragm groups (11) are arranged outside the two annular transition edges; An annular transition edge and a diaphragm assembly (11) are connected to a flange provided on an output shaft of a torque measuring instrument (3) or an output shaft of a gear box (4) through bolts, wherein the bolts are fitted with a small clearance between the bolt holes on the annular transition edge; Another annular transition edge and the diaphragm group (11) are connected to the input shaft of the gearbox (4) or the flange provided on the generator (5) through bolts, and the bolts therein are matched with the bolt holes on the annular transition edge with a small clearance.

2. The bidirectional output gas turbine test bench according to claim 1, characterized in that: Also includes: An air intake rectifier volute (12) is sleeved on the outer periphery of a coupling connecting the front output shaft of the gas turbine (2) and the hydraulic dynamometer (1), and an outlet of the volute is connected to the inlet of the gas turbine (2) by bolts through an annular canvas (13); An air intake rectifier (14) is sleeved on the outer periphery of a coupling connected to the front output shaft of the gas turbine (2) and the hydraulic dynamometer (1), is located in the rectifier volute (12), has one end connected to the inner wall of the rectifier volute (12), and has the other end overlapped with the front end of a shaft protection sleeve connected to the front output shaft of the gas turbine (2); The air inlet pipe (15) is L-shaped as a whole, has a rectangular cross section, and has a trumpet-shaped inlet. The axis of the inlet end is parallel to the axis of the gas turbine (2), and the outlet is connected to the inlet of the air intake volute (12); A honeycomb rectifier (16) is provided in the outlet end of the air inlet pipe (15); Two fine-pore rectifier nets (17) with a guide frame are provided in the outlet end of the air inlet pipe (15) and are located downstream of the honeycomb rectifier (16); A multi-channel grille guide plate (18) is arranged in a curved portion of the air intake pipe (15); An exhaust guide elbow (19) is sleeved on the outer periphery of the rear output shaft of the gas turbine (2), with its inlet connected to the outlet of the gas turbine (2), and its outlet end axis being parallel to the outlet end axis of the intake pipe (15); The exhaust pipe (20) has a straight section at the front end of the inlet and an expansion section at the rear end, wherein the straight section is sleeved on the outer periphery of the outlet end of the exhaust guide bend (19) and is fitted with a small gap between the outlet end of the exhaust guide bend (19), and an ejection cooling device or a high-pressure water spraying device is provided therein; A fixed fulcrum (21) is fixedly supported on the outside of the middle portion of the exhaust pipe (20); A sliding support (22) is slidably supported on the outside of the outlet end of the exhaust pipe (20); A small hole silencer (23) is provided inside the outlet end of the exhaust pipe (20).

3. The bidirectional output gas turbine test bench according to claim 1, characterized in that: A hydraulic dynamometer (1), a torque measuring instrument (3), a gear box (4), and a generator (5) are rotating equipment (30); The bidirectional output gas turbine test bench further includes: A plurality of mounting bases (24) are connected to the respective rotating devices (30) via bolts, wherein a small gap is formed between the bolt holes on the respective rotating devices (30) and the bolts; Multiple sets of three-way adjustment mechanisms are connected to each mounting base (24), each three-way adjustment mechanism comprising: A vertical adjustment screw (25) is screwed onto the mounting base (24) and abuts against the rotating device (30), and can adjust the vertical height of the rotating device (30) by rotating; A transverse adjustment support plate (26) connected to the mounting base (24); A transverse adjustment screw (27) is screwed onto the transverse adjustment support plate (26) and abuts against the rotating device (30), and can adjust the transverse position of the rotating device (30) by rotating; An axial adjustment support plate (28) connected to the mounting base (24); The axial adjustment screw (29) is screwed onto the axial adjustment support plate (28) and abuts against the rotating device (30), and can adjust the axial position of the rotating device (30) by rotating.

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