Same-side input double-shaft compressor tester mounting and debugging method

Abstract

The invention provides a same-side input double-shaft compressor tester mounting and debugging method, and belongs to the field of aero-engine testing, and the method comprises the steps: mounting an air inlet guide rail and an equipment steel platform; an air inlet pipeline and an exhaust pipeline are installed; installing an exhaust system; installing and adjusting a test piece; mounting a transmission system and a power system; installing and debugging an auxiliary system used for supporting the operation of the main body equipment; carrying out no-load operation debugging on the power system and the transmission system; the power system drives the test piece to operate through the transmission system, the design working condition of the test piece is achieved, on-load joint debugging is completed, and whether the double-shaft compressor tester can reach the design index or not is checked. According to the invention, concentricity adjustment, test piece installation, combined debugging risk control and the like can be realized, the test efficiency and success rate can be improved, and the debugging test period is shortened.

Description

Technical Field

[0001] The present application relates to the field of aero-engine testing, and in particular to a method for installing and debugging a dual-axis compressor tester with same-side input. Background Art

[0002] like Figure 1 As shown, the dual-axis compressor tester with same-side input mainly includes: the power system 10, transmission system 20, exhaust system 30, exhaust pipeline 40, test piece 50, intake pipeline 60 and other main equipment, as well as auxiliary systems such as lubricating oil system, hydraulic system, air system, water system, electrical system, control system, and test system. The test piece 50 is generally composed of a fan or low-pressure compressor as the outer shaft rotor, and a high-pressure compressor as the inner shaft rotor. The power system 10 includes an outer shaft power motor 11 and an inner shaft power motor 12. The transmission system 20 includes an outer shaft speed increaser 21, an inner shaft speed increaser 22, and a coaxial gearbox 23. The outer shaft speed increaser 21 and the inner shaft speed increaser 22 are respectively connected to the outer shaft power motor 11 and the inner shaft power motor 12, and drive the inner and outer shafts of the test piece 50 through the coaxial gearbox 23. The exhaust system 30 and exhaust pipeline 40 are used for exhaust, and the intake pipeline 60 is used to provide test gas with a suitable temperature and flow rate to the test piece 50. The dual-axis compressor tester has the characteristics of high speed, high exhaust temperature and pressure, and complex transmission structure, making it extremely difficult to install and debug.

[0003] There are no relevant specifications for the installation and commissioning of a biaxial compressor tester with same-side input in the prior art. Usually, the installation and commissioning of the equipment are carried out with reference to a conventional uniaxial compressor tester. However, the installation and commissioning with reference to a uniaxial compressor tester has the following disadvantages: 1) The equipment installation sequence and debugging process are not adapted to the characteristics of the dual-axis compressor tester with same-side input, making it difficult to achieve fast and efficient installation and debugging; 2) The concentricity adjustment method of the concentric transmission device with an outer sleeve and inner shaft, which is unique to the same-side input structure, is unclear, making it impossible to align the shaft system safely and quickly; 3) There is a lack of scientific and effective methods for the installation and adjustment of the long cantilever support structure of the test piece with input on the same side; 4) There is a lack of effective identification and control methods for risks such as high exhaust temperature and large shaft vibration during the debugging of the dual-axis compressor tester. Summary of the Invention

[0004] The purpose of the present application is to provide a method for installing and debugging a dual-axis compressor tester with same-side input, so as to solve or alleviate at least one problem in the background technology.

[0005] The technical solution of this application is: a method for installing and debugging a biaxial compressor tester with same-side input, comprising: S10. Install the intake guide rail and the equipment steel platform. The intake guide rail is used to support the intake pipeline, and the intake pipeline is installed on the intake guide rail so that the intake pipeline can move axially along the intake guide rail. The equipment steel platform is used to install and fix the main equipment of the twin-spool compressor tester. The main equipment includes an exhaust system, a transmission system, a power system, and a test piece. S20. Install the intake pipeline and the exhaust pipeline. The intake pipeline is used to provide a uniform and stable intake environment for the test piece and measure the intake flow rate and intake temperature. The exhaust pipeline is used to discharge the high-temperature and high-pressure air discharged from the test piece to the exhaust tower and measure the flow rate. S30. Install the exhaust system. The exhaust system constitutes the positioning reference for the entire shafting of the twin-spool compressor tester. S40. Install and adjust the test piece. The test piece is installed and positioned on the exhaust duct of the exhaust system by means of the exhaust casing cantilever. An intermediate auxiliary support and a front auxiliary support are respectively installed at the intermediate casing and the front casing of the test piece. S50. Install the transmission system and the power system, and synchronously adjust the concentricity of each device in the transmission system and the power system. S60. Install and debug the auxiliary system for supporting the operation of the main equipment, and verify the functional completeness of the auxiliary system item by item. S70. After completing the installation of the main equipment and the installation and debugging of the auxiliary system, conduct no-load operation debugging of the power system and the transmission system to verify the operation stability and control reliability. S80. Drive the test piece to operate through the power system via the transmission system, reach the design condition of the test piece to complete the load-bearing joint debugging, assess whether the twin-spool compressor tester can meet the design indicators, and verify the load-bearing operation stability and functional completeness. Among them, the test piece is the entire compression system composed of a fan and a compressor.

[0006] Preferably, the process of installing the intake guide rail and the equipment steel platform includes: S11. Lay the intake guide rail to ensure that each device of the intake pipeline can move axially along the intake guide rail. During laying, ensure the levelness of the intake guide rail and make the intake guide rail parallel to the baseline of the workshop. S12. Then, take the intake guide rail as the reference to adjust the position of the equipment steel platform. Take the center line and the upper surface of the intake guide rail as the reference to position the height and horizontal direction of the equipment steel platform, and take the center line of the exhaust duct of the exhaust system as the reference to position the axis direction of the equipment steel platform. S13. The equipment steel platform is fixed to the cement foundation of the workshop in a form of block layout. The process includes: First, accurately place the position of each piece of the equipment steel platform with reference to the reference line. Before placing, first place the anchor bolts into the bolt holes to ensure uniform gaps and parallel to each other. Subsequently, the height of all equipment steel platforms is uniformly adjusted by using the jackscrews and pads on each equipment steel platform to ensure the overall flatness of the equipment steel platforms; Then, non-shrinkage cement is poured into the bolt holes of each anchor bolt. After the cement cures and reaches the required strength, the anchor bolts of the equipment steel platform are tightened; Finally, the gap between the cement foundation and the equipment steel platform is filled with non-shrinkage cement; S14. After the equipment steel platform is installed and meets the strength requirements after curing, the main equipment is installed.

[0007] Preferably, the intake pipeline includes a flow pipe, an intake throttle valve, a diffuser section, and a surge tank. When installed, the intake pipeline is parallel to the intake guide rail and can axially move on the intake guide rail to facilitate the disassembly and assembly of the test piece; when installed, the exhaust pipeline is ensured that the axis of the exhaust pipeline has no skew. The exhaust pipeline is supported by a support frame, and the exhaust pipeline can move freely on the support frame to avoid the influence of high-temperature thermal expansion on the positioning of the main equipment.

[0008] Preferably, the exhaust system includes an exhaust duct, an exhaust volute, and a support seat. The exhaust duct is fixed to the equipment steel platform by 4 support seats. The test piece and the exhaust volute are respectively connected to the inlet side and the outlet side of the exhaust duct; During the installation process, with the aid of a laser level, the heights of the 4 support seats are ensured to be the same by adjusting the pads, and the tightness of each support surface after connection to the exhaust duct is ensured to be not less than 80%. Finally, the perpendicularity of the connection surface between the exhaust duct and the test piece after installation is checked by a frame level to ensure that the axis of the exhaust system is parallel to the axis of the equipment steel platform.

[0009] Preferably, the process of installing and positioning the test piece on the exhaust duct of the exhaust system by cantilever mounting of the exhaust casing of the test piece is as follows: The test piece is horizontally lifted by a lifting tool, and the test piece is moved to ensure that the mounting edge of the exhaust casing of the test piece fits with the mounting edge of the exhaust duct, and the connection and tightening of the main support are achieved through bolts. After the main support is tightened, the levelness of the test piece is checked by a level, and the test piece is ensured to be level by adjusting the lifting tool. During this process, the lifted state is maintained to avoid the sinking of the inlet of the test piece; During the process of installing the intermediate auxiliary support and the front auxiliary support at the intermediate casing and the front casing of the test piece respectively: The intermediate auxiliary support is installed while maintaining the hoisting state of the test piece, and the height of the support seat is gradually adjusted until it fits with the intermediate casing of the test piece. During the height adjustment process of the intermediate auxiliary support, the height change of the test piece is monitored by a dial indicator to ensure that the vertical change of the intermediate casing of the test piece is not greater than 0.05 mm. At the same time, the levelness of the test piece is checked by a level to avoid the skew of the axis of the test piece; The front auxiliary support is installed according to the same principle.

[0010] Preferably, the transmission system includes a coaxial gearbox, an external shaft speed increaser, an internal shaft speed increaser, a transmission shaft, and a coupling; the power system includes an external shaft power motor, an internal shaft power motor, a supporting barring gear device, and an encoder. First, initially position the equipment of the transmission system and the power system according to their theoretical dimensions, and roughly adjust the horizontal, vertical, and axial positions of each equipment to ensure that the deviation in each direction is within the compensation range of the coupling. Then, use the coupling and transmission shaft of the transmission system to drive the external shaft and internal shaft of the test piece respectively through the barring gear device, and check and adjust the concentricity of each equipment one by one with a laser alignment instrument. Among them, the adjustment sequence for synchronously adjusting the concentricity of the equipment of the transmission system and the power system is: coaxial gearbox, external shaft speed increaser, external shaft power motor, internal shaft speed increaser, internal shaft power motor. Specifically, it includes: the reference for adjusting the concentricity of the coaxial gearbox is the test piece installed on the exhaust duct, and only the alignment condition of the external shaft is used as the evaluation criterion when adjusting the concentricity of the coaxial gearbox; after completing the adjustment of the concentricity of the coaxial gearbox, adjust the concentricity of the external shaft speed increaser and the internal shaft speed increaser respectively with the coaxial gearbox as the reference; subsequently, adjust the concentricity of the external shaft power motor with the external shaft speed increaser as the reference, and adjust the concentricity of the internal shaft power motor with the internal shaft speed increaser as the reference.

[0011] Preferably, the auxiliary system includes a lubricating oil system, a hydraulic system, an air system, and a water system. The installation and commissioning process of each auxiliary system includes: S61, ensure that the supply and return oil pumps of the lubricating oil system operate normally, and the oil supply flow rate, pressure, and temperature meet the lubrication requirements of each equipment; S62, ensure that the oil pressure of the hydraulic system is stable and meets the adjustment requirements of the adjustable vane angle, exhaust throttle valve, and hydraulic valve of the test piece; S63, ensure that the air source of the air system supplies air stably, and the pressure and flow rate are adjustable to meet the sealing requirements of the test piece and each equipment; S64, ensure that the water supply flow rate and pressure of the water system meet the cooling requirements of each equipment.

[0012] Preferably, the process of carrying out no-load operation commissioning of the power system and the transmission system includes: S71, separately carry out no-load operation commissioning of the external shaft power motor and the internal shaft power motor respectively to verify the completeness of the speed control function and the stability of the motor operation; S72, jointly carry out no-load operation commissioning of the external shaft power motor and the internal shaft power motor to verify the speed split and linkage control functions; S73, separately carry out no-load operation commissioning of the external shaft power motor, the internal shaft power motor and the adapted speed increaser to verify the stability of the speed increaser operation; S74, carry out no-load operation commissioning of the internal shaft power motor, the external shaft power motor and the adapted speed increaser and the coaxial gearbox; S75: During the commissioning process, the shaft system vibration and bearing temperature are detected to ensure that the equipment is operating normally and meets the conditions for subsequent load-carrying joint commissioning.

[0013] Preferably, the process of performing on-load joint debugging includes: S81: Run-in the fan and compressor along the blockage points and increase the speed to the design speed, conduct no-load operation debugging of each system, and assess the operational stability of the equipment under load; S82, recording the performance of the fan and compressor from the blockage point to the maximum efficiency point, evaluating the test data by combining the test results of the biaxial compressor tester and the simulation calculation results, and analyzing the test accuracy of key parameters, including pressure, temperature, flow rate, speed, and torque; S83, records the performance of the compressor from the blocking point to the breathing point, verifying the completeness and reliability of the forced breathing, retreated breathing, and state recovery functions; S84, adjust the fan bypass ratio and the internal and external shaft speed difference respectively, record the fan and compressor performance under different matching conditions, and verify the completeness of the matching characteristics research function.

[0014] The installation and debugging method of a dual-axis compressor tester with same-side input proposed in this application can realize concentricity adjustment, test piece installation, joint debugging risk control, etc., which can improve test efficiency and success rate and shorten the debugging test cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions provided by this application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application.

[0016] Figure 1 Schematic diagram of a biaxial compressor tester with same-side input in the prior art.

[0017] Figure 2 Schematic diagram of the installation and debugging method of the dual-axis compressor tester with same-side input in this application.

[0018] Reference numerals: 10-Powertrain 11-External shaft power motor 12-Inner shaft power motor 20-Transmission system 21-External shaft speed increaser 22-Inner shaft speed increaser 23-Coaxial gearbox 30-Exhaust system 40-Exhaust pipe 50-test piece 60-Intake pipe 70-Equipment Steel Platform Specific Embodiment

[0019] To make the purpose, technical solution and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings in the embodiments of this application.

[0020] As Figure 2 shown, the installation and commissioning method of the coaxial-input dual-axis compressor tester proposed in this application includes the following processes: S10. Installation of the intake guide rail and the equipment steel platform, which provides an installation foundation for each main equipment.

[0021] In this application, the intake guide rail is used to support the intake pipeline 60. To adapt to the lengths of different test pieces 50 and facilitate the disassembly and assembly of the test piece 50, the intake pipeline 60 is installed on the intake guide rail and carried by the intake guide rail to facilitate its axial movement.

[0022] The equipment steel platform 70 is used to install and fix the main equipment such as the exhaust system 30, the drive system 20, the power system 10, and the test piece 50 of the dual-axis compressor tester, and is the support foundation of the entire dual-axis compressor tester. The equipment steel platform 70 has a high flatness, which is convenient for adjusting the position of the main equipment after installation and ensuring the alignment of the shafting.

[0023] The process of installing the intake guide rail and the equipment steel platform 70 includes: S11. First, lay the intake guide rail to ensure that the intake equipment such as the intake pressure stabilizing tank can move axially along the intake guide rail. During laying, ensure the levelness of the intake guide rail and make it parallel to the baseline of the workshop.

[0024] S12. Then, adjust the position of the equipment steel platform 70 with the intake guide rail as the reference. Position the height and horizontal direction of the equipment steel platform 70 with the center line and the upper surface of the intake guide rail as the reference, and position the axial direction of the equipment steel platform 70 with the center line of the exhaust duct of the exhaust system 30 as the reference.

[0025] S13. Considering that the axial direction (about 17 meters) and the horizontal direction (about 9 meters) of the coaxial-input dual-axis compressor tester are both relatively large, the equipment steel platform 70 is usually arranged in a segmented form and fixed to the cement foundation of the workshop respectively. First, accurately place the position of each piece of equipment steel platform with reference to the reference line (place the anchor bolts into the bolt holes before placing), ensure that the gaps are uniform and parallel to each other; then use the jackscrews and pads on each piece of equipment steel platform to uniformly adjust the height of all equipment steel platforms to ensure the overall flatness of the equipment steel platform 70; then pour non-shrinkage cement into each anchor bolt hole, wait for the cement to cure and reach the required strength, and then tighten the anchor bolts at various places of the equipment steel platform 70; finally, fill the gap between the cement foundation and the equipment steel platform with non-shrinkage cement.

[0026] S14: After the equipment steel platform 70 is installed and meets the strength requirements after maintenance, the exhaust system 30, transmission system 20 and power system 10 and other equipment can be installed.

[0027] S20 , the installation of the intake pipe 60 and the exhaust pipe 40 provides a positioning reference for the installation of the exhaust system 30 .

[0028] The intake line 60 typically includes a flow tube, an intake throttle, an expansion section, a pressure regulator, and other equipment. It provides a uniform and stable intake environment for the test piece 50 and measures parameters such as intake flow rate and temperature. The intake line 60 is installed parallel to the intake rail and is free to move axially on the rail, facilitating assembly and disassembly of the test piece 50.

[0029] Exhaust pipe 40 is used to discharge high-temperature, high-pressure air from test piece 30 to an exhaust tower for flow measurement. During installation, ensure that the exhaust pipe 40's axis is not deflected. Exhaust pipe 40 is supported by a support frame, allowing it to move freely on the support frame to prevent thermal expansion from affecting the main equipment's positioning.

[0030] S30 , installing the exhaust system 30 to provide support for the test piece 50 .

[0031] For a biaxial compressor tester with same-side input, the exhaust system serves as the positioning reference for the entire shaft system and therefore needs to be installed first. The exhaust system 30 primarily comprises the exhaust duct, exhaust volute, and support brackets. The exhaust duct is secured to the equipment's steel platform 70 via four support brackets. The test specimen 50 and exhaust volute are connected to the exhaust duct's inlet and outlet, respectively.

[0032] During the installation of the exhaust system 30, a laser level was used to ensure the height consistency of the four support brackets using adjustment pads. The contact between each support surface and the exhaust duct was to be at least 80%. Finally, a frame level was used to check the verticality of the connection surface between the exhaust duct and the test piece 50 after installation, ensuring that the axis of the exhaust system 30 was parallel to the axis of the equipment steel platform 70.

[0033] S40, installation and adjustment of the test piece 50, provides a reference for subsequent adjustment of the concentricity of the equipment.

[0034] Test piece 50 is the test subject of a dual-axis compressor tester with ipsilateral input. It is mounted on the exhaust duct of exhaust system 30 via an exhaust case cantilever for positioning. Test piece 50 is characterized by its long axial length and heavy weight. Relying solely on the exhaust duct for fixation inevitably results in inlet sinking. To ensure reliable positioning of the long cantilever structure under high-speed rotation, in addition to the exhaust case serving as the primary support, intermediate and front auxiliary supports are installed on the intermediate and front cases of test piece 50, respectively.

[0035] Considering that both ends of the inner shaft transmission shaft between the test piece 50 and the coaxial gearbox 23 are usually spline-driven and have limited radial compensation capabilities, only the outer shaft coupling is installed when the test piece 50 is adjusted for the first time. The test piece 50 can only be removed when the centering deviation between the coaxial gearbox 23 and the test piece 50 is within the compensation range of the inner shaft spline. After the inner shaft transmission shaft is installed, the test piece 50 can be installed again.

[0036] During installation, the test specimen 50 is first hoisted horizontally using a lifting fixture. The specimen 50 is then smoothly moved to ensure that the exhaust casing mounting edge of the specimen 50 aligns with the exhaust duct mounting edge. The main supports are then connected and secured using bolts. The specimen 50 is kept suspended during this process to prevent the inlet of the specimen 50 from sinking. After the main supports are secured, the specimen 50 is checked for levelness using a spirit level and the lifting fixture is adjusted to ensure it remains level.

[0037] While keeping the test specimen 50 suspended, install the intermediate auxiliary support and gradually adjust the support base height until it aligns with the intermediate housing of the test specimen 50. During this adjustment, monitor the height of the test specimen 50 using a dial indicator to ensure that the vertical change in the intermediate housing of the test specimen 50 does not exceed 0.05 mm. Simultaneously, check the horizontality of the test specimen 50 using a spirit level to prevent axial deviation of the test specimen 50.

[0038] Install the front auxiliary support according to the same principle.

[0039] Through the above process, it can be ensured that the middle auxiliary support and the front auxiliary support can effectively support the vertical direction of the test piece 50, and it can avoid that the test piece 50 is over-constrained due to multiple supports. In addition, the test piece 50 can remain in a horizontal state after installation, which is convenient for the concentricity adjustment of the back-end equipment.

[0040] S50 , the transmission system 20 and the power system 10 are installed to provide driving power for the test piece 50 .

[0041] The transmission system 20 of the dual-axis compressor tester with same-side input includes a coaxial gearbox 23 and two first-stage speed increasers (i.e., the outer shaft speed increaser 21 and the inner shaft speed increaser 22), as well as transmission shafts, couplings and other equipment; the power system 10 includes two power motors (i.e., the outer shaft power motor 11 and the inner shaft power motor 12) and supporting turning devices, encoders and other equipment.

[0042] First, each device is initially positioned according to its theoretical dimensions, and its horizontal, vertical, and axial positions are roughly adjusted to ensure that deviations in each direction are within the coupling's compensation range. The coupling and drive shaft in transmission system 20 then drive the outer and inner shafts of test piece 50, respectively, using a turning mechanism. A laser alignment system is then used to check and adjust the concentricity of each device individually.

[0043] The order of adjusting the concentricity of each device is: coaxial gearbox 23, outer shaft speed increaser 21, outer shaft power motor 11, inner shaft speed increaser 22, inner shaft power motor 12.

[0044] The benchmark for adjusting the concentricity of the coaxial gearbox 23 is the test piece 50 mounted on the exhaust duct. Because both the coaxial gearbox 23 and the test piece 50 are concentric transmission structures with an outer shaft within an inner shaft, the coaxiality between the inner and outer shafts is guaranteed by the structure. Therefore, the concentricity of the equipment is judged solely on the alignment of the outer shaft.

[0045] After completing the concentricity adjustment of the coaxial gearbox 23, the concentricity of the outer shaft speed increaser 21 and the inner shaft speed increaser 22 are adjusted respectively based on the coaxial gearbox 23; then the concentricity of the outer shaft power motor 11 is adjusted based on the outer shaft speed increaser 21, and the concentricity of the inner shaft power motor 12 is adjusted based on the inner shaft speed increaser 22.

[0046] Because the twin-axis compressor tester with same-side input features a long axis (over 10 meters), even a slight deviation in the axis of the front-end equipment can result in significant offset in the rear-end equipment. If the rear-end equipment adjustment exceeds the compensation range, the front-end equipment alignment should be rechecked and appropriate pre-biasing should be considered if necessary.

[0047] S60, installation and commissioning of auxiliary systems, used to support the operation of the main equipment and verify the functional completeness item by item.

[0048] Auxiliary systems include lubricating oil system, hydraulic system, air system, water system, etc. After the main equipment is installed and positioned, the installation and connection of the auxiliary systems should be carried out to avoid restrictions on the position adjustment of the main equipment after the auxiliary systems are installed.

[0049] The installation and commissioning process of each auxiliary system includes: S61: Ensure that the oil supply and return pumps of the lubricating oil system operate normally, and that the oil supply flow, pressure, and temperature meet the lubrication requirements of each equipment; S62, the oil pressure of the hydraulic system should be kept stable to meet the adjustment requirements of the test piece 50, such as the adjustable blade angle, exhaust throttle, and hydraulic valve; S63, the air supply of the air system should be stable, with adjustable pressure and flow, to meet the sealing requirements of the test piece 50 and various equipment; S64: Ensure that the water supply flow and pressure of the water system meet the cooling requirements of each equipment; S65, the debugging of other subsystems should ensure that the basic conditions for subsequent no-load operation debugging and load combined debugging are met. Other additional functions can be gradually completed during the subsequent debugging process.

[0050] S70, no-load operation debugging, verifying the equipment operation stability and control reliability; After the installation of the main equipment and the installation and commissioning of the auxiliary system are completed, the no-load running commissioning of the power system 10 and the transmission system 20 is carried out to verify their running stability and control reliability.

[0051] The no-load running commissioning sequence of the coaxial input twin-spool compressor tester is as follows: S71, separately carry out the no-load running commissioning of the outer shaft power motor 11 and the inner shaft power motor 12 to verify the completeness of the speed control function and the running stability of the motors; S72, jointly carry out the no-load running commissioning of the outer shaft power motor 11 and the inner shaft power motor 12 to verify the speed split / linkage control function; S73, separately carry out the no-load running commissioning of the outer shaft power motor 11, the inner shaft power motor 12 and their matching speed increasers to verify the running stability of the speed increasers; S74, carry out the no-load running commissioning of the inner shaft power motor 12, the outer shaft power motor 11 and the matching speed increaser and the coaxial gearbox 23; S75, during the commissioning process, ensure the normal operation of the equipment by detecting parameters such as shafting vibration and bearing temperature to meet the conditions for subsequent load-bearing joint commissioning.

[0052] S80, load-bearing joint commissioning, assess the design indicators of the twin-spool compressor tester and verify the reliability and completeness of the load-bearing operation.

[0053] The load-bearing joint commissioning is to drive the test piece 50 to operate through the power system 10 via the transmission system 20 to reach the design working conditions of the test piece 50, assess whether the twin-spool compressor tester can meet the design indicators, and verify the reliability and completeness of the load-bearing operation. The test piece 50 of the coaxial input twin-spool compressor tester is the entire compression system composed of a fan and a compressor.

[0054] The load-bearing joint commissioning should gradually increase the test working conditions according to the characteristics of the test piece. The main commissioning steps include: S81, run-in and increase the speed along the fan and compressor block points to the design speed, carry out the no-load running commissioning of each system, and assess the running stability of the equipment under load; S82, respectively record the performance from the fan and compressor block points to the highest efficiency point, evaluate the test data in combination with the test results and simulation calculation results of the twin-spool compressor tester, and analyze the test accuracy of key parameters such as pressure, temperature, flow rate, speed, and torque; S83, respectively record the performance from the compressor block point to the surge point, verify the completeness and reliability of functions such as forced surge, retreat surge, and state recovery; S84, respectively adjust variables such as the fan bypass ratio and the inner and outer shaft speed differences, record the performance of the fan and compressor under different matching states, and verify the completeness of the matching characteristic research function.

[0055] The main risks faced in debugging a dual-axis compressor tester include: the high pressure ratio characteristics of the multi-stage compression system lead to high exhaust temperatures, which in turn affect the stable operation of surrounding equipment; the long span, multiple support points, and concentric transmission structure lead to complex shaft system vibration characteristics, and excessive vibration affects high-speed operation. To address debugging risks, this application adopts the following control methods: 1) Provide heat insulation wrapping on the outside of high-temperature components (such as exhaust volute, exhaust casing, etc.) to prevent high-temperature heat radiation from affecting surrounding equipment; 2) Use cooling air to cool and insulate heat-sensitive components (such as hydraulic actuators, vibration sensors, etc.) to prevent high-temperature failure of precision components; 3) Arrange temperature monitoring in high-temperature environments and on equipment surfaces in a reasonable manner. When the temperature approaches the limit value, take measures such as reducing the test state in a timely manner to avoid serious consequences of equipment failure; 4) In high temperature environments, thermal expansion and deformation of supports affect equipment positioning. Reasonable concentricity can be reserved to optimize the alignment of the shaft system during operation to avoid excessive vibration. 5) The characteristics of the long shaft system are complex rotor dynamic characteristics and a large number of critical speeds. The machine balancing method can be used to optimize the balance during operation and reduce vibration response; 6) Synchronous rotation of the inner and outer shafts at high speeds is prone to vibration coupling. This can be avoided by adjusting the internal and external shaft speed difference as appropriate.

[0056] The installation and debugging method of a dual-axis compressor tester with same-side input proposed in this application can realize concentricity adjustment, test piece installation, joint debugging risk control, etc., which can improve test efficiency and success rate and shorten the debugging test cycle.

[0057] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for installing and debugging a biaxial compressor tester with same-side input, characterized in that: Including: S10. Install the intake guide rail and the equipment steel platform. The intake guide rail is used to support the intake pipeline, and the intake pipeline is installed on the intake guide rail so that the intake pipeline can axially move along the intake guide rail. The equipment steel platform is used to install and fix the main equipment of the twin-spool compressor tester. The main equipment includes an exhaust system, a transmission system, a power system, and a test piece. S20. Install the intake pipeline and the exhaust pipeline. The intake pipeline is used to provide a uniform and stable intake environment for the test piece and measure the intake flow rate and intake temperature. The exhaust pipeline is used to discharge the high-temperature and high-pressure air discharged from the test piece to the exhaust tower and measure the flow rate. S30. Install the exhaust system, which constitutes the positioning reference for the entire shafting of the twin-spool compressor tester. S40. Install and adjust the test piece. The test piece is installed and positioned by cantilever mounting on the exhaust duct of the exhaust system through the exhaust casing. Intermediate auxiliary supports and front auxiliary supports are respectively installed at the intermediate casing and the front casing of the test piece. S50. Install the transmission system and the power system, and synchronously adjust the concentricity of each device of the transmission system and the power system. S60. Install and commission the auxiliary system for supporting the operation of the main equipment, and verify the functional completeness of the auxiliary system item by item. S70. After the installation of the main equipment and the installation and commissioning of the auxiliary system are completed, conduct no-load running commissioning of the power system and the transmission system to verify the running stability and control reliability. S80. Drive the test piece to operate through the power system via the transmission system, reach the design condition of the test piece to complete the load-bearing joint commissioning, assess whether the twin-spool compressor tester can meet the design indicators, and verify the load-bearing running stability and functional completeness. Among them, the test piece is the entire compression system composed of a fan and a compressor.

2. The installation and debugging method of the same-side input biaxial compressor tester according to claim 1, characterized in that: The process of installing the intake guide rail and the equipment steel platform includes: S11. Lay the intake guide rail to ensure that each device of the intake pipeline can axially move along the intake guide rail. During laying, ensure the levelness of the intake guide rail and make the intake guide rail parallel to the baseline of the workshop. S12. Then, based on the intake guide rail, adjust the position of the equipment steel platform. Position the height and horizontal direction of the equipment steel platform based on the center line and the upper surface of the intake guide rail, and position the axis direction of the equipment steel platform based on the center line of the exhaust duct of the exhaust system. S13. The equipment steel platform is fixed to the cement foundation of the workshop in a form of block layout. The process includes: First, refer to the reference line to place the position of each block of the equipment steel platform. Before placing, place the anchor bolts into the bolt holes to ensure uniform gaps and parallel to each other. Subsequently, use the jackscrews and pads on each block of the equipment steel platform to uniformly adjust the height of all the equipment steel platforms to ensure the overall flatness of the equipment steel platform. Then, pour non-shrinkage cement into the bolt holes of each anchor bolt. After the cement cures and reaches the required strength, tighten the anchor bolts of the equipment steel platform. Finally, fill the gap between the cement foundation and the equipment steel platform with non-shrinkage cement. S14. After the installation of the equipment steel platform is completed and it meets the strength requirements after curing, install the main equipment.

3. The installation and debugging method of the same-side input biaxial compressor tester according to claim 2, characterized in that: The intake pipeline includes a flow tube, an intake throttle valve, a diffuser section, and a surge tank. When installed, the intake pipeline is parallel to the intake guide rail and can axially move on the intake guide rail, facilitating the disassembly and assembly of the test piece. When installed, it is ensured that the axis of the exhaust pipeline has no skew. The exhaust pipeline is supported by a support frame, and the exhaust pipeline can freely move on the support frame to avoid the influence of high-temperature thermal expansion on the positioning of the main equipment.

4. The installation and debugging method of a biaxial compressor tester with same-side input according to claim 3, characterized in that: The exhaust system includes an exhaust duct, an exhaust volute, and a support base. The exhaust duct is fixed to the equipment steel platform by 4 support bases. The test piece and the exhaust volute are respectively connected to the inlet side and the outlet side of the exhaust duct. During the installation process, with the aid of a laser level, the heights of the 4 support bases are ensured to be the same by adjusting the pads, and it is ensured that the tightness of each support surface after connection to the exhaust duct is not less than 80%. Finally, the perpendicularity of the connection surface between the exhaust duct and the test piece after installation is checked by a frame level to ensure that the axis of the exhaust system is parallel to the axis of the equipment steel platform.

5. The installation and commissioning method of the coaxial compressor tester with the same-side input according to claim 4, characterized in that The process of installing and positioning the test piece on the exhaust duct of the exhaust system by cantilever mounting through the exhaust casing is as follows: The test piece is horizontally lifted by a lifting tool, and the test piece is moved to ensure that the mounting edge of the exhaust casing of the test piece fits the mounting edge of the exhaust duct, and the connection and tightening of the main support are achieved through bolts. After the main support is tightened, the levelness of the test piece is checked by a level, and the test piece is ensured to be level by adjusting the lifting tool. During this process, the lifted state is maintained to avoid the sinking of the inlet of the test piece. The process of installing the intermediate auxiliary support and the front auxiliary support at the intermediate casing and the front casing of the test piece respectively is as follows: The intermediate auxiliary support is installed while maintaining the hoisting state of the test piece, and the height of the support base is gradually adjusted until it fits the intermediate casing of the test piece. During the height adjustment process of the intermediate auxiliary support, the height change of the test piece is monitored by a dial indicator to ensure that the vertical change amount of the intermediate casing of the test piece is not greater than 0.05 mm. At the same time, the levelness of the test piece is checked by a level to avoid the skew of the axis of the test piece. The front auxiliary support is installed according to the same principle.

6. The installation and commissioning method of the coaxial input dual-axis compressor tester according to claim 5, characterized in that, The drive system includes a coaxial gearbox, an external shaft speed increaser, an internal shaft speed increaser, a transmission shaft, and a coupling. The power system includes an external shaft power motor, an internal shaft power motor, and a supporting barring gear device and an encoder. First, the theoretical dimensions of each equipment of the drive system and the power system are initially positioned, and the horizontal, vertical, and axial positions of each equipment are roughly adjusted to ensure that the deviation in each direction is within the compensation range of the coupling. Then, the coupling and the transmission shaft of the drive system respectively drive the external shaft and the internal shaft of the test piece through the barring gear device, and the concentricity of each equipment is checked and adjusted one by one by a laser alignment instrument. Among them, the adjustment sequence for synchronously adjusting the concentricity of each device in the drive system and the power system is as follows: coaxial gearbox, outer shaft speed increaser, outer shaft power motor, inner shaft speed increaser, inner shaft power motor. Specifically, it includes: the concentricity adjustment reference for the coaxial gearbox is the test piece installed on the exhaust duct. When adjusting the concentricity of the coaxial gearbox, only the alignment condition of the outer shaft is used as the evaluation criterion; after completing the concentricity adjustment of the coaxial gearbox, the concentricity of the outer shaft speed increaser and the inner shaft speed increaser are respectively adjusted with the coaxial gearbox as the reference; subsequently, the concentricity of the outer shaft power motor is adjusted with the outer shaft speed increaser as the reference, and the concentricity of the inner shaft power motor is adjusted with the inner shaft speed increaser as the reference.

7. The installation and commissioning method of the coaxial-input dual-axis compressor tester according to claim 6, characterized in that, The auxiliary system includes a lubricating oil system, a hydraulic system, an air system, and a water system. The installation and commissioning process of each auxiliary system includes: S61, ensuring that the supply and return oil pumps of the lubricating oil system operate normally, and the oil supply flow rate, pressure, and temperature meet the lubrication requirements of each device; S62, ensuring that the oil pressure of the hydraulic system is stable and meets the adjustment requirements of the adjustable vane angle of the test piece, the exhaust throttle valve, and the hydraulic valve; S63, ensuring that the air source of the air system supplies air stably, and the pressure and flow rate are adjustable to meet the sealing requirements of the test piece and each device; S64, ensuring that the water supply flow rate and pressure of the water system meet the cooling requirements of each device.

8. The installation and commissioning method of the coaxial-input dual-axis compressor tester according to claim 7, characterized in that The process of conducting no-load running commissioning of the power system and the drive system includes: S71, separately conducting no-load running commissioning of the outer shaft power motor and the inner shaft power motor, verifying the completeness of the speed control function, and verifying the running stability of the motors; S72, jointly conducting no-load running commissioning of the outer shaft power motor and the inner shaft power motor to verify the speed split and linkage control functions; S73, separately conducting no-load running commissioning of the outer shaft power motor, the inner shaft power motor, and the adapted speed increasers to verify the running stability of the speed increasers; S74, conducting no-load running commissioning of the inner shaft power motor, the outer shaft power motor, the adapted speed increasers, and the coaxial gearbox; S75, during the commissioning process, ensure the normal operation of the equipment by detecting the shafting vibration and bearing temperature, and meet the conditions for subsequent load-bearing joint commissioning.

9. The installation and debugging method of a biaxial compressor tester with same-side input according to claim 8, characterized in that: The process of conducting load-bearing joint commissioning includes: S81, running in and increasing the speed along the fan and compressor block points to the design speed, conducting no-load running commissioning of each system, and assessing the running stability of the equipment under load; S82, respectively recording the performance from the fan and compressor block points to the highest efficiency point, evaluating the test data in combination with the test results of the two-shaft compressor tester and the simulation calculation results, and analyzing the test accuracy of the key parameters, where the key parameters include pressure, temperature, flow rate, speed, and torque; S83, respectively recording the performance from the compressor block point to the surge point, verifying the completeness and reliability of the surge forcing, surge retreating, and state recovery functions; S84, respectively adjusting the fan bypass ratio and the speed difference between the inner and outer shafts, recording the performance of the fan and compressor under different matching conditions, and verifying the completeness of the matching characteristic research function.

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