CN114608835A - Multifunctional scaling test bed for testing dynamic characteristics of rotor system shafting - Google Patents
Multifunctional scaling test bed for testing dynamic characteristics of rotor system shafting Download PDFInfo
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- CN114608835A CN114608835A CN202210381158.2A CN202210381158A CN114608835A CN 114608835 A CN114608835 A CN 114608835A CN 202210381158 A CN202210381158 A CN 202210381158A CN 114608835 A CN114608835 A CN 114608835A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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Abstract
A multifunctional scaling test bed for testing the dynamic characteristics of a rotor system shafting belongs to the field of gas turbine dynamic testing, and comprises a test installation platform, a power device, a coupler, a multi-disc pull rod rotor assembly structure, a sliding bearing and supporting device, a thrust bearing and supporting device, a sensor frame and a signal acquisition device, wherein the multi-disc pull rod rotor assembly structure, the sliding bearing and supporting device, the thrust bearing and supporting device, the coupler, the power device and the sensor frame are all installed on the test installation platform, the multi-disc pull rod rotor assembly structure, the sliding bearing and supporting device, the thrust bearing and supporting device, the coupler and the power device are sequentially connected, the sensor frame is installed above one side of the multi-disc pull rod rotor assembly structure, the sensors are all installed on the sliding bearing and supporting device, the thrust bearing and supporting device and the sensor frame, and the sensors are connected with the signal acquisition device, the dynamic characteristic test and analysis can be rapidly and accurately realized for various types of gas turbines.
Description
The technical field is as follows:
the invention belongs to the field of gas turbine dynamics testing, and particularly relates to a multifunctional scaling test bed for testing the dynamic characteristics of a rotor system shafting.
Background art:
the heavy-duty gas turbine has no replaceable function in the field of industrial power generation, and the development of corresponding experimental research has important significance for perfecting the rotor dynamics theory and improving the design level of the gas turbine in China. The modern heavy gas turbine rotor structure mainly adopts a design scheme of a pull rod type multi-disc assembly or integral welding structure, the design scheme comprises a compressor section, a combustion chamber and a turbine section, the shafting structure is complex and large, and due to factors such as safety, feasibility, economic cost and the like, the experimental test and structural adjustment verification are difficult to directly carry out on a prototype machine in the running process of an actual unit in operation.
The gas turbines of different models have different dynamic characteristics, even if different modification designs of the same model are designed, the dynamic characteristics can be greatly changed, and if the gas turbines are designed and processed only by aiming at a certain model set, research limitations exist. Therefore, a set of shafting scaling test bed capable of accurately reflecting the dynamic characteristics of the gas turbine rotor is designed, is used for the work of response prediction, fault analysis, structure optimization design and the like of different types of gas turbine units, and has important strategic significance for promoting the improvement of the design level of the gas turbine industry in China and realizing the autonomous design of the gas turbine shafting structure in the early days.
The invention content is as follows:
the invention designs a multifunctional scaling test bed for verifying the dynamic characteristics of a gas turbine shafting, which can conveniently and quickly perform dynamic response test analysis on gas turbine systems of different types, in order to solve the problems of response verification, fault analysis, structure optimization design and the like of the dynamic characteristics of the heavy gas turbine shafting.
Based on the purpose, the invention adopts the technical scheme that:
a multifunctional scaling test bed for testing the dynamic characteristics of a rotor system shafting comprises a test installation platform, a power device, a coupler, a multi-disc pull rod rotor assembly structure, a sliding bearing and supporting device, a thrust bearing and supporting device, a sensor frame and a signal acquisition device, the multi-disc pull rod rotor assembly structure, the sliding bearing and supporting device, the thrust bearing and supporting device, the coupler, the power device and the sensor frame are all installed on the test installation platform, the multi-disc pull rod rotor assembly structure, the sliding bearing and supporting device, the thrust bearing and supporting device, the coupler and the power device are sequentially connected, the sensor frame is installed above one side of the multi-disc pull rod rotor assembly structure, the sliding bearing and supporting device, the thrust bearing and supporting device and the sensor frame are all provided with sensors, and the sensors are connected with the signal acquisition device.
The multi-disc pull rod rotor assembly structure body adopts a modular design and is integrally divided into a compressor section end shaft, a wheel disc, a middle transition shaft, a turbine section end shaft and a pre-tightening bolt, the compressor section end shaft, the wheel disc, the middle transition shaft, the pre-tightening bolt and the turbine section end shaft are sequentially connected, and a sliding bearing and a supporting device are arranged on the turbine section end shaft.
The sliding bearing and supporting device consists of a sliding bearing upper seat, a sliding bearing base, a sliding bearing baffle and a lifting ring screw, the sliding bearing upper seat and the sliding bearing base are respectively arranged at the upper part and the lower part of the sliding bearing, the lifting ring screw and a ventilation cap are installed at the top of the sliding bearing upper seat, and a sliding bearing assembling positioning groove is formed at the bottom of the sliding bearing base; two side surfaces of the sliding bearing are respectively provided with a sliding bearing baffle.
The thrust bearing and supporting device mainly comprises a thrust bearing baffle, a thrust bearing retainer ring, a four-point thrust bearing and a thrust bearing base, wherein the outer ring of the four-point thrust bearing is connected with the thrust bearing base through the thrust bearing baffle, the thrust bearing retainer ring is arranged between the four-point thrust bearing and the thrust bearing baffle, the thrust bearing baffle is connected with the thrust bearing base through a locking nut, an oil way joint and an assembly counter bore are formed in the upper part of the thrust bearing base, and a thrust bearing assembly positioning groove is formed in the bottom of the thrust bearing base.
The shaft coupling is used for transmitting torque, and the shaft coupling is connected with a turbine section end shaft of the multi-disc pull rod rotor assembly structure and an output shaft of the power device through keys respectively.
The power device is composed of a motor gland, a motor support and a high-voltage rotor electric main shaft, the motor gland and the motor support are respectively installed on the upper portion and the lower portion of the high-voltage rotor electric main shaft, and a motor base assembling positioning groove is formed in the bottom of the motor support.
The sensor frame is mainly used for non-contact measurement of radial vibration quantity in the operation process of the multi-disc pull rod rotor assembly structure, the sensor frame is manufactured by adopting a 45-steel machine, and sensor mounting holes are reserved in the directions of 0 degree, 45 degrees, 90 degrees, 135 degrees and 180 degrees.
The test mounting platform comprises main base station, protection casing slide rail and protection casing, is equipped with the protection casing slide rail on the main base station, sliding connection protection casing on the protection casing slide rail, sets up device mounting hole, assembly constant head tank and base oil gallery on the main base station, and assembly constant head tank number is three.
The sensor frame axially moves along the assembly positioning groove on the test mounting platform, so that the vibration quantity of the shaft, the disc and the coupling at different positions can be measured.
After the technical scheme is adopted, the invention has the following advantages:
1. the multi-disc pull rod rotor adopts a modular design structure, so that the structure of circumferential pull rod rotors of different gas turbines can be conveniently and rapidly designed, and the processing difficulty and the experimental cost are effectively reduced.
2. Each wheel disc is connected and assembled by adopting a pull rod or a bolt, and the design of the pin hole and the spigot structure on each wheel disc effectively ensures the assembly precision.
3. The experiment table can be used for response testing, pull rod detuning fault analysis, unbalance fault analysis, oil film whirling phenomenon testing, structural optimization design and the like of different types of gas turbine units.
Description of the drawings:
FIG. 1 is a schematic structural view of a multifunctional scaling test bed for testing the dynamic characteristics of a gas turbine shafting in an embodiment;
FIG. 2 is a sectional view and a top view of a multifunctional scaling test bed for testing the dynamic characteristics of a gas turbine shafting, wherein a is a sectional view and b is a top view;
FIG. 3 is an assembly view of a multi-disk drawbar rotor configuration according to an embodiment;
FIG. 4 is a schematic view of a wheel disc according to the embodiment, wherein a is a view 1 direction, and b is a view 2 direction;
FIG. 5 is a schematic view of a sliding bearing and supporting device according to an embodiment;
FIG. 6 is a three-dimensional schematic view and a sectional view of an axial thrust bearing and a supporting device according to an embodiment, wherein a is a three-dimensional schematic view and b is a sectional view;
FIG. 7 is a schematic view of an embodiment of a motor and support structure;
FIG. 8 is a schematic diagram of a sensor frame according to an embodiment;
FIG. 9 is a schematic structural view of a test mounting platform according to an embodiment;
the parts with the same reference numbers in the figures are respectively as follows:
1-a multi-disc pull rod rotor assembly structure; 1-1 — compressor section end shaft; 1-2-wheel disk; 1-2-1-through hole of tie rod; 1-2-wheel disc positioning pin hole; 1-2-3-unbalance adjusting holes; 1-2-4-wheel disc assembling convex mouth; 1-2-5-wheel disc assembly notch; 1-3-intermediate transition shaft; 1-4-turbine section end shaft; 1-5-pre-tightening the bolt; 1-6-circumferential pull rod; 2-sliding bearing and supporting device; 2-1 — eye screw; 2-a venting cap; 2-3-sliding bearing upper seat; 2-4-sliding bearing base; 2-5-plain bearing; 2-6-sliding bearing baffle; 2-7-sliding bearing assembly positioning groove; 3-thrust bearing and supporting device; 3-1-oil way joint; 3-2, assembling a counter bore; 3-thrust bearing baffle; 3-4-thrust bearing retainer ring; 3-5-locking nut; 3-6-four-point thrust bearing; 3-7-thrust bearing base; 3-8-thrust bearing assembly positioning groove; 4-a coupling; 5-power device; 5-1-motor gland; 5-2-high-voltage rotor electric main shaft; 5-3-motor support; 5-4, assembling a positioning groove on the motor base; 6-sensor frame; 6-1-sensor gantry beam; 6-2-sensor mounting hole; 7-test mounting platform; 7-1-main base station; 7-2-device mounting holes; 7-3-assembling a positioning groove; 7-4-protective cover sliding rail; 7-5-protective cover; 7-6-base oil return groove.
The specific implementation mode is as follows:
a multifunctional scaling test bed for testing the dynamic characteristics of a rotor system shafting comprises a test mounting platform 7, a power device 5, a coupler 4, a multi-disc pull rod rotor assembly structure 1, a sliding bearing and supporting device 2, a thrust bearing and supporting device 3, a sensor frame 6 and a signal acquisition device, wherein the multi-disc pull rod rotor assembly structure 1, the sliding bearing and supporting device 2, the thrust bearing and supporting device 3, the coupler 4, the power device 5 and the sensor frame 6 are all mounted on the test mounting platform 7, the multi-disc pull rod rotor assembly structure 1, the sliding bearing and supporting device 2, the thrust bearing and supporting device 3, the coupler 4 and the power device 5 are sequentially connected, the sensor frame 6 is mounted above one side of the multi-disc pull rod rotor assembly structure 1, and sensors are mounted on the sliding bearing and supporting device 2, the thrust bearing and supporting device 3 and the sensor frame 6, the sensor is connected with the signal acquisition device. Each part and the device are provided with a uniform installation and positioning interface and can be replaced or adjusted according to an actual design structure.
The multi-disc pull rod rotor assembly structure 1 is characterized in that a body is in a modular design and integrally divided into a compressor section end shaft 1-1, a wheel disc 1-2, a middle transition shaft 1-3, a turbine section end shaft 1-4 and a pre-tightening bolt 1-5, the compressor section end shaft 1-1, the wheel disc 1-2, the middle transition shaft 1-3, the pre-tightening bolt 1-5 and the turbine section end shaft 1-4 are sequentially connected, and a sliding bearing and a supporting device 2 are arranged on the turbine section end shaft 1-4. The end shaft is provided with threads and splines which are respectively used for assembling with the axial thrust bearing and transmitting power torque. The disks are distributed with assembling through holes, shape and position pin holes and unbalance adjusting holes along the circumferential direction, and the disks are assembled together through the assembling through holes by adopting a pull rod or bolt connecting structure. And two end surfaces of each disc are respectively provided with a spigot structure, so that the convenience of rotor structure installation and the maintenance of radial precision of an assembly body are facilitated. The shape and position pin holes are used for ensuring the mounting precision among the discs and bearing tangential load, each disc is evenly provided with 24 unbalance adjusting holes along the circumferential direction, the angle between every two holes is 15 degrees, and shafting unbalance can be added according to requirements. The structure, the number and the position of the wheel discs can be replaced or adjusted on the multi-disc pull rod rotor body, so that the scaling design of various types of gas turbine shafting is realized.
The sliding bearing and supporting device 2 consists of a sliding bearing upper seat 2-3, a sliding bearing base 2-4, a sliding bearing 2-5, a sliding bearing baffle 2-6 and a lifting ring screw 2-1, the upper part and the lower part of the sliding bearing 2-5 are respectively provided with the sliding bearing upper seat 2-3 and the sliding bearing base 2-4, the lifting ring screw 2-1 and a ventilation cap 2-2 are arranged at the top of the sliding bearing upper seat 2-3, and the bottom of the sliding bearing base 2-4 is provided with a sliding bearing assembly positioning groove 2-7; two side surfaces of the sliding bearing 2-5 are respectively provided with a sliding bearing baffle 2-6. The sliding bearing upper seat and the sliding bearing base are cast by cast iron, the oil supply and the oil return pipeline are designed inside according to the structural dimension of the sliding bearing, the hanging ring is arranged above the bearing upper seat, the sliding bearing upper seat and the sliding bearing base are convenient to disassemble and assemble, and the sliding bearing upper seat and the sliding bearing base are connected through the bolt structure and ensure the relative position through the pin holes. The bearing base and the installation experiment platform are positioned through the T-shaped block and are connected and assembled through the fastening bolt.
The thrust bearing and supporting device 3 mainly comprises a thrust bearing baffle plate 3-3, a thrust bearing retainer ring 3-4, a four-point thrust bearing 3-6 and a thrust bearing base 3-7, wherein the outer ring of the four-point thrust bearing 3-6 is connected with the thrust bearing base 3-7 through the thrust bearing baffle plate 3-3, the thrust bearing retainer ring 3-4 is arranged between the four-point thrust bearing 3-6 and the thrust bearing baffle plate 3-3, the thrust bearing baffle plate 3-3 is connected with the thrust bearing base 3-7 through a locking nut 3-5, the upper part of the thrust bearing base 3-7 is provided with an oil way connector 3-1 and an assembly counter bore 3-2, and the bottom of the thrust bearing base 3-7 is provided with a thrust bearing assembly positioning groove 3-8. The thrust bearing base is cast by cast iron, and the thrust bearing baffle and the thrust bearing retainer ring are machined by 45 steel. The inner ring of one side of the four-point thrust bearing is matched with a shaft shoulder of the end shaft of the multi-disk rotor, the inner ring of the other side of the four-point thrust bearing is matched and fixed with threads on the end shaft of the multi-disk rotor through a retraction nut, the outer ring of the four-point thrust bearing is assembled and fixed with the bearing base through a baffle, and the structure prevents the axial float of the multi-disk rotor in the operation process.
The coupler 4 is used for transmitting torque, and the coupler 4 is connected with the turbine section end shafts 1-4 of the multi-disc pull rod rotor assembly structure 1 and the output shaft of the power device 5 through keys.
The power device 5 consists of a motor gland 5-1, a motor support 5-3 and a high-voltage rotor electric main shaft 5-2, the motor gland 5-1 and the motor support 5-3 are respectively arranged at the upper part and the lower part of the high-voltage rotor electric main shaft 5-2, and a motor base assembling positioning groove 5-4 is formed in the bottom of the motor support 5-3. The motor gland and the motor support are cast by cast iron, the structure of the motor gland and the motor support is designed according to the structural size and the axle center height of the high-voltage rotor electric spindle, and the upper part of the motor gland is designed by chamfering and other lightweight designs in order to reduce weight. The motor gland and the motor support, and the motor support and the experiment installation platform are fixedly connected through bolts.
The sensor frame 6 is mainly used for non-contact measurement of radial vibration quantity in the operation process of the multi-disc pull rod rotor assembling structure 1, machining and manufacturing are carried out by adopting a 45-steel machine, and sensor mounting holes 6-2 are reserved in the sensor frame 6 in the directions of 0 degree, 45 degrees, 90 degrees, 135 degrees and 180 degrees.
The test mounting platform 7 comprises a main base station 7-1, a protective cover slide rail 7-4 and a protective cover 7-5, the protective cover slide rail 7-4 is arranged on the main base station 7-1, the protective cover 7-5 is connected to the protective cover slide rail 7-4 in a sliding mode, a device mounting hole 7-2, an assembly positioning groove 7-3 and a base oil return groove 7-6 are formed in the main base station 7-1, and the number of the assembly positioning grooves 7-3 is three. The main base station is cast by cast iron, and the protective cover is welded by 45 steel. The main base station is used for installing and bearing each experimental part, and the base design has 3 assembly positioning grooves for installing and positioning with the sliding bearing base, the four-point bearing base, the motor base and the sensor frame, so that the positioning is carried out through the key-type positioning blocks during the assembly, and the connection is carried out through the bolts. And a base oil return groove is arranged above the main base plate and used for collecting and cooling pressure oil of the sliding bearing and lubricating oil of the rotating part.
The sensor frame 6 axially moves along the assembly positioning groove 7-3 on the test mounting platform 7, so that the vibration quantity of the shaft, the disc and the coupling at different positions can be measured.
Example one
This example is illustrated with respect to the invention in connection with the accompanying drawings, in this disclosure aspects of the invention are described with reference to the drawings, in which a number of illustrated embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It is to be understood that many of the concepts and embodiments described above, as well as those described in greater detail below, may be modified and adapted without departing from the inventive concepts as defined by the appended claims.
Referring to fig. 1 and 2, the invention provides a multifunctional scaling test bed for testing the dynamic characteristics of a rotor system shafting, which comprises a multi-disc pull rod rotor 1, a sliding bearing and supporting device 2, a thrust bearing and supporting device 3, a coupler 4, a power device 5, a sensor frame 6, a test mounting platform 7 and a protective cover 7-5, wherein the sliding bearing and supporting device 2, the thrust bearing and supporting device 3, the power device 5 and the sensor frame 6 are positioned through a key-type positioning block and an assembly positioning groove 7-3 and are connected with the test mounting platform 7 through bolts, and each supporting device can move along the axial direction and is used for adjusting the supporting span of different scaling machine type rotors. The high-voltage rotor electric main shaft 5-2 is connected with the multi-disc pull rod rotor through the coupler 4 and used for power torque transmission.
Referring to fig. 3 and 4, the multi-disc pull rod rotor 1 comprises a compressor section end shaft 1-1, a wheel disc 1-2, a middle transition shaft 1-3, a turbine section end shaft 1-4, a pre-tightening bolt 1-5 and a circumferential pull rod 1-6; the wheel disc 1-2 comprises a pull rod through hole 1-2-1, a wheel disc positioning pin hole 1-2-2, an unbalance amount adjusting hole 1-2-3, a wheel disc assembling convex opening 1-2-4 and a wheel disc assembling concave opening 1-2-5. The multi-disc pull rod rotor structure body is in a modular design, unbalance adjusting holes are distributed in each disc in the circumferential direction, a spigot assembling mode is adopted, when each wheel disc is assembled, an assembling convex opening 1-2-4 of a previous wheel disc is matched with an assembling concave opening 1-2-5 of a next wheel disc, a pin shaft penetrates through a wheel disc positioning pin hole 1-2-2 of two adjacent wheel discs, and finally a circumferential pull rod 1-6 penetrates through a pull rod through hole 1-2-1 to be screwed with a pre-tightening bolt 1-5 according to a certain pre-tightening force, so that the multi-disc pull rod rotor structure is assembled. The position and the structure of the wheel disc are replaced and adjusted, so that the scaling design of various types of gas turbine shafting can be realized.
Referring to fig. 5, the sliding bearing and supporting device 2 comprises an eyebolt 2-1, a vent cap 2-2, a sliding bearing upper seat 2-3, a sliding bearing base 2-4, a sliding bearing 2-5, a sliding bearing baffle 2-6 and a sliding bearing assembling positioning groove 2-7. The lifting ring screw 2-1 is used for hoisting and replacing the sliding bearing and the supporting device, the ventilation cap 2-2 is used for adjusting the working condition of pressure oil, the upper seat 2-3 of the sliding bearing is connected with the base 2-4 of the sliding bearing through a bolt, the sliding bearing 2-5 is coaxially installed with the baffle 2-6 of the sliding bearing, the whole sliding bearing and the supporting device 2 are matched with the assembling positioning groove 7-3 of the test installation platform through the assembling positioning groove 2-7 of the sliding bearing, and a bolt test and the assembly of the test installation platform 7 are used.
Referring to FIG. 6, the thrust bearing and supporting device 3 comprises an oil way connector 3-1, an assembly counter bore 3-2, a thrust bearing baffle 3-3, a thrust bearing retainer ring 3-4, a locking nut 3-5, a four-point thrust bearing 3-6, a thrust bearing base 3-7 and a thrust bearing assembly positioning groove 3-8. The inner ring of one side of the four-point thrust bearing 3-6 is matched with the shaft shoulder of the turbine section end shaft 1-4 of the multi-disc rotor, the inner ring of the other side is matched and fixed with the thread of the turbine section end shaft 1-4 of the multi-disc rotor through a locking nut 3-5, the outer ring of the four-point thrust bearing 3-6 is assembled and fixed with the thrust bearing base 3-7 through a baffle 3-3, and the structure prevents the axial movement of the multi-disc rotor in the operation process.
Referring to fig. 7, the power device 5 comprises a motor gland 5-1, a high-voltage rotor electric spindle 5-2, a motor support 5-3 and a motor base assembling positioning groove 5-4. The motor gland 5-1, the high-voltage rotor electric spindle 5-2 and the motor support 5-3 are connected through bolts, the whole power device 5 is matched with the assembling positioning groove 7-3 of the test installation platform through the motor base assembling positioning groove 5-4, and a bolt test is used for assembling the test installation platform 7.
Referring to fig. 8, sensor mounting holes are reserved in the sensor frame 6 in the directions of 0 °, 45 °, 90 °, 135 ° and 180 °. The sensor frame 6 can axially move along the T-shaped groove on the test mounting platform, so that the vibration quantity of the shaft, the disc and the coupling at different positions can be measured.
Referring to fig. 9, the test mounting platform 7 comprises a main base station 7-1, a device mounting hole 7-2, an assembly positioning groove 7-3, a protective cover slide rail 7-4, a protective cover 7-5 and a base oil return groove 7-6. The test mounting platform 7 is provided with three assembly positioning grooves 7-3 for positioning, mounting and fixing the experimental device, and the assembly positioning grooves can meet the requirement of later module expansion. Threaded holes are reserved on the surface of the main base 7-1 and used for mounting a special experimental device. The protective cover 7-5 can axially slide along the protective cover slide rail 7-4, and when a rotor test is carried out, the protective cover is moved to the wheel disc and is fixed through the locking device. The oil return grooves 7-6 are used for cooling and collecting and returning pressure oil and lubricating oil.
In summary, according to the multifunctional scale test bed for testing the dynamic characteristics of the shafting of the rotor system, the multi-disc pull rod rotor adopts a modular design structure, so that the structure of circumferential pull rod rotors of different types of gas turbines can be conveniently and rapidly designed, and the processing difficulty and the experimental cost are effectively reduced; each wheel disc is connected and assembled by adopting a pull rod or a bolt, and the design of a pin hole and a spigot structure on each wheel disc effectively ensures the assembly precision; the experiment table can be used for response testing, pull rod detuning fault analysis, unbalance fault analysis, oil film whirling phenomenon testing, structural optimization design and the like of different types of gas turbine units.
Claims (9)
1. A multi-functional scaling test bench for rotor system shafting dynamic characteristic test which characterized in that: the device comprises a test mounting platform (7), a power device (5), a coupler (4), a multi-disc pull rod rotor assembly structure (1), sliding bearings and supporting devices (2), a thrust bearing and supporting device (3), a sensor frame (6) and a signal acquisition device, wherein the multi-disc pull rod rotor assembly structure (1), the sliding bearings and supporting devices (2), the thrust bearing and supporting devices (3), the coupler (4), the power device (5) and the sensor frame (6) are all mounted on the test mounting platform (7), the multi-disc pull rod rotor assembly structure (1), the sliding bearings and supporting devices (2), the thrust bearing and supporting devices (3), the coupler (4) and the power device (5) are sequentially connected, the sensor frame (6) is mounted above one side of the multi-disc pull rod rotor assembly structure (1), and the sliding bearings and supporting devices (2), Sensors are arranged on the thrust bearing and supporting device (3) and the sensor frame (6) and are connected with the signal acquisition device.
2. The multifunctional scaling test bed for the dynamic characteristic test of the shafting of the rotor system as claimed in claim 1, wherein: the multi-disc pull rod rotor assembly structure (1) is characterized in that a body is in a modular design and integrally divided into a compressor section end shaft (1-1), a wheel disc (1-2), a middle transition shaft (1-3), a turbine section end shaft (1-4) and a pre-tightening bolt (1-5), the compressor section end shaft (1-1), the wheel disc (1-2), the middle transition shaft (1-3), the pre-tightening bolt (1-5) and the turbine section end shaft (1-4) are sequentially connected, and a sliding bearing and a supporting device (2) are arranged on the turbine section end shaft (1-4).
3. The multifunctional scaling test bed for the dynamic characteristic test of the shafting of the rotor system as claimed in claim 1, wherein: the sliding bearing and supporting device (2) consists of a sliding bearing upper seat (2-3), a sliding bearing base (2-4), a sliding bearing (2-5), a sliding bearing baffle plate (2-6) and a lifting eye screw (2-1), the upper part and the lower part of the sliding bearing (2-5) are respectively provided with the sliding bearing upper seat (2-3) and the sliding bearing base (2-4), the lifting eye screw (2-1) and a ventilation cap (2-2) are installed at the top of the sliding bearing upper seat (2-3), and a sliding bearing assembling positioning groove (2-7) is formed at the bottom of the sliding bearing base (2-4); two side surfaces of the sliding bearing (2-5) are respectively provided with a sliding bearing baffle (2-6).
4. The multifunctional scaling test bed for the dynamic characteristic test of the shafting of the rotor system as claimed in claim 1, wherein: the thrust bearing and supporting device (3) mainly comprises a thrust bearing baffle plate (3-3), a thrust bearing retainer ring (3-4), a four-point thrust bearing (3-6) and a thrust bearing base (3-7), the outer ring of the four-point thrust bearing (3-6) is connected with a thrust bearing base (3-7) through a thrust bearing baffle (3-3), a thrust bearing retainer ring (3-4) is arranged between the four-point thrust bearing (3-6) and the thrust bearing baffle (3-3), the thrust bearing baffle (3-3) is connected with the thrust bearing base (3-7) through a locking nut (3-5), an oil way connector (3-1) and an assembly counter bore (3-2) are arranged at the upper part of the thrust bearing base (3-7), and a thrust bearing assembly positioning groove (3-8) is arranged at the bottom of the thrust bearing base (3-7).
5. The multifunctional scaling test bed for the dynamic characteristic test of the shafting of the rotor system as claimed in claim 1 or 2, wherein: the shaft coupling (4) is used for transmitting torque, and the shaft coupling (4) is connected with the turbine section end shafts (1-4) of the multi-disc pull rod rotor assembly structure (1) and the output shaft of the power device (5) through keys.
6. The multifunctional scaling test bed for the dynamic characteristic test of the shafting of the rotor system as claimed in claim 1, wherein: the power device (5) is composed of a motor gland (5-1), a motor support (5-3) and a high-voltage rotor electric spindle (5-2), the motor gland (5-1) and the motor support (5-3) are respectively installed on the upper portion and the lower portion of the high-voltage rotor electric spindle (5-2), and a motor base assembling positioning groove (5-4) is formed in the bottom of the motor support (5-3).
7. The multifunctional scaling test bed for the dynamic characteristic test of the shafting of the rotor system as claimed in claim 1, wherein: the sensor frame (6) is mainly used for non-contact measurement of radial vibration quantity in the operation process of the multi-disc pull rod rotor assembling structure (1) and is machined and manufactured by adopting a 45-steel machine, and sensor mounting holes (6-2) are reserved in the sensor frame (6) in the directions of 0 degree, 45 degrees, 90 degrees, 135 degrees and 180 degrees.
8. The multifunctional scaling test bed for the dynamic characteristic test of the shafting of the rotor system as claimed in claim 1, wherein: the test mounting platform (7) is composed of a main base station (7-1), a protective cover sliding rail (7-4) and a protective cover (7-5), the protective cover sliding rail (7-4) is arranged on the main base station (7-1), the protective cover sliding rail (7-4) is connected with the protective cover (7-5) in a sliding mode, a device mounting hole (7-2), an assembly positioning groove (7-3) and a base oil return groove (7-6) are formed in the main base station (7-1), and the number of the assembly positioning grooves (7-3) is three.
9. The multifunctional scaling test bed for the dynamic characteristic test of the shafting of the rotor system as claimed in claim 1 or 8, wherein: the sensor frame (6) moves axially along the assembly positioning groove (7-3) on the test mounting platform (7) to realize the measurement of the vibration quantity of the shaft, the disc and the coupling at different positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210381158.2A CN114608835A (en) | 2022-04-12 | 2022-04-12 | Multifunctional scaling test bed for testing dynamic characteristics of rotor system shafting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210381158.2A CN114608835A (en) | 2022-04-12 | 2022-04-12 | Multifunctional scaling test bed for testing dynamic characteristics of rotor system shafting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114608835A true CN114608835A (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210381158.2A Pending CN114608835A (en) | 2022-04-12 | 2022-04-12 | Multifunctional scaling test bed for testing dynamic characteristics of rotor system shafting |
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| Country | Link |
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| CN (1) | CN114608835A (en) |
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