CN112284749A - Comprehensive experiment platform for testing high-temperature components - Google Patents
Comprehensive experiment platform for testing high-temperature components Download PDFInfo
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- CN112284749A CN112284749A CN202010926270.0A CN202010926270A CN112284749A CN 112284749 A CN112284749 A CN 112284749A CN 202010926270 A CN202010926270 A CN 202010926270A CN 112284749 A CN112284749 A CN 112284749A
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
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- 238000010438 heat treatment Methods 0.000 claims abstract description 118
- 230000003068 static effect Effects 0.000 claims abstract description 83
- 239000013307 optical fiber Substances 0.000 claims abstract description 61
- 230000005284 excitation Effects 0.000 claims abstract description 60
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 18
- 238000004088 simulation Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
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- 238000013461 design Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 11
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- 238000005457 optimization Methods 0.000 abstract description 6
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- 239000000835 fiber Substances 0.000 description 3
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- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
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- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
Abstract
The invention provides a comprehensive experiment platform for testing a high-temperature part, which relates to the technical field of electromechanical detection and comprises a rotating device, an excitation device, a static device, a heating device and a testing device, wherein the heating device comprises a heating box and a heating member, the rotating device comprises a component to be tested, a rotating shaft, a transmission belt pulley and a motor, the excitation device comprises an excitation rod, a first cantilever beam and a vibration exciter, the static device comprises a static rod, a second cantilever beam and a weight, and the testing device comprises an optical fiber sensor, a high-temperature-resistant strain gauge, a transmission optical fiber, an optical fiber rotary connector, a lead and a via hole electric slip ring. The comprehensive experiment platform for testing the high-temperature component can simulate the high-temperature working conditions of the component to be tested in the rotating, exciting and static environments, can detect the distribution conditions of the rotating, exciting and static strain at high temperature, provides technical data for research and development and optimization of mechanical component design, and has good safety protection performance on the high-temperature environment of the detection component and high detection accuracy.
Description
Technical Field
The invention relates to the technical field of electromechanical detection,
in particular, the present invention relates to a comprehensive experimental platform for testing high temperature components.
Background
The aero-engine/gas turbine is an important mark for embodying national industrial foundation, scientific and technological level, economy and national defense strength, is key basic power equipment for industries such as aviation, ships, electric power and the like, and is known as 'pearl on crown' in manufacturing industry. One prominent manifestation in the design and manufacturing level of aircraft engines/gas turbines is: the advanced test technology support, advanced and reliable aero-engine/gas turbine are realized through design, development, test, improvement, use, perfection of multiple cycles, multiple times of design and manufacture, and test analysis and perfection of multiple wheel parts and complete machines. For modern aeroengines/gas turbines, an accurate heat transfer analysis technology and a reliable state parameter test verification technology are the basis for meeting the requirements of long service life and high reliability under a high-temperature condition.
For example, chinese patent invention patent CN108519235A discloses a pneumatic turbine driving test bed, which includes a rotor system, a power system, a lubrication system, a test system, a safety system, an intermediate bearing between the inner and outer rotors, the outer rotor is driven by the pneumatic turbine, the control system is a feedback control system, the pneumatic turbine mounted on the outer rotor is driven by compressed air, the compressed air provided by the air compressor enters the pressure stabilizing box, flows through the pressure regulating valve and then flows out of the nozzle to impact the pneumatic turbine to drive it to rotate, the outer rotor speed is detected by the speed transmitter and then fed back to the speed controller, the flow of the compressed air is regulated by controlling the opening of the pressure regulating valve to control the speed of the outer rotor, and the structure combining a squirrel cage elastic support and an elastic ring type squeeze film damper is adopted in the support structure to increase the; chinese patent invention patent CN109540435A relates to blade fatigue test technical field, provides a blade fatigue test system of mechanical and acoustic coupling excitation, includes: the blade comprises a blade clamping system of a clamp, an electromagnetic excitation system of an electromagnetic vibration table, a sound wave excitation system of a signal generator, a first power amplifier and a loudspeaker, a sound wave test system of a microphone, a second power amplifier and a first signal analysis system, and a stress test system of a strain gauge, a dynamic strain gauge and a second signal analysis system; the invention discloses a Chinese patent CN111307467A, which relates to a method for preparing and installing a loading block of a reverse thrust cascade static test device of an aeroengine, and comprises the following steps: designing and manufacturing a cascade airfoil mold according to a reverse thrust cascade to be tested; thermoplastic plastic is adopted to be softened and then filled into the blade grid airfoil mold; forming a preloading block after the thermoplastic plastics are initially cooled and solidified, and taking out the preloading block; filling the preloading block into one grid of the reverse thrust blade grid to be tested, and pressing the preloading block to make the preloading block completely fit with the blade airfoil profile of the grid; forming a loading block after the preloading block is completely cooled and solidified; and (3) sticking the exposed surface of the loading block on the reverse thrust blade cascade to a metal hook of a static test device.
However, at present, the testing technology developed by the aeroengine/gas turbine in China lacks the testing technology and device aiming at the rotating, exciting and static parts at high temperature, cannot directly detect the temperature, stress/strain and other parameters of the part to be tested under the working environment, and at least three devices are required to be used for carrying out simulation testing on the parts under the working conditions of rotating, exciting and static.
Therefore, in order to solve the above problems, it is necessary to design a comprehensive experimental platform for testing high-temperature components reasonably.
Disclosure of Invention
The invention aims to provide a comprehensive experiment platform for testing high-temperature components, which can simulate the high-temperature working conditions of components to be tested in rotating, exciting and static environments, can detect the distribution conditions of rotating, exciting and static strain at high temperature, provides technical data for the research and development and optimization of the design of mechanical components, particularly blade components, and has good safety protection on the high-temperature environment of the detection components and high detection accuracy.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the utility model provides a comprehensive experiment platform for high temperature component test, includes rotary device, excitation device, static device, heating device and testing arrangement, heating device include the heating cabinet and set up in heating member in the heating cabinet, rotary device including await measuring component, pivot, with driving pulley that the pivot is connected and with the motor that driving pulley is connected, the pivot is close to the one end of the component that awaits measuring has at least a part to be located in the heating cabinet, excitation device is including having at least a part to be located excitation pole in the heating cabinet, set up in the excitation pole is close to the first cantilever beam of the one end of heating cabinet with set up in the excitation pole is kept away from the vibration exciter of the one end of heating cabinet, static device is including having at least a part to be located static pole in the heating cabinet, set up in the static pole is close to the second cantilever beam of the one end of heating cabinet and set up in the static pole is kept away from the one end of heating cabinet The testing device comprises an optical fiber sensor, a high-temperature-resistant strain gauge for calibrating the optical fiber sensor, an optical fiber rotary connector electrically connected with the optical fiber sensor through a transmission optical fiber, and a via hole electric slip ring connected with the high-temperature-resistant strain gauge through a lead.
Preferably, the testing device further comprises a demodulator electrically connected with the optical fiber rotary connector and the via hole electric slip ring, and a computer electrically connected with the demodulator.
Preferably, the heating box is provided with shaft holes for the rotating shaft, the exciting rod and the static rod to pass through conveniently.
Preferably, the number of the axial holes is at least one.
Preferably, the driving pulley is connected to a driving pulley connected to the motor shaft via a belt.
Preferably, the rotating shaft is internally provided with a cooling cavity and a signal transmission cavity, the cooling cavity is provided with a cooling water inlet and a cooling water outlet, and the cooling water outlet is provided with a sealing flange.
Preferably, the rotating shaft is connected to the support table through a bearing seat and a cooling water seal ring, and the cooling water seal ring is provided with an inlet and an outlet.
Preferably, the element to be tested is mounted on the rotating shaft through a wheel disc.
Preferably, the rotating shaft is connected to the driving pulley through a coupling.
Preferably, heat insulation flanges are arranged at the joints of the excitation rod and the static rod and the heating box.
Preferably, one end of the excitation rod, which is close to the heating box, is connected with the first cantilever beam through a threaded hole, the excitation rod is mounted on the support table through an excitation support fixed pulley, and a cooling copper pipe is arranged on the excitation rod.
Preferably, one end of the static rod, which is close to the heating box, is connected with the second cantilever beam through a threaded hole, the static rod is mounted on the support table through a static support fixed pulley, a cooling water tank is arranged on the static rod, and the weight is connected with one end, which is far away from the heating box, of the static rod through a steel wire rope.
Preferably, the heating elements are U-shaped silicon-molybdenum rods, the U-shaped silicon-molybdenum rods are arranged at the top of the heating box, and the number of the heating elements is at least one.
The comprehensive experiment platform for testing the high-temperature components has the advantages that:
the high-temperature working conditions of the rotating, exciting and static force components to be tested can be simulated, high-temperature and dynamic-strain or high-temperature and static-strain coupled test environments and calibration conditions are provided for the optical fiber sensor, the distribution conditions of the rotating, exciting and static-strain at high temperature can be detected, and technical data are provided for research and development and optimization of mechanical parts, particularly blade part design, so that the high-temperature dynamic strain test device has important significance for deepening the mechanical behavior of high-temperature moving parts and improving the design of an aeroengine/gas turbine;
a cooling water circulation flow channel is arranged in the rotating shaft, so that the high-temperature environment of the heating box can be borne, and the damage of external elements caused by high-temperature conduction can be effectively avoided;
the exciting rod and the static rod are respectively provided with the cooling copper pipe and the cooling water tank, so that the high-temperature environment of the heating box can be borne, and the damage of external elements caused by high-temperature conduction can be effectively avoided;
the high-temperature sealing plug is arranged at the opening of the heating box, and when the high-temperature sealing plug is not needed, the hole can be sealed by the standby high-temperature sealing plug to be used as the heating box.
Drawings
Fig. 1 is a schematic structural diagram of a heating device and a rotating device according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of the connection between the detecting device and the rotating device according to an embodiment of the present invention.
FIG. 3 is a schematic view of a spindle according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a heating device and an excitation device according to another embodiment of the present invention.
Figure 5 is a schematic view of a first cantilevered beam in another embodiment of the present invention.
Fig. 6 is a schematic structural view of a heating system and a static system according to still another embodiment of the present invention.
FIG. 7 is a schematic view of a second cantilever beam in accordance with yet another embodiment of the present invention;
in the figure: 1. a heating box; 2. a heating member; 3. a device under test; 4. a bearing seat; 5. a cooling water seal ring; 6. a rotating shaft; 61. a cooling chamber; 62. a signal transmission cavity; 7. a coupling; 8. a via electrical slip ring; 9. a drive pulley; 91. a driving pulley; 10. an optical fiber rotary connector; 11. a support table; 12. a motor; 13. a computer; 14. a demodulator; 15. an optical fiber sensor; 16 a transmission fiber; 17. a high temperature resistant strain gauge; 18. a cooling water inlet; 19. a cooling water outlet; 20. a first cantilever beam; 21. a heat insulation flange plate; 22. an excitation rod; 23. supporting the fixed pulley by vibration excitation; 24. cooling the copper pipe; 25. a vibration exciter; 26. a wire; 27. a second cantilever beam; 28. a static lever; 29. a static force supporting fixed pulley; 30. a cooling water tank; 31. a wire rope; 32. and (4) weighing.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the modules and steps set forth in these embodiments and steps do not limit the scope of the invention unless specifically stated otherwise.
Meanwhile, it should be understood that the flows in the drawings are not merely performed individually for convenience of description, but a plurality of steps are performed alternately with each other.
It should be noted that "head", "tail", "above" and "below" are used herein for convenience of description and understanding only, and do not describe a fixed arrangement direction of the present application.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and systems known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
The first embodiment is as follows: as shown in fig. 1 to 7, which are only one embodiment of the present invention, a comprehensive experiment platform for testing a high-temperature component includes a rotating device, an excitation device, a static device, a heating device and a testing device, wherein the heating device includes a heating box 1 and a heating member 2 disposed in the heating box 1, the rotating device includes a component to be tested 3, a rotating shaft 6, a driving pulley 9 connected to the rotating shaft 6, and a motor 12 connected to the driving pulley 9, at least a portion of one end of the rotating shaft 6 close to the component to be tested 3 is disposed in the heating box 1, the excitation device includes an excitation rod 22 at least a portion of which extends into the heating box 1 during a high-temperature excitation test, a first cantilever beam 20 disposed at one end of the excitation rod 22 close to the heating box 1, and an excitation vibrator 25 disposed at one end of the excitation rod 22 away from the heating box 1, the static device comprises a static rod 28, a second cantilever beam 27 and a weight 32, wherein at least one part of the static rod 28 extends into the heating box 1 during high-temperature static test, the second cantilever beam 27 is arranged at one end, close to the heating box 1, of the static rod 28, the weight 32 is arranged at one end, far away from the heating box 1, of the static rod 28, and the test device comprises an optical fiber sensor 15, a high-temperature-resistant strain gauge 17 used for calibrating the optical fiber sensor 15, an optical fiber rotary connector 10 electrically connected with the optical fiber sensor 15 through a transmission optical fiber 16 and a via hole electric slip ring 8 connected with the high-temperature-resistant strain gauge 17 through a lead 26.
According to the invention, the heating device can heat the element to be detected, the rotating device, the excitation device and the static device are mutually independent simulation parts which respectively simulate the working conditions of rotation, excitation and static of the element to be detected at high temperature, and finally the testing device acquires and tests data simulating the working conditions of rotation, excitation and static of the element to be detected at high temperature.
The test method comprises the steps of firstly simulating the test of a high-temperature component under a rotating working condition, and comprises a rotating device, a heating device and a testing device, wherein the heating device comprises a heating box 1 and a heating part 2 arranged in the heating box 1, the rotating device comprises an element to be tested 3, a rotating shaft 6, a driving belt wheel 9 connected with the rotating shaft 6 and a motor 12 connected with the driving belt wheel 9, at least one part of one end, close to the element to be tested 3, of the rotating shaft 6 is located in the heating box 1, the testing device comprises an optical fiber sensor 15, a high-temperature-resistant strain gauge 17 used for calibrating the optical fiber sensor 15, an optical fiber rotating connector 10 electrically connected with the optical fiber sensor 15 through a transmission optical fiber 16, and a via hole electric slip ring 8 connected with the high-temperature-resistant strain gauge 17 through a lead. Heating member 2 heats temperature in the heating cabinet 1 for after setting up and stretching into the component 3 that awaits measuring in the heating cabinet 1 in the pivot 6 and receiving the heating, rotate under the drive of pivot 6, driving pulley 9 plays the effect that drives pivot 6 work under the drive of motor 12, testing arrangement's optical fiber sensor 15 with be used for demarcating optical fiber sensor 15's high temperature resistant foil gage 17 all sets up on the component 3 that awaits measuring, acquires the component 3 that awaits measuring and meets an emergency signal when rotating under the high temperature, and carries out data acquisition to optical fiber rotary connector 10 and via hole electric slip ring 8 through transmission optic fibre 16 and wire 26 transmission respectively with the signal.
And then simulating the test of the high-temperature component under the excitation working condition, wherein the test comprises a rotating device, an excitation device and a test device, the heating device comprises a heating box 1 and a heating element 2 arranged in the heating box 1, the excitation device comprises an excitation rod 22 at least partially positioned in the heating box 1, a first cantilever beam 20 arranged at one end of the excitation rod 22 close to the heating box 1 and an excitation vibrator 25 arranged at one end of the excitation rod 22 far away from the heating box 1, and the test device comprises an optical fiber sensor 15, a high-temperature-resistant strain gauge 17 for calibrating the optical fiber sensor 15, an optical fiber rotary connector 10 electrically connected with the optical fiber sensor 15 through a transmission optical fiber 16 and a via hole electric slip ring 8 connected with the high-temperature-resistant strain gauge 17 through a lead 26. The first cantilever beam 20 is arranged at one end of the exciting rod 22 extending into the heating box 1, the exciting environment of the first cantilever beam 20 is simulated through the exciter 25 at the other end of the exciting rod 22 under the high-temperature heating environment, at the moment, the optical fiber sensor 15 of the testing device and the high-temperature-resistant strain gauge 17 for calibrating the optical fiber sensor 15 are both arranged on the surface of the variable cross section of the first cantilever beam 20, strain signals when the first cantilever beam 20 is excited at high temperature are obtained, and the signals are respectively transmitted to the optical fiber rotary connector 10 and the via hole electric slip ring 8 through the transmission optical fiber 16 and the lead 26 to obtain data.
Finally, the test of the simulation high temperature part under the quiet power operating mode, including rotary device, quiet power device and testing arrangement, heating arrangement includes heating cabinet 1 and sets up in heating member 2 in the heating cabinet 1, quiet power device is including at least partly being located quiet power pole 28 in the heating cabinet 1, set up in quiet power pole 28 is close to the second cantilever beam 27 of the one end of heating cabinet 1 and set up in quiet power pole 28 keeps away from the weight 32 of the one end of heating cabinet 1, testing arrangement includes optical fiber sensor 15, is used for demarcating optical fiber sensor 15's high temperature resistant strain gauge 17, through transmission optical fiber 16 with optical fiber sensor 15 electricity is connected optical fiber rotary connector 10 and through wire 26 with the via hole electric slip ring 8 that high temperature resistant strain gauge 17 is connected. The second cantilever beam 27 is arranged at one end of the static rod 28 extending into the heating box 1, in a high-temperature heating environment, a weight 32 at the other end of the static rod 28 applies static force to the second cantilever beam 27 to simulate the high-temperature static environment, at the moment, the optical fiber sensor 15 of the testing device and the high-temperature-resistant strain gauge 17 used for calibrating the optical fiber sensor 15 are arranged on the surface of the variable cross section of the second cantilever beam 27 to obtain a strain signal when the first cantilever beam 20 is excited at high temperature, and the signal is transmitted to the optical fiber rotary connector 10 and the via hole electric slip ring 8 through the transmission optical fiber 16 and the lead 26 respectively to obtain data.
The element 3 to be tested is a motor rotor blade, and the first cantilever beam 20 and the second cantilever beam 27 may be provided with motor components such as a motor rotor blade, screws, reinforcing ribs and the like.
It should be noted that the rotating device, the exciting device and the static device are all independent from each other, after a single component to be tested is heated in the heating device to become a high-temperature component, the rotating device, the exciting device or the static device is used for rotating, exciting or static environment simulation, in addition, the simulation working condition of one of the three devices of the rotating device, the exciting device and the static device can be only received in one time period, the simulation data is obtained, and the three components to be tested can also be arranged in the three devices of the rotating device, the exciting device and the static device respectively for simulation working conditions.
In addition, the rotating device, the exciting device and the static device can be independent of the heating device, only when the simulation condition of the component at high temperature needs to be simulated, the rotating shaft 6, the exciting rod 22 or the static rod 28 can be extended into the heating box 1, for example, when the rotating device is installed and extended into the heating box 1, the exciting device and the static device can be extended into the heating box 1 or not extended into the heating box 1, when the exciting device simulates the high-temperature excitation condition, one end of the exciting rod 22, which is provided with the first cantilever beam 20, is extended into the heating box 1, and when the static device simulates the high-temperature excitation condition, one end of the static rod 28, which is provided with the second cantilever beam 27, is extended into the heating box 1.
And the optical fiber rotary connector 10 and the via hole electric slip ring 8 of the testing device are arranged outside the heating device, so that high-temperature interference of testing data is avoided, and the transmission optical fiber 16 and the lead 26 play a role in leading out signals of the optical fiber sensor 15 and the high-temperature-resistant strain gauge 17 arranged in the heating device to the optical fiber rotary connector 10 and the via hole electric slip ring 8 arranged outside the heating device. The testing device also comprises a demodulator 14 electrically connected with the optical fiber rotary connector 10 and the via hole electric slip ring 8, and a computer 13 electrically connected with the demodulator 14. That is, the demodulator 14 interprets the electrical signals transmitted to the optical fiber rotary connector 10 and the via hole electrical slip ring 8, and then sends the interpreted signals to the computer 13, so as to conveniently and intuitively acquire monitoring data.
Meanwhile, the rotating shaft 6 is connected to the support table 11 through the bearing seat 4 and the cooling water sealing ring 5, the cooling water sealing ring 5 is provided with an inlet and an outlet, and the cooling water sealing ring 5 plays a role in cooling the rotating shaft 6; the excitation rod 22 is provided with a cooling copper pipe 24, and the cooling copper pipe 24 plays a role in cooling the excitation rod 22; the static lever 28 is provided with a cooling water tank 30, and the cooling water tank 30 plays a role in cooling the static lever 28; therefore, the test device is prevented from being influenced by high temperature and even damaged, and the detection accuracy is high.
It should be noted that the above three simulation condition devices may be performed simultaneously, that is, the three simulation systems are turned on simultaneously, and the three components of the same specification are subjected to the high-temperature rotation, excitation and static condition simulation, respectively.
The device can also be independently tested in a certain way, the parts to be tested can be sequentially placed on the rotating device, the exciting device and the static device, the working condition simulation of rotation, excitation and static at high temperature is sequentially carried out, and different strain data of a single part are detected. Here, three sets of data may be acquired by using three test apparatuses, respectively, or three data acquisitions may be performed sequentially by one test apparatus.
In a word, the high-temperature component can simulate the high-temperature working conditions of the rotating, exciting and static to-be-tested elements in the heating environment of the heating device, provide a high-temperature and dynamic-strain or high-temperature and static-strain coupled test environment and calibration conditions for the optical fiber sensor, can detect the distribution conditions of the rotating, exciting and static strain at high temperature, and provide technical data for research and development and optimization of the design of mechanical components, particularly blade components, so that the high-temperature component has important significance for deepening the mechanical behavior of high-temperature moving components and improving the design of aeroengines/gas turbines.
The comprehensive experiment platform for testing the high-temperature components can simulate the high-temperature working conditions of the components to be tested in the rotating, exciting and static environments, can detect the distribution conditions of the rotating, exciting and static strain at high temperature, provides technical data for research and development and optimization of the design of mechanical components, particularly blade components, and has good safety protection performance and high detection accuracy for the high-temperature environment of the detection components.
Second embodiment, as also shown in fig. 1 to 7, which is only one embodiment of the present invention, in the comprehensive experiment platform for testing high-temperature components, the heating box 1 is provided with shaft holes for conveniently passing the rotating shaft 6, the exciting rod 22 and the static rod 28. The number of the shaft holes is at least one, and generally, the number of the shaft holes is three, and the rotating shaft 6, the exciting lever 22 and the static lever 28 are respectively inserted into the heating box 1 through one shaft hole to facilitate the simulation test.
Generally speaking, the external diameter of pivot 6 approximately equals the internal diameter in shaft hole, and pivot 6 just rotates in the shaft hole, and the shaft hole plays spacing effect, and the shaft hole also can be plugged up to pivot 6 simultaneously, avoids heat escape in heating cabinet 1.
Here, a heat insulating flange 21 is provided outside the shaft hole. Generally speaking, the exciting rod 22 and the static rod 28 pass through the shaft hole, and the heat insulation flange 21 which is coaxial with the exciting rod 22 or the static rod 28 is arranged outside the shaft hole, so that the outside of the shaft hole can be blocked, and the heat in the heating box 1 can be prevented from escaping.
And a cooling cavity 61 and a signal transmission cavity 62 are arranged in the rotating shaft 6, the cooling cavity 61 is provided with a cooling water inlet 18 and a cooling water outlet 19, and the cooling water outlet 19 is provided with a sealing flange. Cooling water flows in the cooling cavity 61 to cool the rotating shaft 6, and when the sealing flange is blocked, the cooling water cannot flow; the signal transmission cavity 62 is for facilitating the transmission of signals from the transmission fiber 16 and the lead 26.
And the element to be tested 3 is installed on the rotating shaft 6 through the wheel disc, so that the installation stability of the element to be tested 3, namely the rotating blade, is ensured, and the working condition effect is better when the rotating is simulated.
In the heating device, the heating elements 2 are U-shaped silicon-molybdenum rods and are arranged at the inner top of the heating box 1, the number of the heating elements 2 is at least one, the heating effect is better, and the temperature in the heating box 1 can be controlled by changing the heating power of the heating elements 2.
In the rotating device, the driving belt wheel 9 is connected with a driving belt wheel 91 connected with the motor 12 through a belt, the driving belt wheel 9 and the rotating shaft 6 rotate coaxially, and the rotating shaft 6 is connected with the driving belt wheel 9 through a coupler 7. Of course, the driving pulley 91 connected to the motor 12 may also be directly engaged with the driving pulley 9 to drive the driving pulley 9 to rotate, and the rotation speed and the rotation direction of the rotating shaft 6 may be changed by controlling the motor 12.
In the excitation device, one end of the excitation rod 22 close to the heating box 1 is connected with the first cantilever beam 20 through a threaded hole, the excitation rod 22 is installed on the supporting platform 11 through an excitation supporting fixed pulley 23, and the excitation frequency of the excitation rod can be controlled to simulate different excitation environments.
In the static device, one end of the static rod 28 close to the heating box 1 is connected with the second cantilever beam 27 through a threaded hole, the static rod 28 is installed on the supporting platform 11 through a static supporting fixed pulley 29, and the weight 32 is connected with one end of the static rod 28 far away from the heating box 1 through a steel wire rope 31. The weights 32 can be increased or decreased to simulate static environments of different sizes.
In the testing device, a high-temperature resistant strain gauge 17 for calibrating the optical fiber sensor 15 is electrically connected with the optical fiber sensor 15, the optical fiber sensor 15 is electrically connected with the optical fiber rotary connector 10 through a transmission optical fiber 16, and the high-temperature resistant strain gauge 17 is electrically connected with the via hole electric slip ring 8 through a lead 26.
It is noted that the rotating device, the exciting device and the static device are all supported by a supporting platform 11, wherein the rotating shaft 6 is mounted on the supporting platform 11 through a bearing seat 4 and a cooling water sealing ring 5, the exciting rod 22 is mounted on the supporting platform 11 through an exciting supporting fixed pulley 23, and the static rod 28 is mounted on the supporting platform 11 through a static supporting fixed pulley 29.
The comprehensive experiment platform for testing the high-temperature components can simulate the high-temperature working conditions of the components to be tested in the rotating, exciting and static environments, can detect the distribution conditions of the rotating, exciting and static strain at high temperature, provides technical data for research and development and optimization of the design of mechanical components, particularly blade components, and has good safety protection performance and high detection accuracy for the high-temperature environment of the detection components.
The present invention is not limited to the above-described specific embodiments, and various modifications and variations are possible. Any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A comprehensive experiment platform for testing high-temperature components is characterized in that: including rotary device, excitation device, static device, heating device and testing arrangement, heating device includes heating cabinet (1) and sets up in heating member (2) in heating cabinet (1), rotary device include await measuring component (3), pivot (6), with driving pulley (9) that pivot (6) are connected and with motor (12) that driving pulley (9) are connected, pivot (6) are close to the one end of awaiting measuring component (3) have partly at least to be located in heating cabinet (1), excitation device is including being used for when simulation high temperature excitation environment at least partly stretch into excitation pole (22) in heating cabinet (1), set up in excitation pole (22) are close to first cantilever beam (20) of the one end of heating cabinet (1) and set up in excitation pole (22) keep away from the vibration exciter (25) of the one end of heating cabinet (1), the static device comprises a static rod (28) used for at least partially extending into the heating box (1) when a high-temperature static environment is simulated, a second cantilever beam (27) arranged at one end, close to the heating box (1), of the static rod (28) and a weight (32) arranged at one end, far away from the heating box (1), of the static rod (28), wherein the testing device comprises an optical fiber sensor (15), a high-temperature-resistant strain gage (17) used for calibrating the optical fiber sensor (15), an optical fiber rotary connector (10) electrically connected with the optical fiber sensor (15) through a transmission optical fiber (16) and a via hole electric slip ring (8) connected with the high-temperature-resistant strain gage (17) through a lead (26).
2. A comprehensive experimental platform for testing high temperature components according to claim 1, characterized in that: the testing device also comprises a demodulator (14) electrically connected with the optical fiber rotary connector (10) and the through hole electric slip ring (8), and a computer (13) electrically connected with the demodulator (14).
3. A comprehensive experimental platform for testing high temperature components according to claim 1, characterized in that: and the heating box (1) is provided with shaft holes for the rotating shaft (6), the excitation rod (22) and the static rod (28) to pass through.
4. A comprehensive experimental platform for testing high temperature components according to claim 3, characterized in that: and a heat insulation flange (21) is arranged on the outer side of the shaft hole.
5. A comprehensive experimental platform for testing high temperature components according to claim 1, characterized in that: the motor (12) is connected with a driving belt wheel (91), and the transmission belt wheel (9) is connected with the driving belt wheel (91) through a belt.
6. A comprehensive experimental platform for testing high temperature components according to claim 1, characterized in that: the cooling device is characterized in that a cooling cavity (61) and a signal transmission cavity (62) are arranged in the rotating shaft (6), the cooling cavity (61) is provided with a cooling water inlet (18) and a cooling water outlet (19), and the cooling water outlet (19) is provided with a sealing flange.
7. A comprehensive experimental platform for testing high temperature components according to claim 1, characterized in that: the rotating shaft (6) is connected to the supporting table (11) through the bearing seat (4) and the cooling water sealing ring (5), and the cooling water sealing ring (5) is provided with an inlet and an outlet.
8. A comprehensive experimental platform for testing high temperature components according to claim 1, characterized in that: the element to be tested (3) is mounted on the rotating shaft (6) through a wheel disc, and the rotating shaft (6) is connected with the transmission belt wheel (9) through a coupler (7).
9. A comprehensive experimental platform for testing high temperature components according to claim 1, characterized in that: one end, close to the heating box (1), of the excitation rod (22) is connected with the first cantilever beam (20) through a threaded hole, the excitation rod (22) is installed on the supporting table (11) through an excitation supporting fixed pulley (23), and a cooling copper pipe (24) is arranged on the excitation rod (22).
10. A comprehensive experimental platform for testing high temperature components according to claim 1, characterized in that: quiet pole (28) are close to the one end of heating cabinet (1) pass through the screw hole with second cantilever beam (27) are connected, quiet pole (28) are installed to brace table (11) through quiet power support fixed pulley (29), be provided with coolant tank (30) on quiet pole (28), weight (32) pass through wire rope (31) with quiet pole (28) are kept away from the one end of heating cabinet (1) is connected.
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