CN113865876B - Detection system of turbine in high temperature environment - Google Patents
Detection system of turbine in high temperature environment Download PDFInfo
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- CN113865876B CN113865876B CN202110971105.1A CN202110971105A CN113865876B CN 113865876 B CN113865876 B CN 113865876B CN 202110971105 A CN202110971105 A CN 202110971105A CN 113865876 B CN113865876 B CN 113865876B
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- 238000001514 detection method Methods 0.000 title claims abstract description 45
- 230000005540 biological transmission Effects 0.000 claims abstract description 80
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000004321 preservation Methods 0.000 claims abstract description 19
- 230000003068 static effect Effects 0.000 claims description 63
- 239000000110 cooling liquid Substances 0.000 claims description 30
- 230000017525 heat dissipation Effects 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000000306 component Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000035899 viability Effects 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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Abstract
The invention discloses a detection system of a turbine in a high-temperature environment, which comprises: the turbine is connected to the transmission shaft, the motor, the cooling module, the heat preservation furnace and the detection module, the turbine is positioned in the heat preservation furnace, and two ends of the transmission shaft extend out of the heat preservation furnace; the motor is positioned outside the heat preservation furnace and is connected with the transmission shaft; the cooling module is connected with the transmission shaft and is used for cooling the turbine; the detection module is arranged in the holding furnace and is used for detecting parameters of the rotating turbine. The detection system can improve detection accuracy.
Description
Technical Field
The invention belongs to the field of high-temperature testing of parts, and particularly relates to a detection system of a turbine in a high-temperature environment.
Background
The turbine blade is a core component of power output of an aero-engine, and is used for accurately, reliably and continuously monitoring the clearance of the blade tip on line, so that the turbine blade is a key for guaranteeing safe, efficient and long-service-life operation of the engine, and is one of important preconditions for improving the power output of the engine and enhancing the working capacity and battlefield viability of the fighter plane. Modern aeroengines are developed towards high thrust, high thrust-weight ratio and high thermal efficiency, so that the temperature of turbine gas is continuously increased, and the working environment of blades is extremely bad. With the increasing thrust ratio of the engine, the turbine inlet temperature has developed from 1750K of the 3 rd generation engine thrust ratio of 8.0 grade to 1977K of the 4 th generation engine thrust ratio of 10.0 grade, and the 5 th generation engine thrust ratio of 15.0 grade even reaches 2000-2250K.
Turbine detection techniques are numerous, but the means of adapting to high temperature extreme environments is very limited. In a high-temperature environment, the transmission shaft is softened, the turbine and the transmission shaft are in poor fit, the motion of the turbine moves out of the rotation plane and moves in a translation mode, and additional environmental variables are added, so that detected data are distorted.
The existing high-temperature detection system, namely the muffle furnace system, can statically detect various parameter changes of the turbine under the high-temperature condition, but because the static state can not obtain all data under the dynamic state, the parameters of a plurality of dynamic systems are obtained by data reasoning calculation of the static system, and larger in and out from the actual situation exists.
Disclosure of Invention
Technical problems: the invention aims to solve the problem of detection accuracy of a dynamic system represented by a rotating turbine, which cannot be solved by the existing system, in a high-temperature environment, and provides a detection system of the turbine in the high-temperature environment so as to improve the detection accuracy.
The technical scheme is as follows: in order to solve the technical problems, the embodiment of the invention adopts the following technical scheme:
a system for detecting a turbine in a high temperature environment, comprising: the turbine is connected to the transmission shaft, the motor, the cooling module, the heat preservation furnace and the detection module, the turbine is positioned in the heat preservation furnace, and two ends of the transmission shaft extend out of the heat preservation furnace; the motor is positioned outside the heat preservation furnace and is connected with the transmission shaft; the cooling module is connected with the transmission shaft and is used for cooling the turbine; the detection module is arranged in the holding furnace and is used for detecting parameters of the rotating turbine.
Preferably, the working temperature of the holding furnace is 100-2000 ℃, and the rotating speed of the turbine in working is 2000-100000 RPM.
Preferably, the cooling module comprises a dynamic and static connection module, a booster pump and a hollow static shaft, wherein the hollow static shaft is internally provided with cooling liquid; the two ends of the hollow static shaft are connected with the two ends of the transmission shaft through the dynamic and static connecting modules to form a closed loop; the booster pump is connected with the hollow static shaft and is used for boosting and driving the cooling liquid.
Preferably, the transmission shaft is a hollow shaft, a cavity is arranged in the hollow static shaft, and the cavity of the transmission shaft is communicated with the cavity of the hollow static shaft.
Preferably, the transmission shaft is a solid shaft, a first cavity and a second cavity are arranged in the hollow stationary shaft, and the end part of the first cavity is connected with the end part of the second cavity to form a closed loop; the end part of the first cavity is close to the dynamic and static connection module.
Preferably, the detection system of the turbine in the high-temperature environment further comprises a heat dissipation assembly, wherein the heat dissipation assembly comprises fins and a fan, the fins are fixedly connected with the shell of the hollow static shaft, and the fan is opposite to the fins.
Preferably, the heat dissipation assemblies are N groups, and one heat dissipation assembly is arranged at each position close to the dynamic and static connection modules; n is an integer greater than 1.
Preferably, the transmission shaft, the turbine, the hollow static shaft, the fins and the dynamic and static connection modules are all made of metal.
Preferably, the detection module comprises a detection platform, a temperature sensor and a rotating speed sensor, wherein the turbine is positioned on the detection platform, and the rotating speed sensor is connected to the transmission shaft and is positioned outside the heat preservation furnace; the temperature sensor is positioned in the holding furnace.
The beneficial effects are that: the invention can realize the high-temperature dynamic system detection represented by the rotating turbine under the conditions of 100-2000 ℃ and 2000-100000 RPM, and solves the problem that the turbine can not be dynamically detected under the conditions of high temperature and high rotating speed in the past. The detection system of the present embodiment includes: the turbine is connected to the transmission shaft, the motor, the cooling module, the heat preservation furnace and the detection module, the turbine is positioned in the heat preservation furnace, and two ends of the transmission shaft extend out of the heat preservation furnace; the motor is positioned outside the heat preservation furnace and is connected with the transmission shaft; the cooling module is connected with the transmission shaft and is used for cooling the turbine; the detection module is arranged in the holding furnace and is used for detecting parameters of the rotating turbine. According to the embodiment, the temperature of the transmission body and the turbine is maintained at a relatively low level under a high-temperature environment through the cooling module, so that the problems of softening of the shaft body and the turbine caused by high temperature are effectively solved, vibration generated by the problems is reduced, the correlation between acquired data and the physical variable under study is larger, and the data effectiveness is stronger; and because the rigidity of the shaft body and the turbine is strong, the operation of the turbine is more stable, and the reliability and stability of the whole system are improved.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention.
Reference numerals: the device comprises a turbine 1, a motor 2, a dynamic and static connection module 3, a rotating shaft 4, a hollow static shaft 5, a holding furnace 6, a revolution sensor 7, a fan 8, a booster pump 9 and fins 10.
Detailed Description
One aspect of the present invention, namely, the case where the shaft body to which the turbine is coupled is replaceable, will be further described with reference to the following detailed description of the drawings, it being understood that the following examples are intended to illustrate the present invention and should not be construed as limiting the present invention.
As shown in fig. 1, a system for detecting a turbine in a high-temperature environment according to an embodiment of the present invention includes: a turbine 1 connected to a transmission shaft 4, and a motor 2, a cooling module, a holding furnace 6 and a detection module. The turbine 1 is positioned in the holding furnace 6, and two ends of the transmission shaft 4 extend out of the holding furnace 6. The motor 2 is positioned outside the heat preservation furnace 6, and the motor 2 is connected with the transmission shaft 4. The cooling module is connected with the transmission shaft 4 and is used for cooling the turbine 1. The detection module is positioned in the holding furnace 6 and is used for detecting parameters of the rotating turbine 1. The cooling liquid has the functions of cooling, corrosion prevention, freezing prevention, scale prevention and boiling prevention.
In operation, the holding furnace 6 is used to raise the temperature of the working environment of the turbine 1. The working temperature of the holding furnace 6 is 100-2000 ℃. The motor 2 is utilized to drive the transmission shaft 4 to rotate, and then the turbine 1 fixedly connected to the transmission shaft 4 is driven to rotate. The rotation speed of the turbine 1 is 2000-100000 RPM (corresponding to English: revolutions Per minute, corresponding to translation: revolutions per minute) when in operation. In this embodiment, the turbine 1 rotates at a high speed in a high temperature environment. In this embodiment, the cooling module cools the driving shaft 4, and then cools the joint of the turbine 1 and the driving shaft 4. The temperature at the joint of the transmission shaft 4 and the turbine 1 is maintained at a lower level, so that the problems of softening the transmission shaft and the turbine caused by high temperature are solved, and the turbine vibration generated by the softening of the transmission shaft and the turbine is reduced. The detection module is an existing component. The detection module can be used to detect parameters of the rotating turbine 1, such as the rotational speed. The embodiment can improve the detection precision. This is because this embodiment has increased cooling module on the basis of current system, has solved transmission shaft, the turbine softening problem because of high temperature leads to, reduces the turbine vibration that consequently produces, promotes the measurement accuracy of entire system.
There are various structures of the cooling module. Preferably, the cooling module comprises a dynamic and static connection module 3, a booster pump 9 and a hollow static shaft 5, wherein the hollow static shaft 5 is internally provided with cooling liquid; the two ends of the hollow static shaft 5 are connected with the two ends of the transmission shaft 4 through the dynamic and static connecting modules 3 to form a closed loop; the booster pump 9 is connected with the hollow static shaft 5 and is used for boosting and driving the cooling liquid. The hollow stationary shaft 5 is located outside the holding furnace 6. In operation, the drive shaft 4 rotates and the hollow stationary shaft 5 is stationary. The dynamic and static connecting module 3 is used for connecting the transmission shaft 4 and the hollow static shaft 5 so as to meet different working states of the transmission shaft 4 and the hollow static shaft 5. The dynamic and static connecting module 3 can be a connecting piece of a hollow shaft and use a closed rolling bearing. The outer shaft of the rolling bearing is fixed on the inner wall of the connecting piece, the inner shaft of the rolling bearing is connected with the transmission shaft, and the transmission shaft surface is flat with the rolling bearing; the hollow static shaft 5 is connected to the other side of the connecting piece; corresponding flow passages are arranged between the rolling bearings and the hollow static shaft 5, so that the cooling liquid can flow.
The connecting piece is a part for connecting the rotating shaft and the static shaft, and can seal the rotating shaft and the static shaft at two ends at the same time so as to ensure that cooling liquid can flow between the rotating shaft and the static shaft. The connecting piece is made of a material with high-efficiency heat transfer performance so as to solve the heat dissipation problem of the solid rotating shaft. If the transmission shaft 4 is a solid shaft, the bearings embedded in the connecting piece are normal rolling bearings, but the length of the bearings is longer, so that the contact area between the bearings and the connecting piece and the transmission shaft 4 is increased; the connector and corresponding bearing are made of a material with high heat transfer performance, wherein the material can be high heat conductivity metal such as copper and silver.
The cooling liquid flows in the hollow stationary shaft 5 or in the drive shaft 4 and the hollow stationary shaft 5. Cooling of the drive shaft 4 and the connection of the drive shaft 4 and the turbine 1 is achieved by the flow of cooling liquid. The flow power of the coolant originates from the booster pump 9. The coolant is driven by the booster pump 9.
When the turbine 1 is matched with the transmission shaft 4 for replacement, a hollow shaft is adopted to construct a heat conduction loop, and active heat dissipation of the whole system is realized, wherein the transmission shaft 4 and the hollow static shaft 5 are respectively sealed through two ends of a connecting piece, and the booster pump 9 is connected to the hollow static shaft 5, so that realization of the heat conduction loop is completed. Preferably, the transmission shaft 4 is a hollow shaft, a cavity is arranged in the hollow static shaft 5, and the cavity of the transmission shaft 4 is communicated with the cavity of the hollow static shaft 5. If the drive shaft 4 is a hollow shaft, there is a cavity inside the drive shaft 4. The cavity of the transmission shaft 4 is communicated with the cavity of the hollow static shaft 5, and the cooling liquid flows in the cavities of the transmission shaft 4 and the hollow static shaft 5 to form circulation. In operation, the turbine 1, which rotates at a high speed, generates a large amount of heat and transfers the heat to the drive shaft 4. When the cooling liquid enters the transmission shaft 4, the cooling liquid exchanges heat with the transmission shaft 4. The cooling liquid absorbs the heat of the transmission shaft 4, the transmission shaft 4 is cooled, and then the joint of the transmission shaft 4 and the turbine 1 is also cooled. When the cooling liquid flows out of the transmission shaft 4 and enters the hollow static shaft 5, the through holes are air-cooled, so that the cooling is realized. In this way, the cooling liquid circulates in the drive shaft 4 and the hollow stationary shaft 5.
When the turbine 1 is irreplaceable with the transmission shaft 4, the heat conduction loop is realized by adopting the preferred example, namely, the solid transmission shaft 4 transfers heat to the active heat dissipation part of the hollow static shaft 5 through the connecting piece, so that the semi-active heat dissipation of the whole system is realized, wherein the active heat dissipation part can be through the booster pump, and the realization of the heat conduction loop is completed. Preferably, the transmission shaft 4 is a solid shaft, a first cavity and a second cavity are arranged in the hollow stationary shaft 5, and the end part of the first cavity is connected with the end part of the second cavity to form a closed loop; the end of the first cavity is close to the dynamic and static connection module 3. If the transmission shaft 4 is a solid shaft, two cavities, namely a first cavity and a second cavity, are arranged in the hollow static shaft 5. The ends of the first cavity and the second cavity are respectively connected to form a closed loop. The cooling liquid flows in the closed loop. In this preferred embodiment, in operation, the turbine 1, which rotates at a high speed, generates a large amount of heat and transfers the heat to the drive shaft 4. When the cooling liquid flows to one end portion of the first chamber, since the end portion is close to the drive shaft 4, it is possible to absorb part of the heat of the drive shaft 4, thereby lowering the temperature at the junction of the drive shaft 4 and the turbine 1. When the cooling liquid flows into the second cavity from one end of the first cavity, the cooling liquid takes away part of heat of the transmission shaft 4, and gradually reduces the temperature through air cooling in the flowing process. When flowing to the other end of the second cavity, the cooling liquid can absorb part of the heat of the transmission shaft 4 because the end is close to the transmission shaft 4, flows into the other end of the first cavity, and then gradually cools down through air cooling in the flowing process. The cooling liquid circulates in the first chamber and the second chamber. The first cavity and the second cavity can be arranged up and down and also can be horizontally arranged. In this process, the cooling liquid flows one turn, and both ends of the transmission shaft 4 are cooled once respectively.
In the above preferred embodiment, the two shaft body schemes adopted effectively solve the problem of turbine detection under the conditions of replaceable and non-replaceable transmission shafts, so that the turbines under various conditions can be subjected to high-precision detection under the conditions of high temperature and high rotation speed.
Preferably, the detection system of the turbine in the high-temperature environment further comprises a heat dissipation assembly, wherein the heat dissipation assembly comprises a fin 10 and a fan 8, the fin 10 is fixedly connected with the shell of the hollow static shaft 5, and the fan 8 is opposite to the fin 10. In order to accelerate the cooling liquid after heat absorption and temperature rise to cool down in the hollow static shaft 5 as soon as possible, so as to realize the heat exchange with the transmission shaft 4 next time, a heat dissipation component is arranged in the preferred embodiment. The fins 10 are fixedly connected with the outer shell of the hollow stationary shaft 5, and the cooling liquid transfers heat to the outer shell of the hollow stationary shaft 5 in the flowing process, and then the outer shell transfers heat to the fins. The fins 10 are cooled by fan 8, so that the cooling liquid is cooled rapidly.
Preferably, the heat dissipation assemblies are N groups, and one heat dissipation assembly is respectively arranged at the positions close to the dynamic and static connection modules 3; n is an integer greater than 1. The heat dissipation components are arranged at the positions close to the dynamic and static connection modules 3 respectively, so that cooling liquid close to the transmission shaft 4 can be cooled, and the cooling effect is improved.
Preferably, the transmission shaft 4, the turbine 1, the hollow static shaft 5, the fins 10 and the dynamic and static connection module 3 are all made of metal. The metal has higher heat conducting property. The transmission shaft 4, the turbine 1, the hollow static shaft 5, the fins 10 and the dynamic and static connection module 3 are all made of metal, so that quick heat transfer can be realized.
Preferably, the detection module comprises a detection platform, a temperature sensor and a rotation speed sensor 7, wherein the turbine 1 is positioned on the detection platform, and the rotation speed sensor is connected to the transmission shaft 4 and is positioned outside the holding furnace 6; the temperature sensor is located in the holding furnace 6. The detection platform is used for detecting various parameters of the turbine, such as turbine temperature, blade tip clearance, section line angle and the like. The detection platform can adopt an XYZ three-axis high-precision displacement device. The xyz triaxial high-precision movable platform can realize omnibearing micro movement of the sensor under the precision of 0.01mm, so that the measurable range of the system is larger and the precision is higher. The revolution sensor is used for detecting that the revolution reaches a revolution condition required for turbine detection. The temperature sensor is used for detecting the temperature in the furnace.
The sensor of the detection module is put into a proper position in the furnace through a reserved hole of the holding furnace, and various parameters of the turbine are detected. In the detection module, the temperature sensor can be a K-type thermocouple sensor, two ends of conductors with two different components are connected into a loop, when the temperature of the connection point is different, electromotive force is generated in the loop, and the current temperature in the furnace is converted by measuring thermoelectric force. The revolution sensor is a Hall gear revolution sensor, and the sensor generates Hall potential when magnetic force lines pass through an induction element on the sensor through the change of the magnetic force line density. After the Hall potential is generated, the Hall element of the Hall rotation speed sensor can be converted into an alternating electric signal, and finally the built-in circuit of the sensor can adjust and amplify the signal, output a rectangular pulse signal and convert the current rotation speed.
In the detection process, firstly, a high-precision displacement device with XYZ three axes is roughly adjusted, a corresponding sensor such as a displacement sensor is set at a more reasonable position relative to the turbine 1, then a booster pump 9 is turned on to enable cooling liquid to flow, and a fan 10 is turned on; then, a temperature sensor is adjusted, the temperature required by an experiment is set, at the moment, the temperature sensor transmits a signal to a heating resistance wire, the resistance wire starts to heat and reaches a specified temperature, the temperature sensor transmits a signal, the power of the resistance wire is changed, the temperature is kept at a corresponding temperature, at the moment, a motor 2 is turned on, the corresponding rotating speed is adjusted, then an XYZ three-axis high-precision displacement device is finely adjusted, the strength of the measured signal is most reasonable, then, the power of a booster pump 9 and the power of a fan 10 are adjusted, the measured signal is observed, and the interference is adjusted to be minimum; then, the measurement data is started.
According to the embodiment of the invention, by arranging the heat-dissipation cooling system and utilizing the heat pipe heat-dissipation principle and assisting the fan to actively cool, the temperature of the transmission shaft 4 is maintained at a relatively low temperature, and further the temperature of the turbine 1 can be maintained at a relatively low temperature through heat conduction between the turbine 1 and the transmission shaft 4, so that the turbine 1 and the transmission shaft 4 can maintain stronger rigidity, and the vibration problem caused by softening is reduced.
The booster pump and the fan in the cooling module are adjustable, the power of the booster pump and the fan is adjusted, the strength required by heat dissipation is adjusted according to actual needs, and the interference caused by fluid and the interference caused by temperature of the system are balanced, so that the actual optimal condition is obtained.
The invention carries out new design on an auxiliary heat dissipation module and a power module of the system, in particular to a heat transfer main body and a heat dissipation method, so as to solve the problems of softening a transmission shaft and a turbine caused by high temperature, reduce the turbine vibration generated thereby and improve the measurement accuracy of the whole system.
Claims (7)
1. A system for detecting a turbine in a high temperature environment, comprising: the turbine (1) is connected to the transmission shaft (4), the motor (2), the cooling module, the heat preservation furnace (6) and the detection module, the turbine (1) is positioned in the heat preservation furnace (6), and two ends of the transmission shaft (4) extend out of the heat preservation furnace (6); the motor (2) is positioned outside the heat preservation furnace (6), and the motor (2) is connected with the transmission shaft (4); the cooling module is connected with the transmission shaft (4) and is used for cooling the turbine (1); the detection module is used for detecting parameters of the rotating turbine (1);
the cooling module comprises a dynamic and static connection module (3), a booster pump (9) and a hollow static shaft (5), wherein cooling liquid is arranged in the hollow static shaft (5); two ends of the hollow static shaft (5) are connected with two ends of the transmission shaft (4) through the dynamic and static connecting modules (3) to form a closed loop; the booster pump (9) is connected with the hollow static shaft (5) and is used for boosting and driving the cooling liquid; the dynamic and static connecting modules (3) are connecting pieces of hollow shafts and are connected by using closed rolling bearings; the outer shaft of the rolling bearing is fixed on the inner wall of the connecting piece, the inner shaft of the rolling bearing is connected with the transmission shaft, and the transmission shaft surface is flat with the rolling bearing; the hollow static shaft (5) is connected to the other side of the connecting piece; corresponding flow passages are arranged between the rolling bearings and the hollow static shaft (5) so that cooling liquid can flow;
the detection module comprises a detection platform, a temperature sensor and a rotating speed sensor (7), wherein the turbine (1) is positioned on the detection platform, and the rotating speed sensor is connected to the transmission shaft (4) and is positioned outside the heat preservation furnace (6); the temperature sensor is positioned in the holding furnace (6).
2. The system for detecting a turbine in a high-temperature environment according to claim 1, wherein the operation temperature of the holding furnace (6) is 100 ℃ to 2000 ℃, and the rotation speed of the turbine (1) is 2000 RPM to 100000RPM when the turbine is operated.
3. The system for detecting a turbine in a high-temperature environment according to claim 1, wherein the transmission shaft (4) is a hollow shaft, a cavity is arranged in the hollow stationary shaft (5), and the cavity of the transmission shaft (4) is communicated with the cavity of the hollow stationary shaft (5).
4. The system for detecting a turbine in a high-temperature environment according to claim 1, wherein the transmission shaft (4) is a solid shaft, a first cavity and a second cavity are arranged in the hollow static shaft (5), and the end part of the first cavity is connected with the end part of the second cavity to form a closed loop; the end part of the first cavity is close to the dynamic and static connection module (3).
5. The system for detecting a turbine in a high temperature environment according to claim 1, further comprising a heat dissipating assembly comprising a fin (10) and a fan (8), the fin (10) being fixedly connected to the housing of the hollow stationary shaft (5), the fan (8) being opposite the fin.
6. The system for detecting a turbine in a high-temperature environment according to claim 5, wherein the heat dissipation assemblies are N groups, and one heat dissipation assembly is arranged near each of the dynamic and static connection modules (3); n is an integer greater than 1.
7. The system for detecting turbines in high temperature environments according to claim 5, wherein the transmission shaft (4), the turbine (1), the hollow stationary shaft (5), the fins (10) and the dynamic and static connection modules (3) are all made of metal.
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| CN109682702A (en) * | 2018-12-10 | 2019-04-26 | 湘潭大学 | A kind of thermal barrier coating of turbine blade Work condition analogue experiment test system |
| CN114867994A (en) * | 2019-11-14 | 2022-08-05 | 赛峰航空器发动机 | Modular autonomous assembly for detecting the angular position of an impeller blade and modular autonomous assembly for detecting the damage of an impeller blade of a turbine engine |
| CN110988029A (en) * | 2019-12-27 | 2020-04-10 | 西安交通大学 | Thermal-structural characteristic testing system of high-speed rotating shaft with built-in parallel-shaft rotating heat pipe |
| CN112629842A (en) * | 2020-11-27 | 2021-04-09 | 中国航发四川燃气涡轮研究院 | Heating and cooling integrated device for strength test of aero-engine wheel disc |
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