CN113607820A - Turbine rotor crack propagation on-site detection system under extreme working condition - Google Patents
Turbine rotor crack propagation on-site detection system under extreme working condition Download PDFInfo
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 104
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 104
- 239000011734 sodium Substances 0.000 claims abstract description 104
- 239000000523 sample Substances 0.000 claims abstract description 66
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 238000011065 in-situ storage Methods 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims abstract description 19
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 235000012431 wafers Nutrition 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000005485 electric heating Methods 0.000 description 7
- 239000002826 coolant Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000003044 adaptive effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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- G—PHYSICS
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Abstract
The invention provides a turbine rotor crack propagation in-situ detection system under extreme working conditions, which is used for rotor subsystems comprising a wheel disc, a switching disc, a mandrel and the like and comprises a detection subsystem and a refrigeration subsystem; the probes of the detection subsystem extend into the circulation seats and are abutted against the rotor after being uniformly arranged along the radial direction, and the computer is connected with the probes to perform in-situ detection and display on crack propagation change data of the rotor; a primary sodium cooling mechanism of the refrigeration subsystem is positioned in the cavity, so that the probe part is accommodated in the circulation hole of the circulation seat and is cooled by the sodium liquid; the two-loop water cooling mechanism penetrates through the cavity, water is stored in the two-loop water cooling mechanism, and sodium liquid in the one-loop sodium cooling mechanism is naturally cooled through the water. By implementing the invention, the problems that the existing in-situ detection probe cannot bear high temperature and vacuum is kept in a refrigeration and high-speed rotation state are solved, so that the test environment of the turbine rotor is closer to the engine state, and the examination is more real.
Description
Technical Field
The invention relates to the technical field of turbine rotor detection, in particular to an in-situ detection system for turbine rotor crack propagation under extreme working conditions.
Background
The turbine rotor operates under extreme working conditions, the rotating speed of the turbine rotor reaches tens of thousands to hundreds of thousands of revolutions per minute, the temperature reaches 300 to 1600 ℃, and the safety requirement is high. Meanwhile, internal defects such as inclusions, micro-holes and the like easily cause fatigue damage of the turbine rotor, and the safety and reliability of the aircraft engine are seriously threatened. The fatigue test of the high-speed rotation test system is a mature and effective method for checking the safety and reliability of the turbine rotor. The research on the fatigue crack propagation rule of the turbine rotor can be developed based on the test.
At present, the research on the fatigue crack propagation rule of the turbine rotor is based on displacement nondestructive detection such as a ray method and an ultrasonic method, or on-site detection methods such as a vibration/displacement/strain detection method and an acoustic emission method. However, the above method has the following problems: the displacement nondestructive detection of the ray method, the ultrasonic method and the like is suitable for nondestructive detection under the shutdown condition; when the turbine rotor is stopped, the cracks are closed, and the detection signal is weak and is not easy to identify; the displacement detection mode needs to dismantle a tool, the test progress is seriously influenced, the workload is large, the detection period of the test is long, and cracks cannot be found in the detection process before the wheel disc breaks; the nondestructive detection probes of acoustic emission, ultrasound and the like are not resistant to high temperature, and the performance of the turbine rotor under normal temperature examination is greatly different from the performance of the turbine rotor under high temperature under the engine condition; under high-speed rotation, a high-speed rotation test system has high noise, and in-situ detection methods such as a vibration/displacement/strain detection method, an acoustic emission method and the like have long signal transmission paths and poor detection effects.
Therefore, an on-site detection system for the crack propagation of the turbine rotor under the extreme working condition is urgently needed, the requirements of a high-temperature test environment and a high vacuum degree in the turbine rotor are met, the on-site detection system has the characteristics of good refrigeration effect, high safety and wide adaptive temperature range, and the problems that the existing on-site detection probe cannot bear high temperature and vacuum is kept in a refrigeration and high-speed rotation state are solved, so that the test environment of the turbine rotor is closer to the state of an engine, and the examination is more real.
Disclosure of Invention
The invention aims to solve the technical problems that an in-situ detection system for the crack propagation of the turbine rotor under an extreme working condition is provided, the requirements of a high-temperature test environment and high vacuum degree in the turbine rotor are met, the in-situ detection system has the characteristics of good refrigeration effect, high safety and wide adaptive temperature range, and the problems that the existing in-situ detection probe cannot bear high temperature and vacuum is kept in a refrigeration and high-speed rotation state are solved, so that the test environment of the turbine rotor is closer to the engine state, and the examination is more real.
In order to solve the technical problem, the embodiment of the invention provides an in-situ detection system for the crack propagation of a turbine rotor under an extreme working condition, which is used for a rotor subsystem comprising a rotor, a switching disc, a mandrel, a cavity, a tray, a heat insulation layer and an electric heating wire and comprises a detection subsystem and a refrigeration subsystem;
the detection subsystem comprises a probe and a computer connected with the probe through a signal line; wherein,
the probe extends into the circulation seat, is uniformly arranged along the radial direction and abuts against the rotor, and is used for ultrasonic testing to sense crack propagation change data of the rotor in real time; the computer is positioned outside the cavity and used for carrying out on-site detection and display on the crack propagation change data induced to the rotor;
the refrigeration subsystem comprises a primary-loop sodium cooling mechanism and a secondary-loop water cooling mechanism; wherein,
the primary loop sodium cooling mechanism is positioned in the cavity and comprises a sodium liquid pool, a circulation seat, a valve, a sodium pipe and a primary loop pump; the sodium liquid pool stores sodium liquid, and the top end of the sodium liquid pool is communicated with the circulation seat and is communicated with the circulation seat through the sodium pipe to form a circulation loop; one end, far away from the sodium liquid pool, of the circulation seat is close to the rotor and is provided with a sealing installation part for installing the probe, so that one part of the installed probe is accommodated in a circulation hole of the circulation seat and is cooled by the sodium liquid, and the other part of the installed probe extends into the circulation seat and is abutted against the rotor; the valve is arranged at the bottom end of the sodium liquid pool and used for controlling the inlet and outlet of external sodium liquid; the loop pump is arranged on the sodium pipe and used for driving sodium liquid to circulate in the sodium pipe, the sodium liquid pool and the circulation seat;
the two-loop water cooling mechanism penetrates through the cavity and comprises a heat exchanger positioned in the cavity, a two-loop pump positioned outside the cavity and a water pipe penetrating through the cavity; the heat exchanger is arranged on a sodium pipe of the primary sodium cooling mechanism and close to the mandrel, the outer wall of the heat exchanger is in contact with the outer wall of the sodium pipe, water is stored in the heat exchanger and is communicated into another circulation loop through the water pipe, and the heat exchanger is used for naturally cooling sodium liquid circulating in the sodium pipe through circulating water; the two-loop pump is arranged on the water pipe and positioned outside the cavity body and used for driving water to circulate in the water pipe and the heat exchanger.
Wherein the detection subsystem further comprises a high-speed slip ring located outside the cavity; wherein,
the high-speed slip ring is arranged at the top of the mandrel, a moving ring of the high-speed slip ring is connected with the probe through a signal wire, and a stationary ring of the high-speed slip ring is connected with the computer through another signal wire and used for transmitting ultrasonic testing data of the probe in a rotating state.
Wherein, the high-speed slip ring is CX-24-20000RPM type high-speed slip ring current leading device, and the number of slip ring channels is 24.
Wherein, the primary sodium cooling mechanism also comprises a heat insulation sleeve; wherein,
the heat insulation sleeve is arranged on the inner wall of the circulation seat and forms a whole with the circulation seat through interference and a locking plate.
The upper half part of the circulation seat is an annular groove, the inner ring and the outer ring of the circulation seat are respectively fixed on the adapter plate, the sodium liquid can be received by 360 degrees, the inner side of the outer ring inclines inwards, and the sodium liquid can move downwards under the compression of centrifugal force.
The sealing installation part is positioned on the lower half part of the circulation seat and comprises a wedge block and a sealing ring; wherein,
the wedge block is fastened on a through hole formed in the circulation seat towards the rotor through the sealing ring and can drive the probe to freely slide in the radial direction;
the heat insulation sleeve is placed in a through hole formed in the circulation seat.
Wherein, the wedge block is made of medium-high temperature resistant materials.
The probe is made of medium and low temperature resistant materials and is one of a resonant narrow-band acoustic emission probe with a passband frequency of 150KHz, a phased array full-focusing probe, a linear array phased array full-focusing probe with a frequency of more than 5MHz and a high-speed rotation resistance of 64 wafers and an area array phased array full-focusing probe with a frequency of more than 5MHz and a high-speed rotation resistance of 64 wafers.
Wherein, the probe has two, presents the symmetric distribution.
The embodiment of the invention has the following beneficial effects:
the probe is cooled by the primary circuit sodium cooling mechanism by using sodium liquid as a coolant, so that the probe is cooled for in-place detection of crack expansion inside the turbine rotor under extreme working conditions, the cooling effect is high, the requirement on higher vacuum degree can be ensured, and meanwhile, the secondary circuit water cooling mechanism is used for cooling the sodium liquid in the primary circuit sodium cooling mechanism, so that the whole circulation of the primary circuit sodium cooling mechanism is closed, and the safety problem is solved. Therefore, the requirements of high-temperature test environment and high vacuum degree in the turbine rotor are met, the turbine rotor vacuum test device has the characteristics of good refrigeration effect, high safety and wide adaptive temperature range, and solves the problems that the existing in-situ detection probe cannot bear high temperature and vacuum is kept in a refrigeration and high-speed rotation state, so that the test environment of the turbine rotor is closer to the state of an engine, and the examination is more real.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
FIG. 1 is a schematic diagram of a connection structure of a turbine rotor crack propagation in-situ detection system under extreme conditions according to an embodiment of the present invention;
FIG. 2 is a block diagram of the system architecture of FIG. 1;
FIG. 3 is an enlarged view of a portion of point A in FIG. 1;
FIG. 4 is a flow chart of the cooling scheme of FIG. 1;
the device comprises a probe 1, a heat insulation sleeve 2, a core shaft 3, a circulation seat 4, an adapter disc 5, a rotor 6, a sodium liquid pool 7, a valve 8, a sodium pipe 9, a primary loop pump 10, a tray 11, a heat insulation layer 12, an electric heating wire 13, a cavity 14, a computer 15, a high-speed slip ring 16, a water pipe 17, a secondary loop pump 18, a wedge block 19, a sealing ring 20, a signal line 21 and a heat exchanger 22.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the system for detecting crack propagation in-situ of a turbine rotor under extreme conditions in the embodiment of the present invention is used for a rotor subsystem including a rotor 6, an adapter 5, a spindle 3, a cavity 14, a tray 11, an insulating layer 12, and an electric heating wire 13; the rotor 6 is fastened through a locking nut, forms a whole with the adapter plate 5 and the mandrel 3 and is positioned in the cavity 14; the electric heating wire 13 is laid on the heat insulation layer 12, and the rotor 6, the adapter plate 5 and the mandrel 3 are wrapped in the heat insulation layer 12 and are arranged on the cavity 14 through the tray 11;
at this moment, this turbine rotor crack propagation in situ detection system under extreme operating mode includes detection subsystem and refrigeration subsystem, specifically is:
the detection subsystem comprises a probe 1 and a computer 15 connected with the probe through a signal wire 21; wherein,
the probe 1 extends into the flow seat 14, is uniformly arranged along the radial direction and abuts against the rotor 6, and is used for ultrasonic testing to sense crack propagation change data of the rotor 6 in real time; the computer 15 is positioned outside the cavity 14 and used for carrying out on-site detection and display on the crack propagation change data induced to the rotor 6;
the refrigeration subsystem comprises a primary-loop sodium cooling mechanism and a secondary-loop water cooling mechanism; wherein,
the primary loop sodium cooling mechanism is positioned in the cavity 14 and comprises a sodium liquid pool 7, a circulation seat 4, a valve 8, a sodium pipe 9 and a primary loop pump 10; the sodium liquid pool 7 stores sodium liquid, and the top end of the sodium liquid pool is communicated with the communicating base 4 and communicated with the communicating base through a sodium pipe 9 to form a circulating loop; one end of the circulation seat 4, which is far away from the sodium liquid pool 7, is close to the rotor 6 and is provided with a sealing installation part for installing the probe 1, so that one part of the installed probe 1 is accommodated in a circulation through hole in the circulation seat 4 and is cooled by the sodium liquid, and the other part of the installed probe 1 extends out of the circulation seat 4 and is abutted against the rotor 6; the valve 8 is arranged at the bottom end of the sodium liquid pool 7 and is used for controlling the inlet and outlet of external sodium liquid; a loop pump 10 is arranged on the sodium tube 9 and used for driving sodium liquid to circulate in the sodium tube 9, the sodium liquid pool 7 and the circulation seat 4 so as to rapidly drive the sodium liquid to circulate to cool the probe 1;
the two-loop water cooling mechanism penetrates through the cavity 14 and comprises a heat exchanger 22 positioned in the cavity 14, a two-loop pump 18 positioned outside the cavity 14 and a water pipe 17 penetrating through the cavity 14; the heat exchanger 22 is arranged on the sodium pipe 9 of the primary sodium cooling mechanism and close to the mandrel 3, the outer wall of the heat exchanger is in contact with the outer wall of the sodium pipe 9, water is stored in the heat exchanger and is communicated into another circulation loop through a water pipe 17, and the heat exchanger is used for naturally cooling the sodium liquid circulating in the sodium pipe 9 through the circulating water; the two-loop pump 18 is disposed on the water pipe 17 and outside the cavity 14, and is configured to drive water to circulate in the water pipe 17 and the heat exchanger 22, so as to ensure that the water circulation is rapidly driven to accelerate natural cooling of the sodium liquid in the sodium pipe 9 under the condition that the one-loop sodium cooling mechanism is closed.
It should be noted that the coolant in the primary sodium cooling mechanism is not limited to sodium liquid, but may be other liquid refrigerants. Similarly, the coolant in the two-circuit sodium cooling mechanism is not limited to water, but can be other liquid refrigerants. The flow seat 4 is always not in contact with the rotor 6, and the clearance is less than 0.5 mm. One end of a signal wire 21 penetrates through a central through hole of the mandrel 3 and is fixed on the adapter disc 5 in a welding mode, and the other end of the signal wire is connected with the computer 15.
It can be understood that, utilize the sodium liquid to cool down probe 1 for the coolant through the cold mechanism of a return circuit sodium, realized under extreme operating mode the inside crack propagation of turbine rotor and in-place measuring with probe 1's cooling, make the cooling effect high, can guarantee higher vacuum requirement, use the cold mechanism of two return circuits water simultaneously and cool down the sodium liquid in the cold mechanism of a return circuit sodium, make the cold whole circulation of mechanism of a return circuit sodium all be confined, the safety problem has been solved.
In the present embodiment, the detection subsystem further includes a high-speed slip ring 16 located outside the cavity 14; the high-speed slip ring 16 is mounted on the top of the mandrel 3, the moving ring of the high-speed slip ring is connected with the probe 1 through a signal line 21, and the stationary ring is connected with the computer 15 through another signal line 21 and used for transmitting ultrasonic testing data of the probe 1 in a rotating state. In one embodiment, the high speed slip ring 16 is a CX-24-20000RPM high speed slip ring current leader with 24 slip ring channels.
In the embodiment of the invention, the primary sodium cooling mechanism also comprises a heat insulation sleeve 2; wherein, the heat insulation sleeve 2 is arranged on the inner wall of the circulation hole of the circulation seat 4 and forms a whole with the circulation seat 4 through interference and locking sheets.
The upper half part of the circulation seat 4 is an annular groove, the inner ring and the outer ring of the circulation seat are respectively fixed on the adapter plate 5, the sodium liquid can be received by 360 degrees, the inner side of the outer ring inclines inwards, and the sodium liquid can move downwards under the compression of centrifugal force.
The lower half part of the circulation seat 4 is provided with a sealing installation part which comprises a wedge block 19 and a sealing ring 20; the wedge 19 is fastened to a through hole (not shown) of the flow seat 4 opened toward the rotor 6 through a seal ring 20, and can drive the probe 1 to freely slide in the radial direction; at this time, the heat insulating sleeve 2 is placed in the through hole formed in the circulation base 4. Therefore, the probe 1 fastened to the wedge 19 by the lock nut is immersed in the flow hole of the flow seat 4, and the wedge 19 and the rotor 6 are tightly attached when the probe 1 slides in the radial direction.
In one embodiment, the wedge 19 is made of a material resistant to medium and high temperatures; the probe 1 is made of medium and low temperature resistant materials and is one of a resonant narrow-band acoustic emission probe with a passband frequency of 150KHz, a phased array full-focusing probe, a linear array phased array full-focusing probe with a frequency of more than 5MHz and a high-speed rotation resistance of 64 wafers and an area array phased array full-focusing probe with a frequency of more than 5MHz and a high-speed rotation resistance of 64 wafers;
in another embodiment, two probes 1 are symmetrically distributed in the corresponding flow-through seats 4, and can normally work at a temperature of 250 ℃ or below.
The working principle of the in-situ detection system for the crack propagation of the turbine rotor under the extreme working condition in the embodiment of the invention is as follows:
(1) before testing, determining the maximum defect of the dangerous part, and using the maximum defect as an in-situ detection part;
(2) installing a probe 1, a wedge block 19 and other refrigeration components;
(3) the cavity 14 is vacuumized;
(4) the electric heating wire 13 is adjusted to a primary temperature control state, the temperature of the rotor 6 on the turbine disc is heated to 250 ℃, and heat preservation is carried out;
(5) opening a valve 8 and a loop pump 10, and inputting sodium liquid with the temperature of 250 ℃ into a sodium pipe 9;
(6) when a primary circuit is filled with sodium liquid, closing the valve 8, and keeping the primary circuit pump 10 running and keeping the primary circuit at 250 ℃;
(7) the electric heating wire 13 is gradually adjusted to a secondary temperature control state, and meanwhile, the two-loop pump 18 is turned on, so that the rotor 6 on the turbine disc is at a test temperature, and the loops are all at 200-250 ℃;
(8) the detection system is started, and signals are collected in real time through the probe 1;
(9) the rotor 6 is accelerated to the test rotation speed;
(10) when the test is completed, the rotor 6 is decelerated to zero;
(11) detecting system shutdown;
(12) the electric heating wire 13 is adjusted to a first-stage temperature control state, the two-loop pump 18 is gradually closed, and the temperature of the rotor 6 on the turbine disc and a loop is kept at 200-250 ℃;
(13) opening a valve 8, and extracting all sodium liquid in a primary loop;
(14) the heating wire 13 is turned off;
(15) closing the vacuum;
(16) and (5) dismantling the in-place detection system component and finishing the test.
By adopting the refrigeration method, the problem of identifying the internal defects of the turbine rotor under the extreme working condition is solved, the influence on the test progress is reduced by adopting an on-site detection mode, the workload is reduced greatly, the encryption test detection period is further achieved, and the defects are efficiently distinguished.
The embodiment of the invention has the following beneficial effects:
the probe is cooled by the primary circuit sodium cooling mechanism by using sodium liquid as a coolant, so that the probe is cooled for in-place detection of crack expansion inside the turbine rotor under extreme working conditions, the cooling effect is high, the requirement on higher vacuum degree can be ensured, and meanwhile, the secondary circuit water cooling mechanism is used for cooling the sodium liquid in the primary circuit sodium cooling mechanism, so that the whole circulation of the primary circuit sodium cooling mechanism is closed, and the safety problem is solved. Therefore, the requirements of high-temperature test environment and high vacuum degree in the turbine rotor are met, the turbine rotor vacuum test device has the characteristics of good refrigeration effect, high safety and wide adaptive temperature range, and solves the problems that the existing in-situ detection probe cannot bear high temperature and vacuum is kept in a refrigeration and high-speed rotation state, so that the test environment of the turbine rotor is closer to the state of an engine, and the examination is more real.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (9)
1. A turbine rotor crack propagation in-situ detection system under extreme working conditions is used for a rotor subsystem comprising a wheel disc (6), a switching disc (5), a mandrel (3), a cavity (14), a tray (11), a heat insulation layer (12) and heating wires (13), and is characterized by comprising a detection subsystem and a refrigeration subsystem;
the detection subsystem comprises a probe (1) and a computer (15) connected with the probe through a signal wire (21); wherein,
the probes (1) extend into the circulation seat (4), are uniformly arranged along the radial direction and then abut against the wheel disc (6) and are used for ultrasonic testing to sense crack propagation change data of the wheel disc (6) in real time; the computer (15) is positioned outside the cavity (14) and is used for carrying out on-site detection and display on the crack propagation change data induced to the wheel disc (6);
the refrigeration subsystem comprises a primary-loop sodium cooling mechanism and a secondary-loop water cooling mechanism; wherein,
the primary loop sodium cooling mechanism is positioned in the cavity (14) and comprises a sodium liquid pool (7), a circulation seat (4), a valve (8), a sodium pipe (9) and a primary loop pump (10); the sodium liquid pool (7) stores sodium liquid, and the top end of the sodium liquid pool is communicated with the circulation seat (4) and communicated with the circulation seat through the sodium pipe (9) to form a circulation loop; one end, far away from the sodium liquid pool (7), of the circulation seat (4) is close to the wheel disc (6) and is provided with a sealing installation part for installing the probe (1), so that one part of the installed probe (1) is contained in the circulation hole of the circulation seat (4) and is cooled by the sodium liquid, and the other part of the installed probe extends into the circulation seat (4) and abuts against the wheel disc (6); the valve (8) is arranged at the bottom end of the sodium liquid pool (7) and is used for controlling the inlet and outlet of external sodium liquid; the loop pump (10) is arranged on the sodium pipe (9) and used for driving sodium liquid to circulate in the sodium pipe (9), the sodium liquid pool (7) and the circulation seat (4);
the two-loop water cooling mechanism penetrates through the cavity (14) and comprises a heat exchanger (22) positioned in the cavity (14), a two-loop pump (18) positioned outside the cavity (14) and a water pipe (17) penetrating through the cavity (14); the heat exchanger (22) is arranged on a sodium tube (9) of the primary loop sodium cooling mechanism and close to the mandrel (3), the outer wall of the heat exchanger is in contact with the outer wall of the sodium tube (9), water is stored in the heat exchanger and is communicated into another circulation loop through the water tube (17) to naturally cool sodium liquid circulating in the sodium tube (9) through circulating water; the two-loop pump (18) is arranged on the water pipe (17), is positioned outside the cavity (14) and is used for driving water to circulate in the water pipe (17) and the heat exchanger (22).
2. The extreme condition turbine rotor crack propagation in-situ detection system of claim 1 wherein the detection subsystem further comprises a high speed slip ring (16) located outside the cavity (14); wherein,
the high-speed slip ring (16) is arranged on the top of the mandrel (3), a moving ring of the high-speed slip ring is connected with the probe (1) through a signal line (21), and a static ring of the high-speed slip ring is connected with the computer (15) through another signal line (21) and used for transmitting ultrasonic testing data of the probe (1) in a rotating state.
3. The extreme condition turbine rotor crack propagation in-situ detection system of claim 2, characterized in that the high speed slip ring (16) is a CX-24-20000RPM high speed slip ring current guider with 24 slip ring channels.
4. The in-situ turbine rotor crack propagation detection system under the extreme conditions of claim 1, wherein the primary sodium cooling mechanism further comprises a heat insulating sleeve (2); wherein,
the heat insulation sleeve (2) is arranged on the inner wall of the circulation groove of the circulation seat (4) and forms a whole with the circulation seat (4) through interference and locking pieces.
5. The in-place crack propagation detection system for the turbine rotor under the extreme working condition as claimed in claim 4, wherein the upper half part of the circulating seat (4) is an annular groove, the inner ring and the outer ring of the circulating seat are respectively fixed on the adapter plate (5) and can receive sodium liquid at 360 degrees, and the inner side of the outer ring inclines inwards to enable the sodium liquid to move downwards under the compression of centrifugal force.
6. The in-situ turbine rotor crack propagation detection system under the extreme working condition of claim 5 is characterized in that the seal mounting part is positioned at the lower half part of the flow seat (4) and comprises a wedge block (19) and a sealing ring (20); wherein,
the wedge block (19) is fastened on a through hole which is formed in the circulation seat (4) and faces the wheel disc (6) through the sealing ring (20), and can drive the probe (1) to freely slide in the radial direction;
the heat insulation sleeve (2) is placed in a through hole formed in the circulation base (4).
7. The in-situ turbine rotor crack propagation detection system under the extreme working conditions of claim 6 is characterized in that the wedge block (19) is made of a medium-high temperature resistant material.
8. The in-situ turbine rotor crack propagation detection system under the extreme working condition as claimed in claim 1, wherein the probe (1) is made of a medium-low temperature resistant material, and is one of a resonant narrow-band acoustic emission probe with a passband frequency of 150KHz, a phased array full-focusing probe, a linear array phased array full-focusing probe with a frequency of more than 5MHz and a high-speed rotation resistance of 64 wafers, and an area array phased array full-focusing probe with a frequency of more than 5MHz and a high-speed rotation resistance of 64 wafers.
9. The in-situ turbine rotor crack propagation detection system under the extreme working condition of claim 8 is characterized in that two probes (1) are symmetrically distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110915379.9A CN113607820B (en) | 2021-08-10 | 2021-08-10 | Turbine rotor crack propagation in-situ detection system under extreme working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110915379.9A CN113607820B (en) | 2021-08-10 | 2021-08-10 | Turbine rotor crack propagation in-situ detection system under extreme working condition |
Publications (2)
| Publication Number | Publication Date |
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| CN113607820A true CN113607820A (en) | 2021-11-05 |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4527620A (en) * | 1984-05-02 | 1985-07-09 | Varian Associates, Inc. | Apparatus for controlling thermal transfer in a cyclic vacuum processing system |
| US4789828A (en) * | 1986-04-16 | 1988-12-06 | Tornbloms Kvalitetskontroll Ab | Coolant structure for a device for determining the quality of hot test objects |
| CN101424666A (en) * | 2007-11-02 | 2009-05-06 | 通用电气公司 | Method and apparatus for testing and evaluating machine components under simulated in-situ thermal operating conditions |
| JP2010185785A (en) * | 2009-02-12 | 2010-08-26 | Chugoku Electric Power Co Inc:The | Method and system for flaw detection of ultrasonic sensor in power generating equipment |
| KR20140136159A (en) * | 2013-05-20 | 2014-11-28 | 주식회사 선익시스템 | Apparatus for measuring thickness of deposition |
| CN106297914A (en) * | 2016-09-14 | 2017-01-04 | 华南理工大学 | A kind of passive high-temperature heat pipe fast reactor reactor core heat transfer system and method thereof |
| JP2019007580A (en) * | 2017-06-27 | 2019-01-17 | 日本精工株式会社 | Bearing with wireless sensor |
| CN109571159A (en) * | 2019-01-02 | 2019-04-05 | 南京航空航天大学 | A kind of fine ultrasonic machining device of free abrasive and feeding adjusting method |
| CN209166085U (en) * | 2018-11-17 | 2019-07-26 | 南京汤达新型材料制造有限公司 | Cooling body for smelting furnace inner sensor |
| CN110161124A (en) * | 2018-06-25 | 2019-08-23 | 北京机电工程研究所 | A kind of acoustic emission signal sensory perceptual system suitable for hot environment |
| CN110174464A (en) * | 2019-04-16 | 2019-08-27 | 浙江大学 | A kind of turbine engine rotor internal flaw extends online supersonic detection device and method |
| CN212191154U (en) * | 2020-06-02 | 2020-12-22 | 马鞍山职业技术学院 | Ultrasonic detection device for thickness of solidified shell in continuous casting secondary cooling area |
| CN112432845A (en) * | 2020-12-02 | 2021-03-02 | 青岛理工大学 | Shear test system and method for rock joint surface under high-temperature and high-pressure conditions |
-
2021
- 2021-08-10 CN CN202110915379.9A patent/CN113607820B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4527620A (en) * | 1984-05-02 | 1985-07-09 | Varian Associates, Inc. | Apparatus for controlling thermal transfer in a cyclic vacuum processing system |
| US4789828A (en) * | 1986-04-16 | 1988-12-06 | Tornbloms Kvalitetskontroll Ab | Coolant structure for a device for determining the quality of hot test objects |
| CN101424666A (en) * | 2007-11-02 | 2009-05-06 | 通用电气公司 | Method and apparatus for testing and evaluating machine components under simulated in-situ thermal operating conditions |
| JP2010185785A (en) * | 2009-02-12 | 2010-08-26 | Chugoku Electric Power Co Inc:The | Method and system for flaw detection of ultrasonic sensor in power generating equipment |
| KR20140136159A (en) * | 2013-05-20 | 2014-11-28 | 주식회사 선익시스템 | Apparatus for measuring thickness of deposition |
| CN106297914A (en) * | 2016-09-14 | 2017-01-04 | 华南理工大学 | A kind of passive high-temperature heat pipe fast reactor reactor core heat transfer system and method thereof |
| JP2019007580A (en) * | 2017-06-27 | 2019-01-17 | 日本精工株式会社 | Bearing with wireless sensor |
| CN110161124A (en) * | 2018-06-25 | 2019-08-23 | 北京机电工程研究所 | A kind of acoustic emission signal sensory perceptual system suitable for hot environment |
| CN209166085U (en) * | 2018-11-17 | 2019-07-26 | 南京汤达新型材料制造有限公司 | Cooling body for smelting furnace inner sensor |
| CN109571159A (en) * | 2019-01-02 | 2019-04-05 | 南京航空航天大学 | A kind of fine ultrasonic machining device of free abrasive and feeding adjusting method |
| CN110174464A (en) * | 2019-04-16 | 2019-08-27 | 浙江大学 | A kind of turbine engine rotor internal flaw extends online supersonic detection device and method |
| CN212191154U (en) * | 2020-06-02 | 2020-12-22 | 马鞍山职业技术学院 | Ultrasonic detection device for thickness of solidified shell in continuous casting secondary cooling area |
| CN112432845A (en) * | 2020-12-02 | 2021-03-02 | 青岛理工大学 | Shear test system and method for rock joint surface under high-temperature and high-pressure conditions |
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