CN105465003A - Axial force testing system and method for vertical shielding pump - Google Patents
Axial force testing system and method for vertical shielding pump Download PDFInfo
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- CN105465003A CN105465003A CN201511004634.5A CN201511004634A CN105465003A CN 105465003 A CN105465003 A CN 105465003A CN 201511004634 A CN201511004634 A CN 201511004634A CN 105465003 A CN105465003 A CN 105465003A
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- thrust
- bearing
- axial force
- flywheel assembly
- pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
Abstract
The invention provides an axial force testing system and method for a vertical shielding pump. The axial force testing system comprises a pump shell, an impeller, an upper flywheel assembly, a rotor, a stator, a radial bearing, a thrust bearing, a lower flywheel assembly and a detecting device. The upper flywheel assembly and the lower flywheel assembly are connected with the rotor, the rotor is connected with the pump shell through the bearing, the detecting device comprises a plurality of piezoelectric-ceramic-type sensors, and the piezoelectric-ceramic-type sensors are embedded into thrust segments of the thrust bearing. By means of the axial force testing system and method, measuring for axial force of the vertical shielding pump can be achieved, and reference data are provided for design, optimization and service life prediction of the axial thrust bearing of the vertical shielding pump.
Description
Technical field
The invention belongs to field of mechanical technique, particularly a kind of Research on Testing System of Thrust on Aluminum of vertical shield pump and method.
Background technique
Vertical shield pump belongs to No leakage centrifugal pump, and its bearing is water cooling lubricated type thrust-bearing, and noise is very low, and this environment protection type water pump is applied more and more widely.The use field of this pump relates to multiple field such as fuel adding before used in nuclear power station core cascade screen electric pump, running water booster system, heat supply heating circulation, space flight rocket launching.Depend primarily on the working life of thrust-bearing the working life of this pump.And can thrust-bearing normally use, depend on its axial force size of bearing and the wear resistance of itself.What vertical shield pump comprised the parts such as rotor, impeller and main shaft because its thrust-bearing subjects focuses on interior whole axial forces certainly, belongs to weak, fragile parts.At Overhaul site, the generation of the faults such as vertical shield pump maintenance down, major part is because axial force is excessive or thrust bearing wearing destruction causes.Therefore, measure the axial force suffered by the thrust-bearing in vertical shield pump accurately, by contributing to the reliability of raising vertical shield pump and increasing the service life, there is extremely important realistic meaning.
Summary of the invention
Goal of the invention:
The object of the invention is the Research on Testing System of Thrust on Aluminum and the method that provide a kind of vertical shield pump, the axial force solving existing vertical shield pump is difficult to the problem of testing, solve and be difficult to design and improve the problem of the thrust-bearing in vertical shield pump, design and improvement for the thrust-bearing in vertical shield pump provide reliably with technical parameter accurately.
Technological scheme:
A kind of Research on Testing System of Thrust on Aluminum of vertical shield pump, comprise supporting frame, pump case, impeller, top flywheel assembly, bottom flywheel assembly, rotor and detection device, it is characterized in that: the upper end of pump case is connected with supporting frame, impeller, top flywheel assembly and bottom flywheel assembly are arranged in pump case, impeller, top flywheel assembly and have gap between bottom flywheel assembly and pump housing endophragm; Top flywheel assembly and bottom flywheel assembly and top radial bearing and lower radial bearings are separately positioned on the two ends of rotor; The two ends of rotor are connected with the inwall of pump case with lower radial bearings respectively by top radial bearing; Rotor exterior is provided with stator component; Be provided with thrust-bearing between lower radial bearings and bottom flywheel assembly, detection device is the piezoelectric ceramic type sensor be arranged in thrust-bearing.
Piezoelectric ceramic type sensor is embedded on the thrust pad of thrust-bearing.
Piezoelectric ceramic type sensor is 8, and 8 piezoelectric ceramic type sensors are embedded in 8 thrust pads of thrust-bearing.
Top flywheel assembly is connected with rotor by key with bottom flywheel assembly.
The upper end of pump case is connected with supporting frame suspension type by flange plate.
Test system also comprises the data collection system for collecting the measured value of piezoelectric ceramic type sensor, and data collection system is connected with piezoelectric ceramic type sensor.
Carry out a method for axial force testing with the Research on Testing System of Thrust on Aluminum of above-mentioned vertical shield pump, it is characterized in that: the method step is as follows:
A. when rotor part is static, piezoelectric ceramic type sensor is embedded on the thrust pad of thrust-bearing, thrust-bearing receives the gravity forces of rotor part, this gravity forces is delivered on piezoelectric ceramic type sensor, thus the axial force that the axial force G1 measured suffered by static position lower thrust-bearing, G1 bear for thrust-bearing time static;
B. shielded motor is started, before shielded motor rotating speed reaches rated speed, shielded motor drives rotor part to rotate, in rotary course, thrust-bearing, while being subject to the gravity forces of rotor part, also receiving buoyancy, impeller front and rear cover plate pressure difference and the axial force of the sensing suction eye produced and liquid stream and to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G2 suffered by thrust-bearing, the axial force that G2 bears for thrust-bearing during pump startup;
C. when vertical shield pump normally runs, the rotating speed of pump is 1500rpm, in running, thrust-bearing, while being subject to the gravity forces of rotor part, also receiving buoyancy, impeller front and rear cover plate pressure difference and the axial force of the sensing suction eye produced and liquid stream and to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G3 suffered by thrust-bearing, the axial force that G3 bears for thrust-bearing described during pump operation;
D. shielded motor is closed, top flywheel assembly and bottom flywheel assembly drive rotor to rotate jointly, and produce running down phenomenon, in rotary course, thrust-bearing, while being subject to the gravity forces of rotor part, also receiving buoyancy, impeller front and rear cover plate pressure difference and the axial force of the sensing suction eye produced and liquid stream and to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G4 suffered by thrust-bearing, the axial force that G4 bears for described thrust-bearing during pump dead electricity.
Advantage and effect:
The Research on Testing System of Thrust on Aluminum of this vertical shield pump of the present invention and method, tool has the following advantages and beneficial effect:
The Research on Testing System of Thrust on Aluminum of vertical shield pump of the present invention can realize the real-time axial force that the rotor of vertical canned motorpump and epitrochanterian assembly bear and test, and can axial force be obtained, the design and optimization for the thrust-bearing in vertical shield pump provides reliable reference data.
The Research on Testing System of Thrust on Aluminum of vertical shield pump of the present invention can collect the real time data of the axial force suffered by thrust-bearing in the vertical shield pump under each operating mode.
Accompanying drawing illustrates:
Fig. 1 is the axial force data collection system of vertical shield pump of the present invention and the structural representation of test system.
Fig. 2 is the structural representation of the Research on Testing System of Thrust on Aluminum of vertical shield pump of the present invention.
Fig. 3 is the part sectioned view of the Research on Testing System of Thrust on Aluminum of vertical shield pump of the present invention.
Fig. 4 is the part-structure schematic diagram of the Research on Testing System of Thrust on Aluminum of vertical shield pump of the present invention.
Description of reference numerals:
1-supporting frame, 2-pump case, 3-impeller, 4-heat shield assembly, the upper flywheel assembly of 5-, 6-top radial bearing, 7-rotor, 8-stator, 9-lower radial bearings, 10-thrust-bearing, flywheel assembly under 11-, 12-thrust pad, 13-piezoelectric ceramic type sensor.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described further:
As Figure 1-Figure 4, the Research on Testing System of Thrust on Aluminum that the invention provides a kind of vertical shield pump comprises supporting frame 1, pump case 2, impeller 3, top flywheel assembly 5, bottom flywheel assembly 11, rotor 7 and detection device, it is characterized in that: the upper end of pump case 2 is connected with supporting frame 1, impeller 3, top flywheel assembly 5 and bottom flywheel assembly 11 are arranged in pump case 2, have gap between impeller 3, top flywheel assembly 5 and bottom flywheel assembly 11 and pump case 2 inwall; Top flywheel assembly 5 and bottom flywheel assembly 11 and top radial bearing 6 and lower radial bearings 9 are separately positioned on the two ends of rotor 7; The two ends of rotor 7 are connected with the inwall of lower radial bearings 9 with pump case 2 respectively by top radial bearing 6; Rotor 7 outside is provided with stator component 8; Be provided with thrust-bearing 10 between lower radial bearings 9 and bottom flywheel assembly 11, detection device is the piezoelectric ceramic type sensor 13 be arranged in thrust-bearing 10.
Piezoelectric ceramic type sensor 13 is embedded on the thrust pad 12 of thrust-bearing 10.Be arranged on optimum force bearing point, more accurately can measure suffered axial force more really.And install simple, be easy to operation.
Piezoelectric ceramic type sensor 13 is 8, and 8 piezoelectric ceramic type sensors 13 are embedded in 8 thrust pads 12 of thrust-bearing 10.
Top flywheel assembly 5 is connected with rotor 7 by key with bottom flywheel assembly 11.
The upper end of pump case 2 is connected with supporting frame 1 suspension type by flange plate.This Placement conforms to operating mode, is more conducive to measuring To Axial Force Needed.
Test system also comprises the data collection system for collecting the measured value of piezoelectric ceramic type sensor, and data collection system is connected with piezoelectric ceramic type sensor 13.
The heat shield assembly 4 be connected with pump case 2 inside is provided with between pump and motor.
Carry out the method for axial force testing with the Research on Testing System of Thrust on Aluminum of above-mentioned vertical shield pump, it is characterized in that: the method step is as follows:
A. when rotor part is static, piezoelectric ceramic type sensor is embedded on the thrust pad of thrust-bearing, thrust-bearing receives the gravity forces of rotor part, this gravity forces is delivered on piezoelectric ceramic type sensor, thus the axial force that the axial force G1 measured suffered by static position lower thrust-bearing, G1 bear for thrust-bearing time static;
B. shielded motor is started, before shielded motor rotating speed reaches rated speed, shielded motor drives rotor part to rotate, in rotary course, thrust-bearing, while being subject to the gravity forces of rotor part, also receives buoyancy, impeller front and rear cover plate pressure difference etc. and the axial force of sensing suction eye that produces and liquid stream to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G2 suffered by thrust-bearing, the axial force that G2 bears for thrust-bearing during pump startup;
C. when vertical shield pump normally runs, the rotating speed of pump is 1500rpm, in running, thrust-bearing, while being subject to the gravity forces of rotor part, also receives buoyancy, impeller front and rear cover plate pressure difference etc. and the axial force of sensing suction eye that produces and liquid stream to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G3 suffered by thrust-bearing, the axial force that G3 bears for thrust-bearing described during pump operation;
D. shielded motor is closed, top flywheel assembly and bottom flywheel assembly drive rotor to rotate jointly, and produce running down phenomenon, in rotary course, thrust-bearing, while being subject to the gravity forces of rotor part, also receives buoyancy, impeller front and rear cover plate pressure difference etc. and the axial force of sensing suction eye that produces and liquid stream to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G4 suffered by thrust-bearing, the axial force that G4 bears for described thrust-bearing during pump dead electricity.
The Research on Testing System of Thrust on Aluminum of vertical shield pump of the present invention can realize the real-time axial force that the rotor of vertical canned motorpump and epitrochanterian assembly bear and test, and can maximum axial force be obtained, the design and optimization for the thrust-bearing in vertical shield pump provides reliable reference data; The axial-force testing device of vertical shield pump of the present invention can collect the real time data of the axial force suffered by thrust-bearing in the vertical shield pump under each operating mode.
Embodiment 1
Refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the Research on Testing System of Thrust on Aluminum of vertical shield pump of the present invention, comprise pump case 2, impeller 3, top flywheel assembly 5, bottom flywheel assembly 11, rotor 7, detection device.Top flywheel assembly 5 is connected on rotor 7 respectively by the mode that key is connected with bottom flywheel assembly 11.The two ends of rotor 7 are connected with the inwall of lower radial bearings 9 with pump case 2 respectively by top radial bearing 6, impeller 3, top flywheel assembly 5 and bottom flywheel assembly 11 are arranged in pump case 2, have gap between top flywheel assembly 5, bottom flywheel assembly 11 and impeller 3 and pump case 2 inwall.The upper end of pump case 2 is connected with supporting frame 1 suspension type by flange plate.Detection device piezoelectric ceramic type sensor 13 is embedded on the thrust pad 12 of thrust-bearing 10.
In the present embodiment, piezoelectric ceramic type sensor is 8, and 8 piezoelectric ceramic type sensors are embedded on 8 pieces of thrust pads 12 of thrust-bearing respectively.
In the present embodiment, also comprise data collection system, Data Collection is connected with piezoelectric ceramic type sensor, and data collection system is used for carrying out real-time collection to the measured value of piezoelectric ceramic type sensor.
The test method of above-mentioned test system, step is as follows:
A. the annexation of each parts according to embodiment 1 is installed, during stationary rotor, piezoelectric ceramic type sensor is embedded on the thrust pad of thrust-bearing, thrust-bearing receives the gravity forces of the rotor parts such as impeller, stator, flywheel assembly, this gravity forces is delivered on piezoelectric ceramic type sensor, thus the axial force G1 measured suffered by static position lower thrust-bearing, the axial force that G1 bears for thrust-bearing time static, thus the transmission of axial force and test when completing static;
B. shielded motor is started, in 30 minutes after starting shielded motor, shielded motor drives rotor to rotate, in rotary course, buoyancy, impeller front and rear cover plate pressure difference etc. and the axial force of sensing suction eye that produces, liquid stream to change the dynamical reaction acted on impeller caused through impeller inlet and Way out, thus makes thrust-bearing be subject to the effect of axial force, and this axial force also comprises itself gravity forces; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G2 suffered by thrust-bearing, the axial force that G2 bears for thrust-bearing during pump startup, thus the transmission of axial force and test start up period of completing;
C. when vertical shield pump normally runs, the rotating speed of pump is 1500rpm, in running, thrust-bearing, while the gravity forces being subject to the rotor parts such as impeller, stator, flywheel assembly, also receives buoyancy, impeller front and rear cover plate pressure difference etc. and the axial force of sensing suction eye that produces and liquid stream to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G3 suffered by thrust-bearing, the axial force that G3 bears for thrust-bearing during pump operation, thus completes transmission and the test of axial force when normally running;
D. shielded motor is closed, top flywheel assembly and bottom flywheel assembly drive rotor to rotate jointly, and create running down phenomenon, in rotary course, thrust-bearing, while the gravity forces being subject to the rotor parts such as impeller, stator, flywheel assembly, also receives buoyancy, impeller front and rear cover plate pressure difference etc. and the axial force of sensing suction eye that produces and liquid stream to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G4 suffered by thrust-bearing, the axial force that G4 bears for thrust-bearing during pump dead electricity, thus the transmission of axial force and test when completing dead electricity; Data collection system can carry out real-time collection to each phase measuring value of piezoceramic transducer, and the design and optimization for the thrust-bearing in vertical shield pump provides reliable reference data.
In the present embodiment, when vertical shield pump being changed to the vertical pump of other structural similarities such as core main pump, applicable equally.
Claims (7)
1. the Research on Testing System of Thrust on Aluminum of a vertical shield pump, comprise supporting frame (1), pump case (2), impeller (3), top flywheel assembly (5), bottom flywheel assembly (11), rotor (7) and detection device, it is characterized in that: the upper end of pump case (2) is connected with supporting frame (1), impeller (3), top flywheel assembly (5) and bottom flywheel assembly (11) are arranged in pump case (2), impeller (3), top flywheel assembly (5) and have gap between bottom flywheel assembly (11) and pump case (2) inwall; Top flywheel assembly (5) and bottom flywheel assembly (11) and top radial bearing (6) and lower radial bearings (9) are separately positioned on the two ends of rotor (7); The two ends of rotor (7) are connected with the inwall of lower radial bearings (9) with pump case (2) respectively by top radial bearing (6); Rotor (7) outside is provided with stator component (8); Be provided with thrust-bearing (10) between lower radial bearings (9) and bottom flywheel assembly (11), detection device is for being arranged on the piezoelectric ceramic type sensor (13) in thrust-bearing (10).
2. the Research on Testing System of Thrust on Aluminum of vertical shield pump according to claim 1, is characterized in that: piezoelectric ceramic type sensor (13) is embedded on the thrust pad (12) of thrust-bearing (10).
3. the Research on Testing System of Thrust on Aluminum of vertical shield pump according to claim 2, is characterized in that: piezoelectric ceramic type sensor (13) is 8, and 8 piezoelectric ceramic type sensors (13) are embedded in 8 thrust pads (12) of thrust-bearing (10).
4. the Research on Testing System of Thrust on Aluminum of vertical shield pump according to claim 1, is characterized in that: top flywheel assembly (5) is connected with rotor (7) by key with bottom flywheel assembly (11).
5. the Research on Testing System of Thrust on Aluminum of vertical shield pump according to claim 1, is characterized in that: the upper end of pump case (2) is connected with supporting frame (1) suspension type by flange plate.
6. the Research on Testing System of Thrust on Aluminum of vertical shield pump according to claim 1, it is characterized in that: test system also comprises the data collection system for collecting the measured value of piezoelectric ceramic type sensor, data collection system is connected with piezoelectric ceramic type sensor (13).
7. carry out a method for axial force testing with the Research on Testing System of Thrust on Aluminum of vertical shield pump described in claim 1, it is characterized in that: the method step is as follows:
A. when rotor part is static, piezoelectric ceramic type sensor is embedded on the thrust pad of thrust-bearing, thrust-bearing receives the gravity forces of rotor part, this gravity forces is delivered on piezoelectric ceramic type sensor, thus the axial force that the axial force G1 measured suffered by static position lower thrust-bearing, G1 bear for thrust-bearing time static;
B. shielded motor is started, before shielded motor rotating speed reaches rated speed, shielded motor drives rotor part to rotate, in rotary course, thrust-bearing, while being subject to the gravity forces of rotor part, also receiving buoyancy, impeller front and rear cover plate pressure difference and the axial force of the sensing suction eye produced and liquid stream and to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G2 suffered by thrust-bearing, the axial force that G2 bears for thrust-bearing during pump startup;
C. when vertical shield pump normally runs, the rotating speed of pump is 1500rpm, in running, thrust-bearing, while being subject to the gravity forces of rotor part, also receiving buoyancy, impeller front and rear cover plate pressure difference and the axial force of the sensing suction eye produced and liquid stream and to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G3 suffered by thrust-bearing, the axial force that G3 bears for thrust-bearing described during pump operation;
D. shielded motor is closed, top flywheel assembly and bottom flywheel assembly drive rotor to rotate jointly, and produce running down phenomenon, in rotary course, thrust-bearing, while being subject to the gravity forces of rotor part, also receiving buoyancy, impeller front and rear cover plate pressure difference and the axial force of the sensing suction eye produced and liquid stream and to change the dynamical reaction acted on impeller caused through impeller inlet and Way out; Axial force suffered by thrust-bearing by piezoelectric ceramic type sensor, thus measures the axial force G4 suffered by thrust-bearing, the axial force that G4 bears for described thrust-bearing during pump dead electricity.
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| CN201511004634.5A CN105465003B (en) | 2015-12-28 | 2015-12-28 | The Research on Testing System of Thrust on Aluminum and method of vertical shield pump |
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| CN201511004634.5A CN105465003B (en) | 2015-12-28 | 2015-12-28 | The Research on Testing System of Thrust on Aluminum and method of vertical shield pump |
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| CN105465003B CN105465003B (en) | 2017-06-06 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110501102A (en) * | 2019-09-05 | 2019-11-26 | 东方电气集团东方电机有限公司 | A kind of production and application method of thrust loading test watt |
| CN110714927A (en) * | 2019-10-08 | 2020-01-21 | 中国船舶重工集团公司第七一九研究所 | Shaftless shield pump with idling function suitable for small marine reactor |
| CN110735817A (en) * | 2019-11-01 | 2020-01-31 | 山东核电有限公司 | External axial force balancing device for nuclear main pump of passive nuclear power plant |
| CN111022312A (en) * | 2019-12-18 | 2020-04-17 | 沈阳鼓风机集团核电泵业有限公司 | Axial thrust monitoring device for reactor coolant pump |
| CN111120346A (en) * | 2019-12-17 | 2020-05-08 | 大连环友屏蔽泵有限公司 | Axial force detection system and method for large canned motor pump |
| CN112302963A (en) * | 2020-10-19 | 2021-02-02 | 中国农业大学 | Device and method for testing axial force of centrifugal pump |
| CN112733351A (en) * | 2020-12-31 | 2021-04-30 | 沈阳透平机械股份有限公司 | Method and device for processing axial force data of centrifugal compressor impeller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110714927A (en) * | 2019-10-08 | 2020-01-21 | 中国船舶重工集团公司第七一九研究所 | Shaftless shield pump with idling function suitable for small marine reactor |
| CN110735817A (en) * | 2019-11-01 | 2020-01-31 | 山东核电有限公司 | External axial force balancing device for nuclear main pump of passive nuclear power plant |
| CN111120346A (en) * | 2019-12-17 | 2020-05-08 | 大连环友屏蔽泵有限公司 | Axial force detection system and method for large canned motor pump |
| CN111120346B (en) * | 2019-12-17 | 2021-07-06 | 大连环友屏蔽泵有限公司 | Axial force detection system and method for large canned motor pump |
| CN111022312A (en) * | 2019-12-18 | 2020-04-17 | 沈阳鼓风机集团核电泵业有限公司 | Axial thrust monitoring device for reactor coolant pump |
| CN112302963A (en) * | 2020-10-19 | 2021-02-02 | 中国农业大学 | Device and method for testing axial force of centrifugal pump |
| CN112302963B (en) * | 2020-10-19 | 2022-04-01 | 中国农业大学 | Device and method for testing axial force of centrifugal pump |
| CN112733351A (en) * | 2020-12-31 | 2021-04-30 | 沈阳透平机械股份有限公司 | Method and device for processing axial force data of centrifugal compressor impeller |
| CN112733351B (en) * | 2020-12-31 | 2024-03-01 | 沈阳透平机械股份有限公司 | Method and device for processing axial force data of impeller of centrifugal compressor |
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|---|---|
| CN105465003B (en) | 2017-06-06 |
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