CN104141618A - Decoupling testing device for centrifugal pump - Google Patents
Decoupling testing device for centrifugal pump Download PDFInfo
- Publication number
- CN104141618A CN104141618A CN201410410605.8A CN201410410605A CN104141618A CN 104141618 A CN104141618 A CN 104141618A CN 201410410605 A CN201410410605 A CN 201410410605A CN 104141618 A CN104141618 A CN 104141618A
- Authority
- CN
- China
- Prior art keywords
- centrifugal pump
- motor
- spiral case
- excitation
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention relates to a decoupling testing device for a centrifugal pump. A spiral casing of the centrifugal pump is arranged on a spiral casing support pedestal through a separation decoupling bracket, an impeller rotor is arranged on a motor shaft of a driving motor of the centrifugal pump, and the driving motor of the centrifugal pump is arranged on a motor support pedestal which is independent of the spiral casing support pedestal, so that the spiral casing is physically separated from a rotor of the driving motor to realize the vibration decoupling of fluid excitation, mechanical excitation and electromagnetic excitation; a dynamic pressure pulsation sensor and a vibration acceleration sensor are arranged on the spiral casing, an eddy current sensor is arranged at the impeller rotor, a wireless stress-strain sensor is arranged on a blade, vibration acceleration sensors are arranged at bearings and legs of the motor, are connected with an acquisition and data analysis device, and are used for acquiring vibration transmission characteristics of a fluid excitation source to analyze quantitative characteristics of the fluid excitation source and realize the directional vibration and noise reduction design according to the quantitative characteristics of the fluid excitation source.
Description
Technical field
The present invention relates to a kind of centrifugal pump test device, especially a kind of decoupling zero testing apparatus of centrifugal pump.
Background technique
Centrifugal pump is that a kind of mechanical energy by prime mover is converted into the universal fluid machinery that is transferred fluid pressure energy and kinetic energy, reduce centrifugal pump vibration noise and be not only conducive to extend its working life, working environment and its periphery living environment that simultaneously also can the operation of improvement equipment.
The excitation source that causes centrifugal pump vibration noise is mainly comprised of three aspects:: fluid excitation, mechanical excitation and electromagnetic excitation, wherein fluid excited vibration noise is to streak liquid during due to electric centrifugal pump vane rotary to have produced the non-permanent pulsation of fluid, and evoke the vibration noise of centrifugal pump spiral casing, impeller and be delivered to support, it is relevant with centrifugal pump flow field fluid flow, and the principal element that affects centrifugal pump flow field fluid flow has impeller structure parameter, vane type line, worm frame parameter, dynamic and static gaps etc.; Mechanical vibration noise is mainly to be caused by factors such as electric centrifugal pump bearing, rotor unbalances, can be delivered to equipment under-chassis by bearing and the stator end cap of electric machine casing in electric centrifugal pump group; Electromagnetic vibration noise is the electromagnetic force wave that in motor gas-gap, electromagnetic field produces, evoke motor stator, rotor oscillation noise and be delivered to support, it is relevant with motor gas-gap, interior harmonic field and consequent electromagnetic force wave amplitude, winding configuration, teeth groove form and cooperation, factor such as level logarithm etc.
At present the research of electric centrifugal pump vibration noise is mainly concentrated on to simulation calculation and simple frequency spectrum qualitative analysis aspect, cannot realize quantitative identification and the quantitative Treatment of excitation source.Existing electric centrifugal pump group main structure is comprised of motor and centrifugal pump, spiral case is directly installed on electric motor end cap, or use transition supporting structure and motor rigidly connected, under this structural type, fluid excitation, mechanical excitation, the coupling of electromagnetic excitation height, cannot carry out well separated and identification to causing the drive characteristic of electric centrifugal pump vibration noise, just can not from source, to centrifugal pump vibration noise, carry out quantitative analysis and optimal design.Domestic centrifugal pump test device can not be realized the physical separation of the different drive characteristics such as fluid excitation, mechanical excitation, electromagnetic excitation at present, does not more realize specially the decoupling zero testing apparatus of the excitation of centrifugal pump fluid and mechanical excitation and electromagnetic excitation physical separation.
At present the research of electric centrifugal pump vibration noise is existed to following defect:
(1) vibration noise that fluid excitation, mechanical excitation and electromagnetic excitation produce intercouples, the vibration noise response of electric centrifugal pump group is the aliasing coupling of each excitation source, can not realize the separation of excitation source, this has brought great difficulty to the quantitative identification of excitation source, also cannot realize and have the design of the vibration and noise reducing of Directivity for the different drive characteristic of centrifugal pump;
(2) under existing centrifugal pump structure, spiral case and motor are rigidly connected, and cannot complete single factors vary such as spiral case Profile Design, spiral case rapidoprint and processing technology affects the experimental study of rule on electric centrifugal pump vibration noise.
Summary of the invention
The present invention is the decoupling zero testing apparatus that a kind of centrifugal pump will be provided, and is not changing under the prerequisite of performance of centrifugal pump parameter, realizes the physical separation of the excitation of centrifugal pump fluid and mechanical excitation and electromagnetic excitation; Can further investigate the excitation of centrifugal pump fluid, motor electromagnetic excitation, mechanical excitation and vibration transmissibility, can complete worm frame or the experimental study of changes in material to vibration equipment influence of noise rule simultaneously.
For achieving the above object, technological scheme of the present invention is: a kind of decoupling zero testing apparatus of centrifugal pump, comprise centrifugal pump spiral casing, be positioned at the blade of centrifugal pump spiral casing, vane rotor, the drive motor of centrifugal pump, be characterized in: spiral case is arranged on spiral case supporting base by separated decoupling zero support, vane rotor is arranged on the motor shaft of drive motor of centrifugal pump, drive motor is arranged on motor support pedestal, and spiral case supporting base and motor support pedestal are separate, make physical separation between spiral case and drive motor rotor, realize fluid excitation, the vibration uncoupling of mechanical excitation and electromagnetic excitation, on spiral case, arrange dynamic pressure fluctuation sensor, acceleration transducer, at vane rotor place, arrange current vortex sensor, on blade, arrange wireless stress strain gauge and arrange acceleration transducer at bearing place and the under-chassis place of motor, and each sensor connects collection and data analysis set-up, for obtaining the vibration transmissibility of fluid excitation source respectively, realize quantitative performance and the quantitative excitation source specificity analysis of foundation of fluid excitation source.
The pump cover of centrifugal pump is installed on the lower flange place of drive motor, and pump cover is the double seal pattern that labyrinth seal 10 coordinates O type silica gel ring sealing 11 with the seal style between lower flange.
Motor support pedestal is rigid support pedestal or elastic support pedestal.
First and second acceleration transducer 5,14 is arranged in the under-chassis position of drive motor 4, for testing of electric motors vibration acceleration.
The lower flange place of drive motor arranges the 3rd acceleration transducer 12, arranges the 4th acceleration transducer 13, for testing the vibration acceleration of two positions in the spiral case corresponding position of centrifugal pump.
Dynamic pressure fluctuation sensor 7 is arranged on spiral case near near the 4th acceleration transducer 13, and is circumferentially evenly arranged along spiral case, starts to arrange one every 90 ° the fluid excitation producing for testing pump operation from snail tongue position.
Current vortex sensor 8 is fixed on motor support pedestal 3, and stretches to motor shaft outer surface, and two current vortex sensors are 90 ° of angles to be arranged, for testing axle, is radial displacement.
Beneficial effect of the present invention:
The present invention mainly contains following feature:
(1) water pump spiral casing of the present invention's design is installed with independent mounting bracket and spiral case pedestal, vane rotor is arranged on motor shaft, motor under-chassis and motor base are installed, can realize the physical separation between spiral case and rotor, realize the vibration uncoupling of fluid excitation and mechanical excitation and electromagnetic excitation.By arrange dynamic pressure fluctuation sensor, vibration acceleration sensor on spiral case, at vane rotor place, arrange current vortex sensor, on blade, arrange wireless stress strain gauge and arrange that at bearing place and the under-chassis place of motor vibration acceleration sensor can obtain respectively the vibration transmissibility of fluid excitation source, realize the quantitative performance analysis of fluid excitation source and realize and have the design of the vibration and noise reducing of Directivity according to quantitative excitation source characteristic (containing transmission characteristics), for low noise water pump research and design provides technical support.
(2) the present invention can measure spiral case and motor be rigidly connected with physical separation two states under vibratory response, by vibration characteristics under comparative analysis two states, can obtain centrifugal pump vibration bang path, thereby can be optimized the linkage structure of electric centrifugal pump, reduce the vibration transmission of equipment.
(3) the present invention has realized the physical separation of spiral case and vane rotor and motor case, by changing volute type line structure, design, and research adopts new material, novel process to manufacture spiral case, can be used for studying worm frame or the impact of changes in material on vibration equipment, for the Low Noise Design of worm frame proposes concrete requirement.
(4) the present invention has realized the physical separation of motor case and spiral case, significantly reduced the impact of fluid excitation on motor oscillating, can change electric current quality by changing the carrier frequency (5kHz, 10kHz, 15kHz etc.) of frequency variator, to obtain drive motor drive characteristic to the influence of noise of centrifugal pump drive motor partial vibration.
Device of the present invention can be realized and will in fluid excitation and mechanical excitation and electromagnetic excitation decoupling zero situation, carry out correlation test, specifically comprises:
1) can realize the excitation of centrifugal pump fluid and mechanical excitation and electromagnetic excitation physical separation;
2) can directly carry out fluid excitation encourages static part Vibration-coupling moving element Vibration-coupling and fluid;
3) can carry out the research of centrifugal pump flow passage components structural behaviour parameter and vibration characteristics relation, for centrifugal pump list factors vary provides rule research to influence of vibration.
Accompanying drawing explanation
Fig. 1 is the principle schematic of centrifugal pump decoupling zero testing apparatus of the present invention;
Fig. 2 is centrifugal pump decoupling zero testing apparatus structural representation of the present invention;
Fig. 3 is decoupling zero seal form structural representation;
Fig. 4 is separated decoupling zero supporting structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As Fig. 1, shown in 2, a kind of decoupling zero testing apparatus of centrifugal pump, is mainly comprised of decoupled system, support system, water pump system, drive system, test system.
Decoupled system is comprised of separated decoupling zero support 2.Support system is comprised of spiral case supporting base 1, motor support pedestal 3, and water pump system 6 is comprised of parts such as the impeller of centrifugal pump, spiral cases.Drive system is comprised of drive motor 4.Test system is comprised of acceleration transducer, wireless stress strain gauge 15, dynamic pressure fluctuation sensor 7, current vortex sensor 8 and signals collecting and data analysis set-up 9 etc.
Spiral case is arranged on spiral case supporting base 1 by separated decoupling zero support 2, vane rotor is arranged on the motor shaft of drive motor 4, drive motor 4 is arranged on motor support pedestal 3, and spiral case supporting base 1 and motor support pedestal 3 are separate, make physical separation between spiral case and drive motor rotor, realize the vibration uncoupling of fluid excitation, mechanical excitation and electromagnetic excitation; On spiral case, arrange dynamic pressure fluctuation sensor 7, acceleration transducer, at vane rotor place, arrange current vortex sensor 8, on blade, arrange wireless stress strain gauge 15 and arrange acceleration transducer at bearing place and the under-chassis place of motor, and each sensor connects collection and data analysis set-up 9, for obtaining the vibration transmissibility of fluid excitation source respectively, realize quantitative performance and the quantitative excitation source specificity analysis of foundation of fluid excitation source.
According to the optional rigid support pedestal of test objective drive system or elastic support pedestal; Drive motor 4 is installed on motor support pedestal 3, the dynamic components such as impeller in water pump system 6 are installed on the outrigger shaft of drive motor 4, pump cover is installed on motor lower flange place, spiral case is by separated decoupling zero support 2(Fig. 4) be installed on spiral case supporting base 1, can realize the excitation of centrifugal pump fluid and mechanical excitation and electromagnetic excitation physical separation.
As shown in Figure 3, the pump cover after decoupling zero adopts labyrinth seal 10 to coordinate O type silica gel ring to seal 11 double seal pattern with the sealing between lower flange, guarantees the reliability of separated rear static seal.
Based on the above structure, the present invention is as described below with the test method concrete steps after mechanical excitation and the separated decoupling zero of electromagnetic excitation characteristic to the excitation of centrifugal pump fluid:
1) drive motor 4 is fixed on to motor support pedestal 3; By pump cover and motor cabinet tight joint; Impeller is installed; Mounting O-shaped silica gel sealing ring; Spiral case is installed, with locating stud location, with attachment bolt tight joint; Before tighting a bolt, between spiral case and motor cabinet, insert the thick assistant metal pad of 1mm, guarantee to leave 1mm gap between the two after tight joint; Separated decoupling zero support 2 is installed, is regulated support system, make separated decoupling zero support 2 naturally connect rear by bolton with the spiral case in water pump system 6; Remove all attachment bolts, locating stud and assistant metal pad between spiral case and motor cabinet; Complete rear low speed rotation pump shaft is installed, check assembly quality, if find the anomalies such as stuck, repeat above step, until meet the demands.
2) first and second acceleration transducer 5,14 is arranged in to drive motor 6 under-chassis positions, testing of electric motors vibration acceleration, can analyze main mechanical excitation frequency and electromagnetic excitation frequency.In signal, comprising main energizing frequency composition has: mechanical excitation is axle frequency and the harmonic frequency thereof of the axle system of rotor and impeller composition; Electromagnetic excitation is motor electromagnetic frequency and harmonic wave thereof.
3) the 3rd acceleration transducer 12 is arranged in to motor cabinet lower flange place, in water pump spiral casing corresponding position, arrange the 4th acceleration transducer 13, test two position vibration accelerations, can be by 2 test datas of comparative analysis, separation machinery excitation and the impact of electromagnetic excitation on water pump spiral casing.
4) dynamic pressure fluctuation sensor 7 is arranged on spiral case near near the 4th acceleration transducer 13, can circumferentially be evenly arranged along spiral case, from snail tongue position, start to arrange one every 90 °, the fluid excitation that test pump operation produces, this fluid excitation is not disturbed by the mechanical factors such as motor.And can record vibrating numerical by pressure pulsation numerical value and the 4th acceleration transducer 13 and contrast, analysing fluid excitation causes the size of solid wall surface vibration.Test signal medium frequency composition mainly comprises leaf frequently and the excitation of the wideband fluid of harmonic frequency and water pump herein.
5) current vortex sensor 8 is fixed on motor support pedestal 3, and stretches to motor shaft outer surface, two current vortex sensors are 90 ° of angles to be arranged, test axle is radial displacement; Wireless stress strain gauge is pasted on to impeller, can avoids analysing fluid excitation to put on the influence that axle system brings.
6) first to fourth acceleration transducer 5,12,13,14, current vortex sensor 8, wireless stress strain gauge 15, pressure pulsation sensor 7 is all connected with dynamic data collection system 9.Drive motor 4 is opened, drive motor 4 running impeller rotations, after pilot system running is stable, can open dynamic data collection system 9 and start image data, and can need to regulate motor speed, water pump operation parameter etc. according to research, repeating step 2) data capture-5), carries out the analysis of experiments under different operating modes.After gathering the corresponding time, close drive motor 4, system shuts down.
Except separated decoupling zero support 2 is installed on to spiral case side, also separated decoupling zero support 2 can be arranged on to other positions such as spiral case bottom surface and realizes physical separation; Except vertical installation, also can horizontal installation reach the effect that this testing apparatus is realized.
Claims (7)
1. the decoupling zero testing apparatus of a centrifugal pump, the spiral case that comprises centrifugal pump, be positioned at the blade of the spiral case of centrifugal pump, vane rotor, the drive motor of centrifugal pump (4), it is characterized in that: described spiral case is arranged on spiral case supporting base (1) by separated decoupling zero support (2), vane rotor is arranged on the motor shaft of drive motor (4), drive motor (4) is arranged on motor support pedestal (3), and spiral case supporting base (1) and motor support pedestal (2) are separate, make physical separation between spiral case and drive motor rotor, realize fluid excitation, the vibration uncoupling of mechanical excitation and electromagnetic excitation, on spiral case, arrange dynamic pressure fluctuation sensor (7), acceleration transducer, at vane rotor place, arrange current vortex sensor (8), on blade, arrange wireless stress strain gauge (15) and arrange acceleration transducer at bearing place and the under-chassis place of motor, and each sensor connects collection and data analysis set-up, for obtaining the vibration transmissibility of fluid excitation source respectively, realize quantitative performance and the quantitative excitation source specificity analysis of foundation of fluid excitation source.
2. the decoupling zero testing apparatus of centrifugal pump according to claim 1, it is characterized in that: described centrifugal pump, its pump cover is installed on the lower flange place of drive motor, and pump cover is the double seal pattern that labyrinth seal (10) coordinates O type silica gel ring sealing (11) with the seal style between lower flange.
3. the decoupling zero testing apparatus of centrifugal pump according to claim 1, is characterized in that: described motor support pedestal (3) is rigid support pedestal or elastic support pedestal.
4. the decoupling zero testing apparatus of centrifugal pump according to claim 1, is characterized in that: first and second acceleration transducer (5,14) is arranged in the under-chassis position of described drive motor (4), for testing of electric motors vibration acceleration.
5. the decoupling zero testing apparatus of centrifugal pump according to claim 1, it is characterized in that: the lower flange place of described drive motor (4) arranges the 3rd acceleration transducer (12), the 4th acceleration transducer (13) is arranged in spiral case corresponding position at centrifugal pump, for testing the vibration acceleration of two positions.
6. the decoupling zero testing apparatus of centrifugal pump according to claim 1, it is characterized in that: described dynamic pressure fluctuation sensor (7) is arranged on spiral case near near the 4th acceleration transducer (13), and be circumferentially evenly arranged along spiral case, from snail tongue position, start to arrange one every 90 ° the fluid excitation producing for testing pump operation.
7. the decoupling zero testing apparatus of centrifugal pump according to claim 1, it is characterized in that: described current vortex sensor (8) is fixed on motor support pedestal (3), and stretching to motor shaft outer surface, two current vortex sensors are 90 ° of angles to be arranged, for testing axle, is radial displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410605.8A CN104141618B (en) | 2014-08-20 | 2014-08-20 | The decoupling zero testing apparatus of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410605.8A CN104141618B (en) | 2014-08-20 | 2014-08-20 | The decoupling zero testing apparatus of centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104141618A true CN104141618A (en) | 2014-11-12 |
| CN104141618B CN104141618B (en) | 2016-04-13 |
Family
ID=51850902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410410605.8A Active CN104141618B (en) | 2014-08-20 | 2014-08-20 | The decoupling zero testing apparatus of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104141618B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317704A (en) * | 2015-11-26 | 2016-02-10 | 江苏大学 | Centrifugal pump operation condition judgment device and method |
| CN108254149A (en) * | 2018-01-22 | 2018-07-06 | 航天科工防御技术研究试验中心 | A kind of multi and impact combined environment testing system |
| CN106768752B (en) * | 2016-11-11 | 2018-10-26 | 哈尔滨工程大学 | A kind of centrifugal pump is interior to flow excited vibration separator and test method |
| WO2020029436A1 (en) * | 2018-08-06 | 2020-02-13 | 无锡市海星船舶动力有限公司 | Compressor impeller with rotating shaft radial pressure detection function |
| CN112255001A (en) * | 2020-10-27 | 2021-01-22 | 哈尔滨工程大学 | Excitation separation device for verifying matching characteristic of motor-impeller machinery |
| CN115682496A (en) * | 2022-12-22 | 2023-02-03 | 济南汉江光电科技有限公司 | Water cooling system for vacuum motion system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020183693A1 (en) * | 1992-09-09 | 2002-12-05 | Sims Deltec, Inc. | Drug pump systems and methods |
| CN101008407A (en) * | 2006-01-25 | 2007-08-01 | 株式会社电装 | Blower |
| CN101624992A (en) * | 2009-02-17 | 2010-01-13 | 浙江大学 | Vertical centrifugal pump of hydraulic driven type |
| CN102678582A (en) * | 2012-04-16 | 2012-09-19 | 杭州萧山美特轻工机械有限公司 | High-speed cantilever multistage turbine vacuum pump |
| CN103047124A (en) * | 2011-10-12 | 2013-04-17 | 中国石油化工股份有限公司 | Multi-function test device for measuring external characteristic and internal flow of centrifugal pump |
| CN103115001A (en) * | 2013-01-29 | 2013-05-22 | 南京工业大学 | Measurement testing device of external characteristics and internal flow of fused salt model pump |
| CN203146358U (en) * | 2012-11-09 | 2013-08-21 | 江苏大学 | Device for particle image velocimetry (PIV) error measurement and demarcation of centrifugal pump |
| CN103306996A (en) * | 2013-06-04 | 2013-09-18 | 常熟市鼓风机有限公司 | High-flow backward centrifugal fan |
| CN204113675U (en) * | 2014-08-20 | 2015-01-21 | 中国船舶重工集团公司第七0四研究所 | The decoupling zero testing apparatus of centrifugal pump |
-
2014
- 2014-08-20 CN CN201410410605.8A patent/CN104141618B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020183693A1 (en) * | 1992-09-09 | 2002-12-05 | Sims Deltec, Inc. | Drug pump systems and methods |
| CN101008407A (en) * | 2006-01-25 | 2007-08-01 | 株式会社电装 | Blower |
| CN101624992A (en) * | 2009-02-17 | 2010-01-13 | 浙江大学 | Vertical centrifugal pump of hydraulic driven type |
| CN103047124A (en) * | 2011-10-12 | 2013-04-17 | 中国石油化工股份有限公司 | Multi-function test device for measuring external characteristic and internal flow of centrifugal pump |
| CN102678582A (en) * | 2012-04-16 | 2012-09-19 | 杭州萧山美特轻工机械有限公司 | High-speed cantilever multistage turbine vacuum pump |
| CN203146358U (en) * | 2012-11-09 | 2013-08-21 | 江苏大学 | Device for particle image velocimetry (PIV) error measurement and demarcation of centrifugal pump |
| CN103115001A (en) * | 2013-01-29 | 2013-05-22 | 南京工业大学 | Measurement testing device of external characteristics and internal flow of fused salt model pump |
| CN103306996A (en) * | 2013-06-04 | 2013-09-18 | 常熟市鼓风机有限公司 | High-flow backward centrifugal fan |
| CN204113675U (en) * | 2014-08-20 | 2015-01-21 | 中国船舶重工集团公司第七0四研究所 | The decoupling zero testing apparatus of centrifugal pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317704A (en) * | 2015-11-26 | 2016-02-10 | 江苏大学 | Centrifugal pump operation condition judgment device and method |
| CN105317704B (en) * | 2015-11-26 | 2017-01-11 | 江苏大学 | Centrifugal pump operation condition judgment method |
| CN106768752B (en) * | 2016-11-11 | 2018-10-26 | 哈尔滨工程大学 | A kind of centrifugal pump is interior to flow excited vibration separator and test method |
| CN108254149A (en) * | 2018-01-22 | 2018-07-06 | 航天科工防御技术研究试验中心 | A kind of multi and impact combined environment testing system |
| WO2020029436A1 (en) * | 2018-08-06 | 2020-02-13 | 无锡市海星船舶动力有限公司 | Compressor impeller with rotating shaft radial pressure detection function |
| CN112255001A (en) * | 2020-10-27 | 2021-01-22 | 哈尔滨工程大学 | Excitation separation device for verifying matching characteristic of motor-impeller machinery |
| CN115682496A (en) * | 2022-12-22 | 2023-02-03 | 济南汉江光电科技有限公司 | Water cooling system for vacuum motion system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104141618B (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104141618B (en) | The decoupling zero testing apparatus of centrifugal pump | |
| Alfayez et al. | The application of acoustic emission for detecting incipient cavitation and the best efficiency point of a 60 kW centrifugal pump: case study | |
| CN102252836B (en) | Testing method and apparatus for supporting state, dynamic balancing state and non-centering state of rotating machine | |
| CN108801635B (en) | A kind of experimental provision and method for the variable diameter of axle sliding bearing dynamic characteristic test of series | |
| Rodriguez et al. | Monitoring of rotor-stator interaction in pump-turbine using vibrations measured with on-board sensors rotating with shaft | |
| RU2395068C2 (en) | Method of diagnostics of turbo machine impeller | |
| CN106768752B (en) | A kind of centrifugal pump is interior to flow excited vibration separator and test method | |
| CN108895018B (en) | A kind of device and method monitoring the development process of centrifugal blade cavitation | |
| CN204113675U (en) | The decoupling zero testing apparatus of centrifugal pump | |
| CN104121178A (en) | Fault diagnosis system and method for fuel delivery pump | |
| RU2451279C1 (en) | Method of diagnosing resonance vibrations in axial turbomachine impeller vanes | |
| US9989499B2 (en) | Detecting damage in an oilfield mixing device | |
| CN104154024B (en) | Realize the test decoupling device of centrifugal blower drive characteristic physical separation | |
| CN202612064U (en) | Fault diagnosis apparatus for water pump | |
| CN103629122A (en) | Detection platform realizing active control on vibration frequency of internal cavitation of centrifugal pump | |
| CN204226243U (en) | Realize the test decoupling device of the drive characteristic physical separation of centrifugal blower | |
| CN106907337A (en) | The Research on Testing System of Thrust on Aluminum and method of canned motor pump | |
| Elnady et al. | On-shaft wireless vibration measurement for condition monitoring of rotating machine | |
| Rhakasywi et al. | Safety factor of pump vibrations on ships based on the natural frequency of pump vibrations according to ISO 10816-3 | |
| CN205669464U (en) | A kind of impeller of wind turbine set imbalance test system | |
| CN206723078U (en) | The Research on Testing System of Thrust on Aluminum of canned motor pump | |
| CN203420862U (en) | Fault diagnosis device for oil delivery pump | |
| RU2757974C2 (en) | Installation for vibration testing of fast-rotating rotors | |
| Hajianto et al. | Vibration analysis for monitoring the condition of hydraulic powerpack for underground mining supporting simulation at education and training unit of underground mining (ETUUM) | |
| RU154366U1 (en) | STAND FOR VIBRATION DIAGNOSTICS OF TURBOCHARGERS OF SHIP DIESELS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Guoping Inventor after: Wang Qiang Inventor after: Chen Changsheng Inventor after: Liu Ruifeng Inventor after: Zhou Xiangrong Inventor after: Dai Xuechang Inventor after: Ma Zhenlai Inventor before: Li Guoping Inventor before: Wang Qiang Inventor before: Chen Changsheng Inventor before: Liu Ruifeng Inventor before: Zhou Xiangrong Inventor before: Dai Xuechang |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190812 Address after: 200031 Xuhui District, Hengshan Road, No. 10, Co-patentee after: SHANGHAI CSIC SHIP PROPULSION EQUIPMENT CO., LTD. Patentee after: China Shipbuilding Industry Corp seventh 0 four Institute Address before: 200031 Xuhui District, Hengshan Road, No. 10, Patentee before: China Shipbuilding Industry Corp seventh 0 four Institute |