CN105743307A - Magnetic force central line alignment method of large-sized motor - Google Patents
Magnetic force central line alignment method of large-sized motor Download PDFInfo
- Publication number
- CN105743307A CN105743307A CN201610260257.XA CN201610260257A CN105743307A CN 105743307 A CN105743307 A CN 105743307A CN 201610260257 A CN201610260257 A CN 201610260257A CN 105743307 A CN105743307 A CN 105743307A
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- China
- Prior art keywords
- motor
- rotor
- magnetic field
- hydraulic oil
- pressure
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/16—Centering rotors within the stator; Balancing rotors
Abstract
The invention discloses a magnetic force central line alignment method of a large-scaled motor. The method comprises the following steps of installing two ends of the motor on bearing seats, wherein the two ends of a motor rotor sleeve the bearing seats; enabling a high-pressure oil ejection device to be communicated with the bearing seats at the two ends of the motor through pipelines, and starting the high-pressure oil ejection device; injecting high-pressure oil into the bearing seats at the two ends of the motor to form oil films in the bearing seats, and conducting lubrication between the motor rotor and bearing bushes of the bearing seats for ejecting the motor rotor to a working position; starting the motor so that the motor rotates to a rated rotational speed and then stops; and aligning and adjusting the motor so that the alignment of the magnetic force central line of the motor rotor and a motor stator conforms to stipulated requirement. By the method, the motor is prevented from being forcedly started during motor adjustment to cause the motor rotor to be damaged without waiting for construction completion of an auxiliary oil system of the motor, and the construction period is shortened.
Description
Technical field
The present invention relates to equipment mounting technique field, be specifically related to the aligning method of a kind of large-size machine magnetic field center.
Background technology
The final centering of general large-size machine; need just can carry out after motor magnetic field center centering; and the centering of the motor magnetic line of force needs can carry out after electric machine rotation to rated speed shutdown; but due in motor centering process; motor assist oil system does not come into operation; when not lubrication; between motor rotor shaft and bearing shell, frictional force is bigger; motor not easily starts; if starting by force, easy damaged rotor shaft; if waiting, motor assist oil system working procedure completes to come into operation, then can largely effect on the duration.
Summary of the invention
The technical problem to be solved in the present invention is, in view of the foregoing defects the prior art has, it is provided that the aligning method of a kind of large-size machine magnetic field center, it is to avoid start motor when motor adjusts by force and cause rotor damaged, construct without waiting for motor assist oil system, saved the duration.
The present invention solves that above-mentioned technical problem be the technical scheme is that
The aligning method of a kind of large-size machine magnetic field center, comprises the following steps:
1) being installed on bearing block by the two ends of motor, the two ends of rotor are set on bearing block；
2) hydraulic oil jacking apparatus is connected with the bearing block at motor two ends by pipeline, start hydraulic oil jacking apparatus；
3) hydraulic oil is injected in the bearing block at motor two ends, in bearing block, form oil film, be lubricated between rotor and the bearing shell of bearing block, by rotor jacking to working position；
4) start motor, make electric machine rotation shut down to rated speed；
5) motor is carried out leveling and adjusting, make the magnetic field center para-position of rotor and motor stator meet regulation requirement.
Connect technique scheme, described step 1) in motor installation process in, need to adjust the position of motor stator and rotor, the air gap between motor stator and rotor is made to meet regulation requirement, make the center of rotor, absolute altitude and levelness meet regulation requirement, make the output shaft of motor and the power shaft concentricity of reductor meet regulation requirement.
Connect technique scheme, described step 5) after, whether the parameter of check motor reaches regulation requirement, parameter includes the air gap between motor stator and rotor, the center of rotor, absolute altitude and levelness, the power shaft concentricity of the output shaft of motor and reductor, if parameter meets regulation requirement, then installation, if parameter requirement against regulation, then readjusts the position of motor stator and rotor until reaching requirement.
Connect technique scheme, described hydraulic oil jacking apparatus includes fuel tank, high-pressure pump and electromagnetic valve, lubricating oil it is loaded with in fuel tank, high-pressure pump is arranged on fuel tank, high-pressure pump is connected with the bearing at motor two ends by pressure piping, pressure piping is sequentially provided with electromagnetic valve, filter, Pressure gauge, stop valve and high pressure connection, is docked with external pipe by high pressure connection.
Connecing technique scheme, described hydraulic oil jacking apparatus also includes check valve, and check valve is arranged on the pressure piping between filter and Pressure gauge.
Connecing technique scheme, described hydraulic oil jacking apparatus also includes overflow valve, and one end of overflow valve is connected with the outfan of electromagnetic valve and the input of filter by pressure piping, and the other end of overflow valve is connected with fuel tank by pipeline.
Connecing technique scheme, the material of described pressure piping is rustless steel.
The method have the advantages that
Extreme pressure lubricant is sent between the bearing shell of electric motor starting forward direction rotor and bearing, moment is by bearing jack-up certain interval and forms one layer of oil film, to reduce frictional force, avoid starting motor by force when motor adjusts and cause rotor damaged, construct without waiting for motor assist oil system, saved the duration.
Accompanying drawing explanation
Fig. 1 is the enforcement schematic diagram of the aligning method of the medium-and-large-sized motor magnetic field center of the embodiment of the present invention；
Fig. 2 is the structural representation of embodiment of the present invention mesohigh oil jacking apparatus；
Fig. 3 is the schematic diagram of embodiment of the present invention mesohigh oil jacking apparatus；
In figure, 1-fuel tank, 2-high-pressure pump, 3-electromagnetic valve, 4-overflow valve, 5-filter, 6-check valve, 7-Pressure gauge, 8-stop valve, 9-high pressure connection, 10-pressure piping, 11-high-pressure hose, 12-bearing block, 13-motor.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
Shown in reference Fig. 1～Fig. 2, the aligning method of the large-size machine magnetic field center in an embodiment provided by the invention, comprise the following steps:
1) being installed on bearing block 12 by the two ends of motor 13, the two ends of rotor are set on bearing block 12；
2) hydraulic oil jacking apparatus is connected with the bearing block 12 at motor 13 two ends by pipeline, start hydraulic oil jacking apparatus；
3) hydraulic oil is injected in the bearing block 12 at motor 13 two ends, in bearing block 12, form oil film, be lubricated between rotor and the bearing shell of bearing, by rotor jacking to working position；
4) start motor 13, make motor 13 shut down after turning to rated speed；
5) motor 13 is carried out leveling and adjusting, make the magnetic field center para-position of rotor and motor stator meet regulation requirement.
Extreme pressure lubricant is sent between the bearing shell that motor 13 starts forward direction rotor and bearing, moment is by bearing jack-up certain interval and forms one layer of oil film, to reduce frictional force, avoid starting motor 13 by force when motor 13 adjusts and cause rotor damaged, construct without waiting for motor assist oil system, saved the duration.
Further, described step 1) in motor 13 installation process in, need to adjust the position of motor stator and rotor, the air gap between motor stator and rotor is made to meet regulation requirement, make the center of rotor, absolute altitude and levelness meet regulation requirement, make the output shaft of motor 13 and the power shaft concentricity of reductor meet regulation requirement.
Further, described step 5) after, whether the parameter of check motor reaches regulation requirement, parameter includes the air gap between motor stator and rotor, the center of rotor, absolute altitude and levelness, the power shaft concentricity of the output shaft of motor 13 and reductor, if parameter meets regulation requirement, then installation, if parameter requirement against regulation, then readjusts the position of motor stator and rotor until reaching requirement.
As shown in Figure 3, described step 2) in hydraulic oil jacking apparatus, including fuel tank 1, high-pressure pump 2 and electromagnetic valve 3, it is loaded with lubricating oil in fuel tank 1, high-pressure pump 2 is arranged on fuel tank 1, high-pressure pump 2 is connected with the bearing at motor 13 two ends by pressure piping 10, lubricating oil in fuel tank 1 is injected in the bearing at motor 13 two ends by pipeline by high-pressure pump 2, oil film is formed in bearing block 12, it is lubricated between rotor and the bearing shell of bearing, pressure piping 10 is sequentially provided with electromagnetic valve 3, filter 5, Pressure gauge 7, stop valve 8 and high pressure connection 9, docked with external pipe by high pressure connection 9；Loine pressure can be adjusted, it is provided that the hydraulic oil of continuous-stable by hydraulic oil jacking apparatus.
Described pressure piping 10 is stainless steel tube；
Described hydraulic oil jacking apparatus also includes check valve 6, and check valve 6 is arranged on the pressure piping 10 between filter 5 and Pressure gauge 7.
Described hydraulic oil jacking apparatus also includes overflow valve 4, and one end of overflow valve 4 is connected with the outfan of electromagnetic valve 3 and the input of filter 5 by pressure piping 10, and the other end of overflow valve 4 is connected with fuel tank 1 by pipeline.
Further, the pipeline being connected between hydraulic oil jacking apparatus with bearing block 12 is high-pressure hose 11.
Above is only presently preferred embodiments of the present invention, certainly with this interest field limiting the present invention, therefore can not change according to the equivalence that the present patent application the scope of the claims is made, still belong to protection scope of the present invention.
Claims (7)
1. the aligning method of a large-size machine magnetic field center, it is characterised in that comprise the following steps:
1) being installed on bearing block by the two ends of motor, the two ends of rotor are set on bearing block；
2) hydraulic oil jacking apparatus is connected with the bearing block at motor two ends by pipeline, start hydraulic oil jacking apparatus；
3) hydraulic oil is injected in the bearing block at motor two ends, in bearing block, form oil film, be lubricated between rotor and the bearing shell of bearing block, by rotor jacking to working position；
4) start motor, make electric machine rotation shut down to rated speed；
5) motor is carried out leveling and adjusting, make the magnetic field center para-position of rotor and motor stator meet regulation requirement.
2. the aligning method of large-size machine magnetic field center according to claim 1, it is characterized in that, described step 1) in motor installation process in, need to adjust the position of motor stator and rotor, the air gap between motor stator and rotor is made to meet regulation requirement, make the center of rotor, absolute altitude and levelness meet regulation requirement, make the output shaft of motor and the power shaft concentricity of reductor meet regulation requirement.
3. the aligning method of large-size machine magnetic field center according to claim 1, it is characterized in that, described step 5) after, whether the parameter of check motor reaches regulation requirement, parameter includes the air gap between motor stator and rotor, the center of rotor, absolute altitude and levelness, the power shaft concentricity of the output shaft of motor and reductor, if parameter meets regulation requirement, then installation, if parameter requirement against regulation, then readjust the position of motor stator and rotor until reaching requirement.
4. the aligning method of large-size machine magnetic field center according to claim 1, it is characterized in that, described hydraulic oil jacking apparatus includes fuel tank, high-pressure pump and electromagnetic valve, lubricating oil it is loaded with in fuel tank, high-pressure pump is arranged on fuel tank, high-pressure pump is connected with the bearing at motor two ends by pressure piping, pressure piping is sequentially provided with electromagnetic valve, filter, Pressure gauge, stop valve and high pressure connection, is docked with external pipe by high pressure connection.
5. the aligning method of large-size machine magnetic field center according to claim 4, it is characterised in that described hydraulic oil jacking apparatus also includes check valve, and check valve is arranged on the pressure piping between filter and Pressure gauge.
6. the aligning method of large-size machine magnetic field center according to claim 5, it is characterized in that, described hydraulic oil jacking apparatus also includes overflow valve, one end of overflow valve is connected with the outfan of electromagnetic valve and the input of filter by pressure piping, and the other end of overflow valve is connected with fuel tank by pipeline.
7. the aligning method of large-size machine magnetic field center according to claim 4, it is characterised in that the material of described pressure piping is rustless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610260257.XA CN105743307A (en) | 2016-04-25 | 2016-04-25 | Magnetic force central line alignment method of large-sized motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610260257.XA CN105743307A (en) | 2016-04-25 | 2016-04-25 | Magnetic force central line alignment method of large-sized motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105743307A true CN105743307A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610260257.XA Pending CN105743307A (en) | 2016-04-25 | 2016-04-25 | Magnetic force central line alignment method of large-sized motor |
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| Country | Link |
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| CN (1) | CN105743307A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002153016A (en) * | 2000-11-08 | 2002-05-24 | Sankyo Seiki Mfg Co Ltd | Geared motor |
| CN101234731A (en) * | 2008-03-11 | 2008-08-06 | 镇江中船现代发电设备有限公司 | Internal-swelling type stator hoisting special purpose tools |
| CN103453829A (en) * | 2013-09-12 | 2013-12-18 | 中国能源建设集团天津电力建设公司 | Method for measuring sliding bearing motor magnetic force central position |
-
2016
- 2016-04-25 CN CN201610260257.XA patent/CN105743307A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002153016A (en) * | 2000-11-08 | 2002-05-24 | Sankyo Seiki Mfg Co Ltd | Geared motor |
| CN101234731A (en) * | 2008-03-11 | 2008-08-06 | 镇江中船现代发电设备有限公司 | Internal-swelling type stator hoisting special purpose tools |
| CN103453829A (en) * | 2013-09-12 | 2013-12-18 | 中国能源建设集团天津电力建设公司 | Method for measuring sliding bearing motor magnetic force central position |
Non-Patent Citations (1)
| Title |
|---|
| 高伟等: ""大型交流变频同步电机安装方法"", 《山西科技》 * |
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Application publication date: 20160706 |
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| RJ01 | Rejection of invention patent application after publication |