CN102158016A - Method for installing capacitance type air gap sensors of water-wheel generator - Google Patents
Method for installing capacitance type air gap sensors of water-wheel generator Download PDFInfo
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- CN102158016A CN102158016A CN201110036424XA CN201110036424A CN102158016A CN 102158016 A CN102158016 A CN 102158016A CN 201110036424X A CN201110036424X A CN 201110036424XA CN 201110036424 A CN201110036424 A CN 201110036424A CN 102158016 A CN102158016 A CN 102158016A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 22
- 238000005516 engineering process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010057855 Hypotelorism of orbit Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a method for installing capacitance type air gap sensors of a water-wheel generator. The method comprises the following steps of: (1) dismounting one magnetic pole from a rotor of the water-wheel generator so that an operation space is formed between a stator and the rotor of the water-wheel generator; (2) installing an operation platform in the operation space, wherein one end of the operation platform is fixed on a rotor supporting arm and the other end of the operation platform is a platform for operators to work; (3) installing the first capacitance type air gap sensor on the operation platform by the operators; and (4) dismounting the operation platform and installing the magnetic pole dismounted in the step (1). Since only one magnetic pole of the rotor is dismounted and the whole rotor does not need to be lifted out, the construction period is short and the cost is low; in addition, since the rotor does not need to be reinstalled, dynamic balance of the rotor is not damaged, the stability of shafting does not need to be detected again, and the construction process is simplified.
Description
Technical field
The invention belongs to the technical field that electric power is used, relate to a kind of method that hydraulic generator condenser type air gap transducer is installed particularly.
Background technology
Hydraulic generator is the most important electromechanical equipment in hydroelectric plant, involves great expense, in case the economic loss that breaks down is huge.Generator is generally formed (see figure 1) by stator, rotor two parts, when unit operation, huge rotor is high speed rotating under the drive of the hydraulic turbine, air gap between rotor outer and the stator inner wall only is tens of millimeters, in case generator amature because of factor generation mechanical deformations such as centrifugal force, heating power, vibration force, magnetic force, causes between rotor and the stator hypotelorism even contacts, the rotor of high speed rotating can break stator component, produce serious consequence, cause the air gap accident.Serious air gap accident both can cause generator to damage, and can grow (generally can reach 36 months) and cause to stop transport and lose owing to the cycle of buying and installing the equipment that upgrades again, and economic loss is huge.
Dynamically the air gap monitoring is a kind of device of measuring salient pole type hydraulic generator distance between any running status rotor and stator; main by the air gap variation between monitoring and analysis hydraulic generator rotor in service; realization monitors the dynamic characteristic of generator amature and stator structure; help accurate diagnosing abnormal situation, find potential faults, the plan of science formulation repair and maintenance early, avoid being caused damage by forced-stopping machine.
Present stage, the dynamic breath monitoring device of hydraulic generator generally adopts air gap electrostatic capacitance measuring technique.Dynamically the air gap monitoring device is made up of the capacity plate antenna formula air gap transducer, signal conditioner, signal cable and the backstage industrial computer that are installed between the generator stator-rotator.Condenser type air gap transducer generally adopts adhesive to be bonded in the stator core surface because volume is less, in light weight.
(air gap distance difference between the different rotors of unit form generally is about 20～30mm), causes condenser type air gap transducer installation difficulty owing to air-gap spacing between the generator stator-rotator is very little.Because transducer need be installed between the generator stator-rotator, it is too small to add between the generator stator-rotator gap, does not have enough installing spaces, and therefore, existing mounting means is for hanging out generator amature in the machine hole, and then installs.If will hang out rotor, at first need carry out machine cap dismounting on the generator, the oil extraction of thrust bearing oil groove, thrust bearing is removed, and upper bracket is removed, and generator amature could be removed then, carries out the air gap transducer and installs.After transducer is installed, also need parts such as generator amature, upper bracket, thrust bearing are returned dress, adjust at last and test.The drawback of existing mounting means is:
Long in time limit under the situation that working space is protected, the set-up time of power generator air gap transducer itself only needs 2～3 days.But owing to for transducer installation exercise space can be provided, carry out the generator hanger rotor, cause the workload sharp increase, the whole duration generally needs about 30 days.
The operating expenses height carries out the generator amature lifting, and quantities approaches the overhaul of generator standard type, and the engineering construction expense is very high.Add generator and stopped transport 30 days continuously, the stoppage in transit economic loss that causes thus is inestimable especially.
Technical risk is big, and high generator amature of difficulty of construction and rotary wheel of water turbine etc. are gone up the heavy metal parts high speed rotating when generator operation of kiloton, and its weight only depends on the top thrust bearing to bear.Because generator amature bulky, quality are higher, carry out to ensure that the dynamic balancing of generator amature is not destroyed behind the integral disassembly, assembly, can guarantee that axle system is stable, guarantee that the axial throw of rotor when high speed rotating is within 0.1～0.3mm, there is certain technical risk in the technical complexity height.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, the method that a kind of installation period is short, operating expenses is low, construction technology is simply installed hydraulic generator condenser type air gap transducer is provided.
Technical solution of the present invention is: the method for this installation hydraulic generator condenser type air gap transducer may further comprise the steps:
(1) epitrochanterian magnetic pole of hydraulic generator is removed, so that between the stator of hydraulic generator and rotor, form working space;
(2) installation exercise platform in working space, an end of this job platform is fixed on the rotor support arm, and the other end is the platform that is made for industry personnel construction;
(3) operating personnel finishes the installation of first condenser type air gap transducer on platform;
(4) remove job platform, the magnetic pole that installation steps (1) are removed.
Owing to only a magnetic pole of rotor is removed, and whole rotor need not be hung out, so the construction period is short, expense is low, and because need not reinstall rotor again, so the dynamic balancing of rotor does not destroy, just do not need to detect again the stability of axle system, simplified construction technology.
Description of drawings
Fig. 1 shows the structural representation of hydraulic generator;
Fig. 2 shows the structural representation according to job platform of the present invention.
Embodiment
The method of this installation hydraulic generator condenser type air gap transducer may further comprise the steps:
(1) the epitrochanterian magnetic pole 2 of hydraulic generator is removed, so that between the stator 1 of hydraulic generator and rotor, form working space;
(2) installation exercise platform 4 in working space, an end of this job platform is fixed on the rotor support arm 3, and the other end is the platform that is made for industry personnel construction;
(3) operating personnel finishes the installation (generally adopt adhesive bonding) of first condenser type air gap transducer on platform;
(4) remove job platform, the magnetic pole that installation steps (1) are removed.
Fig. 2 shows the structural representation according to job platform 4 of the present invention.This job platform can be metal and makes, and a side is fixed on the rotor support arm, can rotate with rotor.Platform side welding stile is so that the operating personnel is easy for going up and down.The platform bed-plate dimension is slightly less than removes the space that forms behind the magnetic pole, and the basis is provided during for operating personnel's sensor installation.
Preferably, if installation is more than 1 condenser type air gap transducer, step (3) also comprises: electric barring equipment is installed at last machine cap place, use the electric barring equipment rotary rotor behind second installation site, second condenser type air gap transducer is installed, and the installation of residual capacitance formula air gap transducer is carried out successively.
The above; it only is preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs to the protection range of technical solution of the present invention to any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. method that hydraulic generator condenser type air gap transducer is installed is characterized in that this method may further comprise the steps:
(1) epitrochanterian magnetic pole of hydraulic generator is removed, so that between the stator of hydraulic generator and rotor, form working space;
(2) installation exercise platform in working space, an end of this job platform is fixed on the rotor support arm, and the other end is the platform that is made for industry personnel construction;
(3) operating personnel finishes the installation of first condenser type air gap transducer on platform;
(4) remove job platform, the magnetic pole that installation steps (1) are removed.
2. the method for installation hydraulic generator condenser type air gap transducer according to claim 1, it is characterized in that, if installation is more than 1 condenser type air gap transducer, step (3) also comprises: electric barring equipment is installed at last machine cap place, use the electric barring equipment rotary rotor behind second installation site, second condenser type air gap transducer is installed, and the installation of residual capacitance formula air gap transducer is carried out successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110036424A CN102158016B (en) | 2011-02-11 | 2011-02-11 | Method for installing capacitance type air gap sensors of water-wheel generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110036424A CN102158016B (en) | 2011-02-11 | 2011-02-11 | Method for installing capacitance type air gap sensors of water-wheel generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102158016A true CN102158016A (en) | 2011-08-17 |
| CN102158016B CN102158016B (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110036424A Expired - Fee Related CN102158016B (en) | 2011-02-11 | 2011-02-11 | Method for installing capacitance type air gap sensors of water-wheel generator |
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| Country | Link |
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| CN (1) | CN102158016B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017157679A1 (en) * | 2016-03-17 | 2017-09-21 | Voith Patent Gmbh | Device for monitoring the air gap of an electric machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2117588U (en) * | 1992-03-18 | 1992-09-30 | 水利部、能源部地质勘探机电研究所 | Plate condenser type displacement sensor |
| CN1148751A (en) * | 1995-08-08 | 1997-04-30 | 株式会社东芝 | Electrostatic capacity metering device for stator winding of rotary motor |
| US20020047349A1 (en) * | 2000-08-19 | 2002-04-25 | Lee Ka-Lun | Electric motor |
| US20070273223A1 (en) * | 2006-05-25 | 2007-11-29 | Ward Terence G | Power capacitors mounted diametrically on electric motors |
-
2011
- 2011-02-11 CN CN201110036424A patent/CN102158016B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2117588U (en) * | 1992-03-18 | 1992-09-30 | 水利部、能源部地质勘探机电研究所 | Plate condenser type displacement sensor |
| CN1148751A (en) * | 1995-08-08 | 1997-04-30 | 株式会社东芝 | Electrostatic capacity metering device for stator winding of rotary motor |
| US20020047349A1 (en) * | 2000-08-19 | 2002-04-25 | Lee Ka-Lun | Electric motor |
| US20070273223A1 (en) * | 2006-05-25 | 2007-11-29 | Ward Terence G | Power capacitors mounted diametrically on electric motors |
Non-Patent Citations (3)
| Title |
|---|
| 《中国水利水电科学研究院学报》 20080331 张瑞杰，杨虹 水轮发电机空气间隙监测技术的应用 第60-65页 1-2 第6卷, 第1期 * |
| 《水电站机电技术》 19980831 加拿大安大略电力公司G.B.Pollock,J.F.Lyles 竖轴水轮发电机空气间隙动态监测方面的经验 第71-75页 1-2 , 第4期 * |
| 《江西电力》 20051031 肖孝锋，徐擎天，孙建平 水轮发电机组气隙状态监测系统的实现 第11-15页 1-2 第29卷, 第5期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017157679A1 (en) * | 2016-03-17 | 2017-09-21 | Voith Patent Gmbh | Device for monitoring the air gap of an electric machine |
| CN108781025A (en) * | 2016-03-17 | 2018-11-09 | 福伊特专利有限公司 | Device for the air gap for monitoring motor |
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| Publication number | Publication date |
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| CN102158016B (en) | 2012-09-05 |
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Owner name: STATE GRID CORPORATION OF CHINA STATE GRID XINYUAN Effective date: 20121116 |
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Effective date of registration: 20121116 Address after: 132400 production technology department, Baishan power plant, No. 274, Huadian Avenue, Huadian, Jilin Patentee after: BAISHAN POWER PLANT Patentee after: State Grid Corporation of China Patentee after: STATE GRID XINYUAN WATER AND ELECTRICITY Co.,Ltd. Address before: 132400 production technology department, Baishan power plant, No. 274, Huadian Avenue, Huadian, Jilin Patentee before: Baishan Power Plant |
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| TR01 | Transfer of patent right |
Effective date of registration: 20171213 Address after: 132000 Jilin Jilin Huadian Baishan town production complex building Co-patentee after: State Grid Corporation of China Patentee after: JILIN BAISHAN POWER PLANT OF SONGHUAJIANG HYDROELECTRIC POWER CO.,LTD. Co-patentee after: STATE GRID XINYUAN WATER AND ELECTRICITY Co.,Ltd. Address before: 132400 production technology department, Baishan power plant, No. 274, Huadian Avenue, Huadian, Jilin Co-patentee before: State Grid Corporation of China Patentee before: Baishan Power Plant Co-patentee before: STATE GRID XINYUAN WATER AND ELECTRICITY Co.,Ltd. |
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Granted publication date: 20120905 |
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