CN109307471A - A kind of nuclear power station main feed pump axial displacement sensor zero point scaling method - Google Patents
A kind of nuclear power station main feed pump axial displacement sensor zero point scaling method Download PDFInfo
- Publication number
- CN109307471A CN109307471A CN201811345081.3A CN201811345081A CN109307471A CN 109307471 A CN109307471 A CN 109307471A CN 201811345081 A CN201811345081 A CN 201811345081A CN 109307471 A CN109307471 A CN 109307471A
- Authority
- CN
- China
- Prior art keywords
- axial displacement
- pump shaft
- pump
- value
- sensor
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The present invention relates to a kind of nuclear power station main feed pump axial displacement sensor zero point scaling methods, comprising the following steps: pump shaft rotation round is divided into n equal part by the first step；Pump shaft, is defined as the negative direction of axial displacement by second step, the positive direction that the driving motor side that pump shaft pushes pump to is defined as to axial displacement away from driving motor side；Third step is recorded in the sensor axis shift value after pump shaft holding is boosted and unclamped；4th step rotates pump shaft according to the direction of rotation that pump operates normally；5th step finds out maximum sensor axial displacement value Smax of each Along ent after unclamping pump shaft；6th step finds out maximum difference Hmax；Sensor axis shift value after 7th step, record release, is labeled as a；8th step, the offset C for calculating Zero calibration；9th step, according to the resulting offset C of the 8th step, axle position displacement sensor is positioned.Using the adverse effect this invention removes tile fragment bullet amount to Zero calibration accuracy, the exact level of calibration is improved.
Description
Technical field
The invention belongs to analyze and survey control technology field, and in particular to a kind of nuclear power station main feed pump axial displacement sensing
Device Zero calibration method
Background technique
Main feed pump is the key that nuclear power station secondary loop power-equipment, bears to steam generator secondary side and is supplied to
Water ensures the effect sufficiently to exchange heat.In existing kilowatt pressurized water reactor nuclear power station, main feed pump non-driven-end bearing room
1 electric vortex type axle position displacement sensor of common design, major function is monitoring pump shaft change in displacement, to reflect thrust disc and push away
The relative position of power bearing avoids thrust bearing shoe valve inordinate wear, ensures equipment operational safety.In work such as main feed pump Disintegration overhauls
Later, it needs axle position displacement sensor re-starting Zero calibration, accurately to show the axial displacement in main feed pump operational process
Amount.
Since traditional axial displacement sensor zero point scaling method accuracy is insufficient, cause in certain million kilowatt presurized water reactor
In the application process of nuclear power station, the high alarm failure of multiple axial displacement is produced, the availability of main feed pump is reduced, affected and be
The safe and reliable operation of system and unit.
Therefore, a kind of more reliable main feed pump axial displacement sensor zero point scaling method is developed, to equipment and unit
Safe and reliable operation it is most important.
Summary of the invention
It is an object of the invention to: a kind of nuclear power station main feed pump axial displacement sensor zero point scaling method is provided, it is intended to
Eliminate existing Zero calibration method accuracy it is low and cause main feed pump axial displacement height alarm, and thus caused by main feed pump
The low problem low with unit operation stability of availability.
Technical scheme is as follows: a kind of nuclear power station main feed pump axial displacement sensor zero point scaling method, including
Following steps:
The first step, along pump shaft direction of rotation, pump shaft rotation round is divided into n equal part, and carry out serial number label；
Second step, the positive direction that the driving motor side that pump shaft pushes pump to is defined as to axial displacement, by pump shaft away from driving electricity
Pusher side is defined as the negative direction of axial displacement, difference of the record pump shaft in the axial displacement value on two sides top；
Pump shaft is positioned any Along ent marked in the first step by third step, then pushes pump shaft to pump driving electricity
Then pusher side unclamps until sensor axis shift value no longer increases, be separately recorded in pump shaft and keep after boosting and unclamping
Sensor axis shift value；
4th step rotates pump shaft according to the direction of rotation that pump operates normally, and is sequentially recorded in remaining each Along ent for pump shaft
Keep the sensor axis shift value after boosting and unclamping；
5th step finds out maximum sensor axial displacement value Smax and its Along ent of each Along ent after unclamping pump shaft
Serial number；
6th step calculates separately the difference that the sensor axis shift value after pump shaft is boosted and unclamped by each Along ent subtracts each other
Value, and find out maximum difference Hmax；
7th step rotates pump shaft to the Along ent of maximum axial displacement value Smax, pushes pump shaft to behind driving motor side pine
It opens, the sensor axis shift value after record release is labeled as a；
8th step, the offset C for calculating Zero calibration are as follows:
9th step, according to the resulting offset C of the 8th step, by axle position displacement sensor to driving motor side moving distance C, so
Axle position displacement sensor is positioned afterwards, that is, completes the calibration of axial displacement sensor zero point.
Preferably, in the first step, the n is 4-12.
Preferably, in second step, the difference of the axial displacement value on the two sides top is the thrust clearance of rotor.
Preferably, push pump shaft to pump driving motor side using with crowbar.
Preferably, in the 6th step, the difference that the shift value subtracts each other is absolute value, remaining numerical value is algebraic value.
Preferably, in the 5th step, if sensor displacement value is negative after the release of whole Along ents, should again into
The row first step is to the 4th step.
Remarkable result of the invention is: 1) eliminating tile fragment bullet amount to the adverse effect of Zero calibration accuracy, improve
The exact level of calibration；2) the circumferential movement inconsistency of tile fragment group is eliminated to the adverse effect of Zero calibration, is improved
The exact level of calibration；3) according to the method for the present invention, in the main water supply of certain million kilowatt Class PWR Plants 1-4 unit APA
Pump shaft displacement sensor implements Zero calibration, thoroughly solve the axial displacement height that is generated because Zero calibration accuracy is low alarm therefore
Barrier, achieves good result；4) this method does not pass through the strength jack-up rotor such as jack, has both avoided because excessive compression causes to push away
The deformation of power tiling even with parts damages caused by the reasons such as thrust disc " sucking ", also improves working efficiency.
Specific embodiment
Combined with specific embodiments below to a kind of nuclear power station main feed pump axial displacement sensor zero point mark of the present invention
The method of determining is described in further detail.
A kind of nuclear power station main feed pump axial displacement sensor zero point scaling method, comprising the following steps:
The first step, along pump shaft direction of rotation, pump shaft rotation round is divided into n equal part, and carry out serial number label；
Second step, the positive direction that the driving motor side that pump shaft pushes pump to is defined as to axial displacement, by pump shaft away from driving electricity
Pusher side is defined as the negative direction of axial displacement, difference of the record pump shaft in the axial displacement value on two sides top；
Pump shaft is positioned any Along ent marked in the first step by third step, then pushes pump shaft to pump driving electricity
Then pusher side unclamps until sensor axis shift value no longer increases, be separately recorded in pump shaft and keep after boosting and unclamping
Sensor axis shift value；
4th step rotates pump shaft according to the direction of rotation that pump operates normally, and is sequentially recorded in remaining each Along ent for pump shaft
Keep the sensor axis shift value after boosting and unclamping；
5th step finds out maximum sensor axial displacement value Smax and its Along ent of each Along ent after unclamping pump shaft
Serial number；
6th step calculates separately the difference that the sensor axis shift value after pump shaft is boosted and unclamped by each Along ent subtracts each other
Value, and find out maximum difference Hmax；
7th step rotates pump shaft to the Along ent of maximum axial displacement value Smax, pushes pump shaft to behind driving motor side pine
It opens, the sensor axis shift value after record release is labeled as a；
8th step, the offset C for calculating Zero calibration are as follows:
9th step, according to the resulting offset C of the 8th step, by axle position displacement sensor to driving motor side moving distance C, so
Axle position displacement sensor is positioned afterwards, that is, completes the calibration of axial displacement sensor zero point.
Preferably, in the first step, the n is 4-12.
Preferably, in second step, the difference of the axial displacement value on the two sides top is the thrust clearance of rotor.
Preferably, push pump shaft to pump driving motor side using with crowbar.
Preferably, in the 6th step, the difference that the shift value subtracts each other is absolute value, remaining numerical value is algebraic value.
Preferably, in the 5th step, if sensor displacement value is negative after the release of whole Along ents, should again into
The row first step is to the 4th step.
Claims (6)
1. a kind of nuclear power station main feed pump axial displacement sensor zero point scaling method, which comprises the following steps:
The first step, along pump shaft direction of rotation, pump shaft rotation round is divided into n equal part, and carry out serial number label；
Pump shaft is deviated from driving motor side by second step, the positive direction that the driving motor side that pump shaft pushes pump to is defined as to axial displacement
It is defined as the negative direction of axial displacement, difference of the record pump shaft in the axial displacement value on two sides top；
Pump shaft is positioned any Along ent marked in the first step by third step, then pushes pump shaft to pump driving motor side,
It until sensor axis shift value no longer increases, then unclamps, is separately recorded in pump shaft and keeps the sensing after boosting and unclamping
Device axial displacement value；
4th step rotates pump shaft according to the direction of rotation that pump operates normally, and is sequentially recorded in remaining each Along ent and keeps pump shaft
Sensor axis shift value after boosting and unclamping；
5th step, the serial number for finding out maximum sensor axial displacement value Smax and its Along ent of each Along ent after unclamping pump shaft；
6th step calculates separately the difference that the sensor axis shift value after pump shaft is boosted and unclamped by each Along ent subtracts each other, and
Find out maximum difference Hmax；
7th step rotates pump shaft to the Along ent of maximum axial displacement value Smax, unclamps after pushing pump shaft to driving motor side, note
Sensor axis shift value after record release, is labeled as a；
8th step, the offset C for calculating Zero calibration are as follows:
9th step, according to the resulting offset C of the 8th step, by axle position displacement sensor to driving motor side moving distance C, then will
Axle position displacement sensor is positioned, that is, completes the calibration of axial displacement sensor zero point.
2. a kind of nuclear power station main feed pump axial displacement sensor zero point scaling method as described in claim 1, it is characterised in that:
In the first step, the n is 4-12.
3. a kind of nuclear power station main feed pump axial displacement sensor zero point scaling method as described in claim 1, it is characterised in that:
In second step, the difference of the axial displacement value on the two sides top is the thrust clearance of rotor.
4. a kind of nuclear power station main feed pump axial displacement sensor zero point scaling method as described in claim 1, it is characterised in that:
Push pump shaft to pump driving motor side using with crowbar.
5. a kind of nuclear power station main feed pump axial displacement sensor zero point scaling method as described in claim 1, it is characterised in that:
In 6th step, the difference that the shift value subtracts each other is absolute value, remaining numerical value is algebraic value.
6. a kind of nuclear power station main feed pump axial displacement sensor zero point scaling method as described in claim 1, it is characterised in that:
In 5th step, if sensor displacement value is negative after the release of whole Along ents, the first step should be re-started to the 4th
Step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345081.3A CN109307471B (en) | 2018-11-13 | 2018-11-13 | Zero calibration method for displacement sensor of main water supply pump shaft of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345081.3A CN109307471B (en) | 2018-11-13 | 2018-11-13 | Zero calibration method for displacement sensor of main water supply pump shaft of nuclear power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109307471A true CN109307471A (en) | 2019-02-05 |
| CN109307471B CN109307471B (en) | 2020-08-21 |
Family
ID=65221892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811345081.3A Active CN109307471B (en) | 2018-11-13 | 2018-11-13 | Zero calibration method for displacement sensor of main water supply pump shaft of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109307471B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284738A (en) * | 2020-09-10 | 2021-01-29 | 福建福清核电有限公司 | Axial displacement measurement and zero point calibration method for nuclear power steam turbine unit |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03137530A (en) * | 1989-10-24 | 1991-06-12 | Nippon Seiko Kk | Displacement sensor and torque sensor |
| JP2010181195A (en) * | 2009-02-03 | 2010-08-19 | Nagase Integrex Co Ltd | Shape measuring device |
| CN102039316A (en) * | 2009-10-10 | 2011-05-04 | 北京理工大学 | Zero-point calibration method for hot continuous rolling machine frame |
| CN202501835U (en) * | 2012-03-16 | 2012-10-24 | 成都飞机设计研究所 | Vertical type linear displacement sensor scaling/calibrating device |
| CN202607493U (en) * | 2012-06-26 | 2012-12-19 | 徐维钧 | Inner zero-setting measuring device |
| CN103196410A (en) * | 2013-04-03 | 2013-07-10 | 广东富华工程机械制造有限公司 | Automobile hub bearing axial clearance measuring instrument and using method of same |
| CN103506955A (en) * | 2013-09-12 | 2014-01-15 | 上海交通大学 | Inner spherical surface ring precise grinding on-line detecting device and automatic inner spherical surface ring precise grinding on-line detecting method |
| CN103868491A (en) * | 2014-03-17 | 2014-06-18 | 中联重科股份有限公司 | Zero calibration device and zero calibration method for electrohydraulic control steering axle |
| CN104019929A (en) * | 2014-06-11 | 2014-09-03 | 中国船舶重工集团公司第七0四研究所 | Online rotating shaft torque measurement method based on relative displacement measurement of eddy current |
| CN104048588A (en) * | 2014-06-25 | 2014-09-17 | 中国科学院长春光学精密机械与物理研究所 | Calibration device for plate condenser displacement sensor |
| CN104075652A (en) * | 2014-07-02 | 2014-10-01 | 中国科学院长春光学精密机械与物理研究所 | Calibration device for capacitance displacement sensor |
| CN204255320U (en) * | 2014-11-14 | 2015-04-08 | 中国航空工业第六一八研究所 | A kind of zeroing locking mechanism of telescopic linear movement pick-up |
| CN204255319U (en) * | 2014-11-14 | 2015-04-08 | 中国航空工业第六一八研究所 | A kind of stepless-adjustment zero structure of linear movement pick-up |
| CN104624999A (en) * | 2014-11-27 | 2015-05-20 | 中冶连铸技术工程有限责任公司 | Roll gap calibration device and method for square billet tension leveler |
| CN104677929A (en) * | 2015-03-20 | 2015-06-03 | 中国工程物理研究院总体工程研究所 | Method for measuring volume expansion coefficient of shell |
| CN105606052A (en) * | 2016-01-20 | 2016-05-25 | 天津大学 | Micro displacement sensor calibration apparatus based on high-precision rectilinear translation bench |
| CN105783820A (en) * | 2016-03-18 | 2016-07-20 | 中国直升机设计研究所 | Helicopter level displacement sensor zero adjustment device and zero adjustment method |
| CN205426121U (en) * | 2016-03-03 | 2016-08-03 | 重庆长安汽车股份有限公司 | Bent axle axle clearance detects demarcation frock of machine |
| CN207540500U (en) * | 2017-12-08 | 2018-06-26 | 深圳伊讯科技有限公司 | A kind of displacement sensor |
| CN108694298A (en) * | 2018-07-04 | 2018-10-23 | 温州大学 | A kind of axial plunger pump bearing inner race and outer ring method for diagnosing faults |
-
2018
- 2018-11-13 CN CN201811345081.3A patent/CN109307471B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03137530A (en) * | 1989-10-24 | 1991-06-12 | Nippon Seiko Kk | Displacement sensor and torque sensor |
| JP2010181195A (en) * | 2009-02-03 | 2010-08-19 | Nagase Integrex Co Ltd | Shape measuring device |
| CN102039316A (en) * | 2009-10-10 | 2011-05-04 | 北京理工大学 | Zero-point calibration method for hot continuous rolling machine frame |
| CN202501835U (en) * | 2012-03-16 | 2012-10-24 | 成都飞机设计研究所 | Vertical type linear displacement sensor scaling/calibrating device |
| CN202607493U (en) * | 2012-06-26 | 2012-12-19 | 徐维钧 | Inner zero-setting measuring device |
| CN103196410A (en) * | 2013-04-03 | 2013-07-10 | 广东富华工程机械制造有限公司 | Automobile hub bearing axial clearance measuring instrument and using method of same |
| CN103506955A (en) * | 2013-09-12 | 2014-01-15 | 上海交通大学 | Inner spherical surface ring precise grinding on-line detecting device and automatic inner spherical surface ring precise grinding on-line detecting method |
| CN103868491A (en) * | 2014-03-17 | 2014-06-18 | 中联重科股份有限公司 | Zero calibration device and zero calibration method for electrohydraulic control steering axle |
| CN104019929A (en) * | 2014-06-11 | 2014-09-03 | 中国船舶重工集团公司第七0四研究所 | Online rotating shaft torque measurement method based on relative displacement measurement of eddy current |
| CN104048588A (en) * | 2014-06-25 | 2014-09-17 | 中国科学院长春光学精密机械与物理研究所 | Calibration device for plate condenser displacement sensor |
| CN104075652A (en) * | 2014-07-02 | 2014-10-01 | 中国科学院长春光学精密机械与物理研究所 | Calibration device for capacitance displacement sensor |
| CN204255320U (en) * | 2014-11-14 | 2015-04-08 | 中国航空工业第六一八研究所 | A kind of zeroing locking mechanism of telescopic linear movement pick-up |
| CN204255319U (en) * | 2014-11-14 | 2015-04-08 | 中国航空工业第六一八研究所 | A kind of stepless-adjustment zero structure of linear movement pick-up |
| CN104624999A (en) * | 2014-11-27 | 2015-05-20 | 中冶连铸技术工程有限责任公司 | Roll gap calibration device and method for square billet tension leveler |
| CN104677929A (en) * | 2015-03-20 | 2015-06-03 | 中国工程物理研究院总体工程研究所 | Method for measuring volume expansion coefficient of shell |
| CN105606052A (en) * | 2016-01-20 | 2016-05-25 | 天津大学 | Micro displacement sensor calibration apparatus based on high-precision rectilinear translation bench |
| CN205426121U (en) * | 2016-03-03 | 2016-08-03 | 重庆长安汽车股份有限公司 | Bent axle axle clearance detects demarcation frock of machine |
| CN105783820A (en) * | 2016-03-18 | 2016-07-20 | 中国直升机设计研究所 | Helicopter level displacement sensor zero adjustment device and zero adjustment method |
| CN207540500U (en) * | 2017-12-08 | 2018-06-26 | 深圳伊讯科技有限公司 | A kind of displacement sensor |
| CN108694298A (en) * | 2018-07-04 | 2018-10-23 | 温州大学 | A kind of axial plunger pump bearing inner race and outer ring method for diagnosing faults |
Non-Patent Citations (1)
| Title |
|---|
| 罗伟新 等: "基桩抗压静载荷试验数据的质量控制方法研究", 《工程质量》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284738A (en) * | 2020-09-10 | 2021-01-29 | 福建福清核电有限公司 | Axial displacement measurement and zero point calibration method for nuclear power steam turbine unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109307471B (en) | 2020-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109307471A (en) | A kind of nuclear power station main feed pump axial displacement sensor zero point scaling method | |
| US20110109087A1 (en) | Geothermal power plant | |
| CN114320501B (en) | Disassembly and installation process for steam turbine of chemical power station | |
| CN113237577B (en) | Real-time detection device for axial load of bearing and shield machine | |
| CN104209738A (en) | Thrust foundation ring and lower machine frame assembling method | |
| CN112524152B (en) | Bearing play adjusting device and method and wind generating set | |
| CN101546612B (en) | Design transient determination method for sodium-cooled fast reactor nuclear power station coolant system and components | |
| CN108036707A (en) | Vertical hydropower generator Load brackets deflection metrology method | |
| CN103862263B (en) | The accurate press-loading apparatus of normal temperature and the pressing method thereof of a kind of rotor and bent axle | |
| CN210153124U (en) | Water-cooling friction plate for detecting friction plate of yaw brake of wind generating set | |
| CN112284738B (en) | Axial displacement measurement and zero point calibration method for nuclear power steam turbine unit | |
| CN210136063U (en) | On-line detection experiment table for anti-loosening mechanism of underwater connector | |
| CN110752719B (en) | Medium-sized shielding motor stator core pressing processing technology | |
| CN114970008A (en) | Design method of main bearing disc spring group of tunneling machine | |
| CN203779073U (en) | Press-fitting machine tool for mechanical seal stationary seal ring | |
| CN210790759U (en) | Standard measurable push shaft device for main water feed pump of nuclear power station | |
| CN111692122A (en) | Nuclear power plant main pump jacking oil system device | |
| CN205817716U (en) | Water ring vacuum pump vane tool special for dismounting | |
| CN219064404U (en) | Battery package crossbeam deflection examines utensil | |
| CN114682999B (en) | Remanufacturing process for central revolving body of shield tunneling machine | |
| CN218953385U (en) | Sliding pin system for combined cycle steam turbine | |
| CN204041443U (en) | Modified model servocontrol oil supplying device | |
| CN216306038U (en) | Compensation structure for optimizing sealing performance of shaft seal at low pressure cylinder end of steam turbine | |
| CN103872814A (en) | Dovetail rib structure for segmental rotor | |
| CN213743544U (en) | High-strength vertical key of axial steam extraction industrial steam turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |