CN105275790B - Method for adjusting nuclear power station and loop coolant pump - Google Patents
Method for adjusting nuclear power station and loop coolant pump Download PDFInfo
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- CN105275790B CN105275790B CN201510749755.6A CN201510749755A CN105275790B CN 105275790 B CN105275790 B CN 105275790B CN 201510749755 A CN201510749755 A CN 201510749755A CN 105275790 B CN105275790 B CN 105275790B
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Abstract
The invention relates to the technical field of machine adjusting and testing, in particular to a method for adjusting a nuclear power station and loop coolant pump. The method is used for dynamic balance fine adjustment after a motor of the nuclear power station and loop coolant pump is replaced. The vibration vector of a coolant pump and the vibration vector of a new motor are calculated and determined on a non-critical path, so that dynamic balance of a pump-motor system with the replaced new motor is fine adjusted, the situation that dynamic balance tests are carried out again is avoided, the balance adjustment cycle is greatly shortened, economic benefits are effectively improved, and radiation dosage is reduced for staff. Particularly, in actual application, the single-item adjustment process can be at least shortened by over 12 hours, manpower investment of each profession of the dynamic balance tests is reduced by 15 persons, and the outside radiation dosage is reduced by 300 micro sieverts for each of all staff.
Description
Technical field
The present invention relates to machinery adjustment technical field of measurement and test, and in particular to a kind of adjustment of one loop of nuclear power station cooling medium pump
Method.
Background technology
In nuclear power station technical field of power generation, the cardinal principle of nuclear energy power generation is a large amount of heat energy discharged using nuclear fission
Water is heated, is then generated electricity using the Steam Actuation steam turbine generator for being formed, heat energy is changed into into the process of electric energy.
Nuclear fission carries out and produces energy in reactor assembly, and water is heated by above-mentioned energy and using the steaming for producing
Vapour promotes the process generated electricity by steam turbine generator to carry out outside reactor assembly, accordingly, it would be desirable to by the way of certain
The conduction of the energy security that nuclear fission in reactor assembly is produced is out.
Existing nuclear power station generally will produce energy by the way of primary Ioops system is using energy exchange in reactor assembly
Amount conduction to outside, specifically：The reactor core of reactor assembly produces huge heat energy using fuel fission, pumps into heap by main pump
The cooling water of core absorbs after the energy of heap in-core is heated and exports from heap in-core, and the cooling agent after energy absorption flows through steam generation
Heat transfer U-tube in device, transfers thermal energy to the secondary circuit cooling water outside U-tube, again by main pump after release heat by tube wall
Send reactor core back to and re-start energy exchange, being again introduced into steam generator after output carries out energy exchange, and cooling water is so continuous
Ground out, is referred to as primary Ioops system in closed loop interior circulation, the energy conduction for constantly producing reactor core nuclear fission.
Primary Ioops accessory system is mainly used to ensure the normal operation of reactor assembly and primary Ioops system, primary Ioops auxiliary
System is by its function division, the system of guaranteed normal operation and waste treatment system.Wherein, cooled down by coolant pump drive
Agent is circulated cooling to primary Ioops, is the important component part of primary Ioops accessory system, the pump housing of primary Ioops cooling medium pump with
Motor mainly by a shaft coupling connection, has multiple attachment bolts, ran to reduce cooling medium pump on shaft coupling
Higher problem is vibrated in journey, needs to be corrected which using dynamic balance method.
In prior art, mainly by increasing balance mass block on coupling bolt of the motor with pump, shafting is offset
Amount of unbalance, reduce the purpose of vibration, but this method be all to assemble cooling medium pump with motor
After the completion of, then carry out whole dynamic balance correction.After the motor for more renewing, the dynamic equilibrium state of whole system will
Change, in order to the vibration for solving the problems, such as new system is higher, just dynamic balance running must be carried out to new system again, this
The method of kind can not only expend a large amount of manpower and materials, increase personnel's radiation risk, and due to carrying out dynamic balance calibration test
During whole unit be in suspended state, dynamic balance calibration duration of test runs is longer, has a strong impact on the generated energy of unit, no
Beneficial to the raising of economic benefit, it is impossible to meet the demand of technology development.
The content of the invention
Present invention aims to the deficiencies in the prior art provide a kind of adjustment of one loop of nuclear power station cooling medium pump
Method, changes the dynamic balancing fine setting after motor for one loop of nuclear power station cooling agent pump group, can be in non-critical path to cooling agent
Pump carries out calculating determination with the vibration vector of new motor, so as to the dynamic balancing to changing the pump-electric system after new motor is carried out
Fine setting, it is to avoid carry out dynamic balance running to the new system after assembling again, greatly shortens the dynamic balancing adjustment cycle, saves overhaul work
Phase, dynamic balancing adjustment efficiency and economic benefit is effectively improved, reduce personal radiation dose.
The present invention is achieved through the following technical solutions the purpose：
A kind of method of adjustment of one loop of nuclear power station cooling medium pump, comprises the following steps：
1) defining cooling medium pump with the global vibration vector under old motor connection pump state isThe old motor vibration vector of itself
ForThe vibration vector of cooling medium pump itself isThe vibration vector of new motor itself is
2) calculate vibration vectorA datum mark is selected on shaft coupling, using the datum mark as calculating vectorZero
Point, is measured cooling medium pump using vibration measurement analyzer and is joined the global vibration vector under pump state with old motor
3) calculate vibration vectorNo-load test is carried out to old motor, the keyway of old motor is selected as datum mark, with this
Datum mark is used as calculating vectorZero point, measure the old motor vibration vector of itself using vibration measurement analyzer
4) calculate vibration vectorBy the vibration vector for measuringWith vibration vectorSame zero point is converted, using arrow
Amount plus-minus method tries to achieve the vibration vector of cooling medium pump itself
5) calculate vibration vectorNo-load test is carried out to new motor, the keyway of new motor is selected as datum mark, with this
Datum mark is used as calculating vectorZero point, measure the vibration vector of new motor itself using vibration measurement analyzer
6) determine the order of connection of new motor and cooling medium pump：The setting angle of adjustment new motor, as far as possible so that new electricity
The vibration vector of machineWith the vibration vector of cooling medium pumpIt is in opposite direction, cooling medium pump is connected with new motor.
Wherein, the step 2) in, one is selected on shaft coupling, and there is the bolt of substantially mark as datum mark.
Wherein, the step 4) in, first, under cooling medium pump with old motor connection state, select on measurement shaft coupling
Datum mark and old motor keyway between angle, secondly, by the vector for measuringThe angle of measurement is deducted, conversion is tried to achieve and is arrived
Vector after same zero pointFinally, the vibration vector that method tries to achieve cooling medium pump itself is added and subtracted using vector
Wherein, the conversion of same zero point is calculated according to vector plus-minus method.
Wherein, the step 6) in, new motor passes through shaft coupling and bolt connection with cooling medium pump, adjusts the peace of new motor
Dress angle, as far as possible so that the vibration vector of new motorWith the vibration vector of cooling medium pumpBetween angle be 180 °.
Wherein, the step 2) in, the vibration measurement analyzer passes through velocity sensor, eddy current sensor, photoelectric transfer
Sensor and holding wire and cooling medium pump and old motor connection.
Wherein, the quantity of the velocity sensor is four, and one group is individually positioned in old motor drive terminal and non-drive two-by-two
In the same plane of moved end, mutually placement in 90 °, and be connected with vibration measurement analyzer by holding wire respectively.
Further, the step of also including inspection sensor availability after the completion of connection, specifically：Sensing is rocked slowly
Device, observes whether the vibration values for measuring change, if numerical value change illustrates that velocity sensor and connecting line all connect
It is intact, it is possible to use.
Wherein, maintain a certain distance and measured axis between when the eddy current sensor is installed, by holding wire and vibration
Analyzer connects, and is adjusted to measurement gap voltage status, according to the gap voltage adjustment shown on vibration measurement analyzer
The distance between eddy current sensor and measured axis so that gap voltage is stable in -10V or so, fixes currents sensing using bolt
Device.
Wherein, reflecting strips are set in the datum selected, photoelectric sensor are analyzed with vibration measurement using holding wire
Instrument connects, and is adjusted to tachometric survey state, can show tach signal and export on vibration measurement analyzer.
Further, also including checking photoelectric sensor availability the step of, specifically：Using holding wire revolution counter and
Vibration measurement analyzer is connected together, and opens revolution counter, vibration measurement analyzer is adjusted to tachometric survey state then, is shown
Show the rotating speed of equipment, then rocked before the infrared light that revolution counter sends using reflecting strips so as to produce tach signal simultaneously
Output, if showing rotating speed on vibration measurement analyzer, illustrates that photoelectric sensor connection is intact, it is possible to use.
Wherein, the step 3) in reflecting strips be arranged at the keyway of old motor, the step 5) in reflecting strips be arranged at
At the keyway of new motor.
Relative to prior art, beneficial effects of the present invention are：A kind of one loop of nuclear power station cooling medium pump of the present invention
Method of adjustment, changes the dynamic balancing fine setting after motor for one loop of nuclear power station cooling agent pump group, can be in non-critical path to cold
But agent pump carries out calculating determination with the vibration vector of new motor, so as to the dynamic balancing to changing the pump-electric system after new motor
It is finely adjusted, it is to avoid re-start dynamic balance running, greatly shortens the dynamic balancing adjustment cycle, effectively improve economic benefit, reduces
Personal radiation dose, specifically, can reduce more than 12 hours overhaul duration in actual applications, reduce dynamic balance running each specially
15 people of industry human input, reduces about 300 μ SV people of personnel's collection external radiation dosage.
Description of the drawings
Fig. 1 is that cooling medium pump vibration vector solves schematic diagram.
Fig. 2 is that cooling medium pump vibration vector adjusts schematic diagram with new motor vibration vector.
Dynamic balancing method for trimming schematic diagrames of the Fig. 3 for embodiment 3.
Specific embodiment
Describe the present invention below in conjunction with drawings and the specific embodiments.
Embodiment 1.
A kind of method of adjustment of one loop of nuclear power station cooling medium pump of the present embodiment, comprises the following steps：
1) defining cooling medium pump with the global vibration vector under old motor connection pump state isThe old motor vibration vector of itself
ForThe vibration vector of cooling medium pump itself isThe vibration vector of new motor itself isThen method is added and subtracted using vector
Try to achieve the vibration vector of cooling medium pump itself
2) calculate vibration vectorAs shown in figure 1, a datum mark is selected on shaft coupling, using the datum mark as calculating
VectorZero point, measure cooling medium pump and old motor using vibration measurement analyzer and join the global vibration vector under pump state
As preferred, one is selected on shaft coupling there is the bolt of substantially mark as datum mark, be convenient for measurement and vector is changed
Calculate.
3) calculate vibration vectorNo-load test is carried out to old motor, the keyway M of old motor is selected as datum mark, with
The datum mark is used as calculating vectorZero point, measure the old motor vibration vector of itself using vibration measurement analyzer
4) calculate vibration vectorBy the vibration vector for measuringWith vibration vectorSame zero point is converted, using arrow
Amount plus-minus method tries to achieve the vibration vector of cooling medium pump itselfFirst, in cooling medium pump and old motor connection shape
Under state, the angle α between the datum mark and old motor keyway M selected on shaft coupling is measured, secondly, by the vector for measuringDeduct
The angle of measurement, tries to achieve the vector after conversion to same zero pointThe conversion of same zero point is carried out according to vector plus-minus method
Calculate, finally, the vibration vector that method tries to achieve cooling medium pump itself is added and subtracted using vector
5) calculate vibration vectorNo-load test is carried out to new motor, the keyway of new motor is selected as datum mark, with this
Datum mark is used as calculating vectorZero point, measure the vibration vector of new motor itself using vibration measurement analyzer
6) determine the order of connection of new motor and cooling medium pump：As shown in Fig. 2 the setting angle of adjustment new motor, new electricity
Machine passes through shaft coupling and bolt connection with cooling medium pump, adjusts the setting angle of new motor, as far as possible so that the vibration of new motor
VectorWith the vibration vector of cooling medium pumpIt is in opposite direction, i.e., as far as possible cause the vibration vector of new motorWith cooling agent
The vibration vector of pumpBetween angle be 180 °, cooling medium pump is connected with new motor after adjusting.
A kind of method of adjustment of one loop of nuclear power station cooling medium pump of the present invention, for one loop of nuclear power station cooling agent pump group
The dynamic balancing fine setting after motor is changed, cooling medium pump and the vibration vector of new motor can be carried out calculating really in non-critical path
It is fixed, so as to the dynamic balancing to changing the pump-electric system after new motor is finely adjusted, it is to avoid re-start dynamic balance running, greatly
It is big to shorten the dynamic balancing adjustment cycle, economic benefit is effectively improved, personal radiation dose is reduced, specifically, in actual applications may be used
To reduce more than 12 hours overhaul duration, each 15 people of professional human input of dynamic balance running is reduced, reduce personnel's collection external radiation
About 300 μ SV people of dosage.
Embodiment 2.
The present embodiment provides vibration measurement analyzer with cooling medium pump and the connected mode of old motor：The step 2) in,
The vibration measurement analyzer passes through velocity sensor, eddy current sensor, photoelectric sensor and holding wire and cooling medium pump and old
Motor connection.
Wherein, the quantity of the velocity sensor is four, and one group is individually positioned in old motor drive terminal and non-drive two-by-two
In the same plane of moved end, mutually placement in 90 °, and be connected with vibration measurement analyzer by holding wire respectively, after the completion of connection,
Arrange a workman to take down sensor at the scene, slowly rock, observe the vibration values that measure whether great changes have taken place (hand rolling
When changing value can reach hundreds of um), if numerical value change illustrates that velocity sensor and connecting line all connect intact, can make
With.
Wherein, maintain a certain distance and measured axis between when the eddy current sensor is installed, it is preferred in the present embodiment
The distance of 0.5cm is kept during installation between eddy current sensor and measured axis, is connected with vibration measurement analyzer by holding wire, adjusted
It is whole to measurement gap voltage status, according to the gap voltage adjustment eddy current sensor and measured axis that show on vibration measurement analyzer
The distance between, it is preferable that gap voltage is stable in -10V or so, fixes eddy current sensor using bolt.
Preferably so that the stable explanation in -10V or so of gap voltage：Because the present embodiment uses eddy current sensor, most uncommon
The output voltage and the relation being input between mechanical quantity (amplitude) for hoping it is linear, and eddy current sensor is only certain defeated
Cai going out linear characteristic in voltage range, in order to ensure vibration values in this range of linearity, the present embodiment passes displacement as far as possible
Sensor install initial position corresponding to this scope median, this value is exactly -10V, thus to adjust gap voltage to -
10V。
Wherein, reflecting strips are set in the datum selected, photoelectric sensor are analyzed with vibration measurement using holding wire
Instrument connects, and is adjusted to tachometric survey state, can show tach signal and export on vibration measurement analyzer.
For photoelectric sensor (also known as key phase), then to be checked defeated either with or without rotating speed by rocking reflecting strips
The method validation for going out its availability, specifically, connects together revolution counter using holding wire with vibration analyzer, opens rotating speed
Table, is then adjusted to tachometric survey state vibration analyzer, at this moment the rotating speed of meeting display device above.Then it is anti-using one
Striation is rocked before the infrared light that revolution counter sends so as to is produced tach signal and is exported.At this moment, if shown on vibration analyzer
Rotating speed is shown, that just illustrates that photoelectric sensor is available.
Should be noted during availability verification：When we rock reflecting strips and are allowed to produce tach signal,
The distance between reflecting strips and revolution counter for rocking are made not less than the distance between reflecting strips on axle and revolution counter.This is because turning
It is have certain operating distance that fast table produces tach signal, has exceeded this distance, even if infrared light is impinged upon in reflecting strips,
Can not produce tach signal.The position of reflecting strips patch, the as physical zero point of vibration angle, we can choose shaft coupling and take up an official post
The bolt position of meaning label is used as zero point.
After the complete all the sensors of installation and debugging, start primary Ioops cooling medium pump, measure and record shaking after stable operation
Dynamic value, that is, obtain joining the global vibration vector under pump state
Wherein, the step 3) measurement new motor vibration vectorWhen, the reflecting strips are arranged at the keyway of old motor
Place, the step 5) in reflecting strips be arranged at the keyway of new motor.
Embodiment 3.
As shown in figure 3, the present embodiment changes the dynamic balancing method for trimming after motor, figure in providing one loop of nuclear power station overhaul
In outermost circle represent the top of shaft coupling, in figure, labelled great circle represents the connecting bolt on shaft coupling, according to
Following steps are carried out：
1) select bolt B 1 the global vibration vector joined before motor under pump state is changed for measurementZero point, measure connection pump shape
Global vibration vector under stateFor 90 ° of 100um ∠；
2) with the keyway M on old motor as zero point, measure the vibration vector of old motor itselfFor 150 ° of 30um ∠；
3) with the keyway on new motor as zero point, measure the vibration vector of new motor itselfFor 60 ° of 25um ∠；
4) old motor oscillating vector is carried out under same zero datum with the global vibration vector conversion under connection pump state
Plus-minus is calculated, will vibration vector conversion the shaking under with B1 bolts as zero datum that measure as zero point with keyway M of old motor
Dynamic vector, is 15 ° according to the angle α measured in Fig. 3 between bolt B 1 and old motor keyway M, then translation method is to utilize to measure
The vibration angle of old motor oscillating vector deduct 15 °, after conversion, vibration vector of the old motor with bolt B 1 as zero point is 30 ∠
135°；
5) using the data for obtaining have been measured, the vibration vector of cooling medium pump itself is calculated, i.e.,：100∠90°-30∠
135 °=89 73 ° of ∠；
6) determine the order of connection of new motor and cooling medium pump：As shown in figure 3, according to calculated cooling medium pump itself
Vibration vector be 73 ° of 89 ∠ data, it may be determined that the vibration high point position of cooling medium pump itself is between the 8th, No. 9 bolts
Position, according to Vector operation principle, when the angle of two vibration vectors is contrary, after superposition, vibration amplitude can be minimum, only needs
The vibration angle of new motor is adjusted to into the 8th, No. 9 bolt opposites, i.e., between the 3rd, No. 4 bolts, you can amplitude peak is reduced
Level of vibration after connection pump；As it was noted above, the vibration vector of the new motor measured as zero point with the keyway of new motor is as 25um
60 ° of ∠, it is possible thereby to infer that the keyway of new motor is in when the vibration angle of new motor is adjusted between the 3rd, No. 4 bolts
No. 5 position between bolt and B2 bolts, according to the order of connection of new motor and the cooling medium pump for determining, complete new motor with
Cooling medium pump is connected.
During practical application, the overhaul duration 12 can be at least reduced using the cooling medium pump method of adjustment of the present invention
More than hour, each 15 people of professional human input of dynamic balance running is reduced, reduces about 300 μ SV people of personnel's collection external radiation dosage,
Be conducive to greatly shortening the dynamic balancing adjustment cycle, significantly improve economic benefit.
Embodiment described above only expresses some embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (12)
1. a kind of method of adjustment of one loop of nuclear power station cooling medium pump, it is characterised in that comprise the following steps：
1) defining cooling medium pump with the global vibration vector under old motor connection pump state isThe old motor vibration vector of itself is
The vibration vector of cooling medium pump itself isThe vibration vector of new motor itself is
2) calculate vibration vectorA datum mark is selected on shaft coupling, using the datum mark as calculating vibration vectorZero
Point, is measured cooling medium pump using vibration measurement analyzer and is joined the global vibration vector under pump state with old motor
3) calculate vibration vectorNo-load test is carried out to old motor, the keyway of old motor is selected as datum mark, with the benchmark
Point is used as calculating vibration vectorZero point, measure the old motor vibration vector of itself using vibration measurement analyzer
4) calculate vibration vectorBy the vibration vector for measuringWith vibration vectorSame zero point is converted, is added and subtracted using vector
Method tries to achieve the vibration vector of cooling medium pump itself
5) calculate vibration vectorNo-load test is carried out to new motor, the keyway of new motor is selected as datum mark, with the benchmark
Point is used as calculating vibration vectorZero point, measure the vibration vector of new motor itself using vibration measurement analyzer
6) determine the order of connection of new motor and cooling medium pump：The setting angle of adjustment new motor, as far as possible so that new motor
Vibration vectorWith the vibration vector of cooling medium pumpIt is in opposite direction, cooling medium pump is connected with new motor.
2. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 1, it is characterised in that the step 2)
In, one is selected on shaft coupling, and there is the bolt of substantially mark as datum mark.
3. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 1, it is characterised in that the step 4)
In, first, under cooling medium pump with old motor connection state, measure between the datum mark and old motor keyway selected on shaft coupling
Angle, secondly, by the vibration vector for measuringThe angle of measurement is deducted, the vibration vector after conversion to same zero point is tried to achieveFinally, the vibration vector that method tries to achieve cooling medium pump itself is added and subtracted using vector
4. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 3, it is characterised in that same zero point
Conversion is calculated according to vector plus-minus method.
5. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 1, it is characterised in that the step 6)
In, new motor and cooling medium pump pass through shaft coupling and bolt connection, adjust the setting angle of new motor, as far as possible so that new motor
Vibration vectorWith the vibration vector of cooling medium pumpBetween angle be 180 °.
6. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 1, it is characterised in that the step 2)
In, the vibration measurement analyzer pass through velocity sensor, eddy current sensor, photoelectric sensor and holding wire and cooling medium pump and
Old motor connection.
7. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 6, it is characterised in that the speed is passed
The quantity of sensor is four, and one group is individually positioned in the same plane of old motor drive terminal and anti-drive end two-by-two, mutually in 90 °
Place, and be connected with vibration measurement analyzer by holding wire respectively.
8. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 7, it is characterised in that after the completion of connection
The step of also including inspection velocity sensor availability, specifically：Velocity sensor is slowly rocked, the vibration values for measuring are observed
Whether change, if numerical value change illustrates that velocity sensor and connecting line all connect intact, it is possible to use.
9. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 6, it is characterised in that the vortex is passed
Maintain a certain distance and measured axis between when sensor is installed, be connected with vibration measurement analyzer by holding wire, be adjusted to survey
Amount gap voltage state, according between the gap voltage adjustment eddy current sensor and measured axis shown on vibration measurement analyzer
Distance so that gap voltage is stable in -10V or so, fixes eddy current sensor using bolt.
10. the method for adjustment of one loop of nuclear power station cooling medium pump according to claim 6, it is characterised in that what is selected
Datum arranges reflecting strips, is connected photoelectric sensor with vibration measurement analyzer using holding wire, is adjusted to tachometric survey
State, can show tach signal and export on vibration measurement analyzer.
The method of adjustment of 11. one loop of nuclear power station cooling medium pumps according to claim 10, it is characterised in that also including testing
The step of card photoelectric sensor availability, specifically：Revolution counter is connected together with vibration measurement analyzer using holding wire,
Revolution counter is opened, vibration measurement analyzer is adjusted to tachometric survey state then, the rotating speed of display device, then using one
Reflecting strips are rocked before the infrared light that revolution counter sends so as to produced tach signal and exported, if on vibration measurement analyzer
Rotating speed is shown, then illustrates that photoelectric sensor connection is intact, it is possible to use.
The method of adjustment of 12. one loop of nuclear power station cooling medium pumps according to claim 10, it is characterised in that the step
3) in, reflecting strips are arranged at the keyway of old motor, the step 5) in reflecting strips be arranged at the keyway of new motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510749755.6A CN105275790B (en) | 2015-11-06 | 2015-11-06 | Method for adjusting nuclear power station and loop coolant pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510749755.6A CN105275790B (en) | 2015-11-06 | 2015-11-06 | Method for adjusting nuclear power station and loop coolant pump |
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| CN105275790A CN105275790A (en) | 2016-01-27 |
| CN105275790B true CN105275790B (en) | 2017-03-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5459595B2 (en) * | 2009-09-28 | 2014-04-02 | 株式会社Ｉｈｉ | Unbalance measurement method |
| CN103306967B (en) * | 2013-07-08 | 2015-09-16 | 哈尔滨电气动力装备有限公司 | 300MW reactor coolant pump measuring system |
| CN104198119B (en) * | 2014-08-22 | 2017-04-12 | 中广核核电运营有限公司 | Nuclear power station main pump dynamic balance test method |
| CN104481930B (en) * | 2014-11-25 | 2016-08-17 | 西安热工研究院有限公司 | A kind of spot dynamic balance method of vertical water pump |
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