CN110660197B - Real-time alarm method and system for working condition of water turbine top cover bolt - Google Patents
Real-time alarm method and system for working condition of water turbine top cover bolt Download PDFInfo
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- CN110660197B CN110660197B CN201910870223.6A CN201910870223A CN110660197B CN 110660197 B CN110660197 B CN 110660197B CN 201910870223 A CN201910870223 A CN 201910870223A CN 110660197 B CN110660197 B CN 110660197B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B31/00—Predictive alarm systems characterised by extrapolation or other computation using updated historic data
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Abstract
The invention discloses a real-time alarm method for working conditions of a water turbine top cover bolt, which comprises the steps of collecting bolt parameters, initial pretightening force, a historical healthy stress range of the bolt under a starting working condition and a historical healthy stress range of the bolt under a stopping working condition; calculating a plurality of alarm thresholds under the starting working condition according to the bolt parameters and the historical healthy stress range of the bolt under the starting working condition; calculating a plurality of alarm thresholds under the shutdown working condition according to the bolt parameters, the initial pretightening force and the historical healthy stress range of the bolt under the shutdown working condition; collecting real-time working conditions and real-time stress of a bolt; and judging the alarm threshold value interval of the bolt under the corresponding working condition of the real-time stress, and sending preset alarm information corresponding to the alarm threshold value interval. A corresponding system is also disclosed. According to the invention, different alarm thresholds are calculated according to different working conditions, and corresponding preset alarm information is sent according to the alarm threshold interval where the real-time stress is located, so that real-time alarm of the working condition of the bolt is realized, and the operation safety of the water turbine top cover and the unit is ensured.
Description
Technical Field
The invention relates to a real-time alarm method and system for working conditions of a water turbine top cover bolt, and belongs to the field of equipment state monitoring and fault diagnosis.
Background
In the hydropower industry, a top cover of a hydraulic turbine of a hydroelectric generating set is connected through bolts, and if a stud cannot be screwed down according to designed pretightening force, the stud is gradually loosened, so that fatigue cracks and fatigue fracture are generated on the stud, and the safety and stability of the hydroelectric generating set are influenced; therefore, a method for alarming the working condition of the top cover bolt of the water turbine is needed in a hydroelectric system.
Disclosure of Invention
The invention provides a real-time alarm method and a real-time alarm system for working conditions of a water turbine top cover bolt, which solve the problems disclosed in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the real-time alarm method for the working condition of the top cover bolt of the water turbine comprises the following steps,
acquiring bolt parameters, initial pretightening force, and a historical healthy stress range of the bolt under a starting working condition and a historical healthy stress range of the bolt under a stopping working condition;
calculating a plurality of alarm thresholds under the starting working condition according to the bolt parameters and the historical healthy stress range of the bolt under the starting working condition;
calculating a plurality of alarm thresholds under the shutdown working condition according to the bolt parameters, the initial pretightening force and the historical healthy stress range of the bolt under the shutdown working condition;
collecting real-time working conditions and real-time stress of a bolt;
and judging the alarm threshold value interval of the bolt under the corresponding working condition of the real-time stress, and sending preset alarm information corresponding to the alarm threshold value interval.
The upper limit and the lower limit of the historical healthy stress range of the bolt under the starting working condition are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the starting working condition; the upper limit and the lower limit of the historical healthy stress range of the bolt under the shutdown working condition are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the shutdown working condition.
Bolt parameters include bolt minimum diameter and yield strength.
The alarm threshold value under the starting-up working condition has the calculation formula,
T11＝σs×a
T12＝V1×b
T13＝V2×c
wherein T11, T12 and T13 are three alarm thresholds under the starting working condition, a, b and c are parameters, σ s is the yield strength of the bolt, V1 is the lower limit of the historical healthy stress range of the bolt under the starting working condition, and V2 is the upper limit of the historical healthy stress range of the bolt under the starting working condition;
the alarm threshold value under the shutdown condition has the calculation formula,
T01＝σs×a
T02＝V3×d
T03＝V4×e
T04＝F/A×f
t01, T02, T03 and T04 are three alarm thresholds under the shutdown working condition, d, e and F are parameters, F is initial pretightening force, A is the minimum diameter of the bolt, V3 is the lower limit of the historical healthy stress range of the bolt under the shutdown working condition, and V4 is the upper limit of the historical healthy stress range of the bolt under the shutdown working condition.
The real-time alarm system for the working condition of the top cover bolt of the water turbine comprises,
a history acquisition module: acquiring bolt parameters, initial pretightening force, and a historical healthy stress range of the bolt under a starting working condition and a historical healthy stress range of the bolt under a stopping working condition;
a starting working condition threshold value calculation module: calculating a plurality of alarm thresholds under the starting working condition according to the bolt parameters and the historical healthy stress range of the bolt under the starting working condition;
shutdown condition threshold calculation module: calculating a plurality of alarm thresholds under the shutdown working condition according to the bolt parameters, the initial pretightening force and the historical healthy stress range of the bolt under the shutdown working condition;
a real-time acquisition module: collecting real-time working conditions and real-time stress of a bolt;
a judging module: and judging the alarm threshold value interval of the bolt under the corresponding working condition of the real-time stress, and sending preset alarm information corresponding to the alarm threshold value interval.
The upper limit and the lower limit of the historical healthy stress range of the bolt under the starting working condition, which are acquired by the historical acquisition module, are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the starting working condition; the upper limit and the lower limit of the bolt historical healthy stress range under the shutdown working condition, which are acquired by the historical acquisition module, are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the shutdown working condition.
The bolt parameters collected by the history collection module comprise the minimum diameter and the yield strength of the bolt.
The calculation formula of the starting-up working condition threshold value calculation module is as follows,
T11＝σs×a
T12＝V1×b
T13＝V2×c
wherein T11, T12 and T13 are three alarm thresholds under the starting working condition, a, b and c are parameters, σ s is the yield strength of the bolt, V1 is the lower limit of the historical healthy stress range of the bolt under the starting working condition, and V2 is the upper limit of the historical healthy stress range of the bolt under the starting working condition;
the calculation formula of the shutdown condition threshold calculation module is as follows,
T01＝σs×a
T02＝V3×d
T03＝V4×e
T04＝F/A×f
t01, T02, T03 and T04 are three alarm thresholds under the shutdown working condition, d, e and F are parameters, F is initial pretightening force, A is the minimum diameter of the bolt, V3 is the lower limit of the historical healthy stress range of the bolt under the shutdown working condition, and V4 is the upper limit of the historical healthy stress range of the bolt under the shutdown working condition.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a real-time warning method of turbine head cap bolt operation.
A computing device comprising one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing a real-time warning method of turbine head cap bolt operation
The invention achieves the following beneficial effects: according to the method, different alarm threshold values are calculated according to different working conditions, and corresponding preset alarm information is sent according to the alarm threshold value interval where the real-time stress is located, so that real-time alarm of the working conditions of the bolt is realized, and the operation safety of the water turbine top cover and the unit is guaranteed; meanwhile, the invention avoids the influence of different water heads and output forces when the unit operates, does not need complex calculation and is simple to use.
Drawings
FIG. 1 is a flow chart of the invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in FIG. 1, the real-time alarm method for the working condition of the water turbine top cover bolt comprises the following steps:
step 1, acquiring bolt parameters, initial pretightening force, and historical healthy stress range of the bolt under a starting working condition and historical healthy stress range of the bolt under a stopping working condition.
The bolt parameters and the initial pre-tightening force can be obtained by consulting equipment data, wherein the bolt parameters comprise the minimum diameter and the yield strength of the bolt.
Collecting historical health stress data of bolt monitoring, specifically historical data of a bolt which runs stably within about three months after initial installation or overhaul installation, wherein the upper limit and the lower limit of the historical health stress range of the bolt under the starting working condition are respectively a maximum value V2 and a minimum value V1 of 97% confidence coefficient of the historical health data under the starting working condition; the upper limit and the lower limit of the historical healthy stress range of the bolt under the shutdown condition are respectively the maximum value V4 and the minimum value V3 of 97% confidence coefficient of the historical healthy data under the shutdown condition.
And 2, calculating a plurality of alarm thresholds under the starting working condition according to the bolt parameters and the historical healthy stress range of the bolt under the starting working condition.
The specific formula is as follows:
T11＝σs×a
T12＝V1×b
T13＝V2×c
t11, T12 and T13 are three alarm thresholds under the starting working condition, T11 is larger than T12 and smaller than T13, a, b and c are parameters, the value range of a is 0.5-0.8, the value range of b is 1.1-1.3, the value range of c is 0.6-0.9, and σ s is the yield strength of the bolt.
And 3, calculating a plurality of alarm thresholds under the shutdown working condition according to the bolt parameters, the initial pretightening force and the historical healthy stress range of the bolt under the shutdown working condition.
The specific formula is as follows:
T01＝σs×a
T02＝V3×d
T03＝V4×e
T04＝F/A×f
t01, T02, T03 and T04 are three alarm thresholds under a shutdown working condition, T01 is more than T02 and more than T03 is more than T04, T04 is the bolt pretightening force attenuation lower limit, namely the bolt pretightening force loss part, d, e and F are parameters, the value range of e is 0.6-0.9, the value range of d is 0.5-0.8, the value range of F is 0.7-0.8, F is the initial pretightening force, and A is the minimum diameter of the bolt.
And 4, acquiring real-time working conditions and real-time stress of the bolt.
And 5, judging an alarm threshold value interval under the corresponding working condition of the real-time stress of the bolt, and sending preset alarm information corresponding to the alarm threshold value interval.
Under the working condition of starting, when the real-time stress of the bolt is in a range of [ T12T 13], the bolt is a safe area, and no alarm is sent out; when the real-time stress of the bolt is in a value of [ T11T 12], the bolt is in a yellow alarm area, a yellow alarm is sent out, and the surface needs to be processed; when the real-time stress of the bolt exceeds [ T11T 13], the bolt is a red alarm area, a red alarm is sent, and the surface needs to be treated emergently.
Under the shutdown working condition, when the real-time stress of the bolt is in a range of [ T02T 03], the bolt is a safe area, and no alarm is sent out; when the real-time stress of the bolt is in the range of [ T01T 02] or [ T03T 04], the bolt is a yellow alarm area, a yellow alarm is sent out, and the surface needs to be processed; when the real-time stress of the bolt exceeds [ T01T 04], the bolt is a red alarm area, a red alarm is sent, and the surface needs to be treated emergently.
According to the method, different alarm thresholds are calculated according to different working conditions, and corresponding preset alarm information is sent according to the alarm threshold interval where the real-time stress is located, so that real-time alarm of the working conditions of the bolt is realized, and the operation safety of the water turbine top cover and the unit is guaranteed; meanwhile, the method avoids the influence of different water heads and output forces when the unit operates, does not need complex calculation, and is simple to use.
The real-time alarm system for the working condition of the top cover bolt of the water turbine comprises,
a history acquisition module: and acquiring bolt parameters, initial pretightening force, and historical healthy stress range of the bolt under the starting working condition and historical healthy stress range of the bolt under the stopping working condition.
A starting working condition threshold value calculation module: and calculating a plurality of alarm thresholds under the starting working condition according to the bolt parameters and the historical healthy stress range of the bolt under the starting working condition.
Shutdown condition threshold calculation module: and calculating a plurality of alarm thresholds under the shutdown working condition according to the bolt parameters, the initial pretightening force and the historical healthy stress range of the bolt under the shutdown working condition.
A real-time acquisition module: and collecting real-time working conditions and real-time stress of the bolt.
A judging module: and judging the alarm threshold value interval of the bolt under the corresponding working condition of the real-time stress, and sending preset alarm information corresponding to the alarm threshold value interval.
The upper limit and the lower limit of the historical healthy stress range of the bolt under the starting working condition, which are acquired by the historical acquisition module, are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the starting working condition; the upper limit and the lower limit of the bolt historical healthy stress range under the shutdown working condition, which are acquired by the historical acquisition module, are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the shutdown working condition.
The bolt parameters collected by the history collection module comprise the minimum diameter and the yield strength of the bolt.
The calculation formula of the starting-up working condition threshold value calculation module is as follows,
T11＝σs×a
T12＝V1×b
T13＝V2×c
wherein T11, T12 and T13 are three alarm thresholds under the starting working condition, a, b and c are parameters, σ s is the yield strength of the bolt, V1 is the lower limit of the historical healthy stress range of the bolt under the starting working condition, and V2 is the upper limit of the historical healthy stress range of the bolt under the starting working condition;
the calculation formula of the shutdown condition threshold calculation module is as follows,
T01＝σs×a
T02＝V3×d
T03＝V4×e
T04＝F/A×f
t01, T02, T03 and T04 are three alarm thresholds under the shutdown working condition, d, e and F are parameters, F is initial pretightening force, and A is the minimum diameter of the bolt.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a real-time warning method of water turbine head bolt operation.
A computing device comprising one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing a real-time warning method of turbine head cap bolt operation.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (8)
1. The real-time alarm method for the working condition of the top cover bolt of the water turbine is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
acquiring bolt parameters, initial pretightening force, and a historical healthy stress range of the bolt under a starting working condition and a historical healthy stress range of the bolt under a stopping working condition;
calculating a plurality of alarm thresholds under the starting working condition according to the bolt parameters and the historical healthy stress range of the bolt under the starting working condition;
the alarm threshold value under the starting-up working condition has the calculation formula,
T11＝σs×a
T12＝V1×b
T13＝V2×c
wherein T11, T12 and T13 are three alarm thresholds under the starting working condition, a, b and c are parameters, σ s is the yield strength of the bolt, V1 is the lower limit of the historical healthy stress range of the bolt under the starting working condition, and V2 is the upper limit of the historical healthy stress range of the bolt under the starting working condition;
calculating a plurality of alarm thresholds under the shutdown working condition according to the bolt parameters, the initial pretightening force and the historical healthy stress range of the bolt under the shutdown working condition;
the alarm threshold value under the shutdown condition has the calculation formula,
T01＝σs×a
T02＝V3×d
T03＝V4×e
T04＝F/A×f
t01, T02, T03 and T04 are three alarm thresholds under the shutdown working condition, d, e and F are parameters, F is initial pretightening force, A is the minimum diameter of the bolt, V3 is the lower limit of the historical healthy stress range of the bolt under the shutdown working condition, and V4 is the upper limit of the historical healthy stress range of the bolt under the shutdown working condition;
collecting real-time working conditions and real-time stress of a bolt;
and judging the alarm threshold value interval of the bolt under the corresponding working condition of the real-time stress, and sending preset alarm information corresponding to the alarm threshold value interval.
2. The real-time alarm method for the working condition of the roof bolt of the water turbine according to claim 1, characterized in that: the upper limit and the lower limit of the historical healthy stress range of the bolt under the starting working condition are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the starting working condition; the upper limit and the lower limit of the historical healthy stress range of the bolt under the shutdown working condition are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the shutdown working condition.
3. The real-time alarm method for the working condition of the roof bolt of the water turbine according to claim 1, characterized in that: bolt parameters include bolt minimum diameter and yield strength.
4. Real-time alarm system of hydraulic turbine top cap bolt operating mode, its characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a history acquisition module: acquiring bolt parameters, initial pretightening force, and a historical healthy stress range of the bolt under a starting working condition and a historical healthy stress range of the bolt under a stopping working condition;
a starting working condition threshold value calculation module: calculating a plurality of alarm thresholds under the starting working condition according to the bolt parameters and the historical healthy stress range of the bolt under the starting working condition;
the calculation formula of the starting-up working condition threshold value calculation module is as follows,
T11＝σs×a
T12＝V1×b
T13＝V2×c
wherein T11, T12 and T13 are three alarm thresholds under the starting working condition, a, b and c are parameters, σ s is the yield strength of the bolt, V1 is the lower limit of the historical healthy stress range of the bolt under the starting working condition, and V2 is the upper limit of the historical healthy stress range of the bolt under the starting working condition;
shutdown condition threshold calculation module: calculating a plurality of alarm thresholds under the shutdown working condition according to the bolt parameters, the initial pretightening force and the historical healthy stress range of the bolt under the shutdown working condition;
the calculation formula of the shutdown condition threshold calculation module is as follows,
T01＝σs×a
T02＝V3×d
T03＝V4×e
T04＝F/A×f
t01, T02, T03 and T04 are three alarm thresholds under the shutdown working condition, d, e and F are parameters, F is initial pretightening force, A is the minimum diameter of the bolt, V3 is the lower limit of the historical healthy stress range of the bolt under the shutdown working condition, and V4 is the upper limit of the historical healthy stress range of the bolt under the shutdown working condition;
a real-time acquisition module: collecting real-time working conditions and real-time stress of a bolt;
a judging module: and judging the alarm threshold value interval of the bolt under the corresponding working condition of the real-time stress, and sending preset alarm information corresponding to the alarm threshold value interval.
5. The real-time alarm system for the working condition of the roof bolts of the water turbine as claimed in claim 4, wherein: the upper limit and the lower limit of the historical healthy stress range of the bolt under the starting working condition, which are acquired by the historical acquisition module, are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the starting working condition; the upper limit and the lower limit of the bolt historical healthy stress range under the shutdown working condition, which are acquired by the historical acquisition module, are respectively the maximum value and the minimum value of the M% confidence coefficient of the historical healthy data under the shutdown working condition.
6. The real-time alarm system for the working condition of the roof bolts of the water turbine as claimed in claim 4, wherein: the bolt parameters collected by the history collection module comprise the minimum diameter and the yield strength of the bolt.
7. A computer readable storage medium storing one or more programs, characterized in that: the one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any of the methods of claims 1-3.
8. A computing device, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 1-3.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202836837U (en) * | 2012-09-28 | 2013-03-27 | 天津远捷海洋工程有限公司 | Monitoring device for underwater bolt fastening state |
| CN203515972U (en) * | 2013-09-24 | 2014-04-02 | 南车株洲电力机车研究所有限公司 | Clamping force monitoring system for bolt connection of wind generating set |
| CN105628421A (en) * | 2015-12-25 | 2016-06-01 | 南京南瑞集团公司 | Hydroelectric generating set vibration limit monitoring and early warning method according to working conditions |
| CN106679859A (en) * | 2016-12-30 | 2017-05-17 | 北京金风科创风电设备有限公司 | bolt stress monitoring system and monitoring method |
| US9746017B2 (en) * | 2015-09-22 | 2017-08-29 | Kabushiki Kaisha Toshiba | Fastener including a wireless module and a wireless device attachable to the same |
| CN107192482A (en) * | 2017-06-21 | 2017-09-22 | 国家电网公司 | Pump-storage generator closure stud load-bearing monitor device and method |
| CN107328670A (en) * | 2017-07-25 | 2017-11-07 | 河海大学 | Water-turbine top cover bolt fluid pressure type fatigue experiment analogue means and analogy method |
| CN107356388A (en) * | 2017-07-25 | 2017-11-17 | 河海大学 | Water-turbine top cover bolt mechanical-vibration type fatigue experiment analogue means and analogy method |
| CN207036310U (en) * | 2017-06-21 | 2018-02-23 | 国家电网公司 | Pump-storage generator closure stud load-bearing monitor device |
| CN109406036A (en) * | 2018-12-04 | 2019-03-01 | 长沙飚能信息科技有限公司 | Monitor the system and method for wind-driven generator bolt fastening stress on-line |
| CN109738104A (en) * | 2019-03-12 | 2019-05-10 | 上海安乃基能源科技有限公司 | Water-turbine top cover bolt monitoring device and method |
| CN109815533A (en) * | 2018-12-14 | 2019-05-28 | 南京河海南自水电自动化有限公司 | It is a kind of difference operating condition under hydroelectric machine group parts Operational Data Analysis method and system |
| CN109974920A (en) * | 2019-04-12 | 2019-07-05 | 哈尔滨电机厂有限责任公司 | A kind of bolt fastener stress dynamic monitoring method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106485064B (en) * | 2016-09-28 | 2017-09-12 | 华中科技大学 | A kind of intelligent starting-up method of pump-storage generator hydraulic turbine condition |
-
2019
- 2019-09-16 CN CN201910870223.6A patent/CN110660197B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202836837U (en) * | 2012-09-28 | 2013-03-27 | 天津远捷海洋工程有限公司 | Monitoring device for underwater bolt fastening state |
| CN203515972U (en) * | 2013-09-24 | 2014-04-02 | 南车株洲电力机车研究所有限公司 | Clamping force monitoring system for bolt connection of wind generating set |
| US9746017B2 (en) * | 2015-09-22 | 2017-08-29 | Kabushiki Kaisha Toshiba | Fastener including a wireless module and a wireless device attachable to the same |
| CN105628421A (en) * | 2015-12-25 | 2016-06-01 | 南京南瑞集团公司 | Hydroelectric generating set vibration limit monitoring and early warning method according to working conditions |
| CN106679859A (en) * | 2016-12-30 | 2017-05-17 | 北京金风科创风电设备有限公司 | bolt stress monitoring system and monitoring method |
| CN207036310U (en) * | 2017-06-21 | 2018-02-23 | 国家电网公司 | Pump-storage generator closure stud load-bearing monitor device |
| CN107192482A (en) * | 2017-06-21 | 2017-09-22 | 国家电网公司 | Pump-storage generator closure stud load-bearing monitor device and method |
| CN107328670A (en) * | 2017-07-25 | 2017-11-07 | 河海大学 | Water-turbine top cover bolt fluid pressure type fatigue experiment analogue means and analogy method |
| CN107356388A (en) * | 2017-07-25 | 2017-11-17 | 河海大学 | Water-turbine top cover bolt mechanical-vibration type fatigue experiment analogue means and analogy method |
| CN109406036A (en) * | 2018-12-04 | 2019-03-01 | 长沙飚能信息科技有限公司 | Monitor the system and method for wind-driven generator bolt fastening stress on-line |
| CN109815533A (en) * | 2018-12-14 | 2019-05-28 | 南京河海南自水电自动化有限公司 | It is a kind of difference operating condition under hydroelectric machine group parts Operational Data Analysis method and system |
| CN109738104A (en) * | 2019-03-12 | 2019-05-10 | 上海安乃基能源科技有限公司 | Water-turbine top cover bolt monitoring device and method |
| CN109974920A (en) * | 2019-04-12 | 2019-07-05 | 哈尔滨电机厂有限责任公司 | A kind of bolt fastener stress dynamic monitoring method |
Non-Patent Citations (2)
| Title |
|---|
| 水轮机顶盖部分螺栓断裂后剩余螺栓的强度分析;葛新峰;《排灌机械工程学报》;20190731;第600-605页 * |
| 浅谈对大型抽水蓄能机组顶盖螺栓预紧力的认识;何少润;《抽水蓄能电站工程建设文集2019》;20180220;第11-14页 * |
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