CN114483221A - Shafting vibration online safety monitoring method for nuclear turbine rotor and bearing system - Google Patents
Shafting vibration online safety monitoring method for nuclear turbine rotor and bearing system Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
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Abstract
The application provides an online safety monitoring method for shafting vibration of a nuclear turbine rotor and bearing system, and relates to the technical field of nuclear turbines. The method comprises the following steps: acquiring a shaft neck online monitoring shaft vibration relative displacement peak value and a bearing seat online monitoring vibration speed of a rotor and a bearing system of a nuclear turbine bearing the actions of forced vibration and self-excited vibration as shaft system vibration online monitoring data of the rotor and the bearing system; determining online reliability monitoring data of shafting vibration according to the online monitoring data of the shafting vibration; and performing optimized operation and maintenance control on the nuclear turbine according to the online reliability monitoring data of the shafting vibration. The embodiment of the application can accurately monitor the safety of the shafting vibration of the rotor and the bearing system of the nuclear turbine and perform optimized operation and maintenance control on the nuclear turbine, thereby prolonging the service life and the operation reliability of the nuclear turbine and ensuring the long-period safe operation of the nuclear turbine.
Description
Technical Field
The application relates to the technical field of nuclear turbines, in particular to a shafting vibration online safety monitoring method for a nuclear turbine rotor and bearing system.
Background
When the bearing force of key parts of the nuclear turbine is affected by forced vibration and self-excited vibration, parts are easily damaged, so that the safety, the service life and the operation reliability of the nuclear turbine are affected, and in order to prolong the service life of the nuclear turbine and ensure the long-period safe operation of the nuclear turbine, the shafting vibration of a rotor and a bearing system of the nuclear turbine needs to be monitored safely on line.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, one object of the present application is to provide an online safety monitoring method for shafting vibration of a rotor and bearing system of a nuclear turbine.
The second purpose of the application is to provide a shafting vibration online safety monitoring device for a nuclear turbine rotor and bearing system.
A third object of the present application is to provide an electronic device.
A fourth object of the present application is to propose a non-transitory computer readable storage medium.
A fifth object of the present application is to propose a computer program product.
In order to achieve the above object, an embodiment of the first aspect of the present application provides an online safety monitoring method for shafting vibration of a rotor and bearing system of a nuclear turbine, including:
acquiring a shaft neck online monitoring shaft vibration relative displacement peak value and a bearing seat online monitoring vibration speed of a rotor and a bearing system of a nuclear turbine bearing the actions of forced vibration and self-excited vibration, and taking the shaft neck online monitoring shaft vibration relative displacement peak value and the bearing seat online monitoring vibration speed as shafting vibration online monitoring data of the rotor and the bearing system;
determining online reliability monitoring data of shafting vibration according to the shafting vibration online monitoring data;
and performing optimized operation and maintenance control on the nuclear turbine according to the online reliability monitoring data of the shafting vibration.
In one possible implementation manner, determining online reliability monitoring data of shafting vibration according to the online monitoring data of shafting vibration includes:
determining the ratio of the shaft vibration relative displacement of the rotor journal on-line monitoring according to the peak value of the shaft vibration relative displacement peak of the rotor journal on-line monitoring;
acquiring an alarm value of the online monitoring vibration speed of the bearing seat;
determining the ratio of the online monitoring vibration speed according to the alarm value and the online monitoring vibration speed of the bearing seat;
and determining the ratio of the relative displacement of the shaft vibration and the ratio of the online monitoring vibration speed as online reliability monitoring data of the shaft system vibration.
In one possible implementation, the method for performing optimized operation and maintenance control on a nuclear turbine according to online reliability monitoring data of shafting vibration includes:
according to the ratio of the shaft vibration relative displacement, carrying out optimized operation and maintenance control on the rotor journal by monitoring the shaft vibration relative displacement on line;
and carrying out optimized operation and maintenance control on the online monitoring vibration speed of the bearing seat according to the ratio of the online monitoring vibration speed.
In a possible implementation manner, the method for performing optimized operation and maintenance control on the rotor journal by monitoring the shaft vibration relative displacement on line according to the ratio of the shaft vibration relative displacement comprises the following steps:
determining that the operation monitoring of the shaft vibration relative displacement of the rotor journal on-line monitoring is qualified in response to the fact that the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value;
in response to the fact that the ratio of the shaft vibration relative displacement is larger than or equal to a preset shaft vibration relative displacement ratio threshold value, determining that the operation monitoring of the rotor journal on-line monitoring of the shaft vibration relative displacement is not qualified, and generating an optimization improvement strategy of the shaft vibration relative displacement;
and performing optimized operation and maintenance control on the nuclear turbine according to an optimized and improved strategy of the shaft vibration relative displacement until the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value, and finishing the optimization.
In a possible implementation manner, the optimized operation and maintenance control of the online monitoring vibration speed of the bearing seat is performed according to the ratio of the online monitoring vibration speed, and includes:
determining that the operation monitoring of the online monitoring vibration speed of the bearing seat is qualified in response to the fact that the ratio of the online monitoring vibration speed is smaller than a preset vibration speed ratio threshold;
responding to the fact that the ratio of the online monitoring vibration speed is larger than or equal to a preset vibration speed ratio threshold value, determining that the online monitoring vibration speed operation monitoring of the bearing seat is not qualified, and generating an optimization improvement strategy of the online monitoring vibration speed of the bearing seat;
and carrying out optimized operation and maintenance control on the nuclear turbine according to an optimized and improved strategy of the on-line monitoring vibration speed of the bearing seat until the ratio of the on-line monitoring vibration speed is smaller than a preset vibration speed ratio threshold value, and finishing the optimization.
The embodiment of the application can accurately monitor the safety of the shafting vibration of the rotor and the bearing system of the nuclear turbine and perform optimized operation and maintenance control on the nuclear turbine, thereby prolonging the service life and the operation reliability of the nuclear turbine and ensuring the long-period safe operation of the nuclear turbine.
In order to achieve the above object, an embodiment of a second aspect of the present application provides an on-line safety monitoring device for shaft system vibration of a rotor and bearing system of a nuclear turbine, including:
the acquisition module is used for acquiring the online monitoring shaft vibration relative displacement peak value of a rotor journal and the online monitoring vibration speed of a bearing seat of a rotor and bearing system of the nuclear turbine under the action of forced vibration and self-excited vibration as the online monitoring data of the shafting vibration of the rotor and bearing system;
the determining module is used for determining online reliability monitoring data of shafting vibration according to the shafting vibration online monitoring data;
and the optimization module is used for carrying out optimized operation and maintenance control on the nuclear turbine according to the online reliability monitoring data of the shafting vibration.
In one possible implementation, the determining module is further configured to:
determining the ratio of the shaft vibration relative displacement of the rotor journal on-line monitoring according to the peak value of the shaft vibration relative displacement peak of the rotor journal on-line monitoring;
acquiring an alarm value of the online monitoring vibration speed of the bearing seat;
determining the ratio of the online monitoring vibration speed according to the alarm value and the online monitoring vibration speed of the bearing seat;
and determining the ratio of the relative displacement of the shaft vibration and the ratio of the online monitoring vibration speed as online reliability monitoring data of the shaft system vibration.
In one possible implementation, the optimization module is further configured to:
according to the ratio of the shaft vibration relative displacement, carrying out optimized operation and maintenance control on the rotor journal by monitoring the shaft vibration relative displacement on line;
and carrying out optimized operation and maintenance control on the online monitoring vibration speed of the bearing seat according to the ratio of the online monitoring vibration speed.
In one possible implementation, the optimization module is further configured to:
determining that the operation monitoring of the shaft vibration relative displacement of the rotor journal on-line monitoring is qualified in response to the fact that the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value;
in response to the fact that the ratio of the shaft vibration relative displacement is larger than or equal to a preset shaft vibration relative displacement ratio threshold value, determining that the operation monitoring of the rotor journal on-line monitoring of the shaft vibration relative displacement is not qualified, and generating an optimization improvement strategy of the shaft vibration relative displacement;
and performing optimized operation and maintenance control on the nuclear turbine according to an optimized and improved strategy of the shaft vibration relative displacement until the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value, and finishing the optimization.
In one possible implementation, the optimization module is further configured to:
determining that the operation monitoring of the online monitoring vibration speed of the bearing seat is qualified in response to the fact that the ratio of the online monitoring vibration speed is smaller than a preset vibration speed ratio threshold;
responding to the fact that the ratio of the online monitoring vibration speed is larger than or equal to a preset vibration speed ratio threshold value, determining that the online monitoring vibration speed operation monitoring of the bearing seat is not qualified, and generating an optimization improvement strategy of the online monitoring vibration speed of the bearing seat;
and carrying out optimized operation and maintenance control on the nuclear turbine according to an optimized and improved strategy of the on-line monitoring vibration speed of the bearing seat until the ratio of the on-line monitoring vibration speed is smaller than a preset vibration speed ratio threshold value, and finishing the optimization.
To achieve the above object, a third aspect of the present application provides an electronic device, including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to enable the at least one processor to perform the method for online monitoring of shafting vibration of a nuclear turbine rotor and bearing system provided in the embodiments of the first aspect of the present application.
To achieve the above object, a fourth aspect of the present application provides a computer-readable storage medium having stored thereon computer instructions, where the computer instructions are used to cause a computer to execute the shafting vibration online safety monitoring method for a nuclear turbine rotor and bearing system provided in the first aspect of the present application.
To achieve the above object, a fifth aspect of the present application provides a computer program product, which includes a computer program, and the computer program, when executed by a processor, implements the method for online monitoring shafting vibration of a rotor and bearing system of a nuclear turbine provided in the first aspect of the present application.
Drawings
FIG. 1 is a schematic illustration of a combined monitoring platform for a nuclear turbine according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a method for online monitoring of shafting vibration of a rotor and bearing system of a nuclear turbine according to an embodiment of the present application;
FIG. 3 is a flow chart of an optimized control in a shafting vibration online safety monitoring method for a rotor and bearing system of a nuclear turbine according to an embodiment of the present application;
FIG. 4 is a flow chart of a method for online monitoring of shafting vibration safety for a specific type of nuclear turbine rotor and bearing system in accordance with an embodiment of the present application;
FIG. 5 is a block diagram of a shafting vibration on-line safety monitoring device for a rotor and bearing system of a nuclear turbine according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
FIG. 1 is a schematic view of a combined monitoring platform for a nuclear turbine according to one embodiment of the present application, as shown in FIG. 1, including:
a component model database 1, a load database 2, a materials database 3, a calculation server 4, a web server 5, and a client browser 6.
The component model database 1 stores component design parameters and three-dimensional mechanical models of the nuclear turbine, and the load database 2 stores a rigidity coefficient and a damping coefficient of a bearing oil film of the nuclear turbine and a peak value D of a shaft vibration relative displacement peak value D monitored on line by a shaft neck of a rotor of the nuclear turbinep-pr(mum) on-line monitoring vibration speed V with bearing seatb(mm/s) and start-stop curves of the nuclear turbine, a material database 3 stores physical properties, mechanical properties, high-temperature long-time mechanical properties and fatigue fracture mechanical properties of materials of the nuclear turbine, and a calculation server 4 comprises a memory, a processor and a nuclear turbine rotor of the nuclear turbine, wherein the nuclear turbine rotor is stored in the memory and can run on the processorAnd when the processor executes the computer program, the online safety monitoring method for the shafting vibration of the nuclear turbine rotor and the bearing system of the nuclear turbine is realized.
The design component model database 1, the load database 2 and the material database 3 are in communication connection with the computer server 4 and are used for sending mechanical models and data required by online safety monitoring of shaft system vibration of a nuclear turbine rotor and a bearing system of the nuclear turbine to the computer server 4;
the computer server 4 is in communication connection with the web server 5, the web server 5 is in communication connection with the client browser 6, and monitoring data or optimization information can be fed back to the web server 5 and the client browser 6 to be displayed.
The method, the device, the electronic equipment and the storage medium for monitoring the shafting vibration of the nuclear turbine rotor and bearing system of the nuclear turbine under the action of the rapid start thermal stress are described in the following by combining with the attached drawings.
It should be noted that the rotor and bearing system in the embodiment of the present application is a rotor and bearing system of a nuclear turbine.
Fig. 2 is a flowchart of a shafting vibration online safety monitoring method for a rotor and bearing system of a nuclear turbine according to an embodiment of the present application, and as shown in fig. 2, the method includes the following steps:
s201, obtaining a shaft vibration relative displacement peak value of a rotor journal and a bearing seat on-line monitoring vibration speed of a rotor and a bearing system of the nuclear power turbine, wherein the rotor journal and the bearing system bear the action of forced vibration and self-excited vibration, and taking the shaft vibration relative displacement peak value and the bearing seat on-line monitoring vibration speed as shaft system vibration on-line monitoring data of the rotor and the bearing system.
When the rotor and the bearing system bear the action of forced vibration and self-excited vibration, certain parts of the nuclear power turbine can be damaged to influence the safety and the service life of the nuclear power turbine.
Based on a component model database, a load database and a material database of the nuclear turbine, design parameters and a three-dimensional mechanical model of a rotor and a bearing system of the nuclear turbine, a rigidity coefficient and a damping coefficient of a bearing oil film and material mechanical property data are input, a shafting vibration design monitoring method and a subprogram of the rotor and the bearing system bearing the action of forced vibration and self-excited vibration are used, a shaft neck of the rotor of the nuclear turbine monitors a shaft vibration relative displacement peak value on line and a bearing seat monitors a vibration speed on line, and online safety monitoring of shafting vibration is carried out.
S202, determining online reliability monitoring data of shafting vibration according to the online monitoring data of the shafting vibration.
In the embodiment of the application, the online reliability monitoring data of the shafting vibration can comprise a ratio of the shaft vibration relative displacement and a ratio of the online monitoring vibration speed.
In some implementations, the ratio of the shaft vibration relative displacement of the rotor journal monitored online is determined according to the peak value of the shaft vibration relative displacement of the rotor journal monitored online by the following formula:
wherein R isp-prOn-line monitoring of the ratio of the shaft oscillations relative to the displacement for the shaft neck of a nuclear steam turbine rotor, Dp-prOn-line monitoring shaft vibration relative displacement peak value (mum), N for nuclear turbine rotor shaft neckp-prIs a preset value, optionally, in the embodiment of the present application, Np-prMay take 120.
In some implementations, an alarm value of the online monitoring vibration speed of the bearing pedestal is obtained, and the ratio of the online monitoring vibration speed is determined by adopting the following formula according to the alarm value and the online monitoring vibration speed of the bearing pedestal:
wherein R isbRatio, V, of vibration speeds for on-line monitoring of nuclear turbinesbMonitoring the vibration speed (mm/s) for the bearing seat on line, [ V ]b]An alarm value (mm/s) of the vibration speed is monitored on-line for the bearing block.
And S203, performing optimized operation and maintenance control on the nuclear turbine according to the online reliability monitoring data of the shafting vibration.
In some implementations, optimal operation and maintenance control can be performed on the rotor journal by monitoring the shaft vibration relative displacement on line according to the ratio of the shaft vibration relative displacement.
In some implementations, the on-line monitoring of the vibration speed of the bearing seat may be optimally controlled in operation and maintenance based on a ratio of the on-line monitoring of the vibration speed.
Optionally, the safety condition of the rotor and the bearing system of the nuclear power turbine can be judged according to the ratio of the relative displacement of the shaft vibration and the ratio of the online monitoring vibration speed, if the safety of the rotor and the bearing system does not meet the preset condition, the operation and maintenance control is optimized on the nuclear power turbine, and the service life and the safety of the nuclear power turbine are improved.
In the embodiment of the application, the shaft vibration relative displacement peak value and the bearing seat online monitoring vibration speed of a rotor journal, which bears the action of forced vibration and self-excited vibration, of a rotor and bearing system of a nuclear turbine are obtained and used as the shafting vibration online monitoring data of the rotor and bearing system, so that the online reliability monitoring data of the shafting vibration is determined, and the nuclear turbine is subjected to optimized operation and maintenance control. The embodiment of the application can accurately monitor the safety of the shaft system vibration of the rotor and the bearing system of the nuclear turbine and perform optimized operation and maintenance control on the nuclear turbine, so that the service life and the operation reliability of the nuclear turbine are improved, and the long-period safe operation of the nuclear turbine is ensured.
Fig. 3 is a flowchart illustrating an optimization control performed in a shafting vibration online safety monitoring method for a rotor and bearing system of a nuclear turbine according to an embodiment of the present application, and as shown in fig. 3, the method includes the following steps:
s301, obtaining a rotor journal on-line monitoring shaft vibration relative displacement peak value and a bearing seat on-line monitoring vibration speed of a rotor and a bearing system of the nuclear turbine under the action of forced vibration and self-excited vibration as shafting vibration on-line monitoring data of the rotor and the bearing system.
S302, determining online reliability monitoring data of shafting vibration according to the online monitoring data of the shafting vibration.
For the related description of step S301 and step S302, reference may be made to the contents in the foregoing embodiments, and details are not repeated here.
It should be noted that the online reliability monitoring data of the shafting vibration includes a ratio of the shaft vibration relative displacement and a ratio of the online monitoring vibration speed.
S303, carrying out optimized operation and maintenance control on the rotor shaft neck on-line monitoring of the shaft vibration relative displacement according to the ratio of the shaft vibration relative displacement.
Determining that the operation monitoring of the shaft vibration relative displacement of the rotor journal on-line monitoring is qualified in response to the fact that the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value; and determining that the operation monitoring of the rotor journal on-line monitoring of the shaft vibration relative displacement is not qualified in response to the fact that the ratio of the shaft vibration relative displacement is larger than or equal to a preset shaft vibration relative displacement ratio threshold value, and generating an optimization improvement strategy of the shaft vibration relative displacement.
Optionally, in this embodiment of the present application, the preset threshold value of the shaft vibration relative displacement ratio may be 1, that is, if R is, R is greater than or equal to the preset threshold value of the shaft vibration relative displacement ratiop-prIf the frequency is less than 1, the operation monitoring of the shaft vibration relative displacement of the nuclear turbine rotor journal on-line monitoring is qualified, which shows that the shaft vibration relative displacement of the nuclear turbine rotor journal on-line monitoring is in a controlled state, and if R is equal to R, the shaft vibration relative displacement of the nuclear turbine rotor journal on-line monitoring is in a controlled statep-prAnd the operation monitoring of the shaft vibration relative displacement of the nuclear power steam turbine rotor journal on line is unqualified, which indicates that the steam turbine rotor and the bearing need to be overhauled in the use stage, and the reason of overlarge rotor and bearing vibration is searched and improved, so that the nuclear power steam turbine is optimized, operated and maintained until the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value, and the optimization is finished.
S304, carrying out optimized operation and maintenance control on the online monitoring vibration speed of the bearing seat according to the ratio of the online monitoring vibration speed.
Determining that the operation monitoring of the online monitoring vibration speed of the bearing seat is qualified in response to the fact that the ratio of the online monitoring vibration speed is smaller than a preset vibration speed ratio threshold; and determining that the operation monitoring of the online monitoring vibration speed of the bearing seat is not qualified in response to the fact that the ratio of the online monitoring vibration speed is larger than or equal to a preset vibration speed ratio threshold value, and generating an optimization improvement strategy of the online monitoring vibration speed of the bearing seat.
Optionally, in the embodiment of the present application, the preset vibration speed ratio threshold is set to 1, that is, if R is equal to RbIf the vibration speed is qualified for monitoring the operation of the bearing seat of the nuclear power turbine on line, the vibration speed monitoring of the bearing seat of the nuclear power turbine on line is indicated to be in a controlled state, and if R is judged to be qualified, the vibration speed monitoring of the bearing seat of the nuclear power turbine on line is indicated to be in a controlled statebAnd the vibration speed on-line monitoring of the bearing seat of the nuclear turbine is unqualified, which indicates that the rotor and the bearing of the turbine need to be overhauled in the use stage, the reason of overlarge vibration of the rotor and the bearing is searched and improved, so that the operation and maintenance of the nuclear turbine are optimized and controlled until the ratio of the vibration speed on-line monitoring is smaller than the preset vibration speed ratio threshold value, and the optimization is finished.
Fig. 4 is a flowchart of a shafting vibration online safety monitoring method for a specific type of nuclear turbine rotor and bearing system according to an embodiment of the present application, and as shown in fig. 4, the method includes the following steps:
s401, inputting a shafting vibration online monitoring value of the rotor and bearing system under the action of forced vibration and self-excited vibration.
On the basis of a component model database 1, a load database 2 and a material database 3 of a nuclear turbine, a shafting vibration online safety monitoring method and a subprogram of a nuclear turbine rotor and bearing system are input, and a certain type 1200MW nuclear turbine rotor journal online monitoring shaft vibration relative displacement peak value D is inputp-pr100 mu m vibration speed V on-line monitored with bearing seatbAnd (4) carrying out online safety monitoring on shafting vibration.
S402, calculating the ratio of the shaft vibration relative displacement of the rotor journal on-line monitoring.
The shaft vibration relative displacement ratio R of the rotor shaft neck of the 1200MW nuclear power steam turbine is monitored on linep-prCalculated according to the following formula:
in the above formula, Dp-prThe peak value of the shaft vibration relative displacement peak is monitored by 100 microns on line for the shaft neck of the 1200MW nuclear power turbine rotor.
And S403, calculating the ratio of the online monitoring vibration speed of the bearing seat.
On-line monitoring vibration speed ratio R of bearing seat of 1200MW nuclear power turbinebCalculated according to the following formula:
in the above formula, VbOn-line monitoring of the vibration speed, V, for the bearing blocksb＝4mm/s，[Vb]Monitoring the alarm value (mm/s) of the vibration speed on line for the bearing seat, for n01500r/min and 1800r/min half-speed nuclear turbine [ V ]b]5.3mm/s for n03000r/min and 3600r/min full-speed nuclear turbine [ V ]b]＝7.5mm/s。
S404, the rotor journal monitors the optimization control of the shaft vibration relative displacement on line.
Through the optimization improvement strategy of the shaft vibration relative displacement, the shaft vibration relative displacement is monitored on line for the rotor shaft neck of the 1200MW nuclear steam turbine to carry out optimization control:
due to Rp-prWhen the shaft vibration relative displacement is monitored on line, the operation monitoring of the shaft vibration relative displacement of the rotor journal of the 1200MW nuclear power turbine is qualified, the shaft vibration relative displacement is monitored on line by the rotor journal of the nuclear power turbine in a controlled state, and the step S405 is entered.
S405, the bearing seat monitors the optimal control of the vibration speed on line.
Through the optimization and improvement strategy of the bearing seat on-line monitoring vibration speed, the on-line monitoring vibration speed of the bearing seat of the 1200MW nuclear power turbine is optimally designed and controlled:
in view of RbThe vibration speed operation monitoring of the bearing seat of the 1200MW nuclear turbine is qualified when the bearing seat is monitored on line and the vibration speed is less than 1, which indicates that the vibration speed of the bearing seat of the nuclear turbine is in a controlled state on line, and the on-line safety monitoring of the vibration of the shaft system is finished.
In other cases, if RbAnd (3) not less than 1, the operation monitoring of the on-line monitoring vibration speed of the bearing seat of the nuclear turbine is unqualified, which indicates that the rotor and the bearing of the turbine are required to be overhauled in the use stage, the reason for the overlarge vibration of the rotor and the bearing is searched and improved, and the steps S401 to S405 are executed again until RbUntil less than 1;
the embodiment of the application can accurately monitor the safety of the shafting vibration of the rotor and the bearing system of the nuclear turbine and perform optimized operation and maintenance control on the nuclear turbine, thereby prolonging the service life and the operation reliability of the nuclear turbine and ensuring the long-period safe operation of the nuclear turbine.
On the basis of the above embodiment, a monitoring report of the nuclear turbine may also be printed or output, where the monitoring report may include monitoring data of multiple dimensions under each target of the nuclear turbine and a corresponding optimization and improvement strategy. Optionally, information such as an optimization result of the nuclear turbine can be included.
As shown in fig. 5, based on the same application concept, an embodiment of the present application further provides an online safety monitoring device 500 for shaft system vibration of a rotor and a bearing system of a nuclear turbine, including:
the acquisition module 510 is used for acquiring a shaft neck online monitoring shaft vibration relative displacement peak value and a bearing seat online monitoring vibration speed of a rotor and a bearing system of the nuclear turbine, wherein the rotor and the bearing system bear the action of forced vibration and self-excited vibration, and the shaft neck online monitoring shaft vibration peak value and the bearing seat online monitoring vibration speed are used as shafting vibration online monitoring data of the rotor and the bearing system;
the determining module 520 is configured to determine online reliability monitoring data of shafting vibration according to the online monitoring data of shafting vibration;
and the optimizing module 530 is used for performing optimized operation and maintenance control on the nuclear turbine according to the online reliability monitoring data of the shafting vibration.
In one possible implementation, the determining module 520 is further configured to:
determining the ratio of the shaft vibration relative displacement of the rotor journal on-line monitoring according to the peak value of the shaft vibration relative displacement peak of the rotor journal on-line monitoring;
acquiring an alarm value of the online monitoring vibration speed of the bearing seat;
determining the ratio of the online monitored vibration speed according to the alarm value and the online monitored vibration speed of the bearing seat;
and determining the ratio of the relative displacement of the shaft vibration and the ratio of the online monitoring vibration speed as online reliability monitoring data of the vibration of the shaft system.
In one possible implementation, the optimizing module 530 is further configured to:
according to the ratio of the shaft vibration relative displacement, carrying out optimized operation and maintenance control on the rotor journal on-line monitoring shaft vibration relative displacement;
and carrying out optimized operation and maintenance control on the online monitoring vibration speed of the bearing seat according to the ratio of the online monitoring vibration speed.
In one possible implementation, the optimizing module 530 is further configured to:
determining that the operation monitoring of the shaft vibration relative displacement of the rotor journal on-line monitoring is qualified in response to the fact that the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value;
in response to the fact that the ratio of the shaft vibration relative displacement is larger than or equal to a preset shaft vibration relative displacement ratio threshold value, determining that the operation monitoring of the rotor journal for online monitoring of the shaft vibration relative displacement is not qualified, and generating an optimization improvement strategy of the shaft vibration relative displacement;
and performing optimized operation and maintenance control on the nuclear turbine according to an optimized and improved strategy of the shaft vibration relative displacement until the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value, and finishing the optimization.
In one possible implementation, the optimizing module 530 is further configured to:
determining that the operation monitoring of the online monitoring vibration speed of the bearing seat is qualified in response to the fact that the ratio of the online monitoring vibration speed is smaller than a preset vibration speed ratio threshold;
responding to the fact that the ratio of the online monitoring vibration speed is larger than or equal to a preset vibration speed ratio threshold value, determining that the online monitoring vibration speed operation monitoring of the bearing seat is not qualified, and generating an optimization and improvement strategy of the online monitoring vibration speed of the bearing seat;
and carrying out optimized operation and maintenance control on the nuclear turbine according to an optimized and improved strategy of the on-line monitoring vibration speed of the bearing seat until the ratio of the on-line monitoring vibration speed is smaller than a preset vibration speed ratio threshold value, and finishing the optimization.
The embodiment of the application can accurately monitor the safety of the shafting vibration of the rotor and the bearing system of the nuclear turbine and perform optimized operation and maintenance control on the nuclear turbine, thereby prolonging the service life and the operation reliability of the nuclear turbine and ensuring the long-period safe operation of the nuclear turbine.
Based on the same application concept, the embodiment of the application also provides the electronic equipment.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the electronic device 600 includes a memory 610, a processor 620 and a computer program product stored in the memory 610 and executable on the processor 620, and when the processor executes the computer program, the method for monitoring shafting vibration of a rotor and bearing system of a nuclear turbine on-line safety is implemented.
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 process and/or block of the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations 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.
Based on the same application concept, embodiments of the present application further provide a computer-readable storage medium, on which computer instructions are stored, where the computer instructions are used to enable a computer to execute the shafting vibration online safety monitoring method for a rotor and bearing system of a nuclear turbine in the above embodiments.
Based on the same application concept, embodiments of the present application further provide a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for monitoring shafting vibration of a nuclear turbine rotor and bearing system on line in the above embodiments is provided.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (13)
1. A shafting vibration online safety monitoring method for a nuclear turbine rotor and bearing system is characterized by comprising the following steps:
acquiring a shaft neck online monitoring shaft vibration relative displacement peak value and a bearing seat online monitoring vibration speed of a rotor and a bearing system of a nuclear turbine under the action of forced vibration and self-excited vibration, and taking the shaft neck online monitoring shaft vibration relative displacement peak value and the bearing seat online monitoring vibration speed as shafting vibration online monitoring data of the rotor and the bearing system;
determining online reliability monitoring data of the shafting vibration according to the shafting vibration online monitoring data;
and performing optimized operation and maintenance control on the nuclear turbine according to the online reliability monitoring data of the shafting vibration.
2. The method of claim 1, wherein said determining online reliability monitoring data of said shafting vibration from said online monitoring data of shafting vibration comprises:
determining the ratio of the shaft vibration relative displacement of the rotor journal on-line monitoring according to the peak value of the shaft vibration relative displacement peak of the rotor journal on-line monitoring;
acquiring an alarm value of the online monitoring vibration speed of the bearing seat;
determining the ratio of the online monitoring vibration speed according to the alarm value and the online monitoring vibration speed of the bearing seat;
and determining the ratio of the relative displacement of the shaft vibration and the ratio of the online monitoring vibration speed as online reliability monitoring data of the shafting vibration.
3. The method of claim 2, wherein the performing optimized operation and maintenance control on the nuclear turbine according to the online reliability monitoring data of the shafting vibration comprises:
carrying out optimized operation and maintenance control on the shaft vibration relative displacement monitored by the rotor shaft neck on line according to the ratio of the shaft vibration relative displacement;
and carrying out optimized operation and maintenance control on the online monitoring vibration speed of the bearing seat according to the ratio of the online monitoring vibration speed.
4. The method of claim 3, wherein the performing the optimized operation and maintenance control on the rotor journal for online monitoring of the shaft vibration relative displacement according to the ratio of the shaft vibration relative displacement comprises:
responding to the fact that the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value, and determining that the operation monitoring of the rotor shaft neck on-line monitoring shaft vibration relative displacement is qualified;
responding to the fact that the ratio of the shaft vibration relative displacement is larger than or equal to the preset shaft vibration relative displacement ratio threshold value, determining that the operation monitoring of the rotor journal for online monitoring of the shaft vibration relative displacement is not qualified, and generating an optimization improvement strategy of the shaft vibration relative displacement;
and carrying out optimized operation and maintenance control on the nuclear turbine according to the optimized improvement strategy of the shaft vibration relative displacement until the ratio of the shaft vibration relative displacement is smaller than the preset shaft vibration relative displacement ratio threshold value, and finishing the optimization.
5. The method of claim 3, wherein the performing optimized operation and maintenance control on the online monitored vibration speed of the bearing seat according to the ratio of the online monitored vibration speed comprises:
responding to the fact that the ratio of the online monitoring vibration speed is smaller than a preset vibration speed ratio threshold value, and determining that the online monitoring vibration speed of the bearing seat is qualified in operation monitoring;
responding to the fact that the ratio of the online monitoring vibration speed is larger than or equal to a preset vibration speed ratio threshold value, determining that the online monitoring vibration speed operation monitoring of the bearing seat is not qualified, and generating an optimization improvement strategy of the online monitoring vibration speed of the bearing seat;
and carrying out optimized operation and maintenance control on the nuclear turbine according to an optimized and improved strategy of the online monitoring vibration speed of the bearing seat until the ratio of the online monitoring vibration speed is smaller than the preset vibration speed ratio threshold value, and finishing optimization.
6. The utility model provides an online safety monitoring device of nuclear power steam turbine rotor and bearing system's shafting vibration which characterized in that includes:
the system comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring the online monitoring shaft vibration relative displacement peak value of a rotor journal and the online monitoring vibration speed of a bearing seat of a rotor and a bearing system of a nuclear power steam turbine under the action of forced vibration and self-excited vibration as the online monitoring data of the shafting vibration of the rotor and the bearing system;
the determining module is used for determining online reliability monitoring data of the shafting vibration according to the online monitoring data of the shafting vibration;
and the optimization module is used for carrying out optimized operation and maintenance control on the nuclear power turbine according to the online reliability monitoring data of the shafting vibration.
7. The apparatus of claim 6, wherein the determining module is further configured to:
determining the ratio of the shaft vibration relative displacement of the rotor journal on-line monitoring according to the peak value of the shaft vibration relative displacement peak of the rotor journal on-line monitoring;
acquiring an alarm value of the online monitoring vibration speed of the bearing seat;
determining the ratio of the online monitoring vibration speed according to the online monitoring vibration speed of the bearing seat;
and determining the ratio of the relative displacement of the shaft vibration and the ratio of the online monitoring vibration speed as online reliability monitoring data of the shafting vibration.
8. The apparatus of claim 7, wherein the optimization module is further configured to:
carrying out optimized operation and maintenance control on the shaft vibration relative displacement monitored by the rotor shaft neck on line according to the ratio of the shaft vibration relative displacement;
and carrying out optimized operation and maintenance control on the online monitoring vibration speed of the bearing seat according to the ratio of the online monitoring vibration speed.
9. The apparatus of claim 8, wherein the optimization module is further configured to:
responding to the fact that the ratio of the shaft vibration relative displacement is smaller than a preset shaft vibration relative displacement ratio threshold value, and determining that the operation monitoring of the rotor shaft neck on-line monitoring shaft vibration relative displacement is qualified;
responding to the fact that the ratio of the shaft vibration relative displacement is larger than or equal to the preset shaft vibration relative displacement ratio threshold value, determining that the operation monitoring of the rotor journal for online monitoring of the shaft vibration relative displacement is not qualified, and generating an optimization improvement strategy of the shaft vibration relative displacement;
and carrying out optimized operation and maintenance control on the nuclear turbine according to the optimized improvement strategy of the shaft vibration relative displacement until the ratio of the shaft vibration relative displacement is smaller than the preset shaft vibration relative displacement ratio threshold value, and finishing the optimization.
10. The apparatus of claim 8, wherein the optimization module is further configured to:
responding to the fact that the ratio of the online monitoring vibration speed is smaller than a preset vibration speed ratio threshold value, and determining that the online monitoring vibration speed of the bearing seat is qualified in operation monitoring;
responding to the fact that the ratio of the online monitoring vibration speed is larger than or equal to a preset vibration speed ratio threshold value, determining that the online monitoring vibration speed operation monitoring of the bearing seat is not qualified, and generating an optimization improvement strategy of the online monitoring vibration speed of the bearing seat;
and carrying out optimized operation and maintenance control on the nuclear turbine according to an optimized and improved strategy of the online monitoring vibration speed of the bearing seat until the ratio of the online monitoring vibration speed is smaller than the preset vibration speed ratio threshold value, and finishing optimization.
11. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-5.
12. A non-transitory computer readable storage medium having stored thereon computer instructions for causing the computer to perform the method of any one of claims 1-5.
13. A computer program product comprising a computer program which, when executed by a processor, implements the method according to any one of claims 1-5.
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