CN114412590A - Online safety monitoring method for flange bisection tightness of nuclear turbine cylinder - Google Patents
Online safety monitoring method for flange bisection tightness of nuclear turbine cylinder 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
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Abstract
The application provides an online safety monitoring method and device for the tightness of a split surface in a flange of a nuclear turbine cylinder, and relates to the technical field of nuclear turbines. The method comprises the steps of obtaining a monitoring temperature threshold value of the tightness of a split surface in a flange of a nuclear turbine cylinder; acquiring the outside metal temperature of the split tightness of the flange of the cylinder; determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature threshold value and the outside metal temperature; and performing optimized control on the nuclear turbine according to the safe operation monitoring data of the tightness of the split surface in the flange. According to the method and the device, the nuclear turbine is optimally controlled under the unqualified condition through online safety monitoring of the tightness of the split surface in the flange of the nuclear turbine cylinder, so that the nuclear turbine can achieve long service life and high reliability.
Description
Technical Field
The application relates to the technical field of nuclear turbines, in particular to an online safety monitoring method and device for the tightness of a flange median plane of a nuclear turbine cylinder.
Background
In the related technology, a nuclear turbine bears various damage mechanism effects in operation, and a nuclear turbine cylinder bears the force load, the thermal load and the bolt pretightening force load effect and faces the risk of steam leakage of a cylinder flange middle split surface.
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, an object of the present application is to provide an online safety monitoring method for the tightness of a flange split surface of a nuclear turbine cylinder, which includes: acquiring a monitoring temperature threshold value of the tightness of a flange median plane of a nuclear turbine cylinder; acquiring the temperature of the outside metal with the tightness of the split surface in the flange of the cylinder; determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature limit value and the outside metal temperature; and performing optimized control on the nuclear turbine according to the safe operation monitoring data of the tightness of the split surface in the flange.
According to the method and the device, the nuclear turbine is optimally controlled under the unqualified condition through online safety monitoring of the tightness of the split surface in the flange of the nuclear turbine cylinder, so that the nuclear turbine can achieve long service life and high reliability.
The second purpose of the application is to provide an online safety monitoring device for the tightness of the flange median plane of a nuclear turbine cylinder.
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 tightness of flange split of a nuclear turbine cylinder, including: acquiring a monitoring temperature limit value of the tightness of a flange median plane of a nuclear turbine cylinder; acquiring the temperature of the outside metal with the tightness of the split surface in the flange of the cylinder; determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature limit value and the outside metal temperature; and performing optimized control on the nuclear turbine according to the safe operation monitoring data of the tightness of the split surface in the flange.
According to the method and the device, the nuclear turbine is optimally controlled under the unqualified condition through online safety monitoring of the tightness of the split surface in the flange of the nuclear turbine cylinder, so that the nuclear turbine can achieve long service life and high reliability.
According to the embodiment of the application, the method for acquiring the monitoring temperature limit value of the tightness of the split surface in the flange of the nuclear turbine cylinder comprises the following steps: and determining the weakest part of the flange split surface of the cylinder, and determining the metal temperature threshold value outside the flange split surface when the weakest part of the cylinder is subjected to steam leakage as the monitoring temperature threshold value.
According to the embodiment of the application, the acquiring of the outside metal temperature of the split tightness of the flange of the cylinder comprises the following steps: monitoring the temperature of the weakest part of the split surface tightness in the flange of the cylinder; and monitoring the temperature of the weakest part of the tightness on line, and determining the temperature as the temperature of the outside metal.
According to the embodiment of the application, the determining the weakest part of the split tightness of the flange of the cylinder and determining the metal temperature threshold value outside the split tightness of the flange when steam leakage occurs at the weakest part as the monitoring temperature threshold value comprises the following steps: acquiring design parameters of the cylinder and material performance data of the nuclear turbine; acquiring pressure and thermal load of the cylinder and bolt pretightening force load; calling a three-dimensional mechanical model of the nuclear turbine; and acquiring the outside metal temperature limit value based on the design parameters of the cylinder, the pressure and heat load of the cylinder, the bolt pretightening force load, the material performance data and the three-dimensional mechanical model.
According to the embodiment of the application, the determining safe operation monitoring data of the flange middle section according to the monitoring temperature limit value and the outside metal temperature comprises the following steps: and determining the outer metal temperature ratio of the middle section of the flange as the safe operation monitoring data according to the outer metal temperature and the monitoring temperature threshold value.
According to the embodiment of the application, the optimal control of the nuclear turbine is carried out according to the safe operation monitoring data of the flange median plane tightness, and the optimal control comprises the following steps: responding to the condition that the temperature ratio of the outer side metal is smaller than a preset temperature ratio threshold value, and determining that the operation monitoring of the split steam leakage in the flange of the cylinder is qualified; responding to the condition that the temperature ratio of the outer side metal is larger than or equal to the preset temperature ratio threshold value, determining that the operation monitoring of the flange middle section steam leakage of the cylinder is not qualified, and generating a steam leakage optimization improvement strategy of the nuclear power turbine; and performing optimization control on the nuclear power turbine according to the steam leakage optimization improvement strategy until the temperature ratio of the outside metal is smaller than a preset temperature ratio threshold value, and finishing optimization.
According to an embodiment of the application, the optimizing control of the nuclear turbine according to the steam leakage optimization improvement strategy includes: acquiring an adjusting part of the nuclear turbine according to the steam leakage optimization improvement strategy; and performing optimization control on the adjusting component according to the adjusting parameter of the adjusting component in the steam leakage optimization improvement strategy.
In order to achieve the above object, an embodiment of the second aspect of the present application provides an online safety monitoring device for tightness of flange split of a nuclear turbine cylinder, including: the first acquisition module is used for acquiring a monitoring temperature threshold value of the tightness of a section in a flange of a nuclear turbine cylinder; the second acquisition module is used for acquiring the outside metal temperature of the tightness of the split surface in the flange of the cylinder; the determining module is used for determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature limit value and the outside metal temperature; and the optimization module is used for carrying out optimization control on the nuclear turbine according to the safe operation monitoring data of the flange median plane tightness.
According to an embodiment of the present application, the first obtaining module is further configured to: and determining the weakest part of the tightness of the flange middle section of the cylinder, and determining the metal temperature threshold value outside the flange middle section when the weakest part of the tightness leaks steam as the monitoring temperature threshold value.
According to an embodiment of the present application, the second obtaining module is further configured to: monitoring the temperature of the weakest part of the flange median plane tightness of the cylinder; and monitoring the temperature of the weakest part of the tightness on line, and determining the temperature as the temperature of the outside metal.
According to an embodiment of the present application, the first obtaining module is further configured to: acquiring design parameters of the cylinder and material performance data of the nuclear turbine; acquiring the pressure and the thermal load of the cylinder and the pretightening force load of the bolt; calling a three-dimensional mechanical model of the nuclear turbine; and acquiring the outside metal temperature threshold value based on the design parameters of the cylinder, the pressure and heat load of the cylinder, the bolt pretightening force load, the material performance data and the three-dimensional mechanical model.
According to an embodiment of the application, the determining module is further configured to: and determining the ratio of the outside metal temperature of the middle section of the flange as the safe operation monitoring data according to the outside metal temperature and the monitoring temperature threshold value.
According to an embodiment of the application, the optimization module is further configured to: responding to the condition that the temperature ratio of the outer side metal is smaller than a preset temperature ratio threshold value, and determining that the operation monitoring of the split steam leakage in the flange of the cylinder is qualified; responding to the condition that the temperature ratio of the outer side metal is larger than or equal to the preset temperature ratio threshold value, determining that the operation monitoring of the steam leakage of the flange middle section of the cylinder is not qualified, and generating a steam leakage optimization improvement strategy of the nuclear power turbine; and performing optimization control on the nuclear turbine according to the steam leakage optimization improvement strategy until the outside metal temperature ratio is smaller than a preset temperature ratio threshold value, and finishing the optimization.
According to an embodiment of the application, the optimization module is further configured to: obtaining an adjusting part of the nuclear turbine according to the steam leakage optimization and improvement strategy; and performing optimization control on the adjusting component according to the adjusting parameters of the adjusting component in the steam leakage optimization improvement strategy.
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 implement a method for online security monitoring of split tightness in a flange of a nuclear turbine cylinder according to an embodiment of the first aspect of the present application.
To achieve the above object, a non-transitory computer readable storage medium storing computer instructions for implementing the method for online security monitoring of flange split tightness of a nuclear turbine cylinder according to the embodiment of the first aspect of the present application is provided in the fourth 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 when the computer program is executed by a processor, the computer program implements the online safety monitoring method for split tightness in a flange of a nuclear turbine cylinder according to the first aspect of the present application.
Drawings
FIG. 1 is a schematic view of a combined monitoring platform for a nuclear turbine according to one embodiment of the present application.
FIG. 2 is a schematic diagram of a method for online security monitoring of a flange split tightness of a nuclear turbine cylinder according to an embodiment of the present application.
FIG. 3 is a schematic illustration of an embodiment of the present application for optimizing control of a nuclear power turbine.
FIG. 4 is a schematic diagram of an exemplary value of a method for online security monitoring of flange split tightness of a nuclear turbine cylinder according to an embodiment of the present application.
FIG. 5 is a schematic diagram of an online safety monitoring device for split tightness in a flange of a nuclear turbine cylinder according to an embodiment of the present application.
FIG. 6 is a schematic view of an electronic device of an embodiment of the 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 combined monitoring platform of a nuclear turbine according to an embodiment of the present application, as shown in fig. 1, the combined monitoring platform includes:
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 a three-dimensional mechanical model of the nuclear turbine, the load database 2 stores pressure load and centrifugal force load of the nuclear turbine, the material database 3 stores material physical property and material mechanical property of the nuclear turbine, the calculation server 4 comprises a memory, a processor and an online safety monitoring computer program which is stored on the memory and can run on the processor and used for monitoring the tightness of the flange middle section of the nuclear turbine cylinder, and when the processor executes the computer program, the online safety monitoring method for the tightness of the flange middle section of the nuclear turbine cylinder is realized.
The 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 the tightness of the split surfaces of the flanges of the nuclear turbine cylinders to the computer server.
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 online safety monitoring of the split tightness of the flange of the nuclear turbine cylinder are described below with reference to the accompanying drawings.
Fig. 2 is an exemplary embodiment of an online safety monitoring method for the tightness of a flange median plane of a nuclear turbine cylinder according to the present application, and as shown in fig. 2, the online safety monitoring method for the tightness of a flange median plane of a nuclear turbine cylinder includes the following steps:
s201, acquiring a monitoring temperature threshold value of the tightness of a flange median plane of a nuclear turbine cylinder.
Based on a component model library server, a load database server and a material database server of a nuclear turbine, design parameters and a three-dimensional mechanical model of a cylinder of the nuclear turbine, pressure and thermal load of the cylinder and bolt pretightening force load and material performance data are input, a method and a subprogram for monitoring the split tightness operation of a flange of the cylinder are used for calculating and obtaining a metal temperature limit value [ t & lt/EN & gt at the outer side of the split of the flange under the condition that steam leakage occurs at the position with the weakest split tightness of the flange of the cylinder of the nuclear turbinec]。
S202, obtaining the outer metal temperature of the cylinder flange split surface tightness.
Based on a nuclear turbine load database, temperature monitoring is carried out on the weakest part of the flange split surface of the cylinder, the temperature of the weakest part of the flange split surface is monitored on line, and the temperature is determined as the outside metal temperature tc。
And S203, determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature limit value and the outside metal temperature.
And determining the ratio of the outside metal temperature of the middle section of the flange according to the outside metal temperature and the monitoring temperature threshold value, and taking the ratio as safe operation monitoring data.
Metal temperature ratio R at outer side of flange split surface of nuclear turbine cylindertcCalculated according to the following formula:
in the above formula, tcMonitoring a temperature value for the weakest part of the tightness of the flange median plane of a nuclear turbine cylinder on line; [ t ] ofc]The metal temperature limit value is the metal temperature limit value at the outer side of the flange median plane under the condition that the steam leakage occurs at the weakest part of the flange median plane tightness of the nuclear turbine cylinder.
And S204, performing optimized control on the nuclear turbine according to the safe operation monitoring data of the flange median plane tightness.
And judging whether the flange middle section steam leakage operation monitoring of the cylinder is qualified or not and whether the flange middle section steam leakage operation monitoring of the cylinder of the nuclear power turbine is qualified or not according to the obtained safety operation monitoring data of the flange middle section tightness, and carrying out optimization control on the nuclear power turbine if the flange middle section steam leakage operation monitoring of the cylinder is unqualified and the flange middle section steam leakage of the cylinder of the nuclear power turbine is unqualified.
The application provides an online safety monitoring method for the tightness of a flange median plane of a nuclear turbine cylinder, which comprises the steps of obtaining a monitoring temperature threshold value of the tightness of the flange median plane of the nuclear turbine cylinder; acquiring the outside metal temperature of the split tightness of the flange of the cylinder; determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature threshold value and the outside metal temperature; and performing optimized control on the nuclear turbine according to the safe operation monitoring data of the tightness of the split surface in the flange. According to the method and the device, the nuclear turbine is optimally controlled under the unqualified condition through online safety monitoring of the tightness of the split surface in the flange of the nuclear turbine cylinder, so that the nuclear turbine can achieve long service life and high reliability.
Fig. 3 is an exemplary embodiment of a method for online safety monitoring of the tightness of a flange median plane of a nuclear turbine cylinder according to the present application, and as shown in fig. 3, the method for online safety monitoring of the tightness of a flange median plane of a nuclear turbine cylinder includes the following steps:
s301, acquiring a monitoring temperature threshold value of the tightness of the split surface in the flange of the nuclear turbine cylinder.
As for the implementation of step S301, the implementation in each embodiment in the present application can be adopted, and will not be described here.
S302, obtaining the outer metal temperature of the cylinder flange split surface tightness.
As for the implementation manner of step S302, the implementation manner in each embodiment in the present application can be adopted, and will not be described here.
And S303, determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature limit value and the outside metal temperature.
As for the implementation manner of step S303, the implementation manner in each embodiment in the present application can be adopted, and will not be described here.
S304, responding to the condition that the temperature ratio of the outer side metal is smaller than a preset temperature ratio threshold value, and determining that the operation monitoring of steam leakage of the middle section of the flange of the cylinder is qualified.
And setting a temperature ratio threshold, and if the temperature ratio of the outside metal is smaller than the preset temperature ratio threshold, determining that the operation monitoring of the steam leakage of the middle section of the flange of the cylinder is qualified. Illustratively, the temperature ratio threshold is set to 1 if RtcIf the steam leakage operation is less than 1, determining that the operation monitoring of the steam leakage of the flange middle section of the nuclear turbine cylinder is qualified, and indicating that no steam leakage occurs in the flange middle section of the nuclear turbine cylinder.
S305, responding to the condition that the temperature ratio of the outer side metal is larger than or equal to the preset temperature ratio threshold, determining that the operation monitoring of the flange middle section steam leakage of the cylinder is not qualified, and generating a steam leakage optimization improvement strategy of the nuclear turbine.
And if the temperature ratio of the outer side metal is greater than or equal to the preset temperature ratio threshold, determining that the steam leakage operation monitoring of the flange middle section of the cylinder is not qualified, and generating a steam leakage optimization improvement strategy of the nuclear turbine. Illustratively, the temperature ratio threshold is set to 1 if RtcIf the steam leakage monitoring is not less than 1, determining that the steam leakage monitoring of the flange midplanes of the nuclear turbine cylinder is unqualified, indicating that the steam leakage occurs in the flange midplanes of the nuclear turbine cylinder in the operation stage,there is a need for generating steam leakage optimization and improvement strategies for nuclear turbines.
S306, performing optimization control on the nuclear turbine according to a steam leakage optimization improvement strategy until the outside metal temperature ratio is smaller than a preset temperature ratio threshold value, and finishing optimization.
And acquiring an adjusting part of the nuclear turbine according to the steam leakage optimization improvement strategy, and performing optimization control on the adjusting part according to the adjusting parameters of the adjusting part in the steam leakage optimization improvement strategy. Optionally, the nuclear turbine can be repaired after shutdown, and bolt pretightening force is increased.
According to the method and the device, the nuclear turbine is optimally controlled under the unqualified condition through online safety monitoring of the tightness of the split surface in the flange of the nuclear turbine cylinder, so that the nuclear turbine can achieve long service life and high reliability.
Fig. 4 is an exemplary embodiment of an online safety monitoring method for the tightness of a flange median plane of a nuclear turbine cylinder according to the present application, and as shown in fig. 4, the online safety monitoring method for the tightness of a flange median plane of a nuclear turbine cylinder includes the following steps:
s401, the cylinder flange middle section strictly monitors a temperature limit value.
Exemplarily, based on a component model library server 1, a load database server 2 and a material database server 3 of a nuclear turbine, design parameters and a three-dimensional mechanical model of a 1200MW nuclear turbine cylinder, pressure and thermal load of the cylinder, bolt pretightening force load and material performance data are input, an online safety monitoring method and a subprogram of tightness of a flange mid-section of the nuclear turbine cylinder are used, the weakest part of the tightness of the flange mid-section of the 1200MW nuclear turbine cylinder is calculated to be located at a steam inlet part of a double-flow high-pressure cylinder, and a metal temperature limit value [ t ] outside the flange mid-section under the condition of steam leakagec]＝279℃。
S402, monitoring the metal temperature on the outer side of the middle section of the flange at the weakest part of the tightness of the surface on line.
On-line monitoring of 1200MW nuclear power steam of the model based on nuclear power turbine load databaseOn-line monitoring temperature of the weakest part of the flange split surface tightness of the turbine cylinder, wherein the temperature is used as the outside metal temperature which is tc＝264℃。
And S403, calculating the metal temperature ratio of the outer side of the flange middle section of the nuclear turbine cylinder.
Metal temperature ratio R of outer side of flange split of 1200MW nuclear power turbine cylindertcCalculated according to the following formula:
in the above formula, tcThe on-line monitoring value of the metal temperature at the outer side of the weakest part of the flange split surface tightness of the cylinder of the 1200MW nuclear power turbine is 264℃ and tc]The metal temperature limit value at the outer side of the flange median plane is 279 ℃ under the condition that steam leakage occurs to the weakest part of the flange median plane tightness of the cylinder of the 1200MW nuclear power turbine.
S404, optimally controlling the steam leakage of the flange middle section of the nuclear turbine cylinder.
The optimal design control is carried out on the flange split steam leakage of the 1200MW nuclear turbine cylinder by a flange split tight operation monitoring method under the action of bearing force load, thermal load and bolt pretightening force load of the nuclear turbine cylinder.
If R istcAnd (3) less than 1, the operation monitoring of the steam leakage of the flange median plane of the 1200MW nuclear turbine cylinder is qualified, and the condition that the steam leakage does not occur on the flange median plane of the 1200MW nuclear turbine cylinder is shown.
If R istcAnd the operation monitoring is unqualified when the steam leakage of the flange midportion of the 1200MW nuclear turbine cylinder is larger than or equal to 1, which indicates that the steam leakage of the flange midportion of the 1200MW nuclear turbine cylinder occurs. Generating a steam leakage optimization and improvement strategy of the nuclear turbine, acquiring an adjusting part of the nuclear turbine according to the steam leakage optimization and improvement strategy, and optimizing the adjusting part according to an adjusting parameter of the adjusting part in the steam leakage optimization and improvement strategyAnd (5) chemical control.
According to the method and the device, the nuclear turbine is optimally controlled under the unqualified condition through online safety monitoring of the tightness of the split surface in the flange of the nuclear turbine cylinder, so that the nuclear turbine can achieve long service life and high reliability.
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, the optimization method also can comprise information such as an optimization result of the nuclear turbine.
Fig. 5 is a schematic diagram of an online safety monitoring device for the tightness of a flange median plane of a nuclear turbine cylinder according to the present application, and as shown in fig. 5, the online safety monitoring device 500 for the tightness of a flange median plane of a nuclear turbine cylinder includes a first obtaining module 51, a second obtaining module 52, a determining module 53 and an optimizing module 54, where:
the first obtaining module 51 is configured to obtain a monitoring temperature threshold value of a flange split tightness of a nuclear turbine cylinder.
And a second obtaining module 52 for obtaining the outside metal temperature of the cylinder flange split tightness.
And the determining module 53 is used for determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature limit value and the outside metal temperature.
And the optimization module 54 is used for performing optimization control on the nuclear turbine according to the safe operation monitoring data of the flange split tightness.
Further, the first obtaining module 51 is further configured to: and determining the weakest part of the flange middle section of the cylinder, and determining the metal temperature threshold value outside the flange middle section when the steam leakage occurs at the weakest part of the cylinder as the monitoring temperature threshold value.
Further, the second obtaining module 52 is further configured to: monitoring the temperature of the weakest part of the flange median plane tightness of the cylinder; and (4) determining the temperature of the weakest part with the tightness as the temperature of the outside metal by online monitoring.
Further, the first obtaining module 51 is further configured to: acquiring design parameters of a cylinder and material performance data of a nuclear turbine; acquiring the pressure and the thermal load of a cylinder and the pretightening force load of a bolt; calling a three-dimensional mechanical model of the nuclear turbine; and acquiring an outside metal temperature threshold value based on design parameters of the cylinder, pressure and heat load of the cylinder, bolt pretightening force load, material performance data and a three-dimensional mechanical model.
Further, the determining module 53 is further configured to: and determining the ratio of the outside metal temperature of the middle section of the flange as safe operation monitoring data according to the outside metal temperature and the monitoring temperature threshold value.
Further, the optimizing module 54 is further configured to: responding to the condition that the temperature ratio of the outer side metal is smaller than a preset temperature ratio threshold value, and determining that the operation monitoring of the split steam leakage in the flange of the cylinder is qualified; responding to the condition that the temperature ratio of the outer side metal is larger than or equal to a preset temperature ratio threshold value, determining that the operation monitoring of the flange middle section steam leakage of the cylinder is not qualified, and generating a steam leakage optimization improvement strategy of the nuclear turbine; and performing optimization control on the nuclear turbine according to a steam leakage optimization improvement strategy until the temperature ratio of the outside metal is smaller than a preset temperature ratio threshold value, and finishing the optimization.
Further, the optimizing module 54 is further configured to: obtaining an adjusting part of the nuclear turbine according to a steam leakage optimization and improvement strategy; and performing optimization control on the adjusting component according to the adjusting parameter of the adjusting component in the steam leakage optimization improvement strategy.
In order to implement the foregoing embodiments, an embodiment of the present application further provides an electronic device 600, as shown in fig. 6, where the electronic device 600 includes: a processor 601 and a memory 602 communicatively coupled to the processor, the memory 602 storing instructions executable by the at least one processor, the instructions being executable by the at least one processor 601 to implement a method for online security monitoring of split tightness in a flange of a nuclear turbine cylinder as described in the above embodiments.
In order to implement the above embodiments, the present application further provides a non-transitory computer readable storage medium storing computer instructions, wherein the computer instructions are used for enabling a computer to implement the online safety monitoring method for the split tightness in the flange of the nuclear turbine cylinder as shown in the above embodiments.
In order to implement the foregoing embodiments, a computer program product is further provided in an embodiment of the present application, and includes a computer program, and when the computer program is executed by a processor, the method for online safety monitoring of the tightness of the split in the flange of the nuclear turbine cylinder as shown in the foregoing embodiments is implemented.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
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.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (17)
1. An online safety monitoring method for the tightness of a split surface in a flange of a nuclear turbine cylinder is characterized by comprising the following steps:
acquiring a monitoring temperature threshold value of the tightness of a flange median plane of a nuclear turbine cylinder;
acquiring the temperature of the outside metal with the tightness of the split surface in the flange of the cylinder;
determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature limit value and the outside metal temperature;
and performing optimized control on the nuclear turbine according to the safe operation monitoring data of the tightness of the split surface in the flange.
2. The method of claim 1, wherein obtaining a monitored temperature threshold for flange mid-plane tightness of a nuclear turbine cylinder comprises:
and determining the weakest part of the flange median plane tightness of the cylinder, and determining the metal temperature threshold value outside the flange median plane when the weakest part of the tightness is subjected to steam leakage as the monitoring temperature threshold value.
3. The method of claim 1, wherein said obtaining an outside metal temperature of a flange split tightness of said cylinder comprises:
monitoring the temperature of the weakest part of the split surface tightness in the flange of the cylinder;
and monitoring the temperature of the weakest part of the tightness on line, and determining the temperature as the temperature of the outside metal.
4. The method of claim 2, wherein the determining a weakest tightness point of a flange mid-plane of the cylinder and determining a metal temperature threshold value outside the flange mid-plane when steam leakage occurs at the weakest tightness point as the monitoring temperature threshold value comprises:
acquiring design parameters of the cylinder and material performance data of the nuclear turbine;
acquiring the pressure and the thermal load of the cylinder and the pretightening force load of the bolt;
calling a three-dimensional mechanical model of the nuclear turbine;
and acquiring the outside metal temperature threshold value based on the design parameters of the cylinder, the pressure and heat load of the cylinder, the bolt pretightening force load, the material performance data and the three-dimensional mechanical model.
5. The method of any one of claims 1-4, wherein determining safe operation monitoring data for the flange midplanes based on the monitored temperature threshold and the outside metal temperature comprises:
and determining the outer metal temperature ratio of the middle section of the flange as the safe operation monitoring data according to the outer metal temperature and the monitoring temperature threshold value.
6. The method of claim 1, wherein said optimizing control of said nuclear turbine based on said safe operation monitoring data of said flange split tightness comprises:
responding to the condition that the temperature ratio of the outer side metal is smaller than a preset temperature ratio threshold value, and determining that the operation monitoring of the split steam leakage in the flange of the cylinder is qualified;
responding to the condition that the temperature ratio of the outer side metal is larger than or equal to the preset temperature ratio threshold value, determining that the operation monitoring of the flange middle section steam leakage of the cylinder is not qualified, and generating a steam leakage optimization improvement strategy of the nuclear power turbine;
and performing optimization control on the nuclear turbine according to the steam leakage optimization improvement strategy until the outside metal temperature ratio is smaller than a preset temperature ratio threshold value, and finishing the optimization.
7. The method of claim 6, wherein said optimizing control of said nuclear power turbine according to said steam leak optimization improvement strategy comprises:
acquiring an adjusting part of the nuclear turbine according to the steam leakage optimization improvement strategy;
and performing optimization control on the adjusting component according to the adjusting parameter of the adjusting component in the steam leakage optimization improvement strategy.
8. The utility model provides a divide face leakproofness's on-line safety monitoring device in flange of nuclear power steam turbine cylinder which characterized in that includes:
the first acquisition module is used for acquiring a monitoring temperature threshold value of the tightness of a flange median plane of a nuclear turbine cylinder;
the second acquisition module is used for acquiring the outside metal temperature of the split tightness of the flange of the cylinder;
the determining module is used for determining safe operation monitoring data of the middle section of the flange according to the monitoring temperature limit value and the outside metal temperature;
and the optimization module is used for carrying out optimization control on the nuclear turbine according to the safe operation monitoring data of the flange median plane tightness.
9. The apparatus of claim 8, wherein the first obtaining module is further configured to:
and determining the weakest part of the flange median plane tightness of the cylinder, and determining the metal temperature threshold value outside the flange median plane when the weakest part of the tightness is subjected to steam leakage as the monitoring temperature threshold value.
10. The apparatus of claim 8, wherein the second obtaining module is further configured to:
monitoring the temperature of the weakest part of the split surface tightness in the flange of the cylinder;
and monitoring the temperature of the weakest part of the tightness on line, and determining the temperature as the temperature of the outside metal.
11. The apparatus of claim 9, wherein the first obtaining module is further configured to:
acquiring design parameters of the cylinder and material performance data of the nuclear turbine;
acquiring the pressure and the thermal load of the cylinder and the pretightening force load of the bolt;
calling a three-dimensional mechanical model of the nuclear turbine;
and acquiring the outside metal temperature threshold value based on the design parameters of the cylinder, the pressure and heat load of the cylinder, the bolt pretightening force load, the material performance data and the three-dimensional mechanical model.
12. The apparatus of any of claims 9-12, wherein the determining module is further configured to:
and determining the outer metal temperature ratio of the middle section of the flange as the safe operation monitoring data according to the outer metal temperature and the monitoring temperature threshold value.
13. The apparatus of claim 8, wherein the optimization module is further configured to:
responding to the condition that the temperature ratio of the outer side metal is smaller than a preset temperature ratio threshold value, and determining that the operation monitoring of the split steam leakage in the flange of the cylinder is qualified;
responding to the condition that the temperature ratio of the outer side metal is larger than or equal to the preset temperature ratio threshold value, determining that the operation monitoring of the flange middle section steam leakage of the cylinder is not qualified, and generating a steam leakage optimization improvement strategy of the nuclear power turbine;
and performing optimization control on the nuclear turbine according to the steam leakage optimization improvement strategy until the outside metal temperature ratio is smaller than a preset temperature ratio threshold value, and finishing the optimization.
14. The apparatus of claim 13, wherein the optimization module is further configured to:
acquiring an adjusting part of the nuclear turbine according to the steam leakage optimization improvement strategy;
and performing optimization control on the adjusting component according to the adjusting parameter of the adjusting component in the steam leakage optimization improvement strategy.
15. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
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 1-7.
16. 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 1-7.
17. A computer program product comprising a computer program which, when executed by a processor, implements the method according to any one of claims 1-7.
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