CN116464628A - Method and system for evaluating hydraulic performance of important water system pump of nuclear power plant - Google Patents
Method and system for evaluating hydraulic performance of important water system pump of nuclear power plant Download PDFInfo
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Abstract
The invention relates to a method and a system for evaluating hydraulic performance of a pump of an important water system of a nuclear power station, comprising the following steps: collecting original data of a pump hydraulic characteristic test of an important water system of a nuclear power station; analyzing and calculating the original data to obtain a pump performance parameter variation analysis theoretical model of the important water system for the factory; calculating the original data to obtain pump performance evaluation criteria; evaluating daily performance changes of the pump of the water system of the important factory based on the pump performance parameter change analysis theoretical model; the pump performance deviation of the water system for the important factory is evaluated based on the pump performance evaluation standard. According to the invention, the daily performance change trend of the pump of the important water system for the factory is predicted by establishing the sea water tide level to pump performance parameter change analysis theoretical model, and meanwhile, the pump performance is evaluated by the determined pump performance evaluation standard, so that continuous monitoring and performance prediction of the pump performance are realized, and the problem that the pump performance prediction is not applicable only by adopting the pump factory test evaluation standard is solved.
Description
Technical Field
The invention relates to the technical field of water systems of nuclear power plants, in particular to a method and a system for evaluating hydraulic performance of a pump of an important water system of a nuclear power plant.
Background
The hydraulic performance of important pumps of the nuclear power plant needs to be monitored regularly to meet the safety operation requirement of the power plant, the important pumps bear the important functions of a power plant cold source, and the hydraulic characteristics (such as lift, effective cavitation margin, shaft power and efficiency) of the pumps need to be monitored through periodic tests so as to ensure that the performance of the pumps is not degraded.
The existing pump characteristic test evaluation method has the following problems:
the external environment is interfered on pump performance evaluation, and particularly the influence condition of sea water tide level on important factory water System (SEC) pump performance parameters is uncertain; the existing pump performance tracking evaluation method is built on a pump factory test evaluation standard, and is not suitable for periodic test evaluation after commercial operation.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method and a system for evaluating hydraulic performance of a pump of an important water system for a nuclear power plant.
The technical scheme adopted for solving the technical problems is as follows: the hydraulic performance evaluation method for the important water system pump of the nuclear power station is constructed and comprises the following steps:
collecting original data of a pump hydraulic characteristic test of an important water system of a nuclear power station;
analyzing and calculating the original data to obtain a pump performance parameter variation analysis theoretical model of the important water system for the factory;
calculating the original data to obtain pump performance evaluation criteria;
evaluating daily performance changes of the pump of the water system of the important factory based on the pump performance parameter change analysis theoretical model;
and evaluating the pump performance deviation of the important water system for the factory based on the pump performance evaluation standard.
In the method for evaluating the hydraulic performance of the important water system pump for the nuclear power station, the original data comprise: multiple sets of pump operation data of important water system of nuclear power plant;
each set of pump operation data includes: the connection collects one day pump operation data.
In the method for evaluating the hydraulic performance of the pump of the important water system of the nuclear power plant, the step of analyzing and calculating the original data to obtain the theoretical model for analyzing the change of the pump performance parameters of the important water system of the nuclear power plant comprises the following steps:
analyzing and calculating the operation data of each group of pumps to obtain the performance result of each group of pumps;
analyzing based on the performance results of each group of pumps to obtain the corresponding relation between the pump performance results and the sea water tide level; and the corresponding relation between the pump performance result and the sea water tide level is the pump performance parameter variation analysis theoretical model.
In the method for evaluating hydraulic performance of the pump of the important water system for the plant of the nuclear power station, the analyzing and calculating the operation data of each group of pumps, the obtaining of the performance result of each group of pumps comprises the following steps:
pump performance results were calculated once every hour, and an average of 5 minutes per hour continuous data was used to obtain the performance results for each set of pumps.
In the method for evaluating the hydraulic performance of the pump of the important water system for the nuclear power station, the corresponding relation between the pump performance result and the sea water level comprises the following steps:
the pump flow, pump inlet pressure, pump effective cavitation margin increase with increasing sea water tide level.
In the method for evaluating the hydraulic performance of the pump of the important water system for the nuclear power plant, the step of calculating the original data to obtain the pump performance evaluation standard comprises the following steps:
analyzing and calculating the operation data of each group of pumps to obtain the performance result of each group of pumps;
performing average value processing on the performance results of each group of pumps to obtain pump performance datum points;
setting a performance bias range based on the pump performance reference point; the pump performance reference point and the performance deviation range are the pump performance evaluation criteria.
In the method for evaluating hydraulic performance of the pump of the important water system for the plant of the nuclear power station, the analyzing and calculating the operation data of each group of pumps, the obtaining of the performance result of each group of pumps comprises the following steps:
calculating a pump performance result once every hour, and calculating an average value of continuous data of 5 minutes every hour to obtain a performance result of each group of pumps;
the average processing of the performance results of each group of pumps, and the obtaining of the pump performance datum point comprises the following steps:
and carrying out average value calculation on the performance results of each group of pumps to obtain the pump performance datum point.
The invention also provides a hydraulic performance evaluation system of the important water system pump of the nuclear power station, which comprises the following components:
the data acquisition unit is used for acquiring the original data of a pump hydraulic characteristic test of an important water system of the nuclear power station;
the theoretical model building unit is used for analyzing and calculating the original data to obtain a pump performance parameter change analysis theoretical model of the important water system for the factory;
an evaluation criterion determining unit for calculating the raw data to obtain a pump performance evaluation criterion;
the change trend evaluation unit is used for evaluating the daily performance change of the pump of the important water system for the factory based on the pump performance parameter change analysis theoretical model;
and the performance evaluation unit is used for evaluating the pump performance deviation of the important water system for the factory based on the pump performance evaluation standard.
The invention also provides a storage medium storing a computer program adapted to be loaded by a processor for performing the steps of the method for evaluating hydraulic performance of an important plant water system pump of a nuclear power plant as described above.
The invention also provides electronic equipment, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps of the hydraulic performance evaluation method of the important water system pump of the nuclear power plant by calling the computer program stored in the memory.
The method and the system for evaluating the hydraulic performance of the important water system pump of the nuclear power station have the following beneficial effects: comprising the following steps: collecting original data of a pump hydraulic characteristic test of an important water system of a nuclear power station; analyzing and calculating the original data to obtain a pump performance parameter variation analysis theoretical model of the important water system for the factory; calculating the original data to obtain pump performance evaluation criteria; evaluating daily performance changes of the pump of the water system of the important factory based on the pump performance parameter change analysis theoretical model; the pump performance deviation of the water system for the important factory is evaluated based on the pump performance evaluation standard. According to the invention, the daily performance change trend of the pump of the important water system for the factory is predicted by establishing the sea water tide level to pump performance parameter change analysis theoretical model, and meanwhile, the pump performance is evaluated by the determined pump performance evaluation standard, so that continuous monitoring and performance prediction of the pump performance are realized, and the problem that the pump performance prediction is not applicable only by adopting the pump factory test evaluation standard is solved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic flow chart of a method for evaluating hydraulic performance of a pump of an important water system for a nuclear power plant, which is provided by the embodiment of the invention;
fig. 2 is a schematic diagram of a relationship between inlet pressure of a 1SEC003PO pump and sea water tide level according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the correspondence between the inlet pressure of the 6SEC002PO pump and the sea water tide level according to the embodiment of the present invention;
fig. 4 is a graph of the flow rate of the 1SEC003PO pump according to the embodiment of the invention, versus sea water level;
FIG. 5 is a graph showing the flow rate of the 6SEC002PO pump according to the embodiment of the present invention in relation to sea water level;
fig. 6 is a graph showing a one-day trend of the effective cavitation margin of the 1SEC003PO pump according to the embodiment of the present invention;
FIG. 7 is a graph showing the trend of the effective cavitation margin of the 6SEC002PO pump provided in the example of the present invention over one day;
fig. 8 is a graph showing a one-day trend of various performances of the 1SEC003PO pump corrected to outgoing line comparison pump provided by the embodiment of the present invention;
fig. 9 is a graph showing a one-day trend of various performances of the 6SEC002PO pump corrected to outgoing line comparison pump provided by the embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the invention provides a method for evaluating hydraulic performance of a pump of an important water system for a nuclear power plant.
Specifically, as shown in fig. 1, the hydraulic performance evaluation method for the important water system pump of the nuclear power station comprises the following steps:
and S10, collecting original data of a pump hydraulic characteristic test of an important plant water system of the nuclear power station.
Optionally, in an embodiment of the present invention, the collected raw data of the pump hydraulic characteristic test includes: multiple sets of pump operation data of important water system of nuclear power plant; wherein each set of pump operation data comprises: the connection collects one day pump operation data.
Further, the pump operation data includes data for a plurality of parameters, which may include: pump inlet pressure data, pump outlet pressure data, pump flow data, pump speed data, motor current data, motor voltage data, etc. Thus, each set of pump operating data includes data for a plurality of parameters, namely: pump inlet pressure data, pump outlet pressure data, pump flow data, pump speed data, motor current data, motor voltage data, etc. Wherein the data for each parameter includes a plurality of sets of data.
And S20, analyzing and calculating the original data to obtain a pump performance parameter variation analysis theoretical model of the important water system for the factory.
In the embodiment of the present invention, the analyzing and calculating the raw data to obtain the pump performance parameter variation analysis theoretical model of the important water system for the factory includes: analyzing and calculating the operation data of each group of pumps to obtain the performance result of each group of pumps; analyzing based on the performance results of each group of pumps to obtain the corresponding relation between the pump performance results and the sea water tide level; and the corresponding relation between the pump performance result and the sea water tide level is the pump performance parameter variation analysis theoretical model.
Wherein the analyzing and calculating the pump operation data of each group, and obtaining the performance result of each group of pumps comprises: pump performance results were calculated once every hour, and an average of 5 minutes per hour continuous data was used to obtain the performance results for each set of pumps.
Specifically, by continuously collecting pump operation data for 1 day, calculating a pump performance result once every hour, collecting 24 sets of data for 1 day, and analyzing and calculating each set of data to obtain a performance result of each set of pump, wherein the performance result of the pump comprises: pump head, pump shaft power, pump efficiency, pump effective cavitation margin, etc. Among the 24 sets of data are: pump inlet pressure data, pump outlet pressure data, pump flow data, pump speed data, motor current data, motor voltage data.
Wherein pump performance results were calculated once every hour interval, using an average of 5 minutes per hour of continuous data. For example, by describing the pump inlet pressure, once data is collected at 1 pm, the pump inlet pressure of 1 to 1 zero is continuously collected for 5 minutes, and the collected multiple pump inlet pressure data are averaged, and the average value is calculated as the pump performance result.
Specifically, the centrifugal pump is generally driven by a motor, the shell is required to be filled with the conveyed liquid before the centrifugal pump is started, after the motor is started, the shaft of the pump drives the impeller to rotate together, the liquid filled between the blades also rotates along with the rotation, and under the action of centrifugal force, the liquid obtains energy from the center of the impeller by the process of heating the outer edge, so that the hydrostatic pressure of the outer edge of the impeller is improved, and meanwhile, the flow rate is also increased.
Wherein, the pump head: i.e. the increase in energy per unit weight of liquid passing through the pump, expressed as H, in m, can be calculated by the formula:
(1) Wherein H represents the lift; z is Z 1 Representing the height of a medium pressure measuring point at the inlet of the pump; z is Z 2 Representing the height of a medium pressure measuring point at the outlet of the pump; v (V) 1 Representing pump inlet medium velocity; v (V) 2 Representing pump outlet medium velocity; g represents gravitational acceleration; p (P) 1 Representing pump inlet medium pressure; p (P) 2 Representing pump outlet medium pressure; ρ represents the medium density.
Effective cavitation margin of pump: i.e. the pump has a margin of excess vaporization force per unit weight of fluid at the suction inlet, i.e. NPSH aw It can be calculated by the following formula:
(2) In the formula, NPSH aw Indicating the effective cavitation margin; p represents the pump medium pressure; ρ represents the medium density; g represents gravitational acceleration; p (P) s Representing the corresponding saturated water pressure at the temperature of the pump medium; v represents the pump medium flow rate.
And after the performance result of the pump is obtained by analyzing and calculating the data of one day, the corresponding relation between the performance result of the pump and the sea water tide level can be established by combining the sea water tide level. Wherein, the corresponding relation between the pump performance result and the sea water tide level comprises: the corresponding relation between the pump inlet pressure and the sea water level, the corresponding relation between the pump flow and the sea water level, and the corresponding relation between the pump effective cavitation allowance and the sea water level.
Further, in order to ensure accuracy of the data, the data of each pump day in a period of time may be analyzed and calculated, for example, the data of each pump day in one month may be collected, then the data collected each day is analyzed and calculated according to the above method, so as to obtain a pump performance result of each day, and then the result of the pump performance result of each day is obtained by performing a finishing analysis in combination with the sea water tide level condition of each day: the lift deviation, the shaft power deviation and the efficiency deviation are irrelevant to the sea water tide level after the outgoing line is corrected, and the sea water tide level directly influences the inlet pressure and the pump flow.
Optionally, in an embodiment of the present invention, the correspondence between the pump performance result and the sea water level includes: the pump flow, pump inlet pressure, pump effective cavitation margin increase with increasing sea water tide level. Specifically, the corresponding relation between the pump flow and the sea water tide level is as follows: the pump flow increases with the sea level; the corresponding relation between the inlet pressure of the pump and the sea water tide level is as follows: the pump inlet pressure increases with increasing sea level; the corresponding relation between the effective cavitation allowance of the pump and the sea water tide level is as follows: the pump effective cavitation margin increases with increasing sea water tide level. I.e. when the sea water tide level increases, the pump flow, the pump inlet pressure and the pump effective cavitation margin synchronously increase.
In order to verify the reliability of the correspondence, specific measured data are used to verify, as shown in fig. 2 to 7, a schematic diagram of the correspondence between the measured inlet pressure and the sea water level and a schematic diagram of the correspondence between the measured flow and the sea water level of the 1SEC003PO pump and the 6SEC002PO pump are respectively given, and as can be seen from fig. 2 to 7, the inlet pressure, the flow, and the pump effective cavitation margin increase with the increase of the sea water level.
Further, in the embodiment of the invention, when the performance result of the pump is calculated, the sea water tide level can be corrected, whether the flow of the pump is consistent is compared after the sea water tide level is corrected, if the flow is the same, the measurement of the pump flow is accurate, and if the difference of the pump flow is large after the sea water tide level is corrected, the deviation of the flow measurement is indicated, and the flow measurement instrument is required to be checked. By the method, whether the pump flow measuring instrument deviates or not can be judged in an auxiliary mode, other factors affecting the pump hydraulic performance evaluation are eliminated conveniently, and the pump characteristic test evaluation accuracy is improved.
Based on the analysis, the influence mechanism of the sea water tide level on various parameters and performances of the pump can be obtained, namely: the sea water tide level rises, the inlet pressure of an important factory water System (SEC) pump synchronously rises, the effective cavitation allowance of the pump increases, the pump outlet pressure increases, but the pump lift, the shaft power and the efficiency remain unchanged after the pump outlet pressure is corrected to the same rotating speed. The trend of each performance of the pump after the factory curve is corrected is shown in fig. 8 and 9.
And step S30, calculating the original data to obtain pump performance evaluation criteria.
In the embodiment of the present invention, the calculating the raw data to obtain the pump performance evaluation criteria includes: analyzing and calculating the operation data of each group of pumps to obtain the performance result of each group of pumps; performing average value processing on the performance results of each group of pumps to obtain pump performance datum points; a performance bias range is set based on the pump performance reference point. Wherein the pump performance reference point and the performance deviation range are the pump performance evaluation criteria.
Specifically, the analyzing and calculating the operation data of each set of pumps to obtain the performance result of each set of pumps includes: pump performance results were calculated once every hour, and an average of 5 minutes per hour continuous data was used to obtain the performance results for each set of pumps. It should be noted that the performance result of each set of pumps is the same as the calculation method in step S20.
In the embodiment of the present invention, the average processing of the performance results of each set of pumps to obtain the pump performance reference points includes: and carrying out average value calculation on the performance results of each group of pumps to obtain the pump performance datum point.
Specifically, as described above, taking 1 day of pump operation data collection as an example, 24 sets of data are collected in total in 1 day, and then 24 sets of pump performance results are obtained in total, that is, the pump head of 24 pumps, the shaft power of 24 pumps, the efficiency of 24 pumps, and the effective cavitation margin of 24 pumps are respectively obtained. Taking the pump lift as an example for explanation, summing the data of the pump lifts of 24 pumps, and dividing the data by 24 to obtain an average value of the pump lifts, wherein the average value of the pump lifts is the reference point of the pump lifts. Similarly, reference points (a pump efficiency reference point, a pump shaft power reference point, and a pump effective cavitation allowance reference point) of other parameters can be obtained respectively, and then deviation ranges (i.e., an upper limit value and a lower limit value) corresponding to the parameters are set correspondingly respectively, so that evaluation standards of the parameters, namely, a lift evaluation standard, an efficiency evaluation standard, a shaft power evaluation standard and an effective cavitation allowance evaluation standard can be obtained.
And step S40, evaluating daily performance change of the pump of the important water system for the factory based on the pump performance parameter change analysis theoretical model.
Specifically, after the corresponding relationship between the pump inlet pressure and the sea water level and the corresponding relationship between the pump flow and the sea water level are obtained in step S20, the change condition of the inlet pressure and the flow in one day of the pump can be predicted and judged according to the corresponding relationship between the pump inlet pressure and the sea water level and the corresponding relationship between the pump flow and the sea water level.
And S50, evaluating the pump performance deviation of the important water system for the factory based on the pump performance evaluation standard.
Specifically, after the evaluation criteria for each parameter are obtained in step S40, the pump performance deviation can be evaluated based on the obtained evaluation criteria for each parameter. For example, taking the pump lift as an example, if the deviation between the actual lift and the reference point of the lift is not in the deviation range, the pump is judged to be unreliable, at this time, a corresponding early warning can be given, and if the deviation between the actual lift and the reference point of the lift is in the deviation range, the pump is judged to be reliable.
The invention uses average value to process collected data, effectively solves the problem of pump performance fluctuation in different time periods, obtains the influence mechanism and relevant factors of sea water tide level on each parameter and performance of the pump through analysis and calculation, establishes SEC pump performance datum point, and optimizes SEC pump performance evaluation method.
In addition, because the SEC pump characteristic test period is frequent and the workload is large, the evaluation method based on the invention can reduce the workload of frequent analysis and evaluation of related personnel and greatly reduce the labor input cost.
According to the invention, the performance parameter change analysis theoretical model of the SEC pump is established by the sea water tide level, so that the daily performance change trend of the SEC pump is successfully predicted. The pump performance datum point is evaluated in combination with the deviation range, so that the pump performance deviation can be accurately evaluated, the accuracy of the hydraulic characteristic test result of the important pump of the nuclear power station is improved, and the continuous monitoring and performance prediction capability of the important pump of the nuclear power station are further improved.
The invention also provides a hydraulic performance evaluation system of the important water system pump of the nuclear power station, which comprises the following components:
the data acquisition unit is used for acquiring the original data of the pump hydraulic characteristic test of the important water system of the nuclear power station.
And the theoretical model building unit is used for analyzing and calculating the original data to obtain a pump performance parameter change analysis theoretical model of the important water system for the factory.
And the evaluation standard determining unit is used for calculating the original data to obtain the pump performance evaluation standard.
And the change trend evaluation unit is used for evaluating the daily performance change of the important water system pump for the factory based on the pump performance parameter change analysis theoretical model.
And the performance evaluation unit is used for evaluating the pump performance deviation of the important water system for the factory based on the pump performance evaluation standard.
Specifically, the specific cooperation operation process between each unit in the hydraulic performance evaluation system of the important water system of the nuclear power plant can be specifically referred to the hydraulic performance evaluation method of the important water system of the nuclear power plant, and will not be described herein.
In addition, the electronic equipment comprises a memory and a processor; the memory is used for storing a computer program; the processor is used for executing a computer program to realize the hydraulic performance evaluation method of the important water system pump of the nuclear power station. In particular, according to embodiments of the present invention, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may perform the above-described functions defined in the methods of embodiments of the present invention when downloaded and installed and executed by an electronic device. The electronic equipment in the invention can be a terminal such as a notebook, a desktop, a tablet computer, a smart phone and the like, and also can be a server.
In addition, a storage medium of the present invention has stored thereon a computer program which, when executed by a processor, implements the hydraulic performance evaluation method of the important plant water system pump of a nuclear power plant of any one of the above. In particular, it should be noted that the storage medium of the present invention may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, fiber optic cables, RF (radio frequency), and the like, or any suitable combination of the foregoing.
The computer readable medium may be contained in the electronic device; or may exist alone without being incorporated into the electronic device.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same according to the content of the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made with the scope of the claims should be covered by the claims.
Claims (10)
1. The hydraulic performance evaluation method for the important water system pump of the nuclear power station is characterized by comprising the following steps of:
collecting original data of a pump hydraulic characteristic test of an important water system of a nuclear power station;
analyzing and calculating the original data to obtain a pump performance parameter variation analysis theoretical model of the important water system for the factory;
calculating the original data to obtain pump performance evaluation criteria;
evaluating daily performance changes of the pump of the water system of the important factory based on the pump performance parameter change analysis theoretical model;
and evaluating the pump performance deviation of the important water system for the factory based on the pump performance evaluation standard.
2. The method for evaluating hydraulic performance of a pump of a water system for nuclear power plant according to claim 1, wherein the raw data includes: multiple sets of pump operation data of important water system of nuclear power plant;
each set of pump operation data includes: the connection collects one day pump operation data.
3. The method for evaluating hydraulic performance of a pump of an important water system for a plant according to claim 2, wherein the analyzing and calculating the raw data to obtain a theoretical model of variation analysis of pump performance parameters of the important water system for the plant comprises:
analyzing and calculating the operation data of each group of pumps to obtain the performance result of each group of pumps;
analyzing based on the performance results of each group of pumps to obtain the corresponding relation between the pump performance results and the sea water tide level; and the corresponding relation between the pump performance result and the sea water tide level is the pump performance parameter variation analysis theoretical model.
4. A method of evaluating hydraulic performance of a pump of a critical service water system for a nuclear power plant as claimed in claim 3, wherein said analyzing and calculating each set of pump operation data to obtain performance results of each set of pumps comprises:
pump performance results were calculated once every hour, and an average of 5 minutes per hour continuous data was used to obtain the performance results for each set of pumps.
5. The method for evaluating hydraulic performance of a pump of an important plant water system for a nuclear power plant according to claim 3, wherein the correspondence between the pump performance result and the sea water level comprises:
the pump flow, pump inlet pressure, pump effective cavitation margin increase with increasing sea water tide level.
6. The method for evaluating hydraulic performance of a pump of a water system for important plants for nuclear power plants according to claim 2, wherein the calculating the raw data to obtain the pump performance evaluation criteria comprises:
analyzing and calculating the operation data of each group of pumps to obtain the performance result of each group of pumps;
performing average value processing on the performance results of each group of pumps to obtain pump performance datum points;
setting a performance bias range based on the pump performance reference point; the pump performance reference point and the performance deviation range are the pump performance evaluation criteria.
7. The method for evaluating hydraulic performance of a pump in a water system for nuclear power plant as claimed in claim 6, wherein said analyzing and calculating each set of pump operation data to obtain the performance result of each set of pumps comprises:
calculating a pump performance result once every hour, and calculating an average value of continuous data of 5 minutes every hour to obtain a performance result of each group of pumps;
the average processing of the performance results of each group of pumps, and the obtaining of the pump performance datum point comprises the following steps:
and carrying out average value calculation on the performance results of each group of pumps to obtain the pump performance datum point.
8. An important water system pump hydraulic performance evaluation system for a nuclear power plant, which is characterized by comprising:
the data acquisition unit is used for acquiring the original data of a pump hydraulic characteristic test of an important water system of the nuclear power station;
the theoretical model building unit is used for analyzing and calculating the original data to obtain a pump performance parameter change analysis theoretical model of the important water system for the factory;
an evaluation criterion determining unit for calculating the raw data to obtain a pump performance evaluation criterion;
the change trend evaluation unit is used for evaluating the daily performance change of the pump of the important water system for the factory based on the pump performance parameter change analysis theoretical model;
and the performance evaluation unit is used for evaluating the pump performance deviation of the important water system for the factory based on the pump performance evaluation standard.
9. A storage medium storing a computer program adapted to be loaded by a processor for performing the steps of the method for evaluating hydraulic performance of a pump of an important plant water system of a nuclear power plant as claimed in any one of claims 1 to 7.
10. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps of the important plant water system pump hydraulic performance evaluation method of the nuclear power plant according to any one of claims 1 to 7 by calling the computer program stored in the memory.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117436356A (en) * | 2023-12-21 | 2024-01-23 | 上海凯士比泵有限公司 | Method, apparatus and storage medium for evaluating performance of pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117436356A (en) * | 2023-12-21 | 2024-01-23 | 上海凯士比泵有限公司 | Method, apparatus and storage medium for evaluating performance of pump |
| CN117436356B (en) * | 2023-12-21 | 2024-03-05 | 上海凯士比泵有限公司 | Method, apparatus and storage medium for evaluating performance of pump |
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