Power station water pump vibration diagnosis analysis processing method and device based on analytic hierarchy process
The method of vibration diagnosis and analysis of power station water pump vibration is constructed through the hierarchical analysis method, which solves the complex diagnosis problem of vibration of power station water pump vibration, reduces trial and error costs and personnel requirements, improves processing efficiency, and provides a scientific solution.
Patent Information
- Application Number
- CN202411343387.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2024-12-27
AI Technical Summary
The vibration problems of power station water pumps are complex and difficult to diagnose. The existing technology relies on vibration spectrum analysis, resulting in engineers having rich experience and high trial and error costs.
The vibration diagnosis and analysis treatment method of power station water pumps is constructed based on the hierarchical analysis method. By constructing a three-layer structural model, relevant parameters are obtained, the cause of vibration and the weight of the disposal plan are calculated, and the main and preferred plans are sorted out.
It reduces the trial and error cost and personnel experience requirements of vibration treatment, improves processing efficiency, and provides a scientific vibration treatment plan.
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Figure CN119202799A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of vibration diagnosis of power station water pumps, and in particular relates to a method and device for diagnosing and analyzing vibration of power station water pumps based on a hierarchy analysis method. Background Art
[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.
[0003] Water pump equipment is a very important auxiliary equipment for power stations. Water pumps play a very important role in power stations. For example, water feed pumps, circulating water pumps and other equipment are the core equipment for power station operation. Once a problem occurs, the unit will reduce load or even stop operating. Therefore, the quality and technical level of water pumps directly affect the overall quality and technical level of the generator set. Among them, vibration problems, as the most common and difficult problem to solve on site, have always plagued the smooth progress of the project. At present, during the commissioning and operation of power station water pumps, vibration spectrum is generally used to analyze the cause of vibration and diagnose and deal with vibration problems of water pumps.
[0004] However, there are many factors that cause pump vibration, and the vibration spectrum cannot directly reflect the cause of vibration. At the same time, there is no unique solution to the cause of vibration. Therefore, the requirements for pump vibration treatment engineers are extremely high, and they need to have rich experience in diagnosis and treatment plan formulation. This has brought great difficulties to the vibration treatment of power station pumps and generated a lot of sunk costs of trial and error. Summary of the invention
[0005] In order to solve the above technical problems, the present invention provides a method and device for diagnosing and analyzing the vibration of a power station water pump based on the analytic hierarchy process. The analytic hierarchy process is used to perform index evaluation and weight allocation, and normalize the relevant indicators to formulate a suitable processing plan for easy promotion and implementation, so as to reduce the trial and error cost of handling vibration problems and the experience requirements of the processing personnel.
[0006] In order to achieve the above object, the present invention adopts the following technical solution:
[0007] A first aspect of the present invention provides a method for diagnosing and analyzing vibration of a power station water pump based on the analytic hierarchy process.
[0008] In one or more embodiments, a method for diagnosing and analyzing vibration of a power station pump based on a hierarchical analysis method is provided, comprising:
[0009] A hierarchical model for handling vibration problems of power station pumps is pre-built, which consists of three layers: the first layer is the main cause of vibration; the second layer is the cause of vibration; the third layer is the vibration handling plan;
[0010] Acquire the power station water pump vibration related parameters and construct the judgment matrix of two adjacent layers in combination with the hierarchical structure model for handling the power station water pump vibration problem;
[0011] The judgment matrices of two adjacent layers are checked for consistency. If they pass the consistency check, the weight of the vibration cause and the weight of the vibration treatment plan are calculated using the hierarchical analysis method.
[0012] According to the weight of the vibration cause and the weight of the vibration treatment plan, the vibration causes and the vibration treatment plan are sorted from large to small and output.
[0013] As an implementation method, in the process of consistency checking the judgment matrices of two adjacent layers, a consistency check method is used to verify the judgment matrices of the two adjacent layers, and a consistency ratio is obtained and compared with a preset consistency threshold; when the consistency ratio is less than the consistency threshold, the current judgment matrix is a suitable judgment matrix, otherwise the judgment matrix is reconstructed until a suitable judgment matrix is obtained.
[0014] As an implementation method, the process of calculating the weight of the vibration cause using the hierarchical analysis method is as follows:
[0015] The eigenvalues of the judgment matrices of the first and second layers are calculated as the weights of each vibration cause.
[0016] As an implementation method, the process of calculating the weight of the vibration treatment plan using the hierarchical analysis method is as follows:
[0017] The eigenvalues of the judgment matrices of two adjacent layers are calculated, and then the eigenvalues of the judgment matrices of the two adjacent layers corresponding to each vibration treatment scheme are multiplied and summed to obtain the weight of each vibration treatment scheme.
[0018] As an implementation manner, the weight of the vibration cause is compared with a first weight threshold, and the vibration cause with a weight greater than the first weight threshold is regarded as a main cause, and the vibration cause with a weight less than or equal to the first weight threshold is regarded as a general cause.
[0019] As an implementation mode, the weight of the vibration treatment scheme is compared with a second weight threshold and a third weight threshold respectively, wherein the second weight threshold is less than the third weight threshold;
[0020] considering a vibration treatment plan with a weight greater than or equal to a third weight threshold as a recommended plan;
[0021] Considering the vibration treatment scheme whose weight is less than the third weight threshold and greater than or equal to the second weight threshold as an optional scheme;
[0022] The vibration handling solutions whose weights are less than the second weight threshold are considered as alternative solutions.
[0023] A second aspect of the present invention provides a power station water pump vibration diagnosis and analysis processing device based on the analytic hierarchy process.
[0024] In one or more embodiments, a power station pump vibration diagnosis and analysis processing device based on the analytic hierarchy process includes:
[0025] A hierarchical model building module is used to pre-build a hierarchical model for handling vibration problems of power station pumps. The model consists of three layers: the first layer is the main cause of vibration; the second layer is the cause of vibration; and the third layer is the vibration handling plan.
[0026] A judgment matrix construction module, which is used to obtain parameters related to the vibration of a power station water pump and construct a judgment matrix of two adjacent layers in combination with a hierarchical structure model for handling the vibration problem of the power station water pump;
[0027] A hierarchical analysis calculation module is used to perform consistency check on the judgment matrices of two adjacent layers. If both pass the consistency check, the weight of the vibration cause and the weight of the vibration treatment plan are calculated using the hierarchical analysis method;
[0028] The vibration diagnosis and analysis processing module is used to sort and output the vibration causes and vibration treatment solutions from large to small according to the weights of the vibration causes and the weights of the vibration treatment solutions.
[0029] As an implementation mode, in the judgment matrix construction module, in the process of performing consistency check on the judgment matrices of two adjacent layers, a consistency check method is used to verify the judgment matrices of the two adjacent layers, and a consistency ratio is obtained and compared with a preset consistency threshold; when the consistency ratio is less than the consistency threshold, the current judgment matrix is a suitable judgment matrix, otherwise the judgment matrix is reconstructed until a suitable judgment matrix is obtained.
[0030] A third aspect of the present invention provides a computer-readable storage medium.
[0031] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for diagnosing and analyzing vibration of a power station water pump based on the analytic hierarchy process.
[0032] A fourth aspect of the present invention provides an electronic device.
[0033] An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps in the above-mentioned method for diagnosing and analyzing vibration of a power station water pump based on the hierarchical analysis method are implemented.
[0034] Compared with the prior art, the present invention has the following beneficial effects:
[0035] The present invention adopts the three-layer structure of main vibration causes, vibration causes and vibration treatment solutions to construct a hierarchical model for handling the vibration problem of power station water pumps, and then uses the hierarchical analysis method to calculate the weights of the vibration causes and the weights of the vibration treatment solutions. Finally, the main vibration causes and their preferred vibration treatment solutions are determined, and the selection of vibration treatment solutions is realized through mathematical modeling and calculation. The process is fixed and easy to promote and implement. Through this method, complex vibration data is standardized and a reasonable vibration treatment solution is given, which is conducive to reducing the requirements for vibration processing personnel and the trial and error cost, and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.
[0037] Figure 1 It is a flow chart of a method for diagnosing and analyzing vibration of a power station pump based on the analytic hierarchy process according to an embodiment of the present invention;
[0038] Figure 2 It is a hierarchical structure model for handling the vibration problem of a power station water pump according to an embodiment of the present invention;
[0039] Figure 3 This is a schematic diagram of the measurement points of a vertical water pump vibration problem;
[0040] Figure 4 This is the horizontal vibration spectrum of the non-driving end of the motor at measuring point 1 of a vertical water pump;
[0041] Figure 5 It is the horizontal natural frequency spectrum of the non-driving end of a vertical water pump motor;
[0042] Figure 6 It is a flow chart for the implementation of power station pump vibration diagnosis analysis and processing based on the analytic hierarchy process;
[0043] Figure 7 It is a schematic diagram of the structure of a power station water pump vibration diagnosis and analysis processing device based on the analytic hierarchy process according to an embodiment of the present invention;
[0044] Figure 8 is a schematic diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION
[0045] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0046] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0048] Figure 1 FIG. 1 is a flow chart of a method for diagnosing and analyzing vibration of a power station pump based on the analytic hierarchy process in an embodiment of the present invention. Figure 1 The power station pump vibration diagnosis and analysis processing method based on the hierarchical analysis method in the present embodiment shown may include:
[0049] S101, pre-constructing a hierarchical model for handling vibration problems of power station water pumps, which consists of a three-layer structure, the first layer is the main cause of vibration; the second layer is the cause of vibration; the third layer is the vibration handling plan;
[0050] S102, obtaining power station water pump vibration related parameters and combining the hierarchical structure model for handling the power station water pump vibration problem to construct a judgment matrix of two adjacent layers;
[0051] S103, performing consistency check on the judgment matrices of two adjacent layers, and if both pass the consistency check, using the hierarchical analysis method to calculate the weight of the vibration cause and the weight of the vibration treatment plan;
[0052] S104, according to the weights of the vibration causes and the weights of the vibration treatment solutions, the vibration causes and the vibration treatment solutions are sorted from large to small and output.
[0053] Arrange the weights corresponding to the vibration causes in order of magnitude. The larger the weight, the more likely it is to be the main cause of the vibration. According to the range of weights, classify each vibration cause into multiple categories according to importance.
[0054] The vibration causes corresponding to each vibration treatment plan are divided into multiple categories according to the correlation evaluation, and classified according to the weight of the vibration cause and the correlation level of the vibration treatment plan.
[0055] In this embodiment, the vibration problem of the power station water pump is handled by adopting a three-layer structure of the main cause of vibration, the cause of vibration and the vibration treatment plan to construct a hierarchical model, and then the weight of the vibration cause and the weight of the vibration treatment plan are calculated in combination with the hierarchical analysis method. Finally, the main cause of vibration and its preferred vibration treatment plan are determined, and the selection of vibration treatment plan is realized through mathematical modeling and calculation. The process is fixed and easy to promote and implement. Through this method, complex vibration data is standardized and a reasonable vibration treatment plan is given, which is conducive to reducing the requirements for vibration processing personnel and the trial and error cost, and improving the processing efficiency.
[0056] Among rotating machinery problems, vibration problems are complex problems affected by multiple factors, and the analytic hierarchy process is a multi-objective decision analysis method that hierarchically decomposes complex decision problems into multiple levels, thereby making more scientific comparisons and judgments. It is widely used in various fields such as engineering and management. Therefore, the analytic hierarchy process can effectively improve the scientific nature of the selection of vibration problem treatment solutions.
[0057] To this end, this application proposes a water pump vibration diagnosis and analysis processing method based on hierarchical analysis method, combined with Figure 1 and Figure 6 , based on the principle of solving the most suitable sequence of recommended solutions for the root causes of vibration, the scientific selection of vibration treatment solutions is achieved by establishing a hierarchical model and constructing a judgment matrix.
[0058] Taking the vibration problem of a vertical water pump in a power project as an example, the specific implementation plan of the water pump vibration diagnosis and analysis processing device based on the hierarchical analysis method is given below. Figure 3 The vibration problem measurement points of a vertical water pump are given, namely measurement points 1 to 4. The test structure is shown in Figure 1.
[0059] Table 1 Vibration test results of a vertical water pump
[0060]
[0061] According to the test results, the horizontal vibration of the non-driving end of the motor at measuring point 1 exceeds the standard, with a vibration value of 18.9 mm / s, exceeding the allowable value of 4.5 mm / s. Figure 4 As shown, and verify the natural frequency, such as Figure 5 shown.
[0062] The implementation plan is based on the principle of meeting the actual needs of the main causes of vibration, which is also consistent with the actual situation of the project. For the vibration exceeding the standard problem shown in Table 1, the vibration spectrum and natural frequency spectrum are analyzed to determine the influence weight of the vibration cause.
[0063] In the specific implementation process, the first layer in the hierarchical model of step S101, that is, analyzing the root cause of vibration, is to determine the main vibration cause that causes vibration. The main vibration cause can be decomposed into the contribution of each vibration cause, that is, the second layer in the hierarchical model. The third layer of the hierarchical model is the specific correspondence between the vibration cause and the vibration data information.
[0064] Table 2 shows the correspondence between some vibration causes in the database and the vibration data information such as spectrum, natural frequency, amplitude, vibration direction, etc. Table 3 shows the correspondence between some treatment plans and vibration causes in the database:
[0065] Table 2 Correspondence between some vibration causes and vibration data information
[0066]
[0067] Table 3 Correspondence between some treatment plans and vibration causes
[0068]
[0069] according to Figure 2 The given hierarchical model is combined with the corresponding relationship in Table 2 to construct a hierarchical model of the vibration problem of a vertical water pump in Table 1.
[0070] In step S102, the power station water pump vibration related parameters include vibration related data information such as the vibration peak size of each frequency of the vibration spectrum that affects the cause of pump vibration, each vibration peak frequency, the spectrum width of the vibration peak, the vibration phase, the number of rotor blades, the natural frequency, etc.
[0071] The judgment matrix of the first and second layers is as follows:
[0072]
[0073] Among them, A ij In terms of vibration contribution, the vibration cause A i Cause of vibration A j The numerical expression of relative importance and its meaning are shown in Table 4.
[0074] Table 4 Numerical calibration of importance between elements
[0075]
[0076] For the vibration problem of a vertical water pump in Table 1, Figure 3 and Figure 4It can be seen that its rotation frequency is 50Hz (one-fold frequency) and the first-order natural frequency is 47Hz. Combining the constructed hierarchical model of a vertical water pump vibration problem and the database evaluation score, the judgment matrix between the first and second layers is as follows:
[0077]
[0078] for Figure 2 For the hierarchical model shown in Figure 1, the judgment matrices of the second and third layers are as follows:
[0079]
[0080] Among them, B ij Indicates that for vibration cause A, vibration treatment plan B i Vibration treatment plan B j The numerical expression of relative importance and its meaning are also shown in Table 4.
[0081] For different vibration causes, according to the corresponding relationship of the treatment plans shown in Table 3, combined with the constructed hierarchical model and database evaluation scoring, the judgment matrix between the second and third layers is as follows:
[0082]
[0083] In step S103, in the process of consistency check of the judgment matrices of two adjacent layers, the consistency check method is used to verify the judgment matrices of the two adjacent layers, and the consistency ratio is obtained and compared with the preset consistency threshold; when the consistency ratio is less than the consistency threshold, the current judgment matrix is a suitable judgment matrix, otherwise the judgment matrix is reconstructed until a suitable judgment matrix is obtained.
[0084] For example, the maximum eigenvalue λ of the judgment matrix of the first and second layers is obtained by using the Python software numpy module max is 4.0435, and the consistency ratio of the above judgment matrix is calculated.
[0085]
[0086] Among them, RI is the average random consistency index, CI is the consistency index, and λ max is the maximum eigenvalue of the judgment matrix, and n is the dimension of the judgment matrix.
[0087] According to formula (1), it can be judged that the judgment matrix has satisfactory consistency.
[0088] In the specific implementation process, the process of calculating the weight of vibration causes using the hierarchical analysis method is as follows:
[0089] The eigenvalues of the judgment matrices of the first and second layers are calculated as the weights of each vibration cause.
[0090] The process of calculating the weight of vibration treatment scheme using analytic hierarchy process is as follows:
[0091] The eigenvalues of the judgment matrices of two adjacent layers are calculated, and then the eigenvalues of the judgment matrices of the two adjacent layers corresponding to each vibration treatment scheme are multiplied and summed to obtain the weight of each vibration treatment scheme.
[0092] The total ranking results of the weights of the treatment plans for the vibration problem of a vertical water pump are shown in Table 5.
[0093] Table 5 Total weight ranking of vibration treatment solutions
[0094]
[0095] Among them, 0.2495 corresponding to the original mass imbalance, 0.0955 corresponding to the foundation looseness, 0.5596 corresponding to the resonance, and 0.0955 corresponding to the magnetic field imbalance are the eigenvalues obtained through the above judgment matrix. The weight of each interface is obtained by multiplying and summing. For example, the calculation process of adding the weight of the balancing block solution is:
[0096] 0.2495*0.6667+0.0955*0+0.5596*0+0.0955*0=0.166342
[0097] In one or more embodiments, in step S104, the weight of the vibration cause is compared with a first weight threshold, and the vibration cause with a weight greater than the first weight threshold is regarded as a main cause, and the vibration cause with a weight less than or equal to the first weight threshold is regarded as a general cause.
[0098] Comparing the weight of the vibration treatment scheme with a second weight threshold and a third weight threshold respectively, wherein the second weight threshold is less than the third weight threshold;
[0099] considering a vibration treatment plan with a weight greater than or equal to a third weight threshold as a recommended plan;
[0100] Considering the vibration treatment scheme whose weight is less than the third weight threshold and greater than or equal to the second weight threshold as an optional scheme;
[0101] The vibration handling solutions whose weights are less than the second weight threshold are considered as alternative solutions.
[0102] For example, the third weight threshold is set to 2 / N, and the second weight threshold is set to 1 / N.
[0103] Therefore, for the vibration treatment schemes with weights greater than or equal to 2 / N obtained according to the above analytic hierarchy process, they are classified as recommended schemes; the vibration treatment schemes with weights less than 2 / N but greater than or equal to 1 / N are classified as optional schemes; the vibration treatment schemes with weights less than 1 / N are classified as alternative schemes, where N represents the total number of vibration treatment schemes with weight values. The weights of the vibration treatment schemes in Table 5 are normalized, and then selected according to the above classification principle based on the processed weights, and the results are shown in Table 6.
[0104] Table 6 Recommended selection of vibration treatment solutions
[0105] Disposal plan Weight Classification Add balance weight 0.166342 Options Rotor factory correction 0.083158 Alternatives Tighten the base bolts 0.06367 Alternatives Re-grouting 0.03183 Alternatives Add support 0.373085 Recommended Solution Add reinforcement 0.186515 Options Adjusting the motor 0.0955 Alternatives
[0106] According to the recommended solution in Table 6, the recommended solution was implemented and external support was added to the non-drive end of the motor. The final vibration data is shown in Table 7.
[0107] Table 7 Final vibration data
[0108]
[0109]
[0110] Figure 7 Schematic diagram of a power station pump vibration diagnosis and analysis processing device based on the hierarchical analysis method in the embodiment of the present invention. Figure 7 The power station pump vibration diagnosis analysis and processing method based on the hierarchical analysis method corresponds to Figure 7 As shown, the power station pump vibration diagnosis and analysis processing device based on the hierarchical analysis method in this embodiment may include:
[0111] The hierarchical structure model building module 701 is used to pre-build a hierarchical structure model for handling the vibration problem of the power station water pump, which consists of a three-layer structure, the first layer is the main cause of the vibration; the second layer is the cause of the vibration; the third layer is the vibration handling plan;
[0112] A judgment matrix construction module 702 is used to obtain parameters related to the vibration of a power station water pump and to construct a judgment matrix of two adjacent layers in combination with the hierarchical structure model for handling the vibration problem of the power station water pump;
[0113] A hierarchical analysis calculation module 703 is used to perform consistency check on the judgment matrices of two adjacent layers. If both pass the consistency check, the weight of the vibration cause and the weight of the vibration treatment plan are calculated using the hierarchical analysis method;
[0114] The vibration diagnosis and analysis processing module 704 is used to sort the vibration causes and the vibration treatment solutions from large to small according to the weights of the vibration causes and the weights of the vibration treatment solutions, and output them.
[0115] In the specific implementation process, in the judgment matrix construction module 702, in the process of performing consistency check on the judgment matrices of two adjacent layers, a consistency check method is used to verify the judgment matrices of the two adjacent layers, and a consistency ratio is obtained and compared with a preset consistency threshold; when the consistency ratio is less than the consistency threshold, the current judgment matrix is a suitable judgment matrix, otherwise the judgment matrix is reconstructed until a suitable judgment matrix is obtained.
[0116] It should be noted here that Figure 7 The various modules in the power station pump vibration diagnosis and analysis processing device based on the hierarchical analysis method are Figure 1 The various steps in the power station water pump vibration diagnosis analysis and processing method based on the hierarchical analysis method correspond one to one, and the specific implementation process is the same, which will not be repeated here.
[0117] Reference Figure 8 , a schematic diagram of an electronic device is given. It should be noted that, Figure 8 The electronic device 800 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.
[0118] like Figure 8 As shown, electronic device 800 includes a central processing unit (CPU) 801, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 802 or a program loaded from a storage part 808 into a random access memory (RAM) 803. In RAM 803, various programs and data required for system operation are also stored. Central processing unit 801, ROM 802 and RAM 803 are connected to each other via a bus 804. Input / output (I / O) interface 805 is also connected to bus 804.
[0119] The following components are connected to the I / O interface 805: an input section 806 including a keyboard, a mouse, etc.; an output section 807 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a local area network (LAN) card, a modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the I / O interface 805 as needed. A removable medium 811, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 810 as needed, so that a computer program read therefrom is installed into the storage section 808 as needed.
[0120] When the central processing unit 801 in the electronic device of this embodiment executes the program, the following is achieved: Figure 1The steps in the power station pump vibration diagnosis analysis and processing method based on the hierarchical analysis method are shown.
[0121] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer readable medium, the computer program including a computer program for executing Figure 1 In such an embodiment, the computer program can be downloaded and installed from a network through the communication part 809, and / or installed from a removable medium 811. When the computer program is executed by the central processing unit 801, various functions defined in the apparatus of the present application are executed.
[0122] in, Figure 1 The computer program instructions corresponding to the method shown may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.
[0123] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.
[0124] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A method for diagnosing and analyzing vibration of a power station pump based on the analytic hierarchy process, characterized in that: include: A hierarchical model for handling vibration problems of power station pumps is pre-built, which consists of three layers: the first layer is the main cause of vibration; the second layer is the cause of vibration; the third layer is the vibration handling plan; Acquire the power station water pump vibration related parameters and construct the judgment matrix of two adjacent layers in combination with the hierarchical structure model for handling the power station water pump vibration problem; The judgment matrices of two adjacent layers are checked for consistency. If they pass the consistency check, the weight of the vibration cause and the weight of the vibration treatment plan are calculated using the hierarchical analysis method. According to the weight of the vibration cause and the weight of the vibration treatment plan, the vibration causes and the vibration treatment plan are sorted from large to small and output.
2. The power station pump vibration diagnosis and analysis processing method based on the analytic hierarchy process as claimed in claim 1 is characterized in that: In the process of consistency check of the judgment matrices of two adjacent layers, the consistency check method is used to verify the judgment matrices of the two adjacent layers, and the consistency ratio is obtained and compared with the preset consistency threshold; when the consistency ratio is less than the consistency threshold, the current judgment matrix is a suitable judgment matrix, otherwise the judgment matrix is reconstructed until a suitable judgment matrix is obtained.
3. The power station pump vibration diagnosis and analysis processing method based on the analytic hierarchy process as claimed in claim 1 is characterized in that: The process of calculating the weight of vibration causes using the analytic hierarchy process is as follows: The eigenvalues of the judgment matrices of the first and second layers are calculated as the weights of each vibration cause.
4. The power station pump vibration diagnosis and analysis processing method based on the analytic hierarchy process as claimed in claim 1 is characterized in that: The process of calculating the weight of vibration treatment scheme using analytic hierarchy process is as follows: The eigenvalues of the judgment matrices of two adjacent layers are calculated, and then the eigenvalues of the judgment matrices of the two adjacent layers corresponding to each vibration treatment scheme are multiplied and summed to obtain the weight of each vibration treatment scheme.
5. The power station pump vibration diagnosis and analysis processing method based on the analytic hierarchy process as claimed in claim 1, characterized in that: The weight of the vibration cause is compared with the first weight threshold, and the vibration cause with a weight greater than the first weight threshold is regarded as a main cause, and the vibration cause with a weight less than or equal to the first weight threshold is regarded as a general cause.
6. The power station pump vibration diagnosis and analysis processing method based on the analytic hierarchy process as claimed in claim 1, characterized in that: Comparing the weight of the vibration treatment scheme with a second weight threshold and a third weight threshold respectively, wherein the second weight threshold is less than the third weight threshold; considering a vibration treatment plan with a weight greater than or equal to a third weight threshold as a recommended plan; Considering the vibration treatment scheme whose weight is less than the third weight threshold and greater than or equal to the second weight threshold as an optional scheme; The vibration handling solutions whose weights are less than the second weight threshold are considered as alternative solutions.
7. A power station pump vibration diagnosis and analysis processing device based on hierarchical analysis method, characterized in that: include: A hierarchical model building module is used to pre-build a hierarchical model for handling vibration problems of power station pumps. The model consists of three layers: the first layer is the main cause of vibration; the second layer is the cause of vibration; and the third layer is the vibration handling plan. A judgment matrix construction module, which is used to obtain parameters related to the vibration of a power station water pump and construct a judgment matrix of two adjacent layers in combination with a hierarchical structure model for handling the vibration problem of the power station water pump; A hierarchical analysis calculation module is used to perform consistency check on the judgment matrices of two adjacent layers. If both pass the consistency check, the weight of the vibration cause and the weight of the vibration treatment plan are calculated using the hierarchical analysis method; The vibration diagnosis and analysis processing module is used to sort and output the vibration causes and vibration treatment solutions from large to small according to the weights of the vibration causes and the weights of the vibration treatment solutions.
8. The power station pump vibration diagnosis and analysis processing device based on the analytic hierarchy process as claimed in claim 7, characterized in that: In the judgment matrix construction module, in the process of consistency check of the judgment matrices of two adjacent layers, the consistency check method is used to verify the judgment matrices of the two adjacent layers, and the consistency ratio is obtained and compared with the preset consistency threshold; when the consistency ratio is less than the consistency threshold, the current judgment matrix is a suitable judgment matrix, otherwise the judgment matrix is reconstructed until a suitable judgment matrix is obtained.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps in the power station water pump vibration diagnosis and analysis processing method based on the hierarchical analysis method as described in any one of claims 1 to 6 are implemented.
10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps in the power station water pump vibration diagnosis and analysis processing method based on the hierarchical analysis method as described in any one of claims 1 to 6 are implemented.