A water pump shaft seal leakage detection and alarm method and device

Abstract

The present invention discloses a method and device for detecting and alarming a water pump shaft seal leakage. The invention relates to the technical field of water pump shaft seal detection data processing, and includes the following steps: collecting and processing the original data of the water pump shaft seal; obtaining a water pump shaft seal leakage evaluation index for conveying corrosive media, a water pump shaft seal sealing evaluation index, and a water pump shaft seal operating efficiency evaluation index; and comprehensively analyzing and optimizing the comprehensive performance of the water pump shaft seal. The present invention collects and processes the original data of the water pump shaft seal, obtains a water pump shaft seal leakage comprehensive detection evaluation index based on a comprehensive evaluation and analysis of the water pump shaft seal data, compares and analyzes the thresholds of the water pump shaft seal leakage comprehensive detection evaluation index, optimizes the comprehensive performance of the water pump shaft seal, improves the reliability of water pump shaft seal leakage detection and alarm, and solves the problem of insufficient reliability of water pump shaft seal leakage detection and alarm in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of water pump shaft seal detection data processing, and in particular to a water pump shaft seal leakage detection and alarm method and device. Background Art

[0002] As water pumps are widely used in industries such as industry, agriculture, construction, water supply, and drainage, their shaft seal systems are used to prevent fluid leakage from the pump shaft. However, with long-term operation, the shaft seal may experience wear and aging, leading to leakage. Once a leak occurs, it not only affects the efficiency of the equipment, but may also cause mechanical failure, thereby affecting the normal operation of the entire production system. For pumped fluids, especially toxic, harmful, flammable, and explosive media, such as chemicals in the petrochemical industry, shaft seal leakage will not only cause equipment damage, but may also cause environmental pollution, personnel poisoning, fire, and even explosions. Effective leak detection and alarm devices can detect problems in a timely manner and reduce the safety risks caused by leaks.

[0003] An existing method for detecting and alarming water pump shaft seal leakage uses liquid level detection. A liquid level sensor is set near the shaft seal to monitor whether there is liquid accumulation. A float, capacitive or ultrasonic liquid level sensor is used for remote monitoring and real-time alarm. Through sound wave detection, specific sound waves are generated when a leak occurs. The leak is judged by detecting the sound waves. The sound wave detection instrument detects tiny leaks without contacting the medium. Through infrared thermal imaging, the temperature of the leak may be different from other areas. The thermal imaging can be used to detect it using an infrared thermal imager for scanning. It can be detected remotely without contacting the medium and is suitable for high temperature environments.

[0004] For example, the invention patent with announcement number CN115165239B announces a sealing detection device method for cooling water pump bearings, including: a detection platform, a transmission device, a fastening device, a loading device, a vibration detection device, a grease leakage detection device, and a display screen. The detection platform is used to adjust the installation position of the detection equipment, the transmission device changes the speed of the rotating shaft by changing the motor power, the loading device is used to apply axial load to the cooling water pump bearing, the fastening device is used to fix the bearing, the vibration detection device is used to detect tiny cracks on the bearing surface, the grease leakage detection device is used to detect the sealing performance of the bearing seal, and the display screen is used to display the bearing sealing test results. The use of the propagation characteristics of ultrasonic waves on rough surfaces to detect micro-cracks on the bearing surface effectively improves the accuracy of sealing detection, and the grease content at the sealing port can be detected according to the grease leakage phenomenon when the cooling water pump bearing sealing is damaged, so as to accurately locate the bearing leakage point.

[0005] For example, the invention patent application with publication number CN118010268A discloses an automobile water pump seal detection tool and a detection method thereof, which include: a workbench; a fixing mechanism is fixedly connected to the top of the workbench, a column is fixedly connected to the right side of the workbench, a beam is fixedly connected to the top of the left side of the column, an air supply mechanism is fixedly connected to the right side of the bottom of the inner wall of the beam, and an alarm mechanism is fixedly connected to the top of the inner wall of the beam; the fixing mechanism includes a base, a fixing plate, a turntable and a threaded rod, the top of the workbench is fixedly connected to the base, the left and right sides of the top of the base are fixedly connected to the fixing plates, the left side of the fixing plate is movably connected to the turntable through a bearing seat, the right side of the turntable is fixedly connected to the threaded rod, and the right side of the threaded rod passes through the right side of the fixed plate.

[0006] However, in the process of implementing the technical solutions of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0007] In the existing technology, in the petrochemical industry, due to the fact that water pumps transport corrosive liquids during operation and are affected by high temperature and high pressure environments, the sealing materials of the water pump shaft seals are worn and damaged, which in turn causes the water pump shaft seals to leak. There is a problem of insufficient reliability in water pump shaft seal leakage detection and alarm. Summary of the Invention

[0008] The embodiments of the present application solve the problem of insufficient reliability of water pump shaft seal leakage detection and alarm in the prior art by providing a water pump shaft seal leakage detection and alarm method and device, thereby improving the reliability of water pump shaft seal leakage detection and alarm.

[0009] An embodiment of the present application provides a water pump shaft seal leakage detection and alarm method, comprising the following steps: collecting and processing water pump shaft seal raw data in real time monitoring through a sensor to obtain water pump shaft seal data; calculating a water pump shaft seal corrosive medium delivery leakage assessment index for a first preset time period of leakage risk based on the water pump shaft seal delivery corrosive medium leakage data; calculating a water pump shaft seal sealing assessment index for a water pump shaft seal sealing detection point at a second preset time based on the water pump shaft seal sealing data; calculating a water pump shaft seal operating efficiency assessment index for a water pump shaft seal operating efficiency detection point at a third preset time based on the water pump shaft seal operating efficiency data; obtaining a water pump shaft seal leakage comprehensive detection assessment index through comprehensive analysis; comparing and analyzing the water pump shaft seal leakage comprehensive detection assessment index with a preset water pump shaft seal leakage comprehensive detection assessment index threshold value to optimize the comprehensive performance of the water pump shaft seal.

[0010] Furthermore, the specific process of calculating the leakage assessment index of the water pump shaft seal conveying corrosive medium in the first preset time leakage risk time period is as follows: obtaining the temperature of the water pump shaft seal in the first preset time leakage risk time period through a temperature sensor; obtaining the viscosity of the corrosive medium conveyed by the water pump shaft seal in the first preset time leakage risk time period through a rotational viscometer; obtaining the pH value of the corrosive medium conveyed by the water pump shaft seal in the first preset time leakage risk time period through a pH sensor; obtaining the pressure of the water pump shaft seal in the first preset time leakage risk time period through a pressure sensor; the leakage data of the water pump shaft seal conveying corrosive medium in the first preset time leakage risk time period includes the temperature of the water pump shaft seal, the viscosity of the corrosive medium conveyed by the water pump shaft seal, the pH value of the corrosive medium conveyed by the water pump shaft seal and the pressure borne by the water pump shaft seal; and obtaining the leakage assessment index of the water pump shaft seal conveying corrosive medium in the first preset time leakage risk time period based on the analysis of the leakage data of the water pump shaft seal conveying corrosive medium in the first preset time leakage risk time period.

[0011] Furthermore, the specific process of calculating the water pump shaft seal sealing evaluation index at the water pump shaft seal sealing detection point at the second preset time is: obtaining the temperature that the water pump shaft seal is subjected to at the water pump shaft seal sealing detection point at the second preset time through a temperature sensor; obtaining the water pump shaft seal vibration amplitude at the water pump shaft seal sealing detection point at the second preset time through a MEMS accelerometer; obtaining the water pump shaft seal shaft runout at the water pump shaft seal sealing detection point at the second preset time through a dial indicator; the water pump shaft seal sealing data within the water pump shaft seal sealing detection point at the second preset time include the temperature that the water pump shaft seal is subjected to, the water pump shaft seal vibration amplitude and the water pump shaft seal shaft runout; and obtaining the water pump shaft seal sealing evaluation index based on the analysis of the water pump shaft seal sealing data within the water pump shaft seal sealing detection point at the second preset time.

[0012] Furthermore, the specific process of calculating the water pump shaft seal operation efficiency evaluation index at the third preset time water pump shaft seal operation efficiency detection point is as follows: obtaining the water pump shaft seal shaft runout at the third preset time water pump shaft seal operation efficiency detection point through a dial indicator; obtaining the water pump shaft seal operation efficiency head at the third preset time water pump shaft seal operation efficiency detection point through a water pump performance test bench; obtaining the water pump shaft seal speed at the third preset time water pump shaft seal operation efficiency detection point through a speed sensor; obtaining the temperature to which the water pump shaft seal is subjected at the third preset time water pump shaft seal operation efficiency detection point through a temperature sensor; obtaining the pressure to which the pump shaft seal is subjected at the third preset time water pump shaft seal operation efficiency detection point through a pressure sensor; the water pump shaft seal operation efficiency data within the third preset time water pump shaft seal operation efficiency detection point include the water pump shaft seal shaft runout, the water pump shaft seal operation efficiency head, the water pump shaft seal speed, the temperature to which the water pump shaft seal is subjected and the pressure to which the water pump shaft seal is subjected; and obtaining the water pump shaft seal operation efficiency evaluation index through analysis of the water pump shaft seal operation efficiency data within the third preset time water pump shaft seal operation efficiency detection point.

[0013] Furthermore, the specific process of obtaining the comprehensive detection and evaluation index of the water pump shaft seal leakage is: the comprehensive detection and evaluation index of the water pump shaft seal leakage is obtained by comprehensively analyzing the water pump shaft seal corrosive medium transmission leakage evaluation index, the water pump shaft seal sealing evaluation index and the water pump shaft seal operation efficiency evaluation index.

[0014] Furthermore, the specific process of comparing and analyzing the water pump shaft seal leakage comprehensive detection evaluation index with the preset water pump shaft seal leakage comprehensive detection evaluation index threshold is: extracting the water pump shaft seal leakage comprehensive detection evaluation index predicted safety threshold from the water pump shaft seal database, and comparing the water pump shaft seal leakage comprehensive detection evaluation index with the water pump shaft seal leakage comprehensive detection evaluation index predicted safety threshold; if the water pump shaft seal leakage comprehensive detection evaluation index is greater than or equal to the water pump shaft seal leakage comprehensive detection evaluation index predicted safety threshold, then the water pump shaft seal leakage detection risk level is low risk and the alarm mechanism is not triggered; if the water pump shaft seal leakage comprehensive detection evaluation index is less than the water pump shaft seal leakage comprehensive detection evaluation index predicted safety threshold, then the water pump shaft seal leakage detection risk level is high risk and the alarm mechanism is triggered.

[0015] Furthermore, the optimization of the comprehensive performance of the water pump shaft seal specifically includes: if the water pump shaft seal triggers an alarm mechanism, notifying relevant personnel and sending information, the information including cleaning the water pump shaft seal leakage area and repairing equipment parts damaged by the water pump shaft seal; if the water pump shaft seal does not trigger the alarm mechanism but the water pump operating efficiency is lower than the water pump operating efficiency threshold, notifying relevant personnel to remove blocked sediments and impurities.

[0016] Furthermore, the optimization of the comprehensive performance of the water pump shaft seal also includes: if the water pump shaft seal leakage assessment index of corrosive media delivery is higher than the first threshold value of the water pump shaft seal leakage assessment index, then increasing the monitoring frequency of the water pump shaft seal; if the water pump shaft seal sealing assessment index is lower than the second threshold value of the water pump shaft seal sealing assessment index, then adding an additional sealing layer around the water pump shaft seal; if the water pump shaft seal operating efficiency assessment index is lower than the third threshold value of the water pump shaft seal operating efficiency assessment index, then replacing the water pump shaft seal filter element and regularly maintaining the water pump shaft seal.

[0017] Furthermore, the optimization of the comprehensive performance of the water pump shaft seal also includes: if the water pump shaft seal leakage detection risk level is high risk and exceeds the preset number of alarms within a preset warning time period, the water pump operation is immediately stopped and relevant personnel are notified to replace the water pump.

[0018] The embodiment of the present application provides a water pump shaft seal leakage detection and alarm device, including a water pump shaft seal raw data collection and processing module, a water pump shaft seal conveying corrosive medium leakage evaluation index module, a water pump shaft seal sealing evaluation index module, a water pump shaft seal operation efficiency evaluation index module, a water pump shaft seal leakage comprehensive detection evaluation index module and a water pump shaft seal comprehensive performance optimization module: a water pump shaft seal raw data collection and processing module: used for real-time monitoring through sensors to collect and process water pump shaft seal raw data to obtain water pump shaft seal data; a water pump shaft seal conveying corrosive medium leakage evaluation index module: used to calculate the water pump shaft seal conveying corrosive medium leakage risk time period in a first preset time period through the water pump shaft seal conveying corrosive medium leakage data. Medium leakage assessment index; water pump shaft seal sealing assessment index module: used to calculate the water pump shaft seal sealing assessment index of the water pump shaft seal sealing detection point at the second preset time through the water pump shaft seal sealing data; water pump shaft seal operation efficiency assessment index module: used to calculate the water pump shaft seal operation efficiency assessment index of the water pump shaft seal operation efficiency detection point at the third preset time through the water pump shaft seal operation efficiency data; water pump shaft seal leakage comprehensive detection assessment index module: used to comprehensively analyze and obtain the water pump shaft seal leakage comprehensive detection assessment index; water pump shaft seal comprehensive performance optimization module: used to compare and analyze the water pump shaft seal leakage comprehensive detection assessment index with the preset water pump shaft seal leakage comprehensive detection assessment index threshold to optimize the comprehensive performance of the water pump shaft seal.

[0019] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0020] 1. By collecting and processing the original data of the water pump shaft seal, the water pump shaft seal leakage assessment index for conveying corrosive media, the water pump shaft seal sealing assessment index and the water pump shaft seal operation efficiency assessment index are obtained; the comprehensive performance of the water pump shaft seal is comprehensively analyzed and optimized, thereby improving the reliability of the water pump shaft seal leakage detection and alarm, and solving the problem of insufficient reliability of the water pump shaft seal leakage detection and alarm in the existing technology.

[0021] 2. By obtaining the water pump shaft seal leakage evaluation index of corrosive media conveying, the water pump shaft seal sealing evaluation index and the water pump shaft seal operation efficiency evaluation index, measures can be taken to improve the operation efficiency of the water pump shaft seal, reduce the water pump shaft seal leakage, and thus achieve the stability of the water pump shaft seal leakage detection and alarm method.

[0022] 3. By comprehensively analyzing and optimizing the comprehensive performance of the water pump shaft seal, the sealing and durability of the water pump shaft seal can be improved, the service life of the water pump shaft seal can be extended, the replacement frequency can be reduced, and leakage and emission can be reduced to reduce the impact on the environment, thereby improving the safety of water pump shaft seal leakage detection and alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Flowchart of the water pump shaft seal leakage detection and alarm method provided in an embodiment of the present application;

[0024] Figure 2 Schematic diagram of the comprehensive detection and evaluation index function for water pump shaft seal leakage provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the structure of a water pump shaft seal leakage detection and alarm system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The embodiments of the present application solve the problem of insufficient reliability of water pump shaft seal leakage detection and alarm in the prior art by providing a water pump shaft seal leakage detection and alarm method and device. By collecting and processing the original data of the water pump shaft seal and obtaining a water pump shaft seal leakage comprehensive detection evaluation index based on comprehensive evaluation and analysis of the water pump shaft seal data, and performing comparative analysis on the threshold values ​​of the water pump shaft seal leakage comprehensive detection evaluation index, the comprehensive performance of the water pump shaft seal is optimized, and the reliability of water pump shaft seal leakage detection and alarm is improved.

[0027] The technical solution in the embodiment of the present application is to solve the above-mentioned problem of insufficient reliability of water pump shaft seal leakage detection and alarm. The overall idea is as follows:

[0028] By collecting and processing the original data of the water pump shaft seal, and obtaining the water pump shaft seal leakage comprehensive detection evaluation index based on the comprehensive evaluation and analysis of the water pump shaft seal data, and comparing and analyzing the thresholds of the water pump shaft seal leakage comprehensive detection evaluation index, the comprehensive performance of the water pump shaft seal is optimized and the reliability of water pump shaft seal leakage detection and alarm is improved.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] like Figure 1 As shown, it is a flow chart of the water pump shaft seal leakage detection and alarm method provided in an embodiment of the present application, and the method is applied to a water pump shaft seal leakage detection and alarm device, and the method includes the following steps: real-time monitoring, collecting and processing water pump shaft seal raw data through sensors to obtain water pump shaft seal data; calculating the water pump shaft seal conveying corrosive medium leakage evaluation index for a first preset time leakage risk period through the water pump shaft seal conveying corrosive medium leakage data; calculating the water pump shaft seal sealing evaluation index for a second preset time water pump shaft seal sealing detection point through the water pump shaft seal sealing data; calculating the water pump shaft seal operating efficiency evaluation index for a third preset time water pump shaft seal operating efficiency detection point through the water pump shaft seal operating efficiency data; comprehensively analyzing to obtain a water pump shaft seal leakage comprehensive detection evaluation index; comparing and analyzing the water pump shaft seal leakage comprehensive detection evaluation index with a preset water pump shaft seal leakage comprehensive detection evaluation index threshold to optimize the comprehensive performance of the water pump shaft seal.

[0031] In this embodiment, data is collected in real time by an ultrasonic sensor to obtain raw data of the water pump shaft seal; the water pump shaft seal data is obtained by cleaning the raw data of the water pump shaft seal, and the water pump shaft seal data includes leakage data of corrosive media transported by the water pump shaft seal, water pump shaft seal sealing data and water pump shaft seal operating efficiency data, and the starting points of the three detection times, namely, the first preset time leakage risk time period, the second preset time water pump shaft seal sealing detection point and the third preset time water pump shaft seal operating efficiency detection point, are consistent and start from the start of the water pump operation.

[0032] Furthermore, the specific process of calculating the leakage assessment index of the water pump shaft seal conveying corrosive media in the first preset time leakage risk time period is as follows: obtaining the temperature of the water pump shaft seal in the first preset time leakage risk time period through a temperature sensor; obtaining the viscosity of the corrosive medium conveyed by the water pump shaft seal in the first preset time leakage risk time period through a rotational viscometer; obtaining the pH value of the corrosive medium conveyed by the water pump shaft seal in the first preset time leakage risk time period through a pH sensor; obtaining the pressure of the water pump shaft seal in the first preset time leakage risk time period through a pressure sensor; the leakage data of the water pump shaft seal conveying corrosive media in the first preset time leakage risk time period includes the temperature of the water pump shaft seal, the viscosity of the corrosive medium conveyed by the water pump shaft seal, the pH value of the corrosive medium conveyed by the water pump shaft seal and the pressure borne by the water pump shaft seal; the leakage assessment index of the water pump shaft seal conveying corrosive media in the first preset time leakage risk time period is obtained based on the analysis of the leakage data of the water pump shaft seal conveying corrosive media in the first preset time leakage risk time period.

[0033] In this embodiment, the specific formula for the leakage evaluation index of the water pump shaft seal conveying corrosive media is obtained from this analysis:

[0034] ;

[0035] ;

[0036] ;

[0037] Number the preset detection points for leakage risk of corrosive media transported by water pump shaft seals in sequence. Indicates the The number of the detection point for the risk of leakage of corrosive media conveyed by the water pump shaft seal in the risk period of leakage of corrosive media conveyed by the water pump shaft seal, , Indicates the total number of detection points for the risk of leakage of corrosive media transported by the pump shaft seal.

[0038] Divide the preset risk time of leakage of corrosive media from the pump shaft seal into risk time periods of the same length. Indicates the number of the time period when the pump shaft seal is at risk of leaking corrosive media. , The total number of time periods indicating the risk of leakage of corrosive media transported by the pump shaft seal.

[0039] Number the preset water pump shaft seal pressure detection points in sequence. Indicates the The number of the pump shaft seal pressure detection point during the period of risk of leakage of the pump shaft seal conveying corrosive media, , Indicates the total number of pump shaft seal pressure detection points.

[0040] Indicates the The risk assessment index of water pump shaft seal leakage of corrosive media in a certain period of time.

[0041] Indicates the The temperature of the water pump shaft seal at each water pump shaft seal leakage risk detection point for conveying corrosive media is obtained by a temperature sensor, which is a PT100 platinum resistance temperature sensor.

[0042] Indicates the temperature standard value of the water pump shaft seal under normal working conditions, which is the preset temperature standard value of the water pump shaft seal under normal working conditions obtained from the water pump shaft seal database.

[0043] Indicates the The viscosity of the corrosive medium transported by the water pump shaft seal at each water pump shaft seal leakage risk detection point.

[0044] Indicates the viscosity of the corrosive medium conveyed by the water pump shaft seal, and the preset viscosity threshold of the corrosive medium conveyed by the water pump shaft seal is obtained from the water pump shaft seal database.

[0045] Indicates the The pH value of the corrosive medium transported by the water pump shaft seal at each water pump shaft seal leakage risk detection point.

[0046] Indicates the pH value threshold for the pump shaft seal to transport corrosive media. The pH value threshold for the pump shaft seal to transport corrosive media is 7. The preset pH value threshold for the pump shaft seal to transport corrosive media is obtained from the pump shaft seal database.

[0047] Indicates the The water pump shaft seal pressure detection evaluation value during the time period of risk of leakage of the water pump shaft seal when transporting corrosive media.

[0048] Indicates in The maximum pressure that the pump shaft seal can withstand during the risk period of leakage of corrosive media transported by the pump shaft seal.

[0049] Indicates the The pressure that the pump shaft seal is subjected to at each pump shaft seal pressure testing point.

[0050] Indicates the first The minimum pressure that the pump shaft seal can withstand during the risk period of leakage of corrosive media transported by the pump shaft seal.

[0051] The weight factor of the temperature impact on the preset water pump shaft seal is obtained from the water pump shaft seal database.

[0052] The weighting factor for the viscosity impact of corrosive media conveyed by the preset water pump shaft seal obtained from the water pump shaft seal database.

[0053] The pH value impact weight factor of the corrosive medium conveyed by the preset water pump shaft seal obtained from the water pump shaft seal database.

[0054] The particle content of the corrosive medium is an influence factor corresponding to the unit value of the temperature that the water pump shaft seal is subjected to, the viscosity of the corrosive medium conveyed by the water pump shaft seal, and the pH value of the corrosive medium conveyed by the preset water pump shaft seal in the water pump shaft seal database. It represents the numerical value of the influence of the temperature that the water pump shaft seal is subjected to, the viscosity of the corrosive medium conveyed by the water pump shaft seal, and the pH value of the corrosive medium conveyed by the preset water pump shaft seal on the leakage assessment index of the corrosive medium conveyed by the water pump shaft seal. When used, the influence factors corresponding to the temperature that the water pump shaft seal is subjected to, the viscosity of the corrosive medium conveyed by the water pump shaft seal, and the pH value of the corrosive medium conveyed by the preset water pump shaft seal can be directly obtained from the water pump shaft seal database. The corresponding relationship can be a preset A mapping relationship is first set, for example, the particle content of the corrosive medium and the temperature that the water pump shaft seal can withstand, the viscosity of the corrosive medium conveyed by the water pump shaft seal, the pH value unit value of the corrosive medium conveyed by the preset water pump shaft seal in the water pump shaft seal database and their corresponding influencing factors form a mapping set, and the real-time temperature that the water pump shaft seal can withstand, the viscosity of the corrosive medium conveyed by the water pump shaft seal and the pH value of the corrosive medium conveyed by the preset water pump shaft seal are input into the mapping set to obtain the influencing factors corresponding to the temperature that the water pump shaft seal can withstand, the viscosity of the corrosive medium conveyed by the water pump shaft seal and the pH value unit value of the corrosive medium conveyed by the preset water pump shaft seal, wherein the mapping relationship can be one-to-one or many-to-one.

[0055] Table 1 is an example table of the leakage assessment index of the corrosive medium conveyed by the water pump shaft seal. The example parameters in Table 1 only take the parameters under one water pump shaft seal conveying corrosive medium leakage risk detection point for illustration. The weight factor Set to 0.3, the weight factor Set to 0.3, the weight factor It is set to 0.4, and the water pump shaft seal pressure detection evaluation value is fixed at 1, as shown in Table 1.

[0056] Table 1 Example of leakage assessment index for pump shaft seals conveying corrosive media

[0057]

[0058] The higher the temperature the water pump shaft seal is subjected to, the softening of the water pump shaft seal sealing material will occur, the increased pressure on the water pump shaft seal will occur, the higher the viscosity of the corrosive medium transported by the water pump shaft seal will be, and the pH value of the corrosive medium transported by the water pump shaft seal will be acidic or alkaline, which will affect the water pump shaft seal sealing material and cause the water pump shaft seal sealing material to be corroded.

[0059] The increase in temperature that the water pump shaft seal is subjected to causes the hardness and elasticity of the water pump shaft seal sealing material to decrease, increasing the risk of leakage of the corrosive medium transported by the water pump shaft seal. The more the temperature that the water pump shaft seal is subjected to deviates from the temperature standard value of the water pump shaft seal under normal working conditions, the positive correlation exists between the temperature that the water pump shaft seal is subjected to and the water pump shaft seal leakage assessment index of corrosive medium transported, and the water pump shaft seal leakage assessment index of corrosive medium transported increases; the closer the viscosity of the corrosive medium transported by the water pump shaft seal is to the maximum viscosity threshold value of the corrosive medium transported by the water pump shaft seal, the greater the correlation is between the viscosity of the corrosive medium transported by the water pump shaft seal and the leakage of the corrosive medium transported by the water pump shaft seal. There is a positive correlation between the evaluation indices, and the leakage evaluation index of the water pump shaft seal conveying corrosive media increases; the closer the pH value of the water pump shaft seal conveying corrosive media approaches the pH value threshold of the water pump shaft seal conveying corrosive media, the negative correlation exists between the pH value of the water pump shaft seal conveying corrosive media and the leakage evaluation index of the water pump shaft seal conveying corrosive media, and the leakage evaluation index of the water pump shaft seal conveying corrosive media decreases; the greater the pressure the water pump shaft seal withstands, the positive correlation exists between the pressure the water pump shaft seal withstands and the leakage evaluation index of the water pump shaft seal conveying corrosive media, and the leakage evaluation index of the water pump shaft seal conveying corrosive media increases.

[0060] Furthermore, the specific process of calculating the water pump shaft seal sealing evaluation index at the water pump shaft seal sealing detection point at the second preset time is as follows: obtaining the temperature borne by the water pump shaft seal at the water pump shaft seal sealing detection point at the second preset time through the temperature sensor; obtaining the water pump shaft seal vibration amplitude at the water pump shaft seal sealing detection point at the second preset time through the MEMS accelerometer; obtaining the water pump shaft seal shaft runout at the water pump shaft seal sealing detection point at the second preset time through the dial indicator; the water pump shaft seal sealing data within the water pump shaft seal sealing detection point at the second preset time include the temperature borne by the water pump shaft seal, the water pump shaft seal vibration amplitude and the water pump shaft seal shaft runout; and obtaining the water pump shaft seal sealing evaluation index based on the analysis of the water pump shaft seal sealing data within the water pump shaft seal sealing detection point at the second preset time.

[0061] In this embodiment, the specific formula for the water pump shaft seal sealing evaluation index is obtained from this analysis as follows:

[0062] ;

[0063] ;

[0064] ;

[0065] Number the preset water pump shaft seal sealing test points in sequence. Indicates the The number of the pump shaft seal sealing test point in each pump shaft seal sealing time period, , Indicates the total number of pump shaft seal sealing test points.

[0066] Divide the preset pump shaft seal sealing time into pump shaft seal sealing time periods of the same length. Indicates the number of the pump shaft seal sealing time period, , The total number of time periods indicating the pump shaft seal tightness.

[0067] Indicates the The water pump shaft seal sealing evaluation index of each water pump shaft seal sealing test point.

[0068] Indicates the The temperature that the pump shaft seal can withstand at each pump shaft seal sealing test point.

[0069] Indicates the temperature standard value of the water pump shaft seal under normal working conditions, which is the preset temperature standard value of the water pump shaft seal under normal working conditions obtained from the water pump shaft seal database.

[0070] Indicates the The vibration amplitude of the water pump shaft seal at each water pump shaft seal sealing test point.

[0071] Indicates the pump shaft seal vibration amplitude threshold, which is the preset pump shaft seal vibration amplitude threshold obtained from the pump shaft seal database.

[0072] Indicates the symmetry coefficient of the pump shaft seal runout.

[0073] Indicates the The pump shaft seal shaft runout at each pump shaft seal sealing test point.

[0074] Indicates the preset shaft runout threshold of the water pump shaft seal, which is obtained from the water pump shaft seal database.

[0075] The weight factor of the temperature impact on the preset water pump shaft seal is obtained from the water pump shaft seal database.

[0076] It is the preset water pump shaft seal vibration amplitude impact weight factor obtained from the water pump shaft seal database.

[0077] The weight factor affecting the preset water pump shaft seal shaft runout is obtained from the water pump shaft seal database.

[0078] The water pump shaft seal speed is an influence factor corresponding to the unit value of the water pump shaft seal temperature, water pump shaft seal vibration amplitude and water pump shaft seal shaft runout preset in the water pump shaft seal database, which represents the influence degree of the water pump shaft seal temperature, water pump shaft seal vibration amplitude and water pump shaft seal shaft runout on the water pump shaft seal sealing evaluation index. When used, the influence factors corresponding to the water pump shaft seal temperature, water pump shaft seal vibration amplitude and water pump shaft seal shaft runout can be directly obtained from the water pump shaft seal database. The corresponding relationship can be preset. For example, a mapping relationship is formed between the water pump shaft seal speed and the water pump shaft seal temperature, water pump shaft seal vibration amplitude, water pump shaft seal shaft runout unit values ​​and their corresponding influencing factors preset in the water pump shaft seal database. The real-time water pump shaft seal temperature, water pump shaft seal vibration amplitude and water pump shaft seal shaft runout are input into the mapping set to obtain the influencing factors corresponding to the water pump shaft seal temperature, water pump shaft seal vibration amplitude and water pump shaft seal shaft runout unit values. The mapping relationship can be one-to-one or many-to-one.

[0079] Too high or too low a temperature to which the pump shaft seal is subjected will cause thermal expansion or contraction of the water pump shaft seal sealing material, resulting in hardening or softening of the water pump shaft seal surface, affecting the water pump shaft seal shaft runout; the higher the temperature to which the pump shaft seal is subjected, the more the water pump shaft seal sealing material expands, the greater the water pump shaft seal shaft runout, and the greater the water pump shaft seal vibration amplitude.

[0080] The temperature that the water pump shaft seal is subjected to approaches the temperature standard value under the normal working condition of the water pump shaft seal, the water pump shaft seal sealing material expands, and there is a negative correlation between the temperature that the water pump shaft seal is subjected to and the water pump shaft seal sealing evaluation index, and the smaller the water pump shaft seal sealing evaluation index is; the greater the water pump shaft seal vibration amplitude, there is a negative correlation between the water pump shaft seal vibration amplitude and the water pump shaft seal sealing evaluation index, and the smaller the water pump shaft seal sealing evaluation index is; the greater the water pump shaft seal shaft runout, there is a negative correlation between the water pump shaft seal shaft runout and the water pump shaft seal sealing evaluation index, and the smaller the water pump shaft seal sealing evaluation index is.

[0081] Furthermore, the specific process of calculating the water pump shaft seal operation efficiency evaluation index at the third preset time water pump shaft seal operation efficiency detection point is as follows: obtaining the water pump shaft seal shaft runout at the third preset time water pump shaft seal operation efficiency detection point through a dial indicator; obtaining the water pump shaft seal operation efficiency head at the third preset time water pump shaft seal operation efficiency detection point through a water pump performance test bench; obtaining the water pump shaft seal speed at the third preset time water pump shaft seal operation efficiency detection point through a speed sensor; obtaining the temperature to which the water pump shaft seal is subjected at the third preset time water pump shaft seal operation efficiency detection point through a temperature sensor; obtaining the pressure to which the water pump shaft seal is subjected at the third preset time water pump shaft seal operation efficiency detection point through a pressure sensor; the water pump shaft seal operation efficiency data within the third preset time water pump shaft seal operation efficiency detection point include the water pump shaft seal shaft runout, the water pump shaft seal operation efficiency head, the water pump shaft seal speed, the temperature to which the water pump shaft seal is subjected and the pressure to which the water pump shaft seal is subjected; and obtaining the water pump shaft seal operation efficiency evaluation index through analysis of the water pump shaft seal operation efficiency data within the third preset time water pump shaft seal operation efficiency detection point.

[0082] In this embodiment, the specific formula for the water pump shaft seal operation efficiency evaluation index is obtained from this analysis as follows:

[0083] ;

[0084] ;

[0085] ;

[0086] ;

[0087] ;

[0088] Number the preset pump shaft seal operation efficiency detection points in sequence. Indicates the number of the pump shaft seal operation efficiency detection point, , Indicates the total number of detection points for the pump shaft seal operating efficiency.

[0089] Indicates the The water pump shaft seal operation efficiency evaluation index of each water pump shaft seal operation efficiency detection point.

[0090] Indicates the temperature-corrected evaluation value of the water pump shaft seal operating efficiency.

[0091] Indicates the pressure-corrected evaluation value of the pump shaft seal operating efficiency.

[0092] Indicates the The pump shaft seal shaft runout at each pump shaft seal operation efficiency detection point.

[0093] Indicates the preset shaft runout threshold of the water pump shaft seal, which is obtained from the water pump shaft seal database. The preset shaft runout threshold of the water pump shaft seal is the historical average shaft runout of the water pump shaft seal under normal operation.

[0094] Indicates the The head of the water pump shaft seal operation efficiency at each water pump shaft seal operation efficiency detection point.

[0095] Indicates the maximum head of the pump shaft seal operating efficiency, and the preset maximum head threshold of the pump shaft seal operating efficiency is obtained from the pump shaft seal database.

[0096] Indicates the The pump shaft seal speed of the pump shaft seal operating efficiency at each pump shaft seal operating efficiency detection point.

[0097] The maximum speed of the pump shaft seal indicating the operating efficiency of the pump shaft seal is obtained from the pump shaft seal database, which is a preset maximum speed threshold of the pump shaft seal indicating the operating efficiency of the pump shaft seal.

[0098] Indicates the The temperature that the pump shaft seal can withstand at each pump shaft seal operation efficiency detection point.

[0099] The standard temperature value of the water pump shaft seal under normal working conditions, which represents the operating efficiency of the water pump shaft seal, is obtained from the water pump shaft seal database as a preset standard temperature value of the water pump shaft seal under normal working conditions.

[0100] Indicates the The pressure that the pump shaft seal can withstand at each pump shaft seal operation efficiency detection point.

[0101] The maximum pressure that the pump shaft seal can withstand, which indicates the operating efficiency of the pump shaft seal, is obtained from the pump shaft seal database and is the preset maximum pressure threshold that the pump shaft seal can withstand.

[0102] The weight factor affecting the preset water pump shaft seal shaft runout is obtained from the water pump shaft seal database.

[0103] The head influence weight factor of the preset water pump shaft seal operating efficiency is obtained from the water pump shaft seal database.

[0104] It is the preset water pump shaft seal speed impact weight factor obtained from the water pump shaft seal database.

[0105] It is the temperature correction factor that the preset water pump shaft seal is subjected to, obtained from the water pump shaft seal database.

[0106] It is the pressure correction factor of the preset water pump shaft seal obtained from the water pump shaft seal database.

[0107] The water pump shaft seal corrosion rate is an influencing factor corresponding to the unit values ​​of the water pump shaft seal shaft runout, the head of the water pump shaft seal operating efficiency, the water pump shaft seal speed, the temperature borne by the water pump shaft seal and the pressure borne by the water pump shaft seal preset in the water pump shaft seal database, which represents the degree of influence of the water pump shaft seal shaft runout, the head of the water pump shaft seal operating efficiency, the water pump shaft seal speed, the temperature borne by the water pump shaft seal and the pressure borne by the water pump shaft seal on the water pump shaft seal operating efficiency evaluation index. When used, the influencing factors corresponding to the water pump shaft seal shaft runout, the head of the water pump shaft seal operating efficiency, the water pump shaft seal speed, the temperature borne by the water pump shaft seal and the pressure borne by the water pump shaft seal can be directly obtained from the water pump shaft seal database, and the corresponding relationship can be preset. A certain mapping relationship is formed, for example, a mapping set is formed with the water pump shaft seal corrosion rate and the water pump shaft seal shaft runout, the head of the water pump shaft seal operating efficiency, the water pump shaft seal speed, the temperature borne by the water pump shaft seal and the pressure borne by the water pump shaft seal preset in the water pump shaft seal database and their corresponding influencing factors. The real-time water pump shaft seal shaft runout, the head of the water pump shaft seal operating efficiency, the water pump shaft seal speed, the temperature borne by the water pump shaft seal and the pressure borne by the water pump shaft seal are input into the mapping set to obtain the influencing factors corresponding to the water pump shaft seal shaft runout, the head of the water pump shaft seal operating efficiency, the water pump shaft seal speed, the temperature borne by the water pump shaft seal and the pressure borne by the water pump shaft seal. The mapping relationship can be one-to-one or many-to-one.

[0108] The higher the speed of the water pump shaft seal, the more serious the wear of the water pump shaft seal sealing surface, the higher the temperature the water pump shaft seal is subjected to, resulting in an increase in the water pump shaft seal shaft runout, the higher the head of the water pump shaft seal operating efficiency, and the greater the pressure the water pump shaft seal is subjected to.

[0109] The greater the water pump shaft seal runout, the negative correlation exists between the water pump shaft seal runout and the water pump shaft seal operation efficiency evaluation index, and the smaller the water pump shaft seal operation efficiency evaluation index; the higher the water pump shaft seal operation efficiency head, the positive correlation exists between the water pump shaft seal operation efficiency head and the water pump shaft seal operation efficiency evaluation index, and the water pump shaft seal operation efficiency evaluation index increases; the higher the water pump shaft seal speed, the positive correlation exists between the water pump shaft seal speed and the water pump shaft seal operation efficiency evaluation index, and the water pump shaft seal operation efficiency evaluation index increases; the temperature borne by the water pump shaft seal approaches the temperature standard value under the normal working condition of the water pump shaft seal, the negative correlation exists between the temperature borne by the water pump shaft seal and the water pump shaft seal operation efficiency evaluation index, and the smaller the water pump shaft seal operation efficiency evaluation index; the greater the pressure borne by the water pump shaft seal, the negative correlation exists between the pressure borne by the water pump shaft seal and the water pump shaft seal operation efficiency evaluation index, and the smaller the water pump shaft seal operation efficiency evaluation index.

[0110] Furthermore, the specific process of obtaining the comprehensive detection and evaluation index of the water pump shaft seal leakage is as follows: the comprehensive detection and evaluation index of the water pump shaft seal leakage is obtained through comprehensive analysis of the water pump shaft seal corrosive medium transmission leakage evaluation index, the water pump shaft seal sealing evaluation index and the water pump shaft seal operation efficiency evaluation index.

[0111] In this embodiment, the specific process of obtaining the comprehensive detection evaluation index of the water pump shaft seal leakage is as follows:

[0112] ;

[0113] ;

[0114] Indicates the comprehensive detection and evaluation index of water pump shaft seal leakage.

[0115] Indicates the The risk assessment index of water pump shaft seal leakage of corrosive media in a certain period of time.

[0116] Indicates the The water pump shaft seal sealing evaluation index of each water pump shaft seal sealing test point.

[0117] Indicates the The water pump shaft seal operation efficiency evaluation index of each water pump shaft seal operation efficiency detection point.

[0118] The weight factor affecting the leakage risk assessment index of the preset water pump shaft seal conveying corrosive media obtained from the water pump shaft seal database.

[0119] It is the influence weight factor of the preset water pump shaft seal sealing evaluation index obtained from the water pump shaft seal database.

[0120] The influencing weight factor of the preset water pump shaft seal operation efficiency evaluation index obtained from the water pump shaft seal database.

[0121] The comprehensive detection and evaluation index of water pump shaft seal leakage is obtained by comprehensive analysis of the water pump shaft seal leakage risk assessment index of corrosive media conveying, the water pump shaft seal sealing assessment index and the water pump shaft seal operation efficiency assessment index; the larger the comprehensive detection and evaluation index of water pump shaft seal leakage, the better the water pump operation effect and the smaller the possibility of water pump shaft seal leakage; the smaller the comprehensive detection and evaluation index of water pump shaft seal leakage, the worse the water pump operation effect and the greater the possibility of water pump shaft seal leakage.

[0122] The roughness of the water pump shaft seal sealing surface is an influencing factor corresponding to the unit values ​​of the water pump shaft seal conveying corrosive medium leakage assessment index, the water pump shaft seal sealing assessment index and the water pump shaft seal operation efficiency assessment index preset in the water pump shaft seal database, which represents the numerical value of the influence of the water pump shaft seal conveying corrosive medium leakage assessment index, the water pump shaft seal sealing assessment index and the water pump shaft seal operation efficiency assessment index on the water pump shaft seal leakage comprehensive detection assessment index. When used, the influencing factors corresponding to the water pump shaft seal conveying corrosive medium leakage assessment index, the water pump shaft seal sealing assessment index and the water pump shaft seal operation efficiency assessment index can be directly obtained from the water pump shaft seal database. The corresponding relationship can be preset. A set mapping relationship, for example, the roughness of the water pump shaft seal sealing surface and the preset water pump shaft seal leakage assessment index for conveying corrosive media, the water pump shaft seal sealing assessment index and the water pump shaft seal operation efficiency assessment index unit values ​​and their corresponding influencing factors in the water pump shaft seal database form a mapping set, and the real-time water pump shaft seal leakage assessment index for conveying corrosive media, the water pump shaft seal sealing assessment index and the water pump shaft seal operation efficiency assessment index are input into the mapping set to obtain the influencing factors corresponding to the unit values ​​of the water pump shaft seal leakage assessment index for conveying corrosive media, the water pump shaft seal sealing assessment index and the water pump shaft seal operation efficiency assessment index, wherein the mapping relationship can be one-to-one or many-to-one.

[0123] like Figure 2 As shown, it is a schematic diagram of the comprehensive detection and evaluation index function of the water pump shaft seal leakage provided by the embodiment of the present application; x is the positive half axis of the horizontal coordinate, y is the positive half axis of the vertical coordinate, and the weight factor Set to 0.5, the weight factor Set to 0.2, the weight factor Set to 0.3.

[0124] Curve a indicates that if the water pump shaft seal leakage evaluation index for conveying corrosive media is set to a fixed value of 1, the water pump shaft seal operation efficiency evaluation index is set to a fixed value of 1, the water pump shaft seal sealing evaluation index is x, and the water pump shaft seal leakage comprehensive detection evaluation index is y, the water pump shaft seal leakage comprehensive detection evaluation index increases with the increase of the water pump shaft seal sealing evaluation index.

[0125] Curve b indicates that if the water pump shaft seal sealing evaluation index is set to a fixed value of 2, the water pump shaft seal operation efficiency evaluation index is set to a fixed value of 1, the water pump shaft seal leakage evaluation index of corrosive media is x, and the water pump shaft seal leakage comprehensive detection evaluation index is y, the water pump shaft seal leakage comprehensive detection evaluation index decreases as the water pump shaft seal leakage evaluation index of corrosive media increases.

[0126] Curve c indicates that if the water pump shaft seal sealing evaluation index is set to a fixed value of 2, the water pump shaft seal leakage evaluation index for conveying corrosive media is set to a fixed value of 1, the water pump shaft seal operation efficiency evaluation index is x, and the water pump shaft seal leakage comprehensive detection evaluation index is y, the water pump shaft seal leakage comprehensive detection evaluation index increases with the increase of the water pump shaft seal operation efficiency evaluation index.

[0127] Furthermore, the specific process of comparing and analyzing the comprehensive detection evaluation index of the water pump shaft seal leakage with the preset comprehensive detection evaluation index threshold of the water pump shaft seal leakage is as follows: extracting the comprehensive detection evaluation index prediction safety threshold of the water pump shaft seal leakage from the water pump shaft seal database, and comparing the comprehensive detection evaluation index of the water pump shaft seal leakage with the comprehensive detection evaluation index prediction safety threshold of the water pump shaft seal leakage. If the comprehensive detection evaluation index of the water pump shaft seal leakage is greater than or equal to the comprehensive detection evaluation index prediction safety threshold of the water pump shaft seal leakage, then the water pump shaft seal leakage detection risk level is low risk and the alarm mechanism is not triggered. If the comprehensive detection evaluation index of the water pump shaft seal leakage is less than the comprehensive detection evaluation index prediction safety threshold of the water pump shaft seal leakage, then the water pump shaft seal leakage detection risk level is high risk and the alarm mechanism is triggered.

[0128] Furthermore, the comprehensive performance of the water pump shaft seal is optimized, specifically including: if the water pump shaft seal triggers the alarm mechanism, relevant personnel are notified and information is sent, the information including cleaning the water pump shaft seal leakage area and repairing the equipment parts damaged by the water pump shaft seal; if the water pump shaft seal does not trigger the alarm mechanism but the water pump operating efficiency is lower than the water pump operating efficiency threshold, relevant personnel are notified to remove the blocked sediment and impurities.

[0129] Furthermore, optimizing the comprehensive performance of the water pump shaft seal also includes: if the water pump shaft seal leakage assessment index for conveying corrosive media is higher than the first threshold value of the water pump shaft seal leakage assessment index, increasing the monitoring frequency of the water pump shaft seal; if the water pump shaft seal sealing assessment index is lower than the second threshold value of the water pump shaft seal sealing assessment index, adding an additional sealing layer around the water pump shaft seal; if the water pump shaft seal operation efficiency assessment index is lower than the third threshold value of the water pump shaft seal operation efficiency assessment index, replacing the filter element of the water pump shaft seal and regularly maintaining the water pump shaft seal; the first threshold value of the water pump shaft seal leakage assessment index for conveying corrosive media is greater than the second threshold value of the water pump shaft seal sealing assessment index; the second threshold value of the water pump shaft seal sealing assessment index is greater than the third threshold value of the water pump shaft seal operation efficiency assessment index.

[0130] Furthermore, optimizing the comprehensive performance of the water pump shaft seal also includes: if the water pump shaft seal leakage detection risk level is high risk and exceeds the preset number of alarms within the preset warning time period, the water pump operation will be stopped immediately and relevant personnel will be notified to replace the water pump.

[0131] like Figure 3 As shown, it is a structural diagram of the water pump shaft seal leakage detection and alarm device provided in an embodiment of the present application. The water pump shaft seal leakage detection and alarm device provided in an embodiment of the present application includes: a water pump shaft seal raw data collection and processing module, a water pump shaft seal corrosive medium transmission leakage evaluation index module, a water pump shaft seal sealing evaluation index module, a water pump shaft seal operation efficiency evaluation index module, a water pump shaft seal leakage comprehensive detection evaluation index module and a water pump shaft seal comprehensive performance optimization module: a water pump shaft seal raw data collection and processing module: used for real-time monitoring, collection and processing of water pump shaft seal raw data through sensors to obtain water pump shaft seal data; a water pump shaft seal corrosive medium transmission leakage evaluation index module: used for calculating the leakage risk of the first preset time through the water pump shaft seal transmission corrosive medium leakage data Water pump shaft seal leakage evaluation index for conveying corrosive media in dangerous time periods; Water pump shaft seal sealing evaluation index module: used to calculate the water pump shaft seal sealing evaluation index of the water pump shaft seal sealing detection point at the second preset time through the water pump shaft seal sealing data; Water pump shaft seal operation efficiency evaluation index module: used to calculate the water pump shaft seal operation efficiency evaluation index of the water pump shaft seal operation efficiency detection point at the third preset time through the water pump shaft seal operation efficiency data; Water pump shaft seal leakage comprehensive detection evaluation index module: used to comprehensively analyze and obtain the water pump shaft seal leakage comprehensive detection evaluation index; Water pump shaft seal comprehensive performance optimization module: used to compare and analyze the water pump shaft seal leakage comprehensive detection evaluation index with the preset water pump shaft seal leakage comprehensive detection evaluation index threshold value to optimize the comprehensive performance of the water pump shaft seal.

[0132] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0133] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0134] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0135] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0136] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0137] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A water pump shaft seal leakage detection and alarm method, characterized in that: The following steps are involved: The water pump shaft seal data is obtained by real-time monitoring, collecting and processing the raw data of the water pump shaft seal through the sensor; Calculating the water pump shaft seal conveying corrosive medium leakage assessment index for the first preset time period of leakage risk based on the water pump shaft seal conveying corrosive medium leakage data; Calculating a water pump shaft seal sealing evaluation index at a second preset time water pump shaft seal sealing detection point based on the water pump shaft seal sealing data; Calculating a water pump shaft seal operation efficiency evaluation index at a water pump shaft seal operation efficiency detection point at a third preset time using the water pump shaft seal operation efficiency data; Comprehensive analysis yields the comprehensive detection and evaluation index for water pump shaft seal leakage; Compare and analyze the comprehensive detection and evaluation index of the water pump shaft seal leakage with the preset comprehensive detection and evaluation index threshold of the water pump shaft seal leakage to optimize the comprehensive performance of the water pump shaft seal; The specific process of calculating the leakage assessment index of the pump shaft seal conveying corrosive media in the first preset leakage risk time period is as follows: Obtaining the temperature of the pump shaft seal during the first preset leakage risk period through a temperature sensor; Obtaining the viscosity of the corrosive medium transported by the water pump shaft seal during the first preset leakage risk period by means of a rotational viscometer; Obtaining, by means of a pH sensor, the pH value of the corrosive medium transported by the water pump shaft seal during a first preset leakage risk time period; Obtaining the pressure on the pump shaft seal during a first preset leakage risk period through a pressure sensor; The leakage data of the corrosive medium conveyed by the water pump shaft seal within the first preset time leakage risk period includes the temperature to which the water pump shaft seal is subjected, the viscosity of the corrosive medium conveyed by the water pump shaft seal, the pH value of the corrosive medium conveyed by the water pump shaft seal, and the pressure to which the water pump shaft seal is subjected; Obtaining a leakage assessment index for the water pump shaft seal conveying corrosive media within the first preset time leakage risk period based on the leakage data of the water pump shaft seal conveying corrosive media within the first preset time leakage risk period; The specific process of calculating the water pump shaft seal sealing evaluation index at the second preset time water pump shaft seal sealing detection point is as follows: The temperature of the water pump shaft seal at the water pump shaft seal sealing detection point at the second preset time is obtained by the temperature sensor; obtaining the vibration amplitude of the water pump shaft seal at the water pump shaft seal sealing detection point at the second preset time through the MEMS accelerometer; Obtain the pump shaft seal runout at the second preset time pump shaft seal sealing test point through a dial indicator; The water pump shaft seal sealing data at the water pump shaft seal sealing detection point at the second preset time includes the temperature of the water pump shaft seal, the vibration amplitude of the water pump shaft seal and the shaft runout of the water pump shaft seal; Obtaining a water pump shaft seal sealing evaluation index based on the water pump shaft seal sealing data within the water pump shaft seal sealing detection point at the second preset time; The specific process of calculating the water pump shaft seal operation efficiency evaluation index at the third preset time water pump shaft seal operation efficiency detection point is as follows: Obtain the pump shaft seal runout at the third preset time pump shaft seal operation efficiency detection point through a dial indicator; The pump performance test bench is used to obtain the head of the pump shaft seal operating efficiency at the third preset time pump shaft seal operating efficiency detection point; The water pump shaft seal speed at the third preset time water pump shaft seal operation efficiency detection point is obtained through the speed sensor; The temperature of the water pump shaft seal at the water pump shaft seal operation efficiency detection point at the third preset time is obtained by the temperature sensor; The pressure on the pump shaft seal at the third preset time pump shaft seal operation efficiency detection point is obtained by a pressure sensor; The water pump shaft seal operation efficiency data within the water pump shaft seal operation efficiency detection point at the third preset time includes the water pump shaft seal shaft runout, the water pump shaft seal operation efficiency head, the water pump shaft seal speed, the temperature borne by the water pump shaft seal, and the pressure borne by the water pump shaft seal; The water pump shaft seal operation efficiency evaluation index is obtained by analyzing the water pump shaft seal operation efficiency data within the water pump shaft seal operation efficiency detection point at the third preset time.

2. The water pump shaft seal leakage detection and alarm method according to claim 1, characterized in that: The specific process of obtaining the comprehensive detection and evaluation index of the water pump shaft seal leakage is as follows: The comprehensive detection evaluation index of water pump shaft seal leakage is obtained through comprehensive analysis of the water pump shaft seal leakage evaluation index of corrosive media conveying, the water pump shaft seal sealing evaluation index and the water pump shaft seal operation efficiency evaluation index.

3. The water pump shaft seal leakage detection and alarm method according to claim 1, characterized in that: The specific process of comparing and analyzing the water pump shaft seal leakage comprehensive detection evaluation index with the preset water pump shaft seal leakage comprehensive detection evaluation index threshold is as follows: The water pump shaft seal leakage comprehensive detection evaluation index predicted safety threshold is extracted from the water pump shaft seal database, and the water pump shaft seal leakage comprehensive detection evaluation index is compared with the water pump shaft seal leakage comprehensive detection evaluation index predicted safety threshold. If the water pump shaft seal leakage comprehensive detection evaluation index is greater than or equal to the water pump shaft seal leakage comprehensive detection evaluation index predicted safety threshold, the water pump shaft seal leakage detection risk level is low risk and the alarm mechanism is not triggered. If the water pump shaft seal leakage comprehensive detection evaluation index is less than the water pump shaft seal leakage comprehensive detection evaluation index predicted safety threshold, the water pump shaft seal leakage detection risk level is high risk and the alarm mechanism is triggered.

4. The water pump shaft seal leakage detection and alarm method according to claim 1, characterized in that: The optimization of the comprehensive performance of the water pump shaft seal specifically includes: If the pump shaft seal triggers the alarm mechanism, relevant personnel are notified and information is sent, including cleaning the pump shaft seal leakage area and repairing the equipment parts damaged by the pump shaft seal; If the pump shaft seal does not trigger the alarm mechanism but the pump operating efficiency is lower than the pump operating efficiency threshold, relevant personnel are notified to remove the blocked sediment and impurities.

5. The water pump shaft seal leakage detection and alarm method according to claim 4, characterized in that: The optimization of the comprehensive performance of the water pump shaft seal also includes: If the water pump shaft seal conveying corrosive medium leakage assessment index is higher than the first threshold value of the water pump shaft seal conveying corrosive medium leakage assessment index, the monitoring frequency of the water pump shaft seal is increased; If the water pump shaft seal sealing evaluation index is lower than the water pump shaft seal sealing evaluation index second threshold, adding an additional sealing layer around the water pump shaft seal; If the water pump shaft seal operation efficiency evaluation index is lower than the water pump shaft seal operation efficiency evaluation index third threshold value, replace the water pump shaft seal filter element and regularly maintain the water pump shaft seal.

6. The water pump shaft seal leakage detection and alarm method according to claim 5, characterized in that: The optimization of the comprehensive performance of the water pump shaft seal also includes: If the pump shaft seal leakage detection risk level is high risk and exceeds the preset alarm times within the preset warning time period, the pump will be stopped immediately and relevant personnel will be notified to replace the pump.

7. A water pump shaft seal leakage detection and alarm device, using the water pump shaft seal leakage detection and alarm method according to any one of claims 1 to 6, characterized in that: It includes a module for collecting and processing raw data of water pump shaft seals, a module for evaluating the leakage index of water pump shaft seals conveying corrosive media, a module for evaluating the sealing performance of water pump shaft seals, a module for evaluating the operating efficiency of water pump shaft seals, a module for comprehensively detecting and evaluating the leakage of water pump shaft seals, and a module for optimizing the comprehensive performance of water pump shaft seals: The module for collecting and processing raw data of water pump shaft seal is used to collect and process raw data of water pump shaft seal in real time through sensors to obtain water pump shaft seal data; Water pump shaft seal conveying corrosive medium leakage assessment index module: used to calculate the water pump shaft seal conveying corrosive medium leakage assessment index in a first preset time period of leakage risk based on the water pump shaft seal conveying corrosive medium leakage data; A water pump shaft seal sealing evaluation index module: used to calculate the water pump shaft seal sealing evaluation index of the water pump shaft seal sealing detection point at the second preset time through the water pump shaft seal sealing data; A water pump shaft seal operation efficiency evaluation index module: used to calculate the water pump shaft seal operation efficiency evaluation index of the water pump shaft seal operation efficiency detection point at the third preset time through the water pump shaft seal operation efficiency data; Water pump shaft seal leakage comprehensive detection and evaluation index module: used for comprehensive analysis to obtain the water pump shaft seal leakage comprehensive detection and evaluation index; Module for optimizing the comprehensive performance of the water pump shaft seal: used to compare and analyze the comprehensive detection and evaluation index of the water pump shaft seal leakage with the preset comprehensive detection and evaluation index threshold of the water pump shaft seal leakage, and optimize the comprehensive performance of the water pump shaft seal.

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