Multi-parameter monitoring water guide intelligent drainage protection device

Abstract

The utility model discloses a water guide intelligent drainage protection device of many parameter monitoring belongs to water conservancy equipment monitoring technical field. Including pump body, pump shaft, water guide bearing and fixed oil basin, still include many parameter monitoring module and control execution module, many parameter monitoring module contains water level pressure sensor, triaxial temperature vibration integrated sensor, voiceprint detection sensor, oil level sensor and lubricating oil oil product detection sensor, realize real -time monitoring to water guide bearing leakage water level, bearing temperature vibration, pump shaft voiceprint, lubricating oil oil level and oil quality through many parameter monitoring module, replace traditional artificial regular patrol, avoided the time interval blind area of artificial patrol, can capture abnormal parameter change in first time, realize automatic start -stop and adjustment of self -priming pump, electromagnetic control valve through PLC control system, need not manual operation, solved " drainage not in time " " operation lag " problem thoroughly, guarantees unit to be responded in the fault budding stage.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy equipment monitoring technology, and in particular to a water-conducting intelligent drainage protection device with multi-parameter monitoring. Background Technology

[0002] With the rapid development of my country's water conservancy industry, the operation and management mode of water conservancy projects and supporting equipment is transforming from traditional manual operation and experience-driven to automated, unmanned, and intelligent high-efficiency management. In core equipment such as water pumping stations, Babbitt alloy thin oil lubricated bearings are commonly used in the pumping system. The stable operation of this type of bearing is highly dependent on the lubrication and heat dissipation performance of the lubricating oil. The quality of the lubricating oil directly determines the safe and stable operation of the entire unit. If the lubricating oil has problems such as emulsification or contamination, it will directly lead to bearing lubrication failure, causing serious wear failures, and even causing the unit to shut down.

[0003] During actual operation, the dynamic and static rings of the water-guided bearing will wear down due to long-term operation. When the wear exceeds a threshold, its sealing performance will significantly decrease, leading to water leakage inside the water-guided bearing. Since the distance from the bottom of the water-guided bearing to the top of the fixed oil pan is approximately 58cm, if the leaked water level continues to rise and exceeds this safe distance to flow into the oil pan, it will directly cause the lubricating oil to emulsify, completely losing its lubrication and heat dissipation functions, causing irreversible damage to the unit. Therefore, timely and accurate drainage of the water-guided bearing is a crucial link in ensuring the safe operation of the unit.

[0004] However, the drainage systems for water-guided bearings in the industry still mainly rely on manual inspection and operation. Staff need to periodically check the leakage level of the water-guided bearings on-site. Only when the leakage is small can natural drainage be achieved through the ring pipe. Once the leakage increases to the point that the signal pipe overflows, the operator needs to manually start the self-priming pump to drain the water. This traditional operation method has significant drawbacks: on the one hand, manual inspections are time-sensitive and cannot achieve real-time monitoring. They are prone to delayed drainage due to untimely inspections, which can lead to malfunctions such as oil emulsification. On the other hand, manual judgment of water level and operation of self-priming pumps lack precise standards, which can easily lead to over-drainage (causing dry wear of the bearings) or under-drainage (failing to stop the water level from rising), seriously affecting the operating efficiency and reliability of the unit. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the existing water-guided bearing drainage system still mainly relies on manual inspection and operation, which is prone to drainage delays and over-drainage or under-drainage due to untimely inspections. Therefore, a multi-parameter monitoring intelligent drainage protection device for water guide bearings is proposed.

[0006] The technical solution of this utility model is as follows: a multi-parameter monitoring water-guided intelligent drainage protection device, including a pump body, a pump shaft, a water-guided bearing, and a fixed oil pan. The water-guided bearing and the fixed oil pan are respectively located at the bottom of the pump shaft. The fixed oil pan is located outside the water-guided bearing. Both the water-guided bearing and the fixed oil pan are located in the bearing socket of the guide vane body. It also includes a multi-parameter monitoring module and a control execution module. The multi-parameter monitoring module includes a water level and pressure sensor, a triaxial temperature and vibration integrated sensor, an acoustic fingerprint detection sensor, an oil level sensor, and a lubricating oil quality detection sensor. The control execution module includes a PLC control system, a self-priming pump, and an electromagnetic control valve. The PLC control system is electrically connected to the multi-parameter monitoring module, the self-priming pump, and the electromagnetic control valve.

[0007] The water level pressure sensor has a range of 0-50cm and is located on the lower part of the inner side of the bearing socket.

[0008] An impeller shaft is connected to the bottom of the pump body. The impeller shaft is connected to the blades through the impeller hub. The triaxial temperature and vibration integrated sensor is installed on the impeller hub to collect triaxial vibration acceleration and temperature.

[0009] The voiceprint detection sensor is mounted on a bracket on the side of the pump shaft.

[0010] The pump body is equipped with an oil inlet / outlet pipe, and an oil cup is located on the outside of the pump body. The oil level sensor is located inside the oil cup.

[0011] The lubricating oil quality detection sensor probe extends into the lower part of the fixed oil basin, and the detection parameters include viscosity, moisture content and contamination level.

[0012] This utility model has the following beneficial effects: 1. The multi-parameter monitoring module enables real-time monitoring of water level leakage in the water guide bearing, bearing temperature and vibration, pump shaft noise, lubricating oil level and quality, replacing traditional manual periodic inspections and avoiding blind spots in manual inspection intervals. It can capture abnormal parameter changes immediately. At the same time, the PLC control system enables automatic start-up, shutdown and adjustment of the self-priming pump and electromagnetic control valve without manual operation, completely solving the problems of "untimely drainage" and "delayed operation", ensuring that the unit can be responded to at the initial stage of faults.

[0013] 2. Integrating water level and pressure sensors, triaxial temperature and vibration sensors, acoustic fingerprint sensors, oil level sensors, and lubricating oil quality sensors, it achieves full-dimensional monitoring of "water level - bearing condition - pump shaft condition - lubricating oil condition". It can prevent water from entering the fixed oil pan through the water level sensor, predict mechanical failures of bearings and pump shafts through temperature, vibration, and acoustic fingerprint sensors, and ensure lubricating oil efficiency through oil level and oil quality sensors. It avoids the limitations of single parameter monitoring and greatly improves the comprehensiveness and accuracy of unit fault early warning. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This utility model Figure 1 An enlarged schematic diagram of the structure at point A in the middle. Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure at point B. Figure 4 This utility model Figure 1 Enlarged schematic diagram of the structure at point C; In the diagram: 1. Pump body; 2. Pump shaft; 3. Water level and pressure sensor; 4. Triaxial temperature and vibration sensor; 5. Acoustic fingerprint sensor; 6. Oil level sensor; 7. Lubricating oil quality sensor; 8. Water guide bearing; 9. Fixed oil pan; 10. Bearing socket; 11. Oil inlet and outlet pipes; 12. Oil cup; 13. Impeller shaft; 14. Impeller hub. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-4 A multi-parameter monitoring water-guided intelligent drainage protection device includes a pump body 1, a pump shaft 2, a water guide bearing 8, and a fixed oil pan 9. The water guide bearing 8 and the fixed oil pan 9 are respectively located at the bottom of the pump shaft 2. The fixed oil pan 9 is located outside the water guide bearing 8. Both the water guide bearing 8 and the fixed oil pan 9 are located in the bearing socket 10 of the guide vane body. It also includes a multi-parameter monitoring module and a control execution module, which are connected by circuits to realize data transmission and command execution, together replacing traditional manual operation and realizing automated monitoring and protection.

[0017] The multi-parameter monitoring module is used to collect key parameters of the water guide bearing and its surroundings in real time, including water level and pressure sensor 3, triaxial temperature and vibration integrated sensor 4, acoustic fingerprint sensor 5, oil level sensor 6, and lubricating oil quality sensor 7. The installation position, parameter range, and functional design of each sensor are as follows: The range of the water level pressure sensor 3 is set to 0-50cm and is located in the lower part of the inner side of the bearing housing. The reason for choosing this installation position and range is that the lower part of the inner side of the bearing housing is the area where leakage water first accumulates. It can capture the changes in leakage water level most quickly and accurately, avoiding detection lag due to the installation position being too high. The range of 0-50cm covers the key water level range within the 58cm safe distance from the bottom of the water guide bearing to the top of the fixed oil basin. It can monitor the warning water level of "drainage needs to be started" without the detection accuracy being insufficient when the water level changes due to the range being too large.

[0018] The water level and pressure sensor 3 detects the water level and pressure signal of the water leakage inside the water guide bearing in real time, and converts the signal into an electrical signal and transmits it to the PLC control system as the core basis for judging the start and stop of the self-priming pump.

[0019] An impeller shaft 13 is connected to the lower part of the pump body 1, and the impeller shaft 13 is connected to the blades through the impeller hub 14. The triaxial temperature and vibration sensor 4 is installed on the impeller hub and can simultaneously collect vibration acceleration in the X, Y, and Z axes as well as the bearing surface temperature, so as to realize comprehensive monitoring of the bearing's operating status.

[0020] The triaxial temperature and vibration integrated sensor 4 uses vibration acceleration data to determine whether there are mechanical faults such as abnormal wear, eccentricity, or looseness in the bearing, and uses temperature data to determine whether there are problems such as insufficient lubrication or overload. The data is transmitted to the PLC control system in real time to provide a basis for adjusting the pump speed of the self-priming pump and for fault early warning.

[0021] The acoustic signature sensor 5 is mounted on the side bracket of the pump shaft 2. The mounting position of the side bracket must meet the requirement of "close to the pump shaft but not in contact" to ensure that the sensor can clearly collect the acoustic signature signal when the pump shaft is running (such as uniform acoustic signature during normal operation and abnormal noise during abnormal operation), while avoiding sensor wear or signal interference caused by direct contact with the pump shaft. The height of the bracket must be flush with the central axis of the pump shaft to reduce the attenuation on the acoustic signature propagation path and ensure the authenticity of the collected signal.

[0022] The acoustic signature sensor 5 analyzes the frequency and amplitude changes of the pump shaft acoustic signature to determine whether there are faults such as bending, wear, or misalignment of the pump shaft. For example, the presence of irregular high-frequency signals in the acoustic signature may indicate that the pump shaft is off-center. It complements the monitoring data of the triaxial temperature and vibration integrated sensor, further improving the accuracy of mechanical fault diagnosis.

[0023] The pump body 1 is provided with an oil filling and draining pipe 11. The oil filling and draining pipe 11 is located on the outside of the pump body 1 and is provided with an oil cup 12. The oil level sensor 6 is located inside the oil cup 12.

[0024] The oil level sensor 6 monitors the level of lubricating oil in the fixed oil pan in real time. When the oil level is lower than the preset lower limit, it sends a signal to the PLC control system to trigger the oil replenishment operation, preventing insufficient lubrication of the bearing due to low oil level.

[0025] The probe of the lubricating oil quality detection sensor 7 extends into the lower part of the fixed oil pan. The reason for choosing the lower part of the fixed oil pan is that there may be floating oil and impurities in the upper part of the fixed oil pan, which cannot reflect the overall quality of the lubricating oil. The lubricating oil in the lower part can better represent the true state of the lubricating oil in the fixed oil pan. The sensor can detect three core parameters of the lubricating oil: viscosity, water content and contamination. Viscosity directly affects the lubrication effect, excessive water content will cause oil emulsification, and contamination reflects the content of impurities in the oil.

[0026] The lubricating oil quality detection sensor 7 monitors the quality status of the lubricating oil in real time. When any parameter exceeds the preset threshold, it sends an alarm signal to the PLC control system to remind maintenance personnel to replace the lubricating oil and avoid bearing failure due to oil deterioration.

[0027] The control execution module is the core of realizing the "monitoring-judgment-execution" closed loop, including the PLC control system, self-priming pump and solenoid control valve.

[0028] The PLC control system is electrically connected to the multi-parameter monitoring module, the self-priming pump, and the solenoid control valve via wires or wireless communication modules. The parameter monitoring module transmits the collected real-time data to the PLC. After analyzing the data, the PLC sends start / stop or adjustment commands to the self-priming pump and the solenoid control valve.

[0029] The PLC control system can comprehensively verify the monitoring data from various sensors. For example, when the water level sensor shows a rise in water level, it can combine the moisture content data from the oil detection sensor to determine whether there is a real leak, avoiding false judgments caused by sensor malfunctions, and realizing automatic control based on preset logic. When the water level pressure sensor 3 detects a water level ≥ 5cm, the PLC determines that the leakage has reached the threshold for active drainage to prevent the water level from rising further beyond the 58cm safe distance and flowing into the fixed oil basin. It then sends a start command to the self-priming pump to start drainage. When the water level drops to ≤ 2cm, the PLC determines that the water level has returned to the safe range and sends a stop command to prevent excessive drainage from causing dry wear of the bearing.

[0030] When the oil level sensor 6 detects that the oil level is lower than the preset lower limit, the PLC determines that the lubricating oil is insufficient and then sends an opening command to the solenoid control valve. The solenoid control valve is connected to the lubricating oil storage tank. After opening, it replenishes lubricating oil to the fixed oil pan until the oil level reaches the normal range. Then, the PLC sends a closing command to stop replenishing oil.

[0031] The starting parameters of the self-priming pump can be dynamically adjusted in conjunction with vibration monitoring data. When the triaxial temperature and vibration integrated sensor 4 detects that the vibration acceleration exceeds the threshold, the PLC determines that the water guide bearing may have abnormal wear or jamming. At this time, it will send a "increase pump speed" command to the self-priming pump. By increasing the pump speed, the drainage efficiency is accelerated, the residence time of the leaked water inside the bearing is reduced, and the damage of water to the bearing and lubricating oil is reduced. At the same time, the PLC will upload the status information of "excessive vibration and increased pump speed" to the remote monitoring platform to remind maintenance personnel to troubleshoot the fault in time.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-parameter monitoring water-guided intelligent drainage protection device, comprising a pump body (1), a pump shaft (2), a water-guided bearing (8), and a fixed oil pan (9), wherein the water-guided bearing (8) and the fixed oil pan (9) are respectively disposed at the bottom of the pump shaft (2), the fixed oil pan (9) is located outside the water-guided bearing (8), and both the water-guided bearing (8) and the fixed oil pan (9) are located within the bearing socket (10) of the guide vane body; characterized in that: It also includes a multi-parameter monitoring module and a control execution module; The multi-parameter monitoring module includes a water level and pressure sensor (3), a triaxial temperature and vibration integrated sensor (4), a soundprint detection sensor (5), an oil level sensor (6), and a lubricating oil quality detection sensor (7). The control execution module includes a PLC control system, a self-priming pump, and an electromagnetic control valve. The multi-parameter monitoring module, the self-priming pump, and the electromagnetic control valve are electrically connected to the PLC control system.

2. The intelligent drainage protection device with multi-parameter monitoring according to claim 1, characterized in that, The water level pressure sensor (3) has a range of 0-50cm and is located on the lower inner side of the bearing socket (10).

3. The intelligent drainage protection device with multi-parameter monitoring according to claim 1, characterized in that, An impeller shaft (13) is connected to the lower part of the pump body (1), and the impeller shaft (13) is connected to the blades through the impeller hub (14). The triaxial temperature and vibration integrated sensor (4) is installed on the impeller hub (14) and is used to collect triaxial vibration acceleration and temperature.

4. The intelligent drainage protection device with multi-parameter monitoring according to claim 1, characterized in that, The voiceprint detection sensor (5) is mounted on the side bracket of the pump shaft (2).

5. The intelligent drainage protection device with multi-parameter monitoring according to claim 1, characterized in that, The probe of the lubricating oil detection sensor (7) extends into the lower part of the fixed oil pan.

6. The intelligent drainage protection device with multi-parameter monitoring according to claim 1, characterized in that, The pump body (1) is provided with an oil filling and draining pipe (11), and the oil filling and draining pipe (11) is located on the outside of the pump body (1) with an oil cup (12). The oil level sensor (6) is located inside the oil cup (12).

7. The intelligent drainage protection device for multi-parameter monitoring according to claim 1, characterized in that, The PLC control system is connected to the monitoring platform.

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