An online monitoring device for circulating lubricating oil in mechanical equipment

Abstract

This application relates to an online monitoring device for circulating lubricating oil in mechanical equipment, belonging to the technical field of lubrication monitoring for mechanical equipment. The device includes a pump body, an equipment body, and a control processor. By setting up an oil inlet pipe, an intermediate circulation pipe, and an oil outlet pipe, a closed-loop oil circuit can be formed, ensuring the circulation of lubricating oil within the equipment body. An oil inlet monitoring unit can monitor the initial state of the lubricating oil at the inlet. An oil inlet can also monitor changes in the oil within the intermediate circulation pipe. An oil outlet monitoring unit can monitor the state of the returning oil at the outlet. Through three-stage linkage, the entire life cycle of the lubricating oil ("in-circulation-out") can be covered, avoiding monitoring blind spots. By setting up a first and second bypass pipe, along with a first and second control valve to cut off the lubricating oil flow, static monitoring can be performed during monitoring, thereby improving data accuracy.

Description

Technical Field

[0001] This application relates to lubrication monitoring of mechanical equipment, and more particularly to an online monitoring device for circulating lubricating oil in mechanical equipment. Background Technology

[0002] Currently, the monitoring of lubrication systems in mechanical equipment mainly relies on periodic manual inspections and offline oil analysis. This method is lagging and cannot reflect the real-time operating status of the lubricating oil. With the development of industrial automation, the demand for real-time monitoring of lubrication systems is increasing, especially in high-precision gas separation equipment, where poor lubrication can lead to accelerated wear, reduced efficiency, or even shutdown.

[0003] In recent years, automated lubrication monitoring technology has been gradually applied to some high-end equipment, but problems such as single monitoring points and insufficient data accuracy still exist. Common lubrication monitoring methods in existing technologies include: (1) single oil pressure sensor monitoring, which can only reflect the pressure status of the lubrication system and cannot comprehensively assess the quality of lubricating oil; (2) offline oil sampling and analysis, which monitors wear particles and physicochemical indicators in lubricating oil through laboratory testing, but the cycle is long and the cost is high; (3) lubrication system monitoring based on flow meters, which can only monitor the flow rate of lubricating oil and cannot identify oil deterioration or contamination. Each of these methods has its limitations. For example, the data from single sensor monitoring is one-sided, the timeliness of offline analysis is poor, and flow monitoring cannot cover changes in oil quality.

[0004] As can be seen from the above, the main drawback of the existing technology is that the monitoring dimension is single, and blind spots are easy to occur. It is difficult to fully and timely reflect the actual operating status of the lubrication system, which can easily lead to delayed early warning of equipment lubrication failure. In order to solve the above problems, an online monitoring device for circulating lubricating oil of mechanical equipment is proposed. Utility Model Content

[0005] The purpose of this application is to provide an online monitoring device for circulating lubricating oil in mechanical equipment, which has the advantages of multi-dimensional monitoring functions. It solves the problems of existing technologies, such as single monitoring dimensions, easy occurrence of monitoring blind spots, difficulty in comprehensively and timely reflecting the actual operating status of the lubrication system, and easy delay in early warning of equipment lubrication failure.

[0006] The online monitoring device for circulating lubricating oil of mechanical equipment provided in this application adopts the following technical solution: it includes a pump body, an equipment body and a control processor. The output end of the pump body is fixedly connected to an oil inlet pipe. An intermediate circulation pipe is provided inside the equipment body. The output end of the oil inlet pipe is fixedly connected to the input end of the intermediate circulation pipe. The input end of the pump body is fixedly connected to an oil outlet pipe. The input end of the oil outlet pipe is fixedly connected to the output end of the intermediate circulation pipe. The oil inlet pipe is provided with a first branch pipe, the first branch pipe is provided with a first monitoring pipe, and the first monitoring pipe is equipped with an oil inlet monitoring unit. The intermediate circulation pipe is provided with a second branch pipe, the second branch pipe is provided with a second monitoring pipe, and the second monitoring pipe is equipped with an intermediate monitoring unit. The oil outlet pipe is provided with a third monitoring pipe, and the third monitoring pipe is equipped with an oil outlet monitoring unit. The first branch pipe and the second branch pipe are respectively provided with a first control valve and a second control valve. The control processor is electrically connected to the oil inlet monitoring unit, the intermediate monitoring unit, and the oil outlet monitoring unit through a signal line. By adopting the above technical solution, a closed-loop oil circuit can be formed by setting up an oil inlet pipe, an intermediate circulation pipe, and an oil outlet pipe, ensuring that the lubricating oil circulates within the equipment body. By setting up an oil inlet monitoring unit, the initial state of the lubricating oil at the inlet can be monitored. By setting up an oil inlet, the changes in the oil inside the intermediate circulation pipe can be monitored. By setting up an oil outlet monitoring unit, the state of the backflowing oil at the outlet can be monitored. Through three-level linkage, the entire life cycle state of the lubricating oil "in-circulation-out" can be covered, avoiding monitoring blind spots. By setting up a first branch pipe and a second branch pipe, and cooperating with the first control valve and the second control valve to cut off the lubricating oil, static monitoring can be performed during monitoring, thereby improving data accuracy.

[0007] Preferably, the oil inlet monitoring unit is equipped with a first temperature sensor, a viscosity sensor and an impurity monitor. By adopting the above technical solution, the oil inlet monitoring unit is equipped with a first temperature sensor, a viscosity sensor, and an impurity monitor. Under the action of the first temperature sensor, the oil temperature can be monitored in real time. Under the action of the viscosity sensor, insufficient oil supply caused by increased viscosity at low temperatures and oil film rupture caused by decreased viscosity at high temperatures can be avoided. At the same time, under the action of the impurity monitor, external contaminants can be identified. By using the oil inlet data as a reference value and comparing it with intermediate data and oil outlet data, the root cause of internal deterioration of the equipment can be quickly located.

[0008] Preferably, the intermediate monitoring unit is equipped with a microfluidic acid value sensor, an ultrasonic flow meter, a dielectric constant sensor, and a second temperature sensor. By adopting the above technical solution, the intermediate monitoring unit is equipped with a microfluidic acid value sensor, an ultrasonic flow meter, and a dielectric constant sensor. Under the action of the microfluidic acid value sensor, acidic substances generated by the oxidation of lubricating oil can be monitored. Under the action of the dielectric constant sensor, changes in moisture, metal particles, and acid value can be comprehensively reflected. Under the action of the ultrasonic flow meter, the circulating oil volume can be monitored. A decrease in flow rate indicates filter blockage or pipeline leakage, thus avoiding equipment overheating due to insufficient oil supply.

[0009] Preferably, the oil outlet monitoring unit is equipped with a wear particle counter and a pressure sensor. By adopting the above technical solution, the oil outlet monitoring unit is equipped with a wear particle counter and a pressure sensor. Under the action of the pressure sensor, the oil resistance of the lubricating oil after use can be monitored. Under the action of the wear particle counter, metal wear particles can be classified and counted. Then, combined with the pressure sensor to monitor the return oil resistance, the faulty parts can be accurately located.

[0010] Preferably, the two ends of the first monitoring pipeline are respectively connected to the inlet end and the outlet end of the first branch pipeline, and the oil inlet monitoring unit is disposed inside the first monitoring pipeline; By adopting the above technical solution, the lubricating oil enters the monitoring pipeline through the bypass and then returns to the main pipeline, avoiding interruption of the main oil circuit and ensuring continuous operation of the equipment. At the same time, the independent monitoring pipeline can reduce the interference of oil flow fluctuations on the sensor and improve data reliability.

[0011] Preferably, the two ends of the second monitoring pipe are respectively connected to the inlet end and the outlet end of the second branch pipe, and the intermediate monitoring unit is disposed inside the second monitoring pipe; By adopting the above technical solution, the lubricating oil is connected to the second bypass pipeline through the second monitoring pipeline and then returns to the main pipeline after entering the monitoring pipeline through the bypass, which can avoid interruption of the intermediate oil circuit and ensure continuous operation of the equipment.

[0012] Preferably, the two ends of the third monitoring pipe are respectively connected to the inlet end and the outlet end of the oil outlet pipe, and the oil outlet monitoring unit is disposed inside the third monitoring pipe; By adopting the above technical solution, and connecting the oil outlet monitoring unit to the oil outlet pipe, it is possible to collect pressure change data in the oil pipe in real time, promptly detect abnormalities in the oil circuit, and accurately measure the state of the lubricating oil inside the oil outlet pipe.

[0013] Preferably, both the first control valve and the second control valve are solenoid valves, and are electrically connected to the control processor respectively; By adopting the above technical solution, and through the control processor being electrically connected to multiple control valves, the opening and closing states of each solenoid valve can be automatically adjusted according to preset conditions or real-time data, thereby achieving precise control of the lubricating oil flow path. At the same time, the rapid response characteristics of the solenoid valves ensure that the oil circuit can be cut off or opened in time in emergency situations, further enhancing the safety and stability of equipment operation.

[0014] In summary, this application includes at least one of the following beneficial technical effects: This online monitoring device for circulating lubricating oil in mechanical equipment forms a closed-loop oil circuit by setting up an oil inlet pipe, an intermediate circulation pipe, and an oil outlet pipe. This ensures that the lubricating oil circulates within the equipment. By setting up an oil inlet monitoring unit, the initial state of the lubricating oil at the inlet can be monitored. By setting up an oil inlet, the changes in the oil inside the intermediate circulation pipe can be monitored. By setting up an oil outlet monitoring unit, the state of the backflowing oil at the outlet can be monitored. Through three-level linkage, the entire life cycle of the lubricating oil "in-circulation-out" can be covered, avoiding monitoring blind spots. By setting up a first branch pipe and a second branch pipe, and cooperating with a first control valve and a second control valve to cut off the lubricating oil, static monitoring can be performed during monitoring, thereby improving data accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a structural layout diagram of this application; Figure 3 This is a structural block diagram of the oil inlet monitoring unit in this application; Figure 4 This is a structural block diagram of the intermediate monitoring unit in this application; Figure 5 This is a structural block diagram of the oil outlet monitoring unit in this application.

[0016] In the picture: 1. Pump body; 2. Oil inlet pipe; 21. First branch pipe; 22. First monitoring pipe; 23. First control valve; 24. Oil inlet monitoring unit; 2401. First temperature sensor; 2402. Viscosity sensor; 2403. Impurity monitor; 3. Equipment body; 4. Intermediate circulation pipe; 41. Second bypass pipe; 42. Second monitoring pipe; 43. Second control valve; 44. Intermediate monitoring unit; 4401. Microfluidic acid value sensor; 4402. Ultrasonic flow meter; 4403. Dielectric constant sensor; 4404. Second temperature sensor; 5. Oil outlet pipe; 51. Third monitoring pipe; 52. Oil outlet monitoring unit; 5201. Wear particle counter; 5202. Pressure sensor; 6. Control processor. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0018] Example 1: An online monitoring device for circulating lubricating oil in mechanical equipment, referring to... Figure 1 and Figure 2 It includes a pump body 1, an equipment body 3 and a control processor 6. The output end of the pump body 1 is fixedly connected to an oil inlet pipe 2. An intermediate circulation pipe 4 is set inside the equipment body 3. The output end of the oil inlet pipe 2 is fixedly connected to the input end of the intermediate circulation pipe 4. The input end of the pump body 1 is fixedly connected to an oil outlet pipe 5. The input end of the oil outlet pipe 5 is fixedly connected to the output end of the intermediate circulation pipe 4. A first bypass pipe 21 is provided on the oil inlet pipe 2, and a first monitoring pipe 22 is provided on the first bypass pipe 21. An oil inlet monitoring unit 24 is installed in the first monitoring pipe 22. A second bypass pipe 41 is provided on the intermediate circulation pipe 4, and a second monitoring pipe 42 is provided on the second bypass pipe 41. An intermediate monitoring unit 44 is installed in the second monitoring pipe 42. A third monitoring pipe 51 is provided on the oil outlet pipe 5, and an oil outlet monitoring unit 52 is installed in the third monitoring pipe 51. A first control valve 23 and a second control valve 43 are respectively provided on the first bypass pipe 21 and the second bypass pipe 41. The control processor 6 is electrically connected to the oil inlet monitoring unit 24, the intermediate monitoring unit 44, and the oil outlet monitoring unit 52 via signal lines. By setting up the oil inlet pipe 2, intermediate circulation pipe 4, and oil outlet pipe 5, a closed-loop oil circuit can be formed, ensuring that the lubricating oil circulates within the equipment body 3. By setting up the oil inlet monitoring unit 24, the initial state of the lubricating oil at the oil inlet can be monitored. By setting up the oil inlet, the changes in the oil inside the intermediate circulation pipe 4 can be monitored. By setting up the oil outlet monitoring unit 52, the state of the backflow oil at the oil outlet can be monitored. Through three-level linkage, the entire life cycle state of the lubricating oil "in-circulation-out" can be covered, avoiding monitoring blind spots. By setting up the first branch pipe 21 and the second branch pipe 41, and cooperating with the first control valve 23 and the second control valve 43 to cut off the lubricating oil, static monitoring can be performed during monitoring, thereby improving data accuracy.

[0019] Please see Figure 3 , Figure 4 and Figure 5The inlet monitoring unit 24 is equipped with a first temperature sensor 2401, a viscosity sensor 2402, and an impurity monitor 2403. The first temperature sensor 2401 monitors the oil temperature in real time. The viscosity sensor 2402 prevents insufficient oil supply due to increased viscosity at low temperatures and oil film rupture due to decreased viscosity at high temperatures. The impurity monitor 2403 identifies external contaminants. By comparing the inlet data with intermediate and outlet data, the root cause of internal equipment degradation can be quickly located. The intermediate monitoring unit 44 is equipped with a microfluidic acid value sensor 4401, an ultrasonic flow meter 4402, a dielectric constant sensor 4403, and a second temperature sensor 4404. The intermediate monitoring unit 44 is equipped with a microfluidic acid value sensor 4401, an ultrasonic flow meter 4402, a dielectric constant sensor 4403, and a second temperature sensor 4404. The flow meter 4402 and dielectric constant sensor 4403, under the action of the microfluidic acid value sensor 4401, can monitor the acidic substances generated by the oxidation of lubricating oil. Under the action of the dielectric constant sensor 4403, they can comprehensively reflect changes in moisture, metal particles, and acid value. Under the action of the ultrasonic flow meter 4402, they can monitor the circulating oil volume. A decrease in flow indicates filter blockage or pipeline leakage, preventing equipment overheating due to insufficient oil supply. The oil outlet monitoring unit 52 is equipped with a wear particle counter 5201 and a pressure sensor 5202. Through the wear particle counter 5201 and pressure sensor 5202 inside the oil outlet monitoring unit 52, the oil resistance of the lubricating oil after use can be monitored under the action of the pressure sensor 5202. Under the action of the wear particle counter 5201, metal wear particles can be classified and counted. Then, combined with the pressure sensor 5202, the return oil resistance is monitored. Among them, a sudden drop in pressure is close to leakage, and a rise in pressure is close to blockage, which can accurately locate the faulty component.

[0020] Please see Figure 1The first monitoring pipe 22 is connected to the inlet and outlet of the first branch pipe 21 at both ends. The oil inlet monitoring unit 24 is located inside the first monitoring pipe 22 and is connected to the first branch pipe 21 through the first monitoring pipe 22. Lubricating oil enters the monitoring pipe through the bypass and then returns to the main line, avoiding interruption of the main oil line and ensuring continuous operation of the equipment. At the same time, the independent monitoring pipe can reduce the interference of oil flow fluctuations on the sensor and improve data reliability. The second monitoring pipe 42 is connected to the inlet and outlet of the second branch pipe 41 at both ends. The intermediate monitoring unit 44 is located inside the second monitoring pipe 42 and is connected to the second branch pipe 41 through the second monitoring pipe 42. Lubricating oil enters the monitoring pipe through the bypass and then returns to the main line, avoiding interruption of the intermediate oil line and ensuring continuous operation of the equipment. The third monitoring unit 2 ... The two ends of the pipeline 51 are connected to the inlet and outlet ends of the oil outlet pipe 5, respectively. The oil outlet monitoring unit 52 is installed inside the third monitoring pipeline 51 and is connected to the oil outlet pipe 5 through the oil outlet monitoring unit 52. It can collect pressure change data in the oil pipe in real time, detect abnormalities in the oil circuit in time, and accurately measure the state of lubricating oil inside the oil outlet pipe 5. The first control valve 23 and the second control valve 43 are both solenoid valves and are electrically connected to the control processor 6. Through the control processor 6, which is electrically connected to multiple control valves, the opening and closing states of each solenoid valve can be automatically adjusted according to preset conditions or real-time data, thereby achieving precise control of the lubricating oil flow path. At the same time, the rapid response characteristics of the solenoid valves ensure that the oil circuit can be cut off or opened in time in emergency situations, further enhancing the safety and stability of equipment operation.

[0021] The implementation principle of this application embodiment is as follows: In use, the oil inlet monitoring unit 24, the intermediate monitoring unit 44 and the oil outlet monitoring unit 52 are respectively installed on the surface of the first monitoring pipe 22, the second monitoring pipe 42 and the third monitoring pipe 51. After installation, the oil inlet monitoring unit 24, the intermediate monitoring unit 44 and the oil outlet monitoring unit 52 are started by the control processor 6, so that the circulating lubricating oil can be monitored online. With the help of the first temperature sensor 2401, viscosity sensor 2402 and impurity monitor 2403 inside the oil inlet monitoring unit 24, the oil temperature can be monitored in real time, which can avoid insufficient oil supply caused by increased viscosity at low temperature and oil film rupture caused by decreased viscosity at high temperature. External contaminants can be identified. By using the oil inlet data as a reference value and comparing it with intermediate data and oil outlet data, the root cause of internal equipment deterioration can be quickly located. Under the action of the microfluidic acid value sensor 4401, ultrasonic flow meter 4402, dielectric constant sensor 4403 and second temperature sensor 4404 inside the intermediate monitoring unit 44, the acidic substances generated by the oxidation of lubricating oil can be monitored, and the changes in moisture, metal particles and acid value can be comprehensively reflected. The circulating oil volume can be monitored, and the decrease in flow rate indicates filter blockage or pipeline leakage, thus avoiding equipment overheating due to insufficient oil supply. With the help of the wear particle counter 5201 and pressure sensor 5202 inside the oil outlet monitoring unit 52, the oil resistance of the lubricating oil after use can be monitored. With the help of the wear particle counter 5201, metal wear particles can be classified and counted. Then, combined with the pressure sensor 5202 to monitor the return oil resistance, the faulty parts can be accurately located.

[0022] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An online monitoring device for circulating lubricating oil in mechanical equipment, comprising a pump body (1), an equipment body (3), and a control processor (6), characterized in that: The pump body (1) is fixedly connected to the output end of the oil inlet pipe (2), the equipment body (3) is provided with an intermediate circulation pipe (4), the output end of the oil inlet pipe (2) is fixedly connected to the input end of the intermediate circulation pipe (4), the input end of the pump body (1) is fixedly connected to the oil outlet pipe (5), and the input end of the oil outlet pipe (5) is fixedly connected to the output end of the intermediate circulation pipe (4). The oil inlet pipe (2) is provided with a first side branch pipe (21), the first side branch pipe (21) is provided with a first monitoring pipe (22), the first monitoring pipe (22) is installed with an oil inlet monitoring unit (24), the intermediate circulation pipe (4) is provided with a second side branch pipe (41), the second side branch pipe (41) is provided with a second monitoring pipe (42), the second monitoring pipe (42) is installed with an intermediate monitoring unit (44), the oil outlet pipe (5) is provided with a third monitoring pipe (51), the third monitoring pipe (51) is installed with an oil outlet monitoring unit (52), the first side branch pipe (21) and the second side branch pipe (41) are respectively provided with a first control valve (23) and a second control valve (43), and the control processor (6) is electrically connected to the oil inlet monitoring unit (24), the intermediate monitoring unit (44) and the oil outlet monitoring unit (52) through a signal line.

2. The online monitoring device for circulating lubricating oil in mechanical equipment according to claim 1, characterized in that: The oil inlet monitoring unit (24) is equipped with a first temperature sensor (2401), a viscosity sensor (2402), and an impurity monitor (2403).

3. The online monitoring device for circulating lubricating oil in mechanical equipment according to claim 1, characterized in that: The intermediate monitoring unit (44) is equipped with a microfluidic acid value sensor (4401), an ultrasonic flow meter (4402), a dielectric constant sensor (4403), and a second temperature sensor (4404).

4. The online monitoring device for circulating lubricating oil in mechanical equipment according to claim 1, characterized in that: The oil outlet monitoring unit (52) is equipped with a wear particle counter (5201) and a pressure sensor (5202).

5. The online monitoring device for circulating lubricating oil in mechanical equipment according to claim 1, characterized in that: The two ends of the first monitoring pipe (22) are respectively connected to the inlet end and the outlet end of the first side branch pipe (21), and the oil inlet monitoring unit (24) is installed inside the first monitoring pipe (22).

6. The online monitoring device for circulating lubricating oil in mechanical equipment according to claim 1, characterized in that: The two ends of the second monitoring pipe (42) are respectively connected to the inlet end and the outlet end of the second branch pipe (41), and the intermediate monitoring unit (44) is set inside the second monitoring pipe (42).

7. The online monitoring device for circulating lubricating oil in mechanical equipment according to claim 1, characterized in that: The two ends of the third monitoring pipe (51) are respectively connected to the inlet end and the outlet end of the oil outlet pipe (5), and the oil outlet monitoring unit (52) is installed inside the third monitoring pipe (51).

8. The online monitoring device for circulating lubricating oil in mechanical equipment according to claim 7, characterized in that: The first control valve (23) and the second control valve (43) are both solenoid valves and are electrically connected to the control processor (6).

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