Lubricating oil station with oil online monitoring function

Abstract

The utility model relates to a lubricating oil station with an oil liquid on-line monitoring function. The lubricating oil station is composed of an oil tank, a digital liquid level meter, an accident oil return unit, a pressure oil liquid cooling unit, a pressure oil liquid filtering unit, a system oil pump assembly, an oil liquid heating unit, an oil liquid on-line monitoring unit, accessories and pipelines. The oil liquid online monitoring unit has an oil liquid online monitoring function and comprises a lower computer unit, an oil path circulating unit, a communication unit and an upper computer unit. The oil way circulation unit is mainly composed of an oil taking opening, an oil taking pipeline, an oil inlet, an internal oil way pipeline, an oil outlet, an oil return pipeline and an oil return opening. The communication unit is mainly composed of a power line and a signal line. The upper computer unit mainly comprises an industrial personal computer and a display; a moisture sensor, a viscosity sensor and a pollution degree sensor are arranged in the upper computer unit, and real-time monitoring of oil moisture, viscosity and pollution degree is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic systems, and in particular relates to a lubricating oil station with an oil online monitoring function. Background Art

[0002] The high-speed, heavy-load and continuous production process characteristics of metallurgical enterprises cause huge losses due to unplanned shutdowns of metallurgical equipment. In order to avoid unplanned shutdowns, the level of equipment maintenance must be improved. From industrial mass production to the present, equipment maintenance technology has roughly gone through three stages: post-maintenance → preventive maintenance → condition maintenance or predictive maintenance. The third method is based on the operating conditions of the equipment and the analysis of operating condition data. It determines the equipment status and formulates a maintenance plan through detection, comparison and analysis. Its feature is the use of advanced testing technology for equipment status monitoring and fault diagnosis. Therefore, carrying out equipment status detection is the only way to improve the level of metallurgical equipment maintenance in the future.

[0003] At present, equipment status monitoring has formed a pattern of mainly vibration, oil monitoring, current monitoring and temperature monitoring, supplemented by other technologies. Among them, oil monitoring is the most promising technology for research and application after vibration detection, but it also has the following problems.

[0004] (1) Existing technologies mainly use offline methods to monitor oil, which can easily cause secondary contamination during the oil sample collection process, as well as inaccurate and untimely monitoring results.

[0005] (2) The lack of online oil detection methods for the main equipment of the production line makes it impossible to detect the early signs of equipment failure, and small problems become major failures, affecting the safe and reliable operation of the production line equipment.

[0006] (3) The lubrication system of a modern continuous production line has a huge impact on the high-reliability operation of the equipment. Therefore, with the continuous improvement of automation and intelligence levels, it is objectively necessary to improve the maintenance level of the lubrication system. Utility Model Content

[0007] The utility model provides a lubricating oil station with an oil online monitoring function, aiming to solve the technical problem of oil online status monitoring in a lubricating system.

[0008] To this end, the utility model adopts the following technical solutions:

[0009] A lubricating oil station with an oil online monitoring function, comprising an oil tank, a digital liquid level gauge, an emergency oil return unit, an oil cooling unit, an oil filter unit, a system oil pump assembly, an oil heating unit, and an oil online monitoring unit;

[0010] The digital level gauge is installed in the oil tank to monitor the oil tank liquid level;

[0011] The emergency oil return unit is used to guide the oil on the oil supply pipeline into the oil tank;

[0012] The oil cooling unit is used to cool the oil; the oil heating unit is used to heat the oil; the oil filtering unit is used to filter impurities in the oil;

[0013] The oil online monitoring unit is used to monitor the moisture, viscosity and contamination of the oil.

[0014] Furthermore, the oil tank is also provided with a digital thermometer for measuring the temperature of the oil in the oil tank.

[0015] Furthermore, the return oil pressure value of the accident oil return unit is 6.5-7.5 bar.

[0016] Furthermore, the oil cooling unit includes a cooler, a film-type temperature control valve, a pipeline filter, a manual valve and a digital thermometer; the higher the outlet oil temperature detected by the film-type temperature control valve, the greater the opening of the film-type temperature control valve.

[0017] Furthermore, the outlet oil temperature setting value is 38-42°C.

[0018] Furthermore, the oil online monitoring unit includes a lower computer unit, an oil circulation unit, a communication unit and an upper computer unit;

[0019] The oil circulation unit includes an oil intake port, an oil intake pipeline, an oil inlet, an internal oil pipeline, an oil outlet, an oil return pipeline, and an oil return port; the communication unit includes a power cord and a signal cord; the host computer unit includes an industrial computer and a display, and the industrial computer performs real-time analysis on the collected data.

[0020] The lower computer unit has built-in moisture sensor, viscosity sensor and contamination sensor to realize real-time monitoring of oil moisture, viscosity and contamination.

[0021] The beneficial effects of the utility model are:

[0022] ⑴ Compared with the prior art, the utility model realizes real-time detection of equipment wear and oil performance through online monitoring of the real-time status of lubricating oil, so as to achieve the purpose of predicting equipment wear failure and oil service life. Its application in steel enterprises helps to improve the level of enterprise equipment maintenance and lays the foundation for the transformation of equipment maintenance mode to predictive maintenance mode.

[0023] (2) The lubrication system of key equipment in steel enterprises implements online oil monitoring. Since the detection system has fault alarm and degradation trend prediction functions, it can effectively avoid sudden equipment failures caused by wear.

[0024] ⑶ By real-time monitoring of the operating status, wear degree and deterioration trend of the lubrication system, the equipment maintenance plan is targeted, redundant maintenance and oil waste are avoided, and equipment maintenance costs can be effectively reduced. Industry data shows that the investment-profit ratio of online monitoring and diagnostic technology is 1:5, which has a good economic prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the system principle diagram of the utility model;

[0026] Figure 2 It is the principle diagram of the oil online monitoring unit of the utility model;

[0027] In the figure: 1—oil tank, 2—liquid level gauge, 3—accident oil return unit, 4—oil cooling unit, 5—oil filter unit, 6—system oil pump assembly, 7—oil heating unit, 8—oil online monitoring unit. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0029] For the convenience of description, the lubricating oil station described in the utility model is described in sub-items according to its functional components.

[0030] 1. Fuel tank 1

[0031] like Figure 1 As shown, the oil tank 1 described in the utility model has the outstanding feature that a digital liquid level meter 2 is designed in the oil tank 1 to detect the liquid level of the oil tank 1 in real time; at the same time, a digital thermometer and an oil heating unit 7 are configured in the oil tank 1, and the utility model increases the oil temperature by steam heating.

[0032] 2. Accident oil return unit 3

[0033] like Figure 1 As shown, the utility model accident oil return unit 3 is composed of a manual valve, a membrane hydraulic control valve and a pipeline. The manual valve is in a normally open state, and the control oil circuit of the membrane hydraulic control valve is connected to the system main pipe. Its function is to open the membrane hydraulic control valve when the system main pipe pressure is greater than the set value, and the main pipeline pressure oil returns to the oil tank 1 through the accident oil return unit 3, avoiding the occurrence of system pipe explosion accidents.

[0034] 3. System oil pump assembly 6

[0035] like Figure 1 As shown, the oil pump assembly 6 of the utility model system is composed of an oil pump, a bypass valve and a pipeline, and is a dual pump setting, one for backup and one for use. The oil pump is a gear pump, which is the power source of the lubrication system and meets the requirements of the lubrication system for pressure and flow.

[0036] 4. Pressure oil cooling unit 4

[0037] like Figure 1 As shown, the pressure oil cooling unit 4 of the utility model is composed of a cooler, a film temperature control valve, a pipeline filter, a manual valve, a digital thermometer, pipelines, and accessories. Among them, the cooling water flow through the cooler is controlled by the outlet oil temperature detected by the film temperature control valve. The greater the outlet oil temperature is above the set value, the greater the film temperature control valve opening is, and the greater the cooling water flow through the cooler is, and vice versa. The cooling of the outlet oil temperature is achieved in this way.

[0038] 5. Oil heating unit 7

[0039] like Figure 1 As shown, the oil heating unit 7 of the utility model is composed of a heater, a film-type temperature control valve, a pipeline filter, a manual valve, a pipeline peephole, pipelines, and accessories. Among them, the steam flow through the heater is controlled by the oil temperature of the oil tank 1 detected by the film-type temperature control valve. The greater the oil temperature of the oil tank 1 is below the set value, the greater the opening of the film-type temperature control valve, the greater the steam flow through the heater, and vice versa. In this way, the heating of the oil in the oil tank 1 is achieved.

[0040] 6. Pressure oil filter unit 5

[0041] like Figure 1 As shown, the pressure oil filter unit 5 described in the utility model is composed of a filter, a pressure relay, a manual valve and a pipeline, and is a double-filter parallel structure. The pressure relay sends an alarm signal according to a set value when the filter is blocked.

[0042] 7. Oil online monitoring unit 8

[0043] like Figure 1 , Figure 2 As shown, the oil online monitoring unit 8 described in the utility model includes a lower computer unit, an oil circulation unit, a communication unit, and an upper computer unit. Among them, the lower computer unit is mainly composed of an oil online acquisition module, a power module, and a control board module to complete the data acquisition of online monitoring; the oil circulation unit is mainly composed of an oil intake port, an oil intake pipeline, an oil inlet, an internal oil pipeline, an oil outlet, an oil return pipeline, and an oil return port to complete the circulation of oil and realize real-time acquisition of oil; the communication unit is mainly composed of a power line and a signal line to complete data transmission; the upper computer unit is mainly composed of an industrial computer and a display, and the industrial computer performs real-time analysis on the collected data, and intuitively displays the real-time data through the data client of the display.

[0044] The lower computer unit described in the utility model has built-in moisture sensor, viscosity sensor and contamination sensor to realize real-time monitoring of oil moisture, viscosity and contamination; the upper computer industrial computer has built-in oil state analysis module and fault diagnosis module to realize real-time analysis of oil moisture, viscosity and contamination and predict and judge system or equipment failures.

[0045] Field Example:

[0046] like Figure 1 As shown in the figure, a thin oil lubrication station for a rolling mill in a steel mill. The system is designed with an emergency oil return unit 3, and the system return oil pressure is set to 7 bar, thereby ensuring the system safety of the lubricating oil station in the event of pipeline blockage or system failure.

[0047] A rolling mill thin oil lubrication station in a steel mill. Its system oil pump unit 6 is a dual pump setup, one for backup and one for use. The oil pump is a gear pump with an outlet pressure of 5 bar. Its oil tank 1 has an effective volume of 2m 3 . A digital level gauge 2 and a digital thermometer are set on the oil tank 1. The digital level gauge 2 is set with three warning levels: the trip pump level (50%), the refueling level (60%) and the full level of the oil tank 1 (90%). When the trip pump level occurs, the oil pump unit is triggered to shut down. When the refueling level occurs, the maintenance personnel should replenish the oil in time, usually to the full level. The digital thermometer participates in the oil temperature control. The system sets two warning oil temperatures: low oil temperature (30℃) and high oil temperature (50℃). When the oil temperature is lower than 35℃, the oil heating unit 7 is started to circulate and heat the oil station. The heating stops when the oil temperature reaches 45℃. The filtration accuracy of its pressure oil filter unit 5 is 0.08mm, and the pressure oil cooling unit 4 controls the oil temperature to 40℃.

Claims

1. A lubricating oil station with oil online monitoring function, characterized in that: Including oil tank, digital level gauge, accident oil return unit, oil cooling unit, oil filter unit, system oil pump assembly, oil heating unit, oil online monitoring unit; The digital level gauge is installed in the oil tank to monitor the oil tank liquid level; The emergency oil return unit is used to guide the oil on the oil supply pipeline into the oil tank; The oil cooling unit is used to cool the oil; the oil heating unit is used to heat the oil; the oil filtering unit is used to filter impurities in the oil; The oil online monitoring unit is used to monitor the moisture, viscosity and contamination of the oil.

2. The lubricating oil station with oil online monitoring function according to claim 1 is characterized in that: The oil tank is also provided with a digital thermometer for measuring the temperature of the oil in the oil tank.

3. The lubricating oil station with oil online monitoring function according to claim 1 is characterized in that: The return oil pressure value of the accident oil return unit is 6.5-7.5 bar.

4. The lubricating oil station with oil online monitoring function according to claim 1 is characterized in that: The oil cooling unit comprises a cooler, a film-type temperature control valve, a pipeline filter, a manual valve and a digital thermometer; the higher the outlet oil temperature detected by the film-type temperature control valve is, the greater the opening of the film-type temperature control valve is.

5. The lubricating oil station with oil online monitoring function according to claim 4 is characterized in that: The outlet oil temperature setting value is 38-42℃.

6. The lubricating oil station with oil online monitoring function according to claim 1 is characterized in that: The oil online monitoring unit includes a lower computer unit, an oil circulation unit, a communication unit and an upper computer unit; The oil circulation unit includes an oil intake port, an oil intake pipeline, an oil inlet, an internal oil pipeline, an oil outlet, an oil return pipeline, and an oil return port; the communication unit includes a power line and a signal line; the host computer unit includes an industrial computer and a display, and the industrial computer performs real-time analysis on the collected data; The lower computer unit has built-in moisture sensor, viscosity sensor and contamination sensor to realize real-time monitoring of oil moisture, viscosity and contamination.

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