Lubricating oil monitoring system

Abstract

The utility model relates to a lubricating oil monitoring system, and belongs to the technical field of lubricating oil recycling pipelines. The lubricating oil quality detection device comprises an oil tank, an oil pump, a lubricating oil using device, a lubricating oil quality detection sensor assembly and a control system, the inlet end of the oil pump is connected with the oil tank through an oil inlet pipe, and the outlet end of the oil pump is connected with an oil inlet of the lubricating oil using device through an oil outlet main pipe. An oil outlet of the lubricating oil using equipment is connected with the oil tank through a main oil return pipe, an oil coarse filter is arranged at the inlet end of the oil inlet pipe, an oil fine filter and a first oil cooler are sequentially installed on the main oil outlet pipe from front to back, a detection oil pipe is connected to the position, on the downstream side of the first oil cooler, of the main oil outlet pipe, and a detection box is connected to the tail end of the detection oil pipe. The detection box is connected with the oil tank through a bypass oil return pipe, the lubricating oil quality detection sensor assembly is arranged in the detection box, and a first temperature sensor and a first pressure gauge are arranged on the oil outlet main pipe and located on the downstream side of the connecting point of the detection oil pipe and the oil outlet main pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of lubricating oil monitoring systems, belong to lubricating oil circulation pipeline technical field. BACKGROUND

[0002] In the production and manufacture of cellulose products, centrifugal separation needs to be carried out on cellulose. When the centrifuge is designed, the shaft seal is connected with the bearing seat. During daily use, when the shaft seal is connected with the bearing seat, impurities in the centrifuge can enter the bearing seat when the seal fails. After the oil enters the bearing seat for lubrication, it will contaminate the lubricating oil when it flows back to the oil tank, and the failure of the lubricating oil may cause bearing damage.

[0003] After searching, in the pipeline system of lubricating oil, a monitoring system for detecting the actual use quality of lubricating oil is usually considered. For example, the Chinese utility model patent document with the authorization announcement number CN215569644U discloses a centralized lubrication and lubricating oil monitoring system, which includes an upper machine position, a lubricating oil tank, a control unit and a data receiving unit. The lubricating oil tank is provided with a lubricating oil pump, and the control unit is configured to control the output of the lubricating oil pump according to the data received by the data receiving unit. The lower machine position is provided with a lubricating part. The data acquisition unit is used to monitor the state data of the lubricating oil and send it to the data receiving unit. The data acquisition unit includes a flow sensor, a temperature sensor, a wear sensor, a moisture sensor, a pollution sensor, a viscosity sensor and a degradation sensor. The data acquisition unit can comprehensively monitor the quality of the lubricating oil, so that the staff can timely know the quality of the lubricating oil, ensure the lubrication effect, and also reflect the working condition of the lubricating part components through the quality monitoring of the lubricating oil, to ensure the reliable work of the whole equipment. However, the data acquisition unit (wear sensor, moisture sensor, pollution sensor, viscosity sensor and degradation sensor) in the scheme is mainly designed at the oil return channel or the oil return port of the lubricating oil tank, and cannot directly reflect whether the lubricating oil meets the technical requirements of the lubricating part. In addition, no treatment measures are considered for the lubricating oil in the lubricating oil tank during the circulation process to improve the quality of the lubricating oil before entering the lubricating part, which affects the utilization rate of the lubricating oil. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a lubricating oil monitoring system that can more accurately reflect the actual quality indicators of lubricating oil and improve the utilization rate of lubricating oil.

[0005] The utility model provides a technical scheme that is adopted to solve the above technical problems: lubricating oil liquid monitoring system, including oil tank, oil pump, lubricating oil use equipment, lubricating oil liquid quality detection sensor assembly and control system, lubricating oil use equipment, lubricating oil liquid quality detection sensor assembly all are electrically connected with control system, the import end of oil pump is connected with oil tank through oil inlet pipe, and the export end of oil pump is connected with the oil inlet of lubricating oil use equipment through oil outlet main pipe, and the oil outlet of lubricating oil use equipment is connected with oil tank through oil return main pipe, the import end of oil inlet pipe is provided with oil coarse filter, and oil fine filter and first oil cooler are installed in oil outlet main pipe from front to back in proper order, and the downstream side of first oil cooler is connected with detection oil pipe on oil outlet main pipe, and the tail end of detection oil pipe is connected with detection tank, and detection tank is connected with oil tank through bypass oil return pipe, and lubricating oil liquid quality detection sensor assembly is arranged in detection tank, and first temperature sensor and first pressure gauge are arranged on the downstream side of the connecting point of detection oil pipe and oil outlet main pipe on oil outlet main pipe.

[0006] It is further preferred that an overflow valve, a first throttle valve and a second pressure gauge are arranged on the oil outlet main pipe between the outlet end of the oil pump and the oil fine filter.

[0007] It is further preferred that a first flow meter is arranged on the detection oil pipe, and a second throttle valve is arranged on the bypass oil return pipe.

[0008] It is further preferred that a cut-off valve is arranged on the end of the detection oil pipe close to the detection tank and on the end of the bypass oil return pipe close to the detection tank.

[0009] It is further preferred that an electric contact pressure gauge is arranged on the downstream side of the connecting point of the detection oil pipe and the oil outlet main pipe on the oil outlet main pipe, and the electric contact pressure gauge is electrically connected with the control system.

[0010] It is further preferred that a second oil cooler is arranged in the oil tank.

[0011] It is further preferred that a plurality of lubricating oil use equipment are arranged in parallel, the lubricating oil use equipment are connected with the tail end of the oil outlet main pipe through oil outlet branch pipes, a second flow meter and a third throttle valve are arranged on the oil outlet branch pipes, and the lubricating oil use equipment are provided with a second temperature sensor.

[0012] The utility model discloses beneficial effect is: when implementing, lubricating oil will first pass through oil coarse filter, oil fine filter and cool to appropriate temperature through first oil cooler before entering lubricating oil use equipment, and the lubricating oil after filtration and cooling treatment enters lubricating oil use equipment again, can improve the utilization of lubricating oil, avoid lubricating oil early scrap. In addition, the utility model discloses lubricating oil quality detection sensor assembly of lubricating oil quality detection design in the detection box on the side branch pipeline, and the lubricating oil after filtration and cooling treatment is detected, can more accurate reaction lubricating oil actual quality index whether satisfies equipment use requirement. The first temperature sensor and first pressure gauge are arranged on the downstream side of the detection oil pipe and the outflow main pipe connecting point on the outflow main pipe, can ensure that the lubricating oil pressure and temperature that enter lubricating oil use equipment meet the design requirement, will not be influenced by the side branch pipeline of detection box. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic diagram of the utility model.

[0014] Marked parts in the drawing: oil tank 1, oil coarse filter 2, oil pump 3, overflow valve 4, first throttle valve 51, second throttle valve 52, third throttle valve 53, first pressure gauge 61, second pressure gauge 62, first oil cooler 71, second oil cooler 72, oil fine filter 8, stop valve 9, first temperature sensor 101, second temperature sensor 102, electric contact pressure gauge 11, first flowmeter 121, second flowmeter 122, lubricating oil use equipment 14. DETAILED DESCRIPTION

[0015] The utility model will be further explained in connection with the drawings and examples.

[0016] As Figure 1 Shown, the utility model discloses oil tank 1, oil pump 3, lubricating oil use equipment 14, lubricating oil quality detection sensor assembly and control system, lubricating oil use equipment 14, lubricating oil quality detection sensor assembly all and control system electrical connection, the import end of oil pump 3 is connected with oil tank 1 through oil inlet pipe, and the export end of oil pump 3 is connected with the oil inlet of lubricating oil use equipment 14 through outflow main pipe, and the oil outlet of lubricating oil use equipment 14 is connected with oil tank 1 through oil return main pipe, and the import end of oil inlet pipe is provided with oil coarse filter 2, and oil fine filter 8 and first oil cooler 71 are installed in sequence from front to back on outflow main pipe, and the downstream side connection of first oil cooler 71 has detection oil pipe on outflow main pipe, and the end of detection oil pipe is connected with detection box 13, and detection box 13 is connected with oil tank 1 through bypass oil return pipe, and lubricating oil quality detection sensor assembly sets up in detection box 13, and first temperature sensor 101 and first pressure gauge 61 are arranged on the downstream side of the detection oil pipe and the outflow main pipe connecting point on outflow main pipe.

[0017] The lubricating oil quality detection sensor assembly can refer to the prior art, for example, can be one or more of a wear sensor, a moisture sensor, a contamination sensor, a viscosity sensor, and a degradation sensor. The lubricating oil quality detection sensor assembly is used to detect various quality indicators of the lubricating oil. When the detection data does not meet the predetermined requirements, the lubricating oil using equipment 14 can be stopped by the control system. It can be understood that the utility model does not involve the improvement of the computer program, and the key technical point lies in the specific connection and cooperation relationship of each part in the pipeline system. The oil coarse filter 2 and the oil fine filter 8 do not represent the specific limitation of the filtering parameter, and only represent that the filtering accuracy of the oil fine filter 8 is greater than that of the oil coarse filter 2. The installation mode of the oil fine filter 8 and the first oil cooler 71 is a conventional mode, which means that the lubricating oil at the upstream end of the oil main pipe is filtered by the oil fine filter 8 first, and then enters the first oil cooler 71 for cooling. The cooled lubricating oil enters the downstream end of the oil main pipe.

[0018] In the implementation, the lubricating oil is filtered by the oil coarse filter 2 and the oil fine filter 8 first, and then cooled to an appropriate temperature by the first oil cooler 71 before entering the lubricating oil using equipment 14. The utilization rate of the lubricating oil can be improved, and the lubricating oil can be prevented from being scrapped too early. In addition, the lubricating oil quality detection sensor assembly for detecting the quality of the lubricating oil is designed on the bypass pipeline where the detection box 13 is located, and detects the lubricating oil after filtering and cooling, so that whether the actual quality indicators of the lubricating oil meet the equipment use requirements can be more accurately reflected. The first temperature sensor 101 and the first pressure gauge 61 are arranged on the downstream side of the connection point of the detection oil pipe and the oil main pipe, so that the pressure and temperature of the lubricating oil entering the lubricating oil using equipment 14 meet the design requirements and are not affected by the bypass pipeline where the detection box 13 is located.

[0019] Preferably, the overflow valve 4, the first throttle valve 51, and the second pressure gauge 62 are arranged on the oil main pipe between the outlet end of the oil pump 3 and the oil fine filter 8. The second pressure gauge 62 can directly reflect the pipeline pressure between the outlet end of the oil pump 3 and the oil fine filter 8, and the overflow valve 4 and the first throttle valve 51 are used to control the pressure of the oil pump 3 outlet end oil circuit system.

[0020] Preferably, the first flow meter 121 is arranged on the detection oil pipe, and the second throttle valve 52 is arranged on the bypass oil return pipe, so that the flow of the bypass pipeline where the detection box 13 is located can be conveniently controlled.

[0021] Preferably, the detection oil pipe and the bypass return oil pipe are respectively provided with a stop valve 9 at the end close to the detection tank 13, so that the detection tank 13 and the lubricating oil quality detection sensor assembly inside the detection tank 13 can be conveniently overhauled.

[0022] Preferably, an electric contact pressure gauge 11 is arranged on the oil outlet main pipe downstream of the connection point of the detection oil pipe, and the electric contact pressure gauge 11 is electrically connected with the control system. The first pressure gauge 61 can be generally understood, and in the preferred embodiment, the "first pressure gauge 61" only represents a common pressure gauge for field reading. The electric contact pressure gauge 11 can transmit data to the control system for corresponding processing and control. Generally, when the electric contact pressure gauge 11 detects that the pipeline pressure does not meet the set threshold, the lubricating oil using equipment 14 will automatically stop running.

[0023] Preferably, a second oil cooler 72 is arranged in the oil tank 1, which can pre-cool the lubricating oil and improve the cooling efficiency. The second oil cooler 72 and the first oil cooler 71 can share a refrigerant circuit, or can be independently arranged with a refrigerant circuit.

[0024] Preferably, the lubricating oil using equipment 14 is arranged in parallel, and the lubricating oil using equipment 14 is connected with the end of the oil outlet main pipe through an oil outlet branch pipe, the oil outlet branch pipe is provided with a second flow meter 122 and a third throttle valve 53, and the lubricating oil using equipment 14 is provided with a second temperature sensor 102. The lubricating oil using equipment 14 can be generally understood, which can refer to different equipment or different lubricating parts of the same equipment. The second flow meter 122 and the third throttle valve 53 can make each oil outlet branch pipe convenient to adjust the flow. The second temperature sensor 102 is used to monitor the actual working temperature of the lubricating oil using equipment 14 (in the specific embodiment of the utility model, it refers to the oil temperature and the bearing temperature of the centrifugal machine).

Claims

1. A lubricating oil monitoring system, comprising an oil tank (1), an oil pump (3), a lubricating oil using device (14), a lubricating oil quality detection sensor assembly and a control system, the lubricating oil using device (14) and the lubricating oil quality detection sensor assembly are electrically connected with the control system, an inlet end of the oil pump (3) is connected with the oil tank (1) through an oil inlet pipe, an outlet end of the oil pump (3) is connected with an oil inlet of the lubricating oil using device (14) through an oil outlet main pipe, and an oil outlet of the lubricating oil using device (14) is connected with the oil tank (1) through an oil return main pipe, characterized in that: The inlet end of the oil inlet pipe is provided with a coarse oil filter (2), the oil outlet main pipe is sequentially provided from front to back with a fine oil filter (8) and a first oil cooler (71), a detection oil pipe is connected to the oil outlet main pipe downstream of the first oil cooler (71), the detection oil pipe is connected to a detection tank (13) at its end, the detection tank (13) is connected to the oil tank (1) through a bypass oil return pipe, a lubricating oil quality detection sensor assembly is arranged in the detection tank (13), and a first temperature sensor (101) and a first pressure gauge (61) are arranged on the oil outlet main pipe downstream of the connection point between the detection oil pipe and the oil outlet main pipe. ​ 2. The lubricating oil monitoring system of claim 1, wherein: An overflow valve (4), a first throttle valve (51) and a second pressure gauge (62) are arranged on the oil outlet main pipe between the outlet end of the oil pump (3) and the fine oil filter (8).

3. The lubricating oil monitoring system of claim 1, wherein: A first flowmeter (121) is arranged on the detection oil pipe, and a second throttle valve (52) is arranged on the bypass oil return pipe.

4. The lubricating oil monitoring system of claim 1, wherein: A cut-off valve (9) is arranged on the detection oil pipe close to the detection tank (13) and on the bypass oil return pipe close to the detection tank (13).

5. The lubricating oil monitoring system of claim 1, wherein: An electric contact pressure gauge (11) is arranged on the oil outlet main pipe downstream of the connection point between the detection oil pipe and the oil outlet main pipe, and the electric contact pressure gauge (11) is electrically connected to the control system.

6. The lubricating oil monitoring system of claim 1, wherein: A second oil cooler (72) is arranged in the oil tank (1).

7. A lubricating oil monitoring system according to any one of claims 1 to 6, wherein: A plurality of lubricating oil use devices (14) are arranged side by side, the lubricating oil use devices (14) are connected to the end of the oil outlet main pipe through oil outlet branch pipes, second flowmeters (122) and third throttle valves (53) are arranged on the oil outlet branch pipes, and the lubricating oil use devices (14) are provided with second temperature sensors (102).

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