Online oil monitoring equipment

Abstract

The utility model relates to oil liquid online monitoring equipment. The equipment comprises an oil liquid main pipeline, and oil liquid flows in from a main oil inlet and flows out from a main oil outlet in the oil liquid main pipeline; the first filter is arranged in the oil liquid main pipeline and is suitable for filtering oil liquid; the auxiliary oil liquid monitoring pipeline is configured to enable an auxiliary oil inlet of the auxiliary oil liquid monitoring pipeline to be intermittently communicated and disconnected with the main oil liquid pipeline through a valve; the off-line detection oil tank is connected with the oil liquid auxiliary monitoring pipeline, is configured to form an off-line detection environment of the oil liquid during the intermittent disconnection of the oil liquid auxiliary monitoring pipeline and the oil liquid main pipeline, and is configured to be provided with at least one of a viscosity sensor and a moisture sensor in the off-line detection oil tank; oil liquid intermittently flows into the oil liquid auxiliary monitoring pipeline and the off-line detection oil tank through an auxiliary oil inlet of the oil liquid auxiliary monitoring pipeline and flows out through an auxiliary oil outlet of the oil liquid auxiliary monitoring pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of oil monitoring, in particular to an oil online monitoring device that simulates an offline detection environment, or an oil online monitoring device that can perform intermittent substantially offline detection operations. Background Art

[0002] Industrial oils, for example, various power and transmission machinery and equipment, hydraulic equipment, etc., cannot work without the normal and good operation of engine oil, transmission oil, hydraulic oil, lubricating oil and other oils as working oils. Oils play the role of energy transfer, lubrication, friction reduction, power transmission, cooling and other functions in related equipment. However, the performance of oils will deteriorate over time during the working / service process, for example, oxidation, aging, mixing with debris, sludge, water or moisture, air and other unwanted impurities. For example, lubricating oil, as a lubricant for machinery / transmission equipment, can reduce friction, reduce wear, and prevent rust on the metal surface. It can also continuously absorb heat from the friction surface, reduce the temperature of the friction surface, play a role in cooling, lubricating and reducing friction, ensure the normal operation of the equipment, reduce failures, and extend its service life.

[0003] However, if too much metal particles or impurities are mixed in the oil, such as lubricating oil, during operation, it will cause unnecessary wear on the lubricating surface, excessive friction, high temperature, and even serious failure and downtime. Too much water mixed in the oil will cause the oil system to fail, such as lubrication, transmission, hydraulic transmission power, etc. The performance deteriorates and even affects the normal operation of the system. The viscosity of the oil may also change after a long period of operation, which may cause poor lubrication of the system and excessive resistance of the corresponding moving pair. In severe cases, the machine cannot be started or initialized normally, or even cause the system to not operate normally. The deterioration / deterioration of oil quality is also one of the main reasons for equipment failure and reduced service life.

[0004] By using online monitoring methods to continuously monitor the oil used in the equipment, the oil can be monitored and analyzed online in real time, and oil can be changed according to the actual situation of oil deterioration (for example, as late as possible but in a timely manner), thereby improving the economy of oil use; the current working condition and future condition of the equipment can be evaluated and judged based on the oil quality monitoring results, and potential accidents of equipment using oil can be discovered and predicted in time, thereby preventing major accidents of the equipment and improving the reliability of the equipment.

[0005] The online oil monitoring of the prior art can be carried out in real time, that is, multiple monitoring sensors are arranged in a pipeline where the oil flows, for example, in an integrated or serial manner, to carry out online monitoring, so as to measure and monitor the oil flowing in the pipeline in real time. The benefits of real-time online monitoring are self-evident. For example, the quality / performance or changes of the oil can be grasped in real time, so that various parameters of the oil can be grasped at the first time, and whether the oil reaches or exceeds a certain parameter threshold can be evaluated, so as to predict accidents or potential accidents of the equipment using the oil, prevent the occurrence of major accidents caused by the oil, and improve the reliability of the equipment.

[0006] CN219911237U discloses an online monitoring device for fan lubricating oil, which relates to the field of lubricating oil detection system, including a monitoring unit, a lubricating oil circulation component and a cooling water circulation component, wherein the monitoring unit is electrically connected to the lubricating oil circulation component and the cooling water circulation component. The lubricating oil circulation component includes an oil tank for fan lubrication and an electronic level gauge and a thermistor sensor installed on the oil tank for detecting the oil quality in the oil tank, wherein the electronic level gauge and the thermistor sensor are electrically connected to the monitoring unit. A circulation pipeline for heat exchange is also connected to one side of the oil tank, and the cooling water circulation component includes a cooling box, wherein the circulation pipeline is connected to the inside of the cooling box, and a conductivity sensor for detecting the conductivity of the circulating water is also installed on the return pipe of the cooling box, wherein the conductivity sensor is electrically connected to the monitoring unit. Thus, real-time monitoring of the lubricating oil condition is achieved.

[0007] However, the defects of the existing technology of online oil monitoring are also very obvious and numerous. For example, the service conditions of equipment using oil are diverse, and some of them may have relatively severe working conditions and the adverse consequences brought about by them. For example, it is easy for water and moisture to be entrained in the oil pipeline, and it is easy for worn particles such as metal particles to be generated during the working process. It is easy for dust / dust particles to be entrained / accumulated in the oil pipeline (for example, exposed to a dusty environment), and the equipment is prone to strong vibration or shaking during the working process, or is prone to vibration or shaking in the working environment, etc.; bubbles are generated in the oil pipeline of the equipment due to various reasons (such as too fast flow rate, or the oil is stirred / shaken / repeatedly inverted / repeatedly reversed, etc.), etc. Some of these working conditions will have many adverse effects on the online measurement and monitoring of oil. For example, some sensors such as metal particle sensors require the oil to maintain a certain relatively high flow rate to ensure the accuracy and sustainability of the measurement. However, when measuring the viscosity of the oil, the viscosity sensor requires a relatively low flow rate of the oil, or even zero, and does not want bubbles in the oil, etc. When measuring, the moisture sensor and the viscosity sensor hope that the flow rate and vibration are as low as possible and there are basically no bubbles in the oil to ensure relatively accurate measurement data, which does not exist for the actual working conditions of many normally operating online monitoring oil equipment (pipelines), and does not meet the ideal working conditions of the high flow rate required for accurate measurement of metal particle sensors, for example; however, when not measuring, the moisture sensor and the viscosity sensor hope that there are sufficient measures to ensure that, for example, the moisture sensor window, the viscosity sensor resonant plate, etc. are not easily accumulated or contaminated with sludge or other impurities, so as to ensure the measurement accuracy and service life of the sensor, but this is not achievable by the online oil monitoring equipment / arrangement of the prior art. For this reason, some online oil monitoring systems require regular maintenance or calibration over time, which requires shutting down the equipment using oil (and the online oil monitoring equipment) for offline sensor calibration or sensor replacement, or using additional, complex and expensive calibration equipment or redundant sensor configurations to achieve online calibration.

[0008] According to another off-line oil monitoring technology in the prior art, samples are usually collected on-site at the equipment and then taken to a laboratory for analysis or a portable device is used for on-site off-line measurement.

[0009] Although the existing offline oil monitoring method can use oil analysis technology and various advantages of offline measurement to analyze the offline oil information collected and taken away on site to obtain the test results, the oil sampling in the laboratory monitoring not only has a long analysis cycle, but also requires relatively long and costly equipment, personnel, measurement and feedback cycles, and some parameters cannot timely reflect the real-time or substantially real-time operating conditions of the equipment. For example, it is ideal that the pressure sensor is always online on the oil pipeline of the equipment to provide real-time and true oil pipeline pressure data. It is not impossible to use offline detection of the pressure sensor, but it is not an ideal pressure monitoring method in the oil pipeline.

[0010] Portable equipment for on-site offline measurement not only requires the addition of professional technicians but also requires personnel to enter the site every time, which not only increases labor costs, but also brings additional operational risks due to manual on-site intervention. In addition, some equipment / equipment environments that use oil are not suitable for manual on-site monitoring intervention, and the application occasions are limited. Moreover, since relatively simple and simplified portable equipment is used, monitoring cannot be achieved in real time or substantially in real time, and the monitoring parameters are limited, making it difficult to identify deep-seated faults and risks of the oil in a timely manner.

[0011] The industry continues to need improved oil monitoring technologies and equipment to minimize or even eliminate the above-mentioned technical deficiencies, as well as to achieve other more technical advantages, and to better meet and be used in more application scenarios.

[0012] The information included in this background section of the present specification, including any references cited herein and any description or discussion thereof, is included for technical reference purposes only and is not to be construed as subject matter that will limit the scope of the present invention. Utility Model Content

[0013] In view of the above and other more concepts, the present utility model is proposed.

[0014] One of the main concepts of the utility model is to propose an online oil monitoring device, or it can also be called an online oil monitoring device that essentially performs intermittent offline detection operations. The configuration / technology of this online oil monitoring device not only combines some of the advantages of online monitoring and offline detection in the prior art, but can not only simulate a relatively ideal environment for offline detection of oil (partial parameters), but also perform the required substantial offline detection operations (as well as possible offline calibration operations, offline replacement operations, offline maintenance, etc.); in addition, the design and configuration of the utility model can also reduce or even avoid many defects of online monitoring and offline detection in the prior art.

[0015] According to one aspect of the utility model, an oil online monitoring device is provided, the oil online monitoring device comprising: an oil main line, in which oil flows in from a main oil inlet at a first flow rate and flows out from a main oil outlet; a first filter, arranged in the oil main line and suitable for filtering the oil therein; wherein the oil online monitoring device further comprises: an oil auxiliary monitoring line, which is arranged so that its auxiliary oil inlet is intermittently connected and disconnected with the oil main line through a valve; and a An offline detection oil tank is configured to form an offline detection environment for oil during the period when the auxiliary oil monitoring pipeline is intermittently disconnected from the main oil pipeline, and is configured to provide at least one of a viscosity sensor suitable for sensing the viscosity of the oil and a moisture sensor suitable for sensing the water content and / or water activity in the oil in the offline detection oil tank; wherein the oil intermittently flows into the auxiliary oil monitoring pipeline and the offline detection oil tank via the auxiliary oil inlet of the auxiliary oil monitoring pipeline, and flows out via the auxiliary oil outlet of the auxiliary oil monitoring pipeline.

[0016] According to one embodiment, the oil online monitoring device also includes a second filter, which is arranged in the oil auxiliary monitoring pipeline and is suitable for filtering the oil therein, wherein the second filter is located upstream of the offline detection oil tank along the oil flow direction in the oil auxiliary monitoring pipeline.

[0017] According to one embodiment, at least one section of the auxiliary oil monitoring pipeline connected to the inlet of the offline detection oil tank is formed by a hose.

[0018] According to one embodiment, the joint of the auxiliary oil monitoring pipeline connected to the inlet of the offline detection oil tank is a buffer vibration reduction joint.

[0019] According to one embodiment, the offline detection oil tank is installed in a buffering and vibration reduction environment.

[0020] According to one embodiment, the offline detection oil tank is installed on the vibration reduction device.

[0021] According to one embodiment, a constant temperature controller is provided in the offline detection oil tank.

[0022] According to one embodiment, the temperature of the oil in the offline detection oil tank is controlled at 40° C. by the thermostatic controller.

[0023] According to one embodiment, the inlet of the offline detection oil tank is arranged at one side close to the bottom thereof, and the outlet of the offline detection oil tank is arranged at the other side close to the top thereof.

[0024] According to an embodiment, both a viscosity sensor and a moisture sensor are arranged in the offline detection oil tank, wherein the position of the viscosity sensor is arranged to be higher than the position of the moisture sensor.

[0025] According to one embodiment, an oil pump for driving the flow of oil is provided in the main oil line; and a metal particle sensor is arranged in the main oil line, suitable for detecting metal particles in the oil; wherein the first filter is located downstream of the metal particle sensor and upstream of the oil pump along the oil flow direction in the main oil line.

[0026] According to one embodiment, at least one of the following items is further provided in the main oil line:

[0027] A pressure sensor for detecting oil pressure;

[0028] An oil leakage detection sensor for monitoring whether the oil in the main oil pipeline is leaking;

[0029] Oil quality sensor, suitable for collecting oil quality information; and

[0030] The temperature sensor is suitable for collecting the temperature information of the oil.

[0031] According to one embodiment, the metal particle sensor is arranged on a side of the main oil line closer to the main oil inlet, and the pressure sensor is arranged on a side of the main oil line closer to the main oil outlet.

[0032] According to one embodiment, the oil online monitoring device also includes an outer cover, wherein a portion of the oil main line, the oil auxiliary monitoring line and the offline detection oil tank are all located on the inner side of the outer cover, and the first filter is installed on the outer side of the outer cover.

[0033] According to an embodiment, the first filter is a coarse filter and the second filter is a fine filter.

[0034] According to an embodiment, the valve is an electrically or mechanically actuated valve.

[0035] According to one embodiment, the valve is a three-way solenoid valve or an electrically actuated three-way ball valve.

[0036] According to one embodiment, the inner diameter of the auxiliary oil monitoring line is greater than the inner diameter of the main oil line, so that the second flow rate of the oil in the auxiliary oil monitoring line is less than the first flow rate.

[0037] According to one embodiment, the inner diameter of the auxiliary oil monitoring pipeline is more than 1.5 times the inner diameter of the main oil pipeline.

[0038] According to one embodiment, the flow area of ​​the offline detection oil tank is much larger than the flow area of ​​the oil auxiliary monitoring pipeline; preferably, the flow area of ​​the offline detection oil tank is more than 5 times the flow area of ​​the oil auxiliary monitoring pipeline.

[0039] According to an embodiment, the offline detection tank is further configured to be suitable for at least one of sensor maintenance, sensor replacement and sensor calibration.

[0040] According to one embodiment, the oil online monitoring device further includes a data processing component, which includes a data acquisition interface, a data processing chip and a data sending unit, wherein the data sending unit is configured to support wired and / or wireless transmission, and the data processing component is suitable for communication connection with a host computer.

[0041] According to an embodiment, the oil online monitoring device is configured to periodically perform offline testing in the offline testing tank.

[0042] According to another aspect of the utility model, a method for operating an online oil monitoring device is also disclosed, the method comprising: step one: intermittently connecting a valve between the main oil line of the online oil monitoring device and the auxiliary oil monitoring line of the online oil monitoring device, so that the main oil line is connected to the auxiliary oil monitoring line and the connected offline detection oil tank for a period of time, replacing the original oil in the offline detection oil tank with the newly flowing oil; step two: disconnecting the valve to disconnect the connection between the main oil line and the auxiliary oil monitoring line and the offline detection oil tank; and step three: maintaining the disconnection, and performing at least one of the following operations in the offline detection oil tank: sensor detection, sensor maintenance, sensor replacement and sensor calibration.

[0043] According to one embodiment, after step 2 and before executing step 3, the disconnection is maintained for a period of time.

[0044] According to an embodiment, the intermittent connection and the disconnection are performed automatically and regularly.

[0045] According to one embodiment, the method further includes step four: selectively continuing to maintain the disconnection until the next intermittent connection operation.

[0046] According to one embodiment, the oil online monitoring device is the oil online monitoring device as described above.

[0047] According to one embodiment, the oil online monitoring device further includes a data processing component, which is in communication connection with the acquisition component and the metal particle sensor, and is adapted to receive the quality parameter information and particle information sent by the acquisition component and the metal particle sensor, and analyze the information to obtain the oil detection result.

[0048] According to one embodiment, the oil online monitoring device further comprises a power supply interface, which is detachably connected to the outer cover and is suitable for converting alternating current into direct current so as to power the oil pump component and the data processing component.

[0049] According to one embodiment, the oil online monitoring device further comprises a network component, which is detachably connected to the outer cover and is suitable for communicating with the optical fiber module 80 via an optical fiber cable.

[0050] According to an embodiment, the metal particles include at least one of ferromagnetic particles and non-ferromagnetic particles.

[0051] According to one embodiment, the communication connection mode between the data processing component and the host computer includes at least one of 4G, 5G, WiFi, Ethernet and Bluetooth.

[0052] According to another aspect of the utility model, an offline detection oil tank is disclosed, comprising: an oil tank body for containing oil; an inlet arranged on one side of the oil tank body; an outlet arranged on the other side of the oil tank body; wherein the oil tank body is further provided with at least one of the following items: a viscosity sensor configured to sense the viscosity of the oil; and a moisture sensor configured to sense the water content and / or water activity in the oil; and the offline detection oil tank is configured to be able to present the following states: a state of intermittent connection with the main oil line, in which state, the old oil in the offline detection oil tank can be replaced with new oil and filled with new oil; a state of intermittent disconnection from the main oil line, in which state, the offline detection oil tank can form an offline detection environment for the oil.

[0053] According to one embodiment, the inlet of the offline detection oil tank is intermittently connected to and disconnected from the main oil line by means of an auxiliary oil monitoring line and a valve.

[0054] According to an embodiment, at least one section of the auxiliary oil monitoring pipeline connected to the inlet is a hose and / or is connected to the inlet via a buffer vibration reduction joint.

[0055] According to one embodiment, a filter is provided in the auxiliary oil monitoring pipeline.

[0056] According to one embodiment, the offline detection oil tank is provided with a vibration reduction device.

[0057] According to an embodiment, the inlet is provided at one side close to the bottom of the tank body, and the outlet is provided at the other side close to the top of the tank body.

[0058] According to one embodiment, the offline detection oil tank is provided with a constant temperature controller.

[0059] According to an embodiment, both a viscosity sensor and a moisture sensor are arranged in the offline detection oil tank, wherein the position of the viscosity sensor is arranged to be higher than the position of the moisture sensor.

[0060] According to one embodiment, the temperature of the oil in the offline detection oil tank is controlled at 40° C. by the thermostatic controller.

[0061] According to one embodiment, the offline detection oil tank is installed vertically, and its flow area is more than 5 times the flow area of ​​the oil auxiliary monitoring pipeline connected to it.

[0062] According to one or more embodiments of the utility model, the oil online monitoring device and the intermittent online monitoring method of the oil of the utility model can monitor the oil online in a simulated offline manner, and can monitor the oil in the oil tank intermittently, regularly or substantially in real time, obtain various parameter information in the oil, and analyze the detection results. The oil online monitoring device of the utility model can not only overcome the problems of long oil offline detection cycle, failure to reflect equipment problems in time, increased cost of professional technicians and risk of on-site personnel intervention, overcome the defects of relatively long and high cost of the required equipment, personnel, measurement and feedback cycles, and some parameters cannot reflect the real-time or substantially real-time operating conditions of the equipment in time, overcome the defects of portable equipment unable to achieve real-time or substantially real-time monitoring, limited monitoring parameters, and deep-seated faults and risks of oil are not easy to identify in time, etc.; and can also provide some benefits of online monitoring, such as online pressure sensor monitoring, online oil leakage monitoring, etc. Not only that, the online oil monitoring equipment of the present invention can also achieve more benefits of simulated offline detection, such as "online" (essentially offline) replacement of sensors, "online" (essentially offline) maintenance of sensors, "online" (essentially offline) calibration of sensors, and so on.

[0063] More embodiments of the present invention can also achieve other advantageous technical effects that are not listed one by one. These other technical effects may be partially described below and are predictable and understandable to those skilled in the art after reading the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] By referring to the following description together with the accompanying drawings, the above-mentioned features and advantages of these embodiments and other features and advantages and the manner in which they are achieved will be more apparent, and the embodiments of the present invention may be better understood.

[0065] Figure 1 It is a schematic diagram of the overall structure and configuration of an oil online monitoring device according to an embodiment of the utility model;

[0066] Figure 2 According to an embodiment of the utility model, it can be used Figure 1 Schematic diagram of the construction and configuration of the offline detection oil tank in the online oil monitoring equipment. DETAILED DESCRIPTION

[0067] In the following description of the drawings and specific embodiments, details of one or more embodiments of the present utility model will be described. From these descriptions, drawings and claims, other features, purposes and advantages of the present utility model can be clearly seen.

[0068] It should be understood that the illustrated and described embodiments are not limited in application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the accompanying drawings. The illustrated embodiments may be other embodiments and may be implemented or executed in various ways. Each example is provided by explaining the disclosed embodiments rather than limiting them. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the various embodiments of the utility model without departing from the scope or essence of the utility model. For example, a feature illustrated or described as part of an embodiment may be used together with another embodiment to still produce another embodiment. Therefore, the utility model discloses such modifications and variations that fall within the scope of the appended claims and their equivalent elements.

[0069] Likewise, it is understood that the phrases and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "include," "comprise," or "have" and variations thereof herein is intended to be open-ended to include the items listed thereafter and their equivalents and additional items.

[0070] In the present invention, unless otherwise specified or limited, the terms "installed", "connected", "connected" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present invention, for ordinary technicians in this field, unless otherwise clearly stipulated and limited, the terms "up", "down", "left", "right", etc., related to orientation and direction, are described in conjunction with the illustrated oil online monitoring device 100 and its components such as the illustrated orientation of the offline detection tank, and the purpose is only to facilitate the description and display of the present invention, and there is no limitation to the present invention.

[0072] The present invention will be further described and illustrated in detail below in conjunction with the accompanying drawings and specific embodiments.

[0073] Figure 1 It is a schematic diagram of the overall structure and configuration of an oil online monitoring device 100 according to an embodiment of the present utility model. Figure 2 According to an embodiment of the utility model, it can be used Figure 1 Schematic diagram of the construction and configuration of the offline detection oil tank in the online oil monitoring equipment.

[0074] like Figure 1-2 As shown, an oil online monitoring device 100 according to an embodiment of the utility model is illustrated, or it can also be called an oil online monitoring device 100 that substantially performs intermittent offline detection operations. The oil online monitoring device 100 of this embodiment may include: an oil main line 10, in which oil flows from a main oil inlet 11 at a first flow rate and flows out from a main oil outlet 12, and the oil main line 10 may be a working line of a device in which the oil works, or a line connected to or extended by a fluid therewith; according to the application or needs, it may or may not form a closed loop or a circuit.

[0075] A metal particle sensor 13, such as a sensor of the model LWTX-4500, etc., can be configured in the main oil line 10, which is suitable for detecting metal particles in the oil, and is preferably configured at a position near the main oil inlet 11 on the main oil line 10, so as to facilitate the detection of relevant meaningful and usable information and parameters of metal particles in the oil. The metal particle sensor 13 is preferably arranged on one end of the vertically installed main oil line 10, so as to prevent particles from being deposited on the pipe wall.

[0076] An oil pump 15 for driving the flow of oil, for example, with an oil pump driver 151, may also be provided in the main oil line 10, wherein the first filter 14 is preferably provided between the oil pump 15 and the metal particle sensor 13, so that the oil is filtered before entering the oil pump 15, which is beneficial to the normal operation and life of the oil pump 15 and the entire device. The oil pump 15 is arranged on the main oil line 10, and can be used to drive the oil to work and / or extract oil samples as needed, reduce system interference, improve sampling efficiency, etc.

[0077] A first filter 14 , preferably a coarse filter, may also be configured in the main oil line 10 , which is configured in the main oil line 10 and is suitable for filtering the oil therein, wherein the first filter 14 is located downstream of the metal particle sensor 13 along the oil flow direction in the main oil line 10 .

[0078] According to one of the innovative concepts of the utility model in this embodiment, the oil online monitoring device 100 may further include: an oil auxiliary monitoring pipeline 20, which is configured so that its auxiliary oil inlet is intermittently connected and disconnected with the oil main pipeline 10 through a valve 30, so that the oil auxiliary monitoring pipeline 20 can be controllably and flexibly in an intermittent online and intermittent offline state and real environment according to the settings or needs, so that the offline detection oil tank 40 connected to the oil auxiliary monitoring pipeline 20 can replace the oil sample through intermittent online, and can create a real offline environment through intermittent offline, so as to perform more accurate and precise sensing, as well as other operations such as sensor calibration and replacement, etc., as described in detail below.

[0079] like Figure 1-2 As shown, an offline detection oil tank 40 connected to the auxiliary oil monitoring pipeline 20 is provided in the flow path of the auxiliary oil monitoring pipeline 20, which is configured to simulate (substantially form) a real offline detection environment of the oil, and is configured to be provided in the offline detection oil tank 40. The first filter type suitable for sensing the viscosity of the oil can be a conventional coarse filter. With the help of a controllable, preferably automatically controllable valve 30 such as a solenoid valve, etc., the oil can intermittently flow into the auxiliary oil monitoring pipeline 20 and the offline detection oil tank 40 through the auxiliary oil inlet 21 of the auxiliary oil monitoring pipeline 20, and flow out through the auxiliary oil outlet 22 of the auxiliary oil monitoring pipeline 20. In other words, by, for example, pre-set, remotely controllable, automated on / off switching of the valve 30, the offline detection oil tank 40 can be flexibly and conveniently switched between the following two states: (1) a state of intermittent connection with the main oil line 10, in which the old oil in the offline detection oil tank 40 can be replaced with new oil and filled with new oil; and (2) a state of intermittent disconnection from the main oil line 10, in which the offline detection oil tank 40 can simulate (i.e., substantially form / realize) an offline detection environment for the oil.

[0080] According to an example, on the one hand, in order to filter the oil itself to further remove unnecessary impurities such as finer particles, sludge and bubbles, and on the other hand, in order to facilitate the sensor to sense the oil more accurately and precisely and extend the service life or maintenance cycle of the sensor, the oil online monitoring device 100 may also preferably include a second filter 16, which is arranged in the oil auxiliary monitoring pipeline 20 and is suitable for filtering the oil therein, wherein the second filter 16 is located upstream of the offline detection tank 40 along the oil flow direction in the oil auxiliary monitoring pipeline 20, so that it can be ensured that the oil passes through the second filtration of the second filter 16 before entering the offline detection tank 40, especially fine filtration. In the present utility model, the setting of double filters is preferred, wherein the first filter type can be a conventional coarse filter, preferably with a filter cup; the second filter type can be a fine filter. The second filter in the form of fine filtration can be, for example, a hydraulic filter (with a filter cup) to filter out finer particles, including metal particles, dust, sludge, and especially bubbles, etc., and can reduce vibration; since the window of the moisture sensor 46 cannot be contaminated by sludge, and the resonance plate of the viscosity sensor 45 cannot be contaminated by sludge, otherwise the detection accuracy and life of the sensor will be adversely affected. The presence of bubbles has a particularly adverse effect on sensor measurement, and it will generate noise and vibration in the oil auxiliary monitoring pipeline 20 and the offline detection tank 40, affecting the offline detection tank 40 to form an offline sensing environment that is as real and consistent as possible required for detection.

[0081] According to an example, the auxiliary oil monitoring pipeline 20 may be further designed as a pipeline structure with bends, such as a zigzag shape, so as to further reduce the flow rate and impact of the oil in the pipeline.

[0082] If the main oil line 10, the auxiliary oil monitoring line 20 and the offline detection tank 40 are always matched and connected by rigid lines / pipes, since the equipment working with oil usually vibrates or is in a harsh environment with strong vibration during operation, the negative impact of this vibration is very large, which is extremely unfavorable and unnecessary for the sensor measurement in the offline detection tank 40. In this regard, in terms of creating an offline sensing environment that is as real and consistent as possible, in the present utility model, according to an example, the entire auxiliary oil monitoring line 20, or at least a section of the auxiliary oil monitoring line 20 connected to the inlet 41 of the offline detection tank 40, is composed of a hose 21, so that the vibration from the main oil line 10 is basically not transmitted to the offline detection tank 40. As an alternative or as an additional setting, the joint connecting the auxiliary oil monitoring line 20 to the inlet 41 of the offline detection tank 40 is a buffer vibration reduction joint, such as a soft joint or a joint hose, which can further play a role in vibration reduction and buffering.

[0083] like Figure 1-2 As shown, according to one example, the offline detection oil tank 40 can be installed in a small environment of buffering and vibration reduction. For example, the offline detection oil tank 40 can be supported or fixedly installed with a vibration reduction device, such as a vibration reduction bracket 43 with a vibration reduction pad such as a rubber pad 43A, or installed on a buffering and vibration reduction platform, such as a new magnetorheological buffering and vibration reduction platform.

[0084] In order to create a consistent and stable sensing environment and to meet the requirements of national standards, the offline detection oil tank 40 is preferably set to be constant temperature, and a constant temperature controller 44 is provided therein. The temperature of the oil in the offline detection oil tank 40 is controlled by the constant temperature controller within the range of 40°C-100°C, preferably at 40°C. On the one hand, this is a requirement of national standards, and on the other hand, such a temperature is relatively less demanding for test equipment and related equipment, and can be achieved at a lower cost and longer service life. Nevertheless, the utility model also covers an offline detection oil tank 40 with a constant temperature setting of 100°C, which is generally suitable for measuring heavy oil with higher viscosity.

[0085] According to an example, the inlet 41 of the offline detection oil tank 40 is preferably arranged on one side close to the bottom thereof, and the outlet 42 of the offline detection oil tank 40 is preferably arranged on the other side close to the top thereof. The offline detection oil tank 40 is preferably arranged vertically, that is, its oil inlet is at the bottom and the oil outlet is at the top. The advantage of this bottom-in-top-out pipeline interface arrangement is that when the oil auxiliary monitoring pipeline 20 and the offline detection oil tank 40 are connected to the oil main pipeline 10 to replace the old oil sample with the new oil sample so as to facilitate the detection and measurement of the new oil sample, it can be more quickly and reliably ensured that the old oil sample in the offline detection oil tank 40 is cleanly and thoroughly replaced and filled with new oil. In addition, the moisture sensor 46 and the viscosity sensor 45 provided in the offline detection oil tank 40 can be installed, for example, via a sensor mounting seat 47, the base of which is preferably installed vertically, so that the window of the moisture sensor 46 and the resonance plate of the viscosity sensor 45 can be kept free from oil sludge or as little oil sludge as possible. Moreover, when the offline detection oil tank 40 is in a working state, such as in an upright arrangement, the viscosity sensor 45 and the moisture sensor 46 are preferably arranged in an upper and lower manner in the offline detection oil tank 40, so that the oil is not only easy to maintain a constant temperature, but also easy to cover the entire sensor.

[0086] like Figure 1-2As shown, a pressure sensor 17 for detecting oil pressure may also be provided in the main oil line 10. The pressure sensor 17 may be used to monitor whether the main oil line 10 and the equipment using the oil are started and operated normally. Generally speaking, if the pressure in the main oil line 10 detected by the pressure sensor 17 is within a higher pressure value range (which can be set or defined by the user), it indicates normal operation; if the pressure is within a lower pressure value range (which can be set or defined by the user), it indicates that the equipment is faulty or the equipment has stopped operating.

[0087] The main oil line 10 may also be provided with an oil leakage detection sensor 18 for monitoring whether the oil in the main oil line 10 is leaking, and a temperature sensor 60 suitable for collecting oil temperature information. The main oil line 10 may also be provided with an oil quality sensor (not shown) suitable for collecting oil quality information; a density sensor, etc. According to the application and needs, other sensors may be provided in the auxiliary oil monitoring line 20 and the offline detection tank 40 for monitoring / detecting, for example, physical and chemical index parameters in the oil (dielectric constant, water activity, water content, trace moisture, etc.).

[0088] For example, the oil may be hydraulic oil, lubricating oil, turbine oil, gear oil, engine oil, water-based hydraulic oil, and the like.

[0089] According to an example, the metal particle sensor 13 is arranged on a side of the main oil line 10 closer to the main oil inlet 11, so as to facilitate the collection of more realistic particle information and parameters. The pressure sensor 17 is arranged on a side of the main oil line 10 closer to the main oil outlet 12, so as to facilitate the collection of more meaningful and valuable oil pressure information in the main oil line 10.

[0090] According to an example, the oil online monitoring device 100 further includes an outer cover 50, wherein a portion of the oil main line 10, the oil auxiliary monitoring line 20 and the offline detection tank 40 are all located inside the outer cover 50. Figure 1 As shown, it is also installed on the inner side of the outer cover 50 and covered by it, but in some applications, it is more advantageous to install the first filter 14 on the outside of the outer cover 50, so that the first filter 14, which is generally a coarse filter, is more convenient to replace / maintain.

[0091] The first filter 14 may be a coarse filter, and the second filter 16 may be a fine filter, but this is not restrictive.

[0092] The valve 30 can be an electrically actuated or mechanically actuated valve. For example, the valve 30 can be a three-way solenoid valve or an electrically actuated three-way ball valve.

[0093] The inner diameter of the auxiliary oil monitoring line 20 may preferably be greater than the inner diameter of the main oil line 10, so that the second flow rate of the oil in the auxiliary oil monitoring line 20 is less than the first flow rate. For example, according to one example, the inner diameter of the auxiliary oil monitoring line 20 may be set to be more than 1.5 times the inner diameter of the main oil line 10, such as more than 2-3 times.

[0094] According to an example, the flow area of ​​the offline detection tank 40 can be much larger than the flow area of ​​the auxiliary oil monitoring pipeline 20, for example, more than 5 times the flow area of ​​the auxiliary oil monitoring pipeline 20. In this way, the flow rate of the oil entering the offline detection tank 40 will be greatly slowed down, which is beneficial for forming a quasi-offline detection environment of buffering and real consistency, and is necessary for the measurement of the viscosity sensor 45, for example.

[0095] According to an example, the offline testing tank 40 may be further configured to be suitable for performing at least one of sensor maintenance, sensor replacement, and sensor calibration.

[0096] According to one example, the oil online monitoring device 100 further includes a data processing component (model number is, for example, STM32F103C8T6, not shown), which includes a data acquisition interface, a data processing chip and a data sending unit, wherein the data sending unit is configured to support wired and / or wireless transmission, and the data processing component is suitable for communication connection with a host computer.

[0097] According to an example, the oil online monitoring device 100 is configured to perform the simulated offline sensor detection operation intermittently, preferably regularly. Since the valve 30 can be a valve that can be conveniently and automatically remotely controlled or network-controlled, such as a solenoid valve, etc., it is convenient to operate the on and off of the valve 30, so that, for example, the valve 30 is opened for a certain period of time regularly, such as once a day or once a week, so that the new oil sample enters to replace the old oil sample and fill the offline detection tank 40. After that, the valve 30 can be disconnected, and the new oil sample in the offline detection tank 40 can be left to stand for a sufficient period of time, so as to facilitate, for example, the sensor in the offline detection tank 40 to accurately collect relevant parameters in the new oil sample, etc.

[0098] The method for operating the oil online monitoring device 100 of the present invention is as follows.

[0099] Step 1: intermittently connect (e.g., regularly, such as once a day) the valve 30 between the oil main line of the oil online monitoring device 100 and the oil auxiliary monitoring line 20 of the oil online monitoring device 100, so that the oil main line 10 connects the oil auxiliary monitoring line 20 and the offline detection oil tank 40 connected thereto for a period of time, so that the newly inflowing oil (oil sample) replaces the original oil (oil sample) in the offline detection oil tank 40;

[0100] Step 2: After the new oil sample enters to replace the old oil sample and flushes the pipeline and the offline detection oil tank 40 and refills the offline detection oil tank 40, disconnect the connection between the oil main pipeline 10 and the oil auxiliary monitoring pipeline 20 and the offline detection oil tank 40, and let it stand for a sufficient time as needed; and

[0101] Step 3: The disconnection can be maintained, and at least one of the following operations can be performed in the offline testing tank 40: sensor testing, sensor maintenance, sensor replacement, and sensor calibration.

[0102] According to an example, after step 2 and before executing step 3, the disconnection is maintained for a period of time.

[0103] According to one example, intermittent connecting and disconnecting may be performed automatically and periodically.

[0104] According to an example, the method may further include step 4: selectively continuing to maintain disconnection until the next intermittent connection operation.

[0105] According to one example, the oil online monitoring device 100 may also include a data processing component, which is in communication with the acquisition component and the metal particle sensor 13, suitable for receiving quality parameter information and particle information sent by the acquisition component and the metal particle sensor 13, and performing analysis to obtain oil detection results.

[0106] According to one example, the oil online monitoring device 100 further includes a power interface detachably connected to the outer cover 50 and adapted to convert alternating current into direct current so as to power the oil pump and the data processing components.

[0107] According to an example, the oil online monitoring device 100 further includes a network component, which is detachably connected to the outer cover 50 and is suitable for communicating with the optical fiber module 80 via an optical fiber cable.

[0108] According to an example, the metal particles may include at least one of ferromagnetic particles and non-ferromagnetic particles.

[0109] According to one example, the communication connection method between the data processing component and the host computer may include at least one of 4G, 5G, WiFi, Ethernet and Bluetooth.

[0110] The oil online monitoring device and its operation and use method described in the utility model enable online monitoring of oil in a simulated offline manner, and can monitor the oil in the oil tank intermittently, regularly or substantially in real time, obtain various parameter information in the oil, and analyze the test results. The oil online monitoring device of the utility model can not only overcome the problems of long oil offline detection cycle, inability to reflect equipment problems in time, and increased professional and technical personnel costs and risks of on-site personnel intervention, overcome the relatively long and high cost of the required equipment, personnel, measurement and feedback cycles, and some parameters cannot timely reflect the real-time or substantially real-time operating conditions of the equipment, overcome the defects of portable equipment that cannot achieve real-time or substantially real-time monitoring, limited monitoring parameters, and deep-seated faults and risks of oil that are difficult to identify in time, etc.; and can also provide some benefits of online monitoring, such as online pressure sensor monitoring, online oil leakage monitoring, etc. Not only that, the oil online monitoring device of the utility model can also achieve more benefits of simulated offline detection, such as "online" (substantially offline) replacement of sensors, "online" (substantially offline) maintenance of sensors, "online" (substantially offline) calibration of sensors, etc. In other words, the oil online monitoring equipment of the present invention makes it very convenient and more precise to perform at least one of regular sensor sensing (real-time sensor sensing can also be performed as needed), sensor maintenance, sensor replacement and sensor calibration as needed without affecting the normal operation of the oil main line and the application equipment using the oil. This is impossible to achieve in the prior art.

[0111] The configuration / technology of this online oil monitoring equipment combines some of the advantages of online monitoring and offline detection in the prior art. It can not only simulate the ideal environment for offline detection of (partial) oil parameters, but also perform the required substantial offline detection operations (as well as possible offline calibration operations, offline replacement operations, etc.); and the design and configuration of the utility model can reduce or even avoid many defects of online monitoring and offline detection in the prior art.

[0112] The basic concept of the present invention is described above in conjunction with the embodiments, but the above embodiments are only non-limiting descriptions of exemplary embodiments of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, recombinations, mutual combinations and substitutions of technical features are possible for those skilled in the art without departing from the scope of protection of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An oil online monitoring device, characterized in that: The oil online monitoring equipment comprises: an oil main line, in which oil flows in from a main oil inlet at a first flow rate and flows out from a main oil outlet; A first filter, disposed in the main oil line and adapted to filter the oil therein; Wherein, the oil online monitoring equipment further comprises: an auxiliary oil monitoring pipeline, which is configured so that its auxiliary oil inlet is intermittently connected and disconnected with the main oil pipeline through a valve; and an offline detection oil tank connected to the auxiliary oil monitoring pipeline, configured to form an offline detection environment for oil during the period when the auxiliary oil monitoring pipeline is intermittently disconnected from the main oil pipeline, and configured to provide at least one of a viscosity sensor for sensing the viscosity of the oil and a moisture sensor for sensing the water content and / or water activity in the oil in the offline detection oil tank; The oil intermittently flows into the auxiliary oil monitoring pipeline and the offline detection oil tank through the auxiliary oil inlet of the auxiliary oil monitoring pipeline, and flows out through the auxiliary oil outlet of the auxiliary oil monitoring pipeline.

2. The oil online monitoring device according to claim 1, characterized in that: The oil online monitoring device also includes a second filter, which is arranged in the oil auxiliary monitoring pipeline and is suitable for filtering the oil therein, wherein the second filter is located upstream of the offline detection tank along the oil flow direction in the oil auxiliary monitoring pipeline.

3. The oil online monitoring device according to claim 1, characterized in that: At least one section of the auxiliary oil monitoring pipeline connected to the inlet of the offline detection oil tank is formed by a hose; and / or, the joint of the auxiliary oil monitoring pipeline connected to the inlet of the offline detection oil tank is a buffer vibration reduction joint.

4. The oil online monitoring device according to claim 1, characterized in that: The offline detection oil tank is installed on the vibration reduction device.

5. The oil online monitoring device according to claim 1, characterized in that: A constant temperature controller is arranged in the offline detection oil tank.

6. The oil online monitoring device according to claim 1, characterized in that: The inlet of the offline detection oil tank is arranged on one side close to the bottom thereof, and the outlet of the offline detection oil tank is arranged on the other side close to the top thereof.

7. The oil online monitoring device according to claim 1, characterized in that: Both the viscosity sensor and the moisture sensor are arranged in the offline detection oil tank, wherein the position of the viscosity sensor is arranged to be higher than the position of the moisture sensor.

8. The oil online monitoring device according to claim 1, characterized in that: An oil pump for driving the oil to flow is provided in the main oil line; and The metal particle sensor disposed in the main oil line is suitable for detecting metal particles in the oil; wherein the first filter is located downstream of the metal particle sensor and upstream of the oil pump along the oil flow direction in the main oil line.

9. The oil online monitoring device according to any one of claims 1 to 8, characterized in that: At least one of the following items is also provided in the main oil line: A pressure sensor for detecting oil pressure; An oil leakage detection sensor for monitoring whether the oil in the main oil pipeline is leaking; Oil quality sensor, suitable for collecting oil quality information; and The temperature sensor is suitable for collecting the temperature information of the oil.

10. The oil online monitoring device according to any one of claims 1 to 8, characterized in that: The oil online monitoring device also includes an outer cover, wherein a portion of the oil main line, the oil auxiliary monitoring line and the offline detection oil tank are all located on the inner side of the outer cover, and the first filter is installed on the outer side of the outer cover.

11. The oil online monitoring device according to claim 2, characterized in that: The first filter is a coarse filter, and the second filter is a fine filter.

12. The oil online monitoring device according to any one of claims 1 to 8, characterized in that: The valve is an electrically or mechanically actuated valve.

13. The oil online monitoring device according to any one of claims 1 to 8, characterized in that: The inner diameter of the auxiliary oil monitoring pipeline is greater than the inner diameter of the main oil pipeline, so that the second flow rate of the oil in the auxiliary oil monitoring pipeline is less than the first flow rate.

14. The oil online monitoring device according to any one of claims 1 to 8, characterized in that: The flow area of ​​the offline detection oil tank is more than 5 times the flow area of ​​the oil auxiliary monitoring pipeline.

15. The oil online monitoring device according to any one of claims 1 to 8, characterized in that: The offline test tank is further configured to be suitable for at least one of sensor maintenance, sensor replacement, and sensor calibration.

16. The oil online monitoring device according to any one of claims 1 to 8, characterized in that: The oil online monitoring device is configured to periodically perform offline testing in the offline testing tank.

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