Oil monitoring system

Abstract

The utility model provides an oil monitoring system, and relates to the technical field of hydraulic systems. The oil monitoring system comprises an oil storage device, a monitoring unit, a cooling unit and a heating unit. The oil storage device comprises an oil storage cavity used for containing oil. The monitoring unit comprises a circulating pipeline and a first driving pump, a proportional speed regulating valve and an oil liquid monitoring assembly which are arranged on the circulating pipeline, the circulating pipeline is circularly communicated with the oil storage cavity, the first driving pump is used for driving oil liquid to flow between the circulating pipeline and the oil storage device, and the proportional speed regulating valve is used for regulating and controlling the flow of the oil liquid in the circulating pipeline; the cooling unit comprises a cold supply device, a second driving pump and a cold supply pipeline, and the cold supply pipeline penetrates through the oil storage cavity; the heating unit is arranged in the oil storage cavity. According to the oil liquid monitoring system, changes of the oil liquid state are found in time through the monitoring unit, response and control over the oil liquid state are achieved through intelligent adjustment of the proportional speed regulating valve, the cooling unit and the heating unit, and the stability of a hydraulic system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic systems, in particular to an oil monitoring system. BACKGROUND

[0002] In a hydraulic system, oil is a working medium for transmitting energy, and plays a role in transmitting and converting energy in the hydraulic system. Correspondingly, the monitoring of oil is also an essential link.

[0003] The conventional oil monitoring device usually includes a sensor, which determines the oil state by monitoring the oil temperature, flow rate, etc. When the oil state is abnormal, manual adjustment of the oil is required. However, the conventional oil monitoring and adjustment method has the disadvantages of lagging reaction time and low efficiency. CONTENT OF THE INVENTION

[0004] In view of the above problems, the present application provides an oil monitoring system, which can timely discover abnormal changes in the oil state, realize rapid response and control of the oil state, and improve the stability and reliability of the hydraulic system.

[0005] The present application provides an oil monitoring system, comprising:

[0006] An oil storage device, which comprises an oil storage cavity for containing oil;

[0007] A monitoring unit, which comprises a circulation pipeline and a first driving pump, a proportional speed regulating valve and an oil monitoring assembly arranged on the circulation pipeline, the circulation pipeline is in circulation communication with the oil storage cavity, the first driving pump is used to drive the oil to flow between the circulation pipeline and the oil storage device, the proportional speed regulating valve is used to regulate the oil flow in the circulation pipeline, and the oil monitoring assembly is at least configured to monitor the oil temperature, pressure and flow in the circulation pipeline;

[0008] A cooling unit, which comprises a cooling device, a second driving pump and a cooling pipeline, the cooling pipeline is arranged in the oil storage cavity, the inlet end and the outlet end of the cooling pipeline are in communication with the cooling device, and the second driving pump is used to drive the cooling liquid to flow in the cooling pipeline;

[0009] A heating unit arranged in the oil storage cavity to heat the oil, and the heating power of the heating unit is adjustable.

[0010] In a possible implementation, the oil monitoring assembly comprises:

[0011] A temperature monitoring device for monitoring the oil temperature in the circulation pipeline;

[0012] A pressure monitoring device for monitoring the oil pressure in the circulation pipeline;

[0013] A flow monitoring device is arranged on the circulation pipeline to monitor the flow of the oil in the circulation pipeline.

[0014] In a possible implementation, the oil monitoring assembly further comprises:

[0015] A moisture monitoring device is arranged on the circulation pipeline to monitor the moisture content of the oil in the circulation pipeline.

[0016] In a possible implementation, the oil monitoring assembly further comprises:

[0017] A contamination monitoring device is arranged on the circulation pipeline to monitor the contamination of the oil in the circulation pipeline.

[0018] In a possible implementation, the monitoring unit further comprises an overflow valve, an inlet of the overflow valve is connected with the circulation pipeline, and an outlet of the overflow valve is connected with the oil storage device, and the overflow valve is configured to regulate the pressure in the circulation pipeline.

[0019] In a possible implementation, the monitoring unit further comprises a one-way valve, the one-way valve is arranged on the circulation pipeline, and the one-way valve is arranged on the downstream side of the first driving pump.

[0020] In a possible implementation, the part of the cold supply pipeline in the oil storage cavity is formed as a cooling coil.

[0021] In a possible implementation, the heating unit comprises a first heating member and a second heating member, the first heating member and the second heating member have different heating powers, and the first heating member and the second heating member are configured to work independently of each other.

[0022] In a possible implementation, the oil monitoring system further comprises a control device, the control device is communicatively connected with the monitoring unit, the cooling unit and the heating unit respectively, and the control device is configured to control the operating states of the cooling unit and the heating unit according to the monitoring result of the monitoring unit.

[0023] In a possible implementation, the oil monitoring system further comprises:

[0024] An air filtering device is arranged on the oil storage device, and the air filtering device is configured to balance the air pressure inside and outside the oil storage device; and / or,

[0025] An alarm device is arranged on the oil storage device, and the alarm device is configured to issue an alarm when the monitoring unit monitors that the temperature of the oil exceeds a preset value.

[0026] The oil liquid monitoring system of the embodiment of the present application can discover abnormal changes of the oil liquid state in time, such as too high temperature, abnormal pressure and the like, through real-time monitoring of the oil liquid monitoring assembly, and realizes rapid response and control of the oil liquid state through intelligent adjustment of the proportional speed regulating valve, the cooling unit and the heating unit, thereby ensuring good state of the oil liquid, reducing equipment failure, and improving stability and reliability of the hydraulic system. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] Figure 1 FIG. 1 is a schematic diagram of an oil liquid monitoring system according to an embodiment of the present application.

[0029] Explanation of reference signs:

[0030] 100 - oil storage device;

[0031] 200 - monitoring unit; 200a - circulation pipeline; 210 - first driving pump; 220 - proportional speed regulating valve; 230 - oil liquid monitoring assembly; 231 - temperature monitoring device; 232 - pressure monitoring device; 233 - flow monitoring device; 234 - moisture monitoring device; 235 - contamination monitoring device; 240 - overflow valve; 250 - one-way valve;

[0032] 300 - cooling unit; 310 - cooling device; 320 - second driving pump; 330 - cooling pipeline; 331 - cooling coil;

[0033] 400 - heating unit; 410 - first heating element; 420 - second heating element;

[0034] 500 - air filtering device;

[0035] 600 - alarm device. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more apparent and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the hydraulic system, the oil is the working medium for transmitting energy, which plays a role in transmitting and converting energy in the hydraulic system. In some situations, such as the hydraulic system of coal mine equipment, due to the harsh working environment, if the oil is not monitored in time, it may cause the hydraulic system to stop production unplanned, affecting the efficiency. Therefore, the monitoring of the oil in the hydraulic system is also an essential link.

[0038] The traditional oil monitoring device usually includes a sensor, which determines the state of the oil by monitoring the temperature, flow rate, etc. of the oil. When the state of the oil is abnormal, manual adjustment of the oil is required. Specifically, an oil monitoring sensor is added to monitor the working data of the hydraulic system, the working data is analyzed to determine the working condition of the equipment, and if the trend of the equipment working parameters is abnormal, a maintenance plan is developed for processing, reducing the damage of the hydraulic components and even the paralysis of the entire hydraulic system. However, the traditional oil monitoring and adjustment method has the disadvantages of reaction time lag and low efficiency.

[0039] Therefore, the present application provides an oil monitoring system, which can timely discover abnormal changes in the state of the oil, such as excessive temperature and abnormal pressure, through real-time monitoring of the oil monitoring assembly, and realize rapid response and control of the state of the oil through intelligent adjustment of the proportional speed regulating valve, the cooling unit and the heating unit, thereby ensuring the good state of the oil, reducing equipment failure, and improving the stability and reliability of the hydraulic system.

[0040] The oil monitoring system of the present application is described below. Figure 1 The oil monitoring system of the present application is described below.

[0041] With reference to Figure 1 The oil monitoring system of the present application includes an oil storage device 100, a monitoring unit 200, a cooling unit 300 and a heating unit 400.

[0042] The oil storage device 100 includes an oil storage cavity for containing oil; the monitoring unit 200 includes a circulating pipeline 200a and a first driving pump 210, a proportional speed regulating valve 220 and an oil monitoring assembly 230 arranged on the circulating pipeline 200a, the circulating pipeline 200a is in circulation communication with the oil storage cavity, the first driving pump 210 is used to drive the oil to flow between the circulating pipeline 200a and the oil storage device 100, the proportional speed regulating valve 220 is used to regulate the flow of the oil in the circulating pipeline 200a, and the oil monitoring assembly 230 is at least configured to monitor the temperature, pressure and flow of the oil in the circulating pipeline 200a.

[0043] The cooling unit 300 comprises a cooling device 310, a second driving pump 320 and a cooling pipeline 330, the cooling pipeline 330 is arranged in the oil storage cavity, the inlet end and the outlet end of the cooling pipeline 330 are communicated with the cooling device 310, and the second driving pump 320 is used for driving the cooling liquid to flow in the cooling pipeline 330; the heating unit 400 is arranged in the oil storage cavity to heat the oil liquid, and the heating power of the heating unit 400 is adjustable.

[0044] Specifically, in an example, when the monitoring device monitors that the oil liquid temperature is lower than the preset value by more than 3℃, the heating unit 400 heats the oil liquid at high power; when the oil liquid temperature is lower than the preset value by 0-3℃, the heating unit 400 heats the oil liquid at low power; when the oil liquid temperature is higher than the preset value by more than 2℃, the heating unit 400 is closed, and the cooling unit 300 cools the oil liquid until the oil liquid temperature is between 0-1℃.

[0045] Through the real-time monitoring of the oil liquid monitoring assembly 230, abnormal changes of the oil liquid state, such as excessively high temperature and abnormal pressure, can be found in time, and the intelligent adjustment of the proportional speed regulating valve 220, the cooling unit 300 and the heating unit 400 realizes the rapid response and control of the oil liquid state, ensures the good state of the oil liquid, reduces the occurrence of equipment failure, and improves the stability and reliability of the hydraulic system.

[0046] Optionally, the cooling unit 300 can also realize oil liquid cooling in a wind cooling mode.

[0047] Optionally, the proportional speed regulating valve 220 can also be a throttle valve, a multi-way valve and the like.

[0048] In some embodiments, in combination with Figure 1 The oil liquid monitoring assembly 230 comprises a temperature monitoring device 231, a pressure monitoring device 232 and a flow monitoring device 233, specifically, the temperature monitoring device 231 is used for monitoring the oil liquid temperature in the circulating pipeline 200a; the pressure monitoring device 232 is used for monitoring the oil liquid pressure in the circulating pipeline 200a; and the flow monitoring device 233 is used for monitoring the oil liquid flow in the circulating pipeline 200a.

[0049] Through the integration of the temperature monitoring device 231, the pressure monitoring device 232 and the flow monitoring device 233, the oil liquid monitoring assembly 230 can improve the monitoring precision of the oil liquid state, is helpful for finding and processing abnormal changes of the oil liquid state in time, and ensures the normal operation of the hydraulic system by monitoring the key parameters such as the temperature, the pressure and the flow of the oil liquid in real time, and ensures the work efficiency.

[0050] Optionally, in combination with Figure 1In some embodiments, in combination with the above,

[0051] In some embodiments, in combination with the above, Figure 1 The oil monitoring assembly 230 further comprises a water content monitoring device 234 arranged on the circulating pipeline 200a for monitoring the water content in the oil in the circulating pipeline 200a.

[0052] The water content monitoring device 234 is mainly used to monitor the water content of the oil in the circulating pipeline 200a. Excessive water content may cause problems such as oil emulsification, accelerated oxidation, and reduced lubrication performance, thereby affecting the performance and service life of the equipment. By adding the water content monitoring device 234, the oil monitoring system can achieve comprehensive and accurate monitoring of the state of the oil.

[0053] In some embodiments, in combination with the above, Figure 1 The oil monitoring assembly 230 further comprises a contamination monitoring device 235 arranged on the circulating pipeline 200a for monitoring the contamination of the oil in the circulating pipeline 200a. The arrangement of the contamination monitoring device 235 improves the comprehensiveness of the oil monitoring system in monitoring the state of the oil, and improves the reliability of the hydraulic system.

[0054] In some embodiments, in combination with the above, Figure 1 The monitoring unit 200 further comprises an overflow valve 240, the inlet of the overflow valve 240 is connected with the circulating pipeline 200a, and the outlet of the overflow valve 240 is connected with the oil storage device 100. The overflow valve 240 is used to adjust the pressure in the circulating pipeline 200a. In this way, the pressure in the circulating pipeline 200a can be controlled and adjusted to ensure that the oil circulates within a safe pressure range.

[0055] In some embodiments, in combination with the above, Figure 1 The monitoring unit 200 further comprises a one-way valve 250 arranged on the circulating pipeline 200a. The one-way valve 250 is arranged on the downstream side of the first drive pump 210 to ensure the one-way flow of the oil in the circulating pipeline 200a, prevent backflow and mixing of the oil, and thus protect the stable operation of the hydraulic system.

[0056] In some embodiments, in combination with the above, Figure 1 The part of the cooling pipeline 330 located in the oil storage cavity is formed into a cooling coil 331. For example, the cooling coil 331 can be arranged in a stacked or wavy manner. The cooling coil 331 increases the contact area with the oil in the oil storage cavity and improves the heat exchange efficiency. When the cooling medium (such as cooling water or refrigerant) flows in the coil, it can absorb the heat in the oil and carry it away, thereby assisting the oil cooling.

[0057] In some embodiments, in combination Figure 1 The heating unit 400 comprises a first heating member 410 and a second heating member 420, the heating power of the first heating member 410 and the second heating member 420 is different, and the first heating member 410 and the second heating member 420 are configured to work independently of each other.

[0058] Optionally, the heating power of the first heating member 410 is greater than the heating power of the second heating member 420.

[0059] For example, when the monitoring device monitors that the oil temperature is lower than the preset value by more than 3℃, the first heating member 410 and the second heating member 420 are turned on to heat the oil, realizing high heating power heating; when the oil temperature is lower than the preset value by 0-3℃, the first heating member 410 is turned off and only the second heating member 420 is left to heat the oil, realizing low heating power heating. The design of the first heating member 410 and the second heating member 420 improves the accuracy and flexibility of temperature control.

[0060] Optionally, in combination Figure 1 The cooling coil 331 is arranged between the first heating member 410 and the second heating member 420. Further, the first heating member 410 and the second heating member 420 are arranged in sequence along the flow direction of the oil.

[0061] When the oil flows through the first heating member 410, the temperature will rise, then the oil flows through the cooling coil 331, the cooling liquid in the cooling coil 331 exchanges heat to reduce the temperature, finally, the oil passes through the second heating member 420 for fine adjustment to reach or approach the target temperature. Accurate adjustment of the oil temperature is realized, avoiding overheating or overcooling, and the temperature stability of the hydraulic system is improved, making the temperature change of the oil in the flow process more stable. By arranging the cooling coil 331 between the heating members, the efficiency of the hydraulic system is improved.

[0062] In some embodiments, in combination Figure 1 The oil monitoring system further comprises a control device, the control device is in communication connection with the monitoring unit 200, the cooling unit 300 and the heating unit 400 respectively, and the control device is configured to control the operating state of the cooling unit 300 and the heating unit 400 according to the monitoring result of the monitoring unit 200.

[0063] By communicating with the monitoring unit 200, cooling unit 300, and heating unit 400 respectively, the control device can receive monitoring data from the monitoring unit 200. Through data processing and analysis, the control device determines whether the oil condition is within the normal range. According to a preset program, the control device can adjust the operating status of the cooling unit 300 and heating unit 400 to regulate the oil temperature, thus achieving automation and intelligence in the oil monitoring system.

[0064] In some embodiments, combined with Figure 1 The oil monitoring system also includes an air filter 500 and / or an alarm device 600. The air filter 500 is located in the oil storage device 100. The air filter 500 is used to balance the air pressure inside and outside the oil storage device 100, prevent oil leakage or contamination caused by air pressure differences, and also ensure the cleanliness of the flowing air to ensure the cleanliness of the oil.

[0065] An alarm device 600 is installed in the oil storage device 100. The alarm device 600 is configured to issue an alarm when the monitoring unit 200 detects that the oil temperature exceeds a preset value. For example, when the monitoring device detects that the oil temperature is more than 5°C higher than the preset value, the alarm device 600 will issue an alarm to remind the operator to manually adjust the oil temperature to prevent equipment failure or safety accidents caused by excessively high oil temperature.

[0066] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0067] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0068] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0069] It should be readily understood that "on," "over," and "above" in the present disclosure should be interpreted in the broadest manner such that "on" means not only "directly on" but also includes the meaning of "on" with intervening features or layers therebetween, and "over" or "above" includes not only the meaning of "over" or "above" but also the meaning of "over" or "above" with no intervening features or layers therebetween (i.e., directly on).

[0070] Finally, it should be noted that the above-described embodiments are merely intended to illustrate the technical solutions of the present application, but not to limit the same; even though the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions recorded in the foregoing embodiments, or equivalent replacements can be made to some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An oil monitoring system, characterized by The application relates to an oil monitoring system, comprising: an oil storage device (100) comprising an oil storage cavity for containing oil; a monitoring unit (200) comprising a circulating pipeline (200a) in circulation communication with the oil storage cavity, a first driving pump (210) arranged on the circulating pipeline (200a) and used for driving the oil to flow between the circulating pipeline (200a) and the oil storage device (100), a proportional speed regulating valve (220) arranged on the circulating pipeline (200a) and used for regulating the oil flow in the circulating pipeline (200a), and an oil monitoring assembly (230) arranged on the circulating pipeline (200a) and used for monitoring at least the oil temperature, pressure and flow in the circulating pipeline (200a); a cooling unit (300) comprising a cooling device (310), a second driving pump (320) and a cooling pipeline (330), wherein the cooling pipeline (330) is arranged in the oil storage cavity, the inlet end and the outlet end of the cooling pipeline (330) are in communication with the cooling device (310), and the second driving pump (320) is used for driving the cooling liquid to flow in the cooling pipeline (330); a heating unit (400) arranged in the oil storage cavity and used for heating the oil, wherein the heating power of the heating unit (400) is adjustable.

2. The oil monitoring system of claim 1, wherein The oil monitoring assembly (230) comprises: a temperature monitoring device (231) used for monitoring the oil temperature in the circulating pipeline (200a); a pressure monitoring device (232) used for monitoring the oil pressure in the circulating pipeline (200a); a flow monitoring device (233) used for monitoring the oil flow in the circulating pipeline (200a).

3. The oil monitoring system according to claim 1 or 2, characterized in that The oil monitoring assembly (230) further comprises: a moisture monitoring device (234) arranged on the circulating pipeline (200a) and used for monitoring the moisture content in the oil in the circulating pipeline (200a).

4. The oil monitoring system according to claim 1 or 2, characterized in that The oil monitoring assembly (230) further comprises: a contamination degree monitoring device (235) arranged on the circulating pipeline (200a) and used for monitoring the contamination degree of the oil in the circulating pipeline (200a).

5. The oil monitoring system of claim 1 or 2, wherein The monitoring unit (200) further comprises an overflow valve (240), wherein the inlet of the overflow valve (240) is connected with the circulating pipeline (200a), the outlet of the overflow valve (240) is connected with the oil storage device (100), and the overflow valve (240) is used for adjusting the pressure in the circulating pipeline (200a).

6. The oil monitoring system of claim 1 or 2, wherein The monitoring unit (200) further comprises a one-way valve (250), wherein the one-way valve (250) is arranged on the circulating pipeline (200a) and is arranged on the downstream side of the first driving pump (210).

7. The oil monitoring system of claim 1 or 2, wherein The part of the cooling pipeline (330) arranged in the oil storage cavity is formed into a cooling coil (331).

8. The oil monitoring system of claim 1 or 2, wherein The heating unit (400) comprises a first heating member (410) and a second heating member (420), the heating powers of the first heating member (410) and the second heating member (420) are different, and the first heating member (410) and the second heating member (420) are configured to work independently of each other.

9. The oil monitoring system of claim 1 or 2, wherein Further comprising: A control device is in communication connection with the monitoring unit (200), the cooling unit (300) and the heating unit (400) respectively, and the control device is configured to control the operating state of the cooling unit (300) and the heating unit (400) according to the monitoring result of the monitoring unit (200).

10. The oil monitoring system of claim 1 or 2, wherein Further comprising: An air filtering device (500) is arranged in the oil storage device (100), and the air filtering device (500) is used to balance the air pressure inside and outside the oil storage device (100); and / or, An alarm device (600) is arranged in the oil storage device (100), and the alarm device (600) is configured to issue an alarm when the monitoring unit (200) monitors that the temperature of the oil exceeds a preset value.

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