Monitoring device for hydraulic oil tank

Abstract

The utility model provides a monitoring device for a hydraulic oil tank. The monitoring device is used for monitoring oil quality and liquid level height of hydraulic oil in the hydraulic oil tank. The monitoring device comprises a liquid level sensor, an oil quality detection sensor and a data acquisition module. The liquid level sensor is arranged in the hydraulic oil tank and measures the height of the liquid level. The oil quality detection sensor is arranged in the hydraulic oil tank and monitors oil quality. The data acquisition module is in communication connection with the liquid level sensor and the oil quality detection sensor. The liquid level sensor is used for detecting the liquid level height of hydraulic oil in the hydraulic oil tank, and meanwhile liquid level changes in the oil tank can be found in time when leaked water is mixed in the hydraulic oil. Detection of hydraulic oil in the machine tool hydraulic oil tank is achieved in a double-detection mode, monitoring accuracy is improved, and safe operation of a machine tool hydraulic system is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic oil monitoring technology, specifically to a monitoring device for hydraulic oil tanks. Background Technology

[0002] Machine tools require a large amount of hydraulic oil to perform hydrostatic and lubrication functions, and internal cooling and spraying functions are achieved through water circulation. If the circulating water pipeline leaks, a large amount of water will flow back to the oil tank along with the hydraulic oil. If water or other substances are mixed into the hydraulic oil tank of a machine tool, or if the oil temperature is too high or the oil is used repeatedly for too long, the quality of the hydraulic oil will change, causing damage to the equipment. For example, deteriorated hydraulic oil has insufficient oil film strength to withstand the pressure of the working load, causing metal surfaces to come into contact, resulting in a sharp increase in friction and accelerating the damage of parts. Decreased lubrication performance of the hydraulic oil leads to wear on the internal meshing surfaces of the hydraulic pump and hydraulic motor. Therefore, timely detection of water contamination in the hydraulic oil tank is crucial for the normal operation of the machine tool. Existing methods for detecting hydraulic oil in the hydraulic tank are often limited to single oil quality testing devices, which are prone to inaccurate detection. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention provides a monitoring device for hydraulic oil tanks to improve the technical problem that the existing methods for detecting hydraulic oil in hydraulic oil tanks are limited and easily lead to inaccurate detection results.

[0004] To achieve the above and other related objectives, this utility model provides a monitoring device for a hydraulic oil tank, used to monitor the quality and level of hydraulic oil in the tank. The monitoring device includes a level sensor, an oil quality detection sensor, and a data acquisition module. The level sensor is installed inside the hydraulic oil tank and monitors the oil level. The oil quality detection sensor is installed inside the hydraulic oil tank and monitors the oil quality. The data acquisition module is communicatively connected to the level sensor and the oil quality detection sensor.

[0005] In one embodiment of the monitoring device of this utility model, the monitoring device further includes an alarm device, which is installed outside the hydraulic oil tank and is communicatively connected to the data acquisition module.

[0006] In one embodiment of the monitoring device of this utility model, the alarm device includes a buzzer, which is installed on the upper part of the hydraulic oil tank.

[0007] In one embodiment of the monitoring device of this utility model, the alarm device further includes an indicator light, which is installed on the upper part of the hydraulic oil tank.

[0008] In one embodiment of the monitoring device of this utility model, the buzzer and the indicator light are an integrated structure.

[0009] In one embodiment of the monitoring device of this utility model, the monitoring device further includes a display, which is communicatively connected to the data acquisition module.

[0010] In one embodiment of the monitoring device of this utility model, the data acquisition module is communicatively connected to the machine tool control system.

[0011] In one embodiment of the monitoring device of this utility model, the detection end of the oil quality detection sensor is located inside the hydraulic oil tank and at the oil outlet of the hydraulic oil tank.

[0012] In one embodiment of the monitoring device of this utility model, the liquid level sensor is a capacitive liquid level sensor.

[0013] In one embodiment of the monitoring device of this utility model, the oil quality detection sensor is an oil liquid quality sensor.

[0014] This invention discloses a monitoring device for hydraulic oil tanks, which integrates an oil quality sensor and a level sensor. The oil quality sensor detects the quality of the hydraulic oil, while the level sensor detects not only the hydraulic oil level in the tank but also promptly identifies changes in the oil level when water leaks into the hydraulic oil. This dual-detection approach improves the accuracy of monitoring and ensures the safe operation of the machine tool's hydraulic system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the installation structure of some components in one embodiment of the monitoring device of this utility model;

[0017] Figure 2 This is a structural diagram of one embodiment of the monitoring device of this utility model.

[0018] Component designation explanation:

[0019] 100. Hydraulic oil tank; 200. Liquid level sensor; 300. Oil quality detection sensor; 400. Data acquisition module; 500. Alarm device; 510. Buzzer; 520. Indicator light; 600. Display; 700. Machine tool control system. Detailed Implementation

[0020] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0021] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0022] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0023] To address the problem that existing methods for detecting hydraulic oil in hydraulic tanks are limited and prone to inaccurate results, this invention provides a monitoring device for hydraulic oil tanks. This device employs a dual-detection approach to detect the hydraulic oil in machine tool hydraulic tanks, improving monitoring accuracy and ensuring the safe operation of the machine tool's hydraulic system.

[0024] Please see Figures 1 to 2This invention provides a monitoring device for a hydraulic oil tank. This device monitors the quality and level of the hydraulic oil in the hydraulic oil tank 100 to ensure the normal operation of the hydraulic system. The monitoring device includes a level sensor 200, an oil quality detection sensor 300, and a data acquisition module 400. The hydraulic oil tank 100 is typically designed as a shell structure with sufficient strength and rigidity to withstand the pressure of the internal hydraulic oil. Mounting holes are provided on the hydraulic oil tank 100 for mounting the level sensor 200. The detection end of the level sensor 200 is located inside the hydraulic oil tank 100 and is used to detect the level of the hydraulic oil in the tank, ensuring sufficient hydraulic oil and preventing machine tool malfunctions due to low oil levels. Simultaneously, when circulating water leaks into the hydraulic oil tank 100, causing an increase in the hydraulic oil level, the device promptly monitors the level change and issues an early warning signal for abnormal level changes. The type of level sensor 200 is not limited; it can be any suitable sensor type that meets the requirements for level detection. For example, the liquid level sensor 200 can be a float-type liquid level sensor, a pressure-type liquid level sensor, a capacitive liquid level sensor, an ultrasonic liquid level sensor, a photoelectric liquid level sensor, a radar liquid level sensor, etc., and the liquid level sensor 200 can be obtained through general commercial means.

[0025] An oil quality sensor 300 is also mounted on the hydraulic oil tank 100. The sensing end of the oil quality sensor 300 is located within the hydraulic oil tank 100 and within the hydraulic oil to monitor the quality of the hydraulic oil. The type of oil quality sensor 300 is not limited; it can be any suitable sensor type that meets the function of oil quality detection. For example, the oil quality sensor 300 can be an oil quality sensor, an online water content monitoring sensor, a dielectric constant sensor, etc. The oil quality sensor 300 can be obtained through general commercial means.

[0026] The data acquisition module 400, as the core of the entire monitoring device, is responsible for collecting data from the liquid level sensor 200 and the oil quality detection sensor 300. The data acquisition module 400 can communicate with the liquid level sensor 200 and the oil quality detection sensor 300 through wired or wireless communication technology. The data acquisition module 400 processes and analyzes the received signals, and judges whether the liquid level and oil quality are within the normal range according to the set threshold, so as to realize the online detection of the liquid level and oil quality of the hydraulic oil in the hydraulic oil tank 100.

[0027] An oil quality sensor 300 and a level sensor 200 are integrated and installed on the hydraulic oil tank 100. The oil quality sensor 300 detects the quality information of the hydraulic oil and converts this information into an electrical signal, which is then sent to the data acquisition module 400. The level sensor 200 detects the hydraulic oil level in the hydraulic oil tank 100 and converts this information into an electrical signal, which is also sent to the data acquisition module 400. The data acquisition module 400 analyzes the data to determine whether the level and oil quality are within the normal range. This dual detection method improves the accuracy of monitoring the hydraulic oil in the machine tool's hydraulic tank 100 and ensures the safe operation of the machine tool's hydraulic system.

[0028] Please see Figure 1 In one embodiment of the monitoring device of this utility model, the monitoring device further includes an alarm device 500, which is installed outside the hydraulic oil tank 100 and communicatively connected to the data acquisition module 400. When the data acquisition module 400 detects abnormal changes in liquid level or oil quality, it controls the alarm device 500 to immediately sound an alarm, which can quickly locate the equipment position and improve the operator's response speed. The alarm device 500 has no limitation on the alarm form and can adopt visual or auditory alarm. Specifically, in this embodiment, the alarm device 500 includes a buzzer 510, which is installed on the upper part of the hydraulic oil tank 100 and provides an audible alarm signal. Furthermore, the alarm device 500 also includes an indicator light 520, which is installed on the upper part of the hydraulic oil tank 100 and provides a visual alarm signal. The high-position installation of the buzzer 510 and the indicator light 520 makes the alarm signal easily noticeable by the operator. This helps to reduce the omission of alarm signals and improve the alarm response speed. The combined use of the buzzer 510 and indicator light 520 provides dual alarm signals of sound and sight, which can quickly attract the operator's attention in different working environments.

[0029] To simplify installation and maintenance, in this embodiment, the buzzer 510 and indicator light 520 are integrated into a single unit, reducing the complexity of wiring layout and connections between multiple independent components. This lowers the risk of system failure due to connection issues and enhances system reliability. It should be noted that both the standalone buzzer 510 and indicator light 520, as well as the integrated buzzer 510 and indicator light 520, can be obtained through common commercial means.

[0030] Please see Figure 2In one embodiment of the monitoring device of this utility model, the monitoring device further includes a display 600, which is communicatively connected to the data acquisition module 400. The display 600 provides a display of the liquid level height and oil quality parameter data of the liquid level sensor 200 and the oil quality detection sensor 300, as well as any other relevant information processed by the data acquisition module 400, such as alarm signals, system status, historical data, and trend analysis.

[0031] Please see Figure 2 In one embodiment of the monitoring device of this utility model, the data acquisition module 400 is communicatively connected to the machine tool control system 700. When the oil quality detection sensor 300 detects an abnormality in oil quality, the data acquisition module 400 transmits these abnormal signals to the machine tool control system 700 so that the operator can stop the machine tool to avoid serious equipment damage caused by oil problems and improve production safety.

[0032] Please see Figure 1 In one embodiment of the monitoring device of this utility model, the detection end of the oil quality detection sensor 300 is located inside the hydraulic oil tank 100 and at the oil outlet of the hydraulic oil tank 100. Positioning the detection end of the oil quality detection sensor 300 at the oil outlet of the hydraulic oil tank 100 ensures that the oil quality is monitored in real time after being filtered by the filtration device and before being sent to the machine tool equipment, thus more accurately assessing the actual working state of the oil and ensuring the accuracy of the detection results.

[0033] In one embodiment of the monitoring device of this utility model, the liquid level sensor 200 is a capacitive liquid level sensor. Capacitive liquid level sensors are easy to install and maintain, and are suitable for measuring the liquid level of high-pressure and high-temperature media in the hydraulic oil tank 100. Furthermore, they are simple to install and operate, have a low failure rate, and are easy to maintain.

[0034] In one embodiment of the monitoring device of this utility model, the oil quality detection sensor 300 is an oil fluid quality sensor. The oil fluid quality sensor precisely measures the energy storage capacity (capacitance) and conductivity (conductivity) of the hydraulic oil sample by introducing a high-frequency AC voltage into the sample. The structure and working principle of the oil fluid quality sensor are well-known in the industry, have wide applications, and can be obtained through general commercial means. Therefore, they will not be described in detail here. When the oil quality detection sensor 300 detects an abnormality in oil quality, the data acquisition module 400 sends a warning signal to the machine tool control system 700. After the warning, the operator stops the machine tool and checks for oil malfunctions. This avoids equipment damage caused by oil quality problems, ensures the normal operation of the equipment, and extends its lifespan.

[0035] In this utility model's monitoring device for hydraulic oil tanks, an oil quality sensor and a level sensor are integrated and installed on the hydraulic oil tank. The oil quality sensor detects the quality of the hydraulic oil, while the level sensor not only detects the hydraulic oil level in the tank but also promptly detects changes in the oil level when leaked water is mixed in. This dual detection method improves the accuracy of monitoring and ensures the safe operation of the machine tool's hydraulic system. It addresses the problem of existing methods for detecting hydraulic oil in hydraulic tanks being limited and prone to inaccurate results. Therefore, this utility model effectively overcomes some practical problems in the prior art and has high utilization value and practical significance.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A monitoring device for a hydraulic oil tank, used to monitor the quality and level of hydraulic oil in the tank; characterized in that, The monitoring device includes: A liquid level sensor is installed inside the hydraulic oil tank to monitor the liquid level height; An oil quality detection sensor is installed inside the hydraulic oil tank to monitor the quality of the oil. The data acquisition module is communicatively connected to the liquid level sensor and the oil quality detection sensor.

2. The monitoring device according to claim 1, characterized in that, The monitoring device also includes an alarm device, which is installed outside the hydraulic oil tank and is communicatively connected to the data acquisition module.

3. The monitoring device according to claim 2, characterized in that: The alarm device includes a buzzer, which is installed on the upper part of the hydraulic oil tank.

4. The monitoring device according to claim 3, characterized in that, The alarm device also includes an indicator light, which is installed on the upper part of the hydraulic oil tank.

5. The monitoring device according to claim 4, characterized in that, The buzzer and the indicator light are integrated into one unit.

6. The monitoring device according to claim 2, characterized in that, The monitoring device also includes a display, which is communicatively connected to the data acquisition module.

7. The monitoring device according to claim 1, characterized in that, The data acquisition module is communicatively connected to the machine tool control system.

8. The monitoring device according to claim 1, characterized in that, The detection end of the oil quality detection sensor is located inside the hydraulic oil tank and at the oil outlet of the hydraulic oil tank.

9. The monitoring device according to claim 1, characterized in that, The liquid level sensor is a capacitive liquid level sensor.

10. The monitoring device according to claim 1, characterized in that, The oil quality detection sensor is an oil liquid quality sensor.

Images