A lubricating oil processing and delivery system

Abstract

This utility model relates to the field of lubricating oil processing, and more particularly to a lubricating oil processing and conveying system, including a main pipeline, branch pipelines, an energy metering chip, a controller, and a power management module. A flow quality sensor is installed on the main pipeline to monitor the lubricating oil flowing through it. Branch pipelines branch off from the main pipeline and are equipped with a proportional solenoid valve and a miniature hydraulic generator turbine. The proportional solenoid valve adjusts its opening degree according to a control signal. The miniature hydraulic generator turbine, located inside the branch pipeline, rotates and generates electricity as the lubricating oil flows through it. The controller is connected to the flow quality sensor, the proportional solenoid valve, and the miniature hydraulic generator turbine, respectively, receiving signals from the flow quality sensor and controlling the opening degree of the solenoid valve. The energy metering chip monitors the power generation of the miniature hydraulic generator turbine. This utility model enables simple and accurate flow monitoring and control, has the ability to detect pipeline blockages, and reduces the need for external power supply.

Description

Technical Field

[0001] This utility model relates to the field of lubricating oil processing, and in particular to a lubricating oil processing and delivery system. Background Technology

[0002] In the field of lubricant processing and transportation, precise control of the flow rate in oil pipelines can ensure the stability of lubricant mixing, additive formulation and reaction processes, and guarantee product quality consistency. However, during oil pipeline transportation, impurities such as metal shavings, oxidized gum deposits, base oil wax precipitation, additive precipitation and so on can cause blockages in the oil pipelines. Therefore, flow control and blockage detection of the pipeline system are crucial for the stable operation of equipment.

[0003] Traditional technologies typically use mechanical valves or manual regulating valves to control branch flow, relying on manual experience for adjustment. This results in low adjustment accuracy and slow response speed. While some existing technologies employ control schemes that combine solenoid valves with flow sensors, they do not fully utilize the hydraulic energy of the pipeline, leading to low energy utilization.

[0004] The patent with patent number CN103216266B discloses a pressure detection method to prevent blockage of filling pipelines. However, since the pressure sensor is greatly affected by temperature and oil viscosity fluctuations, it requires frequent calibration and is difficult to adapt to lubricating oil processing and transportation. In addition, deploying multiple sensors in different parts of the oil pipeline to collect data in a coordinated manner significantly increases the cost and system complexity.

[0005] Therefore, it is necessary to further improve a lubricating oil processing and delivery system. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the existing defects and provide a lubricating oil processing and delivery system that can achieve simple and accurate flow monitoring and control, has the ability to detect pipeline blockage, and reduces the external power supply requirement, thus effectively solving the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lubricating oil processing and conveying system, comprising a main pipeline, branch pipelines, an energy metering chip, a controller, and a power management module;

[0008] A fluid quality sensor is installed on the main pipeline to monitor the lubricating oil flowing through it.

[0009] The branch pipeline branches off from the main pipeline and is equipped with a proportional solenoid valve and a miniature hydraulic generator turbine. The proportional solenoid valve is used to adjust its opening degree according to the control signal. The miniature hydraulic generator turbine is installed inside the branch pipeline and is used to rotate and generate electricity when lubricating oil flows through it.

[0010] The controller is connected to the fluid mass sensor, the proportional solenoid valve, and the micro hydraulic generator turbine, respectively, and is used to receive signals from the fluid mass sensor and control the opening degree of the solenoid valve.

[0011] The power metering chip is connected between the controller and the micro hydraulic power generation turbine to monitor the power generation of the micro hydraulic power generation turbine.

[0012] The power management module is connected to the micro hydraulic generator turbine and an external power source, and is used to switch the power supply path and adjust the output voltage.

[0013] Preferably, the power management module includes a micro generator, a rectifier circuit, a voltage regulator circuit, and an energy storage element, used to convert the current output by the micro hydraulic generator turbine into stable working DC power and store it.

[0014] Preferably, the proportional solenoid valve includes a valve core displacement sensor for feedback of the actual displacement of the valve core.

[0015] Preferably, the micro hydraulic generator turbine is a low-speed, large-blade-area mixed-flow turbine with low-pressure start-up characteristics.

[0016] Preferably, the fluid mass sensor is a model that can simultaneously monitor flow rate, temperature, and pressure.

[0017] Preferably, the controller integrates a communication module for sending the flow data, congestion status, and alarm information of each branch to the upper-level monitoring system.

[0018] The working principle and application principle of this utility model are as follows:

[0019] The system integrates main pipeline monitoring and branch pipeline control. In the main pipeline, the lubricating oil's total flow rate (Q1), temperature, and pressure are monitored in real-time by a fluid quality sensor, and the data is transmitted to the controller. Each branch pipeline inlet is equipped with a proportional solenoid valve. The controller outputs analog signals based on main pipeline parameters and a preset distribution strategy, dynamically adjusting the valve opening to achieve precise flow distribution. A valve displacement sensor provides feedback on the actual opening, forming a closed-loop control system to ensure accurate flow regulation.

[0020] Theoretical and actual flow rate verification: Based on the solenoid valve opening, lubricating oil temperature and pressure, the controller calculates the theoretical flow rate Q2 of the branch using the Hagen-Poiseuille law; simultaneously, the miniature hydraulic generator turbine within the branch converts the kinetic energy of the lubricating oil flow into electrical energy. The electricity metering chip monitors the power generation in real time and converts it into the actual flow rate Q3. The controller then compares Q2 with Q3.

[0021] If |Q3-Q2|≤ε (ε is the set error threshold), the branch is considered to be unobstructed;

[0022] If Q2 is much smaller than Q3 (e.g., Q2 < Q3 × 50%), a blockage alarm is triggered and reported to the upper-level system.

[0023] Self-power supply and energy management: A micro hydraulic power generation turbine drives a permanent magnet generator to generate electricity. After rectification and voltage stabilization, it supplies power to the system. The power management module preferentially uses the turbine power, and the excess energy is stored in the super capacitor. When the turbine power is insufficient, the super capacitor or lithium battery supplies supplementary power to ensure the continuous operation of the sensors and solenoid valves.

[0024] Fault diagnosis and communication: The controller regularly uploads the branch ID, flow data, and status flag bits through the integrated communication module, supports event-triggered alarms such as blockage and abnormal flow. The upper-level system can remotely monitor, and maintenance personnel can locate the faulty branch based on the alarm information.

[0025] Adaptive design: The axial flow turbine design is adapted to high-viscosity lubricating oil. The low starting pressure ensures that the power generation function takes effect immediately. The integration of multi-parameter sensors simplifies data acquisition and improves the reliability of the system.

[0026] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0027] By adopting the design of combining a micro hydraulic power generation turbine with an electric energy metering chip, the indirect monitoring of the actual flow rate of the branch pipeline is realized. Through the comparison with the theoretical flow rate, abnormal states such as branch blockage can be detected in a timely manner, improving the reliability and maintenance efficiency of the system.

[0028] Through the closed-loop control of the proportional solenoid valve and the feedback of the spool displacement sensor, combined with the data of the multi-parameter fluid sensors on the main pipeline, the precise adjustment of the flow rate of each branch is realized, improving the accuracy and stability of the lubricating oil distribution.

[0029] The power management module integrates a micro hydraulic power generation turbine, energy storage components, and external power sources, reducing the demand for external power supply, decreasing the dependence on external power sources, and enhancing the continuous operation ability of the system.

[0030] By adopting multi-parameter integrated sensors and industrial-grade controllers on the main pipeline, the system structure is simplified. At the same time, it supports remote communication and real-time data upload, facilitating centralized monitoring and fault diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the overall structural block diagram of the present utility model; <…> Figure 2 is the schematic diagram of the branch closed-loop control principle of the present utility model;

[0033] [[ID=3*]] Figure 3 is the schematic diagram of the energy management module of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENT

[0034] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0035] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or sets.

[0036] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0037] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0038] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0040] Please see Figure 1-3 This utility model provides a technical solution: a lubricating oil processing and conveying system, including a main pipeline, branch pipelines, an energy metering chip, a controller, and a power management module;

[0041] A fluid quality sensor is installed on the main pipeline to monitor the lubricating oil flowing through it.

[0042] The branch pipeline branches off from the main pipeline and is equipped with a proportional solenoid valve and a miniature hydraulic generator turbine. The proportional solenoid valve is used to adjust its opening degree according to the control signal. The miniature hydraulic generator turbine is installed inside the branch pipeline and is used to rotate and generate electricity when lubricating oil flows through it.

[0043] The controller is connected to the fluid mass sensor, the proportional solenoid valve, and the micro hydraulic generator turbine, respectively, and is used to receive signals from the fluid mass sensor and control the opening degree of the solenoid valve.

[0044] The power metering chip is connected between the controller and the micro hydraulic power generation turbine to monitor the power generation of the micro hydraulic power generation turbine.

[0045] The power management module is connected to the micro hydraulic generator turbine and an external power source, and is used to switch the power supply path and adjust the output voltage.

[0046] Specifically, the lubricating oil processing and delivery system includes a main pipeline and several branch pipelines. The main pipeline is responsible for the trunk delivery of lubricating oil, while the branch pipelines branch off from the main pipeline to supply oil to various processing equipment or lubrication points.

[0047] The fluid mass sensor is installed at the inlet of the main pipeline or upstream of the branch pipeline junction. It uses a multi-parameter integrated sensor to synchronously monitor the flow rate, temperature, and pressure of the lubricating oil in the main pipeline, such as a Coriolis mass flow meter. The fluid mass sensor sends the main pipeline flow rate, temperature, and pressure signals to the controller in real time to obtain the total flow rate Q1 of the lubricating oil in the main pipeline and the temperature and pressure data, which serve as the basis for the flow distribution and status judgment of the lubricating oil in each branch pipeline.

[0048] The proportional solenoid valve is installed at the inlet of each branch pipeline. It can linearly adjust the valve core opening according to the analog signal (such as 4-20mA or 0-10V) output by the controller, thereby achieving precise control of the branch flow. To achieve closed-loop control, the proportional solenoid valve in this embodiment has a built-in valve core displacement sensor. By detecting the real-time position of the valve core iron core, the mechanical displacement is converted into an electrical signal and fed back to the controller. It can automatically compensate for valve core positioning deviation caused by hydraulic jamming, oil contamination or parts wear. The controller dynamically adjusts the output signal by comparing the set value and the feedback value, eliminating steady-state error and ensuring that the control command is executed accurately, thereby accurately controlling the flow of the branch.

[0049] In addition, the controller obtains the precise actual opening degree of the proportional solenoid valve through the valve core displacement sensor, and combines the temperature and pressure parameters obtained from the main flow mass sensor to obtain the theoretical flow rate Q2 flowing through the branch according to the valve's flow characteristic curve. The theoretical flow rate Q2 can be calculated by Hagen-Poiseuille's law.

[0050]

[0051] Among them: Cv is the flow coefficient, which is related to the valve opening and fluid characteristics; A is the effective cross-sectional area of the valve port, which is determined by the solenoid valve opening; ΔP is the pressure difference, the upstream pressure is obtained through the fluid sensor, and the downstream pressure is approximately the fuel tank pressure (atmospheric pressure); ρ is the lubricating oil density, which is related to the temperature.

[0052] The electric energy metering chip can adopt ADE7752A for industrial control and generator monitoring;

[0053] The lubricating oil flows through the branch pipeline, driving the micro hydraulic power generation turbine to rotate and generate electricity. The electric energy metering chip monitors its power generation power in real time and sends the data to the controller. The controller obtains the flow value Q3 through real-time power conversion according to the real-time power measured by the electric energy metering chip. This value represents how much oil actually flows through and drives the micro hydraulic power generation turbine. The conversion relationship between the power and the flow value Q3 can be obtained through measurement calibration or calculated through the power conversion relationship. For example: based on the fact that the lubricating oil usually has a high viscosity, the actual flow value Q3 can be calculated through the Hagen-Poiseuille equation combined with the power generation formula. The viscosity μ can be obtained by referring to the temperature-viscosity table of the lubricating oil according to the temperature data of the fluid sensor.

[0054] The controller compares the flow values Q2 and Q3. For example:

[0055] Normal state: |Q3 - Q2| ≤ ε (ε is the set error threshold), that is, the theoretical flow is approximately equal to the power generation conversion flow, indicating that the branch pipeline is unobstructed;

[0056] Alarm state: Q2 is much smaller than Q3 (such as Q2 < Q3 × 50%), and the actual lubricating oil flowing through is much less than expected;

[0057] When the alarm state is diagnosed, the controller sends the blockage alarm information and flow data of this branch to the upper monitoring system through the communication interface for maintenance personnel to handle in time.

[0058] Furthermore, the power management module includes a micro generator, a rectifier circuit, a voltage stabilizing circuit and an energy storage element, which are used to convert the current output by the micro hydraulic power generation turbine into stable working direct current and store it.

[0059] Specifically, the micro generator selects a micro permanent magnet synchronous generator with a low starting flow rate, such as an axial flux turbine generator, which is adapted to the lubricating oil viscosity (ISO VG 32 - 68), and the rated power ≥ 5W, meeting the power supply requirements of the fluid sensor and the proportional solenoid valve;

[0060] The rectifier circuit adopts a full-bridge rectifier such as the MB6S surface mount bridge rectifier to convert the three-phase alternating current output by the micro generator into pulsating direct current;

[0061] The voltage regulator circuit uses a Buck step-down chip (such as TPS54260), with an input range of 5-36V, and outputs a stable current and voltage to power the proportional solenoid valve, fluid mass sensor and controller.

[0062] The energy storage components use supercapacitors and lithium batteries. The supercapacitors are 16V / 5F supercapacitor banks such as the Maxwell HC series, which can handle instantaneous loads such as the peak current of solenoid valve opening and closing. The lithium batteries can be selected as 3.7V / 18650 lithium batteries with TP4056 charging management to maintain power supply to the sensors when the turbine stops.

[0063] The micro hydraulic turbine drives a micro generator as the primary power source, with energy storage components serving as auxiliary power. When the turbine output power exceeds the load demand, the excess energy is charged to the supercapacitor. When the turbine power is insufficient, the supercapacitor discharges first, with the lithium battery serving as a backup. Automatic power switching is achieved through a switching circuit.

[0064] Furthermore, the proportional solenoid valve includes a valve core displacement sensor for feedback of the actual displacement of the valve core.

[0065] Specifically, the valve core displacement sensor uses a linear Hall sensor such as the Allegro A1324. The Hall sensor outputs a displacement signal by detecting the change in the magnetic field of the magnet built into the valve core. The analog signal output by the sensor is read by the controller, converted into digital and then compared with the target opening value. The controller adjusts the output PWM duty cycle according to the comparison result to drive the solenoid valve coil, dynamically adjusting the opening to the target position, forming a closed-loop control.

[0066] Furthermore, the micro hydraulic generator turbine is an axial flow turbine, which has low-pressure start-up characteristics.

[0067] Specifically, lubricating oil has high viscosity and high flow resistance, and traditional turbines may have difficulty starting under low pressure. The micro hydraulic generator turbine uses a low-speed, large-blade-area axial flow turbine to reduce the starting torque requirement. It can still rotate efficiently and generate electricity when the initial system pressure is low. It is suitable for working conditions with high viscosity and poor fluidity of lubricating oil. When the lubricating oil flows through, the turbine rotates, driving the internal micro generator to generate electricity, ensuring that the power generation function takes effect immediately.

[0068] Furthermore, the fluid mass sensor is a model capable of simultaneously monitoring flow rate, temperature, and pressure.

[0069] Specifically, this embodiment uses a multi-parameter integrated sensor such as a Coriolis mass flow meter, replacing multiple independent sensors with a single sensor, saving installation space and wiring costs, simplifying the system structure, and reducing compatibility issues among multiple devices. The fluid mass sensor collects the total flow rate Q1 of the main pipeline lubricating oil and temperature and pressure data in real time, which serves as the basis for the distribution of lubricating oil flow in each branch pipeline; and provides the temperature and pressure data basis for obtaining the flow rate Q2 and flow rate Q3.

[0070] Furthermore, the controller integrates a communication module for sending the flow data, congestion status, and alarm information of each branch to the upper-level monitoring system.

[0071] Specifically, to meet the environmental requirements of lubricant transportation, the controller integrates a communication module, which supports the Modbus RTU / TCP standard protocol for interface with the upper-level system to ensure compatibility; it supports 4G / 5G or MQTT protocol to push data to the cloud, enabling mobile alarms and data monitoring; the data upload cycle can be set to an adjustable 5-60 seconds via a programmable timer, and an event triggering mechanism (such as alarm signals for excessive flow or equipment failure) is configured to upload structured data including branch ID, real-time flow, and status flag bits.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this 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 described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A lubricating oil processing and delivery system, comprising a main pipeline, branch pipelines, an energy metering chip, a controller, and a power management module, characterized in that: A fluid quality sensor is installed on the main pipeline to monitor the lubricating oil flowing through it. The branch pipeline branches off from the main pipeline and is equipped with a proportional solenoid valve and a miniature hydraulic generator turbine. The proportional solenoid valve is used to adjust its opening degree according to the control signal. The miniature hydraulic generator turbine is installed inside the branch pipeline and is used to rotate and generate electricity when lubricating oil flows through it. The controller is connected to the fluid mass sensor, the proportional solenoid valve, and the micro hydraulic generator turbine, respectively, and is used to receive signals from the fluid mass sensor and control the opening degree of the solenoid valve. The power metering chip is connected between the controller and the micro hydraulic power generation turbine to monitor the power generation of the micro hydraulic power generation turbine. The power management module is connected to the micro hydraulic generator turbine and an external power source, and is used to switch the power supply path and adjust the output voltage.

2. The lubricating oil processing and conveying system according to claim 1, characterized in that: The power management module includes a micro generator, a rectifier circuit, a voltage regulator circuit, and an energy storage element, which is used to convert the current output by the micro hydraulic generator turbine into stable working DC power and store it.

3. The lubricating oil processing and conveying system according to claim 1, characterized in that: The proportional solenoid valve includes a valve core displacement sensor for feedback of the actual displacement of the valve core.

4. The lubricating oil processing and conveying system according to claim 1, characterized in that: The micro hydraulic generator turbine is a low-speed, large-blade mixed-flow turbine with low-pressure start-up characteristics.

5. A lubricating oil processing and conveying system according to claim 1, characterized in that: The fluid mass sensor is a model that can simultaneously monitor flow rate, temperature, and pressure.

6. The lubricating oil processing and conveying system according to claim 1, characterized in that: The controller integrates a communication module, which is used to send the flow data, congestion status and alarm information of each branch to the upper-level monitoring system.

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