Oil flushing control system

Abstract

The invention provides an oil flushing control system which comprises a main control unit, a display operation unit and an oil temperature detection unit used for detecting the temperature of oil in a pipeline of oil flushing equipment. The flow detection unit is used for detecting the flow of oil in the pipeline; the pressure detection unit is used for detecting the pressure of oil in the pipeline; the liquid level detection unit is used for detecting the liquid level of oil in an oil tank of the oil flushing equipment; the filtering detection unit is used for detecting the blocking degree of a filter of the oil flushing equipment; the oil temperature control unit is connected with a heater in the oil tank so as to control heating of the heater; the oil pump control unit is connected with an oil pump of the oil flushing equipment so as to control the flow speed of the oil pump; and the filtering alarm unit is used for prompting that the filter is blocked. The automatic operation of the oil flushing equipment is controlled, and the oil flushing efficiency and stability are improved through automatic control.

Description

Technical Field

[0001] This invention relates to the field of oil flushing equipment technology, and more specifically, to an oil flushing control system. Background Technology

[0002] In traditional industrial equipment and pipeline maintenance, oil flushing processes often rely on manual operation and simple control equipment. This is not only inefficient but also sometimes fails to ensure that the oil cleanliness meets the equipment's requirements. Furthermore, traditional methods are often wasteful in terms of energy utilization because parameters such as pump operating speed and flushing temperature cannot be precisely adjusted according to actual needs. Therefore, there is an urgent need for an energy-efficient and high-performance oil flushing method. Summary of the Invention

[0003] In view of the above problems, the purpose of this invention is to provide an oil flushing control system for controlling the automatic operation of oil flushing equipment, thereby improving the efficiency and stability of oil flushing through automated control.

[0004] This invention provides an oil flushing control system for controlling the operation of oil flushing equipment, comprising:

[0005] An oil temperature detection unit is used to detect the temperature of the oil in the pipeline of the oil flushing equipment;

[0006] A flow detection unit is used to detect the flow rate of the oil in the pipeline;

[0007] A pressure detection unit is used to detect the pressure of the oil in the pipeline;

[0008] A liquid level detection unit is used to detect the liquid level of the oil in the oil tank of the oil flushing equipment;

[0009] A filter detection unit is used to detect the degree of clogging of the filter in the oil flushing device;

[0010] An oil temperature control unit is connected to the heater in the oil tank to control the heating of the heater;

[0011] An oil pump control unit is connected to the oil pump of the oil flushing equipment to control the flow rate of the oil pump;

[0012] A filter alarm unit is used to indicate that the filter is clogged;

[0013] The main control unit is used to receive real-time data from the oil temperature detection unit, the flow detection unit, and the pressure detection unit to control the oil temperature control unit and the oil pump control unit; to receive real-time data from the liquid level detection unit to control the opening and closing of the oil supply valve on the oil tank; and to receive real-time data from the filter detection unit to control the filter alarm unit to issue a prompt.

[0014] The display operation unit, connected to the main control unit, is used to display real-time data from the oil temperature detection unit, the flow detection unit, the liquid level detection unit, the pressure detection unit, and the filter detection unit, as well as to control the oil temperature control unit, the oil pump control unit, and the oil supply valve.

[0015] One optional solution is that the main control unit includes a PLC, and the display operation unit includes a touch screen.

[0016] One optional embodiment is that the oil temperature detection unit includes an oil tank temperature transmitter installed in the oil tank and a return oil temperature transmitter installed on the return oil pipeline of the oil flushing equipment, both of which are connected to the PLC; the oil temperature control unit includes a three-phase thyristor voltage regulator, which is connected to the heater and the PLC respectively.

[0017] One optional solution is that the flow detection unit includes an inlet flow meter installed on the inlet pipeline of the oil flushing equipment and a return flow meter installed on the return pipeline of the oil flushing equipment, both of which are connected to the PLC; the oil pump control unit includes a three-phase frequency converter, which is connected to the oil pump and the PLC respectively.

[0018] One optional solution is that the pressure detection unit includes a pressure transmitter installed at the oil outlet of the oil pump, the pressure transmitter being connected to the PLC; and a pressure relief valve connected to the PLC is installed on the pipeline.

[0019] One optional solution is that the liquid level detection unit includes a liquid level transmitter installed in the oil tank, and both the liquid level transmitter and the oil supply valve are connected to the PLC.

[0020] One optional embodiment is that the filter detection unit includes a differential pressure transmitter connected to both the inlet and outlet of the filter, and the differential pressure transmitter is connected to the PLC; the filter alarm unit includes an audible and visual alarm connected to the PLC.

[0021] One optional solution is that the PLC is also wirelessly connected to a PC or smartphone, and displays real-time data of the oil temperature detection unit, the flow detection unit, the liquid level detection unit, the pressure detection unit, and the filter detection unit through the PC or smartphone, and controls the oil temperature control unit, the oil pump control unit, and the oil supply valve.

[0022] One possible solution is that the PLC is connected to a three-phase power supply via a circuit breaker.

[0023] One optional solution is to provide control keys for the oil temperature control unit, the oil pump control unit, the oil supply valve, and the oil pump operating time on the touch screen.

[0024] As described above, the oil flushing control system provided by this invention includes detection units such as an oil temperature detection unit, a liquid level detection unit, a flow rate detection unit, a pressure detection unit, and a filter detection unit to detect various parameters during the oil flushing process and feed them back to the main control unit. The main control unit then controls the oil pump, heater, and other actuators to operate under expected conditions, ensuring the stable and safe operation of the entire oil flushing equipment and achieving good flushing results. This invention improves the automation level of the oil flushing process, ensures optimal flushing effects, enhances oil cleanliness, and reduces energy consumption.

[0025] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below and particularly pointed out in the claims. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to include all such aspects and their equivalents. Attached Figure Description

[0026] Other objects and results of the invention will become more apparent and readily understood by referring to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of the electrical connections of the oil flushing control system according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the layout of the oil flushing control system according to an embodiment of the present invention;

[0029] Among them, 1-oil temperature detection unit, 11-oil tank temperature transmitter, 12-return oil temperature transmitter;

[0030] 2-Flow detection unit, 21-Inlet oil flow meter, 22-Return oil flow meter;

[0031] 3-Pressure detection unit, 31-Pressure transmitter, 32-Pressure relief valve;

[0032] 4-Level detection unit, 41-Level transmitter;

[0033] 5-Filter detection unit, 51-Differential pressure transmitter, 52-Filter;

[0034] 6-Oil temperature control unit; 61-Three-phase thyristor voltage regulator; 62-Heater; 63-Oil tank;

[0035] 7-Oil pump control unit, 71-Three-phase frequency converter, 72-Oil pump;

[0036] 8-Filter alarm unit; 81-Audible and visual alarm;

[0037] 9-Main control unit, 91-PLC, 92-Circuit breaker, 93-Three-phase power supply connection;

[0038] 10 - Display operation unit; 101 - Touch screen; 102 - PC or smartphone;

[0039] a-Inlet valve, b-Equipment to be flushed, c-Oil supply valve;

[0040] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0041] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0042] This invention can be modified and has various embodiments, with specific embodiments illustrated in the accompanying drawings. However, this invention is not limited to this particular implementation and all modifications, equivalents, and substitutions falling within the spirit and technical scope of this invention are to be understood as included.

[0043] Ordinal terms such as "first," "second," etc., may be used to describe various constituent elements, but the constituent elements are not limited to these terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the claims of this invention, a second constituent element may be named a first constituent element, and similarly, a first constituent element may be named a second constituent element. Terms and / or include combinations of multiple associated items or one of multiple associated items.

[0044] It should be understood that when referring to a constituent element being "connected" or "in contact" with other constituent elements, this includes not only cases where it is directly connected or in contact with other constituent elements, but also cases where other constituent elements exist between them. Conversely, when referring to a constituent element being "directly connected" or "directly in contact" with other constituent elements, it should be understood that no other constituent elements exist between them.

[0045] In the description of the embodiments, when it is stated that a certain component is formed "on or under" other components, "on or under" includes both two components that are in direct contact with each other and at least one other component that is configured to be formed between the two components. Furthermore, when expressed as "on or under", based on a certain component, it refers not only to the upper direction but may also include the lower direction.

[0046] The terminology used in this application is for illustrative purposes only and is not intended to limit the invention. Unless the context clearly specifies otherwise, singular expressions include plural expressions. In this application, it should be understood that terms such as "comprising" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification, and do not preclude the presence or additional possibilities of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0047] Unless otherwise defined, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Terms as defined in commonly used dictionaries should be interpreted in a meaning consistent with their meaning in the context of the relevant art, and should not be construed as having an ideal or overly formal meaning unless explicitly defined in this application.

[0048] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0049] like Figure 1 and Figure 2 As shown, the oil flushing control system proposed in this embodiment can be used for the automatic control of oil flushing equipment in industrial equipment and pipelines, and can also be used for the control of other liquid flushing equipment.

[0050] Oil flushing equipment generally includes an oil tank 63, an oil inlet pipe connected between the oil tank 63 and the equipment b to be flushed or a pipeline, an oil pump 72 connected to the oil inlet pipe, the oil pump 72 inputs oil into the equipment b to be flushed, a return oil pipe is set at the outlet of the equipment b to be flushed, a filter 52 is connected to the return oil pipe, the filter 52 filters the return oil and sends it back to the oil tank 63, and a heater 62 set in the oil tank 63 can heat the oil for cleaning the equipment.

[0051] This oil flushing control system includes a main control unit 9, various detection units, component control units, and a display and operation unit 10. The main control unit 9 is the core control unit of this oil flushing control system. It receives data from various detection units, performs logical operations, and then controls the component control units to automate the operation of the main components of the entire flushing equipment. The display and operation unit 10 is used to view the detection data received by the main control unit 9 from various detection units, as well as to allow manual input of parameter values ​​for each component. The main control unit 9 receives manual commands and controls the component control units to achieve manual observation and operation.

[0052] Various detection units are used to detect various data of the oil in the entire circuit of the oil flushing equipment. These units may include oil temperature detection unit 1, liquid level detection unit 4, flow rate detection unit 2, pressure detection unit 3, and filter detection unit 5, all of which are electrically connected to the main control unit 9. The component control units include oil temperature control unit 6 and oil pump control unit 7, both of which are electrically connected to the main control unit 9. The display operation unit 10 is electrically connected to the main control unit 9.

[0053] Oil temperature detection unit 1 is used to detect the temperature of the oil in the pipeline of the oil flushing equipment. Oil temperature is an important indicator of the oil used for flushing. Maintaining the oil temperature within a suitable range prevents both excessively low temperatures that reduce flushing effectiveness and excessively high temperatures that cause oil deterioration. Oil temperature detection unit 1 monitors the oil temperature in the oil circuit of the oil flushing equipment in real time, converts the temperature value into an electrical signal, and inputs it to the main control unit 9. Through logical operations, the main control unit 9 controls the operation of the oil temperature control unit 6. The oil temperature control unit 6 is connected to the heater 62 in the oil tank 63 to control whether the heater 62 is heating, thus achieving timely control of the oil temperature.

[0054] The data collected by the oil temperature detection unit 1 is displayed on the display operation unit 10 through the main control unit 9, allowing real-time observation of the oil temperature value. Personnel can control the operation of the oil temperature control unit 6 by operating the display operation unit 10, thereby achieving manual control of the heater 62.

[0055] Flow detection unit 2 is used to detect the flow rate of oil in the pipeline of the oil flushing equipment. The flow rate must be controlled within a suitable range to effectively flush away contaminants from the equipment. Flow detection unit 2 monitors the oil flow rate in the pipeline in real time, converts the flow rate value into an electrical signal, and inputs it to the main control unit 9. Through logical operations, the main control unit 9 controls the operation of the oil pump control unit 7. The oil pump control unit 7 is connected to the oil pump 72 to control the flow rate of the oil pump 72, achieving timely control of the oil flow rate.

[0056] The data collected by the flow detection unit 2 is displayed on the display operation unit 10 through the main control unit 9, allowing real-time observation of the oil flow rate. Personnel can control the operation of the oil pump control unit 7 by operating the display operation unit 10, thereby achieving manual control of the oil pump 72.

[0057] Pressure detection unit 3 is used to detect the pressure of the oil in the pipeline of the oil flushing equipment. The pressure should be controlled within a suitable range to maintain the stable and safe operation of the oil flushing equipment. The pressure detection unit 3 monitors the oil pressure in the oil circuit of the oil flushing equipment in real time, converts the pressure value into an electrical signal, and inputs it into the main control unit 9. Through the logic operation of the main control unit 9, the main control unit 9 controls the output pressure of the oil pump 72 through the oil pump control unit, thereby achieving timely control of the oil pressure.

[0058] The data collected by the pressure detection unit 3 is displayed on the display operation unit 10 via the main control unit 9, allowing for real-time observation of the oil pressure value. Personnel can manually control the output pressure of the oil pump 72 by manipulating the display operation unit 10. The main control unit 9 can also be electrically connected to the pressure relief valve 32 on the pipeline. Based on the signal input from the pressure detection unit 3, the main control unit 9 controls the pressure relief valve 32 to operate. If the oil pressure value exceeds the maximum limit, the main control unit 9 controls the pressure relief valve 32 to open and release pressure.

[0059] The level detection unit 4 is used to detect the oil level in the oil tank 63 of the oil flushing equipment. The oil level in the tank 63 must not be too low; otherwise, the flushing operation cannot be maintained, and the oil pump 72 will run dry and be damaged. The level detection unit 4 monitors the oil level in the tank 63 in real time, converts the level value into an electrical signal, and inputs it to the main control unit 9. Through logical operations, the main control unit 9 controls the opening and closing of the oil supply valve c. The oil supply valve c is installed on the oil tank 63 and connected to the oil supply pipe, and is electrically connected to the main control unit 9. When the level detected by the level detection unit 4 is lower than the set low value, the main control unit 9 controls the oil supply valve c to open, allowing oil to enter the oil tank 63. When the level detected by the level detection unit 4 is higher than the set high value, the main control unit 9 controls the oil supply valve c to close, achieving timely replenishment and cessation of oil supply.

[0060] The data collected by the liquid level detection unit 4 is displayed on the display operation unit 10 through the main control unit 9, allowing real-time observation of the liquid level value. Personnel can control the operation of the oil supply valve c by operating the display operation unit 10, thereby achieving manual control of the replenishment of oil.

[0061] The filter detection unit 5 is used to detect the degree of clogging of the filter 52 in the oil flushing equipment. The filter 52 is generally installed on the return oil line near the return port of the oil tank 63 to filter impurities in the oil after flushing, ensuring the cleanliness of the oil. The filter detection unit 5 monitors the degree of clogging of the filter 52 in real time, converts the detected value into an electrical signal, and inputs it to the main control unit 9. Through logical operations, the main control unit 9 controls the operation of the filter alarm unit 8. If the degree of clogging exceeds a preset value, the filter alarm unit 8 issues a warning signal to prompt personnel to clean or replace the filter 52 in a timely manner.

[0062] The data collected by the filter detection unit 5 is displayed on the display operation unit 10 through the main control unit 9, allowing real-time observation of the degree of blockage and prompt handling by personnel.

[0063] This embodiment can not only automatically control and adjust the oil flushing process throughout the entire process, but also allow for remote manual control of the oil flushing process, making it convenient, flexible, and safe to use.

[0064] In one specific embodiment of the present invention, the main control unit 9 includes a PLC (Programmable Logic Controller) 91. The PLC 91 employs a programmable memory to store programs internally, execute user-oriented instructions such as logical operations, sequential control, timing, counting, and arithmetic operations, and control various types of machinery or production processes through digital or analog input / output. The display operation unit 10 may include a touch screen 101. The interface of the touch screen 101 can clearly display the real-time data of each detection unit and facilitate operation.

[0065] In one specific embodiment of the present invention, the oil temperature detection unit 1 may include an oil tank temperature transmitter 11 disposed in the oil tank 63 and a return oil temperature transmitter 12 disposed on the return oil pipeline. Both the oil tank temperature transmitter 11 and the return oil temperature transmitter 12 are connected to the PLC 91. The oil temperature control unit 6 may include a three-phase thyristor voltage regulator 61, which is connected to the PLC 91 and the heater 62 respectively.

[0066] The oil tank temperature transmitter 11 monitors the oil temperature in the oil tank 63 in real time, while the return oil temperature transmitter 12 monitors the temperature of the oil flowing out of the equipment being flushed (b) in real time. It also monitors the oil temperature before and after use, enabling comprehensive and accurate real-time monitoring of the oil temperature during the flushing process. The data is transmitted to the PLC 91 in real time. The PLC 91 performs logic calculations to precisely control the three-phase thyristor voltage regulator 61, thereby controlling the operation of the heater 62 and maintaining a constant oil temperature. The control core of the three-phase thyristor voltage regulator 61 uses a 16-bit microprocessor and SMT soldering technology. It has advantages such as small size, high efficiency, and long lifespan. In automatic control systems, it can be used as a high-power drive device, enabling the control of high-power equipment with low-power controls.

[0067] During the heating process, PLC91 continuously receives feedback from the oil tank temperature transmitter 11 and the return oil temperature transmitter 12. If the oil temperature reaches the preset value, PLC91 will maintain the current power of heater 62. If the oil temperature detected by the oil tank temperature transmitter 11 and / or the return oil temperature transmitter 12 deviates from the preset value, PLC91 immediately calculates the required power adjustment of heater 62 and precisely adjusts the power of heater 62 through the three-phase thyristor voltage regulator 61 to quickly restore it to the target temperature range. During the flushing process, the oil temperature in the oil tank and the oil temperature in the return oil pipeline should be basically the same and within the preset range.

[0068] Before the oil pump 72 is started, the oil temperature in the oil tank 63 can be detected by the oil tank temperature transmitter 11. If the oil temperature in the oil tank 63 reaches the preset value, the PLC 91 sends a start command to the oil pump control unit. The oil pump control unit starts the oil pump 72 according to the frequency set by the PLC 91. This process ensures that the oil pump 72 starts smoothly and effectively. After the oil pump 72 is started, the oil tank temperature transmitter 11 and the return oil temperature transmitter 12 detect it at the same time.

[0069] Personnel can also view the temperatures detected by the oil tank temperature transmitter 11 and the return oil temperature transmitter 12 at any time through the touch screen 101 to understand the oil temperature situation. They can also input the desired oil temperature on the touch screen 101 so that the PLC 91 can control the three-phase thyristor voltage regulator 61 to adjust the heater 62, thereby realizing manual control of the oil temperature at any time.

[0070] In one specific embodiment of the present invention, the flow detection unit 2 includes an inlet flow meter 21 installed on the inlet pipeline of the oil flushing equipment and a return flow meter 22 installed on the return pipeline of the oil flushing equipment. Both the inlet flow meter 21 and the return flow meter 22 are connected to the PLC 91. The oil pump control unit 7 includes a three-phase frequency converter 71 connected to the oil pump 72, and the three-phase frequency converter 71 is connected to the PLC 91.

[0071] The inlet flow meter 21 monitors the oil flow rate in the inlet pipeline between the oil tank 63 and the equipment being flushed (b) in real time. The return flow meter 22 monitors the oil flow rate in the return pipeline between the equipment being flushed (b) and the return end of the oil tank 63 in real time, and also monitors the oil flow rate before and after use. This allows for comprehensive and accurate monitoring of the real-time oil flow rate during the flushing process, and the data is transmitted to the PLC 91 in real time. The PLC 91 performs logic operations to precisely control the three-phase frequency converter 71 to control the operation of the oil pump 72 and maintain a constant flow rate. The three-phase frequency converter 71 is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's operating power supply.

[0072] If the flow rate detected by the inlet flow meter 21 and / or the return flow meter 22 deviates from the preset value, the PLC 91 immediately calculates and issues a command. Through the adjustment of the frequency converter, the oil pump 72 operates to achieve continuous oil circulation flushing. During the flushing process, the flow rates in the inlet and return oil lines should be basically consistent and within the preset range.

[0073] Personnel can also view the flow rate detected by the inlet flow meter 21 and the return flow meter 22 at any time through the touch screen 101 to understand the flow rate situation. They can also input the desired flow rate on the touch screen 101 so that the PLC 91 controls the three-phase frequency converter 71 to adjust the oil pump 72 so that the flow rate reaches the appropriate range, thus realizing manual control of the flow rate.

[0074] Both the inlet flow meter 21 and the return flow meter 22 can be ultrasonic strap-on flow meters, which are easy to install and maintain.

[0075] In a specific embodiment of the present invention, the pressure detection unit 3 includes a pressure transmitter 31 disposed at the oil outlet of the oil pump 72. The pressure transmitter 31 is connected to the PLC 91. A branch pipe is connected between the oil pump 72 and the flushed equipment b on the oil inlet pipe. The branch pipe is connected to the oil return port of the oil tank. A pressure relief valve 32 is disposed at the end of the oil inlet pipe near the branch pipe. The pressure relief valve 32 is connected to the PLC 91.

[0076] The pressure transmitter 31 detects the oil pressure in the oil inlet pipeline in real time and transmits the data to the PLC91 in real time. The PLC91 performs logic calculations to accurately control the output pressure of the oil pump 72, keeping the pressure within a reasonable range. It can also control the action of the pressure relief valve 32.

[0077] If the oil pressure detected by pressure transmitter 31 deviates from the preset value, PLC 91 immediately calculates and issues a command to adjust oil pump 72 through the oil pump control unit to achieve oil pressure regulation and quickly restore it to the target oil pressure range. If the oil pressure detected by pressure transmitter 31 deviates from the maximum oil pressure limit, PLC 91 immediately calculates and issues a command to control pressure relief valve 32 to open and release pressure, allowing some oil to flow back to the oil tank through the branch pipe to avoid danger.

[0078] Personnel can also view the oil pressure detected by the pressure transmitter 31 at any time through the touch screen 101 to understand the oil pressure status. They can also input the desired oil pressure on the touch screen 101 so that the PLC 91 can control and adjust the oil pump 72 to make the oil pressure reach a suitable range.

[0079] In one specific embodiment of the present invention, the liquid level detection unit 4 includes a liquid level transmitter 41 disposed in the oil tank 63, and the liquid level transmitter 41 and the oil supply valve c are both connected to the PLC 91.

[0080] The level transmitter 41 detects the level of the oil tank 63 in real time and transmits the data to the PLC 91 in real time. The PLC 91 performs logic calculations and precisely controls the opening and closing of the oil supply valve c to complete the oil inlet operation and keep the oil level within a reasonable range.

[0081] If the oil level detected by the level transmitter 41 is lower than the minimum preset value, the PLC 91 immediately calculates and issues a command to open the oil supply valve c, allowing oil to enter the oil tank 63. If the oil level detected by the level transmitter 41 is higher than the maximum preset value, the oil supply valve c is closed.

[0082] Personnel can also view the oil level detected by the level transmitter 41 at any time through the touch screen 101 to understand the oil level situation. They can also click the oil supply button on the touch screen 101 to make the PLC 91 control the oil supply valve c to open and close, so as to replenish and stop the oil supply at any time.

[0083] In one specific embodiment of the present invention, the filter detection unit 5 includes a differential pressure transmitter 51 connected to both the inlet and outlet of the filter 52, the differential pressure transmitter 51 being connected to a PLC 91, and the filter alarm unit 8 includes an audible and visual alarm 81 connected to the PLC 91.

[0084] The two connection terminals of the differential pressure transmitter 51 are respectively connected to the oil lines at both ends of the filter 52 to measure the pressure difference at both ends of the filter 52 in order to measure the filtration effect of the filter 52. Under normal circumstances, the pressure difference is very small, but when the filter 52 is blocked, the pressure difference will increase.

[0085] Differential pressure transmitter 51 detects the filtration effect and clogging degree of filter 52 in real time and transmits the data to PLC 91 in real time. After logic operation, PLC 91 controls the audible and visual alarm 81 to issue a prompt to remind personnel that the filtration effect of filter 52 has decreased.

[0086] If the differential pressure detected by the differential pressure transmitter 51 deviates from the preset value, the PLC 91 immediately calculates and issues a command, and the audible and visual alarm 81 emits sound and light to facilitate timely cleaning of the filter 52.

[0087] Personnel can also view the differential pressure detected by the differential pressure transmitter 51 at any time through the touch screen 101, understand the status of the filter 52, and clean the filter 52 at any time.

[0088] In one specific embodiment of the present invention, PLC 91 can also be wirelessly connected to a PC or smartphone 102, displaying real-time data from the oil temperature detection unit 1, flow detection unit 2, liquid level detection unit 4, pressure detection unit 3, and filter detection unit 5, and controlling the operation of the oil temperature control unit 6, oil pump control unit 7, oil supply valve c, and pressure relief valve 32. The display interface of the PC or smartphone is the same as that of the touch screen 101, facilitating remote viewing and control by personnel anytime and anywhere.

[0089] In one specific embodiment of the present invention, PLC 91 is connected to a three-phase power supply 93 via a circuit breaker 92. The circuit breaker 92 is the main switch for the entire oil flushing control system, and the three-phase power supply 93 supplies power to the entire oil flushing control system.

[0090] In one specific embodiment of the present invention, the touch screen 101 is provided with control keys for the oil temperature control unit 6, control keys for the oil pump control unit 7, an on / off switch for the oil supply valve c, and control keys for the working time of the oil pump 72.

[0091] The control keys of the oil temperature control unit 6 can be used to input the required oil temperature value. The PLC 91 controls the operation of the oil temperature control unit 6 according to the input oil temperature value. The control keys of the oil pump control unit 7 can include oil pressure key and flow key. The oil pressure key can be used to input the required oil pressure value, and the flow key can be used to input the required flow value. The PLC 91 controls the operation of the oil pump control unit 7 according to the input flow value and oil pressure value. The on / off key of the oil supply valve c can control the opening and closing of the oil supply valve c. The working time control key of the oil pump 72 can be used to input the working time of the oil pump 72. The PLC 91 controls the working time of the oil pump 72.

[0092] The touch display 101 can be a 7-inch LCD touchscreen.

[0093] An inlet valve a can also be installed on the pipeline at the outlet of oil tank 63. Inlet valve a serves as the main valve of the entire oil flushing equipment and can cut off the connection between oil tank 63 and oil pump 72. Inlet valve a can also be connected to PLC 91. An on / off switch for inlet valve a can be set on the display and operation unit 10 to control the opening and closing of inlet valve a.

[0094] Work process:

[0095] After the oil flushing control system is powered on, the PLC91 starts a self-test program to check the connection status of the connected components, ensuring that all detection units and control units are correctly connected and can communicate normally. The touch screen 101 displays the initial status of each detection unit and component, and the oil flushing control system begins operation. If any values ​​detected by the detection units are abnormal during the flushing process, the oil flushing control system automatically adjusts the corresponding control unit or component. After the oil flushing control system finishes operating, the operator can access the system's data records through the touch screen 101 interface or a PC remote interface. The system provides an intuitive data query function, allowing users to search by date, time, or specific event. Users can view detailed data reports, which not only show the parameter change trends during the flushing process but also include records of any abnormal events and details of the system's response.

[0096] The operator can also input key parameters such as oil temperature, oil pressure, flow rate and flushing time on the parameter configuration interface on the touch screen 101. After receiving the parameters set by the operator, the PLC91 first checks the rationality of the parameters to confirm that all input parameters are within a safe and effective range. These values ​​are used as monitoring standards during operation. The PLC91 controls the operation of this oil flushing control system according to the input values.

[0097] The oil flushing control system according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art will understand that various modifications can be made to the oil flushing control system proposed in the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. An oil flushing control system for controlling the operation of oil flushing equipment, characterized in that, include: An oil temperature detection unit is used to detect the temperature of the oil in the pipeline of the oil flushing equipment; A flow detection unit is used to detect the flow rate of the oil in the pipeline; A pressure detection unit is used to detect the pressure of the oil in the pipeline; A liquid level detection unit is used to detect the liquid level of the oil in the oil tank of the oil flushing equipment; A filter detection unit is used to detect the degree of clogging of the filter in the oil flushing device; An oil temperature control unit is connected to the heater in the oil tank to control the heating of the heater; An oil pump control unit is connected to the oil pump of the oil flushing equipment to control the flow rate of the oil pump; A filter alarm unit is used to indicate that the filter is clogged; The main control unit is used to receive real-time data from the oil temperature detection unit, the flow detection unit, and the pressure detection unit to control the oil temperature control unit and the oil pump control unit; to receive real-time data from the liquid level detection unit to control the opening and closing of the oil supply valve on the oil tank; and to receive real-time data from the filter detection unit to control the filter alarm unit to issue a prompt. The display operation unit, connected to the main control unit, is used to display real-time data from the oil temperature detection unit, the flow detection unit, the liquid level detection unit, the pressure detection unit, and the filter detection unit, as well as to control the oil temperature control unit, the oil pump control unit, and the oil supply valve.

2. The oil flushing control system as described in claim 1, characterized in that, The main control unit includes a PLC, and the display operation unit includes a touch screen.

3. The oil flushing control system as described in claim 2, characterized in that, The oil temperature detection unit includes an oil tank temperature transmitter installed in the oil tank and a return oil temperature transmitter installed on the return oil pipeline of the oil flushing equipment. Both the oil tank temperature transmitter and the return oil temperature transmitter are connected to the PLC. The oil temperature control unit includes a three-phase thyristor voltage regulator, which is connected to the heater and the PLC respectively.

4. The oil flushing control system as described in claim 2, characterized in that, The flow detection unit includes an inlet flow meter installed on the inlet pipeline of the oil flushing equipment and a return flow meter installed on the return pipeline of the oil flushing equipment. Both the inlet flow meter and the return flow meter are connected to the PLC. The oil pump control unit includes a three-phase frequency converter, which is connected to both the oil pump and the PLC.

5. The oil flushing control system as described in claim 2, characterized in that, The pressure detection unit includes a pressure transmitter installed at the oil outlet of the oil pump, which is connected to the PLC; a pressure relief valve connected to the PLC is installed on the pipeline.

6. The oil flushing control system as described in claim 2, characterized in that, The liquid level detection unit includes a liquid level transmitter installed in the oil tank, and both the liquid level transmitter and the oil supply valve are connected to the PLC.

7. The oil flushing control system as described in claim 2, characterized in that, The filter detection unit includes a differential pressure transmitter connected to both the inlet and outlet of the filter, and the differential pressure transmitter is connected to the PLC. The filtering alarm unit includes an audible and visual alarm connected to the PLC.

8. The oil flushing control system as described in claim 2, characterized in that, The PLC is also wirelessly connected to a PC or smartphone, which displays real-time data from the oil temperature detection unit, flow detection unit, liquid level detection unit, pressure detection unit, and filter detection unit, and controls the oil temperature control unit, oil pump control unit, and oil supply valve.

9. The oil flushing control system as described in claim 2, characterized in that, The PLC is connected to a three-phase power supply via a circuit breaker.

10. The oil flushing control system as described in claim 1, characterized in that, The touch screen is equipped with control keys for the oil temperature control unit, control keys for the oil pump control unit, on / off switch for the oil supply valve, and control keys for the operating time of the oil pump.

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