Detection system suitable for high-pressure oil pump of intelligent diesel engine

Abstract

The utility model relates to the technical field of monitoring, in particular to a detection system suitable for a high-pressure oil pump of an intelligent diesel engine, which comprises a multi-dimensional sensor module, a communication module, a main control module, a display module and an alarm module, the communication module transmits operation parameters collected by the multi-dimensional sensor module to the main control module, the display module is electrically connected with the main control module, and when the main control module detects that the operation parameters of the high-pressure oil pump exceed a preset range, the alarm module gives an audible and visual alarm. The safety and the stability of the high-pressure oil pump of the intelligent diesel engine are remarkably improved, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to monitoring technical field, concretely relates to a detection system suitable for intelligent diesel engine high pressure oil pump. BACKGROUND

[0002] Intelligent diesel engine is the core power unit of modern ship power, generator set and heavy equipment, and its operation reliability directly determines energy conversion efficiency and equipment safety. In the extreme cold sea area, high altitude mining area and other extreme working conditions, the diesel engine needs to bear the severe temperature impact of-45 DEG C~180 DEG C and the mechanical load of 20g vibration acceleration, and the high pressure oil pump as the "heart" of the fuel injection system undertakes the key task of pressurizing the fuel to above 35MPa, and its precision directly affects the combustion efficiency and equipment life.

[0003] The current high pressure oil pump system faces the following problems:

[0004] 1) The matching gap between the plunger pairs is only 2-3 microns (μm), and once the wear exceeds 0.5 microns (μm), it will cause fuel leakage, which seriously affects the performance and service life of the system;

[0005] 2) The existing technology cannot effectively detect the fuel and oil leakage inside the high pressure oil pump, which limits the early diagnosis ability of the internal mechanical component wear degree and the sealing part aging condition, and increases the risk of sudden failure;

[0006] 3) The traditional monitoring method often relies on a single or a few sensors, which cannot comprehensively cover the working state of the high pressure oil pump, is easy to ignore the existence of composite faults, and reduces the possibility and accuracy of early warning. INVENTION CONTENTS

[0007] The utility model provides a detection system suitable for intelligent diesel engine high pressure oil pump, significantly improves the safety and stability of intelligent diesel engine high pressure oil pump, and reduces the maintenance cost.

[0008] In order to realize the utility model's purpose, the technical scheme adopted is: a detection system suitable for intelligent diesel engine high pressure oil pump, including multi-dimensional sensor module, communication module, main control module, display module and alarm module, the multi-dimensional sensor module is used for monitoring the running state of high pressure oil pump, the communication module transmits the running parameter collected by the multi-dimensional sensor module to the main control module, the display module is electrically connected with the main control module, when the main control module detects that the running parameter of high pressure oil pump exceeds the preset range, the alarm module carries out audible and light alarm.

[0009] As an optimization scheme of the utility model, the multi-dimensional sensor module includes temperature sensor unit, pressure sensor unit, flow sensor unit, piezoelectric vibration sensor and hall effect displacement sensor, the pressure sensor unit is installed at the oil outlet of high pressure oil pump, is used for real -time monitoring fuel pressure fluctuation, the flow sensor unit is installed on the pipeline between fuel pump and high pressure oil pump, is used for real -time monitoring the flow of fuel, the temperature sensor unit is installed on the shell of high pressure oil pump, is used for monitoring the temperature of high pressure oil pump, the piezoelectric vibration sensor is installed on the oil pump casing, is used for detecting mechanical vibration, and the hall effect displacement sensor is installed near the plunger, is used for calibrating plunger lift.

[0010] As an optimization scheme of the utility model, the main control module includes single-chip microcomputer U1, and the single-chip microcomputer U1 is STM32F103.

[0011] As an optimization scheme of the utility model, the temperature sensor unit includes temperature sensor U2 and resistance R1, the 2nd pin of temperature sensor U2 is connected with the 37th pin of single-chip microcomputer U1 through data line, and resistance R1 is connected between the 2nd pin and the 3rd pin of temperature sensor U2.

[0012] As an optimization scheme of the utility model, the multi-dimensional sensor module further includes viscosimeter unit, the viscosimeter unit is additionally installed on the high pressure oil pump leakage oil pipe, and is used for detecting high pressure oil pump internal fuel and lubricating oil leakage condition.

[0013] As an optimization scheme of the utility model, the communication module includes RS485 level conversion chip U5, capacitor C25, resistance R14, resistance R17 and resistance R20, the 1st pin of RS485 level conversion chip U5 is connected with the 25th pin of single-chip microcomputer U1, the 2nd pin of RS485 level conversion chip U5 is connected with the 13th pin of single-chip microcomputer U1, the 4th pin of RS485 level conversion chip U5 is connected with the 14th pin of single-chip microcomputer U1, capacitor C25 and resistance R14 are connected in series between the 8th pin and the 7th pin of RS485 level conversion chip U5, resistance R17 is connected between the 8th pin and the 6th pin of RS485 level conversion chip U5, and resistance R20 is connected between the 7th pin and the 6th pin of RS485 level conversion chip U5.

[0014] As an optimization scheme of the utility model, the display module includes display screen U6, the 3rd pin of display screen U6 is connected with the 41st pin of single-chip microcomputer U1, the 4th pin of display screen U6 is connected with the 42nd pin of single-chip microcomputer U1, the 5th pin of display screen U6 is connected with the 43rd pin of single-chip microcomputer U1, the 6th pin of display screen U6 is connected with the 26th pin of single-chip microcomputer U1, and the 5th pin of display screen U6 is connected with the 25th pin of single-chip microcomputer U1.

[0015] As an optimization scheme of the utility model, the alarm module includes a buzzer, a resistor R5 and a triode Q1, the base of the triode Q1 is connected with the 2nd pin of the single-chip microcomputer U1 through the resistor R5, the collector of the triode Q1 is connected with one end of the buzzer, and the other end of the buzzer is grounded.

[0016] The utility model has positive effect: 1) the utility model passes through multidimensional sensor module real time monitoring high pressure oil pump's temperature, pressure, flow, mechanical vibration and plunger lift etc. Key operating parameter, can find the potential failure of high pressure oil pump in time, such as fuel leakage, mechanical component wear or sealing piece aging etc. When the main control module detects that operating parameter exceeds the preset range, the alarm module will start audible and visual alarm function immediately, reminds the operator to pay attention and takes corresponding measure. This not only avoids the equipment shutdown or damage caused by the fault, but also ensures the continuous and stable operation of the intelligent diesel engine in the complex sea conditions and the harsh weather environment, thereby improving the safety and stability of the whole machine.

[0017] 2) the utility model realizes the comprehensive monitoring of the running state of the high pressure oil pump by integrating multiple sensors. This allows the operator to timely understand the running state of the equipment and take appropriate maintenance measures before the fault occurs. This preventive maintenance method not only reduces the probability of sudden failure, but also prolongs the service life of the high pressure oil pump, thereby reducing the overall maintenance cost.

[0018] 3) the utility model adopts intuitive display module and clear audible and visual alarm mechanism, so that the operator can quickly obtain important information and respond. This user-friendly interface design simplifies the operation process, enhances user friendliness, and also promotes more efficient management. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0020] Figure 1 is the principle diagram of the utility model;

[0021] Figure 2 is the circuit principle diagram of the main control module of the utility model;

[0022] Figure 3 is the circuit principle diagram of the temperature sensor unit of the utility model;

[0023] Figure 4 is the circuit principle diagram of the communication module of the utility model;

[0024] Figure 5 is the circuit principle diagram of the display module of the utility model;

[0025] Figure 6It is the circuit principle diagram of the alarm module of the utility model;

[0026] Among them: 1, multi-dimensional sensor module, 2, communication module, 3, main control module, 4, display module, 5, alarm module. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the patent embodiment more clear, the technical scheme in the patent embodiment will be clearly and completely described below with the drawings in the patent embodiment.

[0028] The following description of at least one example embodiment is merely illustrative in nature and is in no way intended to limit the scope of the patent and its application or uses. Based on the embodiments in the patent, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the patent.

[0029] It should be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the patent.

[0030] Unless otherwise specified, the relative arrangement, numerical expression and numerical value of the components and steps set forth in these embodiments do not limit the scope of the patent. At the same time, it should be clear that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the art can not be discussed in detail, and in all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other example values of the exemplary embodiments can have different values.

[0031] As Figure 1 The utility model discloses a kind of detection systems suitable for intelligent diesel engine high-pressure oil pump, including multi-dimensional sensor module 1, communication module 2, main control module 3, display module 4 and alarm module 5, multi-dimensional sensor module 1 is used to monitor the operating state of high-pressure oil pump, communication module 2 is transmitted to main control module 3 with the operating parameter collected by multi-dimensional sensor module 1, display module 4 is electrically connected with main control module 3, when main control module 3 detects that the operating parameter of high-pressure oil pump exceeds preset range, alarm module 5 carries out audible and visual alarm.

[0032] The multi-dimensional sensor module 1 includes a temperature sensor unit, a pressure sensor unit, a flow sensor unit, a piezoelectric vibration sensor, and a Hall effect displacement sensor. The pressure sensor unit is installed at the oil outlet of the high-pressure fuel pump to monitor the fuel pressure fluctuation in real time. The flow sensor unit is installed on the pipeline between the fuel pump and the high-pressure fuel pump to monitor the fuel flow in real time. The temperature sensor unit is installed on the shell of the high-pressure fuel pump to monitor the temperature of the high-pressure fuel pump. The piezoelectric vibration sensor is installed on the oil pump shell to detect mechanical vibration. The Hall effect displacement sensor is installed near the plunger to calibrate the plunger lift.

[0033] The multi-dimensional sensor module plays a crucial role in the monitoring system of the intelligent diesel engine high-pressure fuel pump. It includes a temperature sensor unit, a pressure sensor unit, a flow sensor unit, a piezoelectric vibration sensor, and a Hall effect displacement sensor, which are responsible for monitoring the key operating parameters of the high-pressure fuel pump and its related systems. The temperature sensor unit is installed on the shell of the high-pressure fuel pump to monitor the working temperature of the high-pressure fuel pump in real time. Excessive temperature indicates that there are problems such as excessive friction, poor cooling, or overload inside the pump, which may cause damage or performance degradation if not addressed in time. Through the temperature sensor, potential problems can be discovered in time and appropriate maintenance measures can be taken. The pressure sensor unit is installed at the oil outlet of the high-pressure fuel pump. Stable fuel pressure is crucial to ensure that fuel can be smoothly injected into the engine. If the fuel pressure is too high or too low, it may cause unstable engine operation or power reduction. Through the pressure sensor, the change of fuel pressure and the distortion of injection waveform can be monitored in real time to ensure that it fluctuates within the appropriate range. The pressure sensor is a high-frequency pressure sensor that can capture 200μs-level fuel pressure mutations. The flow sensor unit is installed on the pipeline between the fuel pump and the high-pressure fuel pump to monitor the fuel flow in real time. Stable fuel flow is crucial to ensure that the high-pressure fuel pump can continuously provide sufficient fuel. If the fuel flow suddenly increases or decreases, it may indicate that there are problems such as leakage, blockage, or abnormal working state of the fuel pump in the fuel system. Through the flow sensor, these problems can be discovered in time and appropriate repair measures can be taken. The piezoelectric vibration sensor is installed on the oil pump shell to detect mechanical vibration and analyze different frequency band faults such as low-frequency mechanical looseness and high-frequency cavitation phenomenon. The Hall effect displacement sensor is installed near the plunger or solenoid valve to accurately measure displacement and calibrate the plunger lift to ensure accurate injection timing.

[0034] As Figure 2As shown, the main control module 3 includes a microcontroller U1, which is an STM32F103. The STM32F103 microcontroller features a high-performance Cortex-M3 core, offering comprehensive functionality at a low price, and boasts advantages such as low power consumption and ease of development. It also has 64KB of program memory; operates at 2–3.6V; can operate stably in extreme temperature environments ranging from -40 to 85℃; possesses excellent interrupt capabilities, with its 37 general-purpose I / O ports connectable to 16 external interrupt lines; and can operate at a maximum frequency of 72MHz, ensuring a fast interrupt response speed.

[0035] like Figure 3 As shown, the temperature sensor unit includes a temperature sensor U2 and a resistor R1. Pin 2 of the temperature sensor U2 is connected to pin 37 of the microcontroller U1 via a data line. Resistor R1 is connected between pin 2 and pin 3 of the temperature sensor U2. The DS18B20 operates at a voltage range of 3–5V, has a configurable resolution of 9–12 bits, a measurable temperature range of -55–125℃, and a temperature measurement accuracy of ±1.2℃.

[0036] The pressure sensor unit uses a Druck PDCR 300 series oil pressure sensor. This sensor employs diaphragm isolation technology, combined with an integrated chip and wide voltage power supply, offering advantages such as strong anti-interference capability, good stability, and high accuracy, meeting the requirements of the monitoring system. This pressure sensor is a high-frequency pressure sensor capable of capturing fuel pressure changes in the 200μs range, ensuring real-time monitoring of fuel pressure fluctuations and guaranteeing the efficient and stable operation of the system.

[0037] The flow sensor unit includes a heavy oil flow meter, which communicates with the microcontroller U1 via communication module 2. Specifically, the heavy oil flow meter is a U-How Kanghui precision fuel flow meter. It is equipped with a data acquisition unit and optionally features a digital display, supporting RS485 / RS232 output interfaces.

[0038] The piezoelectric vibration sensor extracts the mechanical vibration spectrum from 0-10kHz, and the selected model is PCB 356A15. The Hall effect displacement sensor monitors the precision displacement at the ±0.005mm level, and the selected model is Honeywell RSC1225.

[0039] The multi-dimensional sensor module 1 further comprises a viscosity meter unit installed on the high-pressure oil pump leakage oil pipe for detecting the leakage of fuel and lubricating oil inside the high-pressure oil pump, thereby diagnosing the internal mechanical wear and aging degree of the sealing element in advance. The viscosity meter unit determines the viscosity value of the fluid by measuring the resistance change when the fluid passes through a specific path. By introducing the above-mentioned viscosity meter unit in the high-pressure oil pump detection system, the monitoring capability of the entire system can be effectively improved, providing more comprehensive protection for the reliable operation of the high-pressure oil pump. The viscosity meter unit selects Brookfield DV2T viscosity meter, which is directly connected to the STM32F103 main control module (baud rate 115200bps) through the RS485 interface, meeting the real-time requirement.

[0040] As shown in Figure 4 , the communication module 2 comprises an RS485 level conversion chip U5, a capacitor C25, a resistor R14, a resistor R17 and a resistor R20. The first pin of the RS485 level conversion chip U5 is connected to the 25th pin of the single-chip microcomputer U1, the second pin of the RS485 level conversion chip U5 is connected to the 13th pin of the single-chip microcomputer U1, the fourth pin of the RS485 level conversion chip U5 is connected to the 14th pin of the single-chip microcomputer U1, the capacitor C25 and the resistor R14 are connected in series between the eighth pin and the seventh pin of the RS485 level conversion chip U5, the resistor R17 is connected between the eighth pin and the sixth pin of the RS485 level conversion chip U5, and the resistor R20 is connected between the seventh pin and the sixth pin of the RS485 level conversion chip U5.

[0041] As shown in Figure 5 , the display module 4 comprises a display screen U6. The third pin of the display screen U6 is connected to the 41st pin of the single-chip microcomputer U1, the fourth pin of the display screen U6 is connected to the 42nd pin of the single-chip microcomputer U1, the fifth pin of the display screen U6 is connected to the 43rd pin of the single-chip microcomputer U1, the sixth pin of the display screen U6 is connected to the 26th pin of the single-chip microcomputer U1, and the fifth pin of the display screen U6 is connected to the 25th pin of the single-chip microcomputer U1. A 1.44-inch TFT color screen is selected as the display, which has a resolution of 128x128 and adopts I2C communication.

[0042] As shown in Figure 6 , the alarm module 5 comprises a buzzer, a resistor R5 and a triode Q1. The base of the triode Q1 is connected to the second pin of the single-chip microcomputer U1 through the resistor R5, the collector of the triode Q1 is connected to one end of the buzzer, and the other end of the buzzer is grounded.

[0043] The communication module transmits the operating parameters (such as temperature, pressure, flow, displacement, etc.) collected by the multi-dimensional sensor module to the main control module through RS485 and other communication protocols. The communication module ensures accurate and rapid transmission of data, providing a reliable data foundation for subsequent monitoring and early warning.

[0044] The display module uses a TFT color screen or other display to display key parameters such as temperature, pressure, and flow of the high-pressure oil pump in real time. The operator can observe the information on the display screen to understand the working condition of the high-pressure oil pump and take timely measures for maintenance or adjustment. When the main control module detects that the operating parameters of the high-pressure oil pump exceed the preset range, the alarm module will immediately start the audible and visual alarm function to remind the operator to pay attention and take appropriate measures. The presence of the alarm module ensures that the system can issue an alarm in time when a fault occurs, avoiding further deterioration of the situation.

[0045] The monitoring system for the intelligent diesel engine high-pressure oil pump monitors the operating state of the high-pressure oil pump in real time through the multi-dimensional sensor module, transmits the data to the main control module for processing and analysis through the communication module, triggers the alarm module for audible and visual alarm when an anomaly is detected, and displays the abnormal information through the display module. This ensures that the system can maintain high reliability and stability in complex and harsh weather environments, providing a strong guarantee for the safe operation of the intelligent diesel engine.

[0046] The above specific embodiments further illustrate the purpose, technical solutions, and benefits of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included within the scope of protection of the present application.

Claims

1. A detection system suitable for intelligent diesel high pressure fuel pump, characterized in that: The application relates to a multi-dimensional sensor module (1), a communication module (2), a main control module (3), a display module (4) and an alarm module (5), wherein the multi-dimensional sensor module (1) is used for monitoring the running state of a high-pressure oil pump; the communication module (2) transmits the running parameters collected by the multi-dimensional sensor module (1) to the main control module (3); the display module (4) is electrically connected with the main control module (3); and when the main control module (3) detects that the running parameters of the high-pressure oil pump exceed a preset range, the alarm module (5) performs sound and light alarm.

2. A detection system for intelligent diesel high pressure fuel pump as claimed in claim 1, wherein: The multi-dimensional sensor module (1) comprises a temperature sensor unit, a pressure sensor unit, a flow sensor unit, a piezoelectric vibration sensor and a Hall effect displacement sensor; the pressure sensor unit is installed at an oil outlet of the high-pressure oil pump and is used for monitoring the fuel pressure fluctuation in real time; the flow sensor unit is installed on a pipeline between a fuel pump and the high-pressure oil pump and is used for monitoring the fuel flow in real time; the temperature sensor unit is installed on the shell of the high-pressure oil pump and is used for monitoring the temperature of the high-pressure oil pump; the piezoelectric vibration sensor is installed on the oil pump shell and is used for detecting mechanical vibration; and the Hall effect displacement sensor is installed near a plunger and is used for calibrating the plunger lift.

3. A detection system for intelligent diesel high pressure fuel pump as claimed in claim 2, wherein: The main control module (3) comprises a single-chip microcomputer U1, and the single-chip microcomputer U1 is an STM32F103.

4. A detection system for intelligent diesel high pressure fuel pump as claimed in claim 3, wherein: The temperature sensor unit comprises a temperature sensor U2 and a resistor R1; the second pin of the temperature sensor U2 is connected with the 37th pin of the single-chip microcomputer U1 through a data line; and the resistor R1 is connected between the second pin and the third pin of the temperature sensor U2.

5. A detection system for intelligent diesel high pressure fuel pump as claimed in claim 3, wherein: The multi-dimensional sensor module (1) further comprises a viscometer unit, the viscometer unit is additionally installed on a high-pressure oil pump leakage oil pipe and is used for detecting the internal fuel and lubricating oil leakage of the high-pressure oil pump.

6. A detection system suitable for intelligent diesel high pressure fuel pump of claim 5, characterized in that: The communication module (2) comprises an RS485 level conversion chip U5, a capacitor C25, a resistor R14, a resistor R17 and a resistor R20; the first pin of the RS485 level conversion chip U5 is connected with the 25th pin of the single-chip microcomputer U1; the second pin of the RS485 level conversion chip U5 is connected with the 13th pin of the single-chip microcomputer U1; the fourth pin of the RS485 level conversion chip U5 is connected with the 14th pin of the single-chip microcomputer U1; the capacitor C25 and the resistor R14 are connected in series between the eighth pin and the seventh pin of the RS485 level conversion chip U5; the resistor R17 is connected between the eighth pin and the sixth pin of the RS485 level conversion chip U5; and the resistor R20 is connected between the seventh pin and the sixth pin of the RS485 level conversion chip U5.

7. A detection system suitable for intelligent diesel high pressure fuel pump of claim 6, characterized in that: The display module (4) comprises a display screen U6; the third pin of the display screen U6 is connected with the 41st pin of the single-chip microcomputer U1; the fourth pin of the display screen U6 is connected with the 42nd pin of the single-chip microcomputer U1; the fifth pin of the display screen U6 is connected with the 43rd pin of the single-chip microcomputer U1; the sixth pin of the display screen U6 is connected with the 26th pin of the single-chip microcomputer U1; and the fifth pin of the display screen U6 is connected with the 25th pin of the single-chip microcomputer U1.

8. A detection system suitable for intelligent diesel high pressure fuel pump of claim 7, characterized in that: The alarm module (5) comprises a buzzer, a resistor R5 and a triode Q1, the base of the triode Q1 is connected with the 2nd pin of the single-chip microcomputer U1 through the resistor R5, the collector of the triode Q1 is connected with one end of the buzzer, and the other end of the buzzer is grounded.

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