Hydraulic Pump Monitoring Control and Application Research

The hydraulic pump is used as the power element of the hydraulic system. It is driven by an engine or an electric motor and draws oil from a hydraulic oil tank to form a component that discharges pressure oil and sends it to the actuator. According to the structural division, hydraulic pumps can be divided into gear pumps, piston pumps, vane pumps and screw pumps. During the use of the hydraulic pump, the mechanical energy of the power machinery such as the internal combustion engine and the electric motor is converted into the pressure energy of the liquid, and is widely used in many aspects of life. This article will provide a series of examples of effective monitoring and control of hydraulic pumps through specific example analysis, clarifying the key significance of hydraulic pump monitoring, and in-depth discussion of its application in various fields and its important role.

With the continuous development of our country's industry, and the continuous development of various manufacturing, hydraulic pumps play an increasingly important role in them, and some problems in the use of the process will continue to show up. Therefore, it is extremely important to monitor the working process of the hydraulic pump and control its normal operation. It is only when the monitoring and control work is done that the largest hydraulic pump can be used in industrial projects, manufacturing and other fields. The role it plays in making it more widely used in life.

Common faults in the use of hydraulic pumps

Because the hydraulic pump body has low resistance to low temperature, the inner wall of the hydraulic cylinder needs to be sealed, the strength of the control valve is not high enough, and the hydraulic pump will inevitably affect the normal use of the pump during use. The following will list some hydraulic pumps. Common faults that occur during use:

1.1. The oil level in the hydraulic pump tank is too low, causing the hydraulic pump to not operate properly.

1.2. The relief pressure of the overflow valve is too low, resulting in damage to the relief valve.

1.3. In the process of lifting, the hydraulic pump is slow, and when the lifting occurs, the body is shaken and the heavy load lifting operation cannot be performed.

1.4. Dirty oil enters the tubing, causing oil to enter the body through the tubing, further forming pressure oil to the actuator.

1.5. The vane pump variable mechanism is slow and the eccentricity is zero.

1.6. Piston pump variables The manufacturing precision of the mechanism is not enough, the configuration gap is too small and unreasonable, the internal large friction causes the mechanism to fail to operate normally, and there is noise and internal damage to the machine.

1.7. The drive shaft is damaged, and the outside air enters the hydraulic system to change the normal pressure inside the system and it is unable to effectively suck and discharge the oil.

1.8. Oil leakage occurs in the boom cylinder and the machine cannot operate.

Through the above description of the failure of the hydraulic pump, we can easily find that the hydraulic pump is prone to many problems during the work process, so we need to regularly monitor it and effectively control it to ensure that it works normally and efficiently, and it can also detect failures earlier. In order to prevent the hydraulic pump body from causing more serious damage, thereby reducing losses and improving the quality and efficiency of the work.

Advantages of monitoring and controlling the hydraulic pump

2.1. In the working operation of the hydraulic system, the movement speed of the actuator can be observed. If the speed changes, it means that the operation of the hydraulic pump has failed. In addition, it is also possible to monitor the fluctuation range of the system's various pressure measurement points, to see the clarity of the oil in the hydraulic pump tank, and how much and how much the viscosity of the oil is to reflect the state of the entire system.

2.2. Real-time monitoring of hardware, such as the interface of the system, whether there is leakage on the inner wall, whether there is a lot of mistakenly attached grease, and whether the piston or the joystick is unstable or not, if it is found, it should be reinforced and repaired in time. Do a good job of preventing malfunctions.

2.3. Should pay attention to the noise during the operation of the hydraulic pump. If there is obvious noise in the hydraulic system, or a sharp impact or impact sound, it is necessary to first check whether there is leakage of the original part of the oil, or if the installation between the various parts causes problems. Excessive friction damages the device.

2.4. Touch the operating temperature and vibration of the system regularly. If the operating temperature of the instrument is too high, the internal mechanical system should be disassembled for maintenance and maintenance to prevent it from further damage or even burnt due to excessive temperature. If the instrument generates large vibrations or crawls during slower operation, inspection and maintenance should be carried out systematically.

2.5. Record and regularly check the overhaul of hydraulic components and the replacement of hydraulic oil. Take effective measures for cleaning and maintenance of the instrument. Adjust all indicators so as to achieve the highest working efficiency of the system. And the safe use of various components.

2.6. Using sensors and other high-precision instruments for monitoring and control, the characteristic parameters of the hydraulic system are amplified and displayed to the staff so that the staff can process and analyze the data, and early detection of problems in the system operation can be performed. Prevent, prevent further development of the fault, reduce the efficiency of the system operation and cause greater losses.

Hydraulic pump application and future development

The principle of the hydraulic pump is simple, the working efficiency is high and the scope of application is extensive, so more and more fields are involved in various fields of life.

First, pneumatic and hydraulic pumps have many applications in life. It is widely used in metallurgy, mining, machinery manufacturing, shipbuilding, petrochemical and other fields, especially for underground coal mining that requires explosion-proof treatment. Pneumatic hydraulic pump has good safety performance, light and easy to carry, high output pressure, and easy to use.

In addition, hydraulic pumps are also used in heavy-duty and large-scale equipment, such as rolling mill pressurizing systems and caster press systems. Hydraulic systems can withstand higher work weights. Therefore, they are used in construction machinery, aircraft rudder control, and steamships. Ship-machine control and high-speed response to military random systems play an essential role in impact resistance.

Due to the superior performance of the hydraulic pump system, its application prospects in various fields are also very wide. In the 21st century, the hydraulic pump will be high-pressured (the total volume of the device will be reduced, the working pressure will be increased, the performance will be greatly improved), and intelligence will be adopted (take intelligent control system, realize computer control, and adopt high-tech signal processing means such as electronic signals to control its flow , displacement and pressure, making the operation easier and more efficient), pure hydration (only the use of pure water as the internal medium of the hydraulic system, not only makes the price input, low cost, but also conducive to environmental protection and green construction, and greatly reduce the noise , development of internal control components as a whole optimization), etc., makes the advantages of hydraulic pumps more obvious, the future application areas will also be greatly expanded, so that the hydraulic pump system to better serve the more convenient in industrial manufacturing and life, to achieve application efficiency Maximize.

Hydraulic pumps have many advantageous properties. Therefore, they are now used as good power sources in many fields such as metallurgy, mechanical manufacturing, industrial and agricultural production, aerospace and navigation, and oil and mineral mining. The many problems that have been exposed in the application process have also aroused our attention, such as oil leakage, high noise, blockage of pipes, and frictional wear and tear, etc. Therefore, monitoring and control during the use of hydraulic pump systems The problem should be given great attention. As mentioned above, several effective detection control systems are also proposed to make the system achieve maximum efficiency and minimize the loss.

This article is from the Internet and edited by China Rescue Equipment Network.