Pump: the transmission power of the equipment and the production flow
Pump is conveying power liquid equipment and production process.
Once the pump failure, it will cause failure of other equipment, resulting in production. The manufacturing cost of the pump is high, work more complex, the pump working state of the importance of continuous measurement and monitoring is also bigger. Especially in the pump has some fault and not cause shutdown accident, effective measures is very necessary. Because the pump on the state of the equipment is very sensitive, so the pump is also a reflection of one indicator of the state of the equipment, such as slip ring sealing parts are damaged and the sliding bearing lubrication free operation cavitations induced wheel and casing damage.
In order to improve equipment availability, it is necessary to understand the relationship between equipment and pump body reaction, and this is the development of new type of intelligent circulating pump state diagnosis and measuring system of the basic premise and starting point, the purpose is to put the logic relations into the sensor element minimum configuration. From the analysis of fault statistics data service and the user can see, using the running state of 2 ~ 3 sensing element is enough to measure pump, and to diagnose the pump body to a certain extent. Use of the sensing element is:
Identify the pump in operation without lubrication state;
Determination of bearing temperature;
Determination of the vibration amplitude of pump.
To use this equipment to the user, can be expressed in concise form the pump working condition is very important. So, using a measuring device of a numerical measure, for each numerical measurements alone to explain, then put the measurement numerical approach is not feasible.
In this case, the user must be in the data on the basis of comprehensive and make their own logic, conclusion. On the basis of the actual work to set the appropriate threshold forecast police, which is also a very important step. Only this approach requires the user must grasp the basic knowledge of a certain pump in order to set the appropriate threshold for the pump. If this measure is only to play a role in the prevention of failure, then it is very limited to the expression of the pump body working state. And in determining the pump body is in a non normal state of work, people often will also put forward what is the pump body which component is damaged. Therefore, the evaluation of the working state of the pump body can not only stay in the simple determination of the individual limit value. If the data provided by each sensor for intelligent and intensive measurement and evaluation, you can greatly exceed the scope of the evaluation of a single index, and then fully grasp the working status of the pump body and equipment. For this purpose, the diagnosis system of the circulating pump can be used - Expert Pump. The system only needs to use a small amount of installed in the pump body sensing element, can be on the pump body and equipment working state of effective monitoring. The various signals of the system are connected with each other, and are compared and adjusted with the stored intelligence experts.
In addition, intelligent diagnostic methods such as fault list analysis method can be used. First, we must choose the wrong tree structure to be persuasive. Each measurement value is set with the corresponding measurement threshold, and then the numerical value is connected with each other. According to the connection to produce an error report, and through the display display. In intelligent choice, the threshold value selection and connection, this method can also append and provide some information: when the pump body has not yet reached the set threshold, the logical connection unit will send a signal, indicates that the pump will be entering a dangerous state. With the help of electronic devices and microprocessors, can use these data and signal connection.
Adopt this method can timely identify the damaged parts of pump body position, and sometimes even can determine the cause of the failure. Pump body of users can make statements such as the following: sliding bearing damage, wear, wheel by the card, conveying liquid medium viscosity is too high, adjust the wrong, the device is not being fed into the liquid, liquid containing too much gas, cutoff, bearing cooling by cooling motor but the interference of air.
The automatic and comprehensive evaluation of data, put forward specific treatment recommendations for operators, this is the characteristic of this new method. Local communication through the local display, infrared interface, bus connection, remote data transmission, these have created the conditions for the use of information. At present, all means of communication available can be used. Users can not only prevent the single pump failure, but also to grasp the running state of the equipment. Pump the expert system to have the new human-computer interaction technology, and the display and operator interface and simple operation and is easy to learn and understand the characteristics and reflexes.
Diagnosis and communication content can be set flexibly according to various occasions. The installation is very simple. This pump system is applicable to various types of. The obtained data can also be transmitted to a management system, a management system for the use of. Pump Expert system explosion-proof type can be applied with explosion hazard area.
Combined analysis of data and information is a great progress in improving the pump body and the operation effect of the whole process, it reduces the service and maintenance work intensity, is also moving towards the direction of the preventive maintenance of the first step.
