Papermaking machinery rotating field dynamic balancing technology

Papermaking machinery 2020 - rotating field dynamic balancing technology 07 - 02 de-kun wang papermaking machinery rotating field dynamic balance technology, mainly in machinery maintenance process, through the modern measurement and control technology, need not to carry on the fuselage disassembly, detection of paper machine performance. 1 overview paper mechanical rotating field dynamic balance technology, can be found in a timely manner imbalance, and quickly identify the reasons of the problems, and targeted to solve. Before assembly equipment for testing the performance of imbalance, reduced the equipment used in the process of the probability of rotating field imbalance. Rotating machinery running speed, the centrifugal force, the greater the more easy to cause the rotating field unbalance vibration, affect the production efficiency of paper machine. 2 dynamic balancing machine for rotating parts structure is more complex, need balancing on the dynamic balancing machine testing, to ensure that all the parameters meet the requirements, after again. Paper-making machinery in the process of dynamic balance check, mainly to test the rotor balance. If the balance of the rotating parts, rotational speed is greater than the rotor support of the balancing machine of bearing stiffness, prone to fuselage vibration problem. 3 3 field dynamic balancing technology. 1 field dynamic balancing system of the construction of paper making machinery in use process, often bearing failure, drying cylinder roller imbalances and other issues. To prevent papermaking machinery field unbalance phenomenon, need to build papermaking machinery field dynamic balance analysis system for the rotating parts, particular case mainly includes the following aspects: (1) the choice of scientific monitoring parameters. Papermaking machinery rotating field unbalanced performance monitoring equipment, need to have high precision, to be able to measure models of equipment parameters measured effectively. The main process is to determine the phase measuring accuracy, and the amplitude of vibration. Field dynamic balancing system, therefore, do not have to measure the actual contact with rotating parts, can measure the unbalanced parameters of rotating parts. (2) the choice of scientific monitoring location. To make the system to improve the accuracy of monitoring vibration information, need the choice of reasonable monitoring location, monitoring to determine the correct direction. Especially for the choice of measurement point, need a representative, to conform with the relevant conditions. (3) the system needs to choose according to measured object, eddy current sensors to measure phase displacement non-contact axis. Using pulse direction finding method, determine the speed of the rotor, thereby to provide shaft vibration and bearing vibration measurement based model. System for the installation of sensors, need to set up scientific measurement plane position and measurement point, make the reasonable distance, and confirmed the direction of sensor installation. 3. 2 technical method of dynamic balance test paper machinery field imbalance, the rotating parts for dynamic balance calibration technique, the concrete operation process is as follows: (1) the reasonable choice of cardan shaft and wheel frame, thus to determine the value of rotor shaft neck. (2) to determine the distance between the bearing through the measured value to adjust the distance between the supporting frame, pay attention to ensure that brace connection with universal wheel axis of rotation effectively, avoid the connection unstable phenomenon. (3) rotor need reasonable installed on the brace, through reversible wrench to adjust the position of the rotor, makes the direction of the rotor with the gimbal axis of rotation. This process needs to pay attention to check the concentricity, ensure accurate concentricity, using bolts, so as to complete the installation of the rotor. (4) the connection between the rotor and the gimbal axis of rotation, the need to use the same type of bolt, the security cover and layout. (5) set the parameters of the work station, make sure the tolerance and revolutions. 6 set after revolution, need to open the switch, through revolutions button to adjust the speed of rotation speed, speed up from low to high order. When the rotating speed of 100 r/min, the system can automatically display information. If speed beyond the standard value, the system will automatically to test the equipment, to real-time monitoring field running process of rotating parts, prevent the unbalanced vibration phenomenon occurred. 7 through many times test and adjustment, can effectively control the imbalance, reasonable adjust the unbalanced parameters, makes the rotor rotating speed in a stable range, thus to solve the problem of papermaking machinery field unbalanced rotating parts. 4 conclusion papermaking machinery rotating field dynamic balance technology can not remove the equipment under the condition of inspection of the rotating parts balance system parameters, improve work efficiency, save the imbalance of inspection time, can improve the efficiency of production of papermaking machine. （ Source: pulp technology)