METHOD FOR CONTROLLING PROCESS OF FOLDING AIRLOCK DOUBLE-LEAF GATES AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC E02B7/20 

FIELD: measuring equipment.

SUBSTANCE: method for controlling the process of folding the airlock double-leaf gates, includes feeding a signal to the actuators for moving each of the lock gate leaves and controlling the position of each gate leaf by forming a mathematical model in the computing device, the inputs of which are connected to the signal outputs of the encoder. Based on the data from the encoder signal outputs, a spherical coordinate system is formed with the coordinate origin at the center of the vertical leaf rotation. Monitoring the position of each leaf point at its rotation is performed in this coordinate system. The angular position of the inner gate leaf walls against the lock chamber walls is determined by the value of all the encoders, as the azimuthal angle in the coordinate system to the point, which is the connection point of the absolute rotary encoder shaft with the measuring rods of the linear encoders. The position in the space is defined within the same coordinate system by the azimuthal and zenith angles of the same point, the latter of which is calculated on the basis of the data from the signal outputs of the linear encoders and constants, that define the position of the points on the leaf surface against its horizontal rotation axis, obtained empirically during the installation and erection works in relation to the device for implementing the method. The device for controlling the process of folding the airlock double-leaf gates contains an absolute rotary encoder and an absolute linear encoder installed on each leaf, a computing device, the inputs of which are connected to the signal outputs of the encoder, a leaf moving drive. The device contains an additional absolute linear encoder, the measuring rod of which, together with the measuring rod of the established absolute linear encoder, is connected to the absolute angular encoder shaft. The hull of the absolute linear encoders, being on some arbitrarily selected distance from each other, are connected to the lock chamber wall located close thereto. The absolute angular encoder is fixed rigidly on the rod bracket so that the gate leaf rotation axis and the absolute angular encoder shaft rotation axis are aligned. There is a gap between the highest point of the leaf rotation axis and the rod bracket, avoiding the rotation axis friction of the leaf and the mounting, and the rod bracket is rigidly connected to the gate leaf. The signal outputs of the additional encoder are connected to the computing device inputs. The device installation is made with the gates being folded, the measuring rods of the absolute linear encoders must make a right angle to the airlock chamber wall.

EFFECT: improving the accuracy of controlling the position of the hydraulic gate leaves.

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