METHOD OF CHECKING PRODUCTION EQUIPMENT PROTECTION SYSTEM AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2020 - IPC F01D21/02 

FIELD: protection systems; machine building.

SUBSTANCE: invention relates to protection systems of machines and mechanisms in various industries, for example, in power engineering, including in power machine building, where machines and mechanisms must be equipped with reliable protection systems allowing periodic inspections without removal of protected equipment from operation by supplying special test signals simulating output of parameters of controlled physical values to limit values. Disclosed is a method of inspecting a system for protecting production equipment by feeding a security input signal to a security channel, according to which a speed of signal passage is pre-decelerated in the inspected security channel, controlling the beginning of movement of the actuating element of the protection and after the beginning of its movement, removing the verification input signal and restoring the speed of the protection signal. Also disclosed is an electro-hydraulic protection system of a steam turbine as one of the types of production equipment, which realizes the method according to the invention.

EFFECT: purpose of invention is to improve controllability and reliability of production equipment protection systems.

2 cl, 1 dwg