1. Overview
HCV combined hammer unloading valve is composed of a 2-position 6-way reversing valve, a 2-position 3-way electromagnetic reversing valve, a 2-position 3-way manual reversing valve and two one-way throttle valves. It is used in the hydraulic system of the speed control system of the hydropower station with the heavy hammer closing valve. When the hydraulic turbine generator set has an accident and low oil pressure, or the governor fails to close the water guide mechanism and the rotation speed of the hydraulic generator set is too high, the HCV combined weight unloading valve will act, and its spool will be under the action of differential pressure. Reversing, cutting off the governor, the upper and lower cavities of the relay are connected to the oil at the same time, and the weight of the weight closing valve closes the water guiding mechanism under the action of gravity to prevent accidents and ensure the normal operation of the hydro-generator set. Provides safe and reliable protection.
Through optimized design, this product has a higher degree of integration, smaller size, more reliable action, longer service life, convenient installation and small layout; its one-way throttle device can adjust the closing time of the relay, and can Play the role of hydraulic buffer.
2. Features
1. High degree of integration, small size, light weight, small footprint and easy installation.
2. Adopt hydraulic buffer device, no vibration sound and long service life.
3. The throttling device is easy to set, stable and reliable.
3. Dimensions
