| 主权项 |
1. An apparatus for controlled cooling of hot plate or strip shaped metals using a cooling liquid, the apparatus comprising:
a header comprising a central supply pipe; a nozzle carrier and a plurality of nozzles arranged in the nozzle carrier; a first valve connected by a conduit to the header, the first valve comprising a float valve configured to allow air to escape from the header when the header is being filled with the cooling liquid and to prevent the cooling liquid from escaping when the header is full; the first valve comprising a non-return valve configured to prevent air from getting back into the header, when pressure required to produce a target flow of the cooling liquid is less than a pressure provided by a height of the system above the nozzles, wherein the float valve is connected between the header and the non-return valve; and a solenoid valve positioned in a connecting pipe leading to a connecting point between the float valve and the non-return valve, the solenoid valve in an open state permitting air to pass through the connecting pipe through the connecting point to the float valve so as to allow the air back into the header so as to drain the cooling liquid from the header, and in a closed state to prevent the air from passing to the float valve. |
