LVF阀门

When installing electric valves, the electric equipment is combined with the valve to form the electric valve. The equipment conditions of electric equipment largely depend on the condition of the valves. In order to ensure that the electric valve can operate correctly and reliably after being put into operation, in addition to ensuring the correct equipment of the electric equipment, attention should also be paid to the equipment of the valve. When using equipment valves, attention should be paid to the requirements for their matching operation with electric equipment.

(1) Valves should be installed on a horizontal pipeline as much as possible and the valve body should be vertical (the valve stem should be vertical and above the horizontal line). This is because the preferred orientation for electric equipment is vertical (the output sodium is vertical and installed above the valve body). From the perspective of the valve itself, vertical equipment is also advantageous because vertical equipment is easy to maintain and protect; When horizontally installed, due to uneven temperature of valve components and a simple sealing structure, it is not easy to repair.

(2) The rotation direction of the valve stem nut should be the same as the rotation direction of the output shaft of the electric equipment. From the end of the valve stem, the valve stem nut rotates clockwise to form a closed valve; Rotate counterclockwise to open the valve, which is the standard direction of rotation for the valve. When the rotation direction is different from the standard rotation direction, the valve should be modified because modifying electric equipment is much more difficult and sometimes even impossible.

(3) The operating mechanism of important valves should be guided to the location where the duty personnel can reach briefly, such as a channel at the same elevation as the control room. At this time, the electric equipment is selected as a floor standing device and connected to the valve through a universal joint.

(4) The valve stem nut should be installed correctly and lubricated with smooth grease to ensure smooth and outstanding performance. Regarding high-temperature valves, the valve stem nut section should have a disc spring that absorbs the thermal expansion of the valve stem. If the valve lacks a connection, the valve stem nut section should be modified according to on-site conditions to add a disc spring that absorbs the thermal expansion of the valve stem.