Install and use the matters needing attention in the process of
New design, the installation of control system, in order to ensure that the regulator while driving to work, and make the system safe operation, a new valve before installation, should first check valve on the nameplate marking is consistent with the design requirements, but also respond to the following program debugging,
The basic error limits; All the schedule deviation; Back to the poor; Dead zone; Leakage (in demanding situations),
If it is on the original system of regulating valve for overhaul, except to check all the information, also respond to the stuffing box and the connection of the old valve sealing inspections etc,
In use at the scene, many often caused by the quality, not because the regulator itself but the regulating valve installation that caused by improper use, such as the installation environment, installation position and direction caused by improper or the reason such as the line is not clean, so the electric regulating valve during installation should pay attention to the following aspects:
1, the regulator belongs to the field instruments for environmental temperature should be around 25 ~ 60 degrees, relative humidity of 95% or less, if it is installed in the open air or high temperature applications, waterproof, should be taken measures to cool, where there is the source to stay away from source or increase the vibration-proof measures,
2, electric control valve should be installed vertically, commonly special circumstances can tilt, such as the Angle is very big, or too much weight on the valve when the valve itself should increase support protection,
3, the installation of electric control valve pipe generally do not too high above the ground or floor, height is greater than 2 m in pipe should set up the platform, as far as possible to facilitate operation hand wheel and facilitate maintenance,
4, electric control valve before installation for pipeline cleaning, remove dirt and welding slag, after installation, to ensure that no residue in the body, should also again to the valve and clean, the access into the medium should make all open valve, in order to avoid impurity stuck, after using the handwheel institutions, should be restored to the original neutral position,
5, in order to make the electric regulating valve in case of failure or repair can continue to make the production process, electric regulator should add by-pass line.
At the same time also should pay special attention to the electric control valve installation position whether accord with the requirement of technological process,
6, electrical part of the electric control valve installation shall be in accordance with the relevant requirements for electrical equipment construction, thus flameproof products should be in accordance with the "explosive dangerous location electrical equipment installation specification" requirements for installation, such as the scene copper-clad SBH type or other six or eight core, the outer diameter is about 11.3 mm rubber cable installation, in the use of maintenance, electricity in explosive areas... open repair and to pry, explosion-proof surface at the same time in dismantling the harm upon or scratch flame-proof surface, after repair to back into the original state of flame-proof requirement,
7, actuator reducer lubrication, should be paid attention to after repairing and generally don't unpick and wash oil, low-speed motor after assembly should also check whether the valve position and the opening of the valve position indicator,