Galv Cross Arm Cable Support Bracket
Product Name:Galv cross arm cable support bracket
Key words:Galv cross arm cable angle support bracket,Power cross arm cable support bracket,Cross arm cable support bracket for galv
Used to support angle for conner construction
Size:174x12x8
Part No.: Q.Q.Q.000020
Material elongation:20#
Finished: Galvanized,HDG,Plain,Painting,Dacromet,Electrogalvanizing,Oiled,Phosphorization,etc
Place of origina:China
HS Code:730820
Trademark:ZBRF
Color:Customized
Part:Power,Galv
Transport Package:Plastic Bag or Gunny bag and Wooden Case
Port of shipment:Shanghai Port,Taicang Port
Certification:CE,SGS,A.S
Galv Cross Arm Cable Support Bracket,Power Cross Arm Cable Support Bracket,Galv Cross Arm Cable Angle Bracket,Power Crossarm Cable Support TAICANG ZHONGBO RAILWAY FASTENING CO., LTD. , https://www.railfastener.com
In the process of automatic adjustment of production process, the control valve is an important and indispensable part, which is called the "hands and feet" of the production process automation and is one of the terminal control elements of the automatic control system. It is composed of two parts of the implementing agencies and the valve. From the hydraulic point of view, the control valve is a local resistance can vary the throttle element, the control valve is in accordance with the input signal by changing the stroke to change the drag coefficient, so as to achieve the purpose of regulating the flow. Angle control valve flow path is simple, small resistance, under normal circumstances apply to the positive use (installation). However, it is recommended that the angle control valve be used reversely at high pressure drop to improve the unbalanced force and reduce the damage to the valve core. At the same time, it is also beneficial to the flow of the medium and avoids the coking and clogging of the control valve. Angle valve in the reverse use, in particular, should be avoided for a long time a small opening to open the case, to prevent strong oscillations caused damage to the spool. Especially in the trial production stage of chemical plant, due to the low load at trial production, the design process conditions can not meet the requirements very quickly. The reverse angle valve should be avoided as long as possible to prevent the opening of small opening, Angle control valve is damaged. Angle control valve reverse use analysis At present, in addition to the butterfly valve and diaphragm valve is completely symmetrical in structure, all other structure of the control valve are asymmetric. When the regulating valve changes the flow direction, the value changes due to the change of the flow path. The normal flow of all types of control valves are to open the spool in the direction (forward use), the manufacturer also provides the ability to flow when the normal flow) value and flow characteristics. When the control valve is used in the reverse direction, the flow capacity of the control valve will increase when the fluid flows in the direction of closing the valve spool. Water linkage test, the simulation process conditions can not be quickly reached the normal state, the control valve in a long time at a small opening state use, due to the role of unbalanced force, there will be serious instability. Therefore, the control valve will produce a strong shock and harsh noise, resulting in the valve core quickly broken. In the normal process conditions, the opening of the control valve is moderate, even if the small opening is also short, so the control valve can be used normally and safely. Angle control valve is used in reverse, the reverse In general, the angle control valve are used to install the forward, that is, into the side. Only in the case of high pressure and high viscosity, easy to coke, containing suspended particulate matter case, it is recommended reverse installation, the material side into the bottom. The purpose of the reverse angle control valve is to improve unbalance force and reduce the wear on the valve core, but also conducive to high viscosity, coking and suspended particulate matter containing the flow, to avoid coking and plugging. Under normal circumstances, the angle control valve are not recommended for reverse use, only in the high pressure, high viscosity, easy to coke and suspended media containing particles is recommended reverse use. Reverse use, should avoid long-term small opening operation, especially in the test should pay more attention.