Valve positioner installation method and valve positioner protection and preservation method pneumatic ball valve Q641F-16C characteristics and working principle
Installation method of valve positioner and protection and preservation method of valve positioner
Introduction: With the development of industry, the use of valve positioner, often in the work of customers ask Changyang, valve positioner how to install? What is the installation method of valve positioner? How are valve positioners protected? How to store valve positioner? On the above problems, Changyang technology classification of 2 categories, a detailed solution to the valve positioner installation method, valve positioner protection method, valve positioner preservation method, I hope to help the need of friends.
Changyang valve positioner and actuator installation is correct or not, directly affect the use of the valve positioner effect, can ensure that the valve normal work
It can also reduce valve wear and reduce production cost.
A valve positioner installation method
1, first of all, the valve positioner and mounting plate is fixed together, the method is to open the valve positioner on the case, with three M5*20 screws
It is connected with the mounting plate through three holes in the shell. Reasonable installation is the valve positioner fixed on the mounting plate and the valve positioner installation accessories connected to the actuator are reasonably connected into one.
2. Connect the feedback part of the valve positioner with the actuator, loosen the valve stem nut on the regulating valve, and insert the support plate in the feedback part
Tighten between indicator and connecting nut.
3. Fix M10*15 screws in the two screw holes of the mounting plate equipped with the valve positioner and the actuator bracket according to the required position.
4. Insert the connecting pin on the feedback connecting plate in the feedback part into the CAM feedback dry opening groove of the valve positioner.
5. Different types of actuators should ensure that when the valve position is 50%, the CAM feedback lever should be in the horizontal position.
6. After adjusting all parts of the installation and connection, fix and lock them tightly.
(As shown in the figure: appearance of valve positioner)
Two, valve positioner protection and preservation methods
① Do not make the locator subjected to strong vibration and impact. The locator must be taken care of during transportation and operation.
② If the locator is used in the specified temperature, the sealing material will soon degrade so that the locator can not work normally.
(3) Thoroughly remove moisture and dust with clean gas.
④ If you leave the locator in the workplace for a long time, please cover it with a cover to prevent rain from entering the locator. If the environment is high temperature and humidity, measures should be taken to prevent condensation in the positioner. Products must be protected against condensation until export shipment.
Conclusion: IF YOU READ THE VALVE POSITIONER INSTALLATION MANUAL AND instructions CAREFULLY before INSTALLATION, YOU can avoid a lot of unnecessary trouble.
Pneumatic ball valve Q641F-16C characteristics and working principle
I. Introduction:
Q641f-16c pneumatic ball valve has O type ball valve and V type ball valve points. O ball valve adopts floating structure, the ball core is precision casting, the surface is plated with hard chromium, the seat is made of reinforced PTFE material, the channel opening and the pipeline caliber is the same, the flow capacity is great, the flow resistance is minimal, no leakage when closed, generally used as switch valve, especially suitable for high viscosity; V-type ball valve adopts fixed structure, the ball core is opened with V-shaped incision, can achieve shear containing fiber, granular medium. According TO THE DIFFERENT PROCESS EQUIPMENT CAN CHOOSE PNEUMATIC OR ELECTRIC ACTUATORS, RESPECTIVELY COMPOSED OF PNEUMATIC BALL valve AND electric BALL valve, PNEUMATIC ball valve to achieve proportional regulation MUST BE equipped with valve POSITIONER ELECTRIC ball valve to ACHIEVE proportional regulation must choose electronic ELECTRIC ACTUATORS OR servo amplifier.
Two, characteristics:
1, fluid resistance is small, full diameter ball valve basically no flow resistance.
2, simple structure, small volume, light weight.
3, tight and reliable. It has two sealing surface, and the current ball valve sealing surface material using a variety of plastics, good sealing, can achieve complete sealing. It has also been used in vacuum systems.
4, easy to operate, open and close quickly, from fully open to fully closed as long as the rotation of 90°, easy to remote control.
5, easy maintenance, ball valve structure is simple, sealing ring is generally active, disassembly and replacement are more convenient.
6, in the fully open or fully closed, the sealing surface of the ball and the valve seat and the medium isolation, the medium through, will not cause erosion of the valve sealing surface.
7, a wide range of application, diameter from small to a few millimeters, to a few meters, from high vacuum to high pressure can be applied.
8, because the ball valve in the opening and closing process of wiping, so can be used in the medium with suspended solid particles.
Three, working principle:
The ball valve only needs the operation of the pneumatic actuator with the air source rotation of 90 degrees and a small rotational moment to close tightly. Completely equal valve body cavity for the medium provides little resistance, straight through the flow channel. It is generally considered that ball valves are suitable for direct opening and closing. The main feature of ball valve is its compact structure, easy operation and maintenance, suitable for water, solvents, acids and natural gas and other general working media, but also suitable for poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene. Ball valve body can be integral, can also be combined.
Post time: Sep-15-2022
