Control Valve Solutions:
Control Valve Solutions:
The original failure phenomenon: the flow of the control valve decreases and the opening becomes larger after a period of operation.
After our engineer to inspect on-site, we found that a large number of impurities were blocked at the inlet of the flow hole of the cage, which caused the valve flow to decrease.
Reason: Because the flow hole of the multi-stage control valve’s cage is a 4mmx4mm labyrinth, the impurities in the pipeline are mostly sand and iron, which are stuck in the flow hole under the impact of high pressure and cause a blockage.
Since the renovation, the valve has been running well.
Modification project of flow characteristics of control valves at the feedstock inlet of Wuhan Petrochemical No. 2 catalytic unit.
Problem:
Tag No. FV105 and FV106 control valves are installed at the inlet port of the raw material. The raw material flow rate control needs to be very precise, especially when the flow rate is adjusted between 60~70 Ton. It needs to be adjusted according to the flow rate of 0.5 Ton each time. Due to the high adjustment accuracy requirements, After the valve is put into automatic operation, there will be 5%~10% fluctuations, affecting the end user’s normal production. The user can only change to manual operation, but it can only be set at 0.5% each time the valve position is given. Even then, Due to the positioner’s dead zone and the deviation of the valve itself, precise adjustment cannot be achieved.
Special Design: Cage-guided globe type control valve, with a special design of the flow window:
When the flow rate is below 33 Ton, the flow characteristic is an equal percentage; when the flow rate is 60~70Ton, the flow characteristic is linear; when the flow rate is above 70Ton, the flow characteristic is an equal percentage. In this way, it can meet the adjustment of small flow and large flow rate and meet the precise adjustment of valve opening between 56% and 75% when the flow is 60 ~ 70Ton. To realize the problem of the design flow characteristics of the partition.
FV105 And FV106 Control Valves
Shannxi Coalbed methane 60000Nm³h Natural Gas Liquefaction LNG Device
Boiler Feedwater System
84000nm³h Air Separation Unit & Air separation molecular sieve oxygen generator
Hydraulic Control Heavy Hammer Slow Closing Device
Nitrogen Equipment
The more you provide to your customers, the more you reflect your professionalism, and the more you win orders.
In engineering design, it is necessary to select and calculate the control valve to achieve the purpose of stable control. However, it is difficult to consider FL in the selection and calculation of the control valve. This article will analyze the general laws of FL, and at the same time
THINKTANK is the best manufacturer of pneumatic on-off globe control valves for textile mills, not only with an affordable price but also the stable quality and cost-effective spare parts that can be used in routine maintenance. We have cooperated with lots of textile mills in Pakistan where we have got
What is the positioner in the control valve? A control valve positioner is an important accessory for most types of valves. The primary function it performs, about your system’s setpoint and flow rate, pressure requirements. The controller system sends an input signal directly to the valve positioner and controls the
Fusible link valve manufacturer THINKTANK in China, we provide an excellent quality fusible link shutoff valve at an affordable price.
Regarding the provisions in the “Regulations on the Safe Operation of Air Separation Units”, the safe operation of oxygen valves should be emphasized, and safety precautions should be taken to avoid explosions due to excessive flow rate and other reasons. This article introduces the importance of coal chemical projects in
There are many types of industrial valves used in chemical plants, it depends on different performance requirements, valve body, drive method, and more specifications. To assistant you with high-performance plant planned, operating on schedule, and cost-effective maintenance, we are here to provide you with profitable and valuable valves. THINKTANK valves
If you are a supplier within the valve & instrument sector or in the process of developing this area of your business. We, THINKTANK absolutely is your BEST PARTNER. Contact us today, more opportunities for the future.
Know your cost at any time during a business negotiation, and quickly sign orders without waiting.
Only need you to leave your email address.
* THINKTANK takes your privacy very seriously. All information is only used for technical and commercial communication and will not be disclosed to third parties.
Just leave your name, email, and simple message or requirements, We will contact you within 1 hour.
WhatsApp: +86 185 1656 9221
Skype ID: sowell85
Wechat ID: +86 189 5813 8289