How to achieve DCS control for mechanical seal water
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This post was last edited by sunjl1981 on 2013-1-6 at 20:56. Our factory relies entirely on regular inspections to ensure proper supply of water to the pump seals. If such inspections are not carried out, and there is a problem with the water supply pipeline for the seals, resulting in a disruption in the water supply, it is very easy for the seals to get damaged. Is there any way to achieve automatic control of the water supply to the seals? Please share your ideas -
Yes, our company has already implemented DCS automatic control； 1. Add pressure sensors and level gauges ； 2. Add three programmable valves (for water replenishment, emptying, and pressurization). 3. Write a program to set pressure and liquid level alarm values, enabling automatic alarms as well as automatic water replenishment and pressurization. If it is used only for monitoring, it can be implemented more easily without a programmable valve.
They really are rich! Control is relatively easy to implement, but the amount of instruments required is too large.
Since the diameter of the automatic valves used is quite small, the total investment is not high. If automatic control is to be achieved, these valves are also necessary; if only monitoring is required, pressure transmitters and level gauges are sufficient, resulting in lower investment costs.
These days, less and less water is used for flushing the mechanical seals in pumps; personally, I don’t think it’s necessary to add automatic control, as it’s not cost-effective from an economic perspective. No matter how automated it is, inspectors still need to carry out inspections. It is sufficient to strengthen the sense of responsibility among operators.
It’s not just having a normal amount of money; what would be the effect of using half of that amount to hire inspectors?
Of course, not all pump seals are under automatic control; our company only applies this approach to important individual pumps. I also agree with the opinion above – it is very necessary to strengthen inspections.
With all that money you have to invest in self-control, it would be more practical to simply switch to leak-free pumps that don’t require sealant water
When running a business, it is essential to consider costs and benefits, and to choose the appropriate approach based on the actual circumstances. If too much investment is made, with an unwavering focus on modernization and automation, it will not be worth it
Your company is really rich! Automatic control is also used for the seal water – I’ve never heard of or seen it done in this way before.