Why does a small hole need to be made in the partition plate of the head of U-shaped tube heat exchanger?
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Why does the partition in the tube side head of the U-tube heat exchanger need to have a small hole? What is the function?
It functions as a tear hole to drain liquid. Because there is a height difference between the pipe box partition and the bottom tube bundle in contact with the tube bundle. If there is a hole, the liquid can be discharged downward through the partition.； Under certain circumstances, it can balance the pressure of the upper and lower chambers. ； In addition, the water can be completely drained after the water pressure test is completed. This post was last edited by Lan Meng on 2009-2-12 09:03 ]
According to GB151 5.2.3.3 ： If necessary, a drainage hole can be opened on the dividing plate, the diameter should be 6mm, which is what we usually call the tear hole. Its function is as mentioned above, 1. Balance pressure ； 2. Drain the liquid.
The tear hole balances the pressure between the two chambers； After the pressure test, the water is completely drained.
1. Balance pressure； 2. Drain the liquid.
There should be no pressure-balancing effect. Its function is simply as a tear hole to drain away fluid.
I didn't notice this problem, thank you for letting me know more.
Generally speaking, there are only two functions: 1. Balance pressure.； 2. Drain the liquid. Should the tear pores be drained of fluid?
This is the tear hole that balances pressure and drains fluid.
This is a pressure equalizing hole, not only for U-tube heat exchangers, but also for plain tube heat exchangers. The head ribs are also drilled, with a general diameter of 6mm. According to GB151 5.2.3.3 ： If necessary, a drainage hole can be opened on the dividing plate, the diameter should be 6mm, which is what we usually call the tear hole. Its function is as mentioned above, 1. Balance pressure ； 2. Drain the liquid. This post was last edited by vivo1314 on 2009-2-15 21:10 ]
balance pressure； 2. Drain the liquid
As mentioned before, 1. Drain the liquid； 2. Balance the pressure. It's said in the specification. Balance pressure is generally used when there are major problems inside the heat exchanger. When running, you don't want too much material to pass through, so the size is small.
The function of the tear pore is to balance pressure and drain away fluid. Another reply to the 7th floor: While draining the liquid, it also balances the pressure difference between the two chambers. If there is no pressure difference, the liquid will not flow by itself.
agree: The function of the tear pore is to balance pressure and drain away fluid. While draining the liquid, it also balances the pressure difference between the two chambers. If there is no pressure difference, the liquid will not flow by itself. :handshake :handshake :)