What is the working principle of the counterweights on the gas tank?
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When designing the gas tank, it is necessary to consider the design of the counterweights. I’m not quite sure how these counterweights are used during the normal operation of the gas tank Please help me figure out which of the following two scenarios I understand is correct: 1. To maintain a constant pressure in the gas tank, it is necessary to add weight blocks of different masses at various stages. 2. All counterweights should be placed on top of the gas tank at once, with no need for adjustment. O(∩_∩)O Thank you!
The design isn’t very clear; from our experience, it’s the second type – a wet gas holder works in this way: when there is a large amount of gas, the buoyancy is relatively high
My understanding is the second option: using the stable pressure calculated during design, all weight blocks are placed at the top of the gas tank at once, with no need for adjustment.
We use the second type; perhaps as a result of use, there may be slight changes in the pressure at the outlet of the gas tank, but this does not affect the process
Ours is a rubber-mold-sealed dry gas holder, and the four counterweights move up and down along with the piston in order to maintain a constant pressure inside the gas holder.
Reply to 1# wufei0079: There are two approaches, but I think neither is correct. 1) Whether it’s a single-layer or multi-layer gas tank, the counterweights need to be placed both at the top and at the bottom; as long as they are distributed evenly to prevent uneven weight distribution, that’s sufficient. 2. The total number of counterweights is designed to ensure the lifting pressure at each level, so no adjustment is required. If there are fluctuations in pressure during operation, it merely indicates that the lifting resistance has changed.
Outside the rubber diaphragm gas holder, cast iron counterweights are used to rise and descend along leveling tracks； Both the piston system inside the cabinet and the T-fence system require concrete breeding blocks to ensure the smooth operation of the piston system.
I have worked with both wet and dry gas tanks, and I have some understanding of ballast systems. The counterweights are used because the weight of the movable tower section (piston) is not sufficient; they help to ensure that the gas inside the cabinet reaches the designed pressure. Simply put, gravity is equal to the pressure inside the cabinet multiplied by the area. At the beginning of operation, a certain number of weight blocks are added to achieve the operating pressure; once normal operation is established, these weight blocks no longer move. It should be noted that initially, air is used for debugging, with a preliminary weight adjustment; however, during normal production, since the density of the medium differs from that of air, it is necessary to adjust the number of weight blocks at the start of operation until the desired working pressure is achieved.
For wet gas cabinets, it is essential to ensure that no section of the tower collapses.