Forward and inverse problems for flow orifice plates
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Does anyone know about the issue of distinguishing between the front and back sides of a flow orifice plate? How is this usually determined? Apart from the direction of flow
If the flow orifice plate has a direction, isn’t it indicated by an arrow on the plate?
The flow orifice plate is cone-shaped; it’s not very obvious, but it should be visible
The section in front of the flow orifice plate is longer than the section behind it.
The front side of the orifice plate is flat, while the back side is beveled; the flat surface should face the direction of the fluid flow.
Speaking of which, how should one determine the condition of pipes that have already been installed? It’s not possible to remove them just to make such a determination
The statement on the 5th floor is correct; generally, there is a \"trademark\" on the orifice plate, indicating its specifications. This trademark is located on the side facing the flow direction, while the beveled end faces the outlet of the fluid flow. I hope this helps answer your question.
The flat surface has a + sign; if it is installed in the wrong direction, the flow count will be inaccurate, and this can be seen.
The orifice flow meter is referred to as a sharp-orifice flow meter in instrumentation manuals, and its orifice consists of a cylindrical part and a frustum-shaped part. As the name implies, in a sharp-hole design, the smaller opening faces the direction from which the fluid comes, while the larger opening is the direction in which the fluid exits.
The 10th floor said the exact opposite! ! ! ! ! I don’t know; I can’t guess randomly. In the orifice plate, the straight sides of the central hole correspond to the direction from which the fluid comes, while the side with the acute angle corresponds to the direction in which the fluid goes.
One side has a flat edge while the other has a beveled edge; depending on the medium, such as those with low viscosity, the flat-edged side is located at the upstream end； The converse is true
The orifice plate has a direction, and special attention must be paid to it during installation; actually, it’s quite simple – just determine the direction. From upstream to downstream of the fluid, the flared shape decreases in size.
Domestic orifice plates are marked with “+”, while foreign orifice plates are marked with “up” and “down””
A orifice plate is a conical opening, with the smaller end on the upstream side and the larger end on the downstream side.
The orifice of a hole plate is conical, with the larger opening on the upstream side and the smaller one on the downstream side – it’s easy to see!
The large opening is at the downstream side, and the small opening is at the upstream side; it’s reversed on the upper side – the + sign is on the front side and the - sign on the back side. If it has already been put into use, the measured flow rate will be lower than the normal flow rate, which can be used as a reference for judgment.
It’s simple: following the direction of the fluid, the flare narrows from large to small.
The front side of the orifice plate is flat, while the back side is beveled; the flat surface should face the direction of the fluid flow
It’s such a simple question; I thought everyone would agree on it, as there shouldn’t be any disagreement. Agree with what was said on the 10th floor; the language is good too. In terms of appearance, the side with labels or brand names faces upstream. If it is installed backwards, the value will be much lower than the actual value. If you have any more questions, call me; I don’t have the necessary permissions to upload it.