It forms a flat fan jet of low-flow foam and feeds it from above into the annular gap and onto the tank wall. For automatic foam fire extinguishing systems for oil and petroleum products.
The camera is part of the combined automatic fire extinguishing systems for oil and petroleum products. It is used on vertical steel tanks with a pontoon and a floating roof, as well as on reinforced concrete ones. From an aqueous solution of a fluorosynthetic foaming agent, the chamber forms a flat fan jet of low—grade foam and feeds it from above - into the zone of the annular gap and onto the wall inside the tank.
The device consists of a foam generator connected to a cylindrical body with a removable bottom and a bursting safety membrane. The bottom is removed for revision and replacement of the membrane; the membrane itself allows foam to pass through under pressure, but does not allow the product to enter the chamber normally. A tip with a slit nozzle goes inside the tank, which forms a fan. The figure in the designation is the flow rate of the foaming agent solution in liters per second.
| Type | Low-fold foam chamber |
|---|---|
| Purpose | Combined automatic fire extinguishing systems for oil and petroleum products |
| Applications | RVS with a pontoon, RVS with a floating roof, reinforced concrete tanks |
| The principle of operation | Flat fan jet of low-fold foam, feeding from above into the annular gap and onto the wall inside the tank |
| Foaming agent | 6% aqueous solutions of fluorosynthetic foaming agents |
| Composition | Foam generator, cylindrical body with removable bottom, bursting safety membrane, tip with slot nozzle |
| Designation | The figure in the stamp is the consumption of the foaming agent solution, l/s |
| Climatic version | Y, placement category 1 for ГОСТ 15150-69 |
| Parameter | Meaning |
|---|---|
| Working pressure of the foaming agent solution, MPa, max | 0,9 |
| Consumption of foaming agent solution, l/s, max | 10 |
| Foam multiplicity, not less than | 8 |
| Foam fan feed angle, deg, not less | 90 |
| The length of the perimeter coverage by the jet from a height of 6.0 m, m, not less | 15 |
| Overall dimensions L × B × H, mm, max | 675 × 435 × 1100 |
| Connection dimensions, mm | D1 160, d 18, n 4 rel. |
| Weight, kg, max | 40 |
The range of solution consumption is 5, 10, 15, 20 and 25 l/s. It can be made of corrosion-resistant steel type 12Х18Н10Т. The parameters are given for КНП-10; for other standard sizes, they are specified according to the questionnaire.
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