Claims
- 1. A surge suppression system for dampening surge pressures comprising,
- a force main carrying a liquid,
- a flat plate orifice, said flat plate orifice causing a downstream vena contracta portion in said liquid,
- said flat plate orifice located in said main,
- the diameter of said orifice ranging from about 0.7 to about 0.9 of the diameter of said main,
- an injector means for introducing an amount of a gas into said main,
- said injection means having a small pipe, said pipe having a tip,
- said gas flowing through said pipe tip,
- said pipe tip located in said vena contracta portion so that said gas is dispersed into said liquid,
- said small pipe tip being located at about 0.25 to about 0.5 main diameters downstream from said flat plate orifice,
- said vena contracta portion located in the central portion of said main,
- and the amount of said introduced gas being in excess of that required to saturate said liquid so as to dampen surge pressures.
- 2. A surge suppression system for dampening surge pressures according to claim 1, wherein said main contains at least one turbulence causing device located downstream from said high turbulence causing device, said downstream device being a flat plate orifice.
- 3. A surge suppression system for dampening surge pressures according to claim 2, including a downstream turbulence causing device being located at least 40 main diameters downstream.
- 4. A surge suppression system for dampening surge pressures according to claim 1, wherein said gas is selected from the group consisting of oxygen, ozone in a carrier gas, nitrogen, carbon dioxide, air, natural gas, exhaust gas and distillate gas.
- 5. A surge suppression system for dampening surge pressures according to claim 1, wherein said force main is located in a system selected from the class consisting of a waste water collection system, a waste water treatment system, and a fluid transmission system.
- 6. A surge suppression system according to claim 1, wherein the location of said small pipe tip is from 0.36 to 0.39 main diameters downstream.
- 7. A surge suppression system according to claim 6, wherein said pipe tip has a small taper.
- 8. A surge suppression system according to claim 7, wherein said pipe tip is located at about 0.375 diameters downstream from said flat plate orifice.
- 9. A surge suppression system according to claim 1, wherein said injected gas is selected from the class consisting of oxygen, ozone in a carrier gas, nitrogen, carbon dioxide, air, natural gas, exhaust gas and distillate gas.
- 10. A surge suppression system according to claim 9, wherein said carrier gas is selected from the class consisting of air, oxygen enriched air, and oxygen.
- 11. A surge suppression system according to claim 9, including a downstream turbulent causing device being located at least 40 diameters downstream from said flat plate orifice.
Parent Case Info
This is a Division of application Ser. No. 531,095, filed Dec. 9, 1974, now U.S. Pat. No. 3,998,714, which is a continuation-in-part of a copending United States Patent Application bearing Ser. No. 355,738, System for Pollution Suppression, filed Apr. 30, 1973, now U.S. Pat. No. 3,853,764, which in turn is a continuation-in-part of an earlier application Ser. No. 100,333, filed Dec. 21, 1970, now U.S. Pat. No. 3,730,881, which in turn is a continuation-in-part of Ser. No. 813,382, Feb. 28, 1969, now U.S. Pat. No. 3,549,528, issued Dec. 22, 1970, which in turn is a continuation-in-part of application Ser. No. 362,118, filed Apr. 23, 1964, and now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (2)
Number |
Date |
Country |
236,892 |
Nov 1964 |
OE |
550,564 |
Mar 1923 |
FR |
Non-Patent Literature Citations (2)
Entry |
Chemical Engineer's Handbook, Perry et al., 4th Edition, 1963, pp. 5-10. |
Great Britain Water Pollution Research Board, 1959 Report, pp. 94-98. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
531095 |
Dec 1974 |
|
Continuation in Parts (4)
|
Number |
Date |
Country |
Parent |
355738 |
Apr 1973 |
|
Parent |
100333 |
Dec 1970 |
|
Parent |
813382 |
Feb 1969 |
|
Parent |
362118 |
Apr 1964 |
|