US 5,262,091 A · Steam injector system

Abstract

A steam injector system comprises a plurality of steam injectors each being provided with with a check valve adapted for water supply, a check valve adapted for steam supply, a check valve adapted for overflow and a check valve adapted for discharge and the respective water check valves, steam check valves, overflow check valves and discharge check valves are connected. In another aspect, a steam injector system comprises a plurality of first to last stage steam injectors arranged in series with each other, the last stage steam injector being provided with a relief valve disposed at a last stage overflow drain port, and a pressure pulsation absorbing device is disposed at least between the last stage overflow drain valve and the relief valve. A steam injector of an improved structure comprises an outer casing, a water nozzle disposed in the casing so as to extend axially therein, a central steam nozzle disposed inside the water nozzle coaxially therewith, a steam-water mixing nozzle disposed on a downstream side of the water nozzle and the central steam nozzle, and a peripheral steam nozzle mounted to the casing at a portion to supply steam from an outside into the steam-water mixing nozzle, wherein the steam is supplied so as to flow inside and outside the water.

Claims14

Dependent claims

A steam injector system comprising:

a plurality of steam injectors arranged in parallel with each other, each of said steam injectors being provided with a check valve adapted for water supply, a check valve adapted for steam supply, a check valve adapted for overflow and a check valve adapted for discharge;
and
a plurality of lines each connecting respective check valves in parallel with each other, said lines including a first line for connecting respective water supply check valves in parallel with each other, a second line connecting respective steam supply check valves in parallel with each other, a third line for connecting respective overflow check valves in parallel with each other, and a fourth line connecting respective discharge check valves in parallel with each other.

A steam injector system comprising:

a plurality of first to last stage steam injectors arranged in series with each other each including a water supply port, a steam supply port, an overflow drain port and a discharge port, said last stage steam injector being provided with a relief valve disposed at a last stage overflow drain port;
a plurality of lines each connecting in series a discharge port of a preceding stage steam injector with a water supply port of a following stage steam injector;
and
means at least disposed between the last stage overflow drain valve and the relief valve and adapted for absorbing pulsation of pressure of fluid passing the last stage steam injector caused at an operation time of the relief valve.

1 more element

Dependencies are inferred from the claim text.

Steam injector system

Life of this patent

Steam injector system

Life of this patent

Abstract

Claims14