Hot to cold steam transformer for turbine systems
First Claim
1. A steam-cycle power plant comprising:
- a. a steam source providing steam to a main conduit;
b. a heater in fluid communication with the main conduit to elevate a temperature of the steam;
c. a water source for providing water; and
d. a steam conditioning system in fluid communication with the main conduit downstream of the heater;
comprising;
i. a pressure vessel defining a controlled interior space;
ii. a mixing zone in the controlled interior space, in fluid communication with a steam inlet for receiving the steam from the main conduit and in fluid communication with a water inlet for receiving the water into the steam to produce cooled steam, wherein the mixing zone is adapted to provide for mixing of the steam and the water;
iii. a steam exit zone in the controlled interior space, in fluid communication with the mixing zone to receive the cooled steam, and in fluid communication with a steam outlet for delivery of the cooled steam to a steam destination; and
iv. a demister disposed in the controlled interior space in fluid communication between the mixing zone and the steam exit zone.
3 Assignments
0 Petitions
Accused Products
Abstract
A steam transformer (200) receives steam through a steam inlet (203), and the steam is mixed in a mixing zone (231) with water entering through a water inlet (205). Steam cooled by contact with the water exits the steam transformer through a cold steam outlet (216). Between the mixing zone (231) and the cold steam outlet (216) is positioned a demister (214) that restricts the passage of water droplets.
The steam transformer (200) is used to condition the steam temperature in steam turbine and combined cycle turbine facilities when adjustment of steam temperature is required, such as for cold starts of turbines. The steam transformer (200) may be installed into a bypass circuit or directly inline. A number of differing configurations and designs are disclosed.
84 Citations
19 Claims
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1. A steam-cycle power plant comprising:
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a. a steam source providing steam to a main conduit; b. a heater in fluid communication with the main conduit to elevate a temperature of the steam; c. a water source for providing water; and d. a steam conditioning system in fluid communication with the main conduit downstream of the heater;
comprising;i. a pressure vessel defining a controlled interior space; ii. a mixing zone in the controlled interior space, in fluid communication with a steam inlet for receiving the steam from the main conduit and in fluid communication with a water inlet for receiving the water into the steam to produce cooled steam, wherein the mixing zone is adapted to provide for mixing of the steam and the water; iii. a steam exit zone in the controlled interior space, in fluid communication with the mixing zone to receive the cooled steam, and in fluid communication with a steam outlet for delivery of the cooled steam to a steam destination; and iv. a demister disposed in the controlled interior space in fluid communication between the mixing zone and the steam exit zone. - View Dependent Claims (6, 7, 8, 11)
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2. A steam-cycle power plant comprising:
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a. a steam source providing steam to a main conduit; b. a heater in fluid communication with the main conduit to elevate a temperature of the steam; c. a water source for providing water; and d. a steam conditioning system in fluid communication with the main conduit downstream of the heater, comprising; i. a pressure vessel defining a controlled interior space; ii. a mixing zone in the controlled interior space, in fluid communication with a steam inlet for receiving the steam from the main conduit and in fluid communication with a water inlet for receiving the water into the steam to produce cooled steam, wherein the mixing zone is adapted to provide for mixing of the steam and the water; iii a steam exit zone in the controlled interior space, in fluid communication with the mixing zone to receive the cooled steam, and in fluid communication with a steam outlet for delivery of the cooled steam to a steam destination; and iv. a demister disposed in the controlled interior space in fluid communication between the mixing zone and the steam exit zone, additionally comprising a bypass circuit bypassing a section of the main conduit, the steam conditioning system disposed along the bypass circuit. - View Dependent Claims (3, 4, 5, 9, 10)
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12. A steam circuit in a steam-cycle power plant, comprising
a. a main conduit communicating steam between a steam source and a steam destination, and b. a bypass circuit in fluid communication with the main conduit, bypassing a section of the main conduit, further comprising a steam conditioning system comprising: -
i. a pressure vessel defining a controlled interior space; ii. a mixing zone in the controlled interior space, in fluid communication with a steam inlet for receiving a portion of the steam from the steam source, and in fluid communication with a water inlet for receiving the water into the steam to produce cooled steam, wherein the mixing zone is adapted to provide for mixing of the steam and the water; iii. a steam exit zone in the controlled interior space, in fluid communication with the mixing zone to receive the cooled steam, and in fluid communication with a steam outlet for delivery of the cooled steam to the steam destination; and iv. a demister disposed in the controlled interior space in fluid communication between the mixing zone and the steam exit zone. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification