Gas and liquid contact apparatus – Contact devices – Injector type
Reexamination Certificate
2002-01-04
2004-06-01
Smith, Duane S. (Department: 1724)
Gas and liquid contact apparatus
Contact devices
Injector type
C261S116000, C261SDIG001, C137S896000
Reexamination Certificate
active
06742773
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
The present invention concerns a steam pressure reducing and conditioning valve.
BACKGROUND OF THE INVENTION
FIG. 3
illustrates a first embodiment steam pressure reducing and conditioning valve (hereinafter “conditioning valve”)
130
wherein hot and high pressure steam S inflowing from a first port
131
is desuperheated and depressurized by passing through a pressure reducing section
132
having scattered small holes
132
a
, and transformed into a rapid annular flow steam S
1
. The steam S
1
is discharged from a second port
133
as desuperheated and depressurized steam S
2
by supplying the rapid annular flow vapor S
1
with subcooled water mist W in a body
136
.
As shown in
FIG. 4
, the subcooled water mist W is injected from a nozzle
134
, into a moisture jet section
135
, and the jet pattern of this subcooled water mist W is conical. The subcooled water mist W injected from nozzle
134
collides with the steam S
1
, to cool down the steam S
1
.
Referring again to
FIG. 3
, when the subcooled water mist W injected from the nozzle
134
comes into contact with the pressure reducing section
132
in a hot state, the pressure reducing section
132
may crack and break due to an extreme temperature change. To prevent the cracking, the subcooled water mist W from the nozzle
134
should not come into contact with the pressure reducing section
132
.
Consequently, in the prior art, the nozzle
134
is disposed remote from the pressure reducing section
132
so that the subcooled water mist W injected from the nozzle
134
will not come into contact with the pressure reducing section
132
, thereby increasing the size of the body
136
and necessarily resulting in enlargement of the whole valve.
The superheated steam S is cooled by colliding the rapid annular flowing steam S
1
with the subcooled water mist W, and further dispersing the droplets (mist) of subcooled water W.
However, when the nozzle
134
is disposed remote from the pressure reducing section
132
for the aforementioned reason, it is difficult to disperse (subdivide) the subcooled water as the velocity of the annular flowing steam decreases with the distance from the pressure reducing section
132
.
REFERENCES:
patent: 1152176 (1915-08-01), Hennebohle
patent: 1307986 (1919-06-01), Randall et al.
patent: 1832652 (1931-11-01), Peebles
patent: 2095263 (1937-10-01), Moss
patent: 2207646 (1940-07-01), Van Der Ploeg
patent: 2354842 (1944-08-01), Spence
patent: 2421761 (1947-06-01), Rowand et al.
patent: 2924424 (1960-02-01), Titterington
patent: 2984468 (1961-05-01), Kuhner
patent: 3034771 (1962-05-01), Marris
patent: 3050262 (1962-08-01), Curtis
patent: 3207492 (1965-09-01), Zikesch
patent: 3219323 (1965-11-01), Spence
patent: 3220708 (1965-11-01), Matsui
patent: 3318321 (1967-05-01), Odendahl
patent: 3331590 (1967-07-01), Battenfeld et al.
patent: 3496724 (1970-02-01), Wilson
patent: 3648714 (1972-03-01), Laveau
patent: 3709245 (1973-01-01), O'Connor, Jr.
patent: 3719524 (1973-03-01), Ripley et al.
patent: 3722854 (1973-03-01), Parola
patent: 3732851 (1973-05-01), Self
patent: 3735778 (1973-05-01), Garnier
patent: 3746049 (1973-07-01), O'Connor, Jr.
patent: 3750698 (1973-08-01), Walchle et al.
patent: 3776278 (1973-12-01), Allen
patent: 3813079 (1974-05-01), Baumann et al.
patent: 3856049 (1974-12-01), Scull
patent: 3904722 (1975-09-01), Onodo et al.
patent: 3931371 (1976-01-01), Maurer et al.
patent: 3941350 (1976-03-01), Kluczynski
patent: 3978891 (1976-09-01), Vick
patent: 3981946 (1976-09-01), Soya et al.
patent: 3990475 (1976-11-01), Myers
patent: 4011287 (1977-03-01), Markey
patent: 4022423 (1977-05-01), O'Connor et al.
patent: 4068683 (1978-01-01), Self
patent: RE29714 (1978-08-01), Hayner et al.
patent: 4105048 (1978-08-01), Self
patent: 4128109 (1978-12-01), Chervenak et al.
patent: 4149563 (1979-04-01), Seger
patent: 4243203 (1981-01-01), Mack
patent: 4249574 (1981-02-01), Schnall et al.
patent: 4267045 (1981-05-01), Hoof
patent: 4270559 (1981-06-01), Wallberg
patent: 4278619 (1981-07-01), Tiefenthaler
patent: 4279274 (1981-07-01), Seger
patent: 4352373 (1982-10-01), Kay et al.
patent: 4383553 (1983-05-01), Platt
patent: 4387732 (1983-06-01), Hetz
patent: 4397331 (1983-08-01), Medlar
patent: 4407327 (1983-10-01), Hanson et al.
patent: 4413646 (1983-11-01), Platt et al.
patent: 4427030 (1984-01-01), Jouwsma
patent: 4442047 (1984-04-01), Johnson
patent: 4505865 (1985-03-01), Wullenkord
patent: 4567915 (1986-02-01), Bates et al.
patent: 4593446 (1986-06-01), Hayner
patent: RE32197 (1986-07-01), Self
patent: 4619436 (1986-10-01), Bonzer et al.
patent: 4624442 (1986-11-01), Duffy et al.
patent: 4671321 (1987-06-01), Paetzel et al.
patent: 4688472 (1987-08-01), Inglis
patent: 4718456 (1988-01-01), Schoonover
patent: 4739795 (1988-04-01), Ewbank et al.
patent: 4887431 (1989-12-01), Peet
patent: 4909445 (1990-03-01), Schoonover
patent: 4941502 (1990-07-01), Loos et al.
patent: 4967998 (1990-11-01), Donahue
patent: 5005605 (1991-04-01), Kueffer et al.
patent: 5012841 (1991-05-01), Kueffer
patent: 5156680 (1992-10-01), Orzechowski
patent: 5336451 (1994-08-01), Lovick
patent: 5380470 (1995-01-01), Jacobsson
patent: 5385121 (1995-01-01), Feiss
patent: 5390896 (1995-02-01), Smirl
patent: 5427147 (1995-06-01), Henriksson
patent: 5672821 (1997-09-01), Suzuki
patent: 5730416 (1998-03-01), Welker
patent: 5762102 (1998-06-01), Rimboym
patent: 5765814 (1998-06-01), Dvorak et al.
patent: 5769388 (1998-06-01), Welker
patent: 5819803 (1998-10-01), Lebo et al.
patent: 5924673 (1999-07-01), Welker
patent: 5931445 (1999-08-01), Dvorak et al.
patent: 6003551 (1999-12-01), Wears
patent: 6105614 (2000-08-01), Bohaychuk et al.
patent: 6250330 (2001-06-01), Welker
patent: 6289934 (2001-09-01), Welker
patent: 2002/0960552 (2002-07-01), Higuchi
patent: 37 17 128 (1988-12-01), None
patent: 298 01 762 (1998-04-01), None
patent: 595499 (1925-10-01), None
patent: 2082083 (1971-11-01), None
patent: 772058 (1957-04-01), None
patent: 2019532 (1979-10-01), None
patent: 61153082 (1986-07-01), None
patent: WO 91/00971 (1991-01-01), None
patent: WO 97 03313 (1997-01-01), None
Patent application Ser. No. 10/082,620, filed Feb. 22, 2002.
Stares, Gober and Robert; “4100 Series Control Valves”; Masoneilan; May 1997; 6 pages.
SteamForm Conditioning Valves, Yarway Tyco Corporation 1981.
Copes-Vulcon; SA-35 Steam Atomizing Desuperheater, White; Consolidated Industries, Bulletin 1164; May 1; 5 pages.
Patent application Ser. No. 10/039,345, filed Jan. 4, 2002.
Patent application Ser. No. 10/038,985, filed Jan. 4, 2002.
Hiroyuki Higuchi, Steam Pressure Reducing and Conditioning System, U.S. patent application Ser. No. 10/039,343, filed Jan. 4, 2002.
European Search report for Application 02007252 dated Apr. 3, 2003.
European Search report for Application 02007253.4 completed Jul. 24, 2002.
Product Brochure titled “Masonelian Steam Form II” printed Oct. 12, 2001 and distributed at Power Generation Show held in Las Vegas, Nevada on Dec. 11-13, 2001 and at Power Generation Show in Milan, Italy Jun. 11-13, 2002.
European Patent Office Search Report signed by Girbes Fontana, completed Sep. 8, 2003.
Dresser, Inc.
Smith Duane S.
LandOfFree
Steam pressure reducing and conditioning valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steam pressure reducing and conditioning valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steam pressure reducing and conditioning valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3300634