CA1283059C - Separator drain boxes - Google Patents
Separator drain boxesInfo
- Publication number
- CA1283059C CA1283059C CA000497331A CA497331A CA1283059C CA 1283059 C CA1283059 C CA 1283059C CA 000497331 A CA000497331 A CA 000497331A CA 497331 A CA497331 A CA 497331A CA 1283059 C CA1283059 C CA 1283059C
- Authority
- CA
- Canada
- Prior art keywords
- drain
- vanes
- drain box
- box
- floor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
Abstract
P.14 ABSTRACT
Separator Drain Boxes It is common for engines of the gas turbine variety to have filters at their air intakes. An example of a system employing such a filter takes the form of a tube or duct into which is drain the air to be filtered, which tube contains a number of filtering components including pads of knitted mesh and a series of zig-zag vanes. These vanes remove any entrained water droplets, and the "condensed" water runs down the vanes (under gravity) into what is known as a "drain box", from which it is led away and disposed of.
The present invention proposes a novel design of drain box; instead of having the vanes bottom on a ledge in the drain box, above the drain box floor, leaving a gap between the bottom of the vanes and the floor of the drain box, and so allowing re-entrainment of the moisture, the present invention proposes that the vanes be extended to the floor of the drain box in intimate contact with the drain enclosure bottom surface. In addition to preventing re-entrainment, extending the vanes in this way provides additional structural vane support, and results in a stronger, more rigid filter system.
Separator Drain Boxes It is common for engines of the gas turbine variety to have filters at their air intakes. An example of a system employing such a filter takes the form of a tube or duct into which is drain the air to be filtered, which tube contains a number of filtering components including pads of knitted mesh and a series of zig-zag vanes. These vanes remove any entrained water droplets, and the "condensed" water runs down the vanes (under gravity) into what is known as a "drain box", from which it is led away and disposed of.
The present invention proposes a novel design of drain box; instead of having the vanes bottom on a ledge in the drain box, above the drain box floor, leaving a gap between the bottom of the vanes and the floor of the drain box, and so allowing re-entrainment of the moisture, the present invention proposes that the vanes be extended to the floor of the drain box in intimate contact with the drain enclosure bottom surface. In addition to preventing re-entrainment, extending the vanes in this way provides additional structural vane support, and results in a stronger, more rigid filter system.
Description
~EC.ll '05 16:E15 ~ 'URERIJFh'~ L~l`J~OII P.05 ~33~59 Sep~rator Drain BoxeF
The pre~ent inven~ion xelate~ to ~,eparator dr~ln boxes, and concern~ more particularly, but not e~clusively, drain boxeF ~r Beparator assemblie~ u~ed ~th ~a~
turbineF, i'ox 1andborne or marine applicAti~n~, It i~ common for en~ines o~ the ga~ turbine variety to have f11ters at their air intakes. The~e iilter~, not only get rid o~ potentially damaging solid particulate matter, tbey can alæo remoYe exce~s water (even ln Yapour ~orm) ~rom tbe air. An ex,~mple o~
a ~y~tem emplo~iDg such a filter i6 described in the Speeiflcation o~ oux European Patent Application ~o.
83~300,521.8 (Publication No. 0,087,229)l one embodlment o~ which takes the form of a tube or duct lnto which is drawn the air to be filtered, whlch tube contaiDs a number of ~iltering components includlng pads o~
knitted mesh and a series of zlg-~ag va~es. These vane~ remove any entrained water dropletF, that have got thi~ farl and the "conden~ed" water run6 do~n the vanes (under gravity) into what i~ known as a "drain box", ~ro~ which it is led away and dispo3ed o~. The present invention proposes a nov~,l de~lgn o~ drain box th~t guite eigni~icantly ilsprove~ the per~ormance ~ois~ure separatlng devlce~ by incorporatlng a ~ore efiicient system of drain water ~nd ~olids remoYal, 2~, and by providing for a more e~icient alr ~low throu~h the filter as~embly.
~ oi~ture ~eparators can carry a very hlgh water loading. However, the upper lim~t o~ water-carrying capaci~y i~ normally de~ine~ by the re-entrain~ent o~
30 large drop~ OI ~pray ~rom the drain box at the bottom o~ the moi~ture separator. This re-entrainmen'c i~ ~ore marked at hlgher velocities, thereby con~iderably reducing the water-handling capabillty of the ~ep~r~tor a~embly. lt i~, there~ore, ~ery important to de~lgn . ... :
r.
.2~331D~i9 the ~rain box ln such a way QS to reduce~or even elimillatç, re-entrainment over the range of oper~tlng velocitie~, ln ~dditlon to lmprovlDg the dralnlng o~
water and solids from the drain b~x.
In one cla~ic design o~ currently~available thre~-stage separator a~semb~y system (like that o~ the aforemention~d European Application, ~or in~tance~, ~h~
vane~ bottom on a ledge in the dr~in box, above the drain box floor, leaving a gap between the bottom oi the vanes and the floor of the dr~in box. Re-entrainment i5 reduced by having moisture and solid~ drain irom the vanes into the drain box for disposal thr~ugh a dra~n~ng means at the bottom o~ the drain box. However, un~or-tunately the gap formed in the space between the bottom 15 of the vanes and the floor o~ the drain box does not offer signi~icant resistance to the air ~low, ~nd as a result the gap becomes a major ~ource o~ re entrainment of moisture laden air into the ~ilter air flow, thereby diluting the ~iltering effect of the separation a~sembly.
In one proposal to correct this re-entralnment problem, the drain box is packed with a knitted me~h material (made of type gO35 "~IT" polypropylene, ~or e~ample). However, this packing "~olution" introduce~
: a new, and more significant~ proble~ in that a drain 2~ box wlth packing collect~ Elnd r~tain~ the corroslve eolids dralnlng ~rom the vanes, causlng ~ loading o~
d~ rt and ~alt sollds in th~ packin~ n~aterial and drain box trougl~, and inhibiting the e~icient drAin~n~ oi the drain box. In turn, the l~ck of proper drainl~g ~orces ~re~uent cleaning and maintenance oP the drain box~which ls a difficult tas~ due to the inefiicignt desig~ o~ the box. These ~actox~ lead lnevltably to ext~.nsive cvxrosion of the dr~in ~ox, and ultlmat~ly to possible structural ~ailure.
Thls problem - what to do to ~top air pa~si~g through the gap between the va~e bottom and drain ~'r ~ ïvl b' I 1 ~ ILl~ H,' LO~ 0l~1 p. 07 L2~33~)~;9 --3~
box ~loor - ha~ be~3et ~epar~tor a~embly de~igner~ Por some years, and as yet no "solution" (cuch a~ the knltted packing one mentioned above~ ha~ proved ~ati~i~ctory.
T~e present invention, thoughJ doe~ provlde such a 5 ~atisfacto~y solution - and, ~oreover, by what ~eem~ ~t I:lr6t sight to be a minor chAnge ln the deslgn o:E the vane/drain box portion o~ the a~sembly, yet wh~ch tur~s out to be o~ major ~ign~flcance~ It 1~ amazingly simple: ln the present invention, the v~ne~ utllized in the separator a6sembly to remove airborne w~ter vapour or droplets are extended to the f loor o~ the drain box ln intimate contact wlth the dra~n enclosure bottom sur~ace. Extending the vanes of the drain bo~ floor ~n this way provides additional structural vane ~upport, and re8ults ln a ~tronger, m~re rigid filter system, All need for knitted mesh or other p~cking material~
is elimi~ated, providing ~or no retention o~ corro~ive solids, ior e~e o~ ~lushing and maintenance, and ~or the virtual eliminatlon of corrosion leading to ~tructural ~ailure~
In one aspect, there~orel thi~ invention provide33 in a ~eparator o~ the kind described, the use o~ v~nes which e~tend all the way ~o the ~loor o~ the drain box.
Appart from the extension o~ the vane~ into contact with the drain bo~ floorl the a~sembly may be of any type, conventional or otherwi~e. Speci~ically, , the dr~ mean~ (the actu~l draining vents via ~h~ch collected moisture/dirt i6 removed from the drain box~ may be dlrectly under the vane~. ~owever, ir~ a 0 particul~rly preferred embodlmen~ the matter is arr~nged htly ~i~ferently, and there is pro~lded, in a dlrection down~tr~m OI the vanes~drain box combination proper, an exten~ion of the bosc (re.ther like ~ boot~trunk o~ a Dlotor car) whi ch i~ not part of the passageway by 35 whlch the Iiltered alr ts fed on and Qu~ ~f the as~emhly.
L ~ . 11 13~ lt~ Ut~t~llUr H;~ L.SI`il)lJI l P . 0~
~L2~33~ ;9 .
This extension, or drain cha~ber, 1~ open to the box proper, but closed to the r~st o~ the a~se~bly, ~nd the dr~ining means, or vent~, ~re po~ltloned ~ithin tbe chamber - thu~ dowrstream of the vanes rather than dlrectly beneath the ~anes themselves.
The e~lciency o~ the i'low o~ air through the ~iltcr o~ a ~y~tem incorporating the present invention i~ not negatively a~fected a~ in the previou61y~de0crlbed : three-~tage ~ystem utilizlng a drain box with an air gap below the vanes. In the present invention, air flow through the bottom o~ ~he vanes and the drain box wlll take a longer ~low path having greater re~l~taDce to ~low than the ~low of air through the ~ilter. Conse~uently, the ~low o~ air will be contained within the ~ilter ~lth a re~ultant greater efficiency due to the elimlnation o~
re-entralnment. The mo~t ~igni~cant ~actor, however, i6 the abllity of a separator ~abricated with the present inYention to per~orm eonsistently, as described herein,over the entire operating ran~e o~ the moisture 3epar~tor, A particularly beneficial advantage of this draln chamber idea i~ that a~ integral drain box wa~hdown system ~ay be incorporated to provide, ~or example, a multipIlcity of ~lushing por~, a remov~ble drain box trough, or a combination o~ both. The : ~a~hdown system proYides a means of ~lushing the drain chamber o~ debrls and corro~ive particles nor~ally retained by ~y~temx having drain boxes with packlng, and by ~ystems not lncorporatir~g the drain box feature~
The pre~ent inven~ion xelate~ to ~,eparator dr~ln boxes, and concern~ more particularly, but not e~clusively, drain boxeF ~r Beparator assemblie~ u~ed ~th ~a~
turbineF, i'ox 1andborne or marine applicAti~n~, It i~ common for en~ines o~ the ga~ turbine variety to have f11ters at their air intakes. The~e iilter~, not only get rid o~ potentially damaging solid particulate matter, tbey can alæo remoYe exce~s water (even ln Yapour ~orm) ~rom tbe air. An ex,~mple o~
a ~y~tem emplo~iDg such a filter i6 described in the Speeiflcation o~ oux European Patent Application ~o.
83~300,521.8 (Publication No. 0,087,229)l one embodlment o~ which takes the form of a tube or duct lnto which is drawn the air to be filtered, whlch tube contaiDs a number of ~iltering components includlng pads o~
knitted mesh and a series of zlg-~ag va~es. These vane~ remove any entrained water dropletF, that have got thi~ farl and the "conden~ed" water run6 do~n the vanes (under gravity) into what i~ known as a "drain box", ~ro~ which it is led away and dispo3ed o~. The present invention proposes a nov~,l de~lgn o~ drain box th~t guite eigni~icantly ilsprove~ the per~ormance ~ois~ure separatlng devlce~ by incorporatlng a ~ore efiicient system of drain water ~nd ~olids remoYal, 2~, and by providing for a more e~icient alr ~low throu~h the filter as~embly.
~ oi~ture ~eparators can carry a very hlgh water loading. However, the upper lim~t o~ water-carrying capaci~y i~ normally de~ine~ by the re-entrain~ent o~
30 large drop~ OI ~pray ~rom the drain box at the bottom o~ the moi~ture separator. This re-entrainmen'c i~ ~ore marked at hlgher velocities, thereby con~iderably reducing the water-handling capabillty of the ~ep~r~tor a~embly. lt i~, there~ore, ~ery important to de~lgn . ... :
r.
.2~331D~i9 the ~rain box ln such a way QS to reduce~or even elimillatç, re-entrainment over the range of oper~tlng velocitie~, ln ~dditlon to lmprovlDg the dralnlng o~
water and solids from the drain b~x.
In one cla~ic design o~ currently~available thre~-stage separator a~semb~y system (like that o~ the aforemention~d European Application, ~or in~tance~, ~h~
vane~ bottom on a ledge in the dr~in box, above the drain box floor, leaving a gap between the bottom oi the vanes and the floor of the dr~in box. Re-entrainment i5 reduced by having moisture and solid~ drain irom the vanes into the drain box for disposal thr~ugh a dra~n~ng means at the bottom o~ the drain box. However, un~or-tunately the gap formed in the space between the bottom 15 of the vanes and the floor o~ the drain box does not offer signi~icant resistance to the air ~low, ~nd as a result the gap becomes a major ~ource o~ re entrainment of moisture laden air into the ~ilter air flow, thereby diluting the ~iltering effect of the separation a~sembly.
In one proposal to correct this re-entralnment problem, the drain box is packed with a knitted me~h material (made of type gO35 "~IT" polypropylene, ~or e~ample). However, this packing "~olution" introduce~
: a new, and more significant~ proble~ in that a drain 2~ box wlth packing collect~ Elnd r~tain~ the corroslve eolids dralnlng ~rom the vanes, causlng ~ loading o~
d~ rt and ~alt sollds in th~ packin~ n~aterial and drain box trougl~, and inhibiting the e~icient drAin~n~ oi the drain box. In turn, the l~ck of proper drainl~g ~orces ~re~uent cleaning and maintenance oP the drain box~which ls a difficult tas~ due to the inefiicignt desig~ o~ the box. These ~actox~ lead lnevltably to ext~.nsive cvxrosion of the dr~in ~ox, and ultlmat~ly to possible structural ~ailure.
Thls problem - what to do to ~top air pa~si~g through the gap between the va~e bottom and drain ~'r ~ ïvl b' I 1 ~ ILl~ H,' LO~ 0l~1 p. 07 L2~33~)~;9 --3~
box ~loor - ha~ be~3et ~epar~tor a~embly de~igner~ Por some years, and as yet no "solution" (cuch a~ the knltted packing one mentioned above~ ha~ proved ~ati~i~ctory.
T~e present invention, thoughJ doe~ provlde such a 5 ~atisfacto~y solution - and, ~oreover, by what ~eem~ ~t I:lr6t sight to be a minor chAnge ln the deslgn o:E the vane/drain box portion o~ the a~sembly, yet wh~ch tur~s out to be o~ major ~ign~flcance~ It 1~ amazingly simple: ln the present invention, the v~ne~ utllized in the separator a6sembly to remove airborne w~ter vapour or droplets are extended to the f loor o~ the drain box ln intimate contact wlth the dra~n enclosure bottom sur~ace. Extending the vanes of the drain bo~ floor ~n this way provides additional structural vane ~upport, and re8ults ln a ~tronger, m~re rigid filter system, All need for knitted mesh or other p~cking material~
is elimi~ated, providing ~or no retention o~ corro~ive solids, ior e~e o~ ~lushing and maintenance, and ~or the virtual eliminatlon of corrosion leading to ~tructural ~ailure~
In one aspect, there~orel thi~ invention provide33 in a ~eparator o~ the kind described, the use o~ v~nes which e~tend all the way ~o the ~loor o~ the drain box.
Appart from the extension o~ the vane~ into contact with the drain bo~ floorl the a~sembly may be of any type, conventional or otherwi~e. Speci~ically, , the dr~ mean~ (the actu~l draining vents via ~h~ch collected moisture/dirt i6 removed from the drain box~ may be dlrectly under the vane~. ~owever, ir~ a 0 particul~rly preferred embodlmen~ the matter is arr~nged htly ~i~ferently, and there is pro~lded, in a dlrection down~tr~m OI the vanes~drain box combination proper, an exten~ion of the bosc (re.ther like ~ boot~trunk o~ a Dlotor car) whi ch i~ not part of the passageway by 35 whlch the Iiltered alr ts fed on and Qu~ ~f the as~emhly.
L ~ . 11 13~ lt~ Ut~t~llUr H;~ L.SI`il)lJI l P . 0~
~L2~33~ ;9 .
This extension, or drain cha~ber, 1~ open to the box proper, but closed to the r~st o~ the a~se~bly, ~nd the dr~ining means, or vent~, ~re po~ltloned ~ithin tbe chamber - thu~ dowrstream of the vanes rather than dlrectly beneath the ~anes themselves.
The e~lciency o~ the i'low o~ air through the ~iltcr o~ a ~y~tem incorporating the present invention i~ not negatively a~fected a~ in the previou61y~de0crlbed : three-~tage ~ystem utilizlng a drain box with an air gap below the vanes. In the present invention, air flow through the bottom o~ ~he vanes and the drain box wlll take a longer ~low path having greater re~l~taDce to ~low than the ~low of air through the ~ilter. Conse~uently, the ~low o~ air will be contained within the ~ilter ~lth a re~ultant greater efficiency due to the elimlnation o~
re-entralnment. The mo~t ~igni~cant ~actor, however, i6 the abllity of a separator ~abricated with the present inYention to per~orm eonsistently, as described herein,over the entire operating ran~e o~ the moisture 3epar~tor, A particularly beneficial advantage of this draln chamber idea i~ that a~ integral drain box wa~hdown system ~ay be incorporated to provide, ~or example, a multipIlcity of ~lushing por~, a remov~ble drain box trough, or a combination o~ both. The : ~a~hdown system proYides a means of ~lushing the drain chamber o~ debrls and corro~ive particles nor~ally retained by ~y~temx having drain boxes with packlng, and by ~ystems not lncorporatir~g the drain box feature~
3~ o~ the present inventlon. The descrlbed Plushlne ~ature oi thi~ invention prevents excessive corroslon in the ~rea moBt pro~e to galvanie and chemicRl ero~ion.
The improved separator assembly o~ the invention allows a ~re~ unimpeded ~low o~ drain ~ater and 35 ~u~pended sollds to the draln port~ in the draln box exten~ion. l~e drain port~ may be amply proportloned `- ~2830S9 ~o accept the ~ull dr~inage ~low regardles~ o~ the relatlve position of the sy~tem with xe~pect to the horizontal plane. By way o~ example, ~hen the sy~tem 18 i~talled in a ~ea-going ve~sel, the ship's pitch or roll does not a~ect the operation o~ the d~ain connection~ or i~pede their flo~ capabilities, The drain chamber ln the preferred embodiments of the lnvention i~ located downstre~ o~ the van~ bank, ~nd in thi B way is capa~le of providlng ~ tull, unobstructed, area ~or the ~ree ~lvw o~ the drain water, This drain chamber also provides an excellent means o~
preventing partlcle re-entrainment, as can occur in other moisture separation dev~ces, by having a large uni~peded ~low area ~or ~ull drop of~ ~nd capture o~
particles, The design of the drain box of this invention can also provides a supplementary means o~ ~tructural integrity by enclosing the ~oisture separation sy~tem in a semi-mon~que enclosure to e~hance the shock and vibratlon capabilities o~ the complete sy~tem.
The separator assembly of the present inventlon provides for greater flexibility in the ~anner o~
~lu~hlng the dr~in box, utilizlng (at lea~t in it6 pre~erred embodiments):-a multipliclty of flushing ports loc~ted in one or more locations in the top, ~nds and~or sides o~ the drain box or drain box extension;
a ~lu~hing o~ the drain box with ~resh water, ~aturated steam or iresh ~ater ~nd 6aturated steam in comblnation;
a ~anu~l ~lushing oi the drain box through ~lushlng port~ u~ing:
i) hand-held ~lexible hoses or plpes, and/or li~ hand-held rigid lances inserted through port~;
an automatic flu~hing o~ the drain box ~ith ilexible L,'L~ ' L~ 1 .CI I 1 c,~lr~c~r~lr ~ L~JI IL~ P. 10 --6~
or rigid line~ temporarily or permanently attached to ~elected fluRhing ports, oper~ted by any o~
a variety of manual or autom~tie timing deYice~;
any combina~ion o~ ~lu~hing ports, manual operatlon, ~utomatic ~per~tion, fresh water flushing, ~turated steam ~lushing, through permanent or ~emporary connectlons to any of the ~lushing ports, to accomplis~ the desired el.iminatioD of unwanted debris o~ salt and solid particles from the drain box or drain box extension.
The de~cribed preferred flushing system o~ the present invention will ellminate unwanted de~ris by di6sDlving the ~alt particles and utilizing the washdown ~low velocity to dislodge the remaining undis~olved debris. The movem~nt of this ~ u~hing ~low o~ water and debris is channeled.into the existing drain connections of the drain box or drain box exten~ion. This ~lush and drain feature i~ uni~ue in that it is not available in any other ~oi~tùre separation sy~tem, but is exclusively available in that ~f the present invent~on.
The present inve~tion provldes a ~eparator assembly having an improved~ mor~ eff~clent air ~low through the vane bank; an i~proYed, more ef~ici~nt syst~m or di~solving and/or flu5bing sol~d6 and salts from the draln box; and an lmproved, mor~ efiicient drain water ~nd ~olids removal SyBtem ior draini~g such water and solids from the drain canal of the dra~n box ~nd drain ~ox exten6ion.
According to a broad aspect, the invention relates to a drain box for use in a gas turbine separator assembly wherein the drain box is mounted below a duct of the separator to receive vanes passing through an upper region of the drain box to contact the base thereof, and ~ comprising a plurality of flushing ports which allow : cleaning substances to be flushed through the drain box in order to remove particles of matter collected therein.
Qne embodiment of the invention is now described, though by way of illustration only, with reference to the accompanying Drawings, in which:-Figure 1 shows a diagrammatic vertical cross-section through the final stage (the vane/drain box section) of a separator assembly of the invention; and Figure 2 shows a diagrammatic top plan view (partly in section) of the assembly of Figure 1.
.~
~,~...1l ~ l tl: C~ H~ 1,>~ Ll.Jr~ P.lc~
~l2~33~S9 -B-The .vane~dxai~ box section o~ the ~eparator assembly o~ ~igures 1 and 2 compri6e~ a duct (only the duct ~loor 11 - the lower edge/6urf~ce - is shown) at or near the downstre~m end o~ which is an array o~
vertical vanes ~12). The vanes extend below the botto~
o~ the duct floor il and into a "clo~ed" drain box (13) that is sealingly mounted on the und~r~ide o~ the duc~ ~loor; the v~nes extend into actual contact (at 1~) with the bottom of the drain box.
The drain box 13 has a rearward extension (15) lnto which ~lows the water (not shown) drainlng o~ tbe vane~
12, and at the bottom of this extension is a ~eries ~i draln pipes (as 16; only two are here shown) through which the water may be lead o~ and disposed o~. The box's rear extenslon 15 also has, ln its upper and side ~urfaces, a series o~ plugged ~lushing ports ~us 17) through which water, steam and so on may be forced ln to help clear the box o~ any solids (dirt or ~cale) lodged therein.
The improved separator assembly o~ the invention allows a ~re~ unimpeded ~low o~ drain ~ater and 35 ~u~pended sollds to the draln port~ in the draln box exten~ion. l~e drain port~ may be amply proportloned `- ~2830S9 ~o accept the ~ull dr~inage ~low regardles~ o~ the relatlve position of the sy~tem with xe~pect to the horizontal plane. By way o~ example, ~hen the sy~tem 18 i~talled in a ~ea-going ve~sel, the ship's pitch or roll does not a~ect the operation o~ the d~ain connection~ or i~pede their flo~ capabilities, The drain chamber ln the preferred embodiments of the lnvention i~ located downstre~ o~ the van~ bank, ~nd in thi B way is capa~le of providlng ~ tull, unobstructed, area ~or the ~ree ~lvw o~ the drain water, This drain chamber also provides an excellent means o~
preventing partlcle re-entrainment, as can occur in other moisture separation dev~ces, by having a large uni~peded ~low area ~or ~ull drop of~ ~nd capture o~
particles, The design of the drain box of this invention can also provides a supplementary means o~ ~tructural integrity by enclosing the ~oisture separation sy~tem in a semi-mon~que enclosure to e~hance the shock and vibratlon capabilities o~ the complete sy~tem.
The separator assembly of the present inventlon provides for greater flexibility in the ~anner o~
~lu~hlng the dr~in box, utilizlng (at lea~t in it6 pre~erred embodiments):-a multipliclty of flushing ports loc~ted in one or more locations in the top, ~nds and~or sides o~ the drain box or drain box extension;
a ~lu~hing o~ the drain box with ~resh water, ~aturated steam or iresh ~ater ~nd 6aturated steam in comblnation;
a ~anu~l ~lushing oi the drain box through ~lushlng port~ u~ing:
i) hand-held ~lexible hoses or plpes, and/or li~ hand-held rigid lances inserted through port~;
an automatic flu~hing o~ the drain box ~ith ilexible L,'L~ ' L~ 1 .CI I 1 c,~lr~c~r~lr ~ L~JI IL~ P. 10 --6~
or rigid line~ temporarily or permanently attached to ~elected fluRhing ports, oper~ted by any o~
a variety of manual or autom~tie timing deYice~;
any combina~ion o~ ~lu~hing ports, manual operatlon, ~utomatic ~per~tion, fresh water flushing, ~turated steam ~lushing, through permanent or ~emporary connectlons to any of the ~lushing ports, to accomplis~ the desired el.iminatioD of unwanted debris o~ salt and solid particles from the drain box or drain box extension.
The de~cribed preferred flushing system o~ the present invention will ellminate unwanted de~ris by di6sDlving the ~alt particles and utilizing the washdown ~low velocity to dislodge the remaining undis~olved debris. The movem~nt of this ~ u~hing ~low o~ water and debris is channeled.into the existing drain connections of the drain box or drain box exten~ion. This ~lush and drain feature i~ uni~ue in that it is not available in any other ~oi~tùre separation sy~tem, but is exclusively available in that ~f the present invent~on.
The present inve~tion provldes a ~eparator assembly having an improved~ mor~ eff~clent air ~low through the vane bank; an i~proYed, more ef~ici~nt syst~m or di~solving and/or flu5bing sol~d6 and salts from the draln box; and an lmproved, mor~ efiicient drain water ~nd ~olids removal SyBtem ior draini~g such water and solids from the drain canal of the dra~n box ~nd drain ~ox exten6ion.
According to a broad aspect, the invention relates to a drain box for use in a gas turbine separator assembly wherein the drain box is mounted below a duct of the separator to receive vanes passing through an upper region of the drain box to contact the base thereof, and ~ comprising a plurality of flushing ports which allow : cleaning substances to be flushed through the drain box in order to remove particles of matter collected therein.
Qne embodiment of the invention is now described, though by way of illustration only, with reference to the accompanying Drawings, in which:-Figure 1 shows a diagrammatic vertical cross-section through the final stage (the vane/drain box section) of a separator assembly of the invention; and Figure 2 shows a diagrammatic top plan view (partly in section) of the assembly of Figure 1.
.~
~,~...1l ~ l tl: C~ H~ 1,>~ Ll.Jr~ P.lc~
~l2~33~S9 -B-The .vane~dxai~ box section o~ the ~eparator assembly o~ ~igures 1 and 2 compri6e~ a duct (only the duct ~loor 11 - the lower edge/6urf~ce - is shown) at or near the downstre~m end o~ which is an array o~
vertical vanes ~12). The vanes extend below the botto~
o~ the duct floor il and into a "clo~ed" drain box (13) that is sealingly mounted on the und~r~ide o~ the duc~ ~loor; the v~nes extend into actual contact (at 1~) with the bottom of the drain box.
The drain box 13 has a rearward extension (15) lnto which ~lows the water (not shown) drainlng o~ tbe vane~
12, and at the bottom of this extension is a ~eries ~i draln pipes (as 16; only two are here shown) through which the water may be lead o~ and disposed o~. The box's rear extenslon 15 also has, ln its upper and side ~urfaces, a series o~ plugged ~lushing ports ~us 17) through which water, steam and so on may be forced ln to help clear the box o~ any solids (dirt or ~cale) lodged therein.
Claims (3)
1. A drain box for use in a gas turbine separator assembly wherein the drain box is mounted below a duct of the separator to receive vanes passing through an upper region of the drain box to contact the base thereof, and comprising a plurality of flushing ports which allow cleaning substances to be flushed through the drain box in order to remove particles of matter collected therein.
2. A drain box according to claim 1, wherein a chamber extends from the drain box, into which chamber liquid condensing on the vanes is channelled and collected.
3. A separator comprising a drain box according to claim 1 or 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB848431361A GB8431361D0 (en) | 1984-12-12 | 1984-12-12 | Drain box |
| GB84/31,361 | 1984-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1283059C true CA1283059C (en) | 1991-04-16 |
Family
ID=10571065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000497331A Expired - Fee Related CA1283059C (en) | 1984-12-12 | 1985-12-11 | Separator drain boxes |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0205525A1 (en) |
| CA (1) | CA1283059C (en) |
| GB (2) | GB8431361D0 (en) |
| WO (1) | WO1986003424A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4854950A (en) * | 1987-07-06 | 1989-08-08 | Peerless Manufacturing Company | Moisture separator |
| US5057129A (en) * | 1987-07-06 | 1991-10-15 | Peerless Manufacturing Company | Moisture separator |
| CA2822906C (en) * | 2011-01-05 | 2018-02-06 | Westinghouse Electric Company Llc | Demister vane in situ cleaning fixture |
| CN110496453B (en) * | 2019-08-06 | 2021-07-13 | 铜陵四通环境科技有限公司 | Doctor-bar is from leading drainage tail gas processing apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB846874A (en) * | 1955-12-09 | 1960-08-31 | Bristol Siddeley Engines Ltd | Improvements in or relating to separators for removing moisture from a moisture-laden stream of gas |
| US3036417A (en) * | 1959-03-06 | 1962-05-29 | Airfilpat Holdings Proprietary | Gas scrubbing and like operations |
| BE632967A (en) * | 1962-05-30 | |||
| GB1278675A (en) * | 1969-07-01 | 1972-06-21 | Ernest Cornell Hungate | Improved eliminator for removing particles of liquid from a gas stream |
| DE2132759B2 (en) * | 1971-07-01 | 1973-05-30 | L. & C. Steinmüller GmbH, 5270 Gummersbach | DEVICE FOR IMPROVING THE EQUIPMENT OF DROP SEPARATORS |
| FR2452955A1 (en) * | 1979-04-03 | 1980-10-31 | Nikolaevsky Korablestroitelny | Removal of liq. impurities in gas stream - using appts. contg. labyrinthine channels for coagulation of liq. into drops which are then collected in sump |
| DE3315100A1 (en) * | 1983-04-26 | 1984-10-31 | Ulrich Dr.-Ing. 5100 Aachen Regehr | DROP SEPARATOR |
-
1984
- 1984-12-12 GB GB848431361A patent/GB8431361D0/en active Pending
-
1985
- 1985-12-11 GB GB08530462A patent/GB2168264A/en not_active Withdrawn
- 1985-12-11 EP EP19860900194 patent/EP0205525A1/en not_active Withdrawn
- 1985-12-11 CA CA000497331A patent/CA1283059C/en not_active Expired - Fee Related
- 1985-12-11 WO PCT/GB1985/000570 patent/WO1986003424A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| GB8530462D0 (en) | 1986-01-22 |
| EP0205525A1 (en) | 1986-12-30 |
| GB8431361D0 (en) | 1985-01-23 |
| GB2168264A (en) | 1986-06-18 |
| WO1986003424A1 (en) | 1986-06-19 |
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| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |