CA1040183A - Valve with spring gate - Google Patents
Valve with spring gateInfo
- Publication number
- CA1040183A CA1040183A CA247,013A CA247013A CA1040183A CA 1040183 A CA1040183 A CA 1040183A CA 247013 A CA247013 A CA 247013A CA 1040183 A CA1040183 A CA 1040183A
- Authority
- CA
- Canada
- Prior art keywords
- springy
- valve
- region
- metal
- seating surface
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L11/00—Arrangements of valves or dampers after the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/052—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves
Abstract
ABSTRACT OF THE DISCLOSURE
A valve which has a gate of springy sheet material pressing at its peripheral region against an endless valve seat when the valve is in a closed position. The endless valve seat has a seating surface situated in a predeter-mined plane generally perpendicular to the direction of fluid flow through an opening defined by the endless valve seat. The gate of springy sheet material is of a dished configuration and has a hollow interior directed toward the opening defined by the endless valve seat when the valve is in a closed position.
The dished springy sheet material which forms the movable gate of the valve has a central region situated upstream of the plane in which the seating surface is located, when the valve is closed, and a springy endless peripheral region situated in the plane of the seating surface in engagement with the latter when the valve is closed. When the dished member which forms the gate is in an unstressed condition, its central region and the peripheral region are spaced from each other in the direction of fluid flow through a distance greater than the distance in the direction of fluid flow when the valve is closed so that the spring force of the springy dished member urges the peripheral region thereof against the seating surface when the valve is closed, a suitable structure being connected to the gate in order to move it between its closed and open positions.
A valve which has a gate of springy sheet material pressing at its peripheral region against an endless valve seat when the valve is in a closed position. The endless valve seat has a seating surface situated in a predeter-mined plane generally perpendicular to the direction of fluid flow through an opening defined by the endless valve seat. The gate of springy sheet material is of a dished configuration and has a hollow interior directed toward the opening defined by the endless valve seat when the valve is in a closed position.
The dished springy sheet material which forms the movable gate of the valve has a central region situated upstream of the plane in which the seating surface is located, when the valve is closed, and a springy endless peripheral region situated in the plane of the seating surface in engagement with the latter when the valve is closed. When the dished member which forms the gate is in an unstressed condition, its central region and the peripheral region are spaced from each other in the direction of fluid flow through a distance greater than the distance in the direction of fluid flow when the valve is closed so that the spring force of the springy dished member urges the peripheral region thereof against the seating surface when the valve is closed, a suitable structure being connected to the gate in order to move it between its closed and open positions.
Description
:~4~
sAcKGRou~D OF THE I~E~TION
The present invention relates to valves.
In particular, the present invention relates to fairly large valves having one inlet port and two outlet ports capable of controlling the flow of a ~luid such as a gas through relatively large ducts. For example, the pre-sent invention may be used in connection with turbines such as gas turbines in order to control the flow of the exhaust of a gas turbine either through a steam generator or to a bypass stack.
Although installations of the above type do not necessarily operate at very large pressures, they do operate at relatively high temperatures, and considerable problems are encountered in providing valves which can be effectively operated so as to reliably close ducts through which a gas flows. Such ducts may be, for example, of a rectangular con-figuration having a long dimension on the order of 12 feet and a transverse dimension of between 2 and 3 feet, for ex-ample, so that a relatively large amount of flue gas may be handled in such a duct. The temperatures which are encoun-tered in such installations may be on the order of 1000F.
With installations of the above general type con-siderable problems are encountered in controlling the flow of a fluid through the duct inasmuch as the closure must be maintained over a long distance and in view of the relatively high temperatures it is difficult to provide a reliable seal with the large temperature range which is encountered. If, for example, reliance is made upon relatively soft material to achieve the required seal, such a material requires fre-quent replacement as well as a complex method of attachment,such as the requirement of removing and replacing a large num~er of bolts. Moreover, conventional valves to serve purposes as set forth above have complex power-operated
sAcKGRou~D OF THE I~E~TION
The present invention relates to valves.
In particular, the present invention relates to fairly large valves having one inlet port and two outlet ports capable of controlling the flow of a ~luid such as a gas through relatively large ducts. For example, the pre-sent invention may be used in connection with turbines such as gas turbines in order to control the flow of the exhaust of a gas turbine either through a steam generator or to a bypass stack.
Although installations of the above type do not necessarily operate at very large pressures, they do operate at relatively high temperatures, and considerable problems are encountered in providing valves which can be effectively operated so as to reliably close ducts through which a gas flows. Such ducts may be, for example, of a rectangular con-figuration having a long dimension on the order of 12 feet and a transverse dimension of between 2 and 3 feet, for ex-ample, so that a relatively large amount of flue gas may be handled in such a duct. The temperatures which are encoun-tered in such installations may be on the order of 1000F.
With installations of the above general type con-siderable problems are encountered in controlling the flow of a fluid through the duct inasmuch as the closure must be maintained over a long distance and in view of the relatively high temperatures it is difficult to provide a reliable seal with the large temperature range which is encountered. If, for example, reliance is made upon relatively soft material to achieve the required seal, such a material requires fre-quent replacement as well as a complex method of attachment,such as the requirement of removing and replacing a large num~er of bolts. Moreover, conventional valves to serve purposes as set forth above have complex power-operated
- 2 ~
~ ~ 4~ ~ ~ 3 1 mechani~m~ for open~ng and closing the valves~ and these 2 mechan~sms for operating the va~e between ~ts sspen and
~ ~ 4~ ~ ~ 3 1 mechani~m~ for open~ng and closing the valves~ and these 2 mechan~sms for operating the va~e between ~ts sspen and
3 closed positions involve a f~rther disa~vanta~e in the struc~
4 ture.
~UMMA~Y OF THE l~VENTION
6 It ls acc~srd~ngly ~ primary cabjeet of the present 7 in~ention to prov~de a valve which will av~sid dx~awbacks a~
8 set forth ab~ve !
9 Thus, ~t is an ~bjeet of the present i~vention ~o provide a valve which is capable of achieving the requ~red 11 seal 6ver an extremely lc;ng end~less path w~thout using sof~
12 mater~al for sealing purposes so that all of the disadvan 13 tages ~nvolved in the use of such a 50ft material are eli~
14 minated.
Furthermore, it i5 an object of the present inven-16 tion to provide a v~lve of the above general type.which will 17 operate very rel~ably with a structure wh~ch is capable of 1:8 easily and effectively m~svir~g the va~e between its open 19 and <:losed p~Dsiticsns wlths~lut a large num~er of complicatic)ns 20 in the mechanism which displaces the valve between its open 21 and closed positions.
22 Furthermore/ it is an object of the present inven~
23 tion to provide a valve whieh is extremely safe in that at 24 no time does the val~e completely block the flow of fluido .25 Furthermore, it is an object of the present inven~
26 t~on to provide a valve of the ab~ve general type whieh even 27 though it is relatively large nevertheless is capable of be~
28 ing closed and opened rapidly as a result of the simple man~
29 ner in which the valve is ac~uated in accordance with the present inventicnO
31 Also, it is an ob;ect of the present invention to 32 pr~ide a valve of the ab~e general type which is simple in 4~ ~ ~ 3 1 it~ construct~n and of ~ gow cost w~lle at t~e same t~me 2 requiring minimum malntenance during a long operating life.
3 Acc~rding t~ the invention9 ~he valve comprises 4 a~ endless valve sea~ means whieh has an outer fastenlng region adapted to be fastened t~ the ~nner or outer ~urface 6 of a duct through which a fluid is ad~pted to fl~w, ~he 7 valve seat means havlr.g an inner se~t region situa~ed in~
8 wardly o~ its ~uter fastening regicn and tenm~nating ~n an 9 endless seating surface located ~n a predeterm~ned plane which is generally perpendicular to the direction of fluid 11 flow through the duct~ so that the seating surace define~
12 an cpening ~hrough which the fluid is adp~ted to flcw. A
13 valve closure means has a closed positlon engaging the ab~ve 14 seating surface and closing the opening de1ned thereby.
15 Thls val~e closure means includes a dished memDer of spr~ngy 16 shee~ material ha~lng a h~llow interior directed toward the 17 opening defined by the seating surface in t~e cl~sed pos~
18 tion of the closure means~ This dished sprlngy member has 19 a central region s~tuated upstream of the plane in whleh the seating surface is located and a springy endless peri 21 pheral region situated in the latter plane in engagement 22 with the seating surface when the clos~re mean~ is in its 23 closed positionO The springy endless peripheral region of 24 the dished member is situated, in the unstressed condition of the dished member, in a plane which is located at a gi~en 26 distance from the central region of the dished memberO A
27 moving means is oper~ ely connected to the dished memher 28 of the springy sheet material for moving the latter from an 29 open position displaced away from the above opening to a clo~sed position where the peripheral reg~on of the dished 31 member engages the seating æurface and is lo¢ated closer to 32 the central region of the dished member than the above - 4 ~
1 distance ln the ~nstr~ssed con~ition of the d~shed membé`rg 2 so that when the valve is closed the spr~ngy peripheral 3 region of the dished member presses against the seating sur-4 face.
. 5 BRIEF D SCRIPTION OF DRAWINGS
6 .The invention is illustr~ed, by way of example, 7 in the accompanying drawings which form part o:E this appli-8 cation ànd in which: . .
9 FIG. 1 is a fragmentary perspect~ve illustration of one em~odlment of a valve according to the present inven-11 tion with a body including internal thermal insulat~on;
12 FIG. 2 is a fragmentary sectional plan view taken 13 along line 202 of FIG. 1 showing in add~t~on parts of the 14 ducts which are provided with the valve struc~ure of the invention; . .
16 FIG. 3 is a partly broken away sectional elevation 17 of the valve of the invention taken along line 3~3 o FIG. 2;
18 FIG. 4 s~ows part of the strueture of FIG. 2 in 19 an enlarged scale, as compared to FIG. 2, ln order to illus-trate more clearly further detalls of the structure;
21 FIG. 5 is a fragmentary sectional elevation~ taken 22 along line 5~5 of FIG. 3 showing the structurc at an en- ;
23 larged scale, as compared to FIG. 3 w~th additional det~ils 24 bein~ illustrated in FIG. 5;
FIG. 6 is a fragmentary partly exploded perspective 26 illuæ~ration of a valve seat means of the invention;
27 ~IG. 7 is a fragmentary sectional elevation taken 2~ along line 7-7 o~ FIG. 6 in the direction of ~he arrows; and 29 FIG. 8 is a fragmentary sectional plan view ~aken 3Q along line 8~8 of FIG. 3 in the direction of the arrows and 31 showing the di~hed member edge limit~ng means of the valve 32 of the invention.
- S ~ ;
~ 8 3 1 DESCRIPTION OF PREFERRED EMBODIMENTS ..............
2 The valve of the invention includes 2n endless 3 valve seat means lO which is illustrated at the left of FIG.
4 1. This endless valve seat means lO has an outer fas.tening region 12 which is adapted to be ~astened to ~he inner sur-6 face of a duct through which a fluid is adapted to flow.
. .
: ~~~~: 7 Thus, FIG. 2 shGws in the particular ins~allation illustra~
., .. , _ ,._ 8 ted there~n a pair of valve seat means lO hav~ng their outer 9 fastenlng regions 12 fastened in any sui~able way to the in-ner surace of a pair of ducts 94 and 16 whieh are intercon-11 ne~ted at a corner region 18. As is apparent from FIG. 2S
12 the inner surfaces.of the ducts 149 16 and corner 18 are 13 lined wi~h a suitable thenmal insulation 20 which may be of 14 the refractory type. The valve seat means 10 has an outer flange 22 fixed directly to the inner surface of the wall 16 of each duct 14 and 16 by suitable bolts, welding, or the 17 like. This flange 22 is fixed with a web 24 whlch is per-18 pendicular to ~he flange 22, so that this part of the struc~
19 ture forms an elongated T~bar structure. The inner peripher-al edge region of the rectangul~r T~bar structure 22, 24 has 21 fixed thereto9 as by welding, for example, an elongated 22 endless web 26 which extends perpendicularly from the web 23 24 and term~nates in what may be considered an endless seat-24 ing surface 28. The configuration of the endless seating surface 28 is clearly apparent from FI&~ 1 where it is 26 indicated that the web 26 has rounded eorners.
27 The construction of the valve seat means 10 is 28 most clearly apparent frcm FIGS. 4~7. As has been indi-29. cated above, the val.ve of the invention is adapted to oper-ate at temperatures which are on the order of 1000F. For 31 example, the valve of the invention may operate at a tem-32 pe~aeura range in ~ specific installation of from ambien~
6 ~
1 all the-way up ~o 1200F. Thu3, allowance must be made for 2 expansion and contraction, particularly in vlew of.the l~rge 3 dirnens~ons, wh~ch, as has been ~ndicated abcve, may be on 4 the order of a height of 12 feet and a width of betwee~ . 2
~UMMA~Y OF THE l~VENTION
6 It ls acc~srd~ngly ~ primary cabjeet of the present 7 in~ention to prov~de a valve which will av~sid dx~awbacks a~
8 set forth ab~ve !
9 Thus, ~t is an ~bjeet of the present i~vention ~o provide a valve which is capable of achieving the requ~red 11 seal 6ver an extremely lc;ng end~less path w~thout using sof~
12 mater~al for sealing purposes so that all of the disadvan 13 tages ~nvolved in the use of such a 50ft material are eli~
14 minated.
Furthermore, it i5 an object of the present inven-16 tion to provide a v~lve of the above general type.which will 17 operate very rel~ably with a structure wh~ch is capable of 1:8 easily and effectively m~svir~g the va~e between its open 19 and <:losed p~Dsiticsns wlths~lut a large num~er of complicatic)ns 20 in the mechanism which displaces the valve between its open 21 and closed positions.
22 Furthermore/ it is an object of the present inven~
23 tion to provide a valve whieh is extremely safe in that at 24 no time does the val~e completely block the flow of fluido .25 Furthermore, it is an object of the present inven~
26 t~on to provide a valve of the ab~ve general type whieh even 27 though it is relatively large nevertheless is capable of be~
28 ing closed and opened rapidly as a result of the simple man~
29 ner in which the valve is ac~uated in accordance with the present inventicnO
31 Also, it is an ob;ect of the present invention to 32 pr~ide a valve of the ab~e general type which is simple in 4~ ~ ~ 3 1 it~ construct~n and of ~ gow cost w~lle at t~e same t~me 2 requiring minimum malntenance during a long operating life.
3 Acc~rding t~ the invention9 ~he valve comprises 4 a~ endless valve sea~ means whieh has an outer fastenlng region adapted to be fastened t~ the ~nner or outer ~urface 6 of a duct through which a fluid is ad~pted to fl~w, ~he 7 valve seat means havlr.g an inner se~t region situa~ed in~
8 wardly o~ its ~uter fastening regicn and tenm~nating ~n an 9 endless seating surface located ~n a predeterm~ned plane which is generally perpendicular to the direction of fluid 11 flow through the duct~ so that the seating surace define~
12 an cpening ~hrough which the fluid is adp~ted to flcw. A
13 valve closure means has a closed positlon engaging the ab~ve 14 seating surface and closing the opening de1ned thereby.
15 Thls val~e closure means includes a dished memDer of spr~ngy 16 shee~ material ha~lng a h~llow interior directed toward the 17 opening defined by the seating surface in t~e cl~sed pos~
18 tion of the closure means~ This dished sprlngy member has 19 a central region s~tuated upstream of the plane in whleh the seating surface is located and a springy endless peri 21 pheral region situated in the latter plane in engagement 22 with the seating surface when the clos~re mean~ is in its 23 closed positionO The springy endless peripheral region of 24 the dished member is situated, in the unstressed condition of the dished member, in a plane which is located at a gi~en 26 distance from the central region of the dished memberO A
27 moving means is oper~ ely connected to the dished memher 28 of the springy sheet material for moving the latter from an 29 open position displaced away from the above opening to a clo~sed position where the peripheral reg~on of the dished 31 member engages the seating æurface and is lo¢ated closer to 32 the central region of the dished member than the above - 4 ~
1 distance ln the ~nstr~ssed con~ition of the d~shed membé`rg 2 so that when the valve is closed the spr~ngy peripheral 3 region of the dished member presses against the seating sur-4 face.
. 5 BRIEF D SCRIPTION OF DRAWINGS
6 .The invention is illustr~ed, by way of example, 7 in the accompanying drawings which form part o:E this appli-8 cation ànd in which: . .
9 FIG. 1 is a fragmentary perspect~ve illustration of one em~odlment of a valve according to the present inven-11 tion with a body including internal thermal insulat~on;
12 FIG. 2 is a fragmentary sectional plan view taken 13 along line 202 of FIG. 1 showing in add~t~on parts of the 14 ducts which are provided with the valve struc~ure of the invention; . .
16 FIG. 3 is a partly broken away sectional elevation 17 of the valve of the invention taken along line 3~3 o FIG. 2;
18 FIG. 4 s~ows part of the strueture of FIG. 2 in 19 an enlarged scale, as compared to FIG. 2, ln order to illus-trate more clearly further detalls of the structure;
21 FIG. 5 is a fragmentary sectional elevation~ taken 22 along line 5~5 of FIG. 3 showing the structurc at an en- ;
23 larged scale, as compared to FIG. 3 w~th additional det~ils 24 bein~ illustrated in FIG. 5;
FIG. 6 is a fragmentary partly exploded perspective 26 illuæ~ration of a valve seat means of the invention;
27 ~IG. 7 is a fragmentary sectional elevation taken 2~ along line 7-7 o~ FIG. 6 in the direction of ~he arrows; and 29 FIG. 8 is a fragmentary sectional plan view ~aken 3Q along line 8~8 of FIG. 3 in the direction of the arrows and 31 showing the di~hed member edge limit~ng means of the valve 32 of the invention.
- S ~ ;
~ 8 3 1 DESCRIPTION OF PREFERRED EMBODIMENTS ..............
2 The valve of the invention includes 2n endless 3 valve seat means lO which is illustrated at the left of FIG.
4 1. This endless valve seat means lO has an outer fas.tening region 12 which is adapted to be ~astened to ~he inner sur-6 face of a duct through which a fluid is adapted to flow.
. .
: ~~~~: 7 Thus, FIG. 2 shGws in the particular ins~allation illustra~
., .. , _ ,._ 8 ted there~n a pair of valve seat means lO hav~ng their outer 9 fastenlng regions 12 fastened in any sui~able way to the in-ner surace of a pair of ducts 94 and 16 whieh are intercon-11 ne~ted at a corner region 18. As is apparent from FIG. 2S
12 the inner surfaces.of the ducts 149 16 and corner 18 are 13 lined wi~h a suitable thenmal insulation 20 which may be of 14 the refractory type. The valve seat means 10 has an outer flange 22 fixed directly to the inner surface of the wall 16 of each duct 14 and 16 by suitable bolts, welding, or the 17 like. This flange 22 is fixed with a web 24 whlch is per-18 pendicular to ~he flange 22, so that this part of the struc~
19 ture forms an elongated T~bar structure. The inner peripher-al edge region of the rectangul~r T~bar structure 22, 24 has 21 fixed thereto9 as by welding, for example, an elongated 22 endless web 26 which extends perpendicularly from the web 23 24 and term~nates in what may be considered an endless seat-24 ing surface 28. The configuration of the endless seating surface 28 is clearly apparent from FI&~ 1 where it is 26 indicated that the web 26 has rounded eorners.
27 The construction of the valve seat means 10 is 28 most clearly apparent frcm FIGS. 4~7. As has been indi-29. cated above, the val.ve of the invention is adapted to oper-ate at temperatures which are on the order of 1000F. For 31 example, the valve of the invention may operate at a tem-32 pe~aeura range in ~ specific installation of from ambien~
6 ~
1 all the-way up ~o 1200F. Thu3, allowance must be made for 2 expansion and contraction, particularly in vlew of.the l~rge 3 dirnens~ons, wh~ch, as has been ~ndicated abcve, may be on 4 the order of a height of 12 feet and a width of betwee~ . 2
5 and 3 feet or even grea~erO In the illustrated internal
6 lnsulated valve example in order to compensate for differ-~~~~ 7 ential thermal expansion be~ween the relatiYely cool outsi~e 8 walls of the valve body and ducts and ~he hot valve seat, 9 the web~ 24 and 26 are formed with a series of slits 3~
distribu~ed therealong, as indicated most clearly in FIG. 6 11 and FIG. 7. These slits 30 are in turn eovered by a flexi-12 ble sheet mater~al 32. Thus, the sheet materlal 32 may eake 13 $he form of any suitable metal foil in the form of a thin 14 flexible sheet material which is welded to the webs 24 and 26, bridging the slits 30 thereof, in the manner shown most 16 clearly in FIGS. 6 and 7. At this port~on which is situated 17 in line with a ~lit 30, each cover element 32 has a bulging 18 region 34 capable of y~elding during expansion and resuming 19 a more prcnounced bulge configuration during contraction, so ~hat in this way while a se~l is maintained at the slits 30`
21 nevertheless th~ structure is capable of expanding and con-22 t~acting due tc temperature fluctuat~ons.
23 Those skilled in the art will readily appreciate 24 that if it is desirable or necessary to locate the thermal insulation on the exterior of the valve and duct, very li~tle 26 temperature difference will be present between the valve 27 body and seatJand the need for slits 3Q and covers 32 will 28 be eliminated~
29 , Thus, it wlll be seen that the seating surface 28 .
~ each o the valve means 10 illustrated in FIG. 2 is lo-31 cated generally in a plane which is perpendicular to the 32 direction of fluid flow. In the particular example -- 7 _ ~llu~trated in ~IÇ:. 2, the duct 14- may b~ a duct. :l~or lead 2 ing exhaus~ ~a~; from a gas turbine to a boller, while the 3 duct 16 may be a duct for leading the exhaust gas from .the 4 turbine to vent through a suitab~e s~ack. Thus it wiLl be 5 seen that the endless seating surface 28 of each valve means 6 10 defines an opening through which the fluid is adapted to
distribu~ed therealong, as indicated most clearly in FIG. 6 11 and FIG. 7. These slits 30 are in turn eovered by a flexi-12 ble sheet mater~al 32. Thus, the sheet materlal 32 may eake 13 $he form of any suitable metal foil in the form of a thin 14 flexible sheet material which is welded to the webs 24 and 26, bridging the slits 30 thereof, in the manner shown most 16 clearly in FIGS. 6 and 7. At this port~on which is situated 17 in line with a ~lit 30, each cover element 32 has a bulging 18 region 34 capable of y~elding during expansion and resuming 19 a more prcnounced bulge configuration during contraction, so ~hat in this way while a se~l is maintained at the slits 30`
21 nevertheless th~ structure is capable of expanding and con-22 t~acting due tc temperature fluctuat~ons.
23 Those skilled in the art will readily appreciate 24 that if it is desirable or necessary to locate the thermal insulation on the exterior of the valve and duct, very li~tle 26 temperature difference will be present between the valve 27 body and seatJand the need for slits 3Q and covers 32 will 28 be eliminated~
29 , Thus, it wlll be seen that the seating surface 28 .
~ each o the valve means 10 illustrated in FIG. 2 is lo-31 cated generally in a plane which is perpendicular to the 32 direction of fluid flow. In the particular example -- 7 _ ~llu~trated in ~IÇ:. 2, the duct 14- may b~ a duct. :l~or lead 2 ing exhaus~ ~a~; from a gas turbine to a boller, while the 3 duct 16 may be a duct for leading the exhaust gas from .the 4 turbine to vent through a suitab~e s~ack. Thus it wiLl be 5 seen that the endless seating surface 28 of each valve means 6 10 defines an opening through which the fluid is adapted to
7 :f~13w .
8 A valve closure means 36 is pr~vided to cooperate
9 with each valve seat means 10 at the seating surface 28 thereof. Thus, in the par~icular example illustrated in 11 FIG. 2 there are a pair of valve closure means 36 for r.e-12 spectlvely cooperating with the pair of va~ve seat means 10.
13 The pair of valve closure means 36 are carried by a suita~le 14 door frame 38 farm~ng part of a m~ving means 40 which in~ .
cludes a hollow rotary shaft 42 which fixedly carries the 16 frame 38 in a manner described in greater detail below.
17 Each valve closure means 36 includes a dished 18 springy member 44 made of a springy sheet metal and having`
19 a springy endless peripheral region 46 which cooperates with the seating sur~ace 28. The peripheral regicn 46 may be in-21 tegral with and form part of the rema~nder of the springy 22 dished member 44 or it may be in the form ~f a separate 23 strip fas~ened as by welding along the edge of the body of 24 sheet metal which forms the remainder of the springy dished member 46. The closure means 36 which cooperates with the 26 ~eat means 10 fixed to the duct 14 is shown in its closed 27 position in FIG~ 2, from which it is apparent that in the 28 closed position o~ the valve the hollow inter~or o~ the 29 dished member 44 is situated ups~ream of the opening defined by the surface 28. Inwardly of its peripheral region 46 the 31 dished member 44 has a central region 48. The central re-32 gion 48 is s~tuated from the plane of the peripheral reg~on ~ 3 1 46 by a distance, whe~ the closure mean~ 36 is not stre~sed, 2 greater than this distance when the closure means.36 is in 3 its closed position9 so tha~ in ~his way the periphexa~.~e~
4 gion 46 presses with the springy force of the springy sheet material against ~he seating surface 28 so as ~o provide a 6 reliable tight closure. Of course the peripheral region 46 _ _ 7 conforms to the ccnfiguration of the endless seating surface 8 28 and is situated ~n a plane perpend~cular to the plane of 9 the web 26 press~ng against the s~rface 28 when the closure means 36 is in its clo~ed positlon.
11 The frame 38 includes a plurality of frame u~its 12 50 pro~ec~ing radia~ly from the hollow rotary shaft 42 and 13 having fixed to the lat~er end strlp members 52 of an arcu;
14 ate configuration~ These members 52 may be welded or other-wise fastened to the hollow shaft 42 while the radially ex-16 tending frame units 50 may be made up of suitably shaped 17 bars which may be welded together, for example~
18 The several frame unlts 50 which are distrib~ed .
19 along the shat 42 ~n the manner shown most olearly in FIG.
20 ;3 are lnterconnected by a pair of vertically disposed elong-21 ated strips 54 and 56 which extend between and are welded 22 to the ~rame units 50 in the manner shown most clearly in 23 FIG. 3. The pair of sprlngy dished members 44 of the pair 24 of closure means 36 are bolted directly to these rectangular frame works as by a series of bolts 60 some of which are 26 indicated in FIG. 1.
27 However, ~etween each springy dished member 44 ~8 an~ the fra~e 38 there is a back~up sheet member 62 situ-: 29 ated behind the en~ire dished member 44, although in the illustrated example the portions of corner regions of the 31 back~up sheet member 62 are broken away for purposes of 32 clarity.
_ 9 _ 4~ ~ ~ 3 1 Behind.the .perlpheral ~ealing reg~on 46.~f...the 2 springy dished member 44 the b~k~up sheet me~ber 62 carries 3 a plural~ty of l~m~in~s project~Gns 64 which are ~n.llne 4 with the sealing surface 28 when the closure means ~6...is..in a olosed position. Thus, it will be seen tha~ the deflec-6 t~on or stressing of the springy dished member 44 at i~
7 per~heral region 46 can take place only until the l~miting 8 means 64 ccmes into engagement with the per~pheral regio~
9 46, so that wi~h this construction after deflection Q_the springy gate has taken place through a given extent the 11 limiting means 64 will limit-further deflection ~nd will 12 posit~vely press the peripheral region ~6 against the sur.
13 face 280 14 A second lim~tlng means is provided to limi~ the movement of the peripheral region 46 in the opposite direc~
16 tion away from the back~up sheet 62. Thus, as may be ~een 17 from FIG. 8 the sheet 44 is provided lnwardly of but adja-18 cent the peripheral region 46 with a series of openings 66.
i9 The shànks 68 of a plurality o~ bolts 70 extend through the o~enings 66, these bolts 68 fastened to the back-up sheet 21 62 in the manner shcwn in FIG. 87 The bolts 70 have heads 22 72 larger than the openings 660 Thus, with t~is arrangement 23 if due to thermal stressing or the like there should be any 24 tendency for the peripheral region 46 to become undesirably warped and ~o move undesirably away from the back~up sheet 26 62, the limiting means formed by the bolts 70 will limit the 27 extent of such deformation of the springy gate 44. Thus, 28 wi~h this arrangement, the edge 46 of the sheet 44 will 29 ~beoome situated against the inner surface of the web 26, and a reliable operation of the valve is assured under.even the 31 most extreme operating conditions. The limiting function of 32 bolt head 72 is also effective to preven~ any a~verse outward , , .. .. . ~ . ...
l deflections of the edge 46 tha~t ~s not in seating engage-2 ment with an edge 28 and therefore subject ~o the direct 3 high veloclty gas flows in the duc~.
4 As was indicated above, the moving means 40 in-S cludes the elongated hollow shaft 429 the axis of which 6 defines the axis around which the closure means turns 7 be~ween i~s alternate closed positions in the ductwork.
8 The elongated hollow shaft 42 fixedly carries at i~s 9 bottom end a plug 74 (FIG. 3) which ~as a downwardly direct-ed convex spherical surface 76 received in a correspondingly 11 shaped concave surface of a block 78 supporred in a suitable 12 frame 80, so that as a result of this si~ple cons~ruction 13 the entire we~ght and moments of the assembly is carried 14 by the block 78 while at the same time the sha~t 42 can ~reely turn around its axis.
16 At its top end the shaft 42 carries a fur~her 17 plug 82 which is fixed in any suitable way to the shaft 42 18 and which has an exposed nnn circular portion 84 of square 19 cross section, for example, adapted to be fixed with a lever 86 which provides the turn~ng of the shaft 42 about it~
2~ axis ~ The shaft 42 ~s supported at its upper end in a 22 suitable bearing 88 carrled by the structure which inter-23 connects the ducts 14 and 16. The lever 86 may be opera-24 tively connected.with any suitable actuat~ng meehanism such as a hydraulic actua~ing mechanism 90 shown schematically 26 in FIG. 1 or even more preferably through a rack and pinion 27 gear fittedito the top end of shaft 42 in place of the 28 levers 86.
29 . While in the embodiment of the invention shown the skat 42 is primarily intended ~o be orien~ed in a ver-31 tical posit~on, those skilled in the art will readily appre-32 ciate many alternate bearing arrangements for rotatably ;: - 1~ -.~ . .
support~ng this shaft in dl~ferent pos~t~cDns. For in5tance7 2 ~f desired the lower end of 6haft 42 c:ould be extended to 3 outside ~he duct wlth pr~isi~n made for a further rack and 4 p~nion to opera~ce 'che valve if addit~onal driYing torque . 5 for proper seating was necessary.
6 Thus, with the aboye extremely simple rugged .. ...
7 structure it is possible to rapidly swing each closure 36 8 between its closed and open pls~lt~cnsg and furthermore when 9 one of the ducts 14 is closed the other duct 16 is necessar-ily open9 so th~t at no t~me is the exhaust completely 11 blocked, achieving in this way a safe operBtion for ~he l2 arrangement of the nvention. If desired9 the valve eould 13 also be positioned midway between the seats to allow fluid 14 ~low thr~ssugh both outlet dur.ts.
In additlon, it will be n~ed that the sides of ~6 the pair of valve closure means 36 which are distant from 17 t~e shaft 42 are closer to each other than their sides which 18 are situated adjacent to the shaft 42. This ~nclined ar 19 rangement of the patr of closure means 3S ~s part1cularly apparent from FIGS. 3 and 4. Thus9 ~t will be seen that 21 ~he radial1y extend~ng units 50 of the rame 38 termina~e 22 in elon~ated po~tions which converge toward each other so 23 that the pair of valve closures 36 are mounted with respect 24 to each other in the converging manner shown in FIGS. 2 and 4. Furthermore~ it will be seen that when the moving means 26 40 is actuated to close one of the valve ports and open.the 27 other valve port, the shaft 42 is turned through an angle 28 which is somewhat greater than 90. As a result of thi~
29 arrangement it becomes possible to reliably situate each valve closure means 36 properly seated ag~inst a seating 31 ~ur~ace 28.
32 As is apparent from the above descriptl~n, with ~ 12 -9 6~ 3 t each va~ve d~closed above, ~he ~ate a~ts in a m~nner simi~
2 lar to a door seating ~ainst a jambO The seating surface 3 28, which corresp~nds to the ~am~, is accurately fabrica~ed 4 and ~hermally stable so as to insure contact with the springy peripheral region of the springy swingable gate 6 along the en~ire periphery thereofO The ducts are t&er-7 malry insulated at ~heir internal surface to reduce the 8 metal temperature of the duc~o Of ~ourse, when the spr~ngy 9 peripheral reg~on of the ga~e engages the seating surface 0 the ga~e is elastically deflec~ed, and the spr~ngy structure 11 is cap~le of compensating for v~riation~ ~n the f~xed seat 12 height by deflect~on of the springy perlpheral region of 13 the gateO The torque wh~ch is applied through the rotary 14 shaft of the mov~ng meanq is s~ffi~lent to deflect the lS springy sheet mater~al with~n the elastic l~mit of the 16 springy metalO Usually the seating f~rce required for 17 metal~to~me~al seating will be`2~6 tlmes tha~ force which 18 would be developed by the differentlal pressure acting on 19 the springy gate when ~n contact with the seating surface ~ i8 by the f1uid ~n the duct system~ The springy dished ~1 membcr 44 ~s normally arranged so that the force du~ to 22 dlf~erential pressure acting thereon by the fluid in the 23 duct is ~n the same d~rec~ion as the externally appl~ed 24 seating ~orce.
. This metal~to~metal seating prcvides an extremely ~6 du~able valve structure, as contrasted with softseating 27 arrangements which require frequent replacement and complex 28 methods o~ attachment~
~9 Moreover, AS was poin~ed out above, the spring type o~ valve structure compensates for slight fixed~seat 31 dis~ortion due to temperature ~luctuat~ons which may exist 3~ particu~arly when the valve is closed. Furthermore, the ' ~imple rotary movemen betweerl ~nly slightly ms11re than 90 as described above in order to clc~se one valve and open 3 the ~ther lends itse~f to a s~mple rack and pinion o~ ether 4 operating me~hanism, as described ab~ve9 thus enabling a fas~
5 closure or opening rate to be achie~ed through this simple 6 valve actuation O Thus 9 the structure of the inven~ion is low ~~~ 7 in cost and simple in its construction, requiring min~mum 8 maf2ltenance wh~le st the same t~me being extremely sa~e 9 because at all times at least one of the d~ets described
13 The pair of valve closure means 36 are carried by a suita~le 14 door frame 38 farm~ng part of a m~ving means 40 which in~ .
cludes a hollow rotary shaft 42 which fixedly carries the 16 frame 38 in a manner described in greater detail below.
17 Each valve closure means 36 includes a dished 18 springy member 44 made of a springy sheet metal and having`
19 a springy endless peripheral region 46 which cooperates with the seating sur~ace 28. The peripheral regicn 46 may be in-21 tegral with and form part of the rema~nder of the springy 22 dished member 44 or it may be in the form ~f a separate 23 strip fas~ened as by welding along the edge of the body of 24 sheet metal which forms the remainder of the springy dished member 46. The closure means 36 which cooperates with the 26 ~eat means 10 fixed to the duct 14 is shown in its closed 27 position in FIG~ 2, from which it is apparent that in the 28 closed position o~ the valve the hollow inter~or o~ the 29 dished member 44 is situated ups~ream of the opening defined by the surface 28. Inwardly of its peripheral region 46 the 31 dished member 44 has a central region 48. The central re-32 gion 48 is s~tuated from the plane of the peripheral reg~on ~ 3 1 46 by a distance, whe~ the closure mean~ 36 is not stre~sed, 2 greater than this distance when the closure means.36 is in 3 its closed position9 so tha~ in ~his way the periphexa~.~e~
4 gion 46 presses with the springy force of the springy sheet material against ~he seating surface 28 so as ~o provide a 6 reliable tight closure. Of course the peripheral region 46 _ _ 7 conforms to the ccnfiguration of the endless seating surface 8 28 and is situated ~n a plane perpend~cular to the plane of 9 the web 26 press~ng against the s~rface 28 when the closure means 36 is in its clo~ed positlon.
11 The frame 38 includes a plurality of frame u~its 12 50 pro~ec~ing radia~ly from the hollow rotary shaft 42 and 13 having fixed to the lat~er end strlp members 52 of an arcu;
14 ate configuration~ These members 52 may be welded or other-wise fastened to the hollow shaft 42 while the radially ex-16 tending frame units 50 may be made up of suitably shaped 17 bars which may be welded together, for example~
18 The several frame unlts 50 which are distrib~ed .
19 along the shat 42 ~n the manner shown most olearly in FIG.
20 ;3 are lnterconnected by a pair of vertically disposed elong-21 ated strips 54 and 56 which extend between and are welded 22 to the ~rame units 50 in the manner shown most clearly in 23 FIG. 3. The pair of sprlngy dished members 44 of the pair 24 of closure means 36 are bolted directly to these rectangular frame works as by a series of bolts 60 some of which are 26 indicated in FIG. 1.
27 However, ~etween each springy dished member 44 ~8 an~ the fra~e 38 there is a back~up sheet member 62 situ-: 29 ated behind the en~ire dished member 44, although in the illustrated example the portions of corner regions of the 31 back~up sheet member 62 are broken away for purposes of 32 clarity.
_ 9 _ 4~ ~ ~ 3 1 Behind.the .perlpheral ~ealing reg~on 46.~f...the 2 springy dished member 44 the b~k~up sheet me~ber 62 carries 3 a plural~ty of l~m~in~s project~Gns 64 which are ~n.llne 4 with the sealing surface 28 when the closure means ~6...is..in a olosed position. Thus, it will be seen tha~ the deflec-6 t~on or stressing of the springy dished member 44 at i~
7 per~heral region 46 can take place only until the l~miting 8 means 64 ccmes into engagement with the per~pheral regio~
9 46, so that wi~h this construction after deflection Q_the springy gate has taken place through a given extent the 11 limiting means 64 will limit-further deflection ~nd will 12 posit~vely press the peripheral region ~6 against the sur.
13 face 280 14 A second lim~tlng means is provided to limi~ the movement of the peripheral region 46 in the opposite direc~
16 tion away from the back~up sheet 62. Thus, as may be ~een 17 from FIG. 8 the sheet 44 is provided lnwardly of but adja-18 cent the peripheral region 46 with a series of openings 66.
i9 The shànks 68 of a plurality o~ bolts 70 extend through the o~enings 66, these bolts 68 fastened to the back-up sheet 21 62 in the manner shcwn in FIG. 87 The bolts 70 have heads 22 72 larger than the openings 660 Thus, with t~is arrangement 23 if due to thermal stressing or the like there should be any 24 tendency for the peripheral region 46 to become undesirably warped and ~o move undesirably away from the back~up sheet 26 62, the limiting means formed by the bolts 70 will limit the 27 extent of such deformation of the springy gate 44. Thus, 28 wi~h this arrangement, the edge 46 of the sheet 44 will 29 ~beoome situated against the inner surface of the web 26, and a reliable operation of the valve is assured under.even the 31 most extreme operating conditions. The limiting function of 32 bolt head 72 is also effective to preven~ any a~verse outward , , .. .. . ~ . ...
l deflections of the edge 46 tha~t ~s not in seating engage-2 ment with an edge 28 and therefore subject ~o the direct 3 high veloclty gas flows in the duc~.
4 As was indicated above, the moving means 40 in-S cludes the elongated hollow shaft 429 the axis of which 6 defines the axis around which the closure means turns 7 be~ween i~s alternate closed positions in the ductwork.
8 The elongated hollow shaft 42 fixedly carries at i~s 9 bottom end a plug 74 (FIG. 3) which ~as a downwardly direct-ed convex spherical surface 76 received in a correspondingly 11 shaped concave surface of a block 78 supporred in a suitable 12 frame 80, so that as a result of this si~ple cons~ruction 13 the entire we~ght and moments of the assembly is carried 14 by the block 78 while at the same time the sha~t 42 can ~reely turn around its axis.
16 At its top end the shaft 42 carries a fur~her 17 plug 82 which is fixed in any suitable way to the shaft 42 18 and which has an exposed nnn circular portion 84 of square 19 cross section, for example, adapted to be fixed with a lever 86 which provides the turn~ng of the shaft 42 about it~
2~ axis ~ The shaft 42 ~s supported at its upper end in a 22 suitable bearing 88 carrled by the structure which inter-23 connects the ducts 14 and 16. The lever 86 may be opera-24 tively connected.with any suitable actuat~ng meehanism such as a hydraulic actua~ing mechanism 90 shown schematically 26 in FIG. 1 or even more preferably through a rack and pinion 27 gear fittedito the top end of shaft 42 in place of the 28 levers 86.
29 . While in the embodiment of the invention shown the skat 42 is primarily intended ~o be orien~ed in a ver-31 tical posit~on, those skilled in the art will readily appre-32 ciate many alternate bearing arrangements for rotatably ;: - 1~ -.~ . .
support~ng this shaft in dl~ferent pos~t~cDns. For in5tance7 2 ~f desired the lower end of 6haft 42 c:ould be extended to 3 outside ~he duct wlth pr~isi~n made for a further rack and 4 p~nion to opera~ce 'che valve if addit~onal driYing torque . 5 for proper seating was necessary.
6 Thus, with the aboye extremely simple rugged .. ...
7 structure it is possible to rapidly swing each closure 36 8 between its closed and open pls~lt~cnsg and furthermore when 9 one of the ducts 14 is closed the other duct 16 is necessar-ily open9 so th~t at no t~me is the exhaust completely 11 blocked, achieving in this way a safe operBtion for ~he l2 arrangement of the nvention. If desired9 the valve eould 13 also be positioned midway between the seats to allow fluid 14 ~low thr~ssugh both outlet dur.ts.
In additlon, it will be n~ed that the sides of ~6 the pair of valve closure means 36 which are distant from 17 t~e shaft 42 are closer to each other than their sides which 18 are situated adjacent to the shaft 42. This ~nclined ar 19 rangement of the patr of closure means 3S ~s part1cularly apparent from FIGS. 3 and 4. Thus9 ~t will be seen that 21 ~he radial1y extend~ng units 50 of the rame 38 termina~e 22 in elon~ated po~tions which converge toward each other so 23 that the pair of valve closures 36 are mounted with respect 24 to each other in the converging manner shown in FIGS. 2 and 4. Furthermore~ it will be seen that when the moving means 26 40 is actuated to close one of the valve ports and open.the 27 other valve port, the shaft 42 is turned through an angle 28 which is somewhat greater than 90. As a result of thi~
29 arrangement it becomes possible to reliably situate each valve closure means 36 properly seated ag~inst a seating 31 ~ur~ace 28.
32 As is apparent from the above descriptl~n, with ~ 12 -9 6~ 3 t each va~ve d~closed above, ~he ~ate a~ts in a m~nner simi~
2 lar to a door seating ~ainst a jambO The seating surface 3 28, which corresp~nds to the ~am~, is accurately fabrica~ed 4 and ~hermally stable so as to insure contact with the springy peripheral region of the springy swingable gate 6 along the en~ire periphery thereofO The ducts are t&er-7 malry insulated at ~heir internal surface to reduce the 8 metal temperature of the duc~o Of ~ourse, when the spr~ngy 9 peripheral reg~on of the ga~e engages the seating surface 0 the ga~e is elastically deflec~ed, and the spr~ngy structure 11 is cap~le of compensating for v~riation~ ~n the f~xed seat 12 height by deflect~on of the springy perlpheral region of 13 the gateO The torque wh~ch is applied through the rotary 14 shaft of the mov~ng meanq is s~ffi~lent to deflect the lS springy sheet mater~al with~n the elastic l~mit of the 16 springy metalO Usually the seating f~rce required for 17 metal~to~me~al seating will be`2~6 tlmes tha~ force which 18 would be developed by the differentlal pressure acting on 19 the springy gate when ~n contact with the seating surface ~ i8 by the f1uid ~n the duct system~ The springy dished ~1 membcr 44 ~s normally arranged so that the force du~ to 22 dlf~erential pressure acting thereon by the fluid in the 23 duct is ~n the same d~rec~ion as the externally appl~ed 24 seating ~orce.
. This metal~to~metal seating prcvides an extremely ~6 du~able valve structure, as contrasted with softseating 27 arrangements which require frequent replacement and complex 28 methods o~ attachment~
~9 Moreover, AS was poin~ed out above, the spring type o~ valve structure compensates for slight fixed~seat 31 dis~ortion due to temperature ~luctuat~ons which may exist 3~ particu~arly when the valve is closed. Furthermore, the ' ~imple rotary movemen betweerl ~nly slightly ms11re than 90 as described above in order to clc~se one valve and open 3 the ~ther lends itse~f to a s~mple rack and pinion o~ ether 4 operating me~hanism, as described ab~ve9 thus enabling a fas~
5 closure or opening rate to be achie~ed through this simple 6 valve actuation O Thus 9 the structure of the inven~ion is low ~~~ 7 in cost and simple in its construction, requiring min~mum 8 maf2ltenance wh~le st the same t~me being extremely sa~e 9 because at all times at least one of the d~ets described
10 ab~g~e is open.
: ~ 14
: ~ 14
Claims (13)
1. A valve for use in high temperature service comprising:
endless valve seat means having an outer fastening region fasten-ed to the surface of a duct through which a fluid is adapted to flow and an inner seat region situated inwardly of said outer fastening region and terminating in an endless rigid metal seat-ing surface located in a predetermined plane generally perpendicu-lar to the direction of fluid flow through the duct, so that said seating surface defines an opening through which the fluid is adapted to flow, valve closure means having an open position and a closed position engaging said seating surface and closing said opening defined thereby, said valve closure means including a dished member of springy sheet material having a hollow interior directed toward said opening defined by said seating surface in the closed position of said closure means, said dished springy member having a central region situated upstream of said plane and a springy endless metal peripheral region situated in said plane in engagement with said metal seating surface when said closure means is in said closed position thereof thereby forming a metal-to-metal seating relationship, said springy endless metal peripheral region being situated, in the unstressed condition of said springy sheet material and open position of said dished member, in a plane located at a given distance from the central region of said dished member, and moving means including a mov-able frame means operatively rigidly connected to said central region of said dished member of springy sheet material for mov-ing the latter about a turning axis from said open position dis-placed away from said opening to said closed position where said metal peripheral region engages said metal seating surface and is located closer to said central region than said given distance so that said springy metal peripheral region presses against said metal seating surface in the closed position of said closure means.
endless valve seat means having an outer fastening region fasten-ed to the surface of a duct through which a fluid is adapted to flow and an inner seat region situated inwardly of said outer fastening region and terminating in an endless rigid metal seat-ing surface located in a predetermined plane generally perpendicu-lar to the direction of fluid flow through the duct, so that said seating surface defines an opening through which the fluid is adapted to flow, valve closure means having an open position and a closed position engaging said seating surface and closing said opening defined thereby, said valve closure means including a dished member of springy sheet material having a hollow interior directed toward said opening defined by said seating surface in the closed position of said closure means, said dished springy member having a central region situated upstream of said plane and a springy endless metal peripheral region situated in said plane in engagement with said metal seating surface when said closure means is in said closed position thereof thereby forming a metal-to-metal seating relationship, said springy endless metal peripheral region being situated, in the unstressed condition of said springy sheet material and open position of said dished member, in a plane located at a given distance from the central region of said dished member, and moving means including a mov-able frame means operatively rigidly connected to said central region of said dished member of springy sheet material for mov-ing the latter about a turning axis from said open position dis-placed away from said opening to said closed position where said metal peripheral region engages said metal seating surface and is located closer to said central region than said given distance so that said springy metal peripheral region presses against said metal seating surface in the closed position of said closure means.
2. The combination of claim 1 and wherein said valve closure means comprises a rectangular configuration with said central region extending for substantially the full length thereof and said movable frame fixed to said dished member only at said central region thereof so that the part of said dished member situated outwardly beyond said central region thereof is free to be deflected when engaging said seating surface.
3. The combination of claim 1 and wherein a back-up sheet member is fixed between said frame and said dished member and carries behind said peripheral region of said dished member a limiting means for limiting the extent of deflection thereof.
4. The combination of claim 1 and wherein said seat means is formed at least in the region of said seating surface with a plurality of slits distributed along and extending inwardly from said seating surface so that said seat means is free to contract and expand at said slits, and a plurality of covering sheet members fixed to said seat means and bridging said slits thereof with said covering sheet members having curved portions extending across said slits to accommodate expansion and contraction of said seat means.
5. The combination of claim 1 and wherein said moving means includes a rotary shaft whose axis coincides with said turning axis, and said frame extends substantially radially from and fixed to said shaft and fixed to said central region of said springy dished member.
6. The combination of claim 5 and wherein said frame has a side directed away from said dished springy member and fixedly carrying a second springy dished member identical with said first-mentioned springy dished member, and a second valve seat means identical with said first-mentioned valve seat means situated in and fixed to a second duct and positioned to be en-gaged by said second dished springy member when said first-men-tioned member is in said open position thereof, so that a fluid may be selectively directed to one or the other of the ducts which respectively carry the first and second valve seat means.
7. The combination of claim 3 and wherein said back-up sheet member carries a second limiting means cooperating with said peripheral region of said springy dished member for limiting movement thereof away from said back-up sheet.
8. The combination of claim 7 and wherein said second limiting means includes a plurality of bolts respectively fixed to said back-up sheet, said peripheral region of said springy dished member being formed with openings through which shanks of said bolts extend, and said bolts respectively having heads larger than the latter openings and situated at the side of said peripheral region opposite from said back-up sheet.
9. The combination of claim 6 and wherein said pair of valve seat means respectively have said seating surfaces thereof situated in planes which are at substantially right angles to each other and said frame means having mutually inclined surfaces to which said pair of springy dished members are connected, said inclined surfaces situating edge regions of said dished members distant from said axis closer to each other than edge regions thereof which are nearer to said axis and said shaft being turn-able about its axis through somewhat more than 90° for locating said pair of springy dished members respectively in closed posi-tions respectively engaging said seating surfaces.
10. The combination of claim 1 and wherein backup means is secured with said movable frame and is provided directly adja-cent and rearwardly of said springy sheet material dished member with respect to said opening for controlling flexure of said peripheral region.
11. The combination of claim 1 and wherein said seat means includes at least in the region of said metal seating surface a plurality of covered slits distributed along said metal seating surface for accommodating expansion and contraction of said seat means.
12. A valve adapted for use in high temperature fluid flow service comprising first and second endless valve seat means having first and second outer fastening regions, respectively, fastened to the surfaces of first and second ducts, respectively, through which fluid is adapted to flow, each of said valve seat means having an inner seat region situated inwardly of said outer fastening region and terminating in an endless rigid metal seat-ing surface located in predetermined plane generally perpendicu-lar to the direction of fluid flow through said ducts, said first and second metal seating surfaces defining first and second open-ings through which the fluid is adapted to flow, first and second valve closure means each of which comprises a flexible member including a central region and a peripheral region, said periph-eral region being offset with respect to said central region and comprising a flexible metal portion located closer to said plane than said central region and being disposed for engagement with a respective one of said first and second metal seating sur-faces when said first and second valve closure means are in their closed position, said metal portion of said peripheral region being disposed in metal-to-metal contact with said metal seating surface when the corresponding one of said first and second valve closure means is in its closed position, first and second backup means disposed adjacent a respective one of said first and second flexible members on the side thereof opposite from the respective one of said first and second metal seating surfaces for controlling flexure of at least said metal portion of said peripheral region, and a support frame disposed between said first and second backup means of said first and second valve closure means and secured only at said central region of the corresponding one of said flexible members, and means operably connected with said frame for rotatably moving said valve clos-ure means between opened and closed positions whereby a corres-ponding one of said metal portions of said peripheral regions of said first and second valve closure means engages a corres-ponding one of said first and second metal seating surfaces thereby to provide a metal-to-metal seal therebetween.
13. A valve comprising endless valve seat means having an outer fastening region adapted to be fastened to the surface of a duct through which a fluid is adapted to flow and an inner seat region situated inwardly of said outer fastening region and terminating in an endless seating surface located in a pre-determined plane generally perpendicular to the direction of fluid flow through the duct, so that said seating surface defines an opening through which the fluid is adapted to flow, valve closure means having a closed position engaging said seating surface and closing said opening defined thereby, said valve closure means including a dished member of springy sheet material having a hollow interior directed toward said opening defined by said seating surface in the closed position of said closure means, said dished springy member having a central region situated up-stream of said plane and a springy endless peripheral region situated in said plane in engagement with said seating surface when said closure means is in said closed position thereof, said springy endless peripheral region being situated, in the un-stressed condition of said springy sheet material, in a plane located at a given distance from the central region of said dished member, seat means being formed at least in the region of said seating surface with a plurality of slits distributed along and extending inwardly from said seating surface so that said seat means is free to contract and expand at said slits, and a plurality of covering sheet members fixed to said seat means and bridging said slits thereof with said covering sheet members having curved portions extending across said slits to accommodate expansion and contraction of said seat means, and moving means operatively connected to said dished member of springy sheet material for moving the latter from an open position displaced away from said opening to a closed position where said periph-eral region engages said seating surface and is located closer to said central region than said given distance so that said springy peripheral region presses against said seating surface in the closed position of said closure means.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55931475A | 1975-03-17 | 1975-03-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1040183A true CA1040183A (en) | 1978-10-10 |
Family
ID=24233122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA247,013A Expired CA1040183A (en) | 1975-03-17 | 1976-03-01 | Valve with spring gate |
Country Status (8)
| Country | Link |
|---|---|
| JP (2) | JPS51116434A (en) |
| BE (1) | BE839607A (en) |
| CA (1) | CA1040183A (en) |
| DE (1) | DE2607079A1 (en) |
| FR (1) | FR2304838A1 (en) |
| GB (1) | GB1547921A (en) |
| IT (1) | IT1056795B (en) |
| SE (1) | SE422354B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8333441D0 (en) * | 1983-12-15 | 1984-01-25 | Qual Rect Ltd | Valve |
| US4718457A (en) * | 1986-06-20 | 1988-01-12 | Luger G William | Diverter valve |
| FR2645598A1 (en) * | 1989-04-06 | 1990-10-12 | Boisseau Gerard | Pump intended for pumping thick (viscous) products |
| DE8910185U1 (en) * | 1989-08-25 | 1989-11-16 | Hermann Rappold & Co Gmbh, 5160 Dueren, De | |
| DE4001369A1 (en) * | 1990-01-18 | 1991-07-25 | Pks Engineering | GAS SOFT |
| DE9003542U1 (en) * | 1990-03-27 | 1990-05-31 | Skw Trostberg Ag, 8223 Trostberg, De | |
| GB9020297D0 (en) * | 1990-09-17 | 1990-10-31 | Grovag Grossventiltech | Diverter valves |
| DE4313894C1 (en) * | 1993-04-28 | 1994-08-18 | Stober & Morlock | Cut-off apparatus for ducts of large cross-sections, in particular for exhaust gas and smoke gas ducts of power stations |
| DE19608567C1 (en) * | 1996-03-06 | 1997-10-09 | Dampers Engineering Gmbh | Stop-valve for gas passage heat-insulated from surroundings |
| DE10054003B4 (en) * | 2000-11-01 | 2005-09-01 | Büttner Gesellschaft für Trocknungs- und Umweltechnik mbH | Shut-off device for gas ducts, in particular for hot gas ducts with large cross-sections for installations for drying wood chips |
| US6435320B1 (en) * | 2001-04-17 | 2002-08-20 | Delphi Technologies, Inc. | Solenoid based park brake method |
| DE10310039A1 (en) * | 2003-03-06 | 2004-09-16 | G. Kromschröder AG | Fitting to shut off or adjust the volume flow of a medium |
| JP2008151305A (en) * | 2006-12-19 | 2008-07-03 | Yanmar Co Ltd | Change-over device |
| JP5454437B2 (en) * | 2010-09-24 | 2014-03-26 | トヨタ自動車株式会社 | Wastegate valve device |
| NL2007102C2 (en) | 2011-07-13 | 2013-01-15 | Global Power Netherlands B V | Improved diverter damper. |
| JP6085463B2 (en) * | 2012-02-03 | 2017-02-22 | 株式会社不二工機 | Flow path switching valve |
| AT514432B1 (en) * | 2013-05-22 | 2015-01-15 | Compact Power Plant Products Gmbh | diverter |
| DE102014105564A1 (en) * | 2014-04-17 | 2015-10-22 | Faurecia Emissions Control Technologies, Germany Gmbh | flap valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1755464A (en) * | 1927-10-29 | 1930-04-22 | Williams Samuel | Valve for pneumatic conveyers |
| FR747296A (en) * | 1932-03-09 | 1933-06-14 | Franco Sarroise De Const Mecan | Direction change device for fluids |
| US2035747A (en) * | 1935-07-20 | 1936-03-31 | Creath N Harris | Two-way valve gate |
| US2767738A (en) * | 1950-12-27 | 1956-10-23 | Blaw Knox Co | Valve assembly for metallurgical furnaces or the like |
-
1976
- 1976-02-21 DE DE19762607079 patent/DE2607079A1/en not_active Withdrawn
- 1976-02-27 SE SE7602873A patent/SE422354B/en unknown
- 1976-03-01 CA CA247,013A patent/CA1040183A/en not_active Expired
- 1976-03-01 IT IT20736/76A patent/IT1056795B/en active
- 1976-03-15 JP JP51027215A patent/JPS51116434A/en active Pending
- 1976-03-16 FR FR7607486A patent/FR2304838A1/en active Granted
- 1976-03-16 BE BE165199A patent/BE839607A/en not_active IP Right Cessation
- 1976-03-17 GB GB5566/76A patent/GB1547921A/en not_active Expired
-
1984
- 1984-02-09 JP JP1984016154U patent/JPS59146660U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SE422354B (en) | 1982-03-01 |
| FR2304838B1 (en) | 1981-04-10 |
| FR2304838A1 (en) | 1976-10-15 |
| GB1547921A (en) | 1979-07-04 |
| SE7602873L (en) | 1976-09-18 |
| BE839607A (en) | 1976-09-16 |
| IT1056795B (en) | 1982-02-20 |
| DE2607079A1 (en) | 1976-09-30 |
| JPS59146660U (en) | 1984-10-01 |
| JPS51116434A (en) | 1976-10-13 |
| JPS6118289Y2 (en) | 1986-06-03 |
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