US20050235888A1 - Fuel nozzle for a fossil fuel fired combustion arrangement - Google Patents
Fuel nozzle for a fossil fuel fired combustion arrangement Download PDFInfo
- Publication number
- US20050235888A1 US20050235888A1 US10/829,878 US82987804A US2005235888A1 US 20050235888 A1 US20050235888 A1 US 20050235888A1 US 82987804 A US82987804 A US 82987804A US 2005235888 A1 US2005235888 A1 US 2005235888A1
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- United States
- Prior art keywords
- coal nozzle
- pin
- engagement element
- nozzle body
- nozzle tip
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/02—Structural details of mounting
- F23C5/06—Provision for adjustment of burner position during operation
Definitions
- the present invention relates to a fuel nozzle for a fossil fuel fired combustion arrangement of the type having fossil fuel delivery systems that deliver pulverized coal to coal fired steam generators and more specifically, to a pulverized solid fuel nozzle having a pulverized solid nozzle tip pivotally mounted relative to the pulverized solid nozzle body of the pulverized solid fuel nozzle.
- U.S. Pat. No. 2,895,435 discloses a tilting nozzle designed to provide substantially uniform distribution of the fuel-air mixture leaving the tilting nozzle and substantially uniform velocity across the discharge opening of the tilting nozzle into the furnace.
- the tilting nozzle includes an inner conduit within an outer conduit and a plurality of baffles or division walls within the inner conduit arranged in planes substantially parallel to fluid flow which divide the inner conduit into a multiplicity of parallel channels.
- 4,274,343 discloses a fuel-fired admission assembly of the type incorporating a split coal bucket having an upper and a lower coal nozzle pivotally mounted to the coal delivery pipe and independently tiltable of each other.
- a plate is disposed along the longitudinal axis of the coal delivery pipe with its leading edge oriented across the inlet end of the coal delivery pipe so that that portion of the primary air pulverized coal stream having a high coal concentration enters the coal delivery pipe on one side of the plate and that portion of the primary air-pulverized coal stream having a low coal concentration enters the coal delivery pipe on one side of the plate and that portion of the primary air-pulverized coal stream having a low coal concentration enters the coal delivery pipe on the other side of the plate.
- Another object of the invention to provide to a pulverized solid fuel nozzle having a pulverized solid nozzle tip pivotally mounted relative to the pulverized solid nozzle body of the pulverized solid fuel nozzle that will advantageously permit installation and de-installation of the pivot mounting by an access path interiorly of the pulverized solid nozzle tip.
- the apparatus includes a latch interconnecting assembly having a pin for insertion in a traversing movement along an insertion axis through both the through hole of the coal nozzle tip and a correspondingly aligned pivot support hole of the coal nozzle body.
- the pin has a traverse end and an inside end with the traverse end of the pin being inserted during the traversing movement initially through the pivot support hole of the coal nozzle body and thereafter through the through hole of the one side of the coal nozzle tip, whereupon, in the fully inserted position of the pin, the traverse end of the pin is outward of the one side of the coal nozzle body and the inside end of the pin is inward of the coal nozzle body.
- the apparatus includes an engagement element for resisting a withdrawal movement of the pin in a direction opposite to its traversing movement, the engagement element being reversibly movable between a deployed position in which the engagement element engages the pin to resist withdrawal movement of the pin in a direction opposite to its traversing movement and a non-deployed position in which resistance of withdrawal movement of the pin by the engagement element is insufficient to prevent withdrawal of the pin from the throughhole of the coal nozzle tip.
- the path of movement of the engagement element between its deployed position and its non-deployed position is such that, throughout such movement of the engagement element, the path of movement of the engagement element can be intersected by a radial plane passing through the pin perpendicular to the insertion axis.
- FIG. 1 is a diagrammatic representation in the nature of a vertical sectional view of a pulverized solid fuel-fired furnace having a solid fuel nozzle in which the of the inventive pivot mounting apparatus of the present invention may be utilized;
- FIG. 2 is a side elevational view of a pulverized solid fuel nozzle of the type employed in the firing system of the pulverized solid fuel-fired furnace that is illustrated in FIG. 1 ;
- FIG. 3 is a perspective elevational view, in partial section, of the one embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle;
- FIG. 4 is an exploded perspective elevational view, in partial section, of the coal nozzle having the one embodiment of the inventive pivot mounting apparatus shown in FIG. 3 ;
- FIG. 5 is an enlarged partial sectional elevational view of the pivot mounting apparatus shown in FIG. 3 ;
- FIG. 6 is an enlarged exploded perspective view of the pivot mounting apparatus shown in FIG. 3 ;
- FIG. 7 is a perspective view of the coal nozzle tip in its non-installed position in which it has been removed from its pivot mounting connection with the coal nozzle body;
- FIG. 8 is a perspective view of the coal nozzle tip during guided movement thereof into its pivot mounting connection with the coal nozzle body;
- FIG. 9 is a perspective view of the coal nozzle tip in its partially overlapping disposition with the coal nozzle body
- FIG. 10 is an enlarged sectional view of a portion of the mutually facing respective right-hand interior side of the coal nozzle tip in facing relationship with the respective right-hand exterior side of the coal nozzle body taken along line X-X in FIG. 9 ;
- FIG. 11 is an enlarged sectional perspective view of the sleeve insert of the one embodiment of the inventive pivot mounting apparatus
- FIG. 12 is a perspective elevational view, in partial section, of another embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle;
- FIG. 13 is an enlarged sectional view of a portion of the mutually facing respective right-hand interior side of the coal nozzle tip in facing relationship with the respective right-hand exterior side of the coal nozzle body taken along line XIII-XIII in FIG. 12 ;
- FIG. 14 is a perspective elevational view, in partial section, of a further embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle;
- FIG. 15 is an enlarged sectional view of a portion of the mutually facing respective right-hand interior side of the coal nozzle tip in facing relationship with the respective right-hand exterior side of the coal nozzle body taken along line XV-XV in FIG. 14 .
- FIG. 1 there is depicted therein a pulverized solid fuel-fired furnace 10 having a burner region 14 within which the combustion of pulverized solid fuel and air is initiated and a plurality of fuel compartments 12 through which the pulverized solid fuel is injected into the burner region 14 .
- the hot gases that are produced from combustion of the pulverized solid fuel and air rise upwardly in the pulverized solid fuel-fired furnace 10 and give up heat to the fluid passing through the tubes (not shown in the interest of maintaining clarity of illustration in the drawing) that in conventional fashion line all four of the walls of the pulverized solid fuel-fired furnace 10 .
- the steam commonly is made to flow to a turbine (not shown), which forms one component of a turbine/generator set (not shown), such that the steam provides the motive power to drive the turbine (not shown) and thereby also the generator (not shown), which in know fashion is cooperatively associated with the turbine, such that electricity is thus produced from the generator (not shown).
- the pulverized solid fuel-fired furnace 10 includes a housing preferably in the form of a main windbox 20 that is provided with a plurality of air compartments (not shown) through which air supplied from a suitable source thereof (not shown) is injected into the burner region 14 of the pulverized solid fuel-fired furnace 10 .
- the plurality of fuel compartments 12 inject solid fuel into the burner region 14 of the pulverized solid fuel-fired furnace 10 .
- the solid fuel is supplied to the plurality of fuel compartments 12 by means of a pulverized solid fuel supply means 22 that includes a pulverizer 24 and a plurality of pulverized solid fuel ducts 26 .
- the pulverized solid fuel is transported through the pulverized solid fuel ducts 26 from the pulverizer 24 to which the pulverized solid fuel ducts 26 are connected in fluid flow relation to the plurality of fuel compartments 12 to which the pulverized solid fuel ducts 26 are also connected in fluid flow relation.
- the pulverizer 24 is operatively connected to a fan (not shown), which in turn is operatively connected in fluid flow relation with the previously mentioned plurality of air compartments (not shown), such that air is supplied from the fan (not shown) to not only the aforesaid plurality of air compartments (not shown) but also to the pulverizer 24 whereby the pulverized solid fuel supplied from the pulverizer 24 to the aforesaid plurality of fuel compartments (not shown) is transported through the pulverized solid fuel ducts 26 in an air stream in a manner which is well known to those skilled in the art of pulverizers.
- the pulverized solid fuel-fired furnace 10 is exemplarily provided with two or more discrete levels of separated overfire air incorporated in each corner of the pulverized solid fuel-fired furnace 10 so as to be located between the top of the main windbox 20 and a furnace outlet plane 28 of the pulverized solid fuel-fired furnace 10 , i.e., a low level of separated overfire air 30 and a high level of separated overfire air 32 .
- each fuel compartment 12 comprises a pulverized solid fuel nozzle 34 suitably supported in mounted relation within the fuel compartment 12 and a fuel nozzle tip 36 .
- Any conventional form of mounting means suitable for use for such a purpose may be employed to mount the pulverized solid fuel nozzle 34 in the fuel compartment 12 .
- the pulverized solid fuel nozzle 34 includes an elbow-like portion 38 that is designed, although it has not been depicted in FIG. 2 in the interest of maintaining clarity of illustration therewithin, to be operatively connected at one end 40 to one of the pulverized solid fuel ducts 26 .
- the other end 42 of the elbow-like portion 38 is operatively connected through the use of any conventional form of fastening means suitable for use for such a purpose to a longitudinally extending portion 44 , whose length is such as to essentially correspond to the depth of the fuel compartment 12 .
- the pulverized solid fuel nozzle 34 has a coal nozzle tip and coal nozzle body and the present invention provides a pivot mounting apparatus for pivotally mounting to one another the coal nozzle tip and coal nozzle body of a pulverized solid fuel nozzle, such as the pulverized solid fuel nozzle 34 shown in FIG. 2 .
- FIG. 3 illustrates a pulverized solid fuel nozzle in the form of a pulverized coal nozzle 208 having one embodiment of the inventive pivot mounting apparatus for pivotally mounting the coal nozzle tip and coal nozzle body of the pulverized solid fuel nozzle to one another, hereinafter designated as the pivot mounting apparatus 210 .
- the pulverized coal nozzle 208 comprises a coal nozzle tip 212 and a coal nozzle body 214 .
- FIG. 4 which is an exploded perspective elevational view, in partial section, of the pulverized coal nozzle 208 having the one embodiment of the inventive pivot mounting apparatus shown in FIG.
- the coal nozzle tip 212 has a pair of through holes 216 and the coal nozzle body 214 has a pair of through holes 218 , whereupon, to place the coal nozzle in its operating position in which the coal nozzle tip 212 is pivotally mounted to the coal nozzle body 214 of the coal nozzle, each of the coal nozzle tip through holes 216 is aligned with a respective one of the coal nozzle body through holes 218 in connection with the installation of the pivot mounting apparatus 210 , such installation to be described in more detail hereinafter.
- pivot mounting apparatus 210 is installed with respect to only a respective single one of the coal nozzle tip through holes 216 that is aligned with a respective one of the coal nozzle body through holes 218 , it is to be understood that the pivot mounting apparatus 210 is installed in the same manner with respect to the other one of the coal nozzle tip through holes 216 that is aligned with the other one of the coal nozzle body through holes 218 .
- the pivot mounting apparatus 210 comprises a latch interconnecting assembly 220 that includes a pin 222 for insertion in a traversing movement through an insertion passage 224 which passes through both the through hole 216 of the coal nozzle tip 212 and the through hole 218 of the coal nozzle body 214 upon the mutually facing positioning of respective sides of the coal nozzle tip 212 and the coal nozzle body 214 with one another with their respective through holes 216 , 218 both co-axial with an insertion axis IAX.
- FIG. 6 which is an enlarged exploded perspective view of the pivot mounting apparatus 210 shown in FIG.
- the insertion passage 224 in this exemplary installation arrangement, is formed of a separate passage-forming means extending through the respective aligned through holes 216 , 218 of the coal nozzle tip 212 and the coal nozzle body 214 , although it is to be understood, as will be described in more detail hereinafter in connection with another embodiment of the present invention, that the insertion passage 224 can alternatively be formed by the respective aligned through holes 216 , 218 of the coal nozzle tip 212 and the coal nozzle body 214 themselves without a separate passage-forming means.
- the pin 222 has a traverse end 226 and an inside end 228 whereupon, in the fully inserted position of the pin 228 , the traverse end 226 of the pin 222 is outward of the side of the coal nozzle body 214 facing the coal nozzle tip 212 and the inside end 228 of the pin 222 is outward of the opposite non-facing side of the coal nozzle body 214 .
- the coal nozzle tip 212 is pivotally mounted with its sides outward of the sides of the coal nozzle body 214 —i.e., the sides of the coal nozzle tip 212 extend, in overlapping manner, over the furnace-side end of the coal nozzle body 214 —it can be understood, as best seen in FIG.
- the insertion passage 224 through which the pin 22 traverses has a radial extent RET as measured perpendicularly to the insertion axis IAX.
- This radial extent RET of the installation passage 224 is defined by a passage forming element, to be described in more detail hereinafter, that extends through the respective aligned through holes 216 , 218 of the coal nozzle tip 212 and the coal nozzle body 214 .
- the latch interconnecting assembly 220 of the pivot mounting apparatus 210 further includes an engagement element 232 for resisting a withdrawal movement of the pin in a direction opposite to its traversing movement.
- the engagement element 232 is movable between a non-deployed position and a deployed position in which withdrawal of the pin 222 in a direction opposite to its traversing movement is resisted.
- the engagement element 232 and the pin 222 are cooperatively configured with respect to one another such that, in the non-deployed position of the engagement element 232 , the radial extent PIR of the latch interconnecting assembly 220 (as best seen in FIG.
- FIG. 7 which is a perspective view of the coal nozzle tip 212 in its non-installed position in which it has been removed from its pivot mounting connection with the coal nozzle body 214 , the coal nozzle tip 212 is initially prepared for mounting into its pivot mounting connection with the coal nozzle body 214 by the securement of one end of a conventional horizontal adjusting rod 234 to the coal nozzle tip 212 . It can be seen in FIG. 7
- FIG. 9 which is a perspective view of the coal nozzle tip 212 in its partially overlapping disposition with the coal nozzle body 214
- the next installation step following the installation illustrated in FIG. 8 involves the insertion of the pin 222 such that the pin traverses the insertion passage 224 formed, in this embodiment, by the respective associated pair of through holes 216 , 218 on the right hand side of the coal nozzle tip 212 and the coal nozzle body 214 aligned with one another.
- FIG. 10 which is an enlarged sectional view of a portion of the respective right-hand interior side of the coal nozzle tip 212 in facing relationship with the respective right-hand exterior side of the coal nozzle body 214 taken along line X-X in FIG.
- the pin 222 in its fully inserted position, extends fully through the insertion passage 224 such that the traverse end 226 of the pin 222 is outward of the side of the coal nozzle body 214 facing the coal nozzle tip 212 and the inside end 228 of the pin 222 is outward of the opposite non-facing side of the coal nozzle body 214 .
- the passage-forming means that forms the insertion passage 224 is, in the one embodiment of the inventive pivot mounting apparatus, a sleeve insert 236 , as is best seen in FIG. 10 and FIG. 11 , which is an enlarged sectional perspective view of the sleeve insert 236 .
- the sleeve insert 236 has a left collar portion 238 and a right collar portion 240 each having an outer diameter relatively slightly smaller than the diameter of the through hole 216 of the coal nozzle tip 212 such that the left collar portion 238 of the sleeve insert 236 is received with only a minimal play in one end of the through hole 216 and the right collar portion 240 is received with only minimal play in the other end of the through hole 216 .
- the sleeve insert 236 includes a middle portion 242 having a larger diameter than the left collar portion 238 and the right collar portion 240 .
- the sleeve insert 236 has a throughbore 244 extending completely through the left collar portion 238 , the right collar portion 240 , and the middle portion 242 and the radius of the throughbore 244 defines the radius RET of the insertion passage 224 .
- the sleeve insert 236 is already positioned with the left collar portion 238 and the right collar portion 240 thereof received in the respective ends of the through hole 216 of the coal nozzle tip 212 before the coal nozzle tip 212 is guided, as is shown in FIG. 8 , onto its overlapping disposition on the coal nozzle body 214 . It can accordingly be seen that, in the installation step shown in FIG.
- the insertion of the pin 222 to traverse the insertion passage 224 involves initially moving the pin 222 into the interior of the coal nozzle body 214 until the pin 222 is coaxial with the insertion axis LAX and thereafter inserting the traverse end 226 of the pin 222 initially through the throughhole 218 of the coal nozzle body 214 and subsequently completely through the throughbore 244 of the sleeve insert 236 until the traverse end 226 of the pin 222 extends outwardly of the coal nozzle body 214 .
- a stop flange 246 is provided at the inside end 228 of the pin 222 that abuts the interior side of the coal nozzle body 214 upon full insertion of the pin 222 .
- the engagement element 232 comprises, in the one embodiment of the inventive pivot mounting apparatus, a cover plate 248 , a detent groove 250 formed on the pin 222 , and a detent latch rod 252 .
- the cover plate 248 is fixedly secured to the exterior side of the coal nozzle tip 212 (i.e., the side of the coal nozzle tip 212 that does not face the coal nozzle body 214 in the installed position) and the cover plate includes, as best seen in FIG. 5 , an axial bore 254 in which the traverse end 226 of the pin 222 is received in the fully inserted position of the pin 222 and a cross bore 256 that is perpendicular to the axial bore 254 and is radially offset therefrom.
- the detent groove 250 is a semi-hemispherical groove formed in the pin 222 with its groove bottom radius being less than the radius of the pin 222 .
- the detent latch rod 252 includes a longitudinal body 258 , a drop hinge tip 260 pivotally connected to one end of the longitudinal body 258 and a coil spring 262 having one end secured to the longitudinal body 258 .
- a drop hinge tip 260 pivotally connected to one end of the longitudinal body 258 and a coil spring 262 having one end secured to the longitudinal body 258 .
- the drop hinge tip 260 of the detent latch rod 252 which is handled so as to be axially aligned with the longitudinal body 258 of the detent latch rod 252 , is inserted fully through and beyond the cross bore 256 in the cover plate 248 to an extent such that the drop hinge tip 260 pivots downwardly, once it has cleared the cross bore 256 , due to the force of gravity acting upon it.
- the biasing force of the coil spring 262 and the securement of the coil spring 262 to the longitudinal body 258 of the detent latch rod 252 are configured such that non-secured end of the coil spring 262 engages the side circumferential surface of the cover plate 248 and the coil spring 262 is compressed slightly as the drop hinge tip 260 of the detent latch rod 252 is moved sufficiently beyond the cross bore 256 in the cover plate 248 to ensure that the drop hinge tip 260 pivots downwardly due to the force of gravity once it has cleared the cross bore 256 .
- coil spring 262 expands and thereby draws the drop hinge tip 260 , in its downwardly pivoted condition, against the side circumferential surface of the cover plate 248 , whereupon it can be assured that the detent latch rod 252 will not be inadvertently dislodged from its detent engaging position with the pin 222 and cover plate 248 during operation of the coal nozzle tip 212 and the coal nozzle body 214 .
- the engagement element 232 reversibly resists a withdrawal movement of the pin 222 in a direction opposite to its traversing movement with the engagement element 232 being reversibly movable between its deployed position in which the engagement element 232 engages the pin 222 to resist withdrawal movement of the pin 222 in a direction opposite to its traversing movement and a non-deployed position in which resistance of withdrawal movement of the pin 222 by the engagement element 232 is insufficient to prevent withdrawal of the pin 222 from the throughhole 216 of the coal nozzle tip 214 .
- the path of movement of the engagement element 232 between its deployed position and its non-deployed position is such that, throughout such movement of the engagement element 232 , the path of movement of the engagement element 232 can be intersected by a radial plane RPL, as seen in FIG. 6 , passing through the pin 222 perpendicular to the insertion axis IAX.
- the engagement element 232 and the pin 222 are cooperatively configured with respect to one another such that, in the non-deployed position of the engagement element 232 , the radial extent PIR of the latch interconnecting assembly 220 , as measured through the pin 222 and the respective portion, if any, of the engagement element 232 in contact with the pin 222 , is equal to the radius of the pin 222 and this radius is no greater than the radial extent RET of the insertion passage 224 defined by the radius of the throughbore 244 of the sleeve insert 236 .
- the radial extent PIR of the latch interconnecting assembly 220 is greater than the radial extent RET of the insertion passage 224 in the deployed position of the engagement element 232 .
- the radial extent PIR of the latch interconnecting assembly 220 is equal to the radial extent PIR as measured along a radius of the pin 222 perpendicular to the detent latch rod 252 , whereupon this radial extent (see FIG.
- FIG. 12 is a perspective elevational view, in partial section, of another embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle, hereinafter designated as the pivot mounting apparatus 310 .
- the pivot mounting apparatus 310 In connection with the mounting of the coal nozzle in its operating position in which the coal nozzle tip 212 is pivotally mounted to the coal nozzle body 214 of the coal nozzle by means of the pivot mounting apparatus 310 , each of the coal nozzle tip through holes 216 is aligned with a respective one of the coal nozzle body through holes 218 , such installation to be described in more detail hereinafter.
- pivot mounting apparatus 310 is installed with respect to only a respective one of the coal nozzle tip through holes 216 that is aligned with a respective one of the coal nozzle body through holes 218 , it is to be understood that the pivot mounting apparatus 310 is installed in the same manner with respect to the other one of the coal nozzle tip through holes 216 that is aligned with the other one of the coal nozzle body through holes 218 .
- FIG. 13 which is an enlarged sectional view of a portion of the respective right-hand interior side of the coal nozzle tip 212 in facing relationship with the respective right-hand exterior side of the coal nozzle body 214 taken along line XIII-XIII in FIG.
- the pivot mounting apparatus 310 comprises a latch interconnecting assembly 320 that includes a pin 322 for insertion in a traversing movement through an insertion passage 324 which passes through both the through hole 216 of the coal nozzle tip 212 and the through hole 218 of the coal nozzle body 214 upon the mutually facing positioning of respective sides of the coal nozzle tip 212 and the coal nozzle body 214 with one another with their respective through holes 216 , 218 both co-axial with an insertion axis IAX.
- the insertion passage 324 in this exemplary installation arrangement, is partially formed, on the one hand, by a sleeve insert 336 extending through a respective pair of the aligned through holes 216 , 218 of the coal nozzle tip 212 and the coal nozzle body 214 and, on the other hand, the balance of the insertion passage 324 is formed by the other through hole 218 of the coal nozzle body 214 .
- the pin 322 has a traverse end 326 and an inside end 328 whereupon, in the fully inserted position of the pin 328 , the traverse end 326 of the pin 322 is outward of the side of the coal nozzle body 214 facing the coal nozzle tip 212 and the inside end 328 of the pin 322 is outward of the opposite non-facing side of the coal nozzle body 214 .
- the latch interconnecting assembly 320 of the pivot mounting apparatus 310 further includes an engagement element 332 for resisting a withdrawal movement of the pin in a direction opposite to its traversing movement.
- the engagement element 332 is movable between a non-deployed position and a deployed position in which withdrawal of the pin 322 in a direction opposite to its traversing movement is resisted.
- the sleeve insert 336 that partially forms the insertion passage 324 is, in the another embodiment of the inventive pivot mounting apparatus, a right collar portion 340 having an outer diameter relatively slightly smaller than the diameter of the through hole 216 of the coal nozzle tip 212 such that the right collar portion 340 is received with only minimal play in the through hole 216 of the coal nozzle tip 212 .
- the sleeve insert 336 includes a middle portion 342 having a larger diameter than the right collar portion 340 .
- the sleeve insert 336 has a threaded throughbore 344 extending completely through the right collar portion 340 and the middle portion 342 .
- the pin 322 comprises a threaded distal portion 370 compatibly configured with respect to the threaded throughbore 344 of the sleeve insert 336 such that the threaded distal portion 370 can be meshingly engaged with the threaded throughbore 344 of the sleeve insert 336 .
- the pin 322 comprises a proximate portion 372 and a reduced diameter mid-portion 374 intermediate the threaded distal portion 370 and the proximate portion 372 .
- the reduced diameter mid-portion 374 has a relatively smaller diameter than the threaded distal portion 370 and the proximate portion 372 .
- the engagement element 332 has a threaded central bore 376 compatibly configured with respect to the threaded distal portion 370 of the pin 322 such that the threaded distal portion 370 of the pin 322 can traverse completely through the threaded central bore 376 of the engagement element 332 .
- the engagement element 332 also includes a set screw 378 threadably movable in a radial direction.
- the coal nozzle tip 212 is initially prepared for mounting into its pivot mounting connection with the coal nozzle body 214 by the securement of one end of the conventional horizontal adjusting rod 234 to the coal nozzle tip 212 .
- the through holes 216 of the coal nozzle tip 212 are open—i.e., the pin 322 has not yet been inserted therethrough.
- the coal nozzle tip 212 is then guided onto its overlapping disposition on the coal nozzle body 214 .
- each respective interior side of the coal nozzle tip 212 is in facing relationship with a respective exterior side of the coal nozzle body 214 with the respective associated through holes 216 , 218 being aligned with one another.
- the next installation step following the installation of the coal nozzle tip 212 , with the horizontal adjusting rod 234 secured thereto, in its overlapping disposition on the coal nozzle body 21 involves the insertion of the pin 322 such that the pin traverses the insertion passage 324 , whereupon the pin 322 , in its fully inserted position, extends fully through the insertion passage 324 such that the traverse end 326 of the pin 322 is outward of the side of the coal nozzle body 214 facing the coal nozzle tip 212 and the inside end 328 of the pin 322 is outward of the opposite non-facing side of the coal nozzle body 214 .
- the sleeve insert 336 has already been positioned with the right collar portion 340 thereof received in the through hole 216 of the coal nozzle tip 212 before the coal nozzle tip 212 is guided onto its overlapping disposition on the coal nozzle body 214 .
- the insertion of the pin 322 to traverse the insertion passage 324 in a traversing movement involves initially moving the pin 322 into the interior of the coal nozzle body 214 until the pin 322 is coaxial with the insertion axis LAX and thereafter inserting the traverse end 326 of the pin 322 initially through the throughhole 218 of the coal nozzle body 214 and thereafter threading the threaded distal portion 370 of the pin 322 successively through the threaded central bore 376 of the engagement element 332 and then threading the threaded distal portion 370 of the pin 322 into threaded engagement with the threaded portion 344 of the sleeve insert 336 .
- the engagement element 332 resists any withdrawal movement of the pin 322 in that a withdrawal movement of the pin 322 —that is, a movement of the pin 322 comprising unthreading movement of the threaded distal portion 370 of the pin 322 relative to the threaded portion 344 of the sleeve insert 336 —will bring the engagement element 332 into contact with the outward side of the coal nozzle body 214 in the vicinity of the throughhole 218 of the coal nozzle body 214 and this contact will resist further withdrawal movement of the pin 322 .
- the engagement element 332 reversibly resists a withdrawal movement of the pin 322 in a direction opposite to its traversing movement with the engagement element 332 being reversibly movable between its deployed position in which the engagement element 332 engages the pin 322 to resist withdrawal movement of the pin 322 in a direction opposite to its traversing movement and a non-deployed position in which withdrawal movement of the pin 322 is not resisted by the engagement element 332 , at least to an extent sufficient for the pin 322 to be withdrawn from the throughhole 216 of the coal nozzle tip 214 .
- the path of movement of the engagement element 332 between its deployed position and its non-deployed position is such that, throughout such movement of the engagement element 332 , the path of movement of the engagement element 332 can be intersected by a radial plane RPL, as seen in FIG. 12 , passing through the pin 322 perpendicular to the insertion axis LAX.
- the engagement element 332 and the pin 322 are cooperatively configured with respect to one another such that, in the non-deployed position of the engagement element 332 , the radial extent PIR of the latch interconnecting assembly 320 , as measured through the pin 322 and the respective portion, if any, of the engagement element 332 in contact with the pin 322 , is equal to the radius of the pin 322 and this radius is no greater than the radial extent RET of the insertion passage 324 defined by the radius of the throughbore 344 of the sleeve insert 336 .
- the radial extent PIR of the latch interconnecting assembly 320 is greater than the radial extent RET of the insertion passage 324 in the deployed position of the engagement element 332 .
- the radial extent PIR of the latch interconnecting assembly 320 is equal to the radial extent PIR as measured along a radius of the pin 322 perpendicular to the detent latch rod 352 , whereupon this radial extent is measured with respect to the insertion axis IAX along the so-specified radius of the pin 322 perpendicular to the detent latch rod 352 to the lower edge of the detent latch rod 352 and this radial extent is greater than the radial extent RET of the insertion passage 324 .
- FIG. 14 is a perspective elevational view, in partial section, of a further embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle, hereinafter designated as the pivot mounting apparatus 410 .
- the pivot mounting apparatus 410 In connection with the mounting of the coal nozzle in its operating position in which the coal nozzle tip 212 is pivotally mounted to the coal nozzle body 214 of the coal nozzle by means of the pivot mounting apparatus 410 , each of the coal nozzle tip through holes 216 is aligned with a respective one of the coal nozzle body through holes 218 , such installation to be described in more detail hereinafter.
- pivot mounting apparatus 410 is installed with respect to only a respective one of the coal nozzle tip through holes 216 that is aligned with a respective one of the coal nozzle body through holes 218 , it is to be understood that the pivot mounting apparatus 410 is installed in the same manner with respect to the other one of the coal nozzle tip through holes 216 that is aligned with the other one of the coal nozzle body through holes 218 .
- FIG. 15 is an enlarged sectional view of a portion of the respective right-hand interior side of the coal nozzle tip 212 in facing relationship with the respective right-hand exterior side of the coal nozzle body 214 taken along line XV-XV in FIG.
- the pivot mounting apparatus 410 comprises a latch interconnecting assembly 420 that includes a pin 422 for insertion in a traversing movement through an insertion passage 424 which passes through both the through hole 216 of the coal nozzle tip 212 and the through hole 218 of the coal nozzle body 214 upon the mutually facing positioning of respective sides of the coal nozzle tip 212 and the coal nozzle body 214 with one another with their respective through holes 216 , 218 both co-axial with an insertion axis IAX.
- the insertion passage 424 in this exemplary installation arrangement, is formed by a sleeve insert 436 extending through a respective pair of the aligned through holes 216 , 218 of the coal nozzle tip 212 and the coal nozzle body 214 and through the through hole 218 of the coal nozzle body 214 .
- the pin 422 has a traverse end 426 and an inside end 428 whereupon, in the fully inserted position of the pin 428 , the traverse end 426 of the pin 422 is outward of the side of the coal nozzle body 214 facing the coal nozzle tip 212 and the inside end 428 of the pin 422 is outward of the opposite non-facing side of the coal nozzle body 214 .
- the latch interconnecting assembly 420 of the pivot mounting apparatus 410 further includes an engagement element 432 for resisting a withdrawal movement of the pin in a direction opposite to its traversing movement.
- the engagement element 432 is movable between a non-deployed position and a deployed position in which withdrawal of the pin 422 in a direction opposite to its traversing movement is resisted.
- the sleeve insert 436 that forms the insertion passage 424 is, in the further embodiment of the inventive pivot mounting apparatus, has a left collar portion 438 and a right collar portion 440 each having an outer diameter relatively slightly smaller than the diameter of the through hole 216 of the coal nozzle tip 212 such that the left collar portion 438 of the sleeve insert 436 is received with only a minimal play in one end of the through hole 216 and the right collar portion 440 is received with only minimal play in the other end of the through hole 216 .
- the sleeve insert 436 includes a middle portion 442 having a larger diameter than the left collar portion 438 and the right collar portion 440 .
- the sleeve insert 436 has a throughbore 444 extending completely through the left collar portion 438 , the right collar portion 440 , and the middle portion 442 .
- the pin 422 includes an annular cross-bore 446 extending completely along a diametrical line of the pin 422 .
- a spring 448 and a solid ball 450 are disposed in the cross-bore 446 .
- the sleeve insert 436 includes a semi-cylindrical groove 452 opening into the hollow center of the sleeve insert.
- One end of the spring 448 is in engagement with the groove 452 and the other end of the spring 448 presses against the solid ball 450 to continually bias or urge the solid ball 450 radially outwardly relative to the pin 422 .
- the spring 448 urges the solid ball 450 partially radially outwardly of the cross-bore 446 of the pin 422 to seat in the groove 452 of the sleeve insert 436 .
- This seating of the solid ball 450 in the groove 452 of the sleeve insert 436 permits the engagement element 432 to resist withdrawal movement of the pin 422 in the deployed position of the engagement element.
- the engagement element 432 reversibly resists a withdrawal movement of the pin 422 in a direction opposite to its traversing movement with the engagement element 432 being reversibly movable between its deployed position in which the engagement element 432 engages the pin 422 to resist withdrawal movement of the pin 422 in a direction opposite to its traversing movement and a non-deployed position in which withdrawal movement of the pin 422 is not resisted by the engagement element 432 , at least to an extent sufficient for the pin 422 to be withdrawn from the throughhole 216 of the coal nozzle tip 214 .
- the path of movement of the engagement element 432 between its deployed position and its non-deployed position is such that, throughout such movement of the engagement element 432 , the path of movement of the engagement element 432 can be intersected by a radial plane RPL, as seen in FIG. 14 , passing through the pin 422 perpendicular to the insertion axis IAX.
Abstract
Description
- The present invention relates to a fuel nozzle for a fossil fuel fired combustion arrangement of the type having fossil fuel delivery systems that deliver pulverized coal to coal fired steam generators and more specifically, to a pulverized solid fuel nozzle having a pulverized solid nozzle tip pivotally mounted relative to the pulverized solid nozzle body of the pulverized solid fuel nozzle.
- It has long been known in the prior art to employ pulverized solid fuel nozzle tips in firing systems of the type that are utilized in pulverized solid fuel-fired furnaces. U.S. Pat. No. 2,895,435 discloses a tilting nozzle designed to provide substantially uniform distribution of the fuel-air mixture leaving the tilting nozzle and substantially uniform velocity across the discharge opening of the tilting nozzle into the furnace. To this end, the tilting nozzle includes an inner conduit within an outer conduit and a plurality of baffles or division walls within the inner conduit arranged in planes substantially parallel to fluid flow which divide the inner conduit into a multiplicity of parallel channels. U.S. Pat. No. 4,274,343 discloses a fuel-fired admission assembly of the type incorporating a split coal bucket having an upper and a lower coal nozzle pivotally mounted to the coal delivery pipe and independently tiltable of each other. A plate is disposed along the longitudinal axis of the coal delivery pipe with its leading edge oriented across the inlet end of the coal delivery pipe so that that portion of the primary air pulverized coal stream having a high coal concentration enters the coal delivery pipe on one side of the plate and that portion of the primary air-pulverized coal stream having a low coal concentration enters the coal delivery pipe on one side of the plate and that portion of the primary air-pulverized coal stream having a low coal concentration enters the coal delivery pipe on the other side of the plate.
- Although the pulverized solid fuel nozzles that form the subject matter of the above-noted U.S. patents have been demonstrated to be operative for their intended purposes, there has nevertheless been evidenced in the prior art a need for such pulverized solid fuel nozzles to be further improved. In this regard, there is a need for an apparatus that permits a straightforward and reliable installation and de-installation of the pivot mounting by which the pulverized solid nozzle tip of a pulverized solid fuel nozzle and the pulverized solid nozzle body of the pulverized solid fuel nozzle are pivotally connected to one another.
- It is an object of the present invention to provide to a pulverized solid fuel nozzle having a pulverized solid nozzle tip pivotally mounted relative to the pulverized solid nozzle body of the pulverized solid fuel nozzle that will advantageously permit a straightforward and reliable installation and de-installation of the pivot mounting by which the pulverized solid nozzle tip of a pulverized solid fuel nozzle and the pulverized solid nozzle body of the pulverized solid fuel nozzle are pivotally connected to one another.
- Another object of the invention to provide to a pulverized solid fuel nozzle having a pulverized solid nozzle tip pivotally mounted relative to the pulverized solid nozzle body of the pulverized solid fuel nozzle that will advantageously permit installation and de-installation of the pivot mounting by an access path interiorly of the pulverized solid nozzle tip.
- The afore-mentioned objects of the present invention are achieved, in accordance with one aspect of the present invention, by an apparatus for pivotally mounting one side of a coal nozzle tip of a coal nozzle operable in a pulverized solid fuel-fired furnace to a coal nozzle body of the coal nozzle, wherein the one side of the coal nozzle tip having a through hole therethrough and the coal nozzle tip and the coal nozzle body are mounted relative to one another such that the one side of the coal nozzle tip is outward of the coal nozzle body. The apparatus includes a latch interconnecting assembly having a pin for insertion in a traversing movement along an insertion axis through both the through hole of the coal nozzle tip and a correspondingly aligned pivot support hole of the coal nozzle body.
- In accordance with further features of the one aspect of the present invention, the pin has a traverse end and an inside end with the traverse end of the pin being inserted during the traversing movement initially through the pivot support hole of the coal nozzle body and thereafter through the through hole of the one side of the coal nozzle tip, whereupon, in the fully inserted position of the pin, the traverse end of the pin is outward of the one side of the coal nozzle body and the inside end of the pin is inward of the coal nozzle body. Also, the apparatus includes an engagement element for resisting a withdrawal movement of the pin in a direction opposite to its traversing movement, the engagement element being reversibly movable between a deployed position in which the engagement element engages the pin to resist withdrawal movement of the pin in a direction opposite to its traversing movement and a non-deployed position in which resistance of withdrawal movement of the pin by the engagement element is insufficient to prevent withdrawal of the pin from the throughhole of the coal nozzle tip. The path of movement of the engagement element between its deployed position and its non-deployed position is such that, throughout such movement of the engagement element, the path of movement of the engagement element can be intersected by a radial plane passing through the pin perpendicular to the insertion axis.
-
FIG. 1 is a diagrammatic representation in the nature of a vertical sectional view of a pulverized solid fuel-fired furnace having a solid fuel nozzle in which the of the inventive pivot mounting apparatus of the present invention may be utilized; -
FIG. 2 is a side elevational view of a pulverized solid fuel nozzle of the type employed in the firing system of the pulverized solid fuel-fired furnace that is illustrated inFIG. 1 ; -
FIG. 3 is a perspective elevational view, in partial section, of the one embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle; -
FIG. 4 is an exploded perspective elevational view, in partial section, of the coal nozzle having the one embodiment of the inventive pivot mounting apparatus shown inFIG. 3 ; -
FIG. 5 is an enlarged partial sectional elevational view of the pivot mounting apparatus shown inFIG. 3 ; -
FIG. 6 is an enlarged exploded perspective view of the pivot mounting apparatus shown inFIG. 3 ; -
FIG. 7 is a perspective view of the coal nozzle tip in its non-installed position in which it has been removed from its pivot mounting connection with the coal nozzle body; -
FIG. 8 is a perspective view of the coal nozzle tip during guided movement thereof into its pivot mounting connection with the coal nozzle body; -
FIG. 9 is a perspective view of the coal nozzle tip in its partially overlapping disposition with the coal nozzle body; -
FIG. 10 is an enlarged sectional view of a portion of the mutually facing respective right-hand interior side of the coal nozzle tip in facing relationship with the respective right-hand exterior side of the coal nozzle body taken along line X-X inFIG. 9 ; -
FIG. 11 is an enlarged sectional perspective view of the sleeve insert of the one embodiment of the inventive pivot mounting apparatus; -
FIG. 12 is a perspective elevational view, in partial section, of another embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle; -
FIG. 13 is an enlarged sectional view of a portion of the mutually facing respective right-hand interior side of the coal nozzle tip in facing relationship with the respective right-hand exterior side of the coal nozzle body taken along line XIII-XIII inFIG. 12 ; -
FIG. 14 is a perspective elevational view, in partial section, of a further embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle; and -
FIG. 15 is an enlarged sectional view of a portion of the mutually facing respective right-hand interior side of the coal nozzle tip in facing relationship with the respective right-hand exterior side of the coal nozzle body taken along line XV-XV inFIG. 14 . - Referring now to
FIG. 1 , there is depicted therein a pulverized solid fuel-firedfurnace 10 having aburner region 14 within which the combustion of pulverized solid fuel and air is initiated and a plurality offuel compartments 12 through which the pulverized solid fuel is injected into theburner region 14. The hot gases that are produced from combustion of the pulverized solid fuel and air rise upwardly in the pulverized solid fuel-firedfurnace 10 and give up heat to the fluid passing through the tubes (not shown in the interest of maintaining clarity of illustration in the drawing) that in conventional fashion line all four of the walls of the pulverized solid fuel-firedfurnace 10. Then, the hot gases exit the pulverized solid fuel-firedfurnace 10 through ahorizontal pass 16 of the pulverized solid fuel-firedfurnace 10, which in turn leads to arear gas pass 18 of the pulverized solid fuel-firedfurnace 10. Both thehorizontal pass 16 and therear gas pass 18 commonly contain other heat exchanger surface (not shown) for generating and superheating steam, in a manner well-known to those skilled in this art. Thereafter, the steam commonly is made to flow to a turbine (not shown), which forms one component of a turbine/generator set (not shown), such that the steam provides the motive power to drive the turbine (not shown) and thereby also the generator (not shown), which in know fashion is cooperatively associated with the turbine, such that electricity is thus produced from the generator (not shown). - The pulverized solid fuel-fired
furnace 10 includes a housing preferably in the form of amain windbox 20 that is provided with a plurality of air compartments (not shown) through which air supplied from a suitable source thereof (not shown) is injected into theburner region 14 of the pulverized solid fuel-firedfurnace 10. In addition, within thewindbox 20, the plurality offuel compartments 12 inject solid fuel into theburner region 14 of the pulverized solid fuel-firedfurnace 10. The solid fuel is supplied to the plurality offuel compartments 12 by means of a pulverized solid fuel supply means 22 that includes apulverizer 24 and a plurality of pulverizedsolid fuel ducts 26. The pulverized solid fuel is transported through the pulverizedsolid fuel ducts 26 from thepulverizer 24 to which the pulverizedsolid fuel ducts 26 are connected in fluid flow relation to the plurality offuel compartments 12 to which the pulverizedsolid fuel ducts 26 are also connected in fluid flow relation. Although not shown in the interest of maintaining clarity of illustration in the drawing, thepulverizer 24 is operatively connected to a fan (not shown), which in turn is operatively connected in fluid flow relation with the previously mentioned plurality of air compartments (not shown), such that air is supplied from the fan (not shown) to not only the aforesaid plurality of air compartments (not shown) but also to thepulverizer 24 whereby the pulverized solid fuel supplied from thepulverizer 24 to the aforesaid plurality of fuel compartments (not shown) is transported through the pulverizedsolid fuel ducts 26 in an air stream in a manner which is well known to those skilled in the art of pulverizers. The pulverized solid fuel-firedfurnace 10 is exemplarily provided with two or more discrete levels of separated overfire air incorporated in each corner of the pulverized solid fuel-firedfurnace 10 so as to be located between the top of themain windbox 20 and afurnace outlet plane 28 of the pulverized solid fuel-firedfurnace 10, i.e., a low level ofseparated overfire air 30 and a high level ofseparated overfire air 32. - Referring next to
FIG. 2 of the drawings, which is a schematic representation of one of the plurality offuel compartments 12, it can be seen that eachfuel compartment 12 comprises a pulverizedsolid fuel nozzle 34 suitably supported in mounted relation within thefuel compartment 12 and afuel nozzle tip 36. Any conventional form of mounting means suitable for use for such a purpose may be employed to mount the pulverizedsolid fuel nozzle 34 in thefuel compartment 12. The pulverizedsolid fuel nozzle 34 includes an elbow-like portion 38 that is designed, although it has not been depicted inFIG. 2 in the interest of maintaining clarity of illustration therewithin, to be operatively connected at oneend 40 to one of the pulverizedsolid fuel ducts 26. Theother end 42 of the elbow-like portion 38 is operatively connected through the use of any conventional form of fastening means suitable for use for such a purpose to a longitudinally extendingportion 44, whose length is such as to essentially correspond to the depth of thefuel compartment 12. The pulverizedsolid fuel nozzle 34 has a coal nozzle tip and coal nozzle body and the present invention provides a pivot mounting apparatus for pivotally mounting to one another the coal nozzle tip and coal nozzle body of a pulverized solid fuel nozzle, such as the pulverizedsolid fuel nozzle 34 shown inFIG. 2 . - Reference is now to had
FIG. 3 , which illustrates a pulverized solid fuel nozzle in the form of a pulverizedcoal nozzle 208 having one embodiment of the inventive pivot mounting apparatus for pivotally mounting the coal nozzle tip and coal nozzle body of the pulverized solid fuel nozzle to one another, hereinafter designated as thepivot mounting apparatus 210. The pulverizedcoal nozzle 208 comprises acoal nozzle tip 212 and acoal nozzle body 214. As seen inFIG. 4 , which is an exploded perspective elevational view, in partial section, of the pulverizedcoal nozzle 208 having the one embodiment of the inventive pivot mounting apparatus shown inFIG. 3 , thecoal nozzle tip 212 has a pair of throughholes 216 and thecoal nozzle body 214 has a pair of throughholes 218, whereupon, to place the coal nozzle in its operating position in which thecoal nozzle tip 212 is pivotally mounted to thecoal nozzle body 214 of the coal nozzle, each of the coal nozzle tip throughholes 216 is aligned with a respective one of the coal nozzle body throughholes 218 in connection with the installation of thepivot mounting apparatus 210, such installation to be described in more detail hereinafter. Although the hereinafter following description will describe the manner in which thepivot mounting apparatus 210 is installed with respect to only a respective single one of the coal nozzle tip throughholes 216 that is aligned with a respective one of the coal nozzle body throughholes 218, it is to be understood that thepivot mounting apparatus 210 is installed in the same manner with respect to the other one of the coal nozzle tip throughholes 216 that is aligned with the other one of the coal nozzle body throughholes 218. - As seen in
FIG. 3 andFIG. 5 , which is an enlarged partial sectional elevational view of thepivot mounting apparatus 210 shown inFIG. 3 , thepivot mounting apparatus 210 comprises alatch interconnecting assembly 220 that includes apin 222 for insertion in a traversing movement through aninsertion passage 224 which passes through both the throughhole 216 of thecoal nozzle tip 212 and the throughhole 218 of thecoal nozzle body 214 upon the mutually facing positioning of respective sides of thecoal nozzle tip 212 and thecoal nozzle body 214 with one another with their respective throughholes FIG. 6 , which is an enlarged exploded perspective view of thepivot mounting apparatus 210 shown inFIG. 3 , theinsertion passage 224, in this exemplary installation arrangement, is formed of a separate passage-forming means extending through the respective aligned throughholes coal nozzle tip 212 and thecoal nozzle body 214, although it is to be understood, as will be described in more detail hereinafter in connection with another embodiment of the present invention, that theinsertion passage 224 can alternatively be formed by the respective aligned throughholes coal nozzle tip 212 and thecoal nozzle body 214 themselves without a separate passage-forming means. - The
pin 222 has atraverse end 226 and aninside end 228 whereupon, in the fully inserted position of thepin 228, thetraverse end 226 of thepin 222 is outward of the side of thecoal nozzle body 214 facing thecoal nozzle tip 212 and theinside end 228 of thepin 222 is outward of the opposite non-facing side of thecoal nozzle body 214. In view of the fact, noted above, that thecoal nozzle tip 212 is pivotally mounted with its sides outward of the sides of thecoal nozzle body 214—i.e., the sides of thecoal nozzle tip 212 extend, in overlapping manner, over the furnace-side end of thecoal nozzle body 214—it can be understood, as best seen inFIG. 6 , that the respective side of thecoal nozzle body 214 facing thecoal nozzle tip 212 is the exterior side of thecoal nozzle body 214 and the opposite non-facing side of thecoal nozzle body 214 is the interior side of thecoal nozzle body 214. - As seen in
FIG. 6 , theinsertion passage 224 through which thepin 22 traverses has a radial extent RET as measured perpendicularly to the insertion axis IAX. This radial extent RET of theinstallation passage 224 is defined by a passage forming element, to be described in more detail hereinafter, that extends through the respective aligned throughholes coal nozzle tip 212 and thecoal nozzle body 214. - The
latch interconnecting assembly 220 of thepivot mounting apparatus 210 further includes an engagement element 232 for resisting a withdrawal movement of the pin in a direction opposite to its traversing movement. In the one embodiment of the inventivepivot mounting apparatus 210 and as best seen inFIG. 5 andFIG. 6 , the engagement element 232 is movable between a non-deployed position and a deployed position in which withdrawal of thepin 222 in a direction opposite to its traversing movement is resisted. The engagement element 232 and thepin 222 are cooperatively configured with respect to one another such that, in the non-deployed position of the engagement element 232, the radial extent PIR of the latch interconnecting assembly 220 (as best seen inFIG. 5 ), as measured through thepin 222 and the respective portion, if any, of the engagement element 232 in contact with thepin 222, is no greater than the radial extent RET of theinsertion passage 224 and, in the deployed position of the engagement element 232, the radial extent PIR of thelatch interconnecting assembly 220, as measured through thepin 222 and the respective portion of the engagement element 232 in contact with thepin 222, is greater than the radial extent RET of theinsertion passage 224. - The relationship between the radial extent RET of the
insertion passage 224 and the radial extent PIR of thelatch interconnecting assembly 220 will become evident in the following description of the installation steps for installing the one embodiment of the inventive pivot mounting apparatus in its installed position. As seen inFIG. 7 , which is a perspective view of thecoal nozzle tip 212 in its non-installed position in which it has been removed from its pivot mounting connection with thecoal nozzle body 214, thecoal nozzle tip 212 is initially prepared for mounting into its pivot mounting connection with thecoal nozzle body 214 by the securement of one end of a conventionalhorizontal adjusting rod 234 to thecoal nozzle tip 212. It can be seen inFIG. 7 that the throughholes 216 of thecoal nozzle tip 212 are open—i.e., thepin 222 has not yet been inserted therethrough. Following the installation step illustrated inFIG. 7 , thecoal nozzle tip 212, with thehorizontal adjusting rod 234 secured thereto, is then guided, as is shown inFIG. 8 , onto its overlapping disposition on thecoal nozzle body 214. In connection with this step, there occurs the mutually facing positioning of respective sides of thecoal nozzle tip 212 and thecoal nozzle body 214 with one another with their respective throughholes coal nozzle tip 212 is in facing relationship with a respective exterior side of thecoal nozzle body 214 with the respective associated throughholes - As seen in
FIG. 9 , which is a perspective view of thecoal nozzle tip 212 in its partially overlapping disposition with thecoal nozzle body 214, the next installation step following the installation illustrated inFIG. 8 involves the insertion of thepin 222 such that the pin traverses theinsertion passage 224 formed, in this embodiment, by the respective associated pair of throughholes coal nozzle tip 212 and thecoal nozzle body 214 aligned with one another. With reference toFIG. 10 , which is an enlarged sectional view of a portion of the respective right-hand interior side of thecoal nozzle tip 212 in facing relationship with the respective right-hand exterior side of thecoal nozzle body 214 taken along line X-X inFIG. 9 , it can be seen that thepin 222, in its fully inserted position, extends fully through theinsertion passage 224 such that thetraverse end 226 of thepin 222 is outward of the side of thecoal nozzle body 214 facing thecoal nozzle tip 212 and theinside end 228 of thepin 222 is outward of the opposite non-facing side of thecoal nozzle body 214. - The passage-forming means that forms the
insertion passage 224 is, in the one embodiment of the inventive pivot mounting apparatus, asleeve insert 236, as is best seen inFIG. 10 andFIG. 11 , which is an enlarged sectional perspective view of thesleeve insert 236. Thesleeve insert 236 has aleft collar portion 238 and aright collar portion 240 each having an outer diameter relatively slightly smaller than the diameter of the throughhole 216 of thecoal nozzle tip 212 such that theleft collar portion 238 of thesleeve insert 236 is received with only a minimal play in one end of the throughhole 216 and theright collar portion 240 is received with only minimal play in the other end of the throughhole 216. Additionally, thesleeve insert 236 includes amiddle portion 242 having a larger diameter than theleft collar portion 238 and theright collar portion 240. Thesleeve insert 236 has athroughbore 244 extending completely through theleft collar portion 238, theright collar portion 240, and themiddle portion 242 and the radius of thethroughbore 244 defines the radius RET of theinsertion passage 224. - The
sleeve insert 236 is already positioned with theleft collar portion 238 and theright collar portion 240 thereof received in the respective ends of the throughhole 216 of thecoal nozzle tip 212 before thecoal nozzle tip 212 is guided, as is shown inFIG. 8 , onto its overlapping disposition on thecoal nozzle body 214. It can accordingly be seen that, in the installation step shown inFIG. 9 , the insertion of thepin 222 to traverse theinsertion passage 224 involves initially moving thepin 222 into the interior of thecoal nozzle body 214 until thepin 222 is coaxial with the insertion axis LAX and thereafter inserting thetraverse end 226 of thepin 222 initially through thethroughhole 218 of thecoal nozzle body 214 and subsequently completely through thethroughbore 244 of thesleeve insert 236 until thetraverse end 226 of thepin 222 extends outwardly of thecoal nozzle body 214. To facilitate the full insertion of thepin 222, a stop flange 246 is provided at theinside end 228 of thepin 222 that abuts the interior side of thecoal nozzle body 214 upon full insertion of thepin 222. - The engagement element 232, as seen in
FIG. 6 , comprises, in the one embodiment of the inventive pivot mounting apparatus, acover plate 248, adetent groove 250 formed on thepin 222, and adetent latch rod 252. Thecover plate 248 is fixedly secured to the exterior side of the coal nozzle tip 212 (i.e., the side of thecoal nozzle tip 212 that does not face thecoal nozzle body 214 in the installed position) and the cover plate includes, as best seen inFIG. 5 , an axial bore 254 in which thetraverse end 226 of thepin 222 is received in the fully inserted position of thepin 222 and a cross bore 256 that is perpendicular to the axial bore 254 and is radially offset therefrom. Thedetent groove 250 is a semi-hemispherical groove formed in thepin 222 with its groove bottom radius being less than the radius of thepin 222. - The
detent latch rod 252 includes alongitudinal body 258, adrop hinge tip 260 pivotally connected to one end of thelongitudinal body 258 and acoil spring 262 having one end secured to thelongitudinal body 258. As seen inFIG. 5 , once thepin 222 has been completely inserted into its fully inserted position in which thetraverse end 226 of thepin 222 is received in thecover plate 248, thepin 222 is rotated as needed to align thedetent groove 250 with the cross bore 256 of thecover plate 248. Thereafter, thedrop hinge tip 260 of thedetent latch rod 252, which is handled so as to be axially aligned with thelongitudinal body 258 of thedetent latch rod 252, is inserted fully through and beyond the cross bore 256 in thecover plate 248 to an extent such that thedrop hinge tip 260 pivots downwardly, once it has cleared the cross bore 256, due to the force of gravity acting upon it. The biasing force of thecoil spring 262 and the securement of thecoil spring 262 to thelongitudinal body 258 of thedetent latch rod 252 are configured such that non-secured end of thecoil spring 262 engages the side circumferential surface of thecover plate 248 and thecoil spring 262 is compressed slightly as thedrop hinge tip 260 of thedetent latch rod 252 is moved sufficiently beyond the cross bore 256 in thecover plate 248 to ensure that thedrop hinge tip 260 pivots downwardly due to the force of gravity once it has cleared the cross bore 256. Thereafter,coil spring 262 expands and thereby draws thedrop hinge tip 260, in its downwardly pivoted condition, against the side circumferential surface of thecover plate 248, whereupon it can be assured that thedetent latch rod 252 will not be inadvertently dislodged from its detent engaging position with thepin 222 andcover plate 248 during operation of thecoal nozzle tip 212 and thecoal nozzle body 214. - It can thus be appreciated that the engagement element 232 reversibly resists a withdrawal movement of the
pin 222 in a direction opposite to its traversing movement with the engagement element 232 being reversibly movable between its deployed position in which the engagement element 232 engages thepin 222 to resist withdrawal movement of thepin 222 in a direction opposite to its traversing movement and a non-deployed position in which resistance of withdrawal movement of thepin 222 by the engagement element 232 is insufficient to prevent withdrawal of thepin 222 from thethroughhole 216 of thecoal nozzle tip 214. The path of movement of the engagement element 232 between its deployed position and its non-deployed position is such that, throughout such movement of the engagement element 232, the path of movement of the engagement element 232 can be intersected by a radial plane RPL, as seen inFIG. 6 , passing through thepin 222 perpendicular to the insertion axis IAX. Additionally, in the one embodiment of the inventive pivot mounting apparatus, the engagement element 232 and thepin 222 are cooperatively configured with respect to one another such that, in the non-deployed position of the engagement element 232, the radial extent PIR of thelatch interconnecting assembly 220, as measured through thepin 222 and the respective portion, if any, of the engagement element 232 in contact with thepin 222, is equal to the radius of thepin 222 and this radius is no greater than the radial extent RET of theinsertion passage 224 defined by the radius of thethroughbore 244 of thesleeve insert 236. Furthermore, with respect to the engagement element 232 of the one embodiment of the inventive pivot mounting apparatus, the radial extent PIR of thelatch interconnecting assembly 220, as measured through thepin 222 and the respective portion of the engagement element 232 in contact with thepin 222, is greater than the radial extent RET of theinsertion passage 224 in the deployed position of the engagement element 232. Specifically, the radial extent PIR of thelatch interconnecting assembly 220, as measured through thepin 222 and the respective portion of the engagement element 232 in contact with thepin 222, is equal to the radial extent PIR as measured along a radius of thepin 222 perpendicular to thedetent latch rod 252, whereupon this radial extent (seeFIG. 5 ) is measured with respect to the insertion axis IAX along the so-specified radius of thepin 222 perpendicular to thedetent latch rod 252 to the lower edge of thedetent latch rod 252 and this radial extent is greater than the radial extent RET of theinsertion passage 224. - Reference is now had to
FIG. 12 , which is a perspective elevational view, in partial section, of another embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle, hereinafter designated as thepivot mounting apparatus 310. In connection with the mounting of the coal nozzle in its operating position in which thecoal nozzle tip 212 is pivotally mounted to thecoal nozzle body 214 of the coal nozzle by means of thepivot mounting apparatus 310, each of the coal nozzle tip throughholes 216 is aligned with a respective one of the coal nozzle body throughholes 218, such installation to be described in more detail hereinafter. Although the hereinafter following description will describe the manner in which thepivot mounting apparatus 310 is installed with respect to only a respective one of the coal nozzle tip throughholes 216 that is aligned with a respective one of the coal nozzle body throughholes 218, it is to be understood that thepivot mounting apparatus 310 is installed in the same manner with respect to the other one of the coal nozzle tip throughholes 216 that is aligned with the other one of the coal nozzle body through holes 218. - As seen in
FIG. 13 , which is an enlarged sectional view of a portion of the respective right-hand interior side of thecoal nozzle tip 212 in facing relationship with the respective right-hand exterior side of thecoal nozzle body 214 taken along line XIII-XIII inFIG. 12 , thepivot mounting apparatus 310 comprises alatch interconnecting assembly 320 that includes apin 322 for insertion in a traversing movement through aninsertion passage 324 which passes through both the throughhole 216 of thecoal nozzle tip 212 and the throughhole 218 of thecoal nozzle body 214 upon the mutually facing positioning of respective sides of thecoal nozzle tip 212 and thecoal nozzle body 214 with one another with their respective throughholes insertion passage 324, in this exemplary installation arrangement, is partially formed, on the one hand, by asleeve insert 336 extending through a respective pair of the aligned throughholes coal nozzle tip 212 and thecoal nozzle body 214 and, on the other hand, the balance of theinsertion passage 324 is formed by the other throughhole 218 of thecoal nozzle body 214. - The
pin 322 has atraverse end 326 and aninside end 328 whereupon, in the fully inserted position of thepin 328, thetraverse end 326 of thepin 322 is outward of the side of thecoal nozzle body 214 facing thecoal nozzle tip 212 and theinside end 328 of thepin 322 is outward of the opposite non-facing side of thecoal nozzle body 214. Thelatch interconnecting assembly 320 of thepivot mounting apparatus 310 further includes anengagement element 332 for resisting a withdrawal movement of the pin in a direction opposite to its traversing movement. Theengagement element 332 is movable between a non-deployed position and a deployed position in which withdrawal of thepin 322 in a direction opposite to its traversing movement is resisted. - The
sleeve insert 336 that partially forms theinsertion passage 324 is, in the another embodiment of the inventive pivot mounting apparatus, aright collar portion 340 having an outer diameter relatively slightly smaller than the diameter of the throughhole 216 of thecoal nozzle tip 212 such that theright collar portion 340 is received with only minimal play in the throughhole 216 of thecoal nozzle tip 212. Additionally, thesleeve insert 336 includes amiddle portion 342 having a larger diameter than theright collar portion 340. Thesleeve insert 336 has a threadedthroughbore 344 extending completely through theright collar portion 340 and themiddle portion 342. - It can be seen that the
pin 322 comprises a threadeddistal portion 370 compatibly configured with respect to the threadedthroughbore 344 of thesleeve insert 336 such that the threadeddistal portion 370 can be meshingly engaged with the threadedthroughbore 344 of thesleeve insert 336. Thepin 322 comprises aproximate portion 372 and a reduced diameter mid-portion 374 intermediate the threadeddistal portion 370 and theproximate portion 372. The reduced diameter mid-portion 374 has a relatively smaller diameter than the threadeddistal portion 370 and theproximate portion 372. Theengagement element 332 has a threadedcentral bore 376 compatibly configured with respect to the threadeddistal portion 370 of thepin 322 such that the threadeddistal portion 370 of thepin 322 can traverse completely through the threadedcentral bore 376 of theengagement element 332. Theengagement element 332 also includes aset screw 378 threadably movable in a radial direction. - The
coal nozzle tip 212 is initially prepared for mounting into its pivot mounting connection with thecoal nozzle body 214 by the securement of one end of the conventionalhorizontal adjusting rod 234 to thecoal nozzle tip 212. The throughholes 216 of thecoal nozzle tip 212 are open—i.e., thepin 322 has not yet been inserted therethrough. Following the installation step of the conventionalhorizontal adjusting rod 234, thecoal nozzle tip 212, with thehorizontal adjusting rod 234 secured thereto, is then guided onto its overlapping disposition on thecoal nozzle body 214. In connection with this step, there occurs the mutually facing positioning of respective sides of thecoal nozzle tip 212 and thecoal nozzle body 214 with one another with their respective throughholes coal nozzle tip 212 is in facing relationship with a respective exterior side of thecoal nozzle body 214 with the respective associated throughholes - The next installation step following the installation of the
coal nozzle tip 212, with thehorizontal adjusting rod 234 secured thereto, in its overlapping disposition on the coal nozzle body 21, involves the insertion of thepin 322 such that the pin traverses theinsertion passage 324, whereupon thepin 322, in its fully inserted position, extends fully through theinsertion passage 324 such that thetraverse end 326 of thepin 322 is outward of the side of thecoal nozzle body 214 facing thecoal nozzle tip 212 and theinside end 328 of thepin 322 is outward of the opposite non-facing side of thecoal nozzle body 214. In connection with this installation step, thesleeve insert 336 has already been positioned with theright collar portion 340 thereof received in the throughhole 216 of thecoal nozzle tip 212 before thecoal nozzle tip 212 is guided onto its overlapping disposition on thecoal nozzle body 214. - The insertion of the
pin 322 to traverse theinsertion passage 324 in a traversing movement involves initially moving thepin 322 into the interior of thecoal nozzle body 214 until thepin 322 is coaxial with the insertion axis LAX and thereafter inserting thetraverse end 326 of thepin 322 initially through thethroughhole 218 of thecoal nozzle body 214 and thereafter threading the threadeddistal portion 370 of thepin 322 successively through the threadedcentral bore 376 of theengagement element 332 and then threading the threadeddistal portion 370 of thepin 322 into threaded engagement with the threadedportion 344 of thesleeve insert 336. In connection with the threading of the threadeddistal portion 370 of thepin 322 fully through the threadedcentral bore 376 of theengagement element 332, once the threadeddistal portion 370 of thepin 322 has passed beyond the threadedcentral bore 376 of theengagement element 332, the reduced diameter mid-portion 374 of thepin 322 is now axially coincident with theengagement element 332 and theengagement element 332 drops downwardly onto the reduced diameter mid-portion 374 of thepin 322 due to the force of gravity acting thereon. Theset screw 378 of theengagement element 332 is then rotated to move the set screw into contact with the reduced diameter mid-portion 374 of thepin 322, thereby securing theengagement element 332 to thepin 322. As can be appreciated, theengagement element 332 resists any withdrawal movement of thepin 322 in that a withdrawal movement of thepin 322—that is, a movement of thepin 322 comprising unthreading movement of the threadeddistal portion 370 of thepin 322 relative to the threadedportion 344 of thesleeve insert 336—will bring theengagement element 332 into contact with the outward side of thecoal nozzle body 214 in the vicinity of thethroughhole 218 of thecoal nozzle body 214 and this contact will resist further withdrawal movement of thepin 322. - It can thus be appreciated that the
engagement element 332 reversibly resists a withdrawal movement of thepin 322 in a direction opposite to its traversing movement with theengagement element 332 being reversibly movable between its deployed position in which theengagement element 332 engages thepin 322 to resist withdrawal movement of thepin 322 in a direction opposite to its traversing movement and a non-deployed position in which withdrawal movement of thepin 322 is not resisted by theengagement element 332, at least to an extent sufficient for thepin 322 to be withdrawn from thethroughhole 216 of thecoal nozzle tip 214. The path of movement of theengagement element 332 between its deployed position and its non-deployed position is such that, throughout such movement of theengagement element 332, the path of movement of theengagement element 332 can be intersected by a radial plane RPL, as seen inFIG. 12 , passing through thepin 322 perpendicular to the insertion axis LAX. Additionally, in the one embodiment of the inventive pivot mounting apparatus, theengagement element 332 and thepin 322 are cooperatively configured with respect to one another such that, in the non-deployed position of theengagement element 332, the radial extent PIR of thelatch interconnecting assembly 320, as measured through thepin 322 and the respective portion, if any, of theengagement element 332 in contact with thepin 322, is equal to the radius of thepin 322 and this radius is no greater than the radial extent RET of theinsertion passage 324 defined by the radius of thethroughbore 344 of thesleeve insert 336. Furthermore, with respect to theengagement element 332 of the one embodiment of the inventive pivot mounting apparatus, the radial extent PIR of thelatch interconnecting assembly 320, as measured through thepin 322 and the respective portion of theengagement element 332 in contact with thepin 322, is greater than the radial extent RET of theinsertion passage 324 in the deployed position of theengagement element 332. Specifically, the radial extent PIR of thelatch interconnecting assembly 320, as measured through thepin 322 and the respective portion of theengagement element 332 in contact with thepin 322, is equal to the radial extent PIR as measured along a radius of thepin 322 perpendicular to the detent latch rod 352, whereupon this radial extent is measured with respect to the insertion axis IAX along the so-specified radius of thepin 322 perpendicular to the detent latch rod 352 to the lower edge of the detent latch rod 352 and this radial extent is greater than the radial extent RET of theinsertion passage 324. - Reference is now had to
FIG. 14 , which is a perspective elevational view, in partial section, of a further embodiment of the inventive pivot mounting apparatus in its installed position on a coal nozzle, hereinafter designated as thepivot mounting apparatus 410. In connection with the mounting of the coal nozzle in its operating position in which thecoal nozzle tip 212 is pivotally mounted to thecoal nozzle body 214 of the coal nozzle by means of thepivot mounting apparatus 410, each of the coal nozzle tip throughholes 216 is aligned with a respective one of the coal nozzle body throughholes 218, such installation to be described in more detail hereinafter. Although the hereinafter following description will describe the manner in which thepivot mounting apparatus 410 is installed with respect to only a respective one of the coal nozzle tip throughholes 216 that is aligned with a respective one of the coal nozzle body throughholes 218, it is to be understood that thepivot mounting apparatus 410 is installed in the same manner with respect to the other one of the coal nozzle tip throughholes 216 that is aligned with the other one of the coal nozzle body through holes 218. - With reference to
FIG. 15 , which is an enlarged sectional view of a portion of the respective right-hand interior side of thecoal nozzle tip 212 in facing relationship with the respective right-hand exterior side of thecoal nozzle body 214 taken along line XV-XV inFIG. 14 , it can be seen that thepivot mounting apparatus 410 comprises alatch interconnecting assembly 420 that includes apin 422 for insertion in a traversing movement through aninsertion passage 424 which passes through both the throughhole 216 of thecoal nozzle tip 212 and the throughhole 218 of thecoal nozzle body 214 upon the mutually facing positioning of respective sides of thecoal nozzle tip 212 and thecoal nozzle body 214 with one another with their respective throughholes insertion passage 424, in this exemplary installation arrangement, is formed by asleeve insert 436 extending through a respective pair of the aligned throughholes coal nozzle tip 212 and thecoal nozzle body 214 and through the throughhole 218 of thecoal nozzle body 214. - The
pin 422 has atraverse end 426 and aninside end 428 whereupon, in the fully inserted position of thepin 428, thetraverse end 426 of thepin 422 is outward of the side of thecoal nozzle body 214 facing thecoal nozzle tip 212 and theinside end 428 of thepin 422 is outward of the opposite non-facing side of thecoal nozzle body 214. Thelatch interconnecting assembly 420 of thepivot mounting apparatus 410 further includes anengagement element 432 for resisting a withdrawal movement of the pin in a direction opposite to its traversing movement. Theengagement element 432 is movable between a non-deployed position and a deployed position in which withdrawal of thepin 422 in a direction opposite to its traversing movement is resisted. - The
sleeve insert 436 that forms theinsertion passage 424 is, in the further embodiment of the inventive pivot mounting apparatus, has aleft collar portion 438 and aright collar portion 440 each having an outer diameter relatively slightly smaller than the diameter of the throughhole 216 of thecoal nozzle tip 212 such that theleft collar portion 438 of thesleeve insert 436 is received with only a minimal play in one end of the throughhole 216 and theright collar portion 440 is received with only minimal play in the other end of the throughhole 216. Additionally, thesleeve insert 436 includes amiddle portion 442 having a larger diameter than theleft collar portion 438 and theright collar portion 440. Thesleeve insert 436 has athroughbore 444 extending completely through theleft collar portion 438, theright collar portion 440, and themiddle portion 442. - The
pin 422 includes anannular cross-bore 446 extending completely along a diametrical line of thepin 422. Aspring 448 and asolid ball 450 are disposed in the cross-bore 446. Thesleeve insert 436 includes asemi-cylindrical groove 452 opening into the hollow center of the sleeve insert. One end of thespring 448 is in engagement with thegroove 452 and the other end of thespring 448 presses against thesolid ball 450 to continually bias or urge thesolid ball 450 radially outwardly relative to thepin 422. Thus, upon axial alignment relative to the axis IAX of theannular cross-bore 446 of thepin 422 and thegroove 452 of thesleeve insert 436, thespring 448 urges thesolid ball 450 partially radially outwardly of the cross-bore 446 of thepin 422 to seat in thegroove 452 of thesleeve insert 436. This seating of thesolid ball 450 in thegroove 452 of thesleeve insert 436 permits theengagement element 432 to resist withdrawal movement of thepin 422 in the deployed position of the engagement element. - It can thus be appreciated that the
engagement element 432 reversibly resists a withdrawal movement of thepin 422 in a direction opposite to its traversing movement with theengagement element 432 being reversibly movable between its deployed position in which theengagement element 432 engages thepin 422 to resist withdrawal movement of thepin 422 in a direction opposite to its traversing movement and a non-deployed position in which withdrawal movement of thepin 422 is not resisted by theengagement element 432, at least to an extent sufficient for thepin 422 to be withdrawn from thethroughhole 216 of thecoal nozzle tip 214. The path of movement of theengagement element 432 between its deployed position and its non-deployed position is such that, throughout such movement of theengagement element 432, the path of movement of theengagement element 432 can be intersected by a radial plane RPL, as seen inFIG. 14 , passing through thepin 422 perpendicular to the insertion axis IAX. - While an embodiment and variations of the present invention have been shown, it will be appreciated that modifications thereof, some of which have been alluded to hereinabove, may still be readily made thereto by those skilled in the art. It is, therefore, intended that the appended claims shall cover the modifications alluded to herein as well as all the other modifications which fall within the true spirit and scope of the present invention.
Claims (6)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/829,878 US6959653B1 (en) | 2004-04-22 | 2004-04-22 | Fuel nozzle for a fossil fuel fired combustion arrangement |
CA002501323A CA2501323C (en) | 2004-04-22 | 2005-03-18 | Fuel nozzle for a fossil fuel fired combustion arrangement |
TW094110735A TWI317004B (en) | 2004-04-22 | 2005-04-04 | Fuel nozzle for a fossil fuel fired combustion arrangement |
IL168162A IL168162A (en) | 2004-04-22 | 2005-04-20 | Fuel nozzle for a fossil fuel fired combustion arrangement |
CNB2005100762735A CN100371641C (en) | 2004-04-22 | 2005-04-22 | Fuel nozzle of burning mineral fuel burner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/829,878 US6959653B1 (en) | 2004-04-22 | 2004-04-22 | Fuel nozzle for a fossil fuel fired combustion arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050235888A1 true US20050235888A1 (en) | 2005-10-27 |
US6959653B1 US6959653B1 (en) | 2005-11-01 |
Family
ID=35135146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/829,878 Expired - Lifetime US6959653B1 (en) | 2004-04-22 | 2004-04-22 | Fuel nozzle for a fossil fuel fired combustion arrangement |
Country Status (5)
Country | Link |
---|---|
US (1) | US6959653B1 (en) |
CN (1) | CN100371641C (en) |
CA (1) | CA2501323C (en) |
IL (1) | IL168162A (en) |
TW (1) | TWI317004B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011059627A2 (en) | 2009-11-13 | 2011-05-19 | Alstom Technology Ltd | Pivot pin for furnace side removal |
JP2014105931A (en) * | 2012-11-28 | 2014-06-09 | Mitsubishi Heavy Ind Ltd | Burner nozzle, and current plate attaching and detaching method thereof |
WO2016100544A1 (en) * | 2014-12-16 | 2016-06-23 | Babcock Power Services, Inc. | Solid fuel nozzle tips |
US10634341B2 (en) | 2016-08-23 | 2020-04-28 | General Electric Technology Gmbh | Overfire air system for low nitrogen oxide tangentially fired boiler |
US11859813B1 (en) * | 2022-12-16 | 2024-01-02 | General Electric Technology Gmbh | Pulverized solid fuel nozzle tip assembly with low contact frame |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7739967B2 (en) * | 2006-04-10 | 2010-06-22 | Alstom Technology Ltd | Pulverized solid fuel nozzle assembly |
US8561553B2 (en) * | 2009-12-17 | 2013-10-22 | Babcock Power Services, Inc. | Solid fuel nozzle tip assembly |
JP7009169B2 (en) * | 2017-11-13 | 2022-01-25 | 三菱パワー株式会社 | The air nozzle and the boiler equipped with it, and how to remove the air nozzle |
US20230038688A1 (en) * | 2021-08-03 | 2023-02-09 | General Electric Technology Gmbh | Pulverized solid fuel nozzle tip assembly with carbon tip portion |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US4520739A (en) * | 1982-07-12 | 1985-06-04 | Combustion Engineering, Inc. | Nozzle tip for pulverized coal burner |
US5435492A (en) * | 1993-12-22 | 1995-07-25 | Combustion Engineering, Inc. | Modular coal nozzle assembly for vapor generation apparatus |
US5820457A (en) * | 1996-01-04 | 1998-10-13 | Aurora Konrad G. Schulz Gmbh & Co. | Air nozzle |
US6145764A (en) * | 1999-10-29 | 2000-11-14 | Rv Industries, Inc. | Replaceable tip for a nozzle |
-
2004
- 2004-04-22 US US10/829,878 patent/US6959653B1/en not_active Expired - Lifetime
-
2005
- 2005-03-18 CA CA002501323A patent/CA2501323C/en not_active Expired - Fee Related
- 2005-04-04 TW TW094110735A patent/TWI317004B/en not_active IP Right Cessation
- 2005-04-20 IL IL168162A patent/IL168162A/en not_active IP Right Cessation
- 2005-04-22 CN CNB2005100762735A patent/CN100371641C/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4520739A (en) * | 1982-07-12 | 1985-06-04 | Combustion Engineering, Inc. | Nozzle tip for pulverized coal burner |
US5435492A (en) * | 1993-12-22 | 1995-07-25 | Combustion Engineering, Inc. | Modular coal nozzle assembly for vapor generation apparatus |
US5820457A (en) * | 1996-01-04 | 1998-10-13 | Aurora Konrad G. Schulz Gmbh & Co. | Air nozzle |
US6145764A (en) * | 1999-10-29 | 2000-11-14 | Rv Industries, Inc. | Replaceable tip for a nozzle |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011059627A2 (en) | 2009-11-13 | 2011-05-19 | Alstom Technology Ltd | Pivot pin for furnace side removal |
US20110114763A1 (en) * | 2009-11-13 | 2011-05-19 | Briggs Jr Oliver G | Pivot pin for furnace side removal |
WO2011059627A3 (en) * | 2009-11-13 | 2011-07-07 | Alstom Technology Ltd | Pivot pin for furnace side removal |
JP2014105931A (en) * | 2012-11-28 | 2014-06-09 | Mitsubishi Heavy Ind Ltd | Burner nozzle, and current plate attaching and detaching method thereof |
WO2016100544A1 (en) * | 2014-12-16 | 2016-06-23 | Babcock Power Services, Inc. | Solid fuel nozzle tips |
US10174939B2 (en) | 2014-12-16 | 2019-01-08 | Babcock Power Services, Inc. | Solid fuel nozzle tips |
US10634341B2 (en) | 2016-08-23 | 2020-04-28 | General Electric Technology Gmbh | Overfire air system for low nitrogen oxide tangentially fired boiler |
US11859813B1 (en) * | 2022-12-16 | 2024-01-02 | General Electric Technology Gmbh | Pulverized solid fuel nozzle tip assembly with low contact frame |
Also Published As
Publication number | Publication date |
---|---|
US6959653B1 (en) | 2005-11-01 |
CN1690510A (en) | 2005-11-02 |
IL168162A (en) | 2009-09-22 |
CN100371641C (en) | 2008-02-27 |
CA2501323C (en) | 2008-07-15 |
TWI317004B (en) | 2009-11-11 |
CA2501323A1 (en) | 2005-10-22 |
TW200600724A (en) | 2006-01-01 |
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