Патент USA US2115565код для вставки
April 26, 1938. E. A. TURNER 2,115,565 STOKER MECHANISM Filed July 21, 1954 _1E-’1y 2 INVENTOR. g.’ 2,115,565 Patented Apr. 26, 1938 uNiTED STATES PATENT OFFICE 2,115,565 STOKER MECHANISM ’ Edwin Archer Turner, New York, N. Y., assignor, by mesne assignments, to The ‘Standard Stoker Company, Inc., New York, N. Y., a corporation of Delaware Application July 21, 1934, Serial No. 736,316 ’ 3 Claims. (Cl. 110--101) This invention relates to Stoker mechanism and more particularly to fuel distributors or other terminal parts of stokers. The main object of the invention is the pro vision of improved means for cooling the fuel distributor plate of the Stoker exposed to the in tense heat of the fire of the boilerfurnace. Another object of the invention is to employ the pressure fluid of the fuelpropelling blasts as ,lo a cooling medium for the fuel distributor plate of the stoker and to cause this fluid to pass through the fuel distributor plate before entering the pressure regulating valves for the propelling blasts. a A A further object of the invention is the pro vision of means in the pressure fluid supply sys tem of the Stoker for first passing the pressure fluid for the propelling blasts into the fuel dis~ tri-butor plate of the Stoker and thence `to the pressure regulating Valves for the propelling blasts or for cutting out of operation the flow of fluid to the fuel distributor plate and passing the fluid directly to the aforesaid regulating valves. ` l Other objects and advantages of `the invention will be apparent from the following description taken in connection with the accompanying drawing, in which, i Fig. l is a central vertical longitudinal sec tional view through the rear portion of a boiler furnace with the device- of the invention simi larly shown; Fig. 2 is a sectional View taken on the line 2-2 of Fig. 1; and . Fig. 3 is a plan view of the chambered fuel dis tributor of the invention. On the drawing, IU illustrates a boiler furnace having the upstanding wall II which embodies the firing opening IZ through the lower portion 40 of which fuel is delivered to the furnace by the stoker I3 and above which stoker fuel may be fed manually through the firing opening, the upper part of which is covered by the usual form of ñredoor I4. Only that portion of the stoker 45 I3 is shown which is necessary to illustrate the present invention. The Stoker I3 includes the discharge conduit I5, the mouth portion I6 of which opens for wardly into the firing opening I2. A distributor 50 plate or terminal part Il of the Stoker is posi `tioned in the mouth portion I6 where it is re movably secured to the conduit by spaced tap bolts i8. The plate or terminal part I1 extends forwardly through the firing opening into the 55 furnace I0 and because of its location it is ex posed to the _flame o-f the fire or to the intense heat thereof. 'I'his plate may carry the abut ment ribs I 9 or other equivalent means for coop erating with the pressure fluid fuel propelling blasts discharging from the rearwardly disposed Ul jet or distributor head 20 to spread the fuel over the flrebed. The distributor head 20 is mounted in the mouth portion I6 back of the distributor plate il and is secured in this position by the cap screws _ 10 2I. Jet openings 22 in the front face of the head 20 in a position to direct pressure fluid over the plate I'I communicate with a plurality of separated chambers 23. Each chamber is open at its bottom end to receive one of the supply, 15 pipes 24 leading from a manifold 25 disposed on the wall Il at one side of the stoker conduit. The chamber 26 of the manifold communicates with the supply pipes 24 and it receives pressure fluid from the pipe 21. A regulating valve such 5 20 as an ordinary globe or needle Valve 28 is placed -in each supply line 24 between the manifold and the distributor head to control the pressure of the fluid propelling blasts. Thus far the construction described is well` 25 known in the art, particularly as embodied inthe “Standard BK Type Stoker”. The novelty of the present invention is the provision with the construction described or the like of means for employing the pressure fluid for the fuel pro pelling blasts as a cooling medium for the dis tributor plate of the Stoker in a manner not to interfere with the operation and control of the propelling blasts. This means now will be de scribed. , 35 Pressure fluid from a suitable source of Supply is conducted by the main supply line 30 through the globe valve 3I to the two-Way valve 32. The supply pipe 2T of the manifold opens into one side o-f the two-way valve 32 and at the opposite 4.0 side a supply line 33 leads from the aforesaid Valve to the distributor plate IT‘where it opens into an enclosed chamber I'Ia formed at the under side of the plate constituting in effect a chambered jacket. The chamber Ila is divided by the ribs I'Ib into a plurality of smaller charn~ bers I'Ic which communicate at opposite ends through the apertures as at I'ld in the ribs. At the same side of the plate but at the end thereof opposite the opening for the intake line 33, a pipe 34 leads from the chamber of the plate to the two-way valve 32 into which it opens opposite the main supply line 30. As best shown in Fig. 2, the Valve member 32a of the two-Way valve can be set by the'handle 2 2,115,565 3219 to divert the pressure fluid from the main supply line 30 either to the supply line 2l or to the supply line 33. Any suitable form of two-way valve may be used that will control the pressure fluid as described. In normal operation of the Stoker mechanism, the fuel advances upwardly in the discharge con duit l5 and forwardly into the mouth portion therethrough arranged to discharge fuel propel ling blasts across the upper surface of the dis tributor plate, a manifold having a pressure fluid supply chamber, supply lines establishing com munication between said chamber and the pas 5 sages in the distributor head, regulating valves in said supply lines adapted to control said blasts, of action of the pressure fluid propelling blastsv discharging from the jet openings 22. The pres sure fluid to >the jet openings is ñrst brought and means for supplying pressure fluid into said hollow distributor plate and thence into the sup ply chamber of said manifold, said means in 10 cluding a valve mechanism operable to out off the supply of pressure fluid to said hollow dis tributor plate and to divert said fluid directly from a source of supply through the main supply to said supply chamber of the manifold. I6 where it rolls or falls over the distributor head 2D onto the distributor plate il within the zone line 3B and its valve Si to the two-way valve 32. 'Ifnere the pressure fluid is directed by the setting 2. A Stoker mechanism for supplying fuel to a boiler furnace comprising a distributor table lo of the valve member 32a into the pipe line 33 g cated at the furnace end of said mechanism and from which it flows into the- chamber Ila of the distributor plate. Within this chamber the pres sure fluid flows longitudinally back and forth through the smaller connecting chambers llc until it reaches the outlet line 34 through which it flows back into thetwo-way valve 32 on the other side of the valve member 32a which directs it into the supply pipe 2l and thence to the chamber '26 of the manifold 25. From the manifold the pressure fluid flows into the pipes 24 which conduct the pressure fluid to the chambers of the distributor head 20. The '30 valves 28 in the pipes 24 control the pressure of the blasts discharging through the jet openings wall and means providing a chamber beneath 20 said top wall, a jet head having a passage there through arranged to discharge a blast of fluid under pressure across the top wall of said dis tributor plate for projecting fuel over the furnace ñrebed, and means leading from a source of sup ply for supplying pressure fluid directly into said chamber and thence into the passage in said jet head, said last named means including valve mechanism operable to cut off the supply of pres 25 sure fluid to said chamber and to divert such 30 fluid from the source of supply to the passage in and may be regulated independently of one an said jet head. other to discharge propelling blasts of different 3. A Stoker mechanism for supplying fuel to a boiler furnace comprising a distributor table lo cated at the furnace end of said mechanism and 35 forces. 35 being exposed to the heat of the furnace, said distributor table having a fuel supporting top ' ` Should the exposed portion of the chambered plate Il eventually crack or burn through, caus ing a flow of pressure fluid into the furnace, the flow of fluid .to the chambered plate can be cut off and the fluid fed directly to the manifold by changing the setting of the valve member 32a so that it will cause the pressure fluid to pass directly from'the main supply line 38 to the manifold connection line 2l.V , Preferably, I contemplate utilizing saturated steam as the pressure fluid. The vsaturated 'steam passing through the chambered plate Il Ywill _ab sorb heat and serve to cool the plate; and; in effect, the chambered plate will'function some what as a super-heater for the saturated steam tending to decrease the water content thereof and thus minimize so-called water-cutting of the jet openings 22. I claim: ' Y 1. In a Stoker mechanism for a boiler furnace, a hollow distributor plate adapted to extend into the furnace, a distributor head having passages being exposed to the heat of the furnace, said distributor table having a fuel supporting top wall and means providing a chamber beneath said top wall, a jet head having a passage there through arranged to discharge a blast of fluid 40 under pressure across the tcp wall of said dis tributor table for projecting fuel over the furnace fìrebed, a manifold having a pressure fluid sup ply chamber, a supply line establishing communi cation between the second named chamber and 45 the passage in said jet head, a regulating valve in said supply line adapted to control the flow of fluid from the second named chamber to the passage in said jet head, and means leading from a source of supply for supplying pressure fluid 50 directly into the flrst named chamber and .thence into the second named chamber, said means in cluding valve mechanism operable to cut off the supply of pressure fluid to the ñrst named charn ber and divert such to the secon-d named chamber. 55 EDWIN ARCHER TURNER.