US1791923A - Multiway sludge valve - Google Patents

Description

Feb. 1o, 1931.

M. EULE MULTIWAY SLUDGE VALVE Filed Sept. 30, l929 4 Sheets-Sheet l F550 WA rfa? Jl/PPL Y www@ uoenboz Feb. 1o,- 1931. M, EULE 11,791,923

' MULTIWAY SLUDGE VALVE Filed Sept. 30, 1929 4 Sheets-Shed. 2

- 5mm/wen Feb. lo, 1931. M, EULE 1,791,923

MULTIWAY SLUDGE VALVE I Filed sept. so. 1929 4 'Smets-sheet 's I Feb. 1o,- 1931.` i M. EULE 1,791,923

MULTIWAY SLUDGE VALVE Filed Sept; 30. 1929 4 Sheets-Sheet 4 anne/tez .Patented Feb. 1o, 1931 oFF-ics:

MARTIN .'ULE, 0F BERLIN-SPANDAU, GERMANY, .ASSIGNOR T0 SIEMENS-SCHUCKERT- WERKE AKTIENGESELLSCHAFT, OF BERLINSIEMENSSTADT, GERMANY, A CORPO- RA'rIoN or GERMANY MULTIWAY sturen verve Application led September 30, 1929, Serial No. 396,177, and in Germany June 16, 19%8.

of tube sections through which a uid isv forced in parallel streams, a junction and 5 collecting device into which alllthe individual tube sections discharge and in which the dis charge of all the sections is properly mixed. Another objectl is to provide in a tubular system of the above character a device which equally and effectively distributes the fluid into the individual tube sections.

Another object is to make provisions by which each individual tube section of a tubular system, through which a -luid is forced in a number of parallel streams, can be connected with a chamber in which a much lower pressure exists than in the particular tube sections with which the connection is made.

A further object lis to provide a device which combines the action of a collectorand mixer with means for selectively connecting individual tube 'sections with a chamber of lower pressure.

Lastly, an object is to combine into one single apparatus the collection of a fluid discharged from various tube sections, the distribution of this same fluid into various other tube sections and a device for connecting each of the tube sections, into which the fluid is distributed or from which the fluid is collected, with a chamber of lower pressure.

1 The purpose of temporarily connecting a tube section, through which a fluid is forced under pressure with a chamber of lower pressure, is to discharge the content ofsuch a tube section at high velocity and to thereby wash 'all sludge, sediment or other scale forming matters out of this section and to remove it into another chamber.

In the accompanying drawings I have illus-v trated several forms in which my invention may be reduced'to practice, and in which Fig. 1 shows a diagrammatic lay-out of an lapplication of such a device to a steam generator through the tubular heating elements of which water and steam are forced.

Fig. 2 shows a detail-. design of such a device in longitudinal vertical section in the position whch allows washing out of one tubev section.

Fig.. 2a shows a horizontal section on line 2a-2a in Fig. 2.

Fig.. 3 showsv the same device as Fig. 2 in the' normal position where it acts as collector and distributor.

Fig. d shows diagrammatically thev layout of the tube lines connected to the ap-- section on line cev 1 this figure shows a diagrammatical arrangement of heating tubes of a steam generator located against the -walls of a combustion chamber 4:. The feed water enters through tube 1 into a distributor 2. This distributor divides the water stream coming from 1 into avnu'mber .of parallel water streams which pass through the tube sections 3. Thesev sections are connected at their other ends to a combined collector and multi-wayv sludge valve and distributor 6, the entrance connections to this valve being indicated by two tube connections 5 and 20. The multi-way valve 6 contains a distributor disc 7 which can be rotated from the outside by hand wheel 11. The tubes of the individual boiler sections, as represented by tubes 5 and 2O all enter the valve body through the side' vand emerge at the inside through the bottomA as shown, the passages being spaced so that they register with the vertical passages 1Q of disc 7 of'which one passage is shown in Fig. 1. One passage 8 in disc 7 is arranged so that one of its ends can be brought into registry with vany of the entering tubes v(for instance 5 as shown), Aand the other end terminates at the bottom center of disc 7, whereit registers with a central passage provided in the bottom of valve casing'. This latter passage may be connected by way of discharge tube 9 to any suitable sludge-collecting tank (not shown) or tube 9 may discharge directly into the atmosphere. On the way between valve 6 and conduit 9 a shut-down valve 10 of ordinary design is interposed. In the position of the disc 7 shown, all tube lines, except line 5, are connected through the respective vertical disc passages 12 to the chamber 21 of valve 6, Whereas tube 5 isA connected to discharge pipe 9, through which sludge and sediment present'in tube 5 may be blown out. By turning disc 7 the other tubes may be blown out successively.

The fluid passes from space 21 into other tube sections 13 connected to the upper portion of valve body 6 and which again lead -to boiler portions where they may absorb further heat. These several tube lines discharge finally into a combined collector and multi-way 'valve 15. The individual tube lines 14 terminating at this collector 15, which may have a construction similar to valve 6, can be each connected via a shutdown valve 18 to ablow-out conduit 17 which is here shown leading to theatmosphere. In the course of normal operation valve 18 is closed and the entire discharge of tubes 14 ismixed together in the collector 15 and passes therefrom into the service steam conduit 16.

Figs. 2 and 3 show the design of a combined collector, multi-way sludge valve and distributor in detail. The valve consists in this case of a valve body 30 into which a disc 7, similar to disc 7 in Fig. 1, is inserted. This disc has a vertical passagel 12 for each pipe but one, which latter registers with a U- shaped passage 8 described with reference to Fig. 1. Passages 12 connect the several tubes 20 directly with the mixing chamber 21 and therefrom with the several tubes 13 of additional boiler sections which terminate in the upper part of casing 30. The passage 8 of disc 7 connects the tube with which it registers (in this'case tube 5) andI from which the sludge is to be removed', with the sludge discharge tube 9. Between discharge tube 9 and the valve body a shut-olf valve 10 is provided. Fig. 4 shows diagrammatically the tubes 2O (a, b, c, d, e, f, g) and the tubes 13 (h, z', j, is, Z, m, n) connected to l the valve 6. In the positionshown on Fig. 4, the tube line ,c is to be cleaned and is therefore is connected to the sludge dischar e conduit 9. After the cleaning out of tu e line is finished, the disc 7 can be turned so that passage 8, for instance, will be connected with tube d and then to tube Z, m, ffl, successively. ^f

Fig. 3 shows the valve in normal operating position as a fluid collector and d1str1butor, that is to say, the lluid discharged by all tubes is collected and mixed in the chamber 21 and from there distributed into the tubes 13, and

no sludge is to be blown out'. For this purpose the disc spindle 35 is rotatably-disposed 1n a threaded spindle 19 which can be operated by hand wheel 36 so that the disc can obe raised from its seated position shown in opposite pins 39 mounted on top of the valve casing and which are arranged in number and circumferential *spacing to correspond with the angular spacing of the pipes 20 at their point of entry into the bottom of valve body 30. rl`hus, when disc 7 is lowered from the position shown in Fig. 3 onto its seat, guide dise 31 should be placed into the proper position before it is lowered (which can be done by turning spindle 35 through hand wheel 11) so that when disc 7 is seated its passages 12 will register with all tubes not to be cleared and passage 8 will register with the tube (5 i Fig. 2) to be cleared of sludge.

During normal operation (disc 7 in position shown in Fig. 3) the valve 10 is closed. When disc 7 is in the position, as indicated in Fig. 2, the valve 10 is open. Thus leakage losses during normal operation are prevented. When a tube line is to be washed out, only a negligible amount of Huid would leak from the other tubes 20 into the conduit 9.

A furtherimproved design of the combination valve is shown in Figs. 5 and 6. The fluid, enters the valve from conduits 20 through borings 40 and leaves `the valve through main 16. For the sake of simplicity this modification is designed as a valve which acts only as collector and sludge remover, but not as a re-distributor, and it 'may for instance be employed in Fig. 1 at the point where valve 15 is located. The connection to the conduit 9 is shown in Fig. 6 and numbered as 31. Between 31 and conduit 9, a

shut-down valve should be located as shown in Fig. 1, which is omitted in Figs. 5 and 6 but implied. During normal operation the pressure in sludgeconduit 31 is therefore as high as in conduits 20 and the valve member 7 is held by means of spring 32in an elevated position, as indicated by the dotted line a and there is :free connection between all conduits 20 and main discharge conduit 16. If the discharge valve closing duct 31 is opened. a low pressure will be created underneath the valve member 7, so that the latter is depressed against spring 32 by the pressure existing in chamber 21 above valve 7. Thus a connection is provided from the steam conduit overwhose opening the valve is placed (in this case via boring 40, opening 8 into lconduit 31 and these conduits (5, 8 and 31) are thereby tightly sealed against the chamber 21. As soon as-the blowing out process is finished, the discharge valve is closed, the

pressure in 31 builds up through the stean supply from conduit 5 and spring 32 will lift the valve member 7 upward, thus consired conduit and the location be ixed from the outside by means similar to those shown the outside.

valve in Fig. 1) vand provides at the same and described with reference to Fig. 2, so

that the position of opening 8 with regard 2 0 can be seen from` to the' individual tubes Figs. 7 and 8 show still'another form of this combination valve which, as illustrated, answers the purpose of collecting the fluid discharged by a number of conduits to be discharged, into a service. main 16 (such as time for connecting each of the individual incoming conduits withsludge blow-out means. This device consists of a main valve body and a piston shaped selector element 57, provided with a stem portion 57a, which leaves an annular space around the restricted portion. Thls stem' is provided with a longitudinal passage `58 vwhich corresporlds to the discharge passage 8 of the valves shown in Figs. 2, 3^, 5 and 6. The piston 57 is provided with transverse assages 44which con- :40,

neetthe piston perip ery with the central .longitudinal passage 58'; The piston 57 is further provided with a number of longitudinal'passage's 45shown in dotted lines in all positions towards the left, this passage remains -1n communication with a discharge (see also Fig. 8) which connect the annular space-60 around the iston neck with the space in front of the piston head. The rear end of piston 57 has an oblique passage 46 connecting the longitudinal passage 58 withy the annular space around the piston rod 61 by which the pliston is'operated. In the extreme right and piston position shown, and

assage 62 provided in the casing wall. v'.lhe oiler tubes 20d each terminate in casing 50 in a peripheral groove 63 so that when piston.

head 57 registers with one 02E these grooves for instance that of tube 20 as shown, that particular tube becomes-connected with piston passage 58 and thus blows its sludge through discharge 62. If the piston 57 is* `shifted to register with' tube 20, that tube will blowout 4its sludge, but tube 20l is now able to resume vthe normal fluid` supply to main 16 through the longitudinal passages 45' liftingsaid selector from said inleads in the piston head 57. Thus any of the boiler vtubes may be selectively blown out without interfering with the fluid supply .of the others. During, normal operation of the boiler none of the tubes is blown outand in that case piston head 57 is positioned midway between two grooves 63.

I claim: v

1. A multi-way sludge valve, comprising a valve casing -having a plurality ofinleads disposed at its bottom for connecting a plu- -necting any of said inleads'with said outlet,

means for operating said selector from the exterior of said casing to select the conduit to be flushed, spring operated means for automatically lifting said selector from said inleads when said dischargevalve is closed, to permit free Huid passage from all inleads through said casing, the uid pressure in said casing pressing said selector against the casing bottom when .the discharge valve is opened, thereby directl connecting the desired inlead with said dischargeoutlet.

2. A multi-way sludge valve, com rising a lvalve casing having a plurality o inleads disposed at its bottom for connecting a. plurality of conduits with said casing, means for conducting the Huid supplied by the conduits awayfrom the casing, a sludge discharge outlet also arranged in the bottom, af discharge valve connected to said outlet for closing it when a normal fluid flow through said casing is desired, a selector on the casing -bottom for connecting any of said inleads with said outlet, means for operating said selector from the exterior of said casing to select the conduit to be flushed, and means for when said discharge valve is closed.

In testimony whereof I ailix my signature.

MARTIN EULE.

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