US1971020A - Boiler cleaner - Google Patents

Description

Aug. 2.1, 1934.

N. L. SNOW 1,971,020

BOILER CLEANER Filed Sept. 28, 1931 2 Sheets-Sheet 2 INVENTOR.

ATTORNEY.

Patented Aug. 21, 1934 1,971,020 BOILER CLEANER Norman L. Snow, New Canaan, Conn., assignor to Diamond Power Specialty' Corporation, Detrolt, Mich., a corporation of Michigan Appiication september 2s, icsns'efin No. 565,437

13 claims. (01; `12a- 392) '1Q invention also embraces means for cooling the nozzled tube, this being particularly applicable in those cases where the tube extends adjacent therboiler surfaces in regions of high tempera-v ture. 4 l X.

Other objectsand advantages of the invention will become more apparent as the followingdescription proceeds, particularly when reference is had tothe accompanying drawings, wherein;r

Figure 1 is a side elevation of a boiler cleaner constructed in accordance with the teachings of the invention, applied to a tubular` boiler o conventional construction;

A,FigureZ is an enlarged detail of the connection ,between the second cleaning fluid pipe and its supply elbow; f

Figure 3 is an alternate arrangementof the detail shown in Figure 2 Y. Figure '4 is an enlarged detail of the control valve for the second cleaning substance; l

Figure 5 is a view partly in sectionl and partly in elevation, along the line 5-5 of Figure 1V', with A.the bell crank mechanism misplaced, to "show thepperating mechanism for the aforementioned control valve;

Figure 6 is a View in fied control `Valve for stance. V. j

Referring then particularly to the drawings wherein like reference characters designate corelevation showing a modi-V the second cleaning subfo responding parts throughout all views, the

numeral- 1 designates an automatic Valved boiler cleaner operating head of conventional construction. The head is supported fromboiler wall 4 by iioater 7 xed in'turn tov wall box 6 l mounted in opening 5 in the side wall. Element 2jprovided with nozzles Sextends adjacent the boiler tubes 3 rom which itmay be supported in any desired manner not shown. The nozzles 8 correspond substantially in number tothe spaces adjacent Athe aforesaid boiler tubes 3.

Element 2 is joined by coupling 2'7 to swivel tube 39'which is rotatably journalled inthe Voperating head. Fixed tothe swivel tube 39 is the large gear A11 adapted to'be actuatedby .pinion 10 which, in turn, may be actuated throughA suitable connections by the sheave wheel 9,. Mounted on the face of gear 11 isfthe cam 12 adapted upon rotation to movelthe trigger-14 to depress valve stem 17, opening Valve 16, thus admitting a cleaning fluid such as 50 air orsteam from the supply line 38 to the head and ythence to the elementl2. y'The trigger 1li is'supported in the clevis 15 formed integrally with thegooseneck 13. In my prior application; Serial 692,094 meansare shown `for .automatically admitting to the boiler cleaner operating head a second cleaning fluid-such as water;` possessing properties-:different from the cleaning viuid ordinarily used, "such, as steam'or air; The'presen't invention` utilizes this. basic principle,` employing a different mechanism and providing means for insuring ydistributionof said second 'cleaning substance uniformly `along the Vlength of the element. o s At vthe upper portion of the gooseneckV 13 is provided an enlargement 18 to one end` of which is Xed an'elbow 19 through which thel second cleaning'substance'is supplied; Valve 22 is proyided in the 'supply line, this-valve being automatically actuated upon rotation of .thel ele ment a ,predetermined amount, toA supply the second cleaning-substance. -A conventional lValve 25-for-manual operation Ais iurther provided inthe supply-line 26 whereby the second cleaning. substance may be manually controlled as""desired. j

As best showninFigure 2, a second. nozzled l-tube20 is iixed as by'w'elding toelbow 19. This nozzled tube 20 extends centrally of the element 2, Vnozzles 21 ybeing*provided along*4 its length for the discharge ofthe second cleaning substance. Tube 20 `may be supported approximatelycentrallr ,0f element 2 asrbyloosely tting spdersnot shown Y Operation oiv valve 22 A.may be eiiectedby trigger 14'as best shown in Figure 5, this trigger thus lserving to control the supply both of the principal cleaning substance. and the second cleaning substance. Bell crank mechanism l0 is jtted to. extension 32 ci"vv triggerl 14 and may be actuated by movement of the trigger 'to movejtheyalve stem 23 laterally away :from the valve seat 24 as shown in-Figure l to admit the second cleaningsubstance. y In' thewarr-angement just described the distributing pipe for the second cleaning substance is held statonarywhile thenozzledelement 2 ism-tats@ aroundA it, l the .preferable Position Qi the inner tube 20 is such that the nozzles 21 point upwardly.

In Figure 3 is shown a connection of tube 20 on the elbow 19 such that the distributing pipe 20 may rotate with the element 2. Spider 28 is attached as by welding to tube 20', this spider being held by set screw 29 .passing through coupling 27 between the element 2' and the swivel tube 39, both of which are suitably secured in said coupling.

The invention, moreover, resides in the provision of means for supplying through the arrangement hereinbefore described a cooling medium such as water tothe boiler cleaner element. The cooling medium such kas water may be supplied in amounts depending upon the location of the boiler` cleaner element and the temperature to which it is exposed.

By reference to Figure 4 an auxiliary valve port 31 will be noted with which valve stem 30 co-operates. This auxiliary valve provides means to admit to the boiler cleaner element a regulable supply of water at all times.

Thus by manipulation of valve stemk 30 Water may be admitted to the boiler cleaner element in an amount sumcient to cool the boiler cleaner element to a temperature where it will live satisfactorily in any given location. It will. be found convenient in many cases to admit to the element water in just suicient amount to Vbe completely evaporated in the boiler cleaner element without flow of water therefrom.V

In Figure 6 is shown an alternative arrangement of the control valve for the cooling fluid whereinthe auxiliary valve 35 is locatedina by-pass line 33Y around the main `body of the valve 22. This auxiliary valve may. be controlled by thermostatic element shown at 36 which element is actuated by thermometer 34 which may be conveniently located in the breeching or uptake 37 from the boiler furnace. The purpose of this arrangement is to prevent the flow of cooling fluid, such aswater, through the by-pass and into the boiler .cleaner element 2 at periods when the boiler is banked or off the line. Under these circumstances the ternperatures in the uptake 37 will be much lower thanwhen the boiler is in operationgthe thermostatic control being so arranged as to close the valve 35Aunder these low temperature con-'- ditions and to open it under higher .temperature conditions in the breaching when the boiler is normally operating. Automatic means .are thus provided for insuring the shutting off of the cooling fluid supply to the blower element when the boiler is -notinnormal operation..

For the sake of convenience the invention has been described as' comprising a boilerV cleaner adapted for cleaning parts of a boiler. It will be apparent, however, that the invention may be incorporated in devices for cleaning similar types of apparatuses, and it is to be therefore understood that the term fboiler wherever used in the specication or claims is to be construed as meaning a heat transfer apparatus or fluid heater of any character, while the term boiler cleaner is to be'construed as meaning a cleaner for any such apparatus.`

YWhile the invention has been described with considerable detail, it is to be clearly under-l stood that the description is for the purpose of illustration only and is not 'definitive ofthe limits ofthe inventive idea. The right is therefore reserved'to make such changes in the details of construction vand'arrangement of parts -f as will fall within the purview of the attached claims.

What I claim as my invention is:

1.,In a boiler cleaner, a source of supply of cleaning fluid, a rotatable tube connected to said source of supply of cleaning fluid and provided with nozzles for discharging said cleaning fluid, a source of supply of a second fluid, means to conduct said second fluid to said rotatable tubeincluding a valve provided with two ports, one of said ports being normally open, and means dependent upon rotation of the nozzled tube for uncovering the other of said ports.

2. In a boiler cleaner, a source of supply of cleaning fluid, a tube provided with nozzles for the discharge of said fluid, a source of supply of a cooling fluid, means to conduct said cooling fluid to said tube including a valve, and means dependent upon the temperature in said boiler setting for controlling the actuation of said valve.`l v

3. In a boiler cleaner, a source of supply of cleaning fluid, a rotatable tube provided with no'zzlesefor discharging said cleaning fluid, and means to supply a second fluid having cleaning and cooling properties to said tube including two valved openings, one of which is automatically controlled by the rotation of said tube andthe other of which is constantly open to insure a constant supply of Vsaid second fluid-tothesaid tube. i 4. In a fluid heater cleaner, a blower element having nozzles for discharging a cleaning fluid, means for admitting a cleaning fluid to said blower element for discharge therefrom, means operating to admit a second fluid to said blower element in timed relation to the admission of theY cleaning fluid to the blower element, and means operable independently of the admission of 'cleaning fluid to said blower elementi for maintaining a constant supply of said second mentioned fluid to said blower element.

5. In'a fluid heater cleaner, a blower element having nozzles for discharging a cleaning fluid, a valve controlling the admission of cleaning fluid to said `'blower element, a source' of supply of a second fluid having cleaning and cooling properties,means operating upon the openingA of said valve to admit a substantial quantity of said second fluid to said blower element for discharge therefrom with the cleaning fluid, and means operable independentlyof the actuation of said valve for admitting said second mentioned fluid to the blower element irrespective of the supply of cleaning fluid to the element.A

6. In a fluid heater cleaner, a movable blower element provided with nozzles for discharging a cleaning fluid, means for supplying a cleaning fluid tosaid blower element, a source of supply ofa second fluid, a valve for controlling the ad? mission of lsaid second fluid tothe blower element, means for actuating said valve in timed relation to the movement of the blower element, and means providing a by-pass around said valve to insure a constant supply of said second fluid to the blower element irrespective of the movement thereof.

'7. In a boiler cleaner, a source of supply of cleaning fluid, a tube provided with nozzles for discharging said cleaning fluid, and'means to apply a liquid to the interior of said nozzled tube to cool the same by evaporation .of the liquid, said means operating in dependence upon the temperature of the boiler'gases;

8, 1n a fluid heater cleaner, a blowerelement,

means for supplying cleaning fluid to said blower element under suicient pressure to effect a cleaning operation upon discharge of the cleaning fluid from the blower element, and means operating during the intervals when the cleaning fluid is not being supplied to the blower element to discharge a cooling fluid against said blower element at points throughout the length thereof in such a manner that a substantial portion of said blower element is contacted by said cooling fluid.

9. In the fluid heater cleaner, a blower element, means for supplying cleaning fluid to said blower element under sufcient pressure to effect a cleaning operation upon discharge of the cleaning liuid from the blower element, and means disposed within said blower element operating during the intervals when the cleaning fluid is not being supplied to the blower element to discharge a cooling fluid against said blower element at points throughout the length thereof in such a manner that a substantial portion of said blower element is contacted by said cooling fluid.

l0. In a fluid heater cleaner, a blower element, means for supplying a cleaning fluid tosaid blower element under sufficient pressure to eiect a cleaning operation upon discharge of the cleaning fluid from the blower element, and means including a nozzled tube disposed within said blower element operating during the intervals when the cleaning fluid is not being supplied to the blower ing fluid against said blower element at points throughout the length thereof in such a manner that a substantial portion of said blower element is contacted by said cooling fluid.

ll. rIhe method of cooling a fluid heater cleaner tube which is subjected to high temperature during the intervals when said tube is not discharging cleaning fluid which consists in discharging into contact with said tube just enough liquid to be completely evaporated by the heat of the tube.

12. The method of cooling a fluidr heater cleaner tube which is subjected to high temperaelement to discharge a cool- Y ture during the intervals when the tube is not W discharging cleaning iluid which consists in discharging into contact with the interior of the tube just enough liquid to be completely evaporated by the heat of the tube.

13. The method of cooling a fluid heater cleaner tube which is subjected to high temperature during the intervals when the tube is not discharging cleaning fluid which consists in discharging into contact with said tube at spaced points throughout the length thereof just enough liquid to be completely evaporated by the heat of the tube. i

NORMAN L. SNOW.

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