US1576245A

US1576245A - Locomotive

Info

Publication number: US1576245A
Application number: US568823A
Authority: US
Inventors: Henry B Oatley; William E Woodard
Original assignee: Superheater Co Ltd
Current assignee: Superheater Co Ltd; Superheater Co
Priority date: 1922-06-16
Filing date: 1922-06-16
Publication date: 1926-03-09
Anticipated expiration: 1943-03-09

Description

March 9,1926. 1,576,245

' I H. B, OATLEY ET AL I LOGOMOTIVE Filed June 16, 1922 p v 1' 2 Q9 1 8 ATTORN EY INVENTORS Patented Mar. 9, 1926.

UNITED STATES 1,576,245 PATENT OFFICE.

HENRY B. OATLEY, or FLUSHING, AND WILLIAM E. WOODARD, or roREs'r HILLS, new YORK; SAID OATLEY ASSIGNOR on ALL 111s menu: 'ro THE sUPERHEA'rEn COMPANY, OF NEW YORK, N. Y.

LOCOMOTIVE.

Application filed June 16, 1922. Serial No. 568,823.

To all whom it may concern.

Be it known that we, HENRY B. OATLEY, citizen of the United States, and resident of Flushing, Long Island, New York, and \VILLIAM E. \Voomnn, a citizen of the United States, and resident of Forest Hills,

Long Island, New, York, have invented certain new and useful Improvements in Locomotives, of which the following is a specification.

Our invention relates to boilers and concerns itself particularly with the combination of boilers with steam separators, the separator being either located in a steam dome or in a steam drum, or being otherwise similarly intimately associated with the boiler. It has for its object an improved arrangement whereby the water separated out from the steam may be readily disposed of without the use of drips, check valves, etc. i

The invention is illustrated panying drawing wherein Fig. 1 shows a portion of a boiler of this type in longitudinal central section with our invention installed; Fig. 2 being a section on line 22 of Fig. 1 looking in the direction indicated by the arrows.

The boiler shown by Way of illustration is a locomotive boiler of an ordinary construction, and includes'the barrel 1 extending forward from the fire box. The fire box is limited in the usual way at the front by a tube sheet 2, at the rear by the back sheet 3, and at the top by the crown sheet 4. Extending in the usual way through the fire box is a series of arch tubes, only one of which is shown, 5. This connects the front water space 6 with the back water space 7. The greatest proportion of steam in boilers of this type is generated immediately above v the crown sheet and in close proximity to the tube sheet 2. All of the steam is collected in the dome 8 whence it is conducted forward tothe steam chests by means of the dry pipe 9.

For a number of reasons the steam dome matter what type of separator is used for this purpose, some means must be devised for getting rid of the water collected. The

in the accomentrance to the dry pipe 9 is at best only a very small distance above the water level of the boiler and in the modern large types of locomotives this elevation is reduced to an extremely small amount. When the main throttle to the engine is open the pressure at the entrance of the dry pipe 9 falls below that prevailing in the body of the boiler, this difference amounting in-some cases to possibly several pounds. If the pipe intended to carry away the water collected in the separator opens directly into the body of the boiler water, the water will back up in this pipe due to the pressure difference spoken of, and flood the separator and be carried into the dry pipe. To place a. non-return check valve into the pipe mentioned, which opens to allow water to drain out of the separator but does not permit the backward flow referred to, it will be found that within a short time the check valve becomes inoperative or at least partly so, due to encrustation or collection of sediment or'other causes.

Our invention is intended to provide'for the removal of the water from the separator by the novel and eflicient means described below.

In dome 8 we located a separator whic may be of any desired and appropriate type but which we show by way of illustration to be made up of the annular sheet 10, thelower conical plate 11 which is connected to the dry pipe as shown, and a second annular sheet 12 between the first one and the dry pipe and secured to the top of the steam dome as at 13. This second annular sheet preferably has at its lowerend an upwardly turned flange 14: forming a trough 15. To enter the inlet of the dry pipe 9 steam must pass over the upper edge of sheet 10, downward between the two

sheets

10 and 12, around the lower end of sheet 12, upward between this sheet and the dry pipe and so into the dry pipe. In its passage as just described it impinges against the sheets and dry pipe and particles of water will collect on them and be gathered in the trough 15 and in the space 16, whence it will be drained by the two

pipes

17 and 18. These two pipes unite into the single pipe 19.

Instead of providing this pipe 19 with a andw pipe 19 to a point in the boiler, where there is a rapid circulation or movement of water ere anejector-like or entraining effict may be obtained. By way of illustration t e of t e arch tubes .5, the circulation of water through these arch tubes being very rapid. For conveniencewe show the pipe 19 carried out throu h the wall of the boiler at point 20 and rought around the side to ,the plug 21 into which it is screwed. A

separate length 22 is screwed into this same plug so that in effect 22 forms a prolongation of 19. The length 22 is extended a short distance into the arch tube 5. It will be understood that the particular way in which we extend the pipe 19 so that its end reaches the desired point is to be taken only by way of illustration. As above stated, the point selected for ending pipe 19 is also only illustrative. It is suflicient to come within the spirit of our invention if this end is placed at any point where there is rapid Cit -(1211118171011. f 1 1 d :g g- 8' L 1e pu ose o acing tie en pipe 19 as describ gd is to produce an induced flow from this ipe by means of the water surrounding 1t. example, the water entering the arch tube will induce a flow from pipe 19 and thus drain the trough and space 16 and prevent any back flow of water to these points.-

While we have described the invention inconnection with a locomotive boiler, it will oint selected is at the entrance of one In the form illustrated, for

beobvious that itsuse is not in any way restricted to boilers of this type. It is on the contrary, applicable to and of use in connection with almost any type of boiler. Wherever the separator is, on account of limitation in headroom or for some other reason, located at only a slight elevation leg; a circulating tube connecting a high point of the former with a low point of the atter and extendingv through the firebox; and a pipe leading from the water collecting space of the separator through the outer sheet of the front water leg and a short distance into the circulating tube; said pipe being spaced from the walls of the circulating tube.

2. In a boiler of the locomotive type, the combination of a separator in direct communication with the steam space; two water legs; a circulating tube connecting the two Water legs and extendin throu h the firebox; and a pipe leading Irom the water-collecting space of the separator and extending into the inlet end of the circulating tube.

' HENRY B. OATLEY.

W. E. WOODARD.