US352378A - Surface-condenser - Google Patents

Description

(No Model.)

H. WARDEN.

'SURFACE coNDENsBR.

' Patented Nov. 9,- 1886.

UNITE STATES PATENT Fries.y

yPtnNnv WARDEN, or PHILADELPHIA, PENNSYLVANIA.

SURFACE-CONDENSER.

SPECIFICATION forming part of Letters Patent No. 352,378, dated November 9, 1886.

Application tiled June 19, 1885. Renewed August 23, 1856. `Serial No. 211,648. (No model.)

To @ZZ whom it may concern:

Be it known that I, vHENRY WARDEN, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Feed-Tater Heaters or Surface-Condensers, of which the `following is a specification.

One object of my invention is to so construct a tubed feed-water heater or surface-condenser that the desired expansion and contraction of the tubes Willbe permitted without the necessity of using stuffing-boxes or other expensive joints at the ends ofthe tubes, a further object being to provide simple and effective means d for relieving the heating-chamber from sediment or scum.

In the accompanying drawings, Figure lis a longitudinal section of my improved feed-water heater; Fig. 2, a transverse section of the same on the line 1 2, Fig. l; and Figs. 3 and 4, face views of tubesheets constructed in accordance with my invention. Arepresents the main casing or barrel of the heater, which is closed at the opposite ends by heads B B, and contains a number of tubes, D, thelatter being carried by opposite tubesheets F,which are confined between flanges a on the heads B B and similar flanges at the opposite ends of the barrel or casing A -of the heater.

The opposite heads of the heater have branches, to which are connected steam inlet and discharge pipes, so thatsteam entering one end of the casing passes through the tubes D and is discharged from the opposite, end, water being forced into the casing through a feedpipe, G, and discharged through a deliverypipe, H. In heaters of this class it is usual.

to adapt one end of each tube to astuffing-box carried by the tube-sheet, or to otherwise provide each tube with a yielding connection, or to permit movement of the entire tube-sheet in the casing. These methods of construction are expensive, and also objectionable on account of their tendency to permit leakage; and one ofthe objects of my invention is to provide a simple and inexpensive substitute therefor.

In-carrying out my invention the tube-sheet is corrugated throughout that portion which carries the tubes, these corrugations serving to stiften the central portion of the sheet and render the same so rigid that any movement of one part of the corrugated portion independently of another is impossible. For instance, in the tubesheets shown in the drawings, all that portion of each sheet which is within the outer corrugation, b, will. move as a unit in yielding to strains such as would be caused by expansion or contraction of thetubes D. As the outer portionof the sheet is confined to the shell or casing, however, a sufficient portion vof the sheet between the corrugation b and the outer edge is left plain to provide an elastudinal movement of the center portion of the the tubes. ,Close to the bottom of the casing extending al-most throughout the length of the pipe. When the passage through the projecting portion of this pipe is open, the pressure ot' water in the casing A will cause a flow through the slot and into and through the pipe to the outlet, so that any sediment which may be deposited in the casing at any portion of the same will be carried up into the pipe and will be discharged from the same. A similar pipe, g, slotted` on the upper side, is arranged close to the top of the casing A, the object of this pipe being-to carry off the scum which rises when the Water is heated to ahigh temperature.

In order that the incoming stream of water may not disturb the sediment deposited upon the bottom of the casing A, the inlet-pipe G is arranged at some little distance from the bottom ofthe casing; and to prevent anydisturbance of the scum the outlet-pipe H is located at some distance from the top ofthe casing, as shown in Fig. 2. A series of perforations may the latter is preferred. The construction and arrangement of th scum and sediment discharge pipes form no part of my present invention, but are shown me on the 2d day of November', 1885, Serial No. 181,620.

The corrugations in the tube-sheets F may be arranged in various ways without departing from the main" feature of my invention, the character of the corrugations depending in a great measure upon the arrangement of the tubes in the heater. For instance, in Fig. 3

tic ring, d, which yields to permit the longi-Y be formed in the pipes in place of the slot; but` and claimed in a separate application led bysheet, due to the expansion and contraction of Ais a pipe, f, which has in the under side a slot IoO I have shown zt tube-sheet in which the tubes are arranged radially, the tube-sheet being provided With circumferential and radial corrugations, while in Fig. 4 the tubes are arranged in vertical and horizontal rows, sind the corrugations are correspondingly arranged and cross each other at right angles.

It will be evident that my invention is applicable to surfaee-condensers as well as feed- Wztter heaters, and, if desired, the expansion tube-sheet may be arranged at one end of the tubes only, the opposite ends of the tubes being Iconnected to a rigid tube-sheet.

I therefore claim as my invention- 1. The combination ofthe casing and tubes of a feed-Water heater or su rface'condenser with a tube-sheet confined to the casing at the rim, said sheet having the portion which carries the tubes s'tiiened by corrugations, and having between thestilened port-ion and the rim an elastic expansion ring or band, as set forth.V

2. The Within-described tube-sheet for feed- Water heaters or surface-condensers, said tubesheet having a central portion stiffened by eorrugatlions lfind an outer plain portion, as specified.

3. The combination of the casing and tubes of a. feed-water heater or surfacecondenser with a tubesheet secured to the easing at the rim, and having a plain outer portion forminglr an expansionming, and a central portion stiftened by corrugations, this corrugated portion of the sheet being` bounded by a corrugation, b, as set forth.

In testimony WhereofI have signed my name to this specification in the presence of two subscribing Witnesses.

HENRY WARDEN. y

Witnesses:

WILLIAM F. DAVIS, HARRY SMITH.

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