US1689317A

US1689317A - Superheater

Info

Publication number: US1689317A
Application number: US68406A
Authority: US
Inventors: John A Barnes
Original assignee: Superheater Co Ltd
Current assignee: Superheater Co Ltd; Superheater Co
Priority date: 1925-11-11
Filing date: 1925-11-11
Publication date: 1928-10-30
Anticipated expiration: 1945-10-30

Description

Oct. 30, 1928.

J. A. BARNES surnnusnfifi Filed Nov. 11, 1925 IN VEN TOR.

OOOOOJ 000000 John A Barnes A TTORNE Y.

Patented Oct. 30, 1928.

UNITED. STATES JOHN A. BARNES, 0F CHAPPAQUA, NEW

YOBK, ASSIGNOR TO THE SUPEBHEATER COMPANY, OF NEW YORK, N. Y.

SUPERHEATER.

Application filed November This invention relates to superheaters and has r'or its purpose the protection of the tubular elements or units of such structures at times when the steam consuming devices which ordinarily are supplied with steam from the superheater are not drawing such steam.

The invention is illustrated in the accompanying single sheet of drawings. On these drawings Fig. 1 shows a Scotch marlne boiler in end view with a superheater equipped with my invention; Fig. 2 is a sectional yiew on line 2-2 of Fig. 1; Fig. 3 is a partial plan view of the boiler.

The boiler in which my invention is shown for illustrative purposes is as stated oi the Scotch marine type. It has a cylindrical shell 1, a front sheet 2, a rear sheet 3, the usual flue 4, combustion chamber 5 and flues 6-6 connecting the combustion chamber to the flue sheet 2. The grate (not shown) is in the flue 4 and the gases of combustion pass to the right as seen in Fig. 2 to the combustion chamber 5 and then forward (to the left, as seen in Fig. 2) through the fines 6 and then to the stack by means of the usual breeching (not shown). lVithin the lines 6-6 are located the tubular superheater elements 77. The ends of these elements are connected to the headers 8 and 9 respectively. The header 8 is supplied with live steam from the boller through the pipe 10, and delivers this sat.

urated steam to the tubular superheater elements. After flowing through these ele ments and thereby becoming superheated the steam is delivered to the header 9, from which it is carried to the point of use, such as the engine. All of this is an ordinary and well known arrangement. In service in which this type of boiler and superheater are used there is usually a main engine which runs with some intermissions and one or more 11, 1925. Serial No. 63,406.

location of the partition 10 will depend upon the relative amount of steam used by the auxiliaries and by the main engine respectively. If this partition 10 were solid then upon closing down the main engine the steam in those units opening to the left of the partition (as seen in the drawings) would be stagnant and very rapidly be heated to high temperature and no longer allord any protection to the superheater. Instead of being solid, however, the partition 10 has a small opening 13 in it. At times when the main engine is shut down and the auxiliaries are drawing steam from the end 12 there will be a flow of steam through this opening 13 mingling with the steam delivered by those units opening into header 9 to the right of partition 10. This flow which of course means flow through the elements or units opening into the header 9 to the left of partition 10 is suiiicient to protect these elements.

At times when both the main engine and the auxiliaries are at work there may be a slight flow from one side of partition 10 to the other depending upon whether the two are using the normal amounts of steam or not, but this slight flow is not at all objectionable.

Should it happen that the main engine is operating and all of the auxiliaries shut down those units opening. into header 9 to the right of division 10 are protected in a similar way as in the case first outlined above. The flow through opening 13 will in that case be from the right to the left and this flow which means 'a corresponding flow through the elements to the right of partition 10 will protect these elements.

What I claim is:

1. In apparatus of the class described, the combination of a superheater inlet header; an outlet header; tubular superheater elements the two ends of each of which are secured to the two headers respectively; the outlet header having two outlet connections; and a partition in the outlet header between the two outlet connections and in such position that some of the elements deliver steam to one side of it and the remaining ones to the other; there being a duct adapted to carry steam from one side of the partition to the other.

2. I11 apparatus of the class described, the

combination of a superheater inlet header;

an outlet header; tubular superheater elements the two ends of each of which are secured to the two headers respectively; the 10 outlet header having two outlet connections; and a perforated partition in the outlet header between the two outlet connections and in such position that some of the elements deliver steam to one side of it and the 15 remaining ones to the other.

JOHN A. BARNES.