US1798746A

US1798746A - Packing-ring retainer

Info

Publication number: US1798746A
Application number: US323952A
Authority: US
Inventors: Edward H Markley
Original assignee: Ingersoll Rand Co
Current assignee: Ingersoll Rand Co
Priority date: 1928-12-05
Filing date: 1928-12-05
Publication date: 1931-03-31
Anticipated expiration: 1948-03-31

Description

E. H. MARKLEY PACKING RING RETAINER Filed Dec. 5. 1928 March 31, 1931.

INVENTOR. ZHMazJ: 26

H1}? ATTORNEY.

Patented Mar. 31, 1931 urrsn STATES PATENT oFFIcE EDWARD H. MARKLEY, OPE EEASTOIE, PENNSYLVANIA, AESIGNOE TO INGERSOLL-RAND COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY PACKING-RING RETAINER.

Application filed December 5, 1928. swarm. 323,952.

This invention relates to tube packing and more particularly to a retainer for packing rings in the tube sheet of a condenser, boiler, evaporator, or the like. In devices of this nature, and particularly in evaporators and in condensers where salt water is used as a cooling medium, it essential that there be no leakage of fluid through the tube sheet and accordingly considerable attention has been directed towards the provision of an efficient packing between the ends of the tubes and the tube sheets.

Heretotore it has been customary to thread a ferrule into the tube sheet around the tube end but this operation has the decided disadvantage of being costly and laborious. Accordingly, it is an object of the present invention to provide a packing ring retainer that is inexpensive to manufacture and which, at the same time, may readily be positioned between the tubes and the tube sheets to prevent leakage past the tubes through the tube sheet.

A still further object of the invention is to provide a retainer that will at all times remain in position against the packing and which may readily be tightened should occasion demand it.

A still further object of the invention is to provide an effective packing means for tubes that will permit the tubes to be positioned closely together to present a greater condensing 0r evaporating surface.

lVith these and other objects in view, which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts to be more fully described, illustrated and claimed.

In the accompanying sheet of drawings, forming a part of this specification, like characters of reference are employed in all of the view to designate like parts throughout, and;

Figure 1 is a sectional view taken vertically through the tube sheet of a condenser, boiler or the like, and

Figure 2 is a sectional View taken along the line 22 of Figure 1.

Referring now to the drawings, the tube sheet is shown at 10 and this sheet is provided with a plurality of tube holes 12 adapted to receive the ends of the tubes 14. Each tube hole is recessed as at 14 and suitable pack i ing material 16 is inserted in the recesses between the tubes 12 and the sheet 10 to prevent leakage of cooling fluid past the tubes.

In order to compress the packing and retain the same firmly in position between the tube sheet 10 and the tubes 12 there is provided a plurality of split retainers 18. These retainers are formed of sheet material. They are rolled into cylindrical form to fit over the ends of the tube and are of somewhat smaller diameter than the recesses 14'. These retainers are adapted to take the place of the ordinary threaded ferrules that screw into the tube sheet around the tubes. Each of the retainers 18 is split as at 20 to allow for expansion of the tube and each is provided with a plurality of spaced resilient ears 22 formed by cutting or punching the blank material. The cars have laterally extending portions 24 and the free ends of the portions 24 are in the form of arcuate gripping edges 25 which correspond to the curvature of the recesses 14 the walls of which they engage to lock the retainers fixedly in position.

In actual operation when the tubes are being positioned in the tube sheet, the retainers are forced into the recesses 14; and when in this position they may be driven against the packing with a sledge or the like. The cars 22 being sharpened will bite into the tube sheet and there is little likelihood of the re tainers working their way loose. Should at any time the packing become compressed due to normal usage it is merely necessary to again tap the retainers further into the recesses 14 against the packing material and there is no necessity for removing the retainers.

I claim:

1. In combination with a tube sheet having a tube hole and a tube extending into the tube hole, of a packing disposed in the hole about the tube, a cylindrical metal strip disposed in the hole to compress the packing, resilient protuberances on the strip and extending exteriorly thereof, and gripping edges on the protuberances corresponding to the curvature of the hole and adapted to engage the tube sheet at points along the length of the hole to retain the strip fixedly in the hole.

2. In combination with a tube sheet havg a ubehol md a, tubeex endingn th hole, Ef a packing. disposed in the hole about the tube, a cylindrical metal strip disposed in the hole to compress the packing, a plurality of i. resilient members integral With the strip, mud gripping edges 011 the resilient members engaging the wall of thehgle to retain the strip fixedly in the hole, said gripping edges being of a cuate shape to cnrre spond to the curvature o'f'the hOle.

In tes mony whereq 'I ha e sig ed this application. v

EDWARDH-