Mechanical face seal

Patent metadata

Field	Value
Publication number	US-9951872-B2
Application number	US-201514744263-A
Country	US
Kind code	B2
Filing date	Jun 19, 2015
Priority date	Jun 19, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A mechanical face seal includes a seal ring, the seal ring including an inner circumferential surface, an outer circumferential surface, and a generally annular body extending between the inner and outer circumferential surfaces. An annular flange projects radially from the annular body to an outer perimeter of the flange and a sealing band is on the annular flange. A slot may extend radially into the seal ring from the inner circumferential surface of the seal ring. A cooling channel may be in and extend generally circumferentially through at least one of the annular body and annular flange.

First claim

What is claimed is:

1. A mechanical face seal ring, comprising:
an inner circumferential surface;
an outer circumferential surface;
an annular body extending between the inner and outer circumferential surfaces;
an annular flange projecting radially outward from the annular body;
a sealing end of the mechanical face seal ring including a sealing band, wherein the sealing band is positioned on the annular flange adjacent to an outer perimeter of the annular flange projecting radially outward from the annular body;
an internal cooling channel enclosed within the mechanical face seal ring and extending along a path which passes entirely around and throughout a circumference of the mechanical face seal ring through the annular body and the annular flange of the mechanical face seal ring;
the internal cooling channel including one or more first portions and one or more second portions;
wherein each of the one or more first portions of the internal cooling channel are positioned at a location within the annular flange proximate to the sealing band; and
wherein each of the one or more second portions of the internal cooling channel are located within the annular body and intersect with the inner circumferential surface of the annular body at one of each of a plurality of openings spaced around a circumference of the inner circumferential surface and passing radially inward through the inner circumferential surface of the annular body and into the internal cooling channel through which a flow of fluid is received within and through the internal cooling channel to cool the mechanical face seal ring during operation.

2. The mechanical face seal ring of claim 1 , wherein the path at which the internal cooling channel extends through the annular body and the annular flange of the mechanical face seal ring is a serpentine path.

3. The mechanical face seal ring of claim 1 , wherein the sealing end of the seal ring includes a taper band located adjacent the sealing band and an area where the sealing band merges with the taper band, and wherein each of the one or more first portions of the internal cooling channel are positioned within the annular flange at a location within the annular flange adjacent to the area where the sealing band merges with the taper band.

Assignees

• Caterpillar Inc

Inventors

• Thorson Timothy Arthur
• Turczyn Dennis Michael
• Marchione Thierry Andre

Classifications

• F16J15/344

  the pressing force being applied by means of an elastic ring supporting the slip-ring · CPC title

• F16J15/3404 Primary

  and characterised by parts or details relating to lubrication, cooling or venting of the seal · CPC title