Indicator Assembly

This invention relates to an indicator assembly, and more particularly to an indicator assembly for the visual observation of the operational setting of a fluid handling apparatus, such as a valve.

Fluid handling apparatus, such as butterfly valves, have been provided with external indicators permitting visual observation of the relative operational positioning of the disk of the valve wherein the rotatable spindle to which disc is mounted is actuated through a driven gear and a driving worm gear mounted on a shaft connected to a handle wheel of the valve assembly. Generally, visual observation of the operational positioning of the spindle of such a valve assembly requires relatively close visual inspection, e.g. 5 to 10 feet, and in particular from that side of the assembly valve on which the driving gear therefor is disposed. Thus, in the event of a disabling condition of the plant in which such valve assembly is included, it would be necessary to require operating personnel to come into close proximity to each such valve assembly to ascertain operational setting thereby possibly exposing such operating personnel to dangerous and hazardous situations.

An object of the present invention is to provide a novel indicator assembly for fluid handling apparatus to permit instant visual indication of the operational setting thereof.

Another object of the present invention is to provide a novel indicator assembly for fluid handling apparatus to permit instant visual indication of the operational setting thereof from remote distances.

Still another object of the present invention is to provide a novel indicator assembly for fluid handling apparatus to permit instant visual indication of the operational setting thereof from substantially any angle of observation.

A further object of the present invention is to provide a novel indicator assembly for process apparatus to permit instant afar visual indication of the operational setting thereof to reduce operating personnel exposure to potential dangerous and/or hazardous conditions.

A still further object of the present invention is to provide a novel indicator assembly for fluid handling apparatus to permit instant visual indication of the operational setting thereof and comprised of no external moving parts which may be effected by the surrounding environment.

Yet a further object of the present invention is to provide a novel indicator assembly for fluid handling apparatus to permit instant visual indication of the operational setting thereof conveniently retrofitted on such fluid handling apparatus.

These and other objects of the present invention are achieved by an indicator assembly comprised of a housing member mounted to the fluid handling apparatus and an indicator member mounted for rotation within the housing member operationally associated to a moving member of the fluid handling apparatus wherein the housing member is provided with transparent sectors permitting visual observation of the indicator member and wherein the indicator member is provided with colored sectors to visually cooperate with the transparent sectors of the housing member to indicate operational modes of the fluid handling apparatus, as more fully herein disclosed.

A better understanding of the present invention as well as other objects and advantages thereof will become apparent upon consideration of the detailed disclosure thereof, especially when taken with the accompanying drawings, wherein

FIG. 1 is an elevational view, partially cut away, of the indicator assembly of the present invention mounted on a fluid handling apparatus;

FIG. 2 is a side view, partially cut away, of the indicator assembly of FIG. 1;

FIG. 3 is an enlarged partial cross-sectional view of the indicator assembly of the present invention; and

FIG. 4 is an exploded view of the major components of the indicator assembly of the present invention.

Referring now to the drawing, there is illustrated an indicator assembly of the present invention, generally indicated as 10, mounted on an actuator assembly associated with and driving a valve assembly, generally indicated as 12 and 14, respectively.

The indicator assembly 10 is comprised of a cylindrically-shaped housing member in which disposed for rotation there is positioned a cylindrically-shaped indicator member, generally indicated as 16 and 18, respectively, referring particularly to FIG. 4. The cylindrically-shaped housing member 16 is formed by a cylindrically-shaped side wall 20 enclosed by a top end wall 22 and including a disc-shaped outwardly-extending mounting ring member 24 including mounting orifices or holes 26 formed opposite the top end wall 22 thereof. The cylindrically-shaped indicator member 18 is formed of a cylindrically-shaped solid body member 28 including a rectangularly-shaped chamber 30 in an end portion thereof, more clearly shown in FIG. 3.

The indicator assembly 10 of the present invention may be formed of any suitable material given the prerequisite visual characteristics and conditions to which the indicator assembly 10 may be subjected during use. Generally, the housing member 16 and indicator member 18 of the indicator assembly 10 are formed of a thermoplastic material, such as plexiglass, polycarbonates or the like; materials exhibiting resistance to high temperatures and excellent mechanical and chemical properties. Preferably, the housing member 16 is formed of transparent or translucent thermoplastic material for visual acuity, as will become apparant to one skilled in the art.

As herein above mentioned, the respective parts of the indicator assembly 10 are provided with selectively-deposited layers of a paint or pigment material, decal or the like, referring more particularly to FIG. 4. Selective deposition of the paint or pigment material, is preferably coated on the interior surface of the side wall 20 of the housing member 16 divided into an hemicylindrically-shaped upper portion and a hemicylindrically-shaped lower portion, generally indicated as 32 and 34, respectively, however, processing limitations may require coating on the exterior surface thereof. The paint or pigment material in the upper portion 32 is deposited about opposed radial surface portion 36 of the inner surface of the side wall 20 thereby leaving the remaining opposed surface 38 transparent, with the paint or pigment material in the hemicylindrically-shaped lower portion 34 being deposited about opposed radial surface portions 40 of the interior surface of the wall 20 thereby leaving the remaining opposed surface portions 42 transparent. The opposed radial surface portions 36 and 40 cover a radial slightly greater than 90.degree. thereby leaving the transparent radial portion 38 and 42 of a radial surface slightly less than 90.degree. as will be more fully hereafter understood. A plane (not shown) coaxially-disposed to the axis of the housing member 16 through a midpoint of each radial surface portions 36 of the hemicylindrically-shaped upper portion 32 is perpendicularly disposed to a plane (not shown) coaxially-disposed to the axis of the housing member 16 through a midpoint of each radial surface portion 40 of the hemispherically-shaped lower portion 34 of the housing member 16.

The indicator member 16 is divided for selective deposition of a paint or pigment material decal or the like into a hemicylindrically-shaped upper portion and a hemicylindrically-shaped lower portion, generally indicated as 44 and 46, respectively, with the upper and lower portions 44 and 46 being further divided in opposed 90.degree. radial surface sections 48 and 50, and 52 and 54, respectively, referring specifically to FIG. 4. A plane (not shown) coaxially-disposed to the axis of the indicator member 18 through a midpoint of the opposed radial surfaces sections 48 is perpendicularly-disposed to a plane (not shown) coaxially disposed to the axis of the indicator member 18 through a midpoint of the opposed radial surfaces section 50, as is a plane (not shown) coaxially disposed to the axis of the indicator member 18 through a midpoint of the opposed radial surface section 52 to a plane (not shown) coaxially disposed to the axis of the indicator member 18 of the opposed radial surface sections 54. The plane of the opposed radial surfaces sections 48 and the plane of the opposed radial surface section 54 are coplanar as are the plane of the opposed radial surface sections 50 and the plane of the opposed radial surface sections 54 of the upper and lower hemicylindrically-shaped portions 44 and 46, respectively.

Any color of paints or pigment material, decal or the like may be used. In his context, the color coding may reflex reference to the Ansi Standard for piping system, e.g. yellow-hazardous; green-liquid material slightly hazardous; blue-gaseous material slightly hazardous; and red-fire quenching. In the present invention a desired color of paint, for example yellow, is applied to the side wall 20 about surface portions 36 and 40 of the housing member 16. With a predetermined color configuration being selected for the fluid handling apparatus to which the present invention is to be mounted, e.g., all yellow to indicate a closed valve configuration and checkerboard to indicate an opened valve configuration, the required paint or pigment material is applied to the indicator member 18 to the opposed radial surface sections 48 and 52, i.e. yellow with a contrasting color of paint or pigment material, e.g. black being applied to the radial surface sections 50 and 54.

As illustrated in FIGS. 1 to 3, the indicator assembly of the present invention is to be associated with a valve assembly 14 under the control of a pneumatic actuator assembly 12. The valve assembly 14 is comprised of a valve housing 60 including inlet and outlet ends, 62 and 64, respectively, a valve disk 66 and a valve spindle 68 for mounting the valve disk 66. The valve housing 60 is formed with a valve spindle packing assembly, generally indicated as 70, to permit rotation of the valve spindle 68 underfluid tight conditions.

On the valve assembly 60, there is provided a bracket 72 for mounting the actuator assembly 12. The actuator assembly 12 is comprised of a cylinder housing 74 and a piston 76 mounted for reciprocal movement therein by a cylinder rod 78, and is provided with a fluid inlet line 80 and fluid outlet line 82. The cylindrical housing 74 of the actuator assembly 12 is provided with a valve rod 84, referring to FIG. 3, at an end portion thereof extending through the side wall of the cylinder housing 74 positioned for rotation about 90.degree. in bearing members (not shown) on an axis generally perpendicular to the axis of the cylinder rod 78. Arm members 86 are mounted on the valve rod 84 above and below the cylinder rod 78 and are connected to the cylindrical rod 78 by a pin member 88 disposed in a shaft 90 formed in the cylinder rod 78. A portion 92 of the valve rod 84 of the actuate assembly 12 extending downwardly through the cylinder housing 74 is mounted by a connecting element 94 to the valve spindle 68, as more clearly illustrated in FIG. 2. A portion 96 of the valve rod 84 of the actuator assembly 12 extending upwardly through the cylinder housing 74 is flattened for use as the means for connecting the indicator member 18 of the indicator assembly 10 to the pneumatic actuator assembly 12.

Referring now to FIG. 3, on the valve rod 84, there is provided a rectangular U-shaped member 98 disposed on the flatted portion 96 of valve rod 84 whereby the U-shaped member 98 is caused to rotate with rotation of the valve spindle 66 via the connecting element 92 and valve rod 84. Over the member 98, there is positioned the indicator member 18 of the indicator assembly 10, such that the the member 98 is disposed within the rectangularly-shaped chamber 30 of the indicator member 18. In FIG. 1, the valve disk 66 of the valve assembly 14 is disposed in an opened position within the valve housing 60. The indicator housing 16 is thereafter mounted, such as by screws 100, to the activator assembly 12 in a manner such that the radial surface sections 50 and 54 of the indicator member 18 are fully visible through the transparent or translucent portions 38 and 42 of the indicator housing assembly 12, as more closely illustrated in FIG. 1, to provide a checker-board visual representation of the positioning of the valve spindle 68 and thus the valve disk 66; i.e. the valve assembly 14 being in an opened mode.

In operation, referring now to FIGS. 1 and 3, the valve disk 66 and thus valve spindle 68 of the valve housing 60 being in an open position thereby permits a flow of fluid through the valve housing 60 from the inlet 62 to the outlet 64. In such operational position, the color of the paint of the radial surface sections 50 and 54 of the indicator member 18 (a color visually and significantly different from the color of the paint on the radial surface section 48 and 52 thereof), is visually observed through the transparent radial portions 38 and 42 of the housing member 16 thereby illustrating a checkerboard configuration indicative of an opened processing mode of the valve assembly 14.

By placing the inlet conduit 80 of the actuator assembly 12 in fluid communication with the downstream side of the compressor (not shown), places the chamber portion of the actuator cylinder 74 in fluid communication therewith to cause the cylinder piston 76 to be displaced to the right and thus the piston rod 78 to thereby cause rotation of the valve rod 84 through 90.degree. by rotation of the arm member 86. Rotation of the valve rod 84 correspondingly rotates through 90.degree. the valve disk 66 via the valve spindle 68 and connecting element 94 with concommitant counterclockwise rotation through 90.degree. of the indicator member 18 to thereby align the radial surface sections 48 and 52 thereof with the transparent radial portions 38 and 42 of the housing member 16 thereby to visually indicate, by essentially a one-color display, the representation that the valve disk 66 of the valve assembly 14 is in a position to prevent fluid flow through the valve assembly 14, as illustrated in FIG. 2 i.e. closed.

While the present invention has been described with reference to a two way valve, it is understood by one skilled in the art that the present invention may be used in other valve assemblies, e.g. a three way valve.

While the invention has been described in connection with an exemplary embodiment thereof, it will be understood that many modifications will be apparent to those of ordinary skill in the art and that this application is intended to cover any adaptations or variations thereof. Therefore, it is manifestly intended that this invention be only limited by the claims and the equivilants thereof.