US1939881A - Pressure regulator - Google Patents

Description

Dec. 19, 1933. R. M. DECKER PRESSURE REGULATOR Filed Jan. 6, 1930 INVENTOR .D ecker BY 4 ATTORNEY WITNESSES Patented Dec. 19, 1933 UNITED STATES PATENT orricr.

PRESSURE REGULATOR Rassellas M. Decker, Anderson, Ind.,-assignor of one half to Fred M. Decker, Anderson, Ind.-

Application January 6, 1930. Serial No. 418,927

2 Claims. (01. sozz This invention appertains to improvements in an opening at the center of the partition 15 toward pressurevregulators generally, and has for its, the outlet end of the casing part, is a chamber main object to provide an extremely simple but 16 having upper and lower horizontal wall pordurable and eflicient construction and arrangetions in which alined openings are formed.

, 6 ment of parts, wherein the automatic actuating The upper edge of this casing part 10 is formed 9; 7

means for the pressure controlled valve will operto provide an outturned flange 17 on which a top ate with greater smoothness and much less strain Wall or divisionplate l8 and an upper casing part under'sudden and otherwise wide variations in 10 are'secured in super-imposed relation by pressures than has heretofore been the case in means of suitable fastenings or bolts 19; the edge 10 known types of automatic regulators. of the lower open side of the upper casing part Another object of the invention residesinthe being likewise outwardly flanged, as at 17. provision of an actuating means for automatic The body portion ofthe upper casing part 10' is pressure regulator valves which is cushioned in its preferably of an exterior and interior diameter operative movements'by the cooperation thereequal to that of the lower casing part 10, so that 15. with of a body of liquid to .obtain'the desired the casing in its entirety is generally of cylin- 0;

smoothness of operation and freedom from drical form when set up andready for use; strains as aforesaid withoutin any way affecting An' pening .iS r d Centrally 0f the division the required responsiveness thereof to variations p at 8, in e h the Centers of the Openings of pressure. l in the top and bottom walls of the chamber-16,?

80 A further object of the invention is to provide and a second opening is provided in the top 75: an actuating means for the control valve of a Wall Of the pp Casing p in line with pressure regulator which; will operate with a other'of said openings in order to receive theregreater freedom from necessity of attention, ad.-' through a valve stem formed of a lower portion 20 justment and repair and with greatly increased and an upper portion 20, the latter being prefersmoothness aforesaid than the presently known ably of a lesser diameter than the former sub- 80, type of regulators and more particularly the dia stantially as shown. Surrounding'the stem por-' phragm types of such devices. A tion 20 at the upper side of the division-plate 18 With the foregoing and other equally important is a stufiing box 21'to prevent escape or seepage objects and advantages in view, the invention of pressure or liquid from one casing part to the I residesin the certain new and useful combinaother. J tion, construction and arrangement of parts as The lower end of the upper stem portion 20' will be hereinafter more fully-described, set forth is preferably screw threaded upwardly'from the in the appended claims, and illustrated in the point of connection with theupper end of-the accompanying drawing, in which: lower stem section'20, and engaged over the same,

t Figure 1 is a vertical section through a pracbetween the latter and an adjustable clamp nut 90., tical embodiment of the invention; 22, is a piston which is made up of a lower metal Figure 2 is a horizontal section, taken on the plate 23, an intermediate flexible disk 24 and an line 2-2 of Figure 1, and 7 upper metal plate 25. These plates 23 and 25 a Figure '3 is a side elevation of the upper en and the disk 24 are of circular form to corre- 4() portion of the regulator and showing a modified spond to the preferred cylindrical form'of the 95 form of the adjustable control means. casing parts 10 and 10','the upper plate 25 is of Referring to the drawing, the embodiment of a diameter so as to have a snug sliding fit in the invention, as shown therein by way of exthe casing part 10 the intermediate disk 24, ample, is constituted in a lower casing part 10 which is preferably of leather, of a greater diamwhich is normally open at itsupper side and has eter in order to have its marginal edge cupped 100,

outwardly bossed and interiorly screw threaded in a downward direction to bear against the side openings 11 and ;12 in its opposite ends for the wall of the casing part 10'; and the lower plate engagement therein of the adjacent and comple- 23 of a slightly'less diameter than the upper mentally screw threaded ends of a pressure intake plate 25 in order to have its peripheral edge to pipe 13 and an outlet pipe 14 respectively. engage at the inner side of the depending flange 105 Extending transversely of the interior ,of this portion of the cupped portion of the disk 24. Discasing part 10 is a partition 15 whichhas its top posed on the lower side of the lowermost plate edge portion 15' extending angularly and con- 23 is an annular memberor ring 26 having a nected with thetop edge of the casing part at the channel in its outer side face to receive a spring intake end thereof. Projecting forwardly from member ,ZT- hich. bears against the inner side l1 0 of the cupped marginal edge portion of the disk 24 to tension the same against the opposed wall of the casing part 10'.

Arranged in circular series in the piston 23 and concentrically about the valve stem section 20 are a number of openings 28 which extend vertically through both of the plates 23 and 25 and the intermediate disk 24 to establish communication between the chambers formed above and below the piston and to permit oil or the like, supplied to the lower of the chambers by a piped inlet 29, to pass from the latter to the upper chamber, as occasion requires.

Secured on the upper side of the top plate 25 of the piston 23, in concentric relation about the valve stem section 20' and the openings 28, is a cylindrical body or cup 30, which has its lower end open and its side wall outwardly flanged to permit fastening thereof to the plate 25 of the piston by means of bolts or the like 31. This body or cup 30 is of a height and diameter to give to the same an appreciable capacity for the reception therein of the amount of the oil to pass to the same upwardly through the openings 28 during certain of the operative movements of the valve stem, but its height is such that it will be free from contacting relation with the top wall of the upper casing part 10 when the valve stem moves to its uppermost position. The top wall of the inverted cup 30 has a central opening therein to engage over the threaded portion of the upper stem 20 and is clamped between two nuts 32 and 32'.

Formed with or mounted on the lower end of the valve stem section 20 is a valve body 33 arranged to engage a .seat 34 removably secured in the opening aforesaid formed in the top wall of the'pressure chamber 16, while a second valve body. 35 is formed with or mounted on a separate 5 valve stem section 20 which is dependingly supported from the center of the lower side upper valve body 33. This lower valve body 35 is arranged to seat in the hereinbefore mentioned opening in the bottom wall of the pressure chamber 16. Thus both of these valves 33 and 35 open and close on their respective seats simultaneously whenever the valve stem is actuated as will be hereinafter more fully explained. The valve seat 34 is preferably screw threaded into the upper opening of the chamber 16 and thereafter further secured in place by means of a bolt 34'.

The upper end of the valve stem section 20' projects through the opening in the top wall of the casing part 10' to a sufiicient'amount to receive on the same a length of coiled spring 36, which is adjustably tensioned in place by means of a washer 37 and a nut 38, the latter being arranged in screw threaded engagementon the free end portion of the stem section 20. A'stuifing box 39 is provided on the upper side of the top wall of the casing part 10 and about the projecting end portion of the stem section 20 and the lower end of the spring 36 bears against the top end of the adjustable packing nut 39'.

In the operation of theregulator as thus constructed and arranged, the spring 36 normally functions to maintain the balance valves 33 and 35 open, in which condition, the piston 23 is elevated in the casing part 10', so that pressure from the inlet 13 will pass directly through the casing part 10 and the chamber 16, to the outlet 14; a portion of the pressure, from the lower pressure or outlet side of the casing part 10 being lead by a pipe connection 40 to the upper casing part 10 at a point above the piston 23. This pipe connection 40 as shown, is preferably connected to the outlet pipe 14 immediately adjacent the point of connection of the same with the adjacent side of the casing part 10 and enters the upper casing part 10 at the same side thereof well toward its upper end. I

Now, with the chamber in the lower side of the upper casing part 10 filled with oil from the supply pipe or inlet 29, and the valves 33 and 35 sustained in open position by the action of the spring 36, the tensioning effect of the latter will be opposed by the pressure admitted to the upper chamber of the casing part 10, through the pipe 40 from the main pressure outlet 14, acting on the upper side of the piston 23 to the end that the valves will be regulated thereby to the desired gage pressure to be maintained in the system. In the event of an increase of pressure above the gage pressure setting of the spring 36, a downward movement of the piston 23 occurs by the effect of the increased pressure on its upper side, and the valves will be correspondingly moved toward closed position. This downward movement of the piston 23 is, however, obtained only with a slight retardation effect from the body of oil in the lower chamber but also with an accompanying gradual upflow of the oil through the openings 28 and into the cup 30. Also in such movement, the spring 36 will of course be correspondingly compressed.

In the event that the demand for pressure on the outlet 14 increases, the pressure in the chamber of the upper casing part 10 above the piston 23 will be lowered, when the spring 36 will expand in a corresponding amount and increase the opening of the valves 33 and 35 by lifting the valve stem and the piston 23, so that a proper additional amount of pressure will pass through the lower casing part 10 from the inlet 13 to the outlet 14. As the piston 23 rises, in this instance of its operation, the oil which had previously entered" the cup 30 will be forced back into the space or chamber below the piston.

As shown in Figurel, the outer end of the oil inlet 29 terminates in a flattened hollow portion 41, which has an opening in its upper side in communication with the bore of a sight tube 42. The upper end of the sight tube 42 is disposed in registry with an opening formed in the open side of a similar hollow flattened portion 43 of a piped pressure outlet 44 opening into the casing part 10' at a point above the piston 23. The oil inlet 29 and the pressure outlet 44 are provided with cutoff valves 45 and 46 respectively, which are located outwardly of the casing part 10 and between the same and the sight tube 42. Thus, the

. is providedfor the purpose and which opens into the portion 43 at the outer side of the cutoff valve 46 for the passage of oil directly to the sight tube. A cutoff valve 48 will also be provided in the pipe connection 40 to control the pressure admitted to'the upper chamber in the upper casing part 10 from the pressure outlet 14.

In Figure 3, a control lever 49 is substituted for the adjustable tension spring 36 and here, the valve stem 20 is pivoted in the forked end 49 of the lever which is, in turn, pivoted at an intermediate point 50 in the upper forked end of a bracket 51 rising from the top wall of the casing part 10. An adjustable weight 52 is slidably mounted on the free end portion of the lever 49. Thus, by moving the weight along the lever 49, the regulator may be said to operate at any desired pressure.

Without further description, it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from thespirit of the invention or its scope as claimed.

I claim:

1. In a pressure regulator, a casing formed to provide upper and lower compartments, the said lower compartment having an inlet and an outlet for the pressure, a valve in said lower compartment for regulating the flow of pressure therethrough, a rigid partition between said upper and lower compartments, a stem passing from said valve and upwardly through said partition, a piston mounted on said valve stem within said upper compartment and dividing said compartment into independent chambers, means for introducing pressure from the outlet side of said casing into the said upper chamber above said piston, spring means acting on said valve stem to elevate the same and associated parts against the force of pressure at the upper side of the piston, and a relatively non-compressible fluid withlower compartment having an inlet and an out let for the pressure, a valve in said lower compartment for regulating the flow of pressure therethrough, a rigid partition between said upper and lower compartment, a stem passing from said valve and upwardly through said partition and said upper compartment, a piston carried on said valve stem within said upper compartment and dividing said compartment into independent upper and lower chambers, means for introducing pressure from the outlet side of said casing into said upper compartment above said piston, spring means acting to elevate the valve stem, the piston and the valve against the force of the pressure at the upper side of the piston, said valve being open in the elevated position thereof, a cup-shaped member carried at the upper side of said piston, said piston having openings to establish communication between said cup and the said lower chamber, and fluid means within said lower chamber and adapted to be displaced upwardly through the said openings, and into said cup upon any downward movement of said piston due to increased variations in pressure on the upper side of the same.

RASSELLAS M. DECKER.

Images