US1376948A - High-pressure standard regulator - Google Patents

Description

1'. M. LARSON.

HIGH PRESSURESTANDABD REGULATOR, APPLICATION meow": 2. IBIL 1,376,94 Patented'May3,1921.

2 SHEETS-SHEET 1.-

J. M. LARSON. HIGH PRESSURE STANDARD REGULATOR. APPLICATION FILED JUNEZ. 1917'. 1,376,948.

v ii umreo stares earner orrice.

OHN M. LARSON, or CHICAGO, rumors, nssreixfon r0 narrower. REGULATOR COM- PANY, OF QHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

HIGH-PRESSURE STANDARD REGULATOR.

I Specification of Letters Patent. Pa-i; t d M 3 1921 Application filed June 2, 1917. SeriallNo. 172,535.

To all whom it may concern."

Be it known that 1, JOHN M. LARSON, a citizen of the United States, residing at Chicago, in the county ofCook and State oiv illinois, have invented new and useful 1H1 provements in. High-Pressure Standard Regulators, of which'the following is a full,

clear, concise, and exact description, reference being had tothe accompanying drawing, forming a part of this specification.

My invention relates to improvements in high pressure standard regulators, and has for its object the production of a device that will operate in a high pressure system with substantial accuracy and without danger of breaking. y

A further object is the production of a device which will act gradually and sensi tively, and of such simple construction as not to be liable to .disarrangcment of parts. These and such other objects as may hereinafter appear are attained by my device, embodiments of which are illustrated inthe accompanying drawings in which 1 Figure 1 represents a front elevation of my device with a portion broken away;

Fig. 2 represents a sectional view on the line 22 of Fig. 1, looking in the direction indicated by the arrows; and I Fig. 3 represents asectional view on the line 33 of Fig. 2, looking in the direction indicated by the arrows.

Like numerals of reference indlcate like parts in the several figures of the drawings. Referring now tothe drawings, 4: represents a pipe from a source of steam pressure controlled by a hand valve (not shown) 5 i represents a plug; 6 a strainer; 7 the main gage; 8 the drip cock from the stra ner, 9 the main cylinder casting; 10 a drip pipe from the cylinder; 11 a hand valve adapted to regulate the pressure within the system as shown by the auxiliary gage 12. 13 represents a piston rod within the cylinder 9, having an extension 13 provided with an eye 1d. The eye 14: may have secured therein a cord 14, which passesover suitably arranged pulleys 14 and is connected to a damper-lever 14, which isrsuitably counter-' The piston. rod passes through the cylinder head 15 and I an adjustable stufling box 16 and extends nearly to the bottom of the chamber, and on v weighted astindicated at 14!;

the end is mounted the piston head 18. This head at the end of the piston stroke strikes the stopsl9, leaving an opening 20 between thebotto'm of the piston and the bottom 21 of the'cylin'der. I

' An exhaust channel 22 is positioned within the casting, opening at at the bottom and communicating at the top 25 with a passage 24 in themain valve casting 26.

Referring now to the main valve casting 26 shown in Fig. 3, 27. represents a main chamber into which steam enters from the steam pipe 4:- In'the top of the casting is a cylindrically threaded opening 28, in the bottom of'which' is threaded a renewable bushing 29 with a central bore 30 therethrough, the top of the bore forming a valve seat 31. The top of the opening 28 is protected by a threaded plug 32, having a central threaded bore '83.' A bushing 33 is fitted within the bore and a screw nut 33* provided at the top. Within the chamber below the bushing 29' is an enlarged bore 34, the lower'walls of which-consist of a'central circumferential depending flange 35 within an enlarged exhaust chamber 36, opening on to the bottom'of the plate 37.

Mounted within thechamber 36, below the circumferential flange 35 is a plunger 38 adapted to strike, at the end of its stroke, stops39 on the bottom plate 37 thus forming a supplemental chamber 40 below the bottom of the plunger... The plunger is exwardly extending'walls being slightly dis tant from the innerperiphery, forming a passage42 between the chambers 40 and 36 and permitting'the passage of steam from one chamber to the other. c The plunger'stem 4:3 extends up within the chamber 351 and the valve stem 1-1 passes through the bushing 29. The main check valve 45 on top of the stem is adapted to seat on the valve seat 81. The valve head 46cxtends upwardly, entering into within the bore 38'below the bushing 33 and is surrounded with a spring 47, serving to hold the valve on its'seat. f A spring l8-su'rrounds the flange 35 and rests'on the top of the plunger, the, upper end of the spring resting against the top of the chamber 36. A port 19 is provided within the stem 43 which is uncovered by the downward movement of the plunger 38, communicating with the passage 49 opening into the chamber 86 as shown in Fig. 2.

The chamber 27 extends through the casting and terminates in a correspondingchamber 50 within a threaded bushing 51, screwed within the upper portion of the casting. The upper edges or this bushing are beveled, forming a valve seat for the supplementary ball check valve 52 which is normally held in engagement with the seat by means of a spring 53 within the bushing 54, screwed into the side of the casting. A screw nut 54 is positioned at the end of the bushing and covered by screw cap 55, providing an opening through which the adjusting screw 56 passes.

A passage 57 extends from the interior of the chamber 34, communicating with a passage 58 in the top of the main cylinder opening into the top of the cylinder above the piston head.

A passage 59 is provided within the valve casting communicating at its lower end with the chamber 40 and at its upper end with the chamber 60 in the interior of the bushing 54 and back of the ball 52.

Referring now to the operation of my device, when steam is admitted through the governor valve, pressure is created in the chamber 27 tending to seat the check valve 45 and also tending to unseat the ball check valve 52. Steam under pressure passes by the ball check valve 52 into the chamber 60 and down the passage 59 into the chamber 40 underneath the plunger 38 and tends to force the plunger upward, unseating the check valve 45 thus permitting the steam to flow gradually through the passage 57 into the cylinder 17, and gradually forcing the piston down, thus closing the damper when the boiler pressure rises.

lVhen the pressure falls, the ball check valve 52 gradually becomes seated, preventing the further passage of steam. The steam pressing against the plunger 88 escapes between the sides of the plunger and the walls of the chamber into the chamber 36 and out through the exhaust port 24. as the plunger 38 is forced 'down by the spring 48, the check valve 45 becomes seated, preventing further ingress of steam into the cylinder and the port 49 is uncovered by the downward movement of the plunger, enabling the steam within the cylinder to escape through the port and into the chant ber 36, and out through the exhaust 22, thus permitting the piston to rise and open the damper.

When the boiler pressure is registered on the main gage 7 the valve 11 is turned up slowly so as to put the regulator in opera manently set at any working pressure and will then operate in a graduated manner in about one pound variation. By the use of the screw 33 I can regulate longitudinal movement of the valve 45 and prevent any excess length of stroke.

By the use of my device I am able to operate directly on fluid pressure without any supplemental water supply. Any excess water of condensation will be forced.

out into the cylinder and through the ex haust in the operation of the device without building up any water column. It is also to be noted that by the use of the renewable valve seats shown, much greater eiiiciency is secured, as after the seats become worn, the bushing may be quickly renewed.

It will be noted that I have produced a very sensitive valve that operates in a graduated manner and with great power, the sensitiveness being in no way effected by the power exerted and in which all of the parts are readily accessible and renewable. While I have shown a specific device and specific means by which the desired results may be accomplished, it is clear that there are numerous variations and modifications that will occur to those skilled in the art and that can be made in the mechanism of parts without in any way departing from the spirit of my invention.

The cylinder 9 and piston 18 are in effect power cylinder and piston, the passage 57 affording communication between the cylinder and source of fluid pressure. The valve 45 is in effect a main check valve controlling the passage 57. The cylinder 36 and piston 38 constitute a controlling cylinder and piston for controlling the main check valve 45. The passage 59 connects the controlling cylinder with a source of fluid pressure. The'valve 52' is a pressure reducing valve. When the controlling piston 38 opens the main check valve, the controlling piston will be subjected to the-pressure of the fluid which passes themain check valve, through the bore 30 in the bushing 29. The passage 49 is an exhaust passage, which is completely closed simultaneously with the opening of the main check valve, and is initially opened simultaneously with the complete closing of the main check valve.

I claim:

1. In regulator the combination with a cylinder and power controlled piston operating therein, a source of fluid pressure, means for utilizing said pressure to regulate the movement of said piston, said means comprising a main valve casting containing a main chamber and supplemental chamber communicating with the cylinder above the cylinder and power controlled piston operating therein, a source of fluid pressure, means for utilizing said pressure to regulate the movement of said piston, said means comprising a main valve casting containing a main chamber and supplemental chamber 7 communicating with the cylinder above the piston and an exhaust chamber, a valve controlling a passage between said main and supplemental chambers and a check valve controlling a passage between said main chamber and said exhaust chamber, a s ring held piston mounted in said exhaust c liamber and extending into said supplemental chamber and adapted to engage and operate said main valve.

3. In a regulator the combination with a cylinder and power controlled piston operating therein, a source of fluid pressure, means for utilizing said pressure to regulate the movement of said piston, saidmeans comprising a main valve casting contain ing a main chamber and supplemental chamber communicating with the cylinder above the piston and an exhaust chamber, a spring controlled main valve controlling a passage between said main and supplemental chambers and a spring controlled check valve controlling a passage between said main chamber and said exhaust chamber, a spring held piston mounted in said exhaust chamber and extending into said supplemental chamber and adapted to engage and operate said main valve.

4:. In a regulator the combination with a cylinder and power controlled piston operating therein, a source of fluid pressure, means for utilizing said pressure to regulate the movement of said piston, said means comprising a main valve casting containing a main chamber and supplemental chamber communicating with the cylinder above the piston and an exhaust chamber, a valve controlling a passage between said main and supplemental chambers and a check valve controlling a passage between said main chamber and said exhaust chamber, a piston mounted in said exhaust chamber and extending into said supplemental chamber having a passage communicating with said chamber and adapted to engage and operate said main valve.

5. In a regulator the combination with a cylinder and power controlled piston operating therein, a source of fluid pressure, means for utilizing said pressure to regulate the movement of said piston, said means comprising a main valve casting containing a main chamber and supplemental chamber communicating with the cylinder above the piston and an exhaust chamber, a valve controlling a passage between said main and supplemental chambers. and a check valve controlling a passage between said main chamber and said exhaust chamber, a piston mounted in said exhaust chamber and extendinginto said supplemental chamber having a passage communicating with said chamber and adapted to engage and operate said main valve, thestem of said main valve normally closing the entrance -to said passage.

6. In a regulator the combination with a cylinder and power controlled pistonoperating therein, a source of fluid pressure, means for utilizing said pressure to regulate the movement of said piston, 'said means comprislng a main valve casting containing a main chamber and supplemental chamber communicating with the cylinder above the piston and an exhaust chamber, a spring controlled main valve controlling a passage between said main and supplemental chambers and a spring controlled check valve controlling a passage between said main chamber and said exhaust chamber, a spring held piston mounted in said exhaust chamber and extending into said supplemental chamber, having a passage communicating with said chambers, the stem of said main valve normally closing the entrance to said passage and adapted to engage and operate said main valve.

7 In a regulator the combination with a cylinder and power controlled piston-operating therein, a source of fluid pressure, means for utilizing said pressure to regulate the'movement of said piston, said means comprising a main valve casting containing a main chamber and supplemental chamber communicating with the cylinder above the piston and an exhaust chamber, a valve controlling a passage between said main and supplemental chambers and a check-valve comprising a ball and a renewable seat controlling a passage between said main chamber and said exhaust chamber, a piston mounted in said exhaust chamber and extending into said supplemental chamber and adapted to engage and operate said main valve.

8. A regulating device comprising a power cylinder and piston, and means for controlling said piston comprising a pas-. sage affording communication between said cylinder and a source of fluid pressure, a main check-valve controlling said passage, a controlling cylinder and pistonfor con trolling said main check-valve, a passage: connecting said controlling cylinder with said source of fluid pressure, a pressure reducing'valve in said passage, and means whereby when said controlling piston opens said main check-valve said controlling piston will be subjected to the pressure of the fluid which passes said main check-valve.

9. A regulating device comprising a power cylinder and piston, and means for controlling said power piston, comprising a passage affording communication between said piston and a source of fluid pressure, a main check-valve controlling said passage, a controlling cylinder and piston for controlling said main check-valve, a passage affording communication between said controlling cylinder and said source of fluid pressure, a reducing valve in saidpassage, a passage afl'ording communication between said power cylinder and the exhaust, and valve means controlled by said controlling piston whereby said exhaust passage is com pletely closed simultaneously with the initial opening of said main check-valve, and is initially opened simultaneously with the complete closing of said main check-valvej 10. A controlling device comprising a power cylinder and plston, and means for controlling said piston, comprising a passage affording communication between said power cylinder and a source offluid pres; sure, a main check-valve controlling said passage, a passage aflording communication between said power cylinder and the exhaust, valve means controlling said eX- haust passage, a controlling cylinder and piston for controlling said main checkvalve and said exhaust valve, a passage affording communication between said conwitnesses. I r JOHN M. LARSON.

Witnesses:

Jos. H. DRIG, H. WV. HARRIS.

Images