US361796A - Pressure-regulator - Google Patents

Description

No. 361,796i

(No Model.)

*l J.'E.WATTS, PRESSURE REGULATOR.

Patented Apr. 26,1887.

N. vnlins. mwumegnpnur. wmzngmn. u c.

JoSnP'H WATTS, onLAwnnNon, MASSACHUSETTS.

l PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 361,796, dated April426,513'.

Application tiled March i9, 1887. Serial No. 231,479. (No model.) i l I ,.UNITEI') STATES PATENT To all whom, it may concern:

Be it-known that I, JosnrH E. WATTS, a citizen ofthe United States, residing at Lawrence, inthe county of Essex and State of'Mas- `sachusetts,have invented certain new -and useful Improvements in Pressure-Regulators; and

' I do hereby declare the following to be a full,

clear, and exact description of ythe invention,

such as will enable othersskilled in the art to 1c. which it appertains to make and use the same,

reference being 'had to the accompanying drawings, and -to letters or igures ol' reference marked thereon, which form a part of this specification.

This invention relates to pressure-regulators, so called, by means of which the initial or live-steam pressure is reduced and regulated to suit the supply and requirements in other closed vessels or cylinders adapted for z'o purposes where very much less pressure of steam is needed.

My invention consists, primarily, in the'general arrangement and method of operating the main valve, which is a balanced7 valve, so

called, whereby the movement of the latter is eected more gradually and the low-pressu re system is not subjected to such extreme fiuctuations as now occur where the main valve is not balanced, and is thus liable to extremes V3o of movement; secondly, in boring the main valve in such manner that the rearside of the valve, when the latter 1s closed, shall be subjected to the initial or high pressure in contradist-inction to valves employed' in regulaj 3 5 tors of this class, in which the rear side of the main valve is connected with and open to the Y low-pressure system jwhen the said valve is closed.v

The drawings represent in Figure 1 a plan, 4o and Fig. 2 a central vertical section, of a pressure-regulator embodying my improvements.

The pressureregulator shown in the accompanying drawings belongs to that class in whicha weighted pulsating diaphragm oper- 4 5 ated by the variations in the low-pressure system serves to control a secondary valve, which in its turn regulates the movement of the main valve to admit or shut oft' steamunder initial pressure, such opening andl closing of the main.

5o valve being accompanied by an increase or dlmlnution of the pressure in the low system A represents the exterior casing of the val-ve as an entirety, which is hollow and centrally provided with a plunger-balanced7 valve,B, so called, which reciprocates 'through-thailaternal division-wall, a, and thereby controls the passage-and regulatesthe supplybetw-een the inlet-passage C and the.` discharge D: f The.

upper end ofthe mainvalve extends into atubular cap, E, which incloses the actuating-spring b. Furthermore, said valveB is bored at c, as

` shown, by which a duct is formed leading to a closed chamber, F, normallyopen to and under the initial pressure. The lower part of the chamber F is furnished with a port, d, controlled by a secondary valve, G. The latter is connected by the vvalve-stem e with a pulsating diaphragm, I-I, which controls this secondary valve and forms the bottom of a hollow well, j', to be filled with water from the condensed steam, to prevent sudden jumping or resilient action of the diaphragm.

The reduction or difference in pressure between the initial 4supply and low-pressure system is effected by means of a weighted lever, g, and by the adjustment of the weights thereon the action of the diaphragm is controlled and regulated.

The principal object in my invention is to render the regulator more efficient, and this is accomplished by adjusting theV several parts relatively to one another in such manner that the action ot'said parts shall be gradual; hence great fluctuations in the low-pressure system are avoided. Hence I have created two divisions, h fi, and provided each with a small aper ture, j, and by this means oblige lthe diaphragm to move slowly. 'Ihe advantage of this is readily pcrceirzed upon operating the regu-- later. This operation is effected by premising that the entire system is inactive, in which event both valves B and G will be open. Upon 'the introduction of hi gli-pressure steam its flow is nnimpeded and it passes through the main supply C into the discharge D,whieh is interconnected with the independent pipe I at any suitable point. When the pressure in the low system lis suicient to exert a counter-force upon the diaphragm II, the latter is actuated and causes thesecondary valve G to close. In- V" to maintain thelatter uniform and somewhat". less than that of the said initial pressure.

stantly therewith the pressure in the chamber F, then slighly less than the initial pressure,| is restored upon the rear of the main valve and the latter is closed, moving against the 5 tension of the spring b, beforementioned. The

main valve now remains closed and so continues until the pressure in the low system and that upon the diaphragm diminishes. The latter now pulsates upward, induced by the le- 'o ver g, and the secondary valve is again slightly opened. This latter action reduces the pressure m'omentarily'in the chamber F, and the main valve is freel to open.

'As soon as the -live steam withts initial 5 pressure has again restored the low system to 'its normal, the main valye is again closed. rIhus by balancing the main valve it is operated more easily and is more quickly controlled by the secondary valve. Furthermore, ,it is o always subjected, when closed or open, to the initial pressure which exists in the secondary chamber F in contradistinction to such regulators as have the secondary chamber directly connected and in free communication with the low-pressures'ystem at the time thev main valve is closed-'a decided objection.

I claim- 1. In a pressure-regulator, the combination,

with a balanced `m ain valve having the duct c and the chamber F, connected with the said duct, by which said chamber is continuallysubf ject to the initial valve G, controlled by the diaphragm and operating substantially as herein set forth.

2. In a pressure-regulating apparatus, the

chamber F, constantly subjected to initial pressure by and through the main valve, and

the pulsating diaphragm operating in the wellway f, the secondary Valve.G,which unites the. high and low pressure systems, and the indc'- pressure, of the secondary 35 combination of the main balanced valve B,'the

Images