US937721A - Fluid-pressure regulator. - Google Patents

Description

E. SGHULTE. FLUID PRESSURE REGULATOR. APPLICATION FILED K0129, 190v.

93?,72L Patented m 19, mm.

2 EEEETSBHEBT 1.

E. SGHULTE,

FLUID PRESSURE REGULATOR.

7 APPLICATION FILED NOV. 29, 1907. I g'g 'igl o v Patented Oct. 19, 1909.

2 SHEETS-SEEM. 2.

81mm wkoz EDWARD SCHULTE, 9F HAMBT, WESTPHALXA,

regulating system for a '1 and 2, referred to herein as Q on l.

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GERMANY, ASSIGNSR TO UNITED COKE AND GAS COMPANY, A COBPGRATIUN GF'WESE .VIEGENIA.

lELUI-D PEESSUEE To (ZZZ whom it may concern:

Be rt known that l, EnUAnu a subject of the Emperor of Germany, residing in Hamm i. 5 Germany, have invented a certain new and useful Improvement in Fluid-Pressure Regulators, of which the.

following is a specification.

This invention has relation to an 1mproved form of electric reversing switchadapted to operate by changes in fluid pressure, particularly for use in connection With automatically controlled blowing or suction. machinery.

One principal object of this invention is the provision ofsimple and eli'ective mechanism whereby the results desired may be made operative by very small changes in fluid pressure; and in this connection, the preferred form of my invention is made adjustable, not only for initially accommodating a given regulating device to a given wir'or gas pumping apparatus, but also for quickly compensating, from time to time, for minor changes in Working conditions.

A preferred illustrative embodiment or" this invention is shown in the accompanying ra-Wings, Wherein Figure l is a vertical central section. of my automatic governing switch, Fig. 2 is a plan view of the same and Fig. 3 shows e .group of two blowers.

In Fig. 3 are shown two air or gas mains, the supply main 1 and the delivery maln 2. One or more blowers or pumps are employed "in transferring the air or gas from the supply tothe'delivery main, and in Fig. 3, tWO of these are showne t 3 and t. Each blower is driven by an appropriate prime mover, as

for instance, the steam engines 5 and 6,

which transmit'poWer-by belts Z and 8 or.

otherwise. The 5 engines is supplied by pipes 10 and H valves 12 and 13-.

This invention 2am for driving these from the steam main 9 is applicable to a system -wherein a separate electric motor is used for plurality of prime movers. This system is Specification of Letters Iratent. fi iginal application filed April 3, 1392, Serial Ito. 386,163. hivified and this application riled November 29 eel-nu no.

leading to appropriate- Pettented. trot recs.

plied at proper intervals with Worms 'lil engaging Worm Wheels 17 (one for each prime mover. The shaft 18 of each Worm Wheel 1 operates one or the other oi tne valves l2, l3

in a- ,vvell known manner, so that, when the shaft revolves in. one direction it Will slowly open the valves 12, 13, simultaneously, and it- 'will close these valves when turned in the opposite direction. The electric motor lfl is normally at rest and it is made to run in one direct-ion or the other when required for regulation of the system, by means of the automatic governing switch shown in Figs. 1 and 2.

The-mode of use of the governing switch and its adjuncts Will depend upon Whether it is desired to regulate pressure in the sup-- ply main 1. or in the delivery main the pressure or the gas Within the supply main is to be regulated then the entrance pipe l9 shown in Figs; 1 end 2 must be connected to the su ply main. If the pressure of the gas delivered is to be regulated, the pipe 19 must be connected to the delivery main,

The pipe 19 leads to the lower part 20 of a casing 21, the upper partof which is open to the atmosphere, as by the opening 22. The two parts of the specs Within the casing 21 are horizontally divided by a flexible or movable diaphragm preferably composed of d solid central disk 23 supported by a corrugated annular strip-of flexible material, 24, such as thin leather.

Upon a standard 25, fixed to the top of the casing 21 a balancing beam is supported, which beam is preferably composed 01 two light metal frames 26 27 joined by insulating cross pieces and sunported upon the standard 25 by the knife edge 29.

The Weight of the disk 23 is partly supported by the suspension bar 30 attached to the dislt preferably at its C(.llt1,'-Wlill1 bar is proyided at its upper end with :1 knife edge 31, resting upon an appropriate insulatlng' cross piece 32 vhose ends are fixed to the frames 26; 27.

Fig. 1 shows a balanced condition of the governor, which is the position assumed when the pressure transmitted through the pipe 19 conforms to what is desired in the system to be regulated. In this position, assuming the pressure regulated to be less than the atmosphere, the combined weight of the suspension bar 30, of the flexible diaphragm and of the atmosphere on the one hand is balanced by the upward pressure of the gas in the chamber 20 and by the tipping effort of the balancing beams 26, 27. In any case arou'gh preliminary adjustment of the device is accomplished by sliding the weight to the proper position on its arm and fixing the same once for all in that position by means of the binding screw 34. After this the smaller wei ht 35 can be moved along its arm 'to 'accomp ish final adjustment where changed conditions in the system render it desirable. N otches are preferably provided with which the end of the screw36 may engage. By these means the balancing of the a paratus is accomplished to suit anydesired conditions so that the balancing beam remains horizontal when the gas pressure to be regulated is correct.

, At each end of each frame 26, 27 a long metal contact is provided, the same being shown at 37, 38, 39 and 40, and each being preferably provided with a' milled edge whereby its position may be adjusted by hand either by providing a thread on the pin for screwing it up and down or otherwise.

Under each of these pins is placed a cup in whichmercury is poured to such a level that the pins are not quite immersed, but stand a little above the liquid when the balancing beam is horizontal. These cups are shown at 41, 42, 43 and 44. Any conducting llquid.

may be used in these'cu'ps. Similar mercury cups 45, 46 are provided under the middle of such frame 26, 27 and a depending arm 47 (shown in dotted lines in Fig. l) connects each frame permanently with the mercury in said cups. The wire 48-.electrically. connects the cup 43 with the cup 42, and the wire 49 connects 41 and 44. Wires 50, 51, connect LWO cups 45, 46 with the two armature T rushes of the motor 14 as shown inFig. 3. The terminals 52, 53 ofithe motor 14 are connected by the switch 54 to the electrical mains 55, 56. At 57 and 58'are shown the resistances ordinarily used in the armature and field magnet circuits of the motor.

From the description above given it will be obvious that, so long as the gas which enters the pipe 19 remains at the pressure desired and the pins on the balancing beam, do not touch the conducting liquid below them, the armature circuit of the motor '14 will not be closed, and there will be no change in the position of the valves 12 and 13. If, however, the pressure'in the chamcup 41 and resistance 57. This will drive the motor 14 in such a direction as to increase the opening of valves 12 and 13 and thus cause the blowers '3 and 4 to exert more exhausting action upon the supply main 1. If, on the contrary, the pressure in lthe chamber 20 becomes deficient, the cireuit will be closed by the armature in the opposite direction and the action of the blowers will be decreased.

The above description conforms to the conditions existing when the apparatus shown in Figs. 1 and '2 is connected by pipe 19 to the supply main 1. it is, of course, ob vious that, where the pipe 19 is connected to the delivery main 2, the electrical connections will be reversed.

The arrangement of balancing weights shown in Figs. 1 and 2 is that adopted when the normal pressure in the chamber 20 is insufiicient to support the weight of the dia phragm, the suspension bar and the atmosphere. It is obvious that suitable changes in the weights can be made for other normal conditions of interior gas pressure.

This is a division of another application of mine, Serial Number 366168 filed April 3rd 1907 wherein the general regulated blowing system herein shown is claimed.

What I claim is- 1'. In combination with a closed chamber, a diaphragm therein and three pairs of cups containing conducting liquid all on said chamber; a balancing beam connected by knife-edge connection with said diaphragm, four conducting pins carried on opposite ends of said beam and adapted to dip into two of said pairs of cups and two conduct ing arms on opposite sides of the middle of said beam and dipping into the remaining cups, substantially as described.

2. In apparatus of the class described, a

scribed.

EDUARD SCHUL Witnesses:

WM. VALNDORN, M. Knnrrsrs.

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