USRE17371E - Assionob to goyne steam - Google Patents

Description

c. H. GOYNE PRIMING SYSTEM FOR CENTRI FUGAL/PUMPS Jul 9, 1929.

Original Filed Aug. ,20, 1925 2 Sheets-Sheet 1 g mento'o wa Zea-jZ 'gne C. H. GOYNE July 1929' PRIMING SYSTEM FORCENTRIFUGAL 'PUMPS Originai Filed Aug. 20', 1925 2 Sheets-Sheet 2 Reissued, July 9, 1929.

UNITED STATE onannns. 1r;- GOYNE, o1:- .AsH' Ann, PENNSYLVANIA, assrenoa-rofleoimn STEAM rune co, ornsnrnnn rnnns nvnmm'a ooaromrron or rnnnsvnvnnm.

Panama s'rs'rnu roa CENTRIEUGAL Pours.

Original in. 1,573,931, dated February as, 1926, serial no. 51,449, filed August 20; 1925. Application for I reissue filed November -7, 1927.- Serial No. 231,759.

T hisinvention relates to priming systems for centrifugalpumps.

An important ob'ect of "the invention is to provide a device'of this character which ywilliree the pump of all air and insure a proper priming, thereof.

A' 'u'rther object of the invention is to provide in a device of this-character, in which a prlnnng pump is employed for exhaustlng air from the centrifugal to'pr me the'same,

a system which is free from openings and in which accordingly a head of water may be maintained in priming corresponding to the degree of vacuum produced by the priming pump, thereby eliminating surging of.'tl1e water inthe centrifuga'lfandin connections between the cen trifugal and priming pump.

A- further object of the invention is to provlde in a device of this character a novel and Improved means forrehevmg the system as soon as the centrifugal is started and pressure produced thereby.

, A still further object of the invention is to provide a float control means regulating the application of vacuum produced in the priming pump to the centrifugal so constructed that it is impossible 'for water to enter-the 1 priming pump during the priming-operation or at any time thereafter.

A still further object of theinvention is r to provide means for relieving the priming column when the centrifugal is started to operation.

release all water containedtherein and thereby prepare the system for a second priming These and other objects I attain by the con struction. shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferredjembodiment of my inventionjand where1n:

Figure 1 is a side elevation partially di'a-' grammatic showingla pumping system constructed in accordance with my invention with the parts in the position which they oc-,

copy when the pump is primed and the centrifugal startedbut not .yet under pressure;

Figure 2 is a vertical sectional view through the regulator';"' J a Figure-3 is an enlarged vertical sectional View throughthe impulse valve;

Figure 4 isa detail view partially in sec- 7 tion of the drain valve.

Referring now more particularly to the drawings, the numeral 10 generally designates a centrifugal pum f of any suitable construction, this pump eing driven by a motor 11 orother suitable prime mover. 'In

the present instance, the porn is illustrated as a two stage pump of whic the impeller chamber of the first stage isindicated at 12,

the impeller casing of the second stage at 13' and the cross-over connection of the intake Of the second stage and the exhaust of the ffirst stage at 14. The numeral 15 designates 'Theoutlet of the intake chamber'communicates witha' lever chamber through the walls of which is directed a shaft 21 upon which is pivoteda lever 22, one end of which is connected by a link 23 with the float balll19.

The lever chamber has projecting'there iinto above the opposite end of the lever 21 the walls 2401? an outlet passage" 25. In

walls have formed therein openings 26 in whichoperate a cylindrical valve element 27 pivolally' connected to the opposite end of thelev'er, as at 28 This valve has its. ends closed, as indicated at 29, and is provided with a central partition 30-spaced from the upper end wall 29 a distance equal to the spacing of thewalls 24 of the outlet 25. Ad

jacenteach end partition, the walls of the valvelhave tormedtherein openings 31 and upon opposite sides of the central partition have formed therein openings 32.. When the alignment with the end of the lever, these valve is in the open position, the openings 31 and 32 at each side 'oithe partition are arranged uponopposite sides of the walls 24, 1

so that the lever chamber is in communication with the outlet and the-,inlet is likewise in communication with the outlet. When,

however, the ball 19 rises within thechamber 18,'the walls 29 and 30 align with the walls 24 and the outlet 25 is sealed from the lever chamber 20 andinlet and float chamber 18. I further provide what I terman impulse valve 33, this-valve comprising a casing havan outlet 36'. Between the inlet 34 and outlet 36 a valve seat 37 is arranged facing toward the the seat 37 The Outer end of the casing at ingmain' and secondary ' inlets 34 and 35 and the inlet and this seat has operating therein" ide 38 of a valve 39 for coaction with the has is likewise formed as, a seat, this mypnmping system, the inlet 34 of the valve 33 1s connected with the high point of the impeller casing of the high pressure stage of the pump or inthe present instance with the :high :point of the impeller casing- 13 by a I conduit 42. The remaining high points of the pump are connected with this conduit 42 by conduits 43,- each havingarranged therein a check valve 44, such a conduit 43 being supplied for each of the low pressure stages and for the cross-over connection-14.1. The

outlet 36 of the valve 33 is connected with the intake port of the intake chamber 18 by afconduit 4'5. This conduit has preferably arranged therein a:T 46 communicating with a Vertical leg 47, the lower end of which has 43 and accordingly in all'of the high points" purpose of which will an outwardly opening check valve-48, the presently appear. Theexhaust passage of the regulator is connected with the intake of the pump 15 byaconduit49.

In the use of the device, the pump 15 being inoperation, a vacuum is created in the conduits 49, 45, 42 and since the check valves 44 open toward the conduit'42 in the conduits of the centrifugal, this vacuum causes Water to rise into the centrifugal and conduit until it engage'swith the float 19 and elevates the same sufficiently to cause closing of the valve' 27 I This immediately cuts off the vacuum of- -the.pump'l5 and thewater ceases to rise but 111 event anyair should leak about the. stuffing boxes of the centrifugal and enter the same before the centrifugal is started and thus permit the water level to lower in the I float chamber 18, the valve will be immedi- I ately opened and'the suction brought into operation to restore tl1e water to .its proper level.v Starting of the centrifugal is preferably but not necessarily accomplished by means of a switch, generally designated at 50, and operated from an arm 51 secured to the pivotshaft 21 of the lever '22.. When the amp" is started, pressure generated within t is pump will act through the conduit 42 upon the valve 39, causing this valve to close and the valve 40 to open sothat the conduit- -45 is removed-from communication with the centrifugal and placed in communication with the atmosphere. is under pressure from the high stage, the

. pressure'generated within this conduit'will causethe check valves 44. to seatand prevent -tinu ation 54 of the stem 41 above the upper end "ofthe valve '40. VVhen-the valveis in its raised position and disengaged from its seat, this continuation operatively engages.

Since the conduit 42 the pressure 5f this 'high stage frombeing transmitted to .the lower stages. \Vith the" placing of the conduit 45 in communication with the atmosphere, the water within the conduit is permitted to drain back through 1 the valve 40 ormay drain through the'l'eg 47 and valve 48,.ifthis be provided. Such structure is-preferably provided: for it prevents passage of water over the centrifugal and its possible contact with a switch 52, the pose of which is now tube-described.

The switch 52 is an ordinary closed circuit jack switch the movable arm 53- of which is arranged in the path of movementgof a 'conthe arm 53 to-open the circuit of the switch 52.

This switch is arranged in one side of amotor s5 circuit 55 of the motor 16 and accordingly this motor c'ircuit'is broken when the valve 40 is opened and the pump'15 isbrought to ai stop. v This motor circuit55 preferably further includes a ,hand operated switch 56 I by means of which .thecircuit ma be manually broken. It will be obvious-t a't-the circuits referred to'have been diagrammatically illustrated and that, of course, the switch 51 would not serve'to maintain-the motor circuit after the priming. line had been drained.

Means for accomplishing this function are, however, old and well known and it will'ac-v cordingly be well understood how the same will be applied. An example of a method of maintaining the circuit of'the centrifugal pump motor which might be employed may, befoundin the patent to -Otto Haentj ens, granted October 28, 1924, No. 1,513,705. I

do not,- however, Wish to be understood as 1'05 limitingmyself to the use of such afmeans for maintaining the circuit.

It will be seenthat with the construction s employed, it-is not possible for any of the priming water to reach the pump 15 and this is an important feature of the construction for the reason that devices of this character are usually employed in pumping the sump of mines and accordingly the water being handle'd is very'dirty and capable of causing con- 1 I Siderable damage-t0 a small pump of this character. It will furthermorebe obviousthat a perfect prime of the centrifugal will;

be maintained at all times when the pump 15 is inoperation and that the system employed provides an efficient drain for removing the priming water after: each priming operation to prepare the system fora further operation. Attention is directed to thefact that by rea son of the construction and mounting of the valve 27, this valve is balanced, as regards suction applied thereto from the'pump 15 and will accordingly be unaffected in any way' whatever by this suction. I am aware'that systems somewhat resembling the system pur- 75 i hereinbefore set forth have .been employed but in all of these systems with which I am.

familiar, the ,valve corresponding in purpose to. the valve27 is so constructed or arranged" that it has unbalanced communication with the source of suction and accordingly will be held against the seat once it is seated as long as the suction pump continues to mm For this reason, it is impossible for the float operated valve to act in devices of the'character mentioned to relieve the suction of the priming pump after the centrifugal has been started and in' event the priming pump continues in operation. It will be noted that in the construction in accordance with my invention, after the portion of the priming connection between the valve 33 and regulator 17' has been relieved through the valve 40, the

'- valve 27 will be opened by the discharge of water .from this portion of the connection and since this portion of the connection is then opened to the atmosphere, the pump'15 will be relieved. The valve. 27, therefore, serves ."a-fter the'operation of the impulse valve 33 as The constructlon hereinbefore set forth is obviously capable of a certain range of change and modification without materially'departing from the spirit of the invention and I a'c- V cordingly do notlimit myself to the specific structure except as hereinafter claimed.

, priming pump therefor, a connection between Iclain1:'---- 1. In a priming and in combination with a centrifugal, a

a-Jhigh point of thecentrifugal and the priming pump including a valve. automatlcally segregating the centrifugal and priming pump when thecentrifugal is primed and before it is started and means in said connecplacing thatportion' of the connection'be-J tion between the centrifugal and valve automatically segregating the centrifugal: and-- valve when the centrifugal-is started and tween said ,means and valve in communica- 'tionwith the atmosphere.

2. In a priming system'for' centrifugals and in combination with a centrifugal,'-a

priming pumpftherefona connection between a high point of-thecentrifugal and the p'rim ing pump including a valve automatically segregating the centrifugal and priming pump when the centrifugal is primed andbe fore it is started and means in said connection between the centrifugal and valve auto matioally segregating the centrifugal and valve whenthe centrifugal is started and placing that portion of the connection between said means and valve in comunication with the atmosphere and rendering the primingpump inoperative.

3. In a. pri 'ng system for centrifugals and priming pump therefor, a balanced float opincombinationwit'h acentrifugal, a priming I I pump therefor, a connection betweena high point of the centrifugal and the priming pump including a valve automatically segre gating the centrifugal and priming pump-J0 when the centrifugaljis primed and before it is started, means in said connection between the centrifugal andvalve automatically segregating the centrifugal and-valve when the centrifugal is, started and placing that portion of the connection between said means and valve in communication with the atmosphere and means operative to drain sa d portion of the connection. when placed in Communicm erated valve and to place the portion of the connection betweenthe float and impulse valves lnto communicationwith the 'atmos- 9 phere. and means draining said port on of the connection when placed in communication with "the atmosphere. I

5: Ina pump system, a centrifugal pump,'

I H apriming pump therefor,abalancedfloat-opsystem for centrifugals erated valve arranged in the connection be 7 tween sa d 'pump'sand-an impulse valve ar- -trifugalpiunp to close communication between the centrifugal pump and the float 'operated valve and toplace the portion of the.

connection between the -float and 3 impulse valves into communication with the ,atmosphere and means draining said portion of the connection when placed in communication with v the atmosphere, said float operated valve opening to place. the priming pump in communication with said-portion of the connection when said portion of the connection is drained 'to thereby relieve the priming". pump upon continued operation thereof.

' 6. In a priming system for centrifugals and in combination with a centrifugal, a priming pump therefor,aconnection between a high point of the centrifugal and the priming pump including a valve automatically segregating :the centrifugal and priming pump'when the centrifugal is primed and bev fore it is started, means in said connectionbetween the centrifugal and valve automatically segregating the centrifugal and valve when the centrifugal is started comprising a.

casing having an inlet communicatingwith the high point of the centrifugal, a second inlet communicating. with the atmosphere,

an outlet communicatingwiththe-first named. valve and-valves for controlling said inlets connected for simultaneous. operation.

7. in a pump system, a centrifugal pump, a priming pump therefor, a valvearranged in the connection between said pumps, afloat for operating the valve, an impulse valve ar" ranged in saidiconnection between the first .named. valve and the centrifugal pump autonatically closing as the'centrifugal comes into operation, a 'motor for operatingthe priming ipump, a circui t for the motor in eluding'a normally closed switch and means operated by the closing of the impulsevalve for opening saidsvvitch.

8. In a pump system, a centrifugal pump,

a' priming line connected to the pump casing,

a float-opemted valve in said line for auto-- JnaticalIy' closing the same when the pump casing is primed, together with 'a second valve in said line automatically closed by pressure from the-pump-when the latte'r'is in operation and means associated therewith for..openingto' atmosphere the portion of said priming line between said valves; f

9. In a pump system,a centrifugal pump,

' a priming linejconnected to the pum casing,

a float-operated valveinsaid linev or auto- I matically'closing the same when the pump is primed, .togetl 1er with a second valve in said line automatically closed by pressure from thepump whenthe latter is in operation, and

means associated therewith for draining the portion of the linebetween said valves when;

the pump is in operation. V

v 10. In a'pump system, acentrifugal pump,

a priming pump therefor, a riming line connecting the pump casing-an the priming pump, float-controlled means in said line for automatically closingthe' same against the passage of liquid from-the centrifugal pump to the priming pump when the centrifugal pum casing is pr1med,a valve in said priming ine' between said means and the centrifugal pump closed by pressure from the pump when-the 'latter is in operation and means operated thereby for'opening to the atmosphere the portion ofsaid priming line between said valve and said means.-

11.- In a pump system, a centrifugal pump, a priming pump therefor, a priming line connecting. the pump casing and the priming pump, float-controlled means in said line for automatically closing the same against the passage of liquid from the centrifugal pumpto the priming pump when the centrifugal pump casing-is primed, a valve in'said prim- .is in operation.

ing line between said means and the cen-' trifugal pump closed by pressure from the pump when the latter-is" in operation and means operated thereby for draining the portion of the line between saidvalve and the first named valve when I the centrifugal pump '12. In a pump systenna centrifugal pump,- aconduit opening thereto for the reception of fluid from the pump casing during prim'-. ing of the pump,- a normally openjvalve in said conduit adapted to be closed by pressuregenerated when the pump is-started a drain port fOr'said conduit beyond said valve from the pump and a normally closed valve conv trolling said ortland-adapted to be opened by pressuregeneratedby the pump when started.

13. In a'pu mpsystenna centrifugal pump, I

a conduit opening thereto for the reception of fluid from the pump casing during priming of thepump, anormallyo en valve in saidconduit adapted to be close by pressure valve casing having a port communicating iwith the pump casing, a second port communicating with the atmosphere and=a third port communicating with the conduit, a nor-- mally open valve controlling the passage of port, a normally closed valve controlling passage of fluid from the third through the second port or vice versa, said valves moving oppositely to engage'their seats and being fluid from the first port. through the third i connected for simultaneous movement, the 0 under the influence of pressure generated in the pump casing when the pump is started.

15. In a pumpsysteni, a centrifugal pump, a fill conduit-for the receptionof fluid from the pump casing, a drainagepassage for the conduit, and a valve device alternately ad mit'ting. fluid fromjthe pump casing to the fill first named valve bein subjectto and closing conduit or opening the drainage passage,

said valve device being subject to automatic displacement by pressure from the discharge to open the drainage port.

In testimony whereof I hereunto aflix my signature.-

CHAS; n. eovnn Pump 1 a conduit forthe, reception of fluid from the. 9

. pump casing during priming of the pump, a

Images