US1160943A - Apparatus for withdrawing aerated vapor and condensate from steam-condensers. - Google Patents

Description

n. B. mamon I APPARTUS FOR WITHDRAWING ERATD VAPOR AND CUNDNSAT'E FRG# S'EM GUNDENSERS. I

APPLICATION NLE) UG.3i. 9l4. A

Ll @$43. VEmma Nov. 16, mais.

. s A 4 sHEETls-SHEET 1.

D. B. MURISUN. APPARATUS FOR WITHDRAWING AERATED VAPOR AND CONDENSATE FROM SIEAM CONDENSERS. APPLICATION FILED AUG,3I. I9I4.

L 60,943, n' Patented Nownfl, I9I5.

4 SHEETS-SHEET 2.

n. B. Mawson, APPARATUS FUR WITHDHAWING AFRAED MPOR AND CONDENSATE FROM STEAM CONDENSERS.

APPLICATSON FiLED AUG.3I 1914.4 Ll, @www Nov. m, 1915.

' 4 SHZiS-SHEET 3.

' bf. MOmsoN; APPARATUS FOR W'ITHDHAWI-HG- AERATED VAPOR AND CONDENSATE FROM STEAM CONOENSEHS.

APPLICATION FILED AUG-3l19l4.'

Patented Nov. 16, 1915.

UNITED STATES vPATENT OFFICE.

DONALD Banus Monson, or HARTLEPOOL, ENGLAND.

APPARATUS FOR WITHDRAWING AERATED 'VAPOR AND CONDENSATE EROI! STEAM- CONDENSERS.

Patented NOV. 16, 1915,

Application led August 31, 1914. Serial No. 859,481.

To all whom it m ay/ conce/ML Be it known that I, DONALD BARNS MORI- sox, a subject of the Kinor of Great Britain and Ireland, residing at iartlepool, in the vcounty of Durham, England, have invented A an auxiliary surface condenser in which the steam is condensed by cooling Water that is not suitable for use in the boilers andfrom which the air is discharged by an air pump, the heat in the steam from the steam jet is lost.

This invention relates to improvements in steam condensing apparatus Working under vacuum wherein aerated vapor is Withdrawnl from a main condenser by a steam jet and is discharged into a receiver in which the steam from the steam jet is condensed by 'y water such as boiler feedivater.

The object of the invention is t0 Provide improvements in apparatus of the kind referred to in order to obtain effects by temperature. whereby the size of the pump or pumps and the necessary driving power can be reduced, the arrangement being such that the heat in the steam from the steam jet and in the vapor from the condenser is usefully absorbed by boiler feed Water; and whereby the air pump is enabled to deal with a large range of air in the vacuum system, thereby promoting reliability under varying conditionsof Working.

According to the invention a regulated quantity of boiler feed Water which is only sufficient to usefullyabsorb the heat from the steam jet, is admitted to a receiver in which it condenses steam from the steam ljet and in which' the vapor temperature is maintained higher than the vapor temperature in the condenser `whereby the quantity of water required for the condensation of the steam in the receiver is reduced and thereforethe pumping power required to discharge/such water tothe atmosphere is' also Y reduced. The heated Water and aerated vaeither side of the piston or pistons, or delivered into one or more barrels on one side of the piston or pistons, in each casejvvith" or without condensate from thev condenser, which may be delivered to the pump or pumps direct or through a Water seal. When the heated Water is Withdrawn from the receiver separately at a higher temperature than the aerated vapor, the air pres'- sure or air density of the aerated vapor may be increased by the condensation bf the vapor by another portion of the boiler feed wateryof a temperature lower than that discharged from vthe receiver, thus decreasing the volume ofwa given Weight of air and reducing the size of the air pump and the power necessary to discharge the air' to the atmosphere.

' The improve'd technical effect of apparatus according to the present invention-is obtainable both withsurface condensers and jet condensers. For example, the quantity .of steam used in a steam )et to provide for the removal of a large Weight of air may be sufficient to raise the temperature of the whole condensate from the main condenser ten degrees Fahrenheit; consequently, the same quantityv of steam would raise one third of the condensate, or one third of the total quantityvof the feed Water required lfor theboilers, 30 Fahrenheit. Suppose in a surface condenser the vacuum is 96 per cent. and the vapor temperature is 85 Fahrenheit and that the condensate is Withdrawn from, the condenser at Fahrenheitv by a separate pump. If one third of the total quantity of the condensate at '75O Fahrenheit is led into the steam jet receiver, it Willleave the receiver at about 105 Fahrenheit and the temperature of the vapor in they receiver will be maintained at about 110 'Fahrenheit. If the aerated vapor fromthe receiver is brought into direct contact with the condensate at 75D Fahrenheit, the volume of a given weight of saturated air can .be reduced from 900 cubic feet per lbfto 2Q() cubic feet per 1b. whereby .it caribe dis charged by an air pump of reduced size and requiring less power, and .Wherebyvery high thermal etiiciency vcan be obtained. The Same result obtains With a jet condenser carrying a vacuum of say 96 per cent. and a ycorresponding vapor temperaturey of Fahrenheit, when the mixture of cooling water and condensate withdrawn from the condenser, which is about 75 Fahrenheit, 1s suitable for use as boiler feed water, ror when the boiler feed Water is supplied from another source.

`For steam turbine condensing plant working under very high vacuum, two vpumps may be employed, one pump .drawing condensate from' the condenser 1n the ordinary way and the other pump drawing aerated vapor from the receiver, the heated water from the receiver being admitted to either or both of the pump barrels between '4 the pistonand the dischargevalves, -so that it is without prejudicial effect on the air vwithdrawing capacity of the air ypump or pumps. By this particular arrangement the water seal which is usually employed 1n apparatus of this kind between the condenser and the pump, may be dispensed with. Therefore -this arrangement may be of great practical advantage on shipboard where the spaceavailable'for a Water seal below thev condenser does not usually exceed three or four feety and thereby limits the pressure at which the air pump may withdraw and therefore the amount of air it c an deal with.

The accompanying drawings Figures l to 8, illustrate various forms of apparatus according to my invention, the same letters'of reference being used to denote the similar parts in the several figures.

Aerated `vapor is withdrawn from thecondenser c by a steam jet device s discharging into the receiver 1- wherein the steam from the jet` is condensed by water such as boiler feed water admitted through the pipe t.

In Figs. 2, 3,4, 5, .and 7, av regulatedv quantity of boilerv feed] water, which is only suficient to usefully absorb the heat from the steam jet, is admitted through the valve g into the receiver. r in which it condenses the steam from the steam jet device s, and in which, receiver the vapor temperature 1s the boiler feed water'adrnitted throughy the valve 71 andofa temperaturelower than that discharged ,from the receiver .r through the p lpe e, and. therefore the-temperature 'of-the air delivered-to the'pump is rendered lower than the temperature of the heated water Withdrawn from the receiver 1' through the pipe e, thus decreasing the volume of a givenweight of air and reducing the size of the air pump and the power necessary to drive the pump. p

In Fig. .1, the heated water is delivered from the receiver r through the pipe'e to-` gether with the aerated vapor into that end ofthe barrel of the reciprocating pump b which is situated between the piston and the head valves, and the condensate from the condenser c is delivered through the pipe du to that end of the barrel of the pump b which is situated below usual manner.

In, Fig. 2, the condensate is withdrawn' from thesurface 4'condenser c through the pipe d by the pump b and a portion of the /condensate discharged from the pump is delivered from the well w'through the pipe t to the receiver r and to the pipe ,f for the purpose herenbefore described. The aerated the piston, in the"` vapor is withdrawn. from the receiver 1' through`the pipe f by the pump a and enters" the end of the barrel below the piston,

while the heated lwateris withdrawn from the receiver r through pipe c by the same pump aand enters .the end of the barrel above the piston, thereby tending to balance" the water load on both pumps a and Z).

Fig. 3 shows an arrangement by which the pump a withdraws aerated. vapor alone y from the receiver r through the pipe f, the

whole of the heated water from/the receiver,` f

7' being admitted through pipe e to that end of the barrel of the pump b whichis above.

the piston, wherein it mixes with the condensate Withdrawn from the condenser through the pipe In this vexample both pumps are ofthe valveless piston type.

Fig. 4 is a'modification of Fig. 2, wherein the pump a. which withdraws the aerated vapor and heated water from the receiver r, I

discharges through the pipe c' into that end of the barrel of the pump b which is between the piston and the discharge valves.

In the arrangements described, the withv drawal of aerated vapor vand heated water from the receiver 1' in no way interferes with i with the removal yof condensate from-.the

condenser c thro-"ugh the pipe d, therefore the arrangements are very'advantageous in practice as they'obviate the limitations resulting from the use of a water sealbetween .thepump b land condenser. c. f

In Fig. 5, aerated vapor and heated water l are simultaneously withdrawn from ceiver 'l' by the pumpsictv and b, the being connected to those ends of both which are abovel thepistons, and the the re-l pipe le pumps thel ends which'a're' below' the pistons. In ,order to prevent! the flowof aerated vapor from the pipe f1 into the ndenser c which isunder a lower pressurethan the receiver 7*, a water seal j isprovided, the condensate vfrom the condenser' Pipes f" and f1 from the receiver vbeing connected to into'the 'pipe d" and thence.v

passing through the seal y' and into the pump o together with aerated vapor from the pipe fl `e'hich is thereby condensed and cooled hy contact with the condensate. if desired, the pump a may he cooled in a known manner by water in continuous circulation through a water cooler c, in which case the supply ot' water through the valve may he cut od or omitted. Also, both pumps a and b may he suitably connected 'together 'as for example by a valve o so that in the event of either pump `oecoming deranged, the other pump can withdraw the' aei' .ed vapor and heated water romthe receiver r together with the condensate from the condenser c, or by opening the valves o and c both pumps may oe employed for withdrawing the acrated vapor and condensate from the condenser c without using the steam jet device a and the receiver r.

n Fig. 6, the pump b withdraws heated water, with, it may, be, some aer'ated vapor from the receiver r through the pipe e, and the condensate from the condenser 'through the pipe d. Aerated vapor is also Withdrawn the receiver r by the dry air pump a, thewater being admitted to the receiver fr 'through the valve g consisting of condensate supplied from the well 'w into which the pump b discharges.

In Fi g. 7 which is a modication ot' ig. A6, a second receiver k forming the air suction stem is provided. The heated Water from :used vapor :from the receiver ,7c are led into that end of the barrel of the pump o which above the piston, the air being through the pipe ,t hy the dry an' ,a g, is a modification of Fig. and in which only one pump o is provided. in this' example the end of the barrel of the pump b which is shove the piston receives the aerated vapor through the pipe Airom the receiver r, and theend which is below the piston receives heated water from the receiver r through the pipe c. f

What l claim and desire to secure by Letters Patent is i l. Apparatus for withdrawing aerated vapor and condensate from steam condensers, comprising a steam jetdevice in communication with a condenser, areceiver, and a reciprocating pump, a passage leading from the steam iet to the receiver, a' passage leading from a water supply to the receiver, a passagey leading from the ,receiver to the pump, and a passage leading from the condenser to said pump, substantially as and for the purpose herein set forth.

2. .apparatus for withdrawing aerated vacondensate from steam condensers,

n -i device in communir, a receiver, and a receiver fr together with the waterandr common pipe e from which the water,`

reciprocating pump, a passage leading from the steam jet to the receiver, a passage leading from a water supply tothe receiver, a passage'leading from the receiver to one end of said pump and a passage leading from the condenser' to the other end of said pump, substantially as and for the purpose herein set forth.

3. Apparatus for withdrawing aerated vapor and condensate from steam condensers, comprising a steam jet device in communication with a condenser, a receiver, and a reciprocating pump, a passage leading from the steam jet to the receiver, a passage for conveying to the receiver water discharged from said pump, a passage leading from the receiver to the pump, and a passage leading from the condenser to said pump, substantially asand for the purpose herein set forth.

d'. Apparatus for withdrawing aerated vapor and condensate from steam condenser-s, comprising a steam jetdevice in communication with a condenser, areceiver, and a reciprocating pump, a passage leading from the Vsteam jet to the receiver, a passage for conveyin to the receiver water discharged from sai pump, a passage leading from the vreceiver to said pump, a passage leading .from the condenser to said pump, and a wat-er seal. in the last mentioned passage, substantially as and for the purpose herein set forth.

5. Apparatus for withdrawing aerated vapor and condensate from steam condensers,

comprising a steam jet device in communication with a condenser, a receiver, a reciprocating pumpa passage for conveying to the receiver water discharged from said pump, a second pump, a passage leadmg from the steam jet to the receiver, a passage leading from the receiver to the second pump, -a passage dleading from the receiver to the first mentioned pump, and a passage leading from the condenser to said latter.v pump, substantially as and for the purpose herein set forth.

6. Apparatus for withdrawing aerated vapor and condensate from steam condensers, comprising a steam jet device in communication with ai condenser, a receiver, two reciprocating pumps, a passage leading from the steam ]et to the receiver, passages leadingfrom the receiver to both pumps, a passage leading rom the condenser toene of Athe pumps, and a passage for conveying to the receiver Water discharged from' said last kmentioned pump, substantially as and for the purpose set forth.

` 7. Apparatus for withdrawing aerated vapor and. condensate from steam -condensers,

comprising la steam jet device in communi-- cationwiti a condensera a receiver, two reciprocating pumps, a passage leading from the steam jet to the-receiver, a passage leading from a water supply to the receiver, sepn tially crate passages leading from the receiver to each pump, means for supplying cooled Water to one pump, and a passage leading fronstl'ie condenser to the other pump, substantially and for the purpose herein ser forth.

8. Apparatus for withdrawing uci-ated vapor and condensate from steam condenscomprising a je device in communication with a condenser, a receiver, two reciprocating pumps, a passage leading from the steam jet to the receiver, separate passages ieading from the receiver/to euch pump, means for supplying cooled Water to one pump, a passage leading from the condense to the other pump, and a passage for conveying to the receiver water discharged from said last mentio'ncd pump, substanas and for ther purpose herein set forth. f v

9. Apparatus for withdrawing aerated vapor and condensate from steam condensers, comprising a steam jet device in communication with a condenser, a receiver, tivo reciprocating pumps, e passage leading from the steam jet to the receiier, a passage lead,- ing from a Water supply to the receiver,A separate passages ieading from the receiver to one pump, means for supplying cooled Water to said last mentioned pump, and passage leading from the condenser to the, other pump, substantially and for the purpose herein set forth. y

l0. Apparatus for withdrawing aerated vapor and condensate frome steam condenser, comprising asteam jet device in communication with a condenser, a receiver; two reciprocating pumps, a passage leading from the steam jet 'to the receiver, a passage leading from the receiverV to one end of a pump, a passage leading from the lower, por-r tion of the receiver to one end of a. pump, a passage leading from the condenser' to one pump, and a passage for conveying to the receiver Water discharged from said last mentioned pump, substantially as and for the purpose herein set forth.

l1'. Apparatus for withdrawing. aerated vapor and'condensate `from a steamcoudenser, comprising 'a steam jet device in communication with a condenser, a receiver, two reciprocating pumps, a passage leading from the steam jet to the receiver, a passage leading fromthe lowerv portion of the re `ceivcr to one end of a, pump, a passage .leadi ing from 4the condenser to an end of one pump, a passage ieading from the receiver to an end of vthe other pump, and a passage for conveying to the last mentioned passage and tothe receiver' water discharged from the pump connected to the condenser, for the purpose herein set forth.

12. Apparatus for withdrawing aerated vapor and condensate from a steam condenser, comprisingl a steau. jet devi'li-.e in communication with a condenser, a receiver, e

' end of the pump,

reciprocating pump, a passage leading 'from the steam jet to the receiver, a passage lead-v ing from the iowerporticm of the receiver to one -end of the from the condenser to one end-of the pump, a passage leading from the receiver to one ing to the last mentioned passage and to the receiver Water discharged rfrom the pump connected 'io' the condenser,for the purpose herein set forth. 'n v i3. Apparatus for withdrawing aerated vapor and condensate from steanrcondens ers, comprising asteani i tion with a condensena receiver, two recip rocating pumps, a passage. leading from the steam jet to ceiver to one end of each pump, a passage leading from the condenserte an end of one pum'p, a passage leading' from the .receiver to an end of the other pump, and a passage for conveying to the last mentioned passage and to the receiver Water discharged from the pump connected to the cond ir, for the purpose herein set forth.

le. Apparatus for rWithdrawing aerated vapor and condensate from steam condens` ers, comprising a steam jet communicating with condenser, areceiver, tivo'reciprocating pumps., a. pipe leading from'the steam jet to the receiver, a pipe leading' from the hott-om of the receiver to one end of each pump. a pipe leading from the condenser to the other end of one of the pumps, a pipe leading from the receiver to the remainingpump end, a well into which discharges the outlet o't the pump connected to the con@ denser, and apipe for conveying Water .from the well to the last .mentioned pipe and, to the receiver, for the purpose set fori-h.

l5. ppuraus 'for Withdrznving aerated vapor and condensate from steam condeirers, comprising a steam jet communicating with acondenser, a receiver, two vertical rcciprocating pumps, a pipe leading from the steam jet. to the ref :eive-r, a. pipe 4ieading' from 'the bottoni of the receiver to the uppermost ends of each pump, a pipe leading from lfhe condenser to one o he loe'ermost pump ends, a pipe ieadin from the receiver to the remaining pump end, a Well into which discharges the outlet of the pump con nected to the condenser, and e pipe'for con-'- veying water from the weii to the last mentioned pipo and. to the rece'iif'er, for the pur pose herein set forth.

16. Apparatus for withdrawing aerated vapor and condensate from sceau; condensers, comprising a steam jet communicating with a condenser, a receiver, two vertice? ciprocating pumps,l a pipe leading from the steam jet to the receiver, a pipe leading from the bottom of the receiver to the uppermost ends of each pump, a pipe ieading from the pu mp, a passa leading' and a passage 'for,rioni-@5.xA

jet in cmimumica-4 the receiver, a passage leading from the lower portion of the from the receiver to the lowermost pump,

. ends, a well intov which discharges the outlet or' the pump connected to the condenser, and a pipe for conveying water fromv the wellito one of the last mentioned pipes and to the receiver, for the purpose herein set comprising a steam jet two pumps,

forth.

17. vapor and condensate from steam condensers, comprising a steam jet communicating with a condenser, a receiver, two vertical reciprocating pumps, a pipe leading-from the steam jet to the receiver, a pipe leading from the bottom ofthe receiver to the uppermost ends of each pump, a pipe leading from the condenser to one of the lowermost pump ends, a water seal in said pipe, a pipe leading from the receiver to the remaining pump end, a passage between the'lowermost ends of the a well into which discharges the outlet of the pump connected to the condenser, and -a pipe for conveying water from the well to the last mentioned pipe and' to .the receiver, for the purpose herein set' forth.

"18. Apparatus for withdrawing aerated vapor and condensate from steam condensers, comprising a steam jet communicating with a condenser, a receiver, two vertical reciprocating pumps, v.jet to the receiver, a pipe leading from the bottom of the receiver to the uppermost ends of each pump, a pipe .leading from the condenser to one of the lowermost pump ends, a water seal in said pipe, a pipe leading from the receiver to the remaining` ump end, a passage between the lowermost ends of the two punips, a control valve in said passage, a well into which discharges the outlet of the pump connected to the condenser, and a pipe for conveying water from the Well to the last mentioned pipe and to the receiver, for the purpose herein set forth.

19. Apparatus for withdrawing aerated vapor and condensate from steam condensers, communicating with a condenser, a receiver, two vertical reciprocating pumps, a pipe leading from the steam jet to the receiver, a. pipe leading from the bottom of the receiver tothe uppermost endsv of each pump, a pipe leading from the condenser to one of the lowermost pump ends, a water seal in said pipe, a b v-pass control valve for said seal, a pipe leading from the receiver to the remaining pump end, a passage between the lowermqst chambers of the two umps, a control valve in said passage, a wel in the'discharge outletof the pump vwith which the condenser is connected, and a pipe for conveying water from the weil to the last'.n ientioned pipe andtc the receiver, for the purpose herein set forth.

20. Apparatus for withdrawing aerated l 3 .1. i 1 I5 vapor and condensate iron! steam condensate,

Apparatiis .for withdrawing aerated a pipe leading from the steam comprising a steam jet, a receiver, and a reciprocating pump so arranged that the two ends of its barrel on either side of the piston can be used for the drawing in and subsequent discharge of not less than two of the following iuids namely the condensate from the condenser and the aerated vapor and water from the receiver, one of thef-e three fluids being drawn into one end of. ne pump, and one or both of the others into the other end, the whole substantially as described.

21. Apparatus for withdrawing aerated 'vapor and condensate from steam condensers,

comprising a steam jet, a receiver, a reciprocating pump, two separate passages for the withdrawal of the aerated vvapor and water from the receiver respectively7 into the two ends of the pump barrel one passage on either sidel of the piston, a passage for the withdrawal of condensate from the condenser into one of said ends, and a water seal in the passage communicating between the pump andthe condenser, the whole substan tially as described.

22. Apparatus for withdrawing aerated vapor and condensate from steam condensers, comprising a steam jet, a receiver, a reciprocating pump, another pump, a passage for the withdrawal of the condensate from the condenser into one end of the barrel of the reciprocating pump, a passage for the withdrawal of the aerated vapor from the receiver into the other pump and a separate passage for the withdrawal of water from the receiver into an end of one of the pump barrels other than the ends Ainto which the condensate and aerated vapor are drawn, the whole substantially as described'.

23. Apparatus for withdrawing aerated vapor and condensate from steam condensers, comprising a steam jet, a receiver,.two reciprocating pumps, a passage for the withdrawal of the condensate from the condenser into one end of the barrel of one pump, a passage for the Withdrawal of the aerated vapor from the receiver into an end of the barrel of the second pump,'and a separate passage for the withdrawal of the water from the receiver into the remaining ends o both of the pumps, the whole substantially as described.

24. Apparatus for withdrawing aerated 3 moms which enters said receiver from the steam of Durham, Englandithis eighteenth dey of jet, and a passage for the introduction of August 1914.

another portion of the condensate into the Y passage conveying the aerated vapor to the DONALD BARNS MORISON' second pump, the Whole substantially as de- Witnesses: y Y

scribed. JAMES GUNN,

Signed at WestJ Hartlepool, in the county VVILLXAM ROBERTSON LAING.

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