US1558220A - Vapor condenser - Google Patents

Description

Oct. 20,1925. 1,558,220

K. BAUMANN VAPOR QONDENSER Filed Aug. 13, 1920 2 Sheets-Sheet 1 "ATE? caaztk,

E g 3 Karl baumc z rgg ATTORNEY Oct. 20,1925. 1.558220 K. BAUMAN N VAPOR CONDENSER Filed Aug. 13, 1920 ZSheets-Sheet 2 Bur! beam 2 ATTORNEY Patented 0st. 2t), 1925 UNITED STATES PATENT QFFIQE.

WESTINGHOUSE AND rrarreraerunrive COMPANY, A ooaronA'rIioN OF PENNSYLVANIA.

VAPOR CONDENSER.

Application filed August 13, 1320. Serial No. 493,256.

To a?! whom it may concern.

Be it known that I, KARL BAUMANN, acitizen of the Confederation oi Switzerland, and a resident or' Urmston, in the county of Lancaster, England, have invented a new and useful. Improvement in Vapor Condensers, of which the following is a specitication.

This invention relates to vapor condensers and has for its object to construct an improved apparatus of the kind in which the air in its passage from the condenser to the dry air pump or extraction apparatus is passed through a device wherein it is cooled by water, the temperature of which has been reduced by evaporation in a suitable evaporator.

According to the invention the water used in the cooling device consists of condensate from the condenser or any other kind of water suitable for make-up, and after cooling the air passing from the condenser, is wholly or partly returned into the con denser or hot well.

The accompanying drawings are digrammatic representations illustrating various forms of apparatus constructed in accordance with the invention.

Referring to said drawings, a condenser is shown at 1 with a hot well and a condensate extraction pump 3. Air is extracted from the condenser through the pipe -IL and passes through a cooling device 5 to an air extracting apparatus such as an ejector (not shown) which is connected to the outlet 6 of the cooling device. The water which is utilized in the cooling device 5 is supplied from the condensate extraction pump 3 through the pipe 7 to an evaporator 8, and is there cooled by evaporation, the steam which is evaporated being compressed by means of a steam jet 9 through the pipe 10 into the condenser l. The water which leaves the cooling device 5 after cooling the air passing through the same enters thehot well 2 by the pipe 11.

The cooling device 5 may be of any suitable description, and in the example shown in Fig. 1, the water from the evaporator 8 is delivered on to a tray from which it overflows on to an annular shelf and thence overflows falling downwards to the bottom of the device into the opening of the pipe 11. The direction of flow of air through the cooling device is contrary to that of the pater flow so as to ensure a thorough coolmg.

In Fig. 2 and in the remaining figures of the drawing, the cooling water is shown as passing from the evaporator 8 through perforations 1n the bottom thereof in the form of rain through which the air to be cooled passes upwards from the inlet pipe 4 to the outlet pipe 6 of the cooling device. In order to obtain low steam consumption in the steam ejector 9, the water entering the evaporator 8 should be as cool as possible. and in Fig. 3 a cooling device 12 is shown through which the water from the condensate pump 3 is passed before being admitted to the evaporator b. Said cooling device is of the surface type, and the water passing tl'ierethrough is cooled by circulating water from the air cooling device 5 which enters by the pipe 11 and passes by the pipe 13 to the hot well 2.

In the arrangement shown in Fig. water supplied through the pipe 'I to the evaporator 8 is mixed with a part of the water coming from the cooling device 5 through the pipe 11, an ejector 14 operated by water troin the condensate pump 3 be 1, the

ing provided for this purpose. The ejector 14-. may be operated by water from the boiler feed pump or by a suitable supply of make up water from another suitable source. The water operating the ejector 14 may be cooled before reaching the ejector by being passed through a cooling device 15 which is shown in Fig. 5 as being of the surface type cooled by water passing from the cooling device 5 on its way to the hot well 2'.

Although the cooling devices 5 are indicated in the drawings as being of the jet or mixed type, coolers of the surface type may be employed if desired.

High pressure steam may be used for operating the ejector 9, but preferably low pressure steam is employed for this purpose in which case it may be obtained from auxiliary engines or from a stage of the main engine or auxiliary engine; Instead of leading the discharge from this ejector direct into the condenser, the heat contained in the same therein may be recovered by condensing the steam in a surface or jet heater as described for example in the specification of Letters Patent No. 105,595.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is l. The combination with a condenser, of an air withdrawal conduit leading from the condenser to an evacuation pump, a heatinterchanger interposed in said conduit, and means for passing water through said heatinterchanger to cool the air prior to its delivery to the pump, and means for cooling said water prior to its delivery to said heatinterchanger, comprising a chamber into which said water is delivered and an auxiliary evacuation pump for maintaining a low absolute pressure in said chamber for effect ing a vaporization of a portion of the water passing through the chamber.

2. The combination with a condenser, of an air withdrawal conduit leading from the condenser to an evacuation pump, a heatinterchanger interposed in said conduit, and means for passing water through said heatinterchanger to cool the air prior to its delivery to the pump, means for cooling said water prior to its delivery to said heat-interchanger, comprising a chamber into which said water is delivered and a steam jet ejector for maintaining low absolute pressure in said chamber for effecting a vaporization of a portion of the water passing through the chamber, and means for deiivering the exhaust fluids from said ejector into the con denser.

3. The combination with a condenser, of an air withdrawal conduit leading from the condenser to an evacuation pump a heatinterchangcr interposed in said conduit, means for witl'idrawing condensate from the condenser and passing it through said heat interchanger to cool the air prior to its delivery tothe pump, means "for coolingsaid condensate prior to its delivery to said heat interchanger, comprising a chamber into which said condensate is delivered and an auxiliary evacuation pump for maintaining a low absolute pressure in said chamber for effecting a vaporization of a portion of the condensate passing therethrough.

at. The combination with a condenser, of an air withdrawal conduit leading from the condenser to an evacuation pump, a heatinterchanger interposed in said conduit, means for withdrawing condensate from the condenser and passing it through said heatinterchanger to cool the air prior to its delivery to the pump, means for cooling said condensate "101' to its delivery to said heatinterchanger, comprising a chamber into which said condensate is delivered and a steam jet ejector for maintaining a 10W absolute pressure in said chamber for effecting a vaporization oi a portion of the condensate passing therethrough, and means for delivering the exhaust fluids from said ejector into the condenser.

5. The combination with a condenser, of an air withdrawal conduit leading from the condenser to an evacuation pump, a heatinterchanger interposed in said conduit, means for withdrawing condensate from the condenser and passing it through said heatinterchanger to cool the air prior to its delivery to the pump. means for returning a part of the condensate discharged from said l1eat-interchanger with. the condensate from the condenser to the heat-interchanger, and means for delivering the remainder of the condensate discharged from said heat-interchanger to the condenser.

6. 2110 combination with a condenser, of a n air withdrawal conduit leading from the condenser to an evacuation pump, a heatinterchanger interposed in said conduit, means for withdrawing condensate from the condenser and passing it through said heatinterchanger to cool the air prior to its de livery to the pump, means for returning a part of the condensate discharged from said heat-interchai with the condensate from the COIldFZiSQi to the heat-interchanger, means for delivering the remainder of the conden ate discharged from said heat-interchanger to the condenser, and means for causing); the said remainder of the condensate to flow in heat-interchanging relation with respect to the condensate passing from the condenser to the heat-interchanger.

7. The combination with a vapor condensing apparatus. of conduit means for leading uncondensed fluids from the said apparatus to an evacuation mechanism, means for withdrawing condensate from the said apparatus, means for passing at least a part of the withdrawn condensate through a portion of said conduit means in a direction counter to that of the flow of uncondensed fluids therethrough, and means for separately delivering the condensate to the condenser and the uncondensed fluids to the evacuation mechanism.

8. The combination with a vapor condensing apparatus, of conduit means for leading uncondensed fluids from the said apparatus to an evacuation mechanism, means for withdrawing condensate lrom the said apparatus, means for co-mingling the uncondensed fluids in heat interchanging relation with at least a portion of the condensate being withdrawn, and means for separately delivering the condensate to the condenser and the uncondensed fluids to the evacuation mechanism.

9. The combination with a vapor condensing apparatus, of conduit means for leading uncondensed fluids from the said apparatus iii to an evacuation mechanism, means for Withdrawing condensate from the said apparatus, means for bringing the uncondensed fluids into heat-interchanging relation to at least a portion of the condei'isate being vrithdrawn, and means for cooling the condensate by evaporation prior to it; brought into heat-interchanging relation to the uncondensed fluids, whereby a cooling of the uncondensed fluids passing through said conduit means is effected prior to their delivery to the evacuation mechanism.

10. The combination with a vapor condensing apparatus, of conduit means for leadin g uncondensed fluids from the said apparatus to an evacuation mechanism, means for Withdrawing condensate from the said apparatus, means for bringing the uncondensed fluids into heat-interchanging relation to at least a portion of the condensate being Withdrawn, means for cooling the condensate by evaporation prior to its being brought into heat-interchanging relation to the uncondensed fluids, and means for returning at least a portion of the condensate subsequent to its Withdrawal from heat-interchanging relation to the uncondensed fluids to the vapor condensing apparatus.

11. The combination with a vapor condensing apparatus, of conduit means for leading uncondensed fluids from the said apparatus to an evacuation mechanism, means for Withdrawing condensate from the said apparatus, means for bringing the uncondensed fluids into heat-interchanging relation to at least a portion of the condensate being Withdrawn, means for cooling the condensate by evaporation prior to its being brought into heat-interchanging relation to the uncondensed fluids, means for returning a portion of the condensate subsequent to its Withdrawal from the heat-interchanging relation to the uncondensed fluids to the con densate cooling means, and means for returning the remainder of the condensate from the heat-interchanging means to the vapor condensing apparatus.

12. The combination with a vapor condensing apparatus, of conduit means for leading uncondensed fluids from the said apparatus to an evacuation mechanism, means for Withdrawing condensate from the said apparatus, naeans for bringing the uncondensed fluids into heatinterchanging relation to atleast a portion of the condensate being Withdrawn, means for cooling the condensate by evaporation prior to its being brought into heat-interchanging relation to the uncondensed fluids, means for returning a portion of the condensate subsequent to its Withdrawal from the heat-interchanging relation to the uncondensed fluids to the condensate cooling means, means for returning the remainder of the condensate from the heat-interchanging means to the vapor condensing apparatus, and means for bringing said remainder of condensate on its Way to the vapor condensing apparatus into heatinterchanging relation to the condensate being delivered from the vapor condensing apparatus into heat-interchanging relation to said uncondensed fluids.

In testimony whereof, I have hereunto subscribed my name this 15th day of July, 1920.

KARL BAUMANN,

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