US967810A - Apparatus for withdrawing air and water from steam-condensers. - Google Patents

Description

D. B. MORISON.

APPARATUS FOR WITHDRAWI-NG-AIR AND WATER FROM STEAM GONDENSERS.

uruornon rmm 001215, 1908.

967,81 0. Q Patented Aug. 16, 1910.

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Patentd Aug. 16, 1910.

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D. B MORISON. I APPARATUS FOR WITHDBAWING AIR AND WATER PROM STEAM GONDENSERS.

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967,810. Patented Aug. 16, 1910.

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} D. B. MORISON. v APPARATUS FOR WITHDRAWING AIR AND WATER FROM STEAM GONDENSEBS,

APPLICATION FILED 001151608. Patented Aug. 16,

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

DONALD BARNS MORISON, HARTLEPOOL, ENGLAND.

APPARATUS FOR WITHDRAWING AIR AND WATER FROM STEAM- CONDENSERS.

To all whom it may concern.

Be it known that I, DONALD BARNS MoRI- SON, a subject of the King of Great Britain and Ireland, residing at Hartlepool, in the county of Durham, England, have invented Improvements in or Relating to Apparatus for Withdrawing Air, Vapor, and Water from Steam-Condensers, of which the following is a specification.

This invention relates to apparatus for Withdrawing and discharging air and vapor, and, it may be, water of condensation, from steam condensers, and is applicable to condensers working under a vacuum and in which the water of condensation and the mixture of air and vapor are withdrawn and discharged from the condenser through separate outlets, the condenser being of the surface contact, direct contact or water jet ejector types.

The principal object of the invention is to enable aerated vapor to be withdrawn from a condenser and discharged by means of a steam et in a more effective and advantageous manner than heretofore. The present invention is characterized for this purpose by the fact that the aerated vapor is withdrawn and discharged from the condenser by the action of a steam jet arranged behind and in series with a water jet ejector, the steam jet being arranged to discharge into the aerated vapor before the same reaches the water jet ejector. WVhen aerated vapor is withdrawn and discharged from a condenser by a steam jet and water jet ejector arranged as described, the minute particles of water resulting from the condensation of the steam are in a condition highly favorable to their being coated and supercharged with the air into which they are discharged, and of being by their kinetic energy, impelled forward and caused to combine or coalesce with each other and, in their momentarily supercharged condition, to be, by their momentum, driven into the water of the water jet ejector and be thereby discharged in a very effective manner. This utilization of the kinetic energy of the steam jet for causing the air to be efiectually absorbed and incorporated with the water of the water jet ejector, constitutes a technical effect of considerable practical value and is an important feature of the invention. This action is to be differentiated from the known ejector apparatus in which steam and water jets are arranged concentrically and near Specification of Letters Patent.

Application filed. October 15, 1908.

Patented Aug. 16, 1910.

Serial No. 457,880.

together in such a manner as to first combine to form a combined jet of steam and water which is then used to induce air and vapor to enter the ejector apparatus in a lateral direction from the condenser and be discharged thereby. In such an arrangement, water particles resulting from condensation of the steam jet cannot be supercharged with air before coming in contact with the water et and caused to coalesce and by their momentum be driven into and combined with the water jet so as to be thereby instantly and effectually discharged with the contained air according to the present invention, so that such apparatus cannot act very effectually to withdraw aerated vapor from the condenser. The action of the new aerated vapor ejecting apparatus is also to be differentiated from the action of a steam jet in the known arrangement of air pump system in which the steam from the steam jet used to withdraw air and vapor from a condenser is delivered into and condensed within an auxiliary condenser and the air withdrawn from the latter by a reciprocating or equivalent mechanically operated air pump. In the latter arrangement, the kinetic energy of the steam jet is uselessly dis sipated in the supplementary condenser and the heat in the steam from the steam jet is largely absorbed by the condensing water in such auxiliary condenser and discharged with such water, thereby involving thermal loss. On the other hand, by the present invention, not only are the water particles resulting from the condensation of the steam supercharged with air and their kinetic energy utilized to cause them to coalesce with each other and with the water in the water jet ejector but the latent heat of the steam from the steam jet and also the latent heat of the water vapor withdrawn from the condenser, is, to a large extent, absorbed by the water flowing through the water jet ejector and can thereby be conserved and usefully employed. It has been found by careful experiment that (a) the temperature of the water passing through the water jet ejector may be very considerably higher than the water of condensation in the condenser and that therefore this water can be passed through the water jet ejector and afterward be in part used as feed water for the boilers, with great thermal advantage, and (b) that the cooling'of this water, or such part thereof as is jet ejector, need onlybe resorted to when the amount of condensed water in the main condenser is curtailed by re'ason of the power of the engine being diminished, or' by the engine being stopped.

The water jet ejector may be of various kinds. It may comprise a static water spraying device, or a mechanically operated water spraying device of known kind; or a solid water jet device, or both a water spray- .ing device and a water jet device combined.

These devices are all hereinafter included in the term, water jet ejector.

In the case of direct contact condensers, the water of condensation may be discharged independently of the water jet ejector which 'may be supplied by other water. \Vhere however the water available for'use in the water jet ejector is unfit for use in boilers, as in the case of sea water on ship board, the water supplied to the water jet ejector may, with advantage, be water of condensation that is in partrepeatedly used.

In some cases the water may be supplied to the water jet ejector by a pump either from a vessel orreservoir into which it is de-.

livered by another I1pump from the condenser, or from a ta into which the water jet ejector delivers. Sometimes the water may be cooled before being delivered into the water jet ejector.

The condensed steam water may in some cases be withdrawn from the condenser by head and pressure pumps through an elevated pipe or receiver whereby an artificially produced head or pressure of water can be obtained when such a head or pressure is necessary but is not conveniently obtained with known arrangements, for the satisfactory working of the system;

In order to maintain an approximately a constant and adequate supply of water to the water jet ejector under varying conditions of load in the main condenser, the dischar e pipe from the said water jet ejector may he provided with means such as a valve or pum some cases, the inducing action of this water can be utilized in lieu of, or as an auxiliary to, thesaid pump for causing the discharge of condensed steam water from the condenser to the receiver and be at the same charged into the rece ver, the steam may be condensed in the receiver by contact with condensed steam water simultaneously delivered into the receiver, preferably in the form of a spray. The air and unc'ondensed which, discharges the said water either directly or through a cooler; or in,

vapor maybe led from the receiver to the I water jet ejector with or without theaid of .a jet of steam, the water being drawn ofl from the receiver by a pump, and water being supplied to the water jet ejector by any convenient means, as by another pump.

Ifthe condensed steam watersupplied from-thej-receiver be discharged directly by a pressure pump, air and vapor may be withdrawn from the condenser, or from the receiver, or from each of these devices by, and be discharged through, a separate water jet ejector to which water may be supplied under pressure by any convenient means as by another pressure pump.

Apparatus according to the present invention is applicable to condensers of both the surface and jet types. The pum 5 may ad- -vantageously be of the oentri gal type,-

but may, if desired, be of the reciprocating or other suitable type. The water jet ejector mav be of the single or multiple nozzle type,

and be providedwith the tisualfittings; If

desired, two or more water jet ejectors may be used, arranged in parallel or in series, and the number used at any one time may be varied to suit the load on the condenser and the amount of air leakage.

In the accom anying drawings, Figures 1 to 7 inclusive, slow, in elevation, various arrangements of ap aratus embodyin the present invention, t e several figures eing, for simplicity, shown more or less diagrammatically.

According to Fig. 1, a is acondenser of the surface type having an outlet ipe b for air and vapor and a separate out etpipe 0 for water of condensation. g is a steam nozzle whereby a jet of steam can be caused to enter the pipe I) and become mixed with the air and vapor therein. The pipe 6 is connected to a water ejector comprising,- in this example, a su plementary spraying jet nozzle i provide with a water inlet pipe (1, and a main water jet nozzle e arranged in series with the nozzle (1 and having a water inlet a.

Tiither the water spraying nozzle d, or the water jet nozzle e, may be used independently, or both may be used together in series coalesce and by their momentum are driven into the water of the water jet ejector, as hereinbef ore described, the whole t ien travelm" onward at a high velocity through the discharge pipe f, the discharge being assisted by the water jet issuing through the nozzle e, if this nozzle be'also used.

Fig. 2 shows air and vapor withdrawing apparatus according to the invention combined with a steam condenser from .whieh the condensed steam water is withdrawn by head and pressure pumps. In this example,

the air and vapor outlet pipe Z) with steam.

' from the main condenser and from the steam jet, when the latter is used, and when it is important that this water loss should not take place, as in marine installations, the water supplied to the ejector may be previously cooled condensed steam water. In the example (Fig. 2), such water is delivered to the ejector ethrough pipe 6 by a centrifugal pump h, the resulting mixture of condensing water, condensed steam water and air being discharged through the pipe f into an open tank 1" whence the water flows through a pipe j into a cooler located at the bottom of but separate from the main condenser on, and thence through a pipe m to the pump h for re-use. Excess of water, due to the condensation of the vapor withdrawn with the air from the condenser a, escapes from the tank i through an overflow pipe n. Condensed steam water is withdrawn *from the main condenser a through a pipe 0 by a head pump 10 which delivers it through a pipe 9 into a raised receiver 1" which is connected to the top of the condenser a by a pressure equalizing pipe .9, and from which the water passes downward through a pipe t to a pressure pump u for delivery through a pipe 0) into a feed water tank w.

The condensed steam water may be de livered to the water jet ejector by a pump which obtains the water for this purpose from the receiver into which the condensed steam water from the condenser is discharged by another pump, additional water being however delivered to the water jet ejector from the cooler. An arrangement of this kind is shown in Fig. 3, the condensed steam water, which is delivered from the receiver 1 to the ejector (Z by the pump a, being used in the ejector d, which, as in Fig. 1, is placed in series with the ejector e, which receives cooled water from the cooler is through the pump 72..

As in Fig. 2, the pump p withdraws water of condensation from the condenser a through the pipe 0 and discharges it through the pipe q, into the receiver rwhich is connected to the top of the condenser by a pressure equalizing pipe 8, and the air and water delivered from the water jet ejector are delivered through pipe f into the tank 2' from which the air escapes and whence some of the water returns through pipe cooler is and pipe m to the pump it for reuse, the remainder of the water escaping through the overflow pipe or.

In the modified arrangement shown in Fig. 4, only one pump, namely h, is employed. The air and vapor are discharged by the steam jet 9 from the condenser a to the water jet ejector e which discharges into the tank i whence the water passes into the cooler 72, which is here shown as being independent of the condenser, but may be constructed integrally with it if desired. Thence the water passes by a pipe m to the pump h by which it is delivered through a pipe 6 to the water jet ejector e. The pipe 0 leads from the bottom of the condenser to a water jet device 3 where the kinetic energy of the water delivered by the pump it through the pipe (2 is utilized, by an inducing and propelling action, to deliver the condensed steam water from the condenser a into the main ejector e.

In the modified arrangement shown in Fig. 5, a steam jet at g is used to discharge air and vapor by pipe 6 from condenser ato receiver r to which the water of condensation from condenser a is also delivered by pump 79 through pipes 0 and g, steam from the jet 9 being simultaneously condensed in the said receiver. Air and vapor are withdrawn from the receiver by the water jet ejector e which receives cooled water by way of the pipe 6 and discharges the air and vapor through pipe f into tank 2', whence the water flows by pipe j into the cooler 70. Water is withdrawn from the cooler by pump h, through the pipe m, and again delivered at a suitable pressure to the water jet ejector c. Any surplus water produced in the water jet circulating system by condensation of steam, can flow by pipe n from tank 2' to the boiler feed tank w into which pump at, which withdraws the water from the receiver 1 by pipe t, discharges this water through pipe Although it is usually desirable for thermal reasons to pass the condensed steam water from the condenser to the boiler feed tank without cooling it, as in Figs. 2 and 5, it may sometimes be desired to cool the condensed steam water and thereafter employ it in the receiver or water jet ejector. For example, in Fig. 6, the cooler is located in the bottom of the condenser a and consists of an open well. The condensed steam water falls into this well where it is cooled and is discharged by pump 72 into receiver a" into which the air and vapor are conducted from the condenser 64- through pipe 6 provided with a steam jet 9 as in Fig. 5, the steam and vapor being condensed to a greater or less extent in receiver 1 by the water simultaneously admitted thereto from pump 9.

Air and uncondensed vapor passfrom receiv'er through pipe 19 into the water jet ejector a into which the cooled water from the receiver is discharged by pump u and whence it passes with the air to the tank 2'. From this tank the required proportion of the water may be led back to the cooler 70 by way of the pipe j as before, the surplus passing away by the overflow pipe at.

As will be seen the arrangement shown in Figs. 2, 3, 5 and 6 according to which the condensed steam water is withdrawn from the condenser a by a head pump 72 and delivered into an elevated receiver 1' whence the water is drawn off by a pressure pump'u and delivered to a feed water tank to or elsewhere, forms a convenient means for artificially producing a head or pressure of water in cases where this is necessary for the satisfactory Working of water pumps.

used for withdrawing condensed steam water from a steam condenser. Such an arrangement can advantageously be used in cases where air and Vapor are withdrawn from the main condenser by apparatus other than the improved apparatus hereinbefore described for this purpose.

In the modified arrangement shown in Fig. 7, the receiver r is not connected to the condenser by an equalizing pipe, and the air and vapor are drawn from the condenser and discharged into the receiver by means of a steam jet 9 suitably disposed in pipe 6 the air and vapor being withdrawn through the pipe .2 by any suitable air extractor. The condensed steam water is delivered into the receiver as before by the pump 39, and when the vacuum in the receiver is less than that in the condenser and the boiling point therefore higher, this water can advantageously condense steam from the jet as well as the steam coming with the air from the condenser. All the water condensed in the receiver is withdrawn by way of the ipe t by the water pump a, or may be with rawn by the same air pump which withdraws air and vapor. In the latter case, the air and vapor may, if desired, be withdrawn from the receiver by a reciprocating air pump by the same pipe that withdraws the water.

What I claim is 1. In steam condensing plant, the combination with a main steam condenser of a conduit connected to the air and vapor outlet of said condenser, a steam jet device arranged to deliver steam into said conduit in a direction away from said air and vapor outlet, and means for delivering liquid into said conduit at a part thereof in advance of said steam jet device and in a direction away from said device.

2. In steam condensing plant, the combination with a main steam condenser of a fluid ejecting device operative by liquid flowing therethrough, means for causing liquid to flow in a continuous manner through said fluid ejecting device, a conduit between the air and vapor outlet of said condenser and said fluid ejecting device and forming a continuous passage with the latter .and a steam jet device arranged to deliver steam into said conduit in a direction toward said fluid ejecting device.

3. In steam condensing plant, the combination with a main condenser and a conduit for leading air and vapor therefrom, of a water ejecting device connected to said conduit and forming a continuation thereof, means for causing water to flow continuously through said water e'ecting device and a steam 'et device arrange to deliver steam into sai conduit in a direction toward said water ejecting device so that the resulting superaerated water particles resulting from the condensation of the steam will be driven into the water flowing through the water ejecting device and be discharged with the issuing water.

4. In steam condensing plant, the combination with a main condenser and a conduit for leading air and vapor therefrom, of a water ejecting device connected to said conduit so as to form a continuation thereof, a water cooling device, means for causing water to circulate through said water cooling device and water ejecting device, and a steam jet device arran ed to deliver steam into said conduit in a irection toward said water ejecting device.

5. An air withdrawing and discharging device havin an inlet at one end adapted to be connecte to a steam condenser and a water discharge outlet at the other end and comprising a water jet ejector and a steam jet device terminating within said device and directed toward said water et ejector.

6. An air withdrawin and discharging device comprising an inIet pipe for air, a steam jet device extending into said pipe and a water jet ejector having an inlet for water, said steam jet device and water jet ejector being co-axially arranged.

7. An air withdrawing and discharging device com rising an air conduit havin a steam jet device extending into it, and a water jet ejector having a water spraying device into which air can be discharged by the action of steam issuing from said steam jet device.

8. An air withdrawing and discharging device comprising an air inlet and outlet pipe with co-axially arranged steam and water ejecting devices.

9. An air withdrawing and discharging device comprising an air inlet pipe, a steam nozzle extending into said pipe and a water spraying device arranged in line with said steam nozzle and having an outlet for discharge of the combined jet ofair and water produced in said withdrawing device.

10. An air withdrawing and discharging device comprising an inlet pipe, a steam nozzle therein,a water spray-nozzle ejector and a water jet nozzle, said nozzles being arranged in series with each other.

"11. An air withdrawing and discharging device comprising a pipe with steam inlet nozzle, a water spraying nozzle and a water jet nozzle, said nozzles being arranged co axially, the said pipe having a lateral inlet for air and the water nozzles having separate inlets for water.

12. An air and vapor withdrawing and discharging device comprising a steam ejecting device with separate inlet for air and vapor, a water spraying nozzle and a water jet nozzle, these parts being arranged coaxially and in series with each other in the order mentioned with separate water inlets for the water nozzles and a common outlet for combined air, vapor and water.

13. An air and vapor withdrawing and discharging device comprising a straight pipe or conduit having at one end a lateral branch for connection to a steam condenser and a steam jet device extending co-axially into it, a water spray nozzle connected to the outlet end of said pipe 'and having a lateral inlet for water and a water jet nozzle connected to the outlet end of the water spray nozzle and having a lateral inlet for water and a coaxial outlet for a combined jet of air, vapor and water.

14:. The combination with a steam con denser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be dis charged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof, and means for causing Water to flow through said water jet ejector.

15. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connect-ed to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof, a tank into which said water jet ejector discharges, and means for causing water to flow from said tank back into said water jet ejector.

16. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet'pipe so as to form a continuation thereof, a water cooling device, and means for causing water to flow through said water cooling device and water jet ejector.

17. The combination with a steam condenser having separate outlets for air and .vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof, a tank open to the. external atmosphere and into which said Water jet ejector discharges, a water cooling device connected to said tank, and means for causing water to circulate through said water cooling device, water jet ejector and tank.

18. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided With a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof, a tank open to the external atmosphere and into which said water jet ejector discharges, a water cooling device connected to said tank and arranged at the base of said condenser, and means for causing water to circulate through said water cooling device, water jet ejector and tank.

19. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected tosaid outlet pipe so as to form a continuation thereof, and means for delivering water from said condenser into said water jet ejector.

20. The combination With a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof and comprising multiple nozzles, and means whereby water can be caused to flow through one or other or each of the nozzles at will.

21. The combination with a steam con denser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof, and comprising a water spraying jet nozzle and a water jet nozzle arranged in series with each other and with said outlet pipe and steam jet device, and means for causing water to flow through either or both of said water nozzles at will.

22. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be dis- ,vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof and comprising multiple nozzles, a tank into which said water jet ejector discharges, a water cooling device connected to said tank, means for causing water to circulate through said water cooling device, part of said water jet ejector and said tank, and means for delivering water from said condenser through another part of said water jet ejector.

24. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof, a tank into which said ejector discharges, a receiver in communication with said condenser and water jet ejector, means for causing water to flow from said tank, through said water jet ejector, means for delivering water from said condenser into said receiver and means for withdrawing water from said receiver.

25. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof and comprising a water spray jet nozzle and a water jet nozzle arranged in series with each other and with said pipe and steam jet device, a tank into which said water jet ejector discharges, a water cooling device connected to said tank, means for causing water to circulate through said water cooling device, Water jet nozzle and tank, and means for causing water to flow from said condenser through the water spray jet nozzle.

26. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of an air and vapor outlet pipe connected to the air and vapor outlet and provided with a steam jet device whereby steam can be discharged into said pipe, a water jet ejector connected to said outlet pipe so as to form a continuation thereof and comprisin multiple nozzles, a tank into which said water jet ejector delivers, a water cooling device arranged at the base of said condenser and connected to said tank, a pump for causing water to circulate through said cooling device and one of the nozzles of said water jet ejector, a receiver connected to said condenser, a pump for withdrawing water from said condenser and deliverin it into said receiver and a pump for with rawing water from said receiver and delivering it into another nozzle of the water jet ejector.

27. The combination with a steam condenser having separate outlets for air and vapor and for water of condensation, of a receiver connected to said condenser and into which air and vapor can pass from said condenser means for producing a partial vacuum in said receiver, means for delivering water of condensation from said condenser into said receiver and means for withdrawing fluid from said receiver.

28. The combination with a steam condenser, of a water jet ejector, an air and vapor conduit connecting said ejector to said condenser, a vessel or receiver, a pump for withdrawing water of condensation from said condenser and delivering it into said receiver, and a pump arranged to continuously withdraw water from said receiver and force it through said ejector.

29. The combination with a steam condenser, of a water circulating system including a water jet ejector having an air and vapor inlet connected to said condenser, a vessel into which water of condensation is delivered from said ejector and a pump receiving water from said vessel and discharging it through said ejector.

30. The combination with a steam condenser, of a water circulating system including a water jet ejector connected to the air and vapor outlet of said condenser, a vessel having an outlet for surplus water and into which said ejector discharges, a pump for circulating water through said system and means for delivering water of condensation from the condenser to the circulating system. c 31. The combination with a steam condenser, of a water circulating system comprising a vessel, a water conduit forming with said vessel a continuous circuit, a water jet ejector arranged in said circuit and connected to the air and vapor outlet of said condenser, a pump arranged to cause water to' circulate through said conduit and ejector and discharge into said vessel, and means for delivering water of condensation from said condenser into said circuit.

32. The combination with a steam condenser, of a closed receiver arranged at a higher level than the bottom of said condenser and in free communication with said condenser, a pump into which water flows from said condenser and which delivers the water into said receiver, and a second pump of the centrifugal type into which water flows from said receiver and by which such water is discharged, said second pump being placed at a sufficient distance below said receiver to produce the head of water on its inlet side necessary for the uniform and reliable working of a centrifugal pump.

33. The combination with a steam condenser, of a tank having an outlet for excess water, a water jet ejector arranged to withdraw air from said condenser, a pump receiving water from said tank and delivering it to said ejector, said ejector delivering air from the condenser and water from the pump into said tank and a pump for delivering water of condensation from said condenser to said tank.

- 34. The combination with a steam condenser having separate outlets for air and vapor and for Water of condensation, of an air outlet pipe with steam jet device connected to the air and vapor outlet, a water jet ejector connected to said outlet pipe so as to form a continuation thereof and into which aerated condensed steam particles are directly delivered by their kinetic energy, a tank into which said water jet ejector delivers, a water cooling device connected to said tank, a pump adapted to cause water to circulate through said water cooling device, part of the water et ejector and tank, a receiver connected to said condenser by a pressure equalizing pipe, a pump adapted to withdraw water from said condenser and deliver it into said receiver, and a pump adapted to withdraw water from said receiver and deliver it into another part of said water jet ejector.

35. The combination with a steam condenser of a water jet ejector connected to the air and vapor outlet of said condenser, a tank into which said ejector discharges and means for circulating water through said ejector and tank.

36. The combination with a steam condenser of a water jet ejector connected to the air and vapor outlet of said condenser, a tank into which said ejector discharges and which receives water of condensation from said condenser, and a pump for circulating water through said ejector and tank.

37. The combination with a steam condenser and a vessel, of a water circulating system comprising a water conduit arranged to form with said vessel and the lower partof the interior of the condenser a continuous circuit, a water jet ejector arranged in said circuit and connected to the air and vapor outlet of said condenser and a pump arranged to circulate water through said circuit.

Signed at est Hartlepool in the county of Durham England this fifth day of October 1908.

DONALD BARNS MORISON.

Witnesses C. J. Snow, H. BOWEN.

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