US1372926A

US1372926A - Steam surface condenser

Info

Publication number: US1372926A
Application number: US317190A
Authority: US
Inventors: Audouin Jean Frederic Horace
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-08-13
Filing date: 1919-08-13
Publication date: 1921-03-29
Anticipated expiration: 1938-03-29

Description

J. F. H: AUDOUIN.

STEAM SURFACE CONDENS ER. APPLICATION FILED ue.13,1919.

1,372,926o Pa t d Mar. 1921.

4 SHEETS T 1.

J. F. H. AUDOUIN. STEAM SURFACE CONDENSER.

APPLICATION FILED AUG. 13, 1919.

1,373,926u Patent/ed Mar. 29,1921.

4 SHEETSSHEET 2.

70 HOT WE I. F. H. AUDOUIN.

STEAM SURFACE (JONDENSER.

IPPLICA'I'ION FILED AUG. 13, I9I9.

IPatntsd Mar. 29, 1921.

4 SHEETSSHEET 3.

.AUDOUIN.

STEAM SURFACE CONDENSER.

APPLlCATiON FILED AUG. 13, l9l9. 1 3723260 Patented Mar. 29, 1921.

4 SHEETS-SHEET 4.

UNITED PATENT '(DFFHQEQ JEAN FREDEBIG HORACE AUDO'UIN, OF PARIS, FRANCE.

- STEAM SURFACE CONDENSER.

Application filed August 13, 1919. Serial No. 317,190.

T 0 all w ham it may concern:

Be it known that I, JEAN Fnnonnro H. AUDOUIN, a citizen of the Republic of France, residing at Paris, France, and temporarily in the city, county, and State of New York, have invented certain new and useful Improvements in Steam Surface Condensers, of which the following is a speclfication.

The object of this invention is to obtain an increase of efiiciency and economy by such a construction of the condensing apparatus as will involve a reduction of pump power, compared with the pump power required in prior steam surface-condensing apparatus, and that such reduction of pump power will be accompanied by an morease of efliciency; and that a less quantity of cooling water will be required. The diminution of cooling water is of practical importance where cooling water is scarce.

In the accompanying drawings forming a part hereof and illustrating the principle of this invention in the best mode now known to me of applying that principle,

Figure 1 is an end View of a steam turbine construction in operative connection with my new steam surface-condenser equipment.

Fig, 2 is a side view of what is shown in Fig. 1. r

,Fig. 8 is a side elevation of the preferred form of a steam surface-condenser forming part of my condenser equipment, portions being broken away to show interior parts. This view shows the construction both of my main and of my auxiliary surface-condenser, although the main surface-condenser will be very much larger in dimensions than the auxiliary surface-condenser.

Fig. i is a transverse cross-section of the steam surface-condenser at line e- L of Fig. 3.

The construction and mode of operation of my invention in that embodiment thereof now shown, are as follows:

Escaped steam from the turbine casing 1 travels downwardly through conduit 2 into the main steam surface-condenser casing 3 shown as a horizontal cylinder having an interior vertical tube-plate 4 spaced apart from each outer end wall 5 of the casing 3 and forming a cooling water chamber 6 between one end-wall and the thereto-adjacent tube-p-late, and forming anotherwater chamber 7 between the other end wall of the casing and the thereto-adjacent tubeplatc. The usual partition 6 is shown in chamber 6. The tube-plates support the open ends of a series of longitudinally-extending water-tubes 8 for the cooling water. The water tubes 8 are spaced apart both in the upward direction and transversely in each of two groups of water tubes, one group being at one side and the other group being at the other side of a vertical plane passed through the longitudinal axis of the casing 3. The several lateral rows of water tubes in each group are arranged sothat each row slants downwardly and outwardly, the inward water tubes of each group in the vertical direction being spaced apart so as to form a preferably \l-shaped steam space 9 between each group of water tubes. The outermost water tubes of the slanted rows thereof in each group are spaced apart from the adjacent side of the casing 3 by a distance which increases in the downward direction so as to form at each outward side of each group and below the lowest water tubes of each group, an approximately upstanding U-shaped clear chamber 10 for the water of condensation indicated by m in that chamber, and which water of condensation drips from the water tubes upon outwardly and downwardly Slanted plates 11 which are carried by the tube plates and which are severally located between each slanting row of the water tubes of each group of water tubes; these plates being out of contact with the under walls of the water tubes in order to permit unrestricted lateral and outward and downward drip or flow of the water of condensation falling from the water tubes.

The coolingv water is pumped into the chamber 6 by pump 12 the discharge side of which communicates by a conduit 13 with the chamber 6. The cooling water so taken The greater part of the water of condensation collected in said U-shaped chamber 10 of this main surface-condenser is pumped out by the condensate pump 15, the intake side of which is in communication with said U-shaped chamber 10 by a pipe 16. But the constantly-forming vapor from the water of condensation above the deposit ofwater of condensation indicated by m, in the bottom of easing 3, is continuously removed during the operation of the apparatus as a whole and during the time the water of condensation is forming, so that the volume of the water of condensation w to be removed by the condensate pump is greatly reduced. Such removal of the vapor out of easing 3 is effected .from' an outlet at '17 which is shown at the upper portion of one side of said U-shaped chamber 10, a conduit 18 connected with said outlet 17 leading to the intake side of a vapor pump shown as a double-acting pump 19 which requires but little power to operate. The discharge side of the vapor pump 19 communicates by a conduit 20 with the upper side of an auxilr ary surface-condenser of much smaller size than the main surface-condenser, the casing of this auxiliary surface-condenser being indicated by 3 and being of the same construction as the main surface-condenser, that is to say it has

end chambers

21 and 22 each formed by an end wall 23 of the casing 3 and a water tube plate 24:, the water tube plates supporting lengthwiseextending water tubes 25 between which are interposed outwardly and downwardly slanting plates 26 for conducting the water of condensation from the water tubes 25 into the U-shaped chamber 10 of the auxiliary surface-com denser.

Cooling water for the water tubes of the auxiliary condenser is taken into its chamber 21 through a branch pipe 27 of the main coolingwater supply pipe first mentioned. The deposit of water of condensation in the bottom of the U-shaped chamber of'this auxiliary surface-condenser, that is in the chamber 10 of the casing 3 is removed through a conduit 28 extending from the bottom portion of the casing 3 to the intake side of the condensate pump shown as driven by a motor M, the main cooling water pump being shown driven by a motor M.

The air accumulated in the auxiliary condenser casing 3 is removed through a pipe 29 which connects with an air pump 30 of high power, the pipe 29 connecting with the casing 3 of the auxiliary surface-condenser at the upper portion of its U-shaped cham ber 10, comparable to I the construction shown in connection with the main surface condenser casing 3. A motor M is shown for the double-acting vapor pump 19. The

air pump may be driven by any desired means.

Pump 19 is merely a vapor transfer pump and requires very little power. Pump 30 is an air pump which creates a high degree of vacuum in the auxiliary condenser and therefore in the main condenser.

By means i of: the auxiliary condenser, pumping of steam vapor from the main condenser is minimized; and the high-power air-pump has practically only dry air to denser. The water of condensation in the 5 main condenser has a temperature of about 200 Fahrenheit, and the pump 19 is to have a capacity sufficient for continual removal of the vapor in chamber 10 of the main condenser, and as such vapor is transferred into the auxiliary condenser and therein condensed into water, the air pump 30 may readily maintain the high vacuum in the

chambers

10 and 10 respectively of the two condensers. And because of the condensing effect of the auxiliary condenser, pump 19 may be a low-power pump. The system described has the further advantage of delivering through the discharge port 15 of the condensate pump very hot condensate to a hot-well so that the condensate can be' readily used for boiler-feeding purposes if desired. Nozzle 15 may discharge to waste.

The air pump 30 discharges to the atmosphere through its discharge opening at 30 What I claim is:

The combination of a main surface condenser with a low pressure vapor transfer pump; a smaller auxlhary surface condenser; a conduit connection between a vapor space of the main surface condenser and the intake side of such vapor pump; a conduit connection between such pump and a vapor space in the auxiliary surface condenser, the latter having a cooling water exit; a condensate pump having its intake side in conduit connection with a bottom condensate space In the main surface condenser, the condensate pump havlng a hot condensate discharge port; a conduit connecting a condensate space of the auxiliary surface condenser with the intake side of the condensate pump; a high pressure air pump having its intake side in conduit connection with a rarefied vapor space in the auxiliary surface condenser, the air pump having a discharge exit; and a cooling water pump in conduit connection with the cooling water chamber in the main surface condenserand also in conduit connection with a cooling of condensation falling from the water water chamber in the auxiliary surface contubes, and conducting the same away from denser, each condenser comprising upstandthe water tubes into the water tube chamber m ing water tube plates, lengthwise extending between the upstanding water tube plates.

5 water tubes, a cooling Water chamber at each In testimony whereof I have hereunto of its ends, and between the upper and under set my hand.

water tubes drip plates for receiving water JEAN E RI HORACE AUDOUIN.