US1239535A - Ejector-control apparatus. - Google Patents

Description

' SUCZEK.

EJECTOR CONTROL APPARATUS. APPLICATION FILED MAYB, I917.

a q IAQ Q lUNlTED @TAE% PATENT @ihlh l dlili ROBERT SUCZEK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO 0. H. WHEELER MANUFACTURING COMPANY, OF PHILADELPHIA,

TION OF PENNSYLVANIA.

PENNSYLVANIA, A. CORPORA- EJECTOR-CONTROL APPARATUS.

Application filed. May 8, 1917.

To all whom it may concern:

Be it known that I, Bonner SUoznK, a subjcct of the Emperor of Austria-Hungary, residing in the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented certain new and useful Improvements in Ejector-Control Apparatus, of which the following is a specification.

My invention relates to apparatus for controlling an ejector which removes air or other uncondensable gases or vapors from a condenser.

My invention resides in apparatus for controlling an ejector which removes air or the like from a condenser in response to unclesired accumulation or rise in level of condensate, by controlling the air connection between the condenser and ejector; and my invention resides in apparatus for so controlling an ejector used in combination with a steam turbine or other steam engine, the control of the air connection between condenser and ejector and the control of motive fluid being effected by change of level of condensate and in response to predetermined change in speed of the turbine or engine.

For an illustration of examples embodying my invention, reference is to be had to the accompanying drawing, in which:

Figure l is a sideelevational view, partly in vertical section, of steam turbine and condenser, with means for controlling the cooperation of the condenser with an ejector.

Fig. 2 is a vertical sectional View, partly in elevation, of a jet condenser with means for controlling the cooperation of the condenser with an associated ejector.

Referring to Fig. 1 T is a steam turbine or other steam engine whose load may be a dynamoelectric generator G, or any other desired load. The exhaust steam from the turbine T is delivered through the exhaust steam connection K into the surface con denser whose shell is C, the usual circulating water tubes and other well known appurtenances being omitted. The condensate, whose level is indicated at a, accumulates in the bottom of the shell C and in the hot well or condensate receptacle H, from which it is withdrawn by a pump, not shown, connecting with the discharge passage 5. The steam for driving the turbine T is delivered through the valve V comprising the valve member 2; and the valve seat 4: to the pipe 0 Specification of Letters Patent.

Patented se t, ii, ieiv. Serial No. 167,163.

between which and the turbine T intervenes the governor controlled valve V of well known construction and mode of operation.

Connnunicating with the pipe 0, between the valves V and V is the automatic pressure controlling valve (Z, of any well known type, which delivers to the valve 0 having the movable valve member f. The valve 0 delivers through the hand operated valve 9 to the steam nozzle or nozzles of the ejector E, which has a connection hwith the interior of the condenser shell C at a point preferably behind the baflle plate 71. In the connection it is a movable valve member j.

Upon and rotated by the shaft is, forming an extension of the shaft of the turbine T, is the centrifugal safety governor m having the fly balls a. Disposed -in suitable position with respect to the balls at is the latch lever 0, shown for the sake of clearness in a plane at right angles to that in which it would be positioned in practice, pivoted at p and having the latch hook g normally retaining in elevated position the valve stem 9 attached to the valve member 2;, upon which the heli cal spring 3 acts in a downward direction tending to move it against its seat 41 The valve stem 1" continues downwardly through the bottom of the valve V and terminates at 6 above the head a on the rod 10. A helical spring 00 confined between the head it and the abutment l normally holds the rod '10 elevated in the position shown.

On the rod 20 is a collar .2 on the under side of which engages'the arm a of a bell crank lever pivoted at Z2 and whose second arm 0 has an abutment on the under side of which engages the lever (Z pivoted at c and whose other end is pivoted at f to the link 9 pivoted at 71 to the link 71 secured to the pivotal shaft on which is secured the valve '0. A spring 74 is under tension and pulls downwardly upon the link '5 On the rod in is a second collar m on the under side of which engages one end of a lever n pivoted at 0 and whose other end has a hook p with which engages a lever pivoted at r and whose other end is pivoted at s to the link 25 pivoted at a to the lever o secured upon the shaft w upon which is secured the valve 7'. A spring m is under tension and exerts a pull upon the lever 02 tending to rotate it in a counterclockwise direction.

Upon the rod '20 is a third collar 11 above whichis disposed the end of the lever 2 secured upon the pivotal shaft :1 which ex: tends through a vacuum tight joint in the condenser shell C to the interior thereof. On the interior of the condenser shell there is secured upon the shaft 0, a lever 79 carrying at its one end a float floating uponthe condensate If the turbine or engine T should change its speed, as by racing or otherwise unclesirably increasing its speed the halls n of the governor m will, due to the increased centrifugal force, move outwardly and so raise the latch 0 and withdraw the hook q and thereby release the valve 1", whereupon the spring 8 will force the valve o downthe steam supply to the ejector E, with the result that the ejector discontinues removal of an from the condenser C, whereupon the vacuum within the condenser C diminishes,

the pressure therein rising, and this pres sure continues to use so long as the e ector E. is not operating, and so increases the back pressure on the turbine T and reduces its speed, because notwithstanding the closure of the valve V the steam in the connections beyond the valve V will continue to drive the turbine T for an appreciable time.

Simultaneously with the aforementioned downward movement of the rod to, the collar al will press downwardly upon the outer end of the lever 12, and release the lever g whereupon the spring :0 will contract and rotate the lever o in counterclock- 'wise direction and move the valve j to a position to close off the an connection between the condenser and the ejector E, thus additionally preventing the ejector from removing air from the condenser, with the result above described.

lVhile the turbine is running within the desired limits of speed, and therefore while the rod 1" is lockedin the elevated position illustrated, a rise in the level a of the con- 'densate, above a predetermined desired limit, will cause the float 0 to rise, with resultant dowmvard movement of the lever e which will. thrust downwardly upon the collar 3 upon the rod 20 with the result I that the valves and 5} will be closed, as in the case, above described, thus cutting off motive fluid from the e ector E and also closlng the a1r connection between the ejector and the condenser. By this a ction rise of level of the condensate to such point that it would flow from the air connection into the ejector is prevented. Ordinarily the air connection from the ejector to the con denser will be much lower than indicated in Fig. 1, it being understood that the controls illustrated are diagrammatic in nature.

In Fig. 2 J is the body of a jet condenser having the annular water chamber (Z to which water is delivered through the connection 6 Through the inner wall of the chamber (Z extends a plurality of nozzles 7 through which water is delivered in streams, the water falling downwardly in contact with the steam entering at K and passing through the diffuser 9 the steam being condensed into water and the condensed steam and injection water collecting in the bottom of the casing J. Submerged in the collected water is a centrifugal pump l? having the impeller I which removes the water and delivers it against atmospheric or any other pressure. E is an ejector to which steam or other suitable motive fluid is delivered through the connection If, The ejector. E has an air connection 2' with the interior of the condenser J, and inthis connection is a valve j secured upon the pivotal shaft which extends to the exterior of the con nection 2' through a vacuum tight joint. On the exterior of the connection 2' there is secured upon the shaft 70 a link m pivoted at n to a link'o lpivoted at p to the lever Q2 which is secured upon the shaft 1' which extends through a vaeuumtight joint into the interior of the condenser J. On the interior of the condenserthere is secured upon the shaft 9 a lever s carrying at its end a float t resting upon the water level 213. Dis-.

posed in the path of travel of the lever s is the vacuum breaking valve o of any well known construction.

The ejector E delivers into the air separating chamber A beneath. the level 10 of the water contained therein and delivered thereinto through the opening a"? at any suitable rate to keep the discharge opening from the ejector E always submerged. To maintain the discharge outlet of the ejector E so submerged there is provided an up wardly extending partition 1/ on the opposite side of which is an outlet 2 from which the water entering at m is withdrawn.

In case the pump P gets out of order or for any other cause the level a of the water rises, to prevent entry of such water into the ejector E through the connection 6 the float t rises, and through the lever 5' and the above described connections actuates the valve 7' moving it to closed position, to thereby shut offconnection between the ejector E and the condenser J and simultaneously the lever s in rising engages and lifts the lever o thereby breaking the vacuum by bringing the condenser J into communi cation with the atmosphere.

The closure of the valve j assists or hastens the breaking of the vacuum at valve '0 because the ejector upon closure of the valve j no longer continues to extract air from the condenser J.

ater is circulated through the chamher A as above described because the steam from the ejector E is condensed thereby, and to prevent its undue rise in temperature, fresh water is constantly admitted through the aperture 03 and the warm water drawn off through the outlet 2 hat I claim is:

1. The combination with a condenser, of an ejector for removing air therefrom, and

means responsive to change in amount of condensate for preventing removal of air from said condenser by said ejector.

2. The combination with a condenser, of an ejector, an air connection between said condenser and said ejector, and means responsive to change in level of the condensate for closing said air connection.

3. The combination with a condenser, of an ejector, an air connection between said condenser and said ejector, a valve in said connection, and a float actuated by the condensate for actuating said valve.

4. The combination with a condenser, of an ejector, an air connection between said condenser and said ejector, a valve in said connection, means tending to actuate said valve, means for locking said means to prevent actuation of said valve, and means responsive to change in amount of condensate for actuating said locking means to free said first named means.

5. The combination with a condenser, of an ejector, an air connection between said condenser and said ejector, a valve in said connection, a valve controlling supply of motive fluid to said ejector, means for actuating said valves, means for locking said actuating means to preventactuation of said valves, and means responsive to changes in amount of condensate for actuating said locking means to free said actuating means.

6. The combination with a condenser, of a steam motor exhausting into said condenser, an ejector, an air connection between said condenser and said ejector, a valve in said connection, and means responsive to change in speed of said motor controlling said valve.

7. The combination with a condenser, of a steam motor exhausting into said condenser, an ejector for removing air from said condenser, a valve controlling supply of motive fluid to said ejector, and means responsive to change in speed of said motor controlling said valve.

8. The combination with a condenser, of

a steam motor exhausting into said condenser, an ejector, an air connection between said condenser and said ejector, a valve in said connection, means responsive to change in speed of said motor controlling said valve, and means responsive to change in amount of condensate controlling said valve.

9. The combination with a condenser, of a steam motor exhausting into said condenser, an ejector for removing air from said condenser, a valve controlling supply of motive fluid to said ejector, means responsive to change in speed of said motor controlling said valve, and means responsive to change in amount of condensate controlling said valve.

10. The combination with a condenser, of a steam motor exhausting into said condenser, a valve controlling flow of steam to said motor, an ejector, an air connection be tween said condenser and said ejector, a valve in said connection, and means responsive to change in speed of said motor controlling said valves.

ll. The combination with a condenser, of a steam motor exhausting into said condenser, a valve controlling supply of steam to said motor, an ejector for removing air from said condenser, a valve controlling sup ply of motive fluid to said ejector, and means responsive to change in speed of said motor controlling said valves.

12. The combination with a condenser, of

steam motor exhausting into said condenser, a valve controlling flow of steam to said motor, an ejector, an air connection between said condenser and said ejector, a valve in said connection, means responsive to change in speed of said motor controlling said valves, and means responsive to charge in amount of condensate controlling said valve in said air connection.

13. The combination with a condenser, of a steam motor exhausting into said condenser, a valve controlling supply of steam to said motor, an ejector for removing air "from said condenser, a valve controlling supply of motive fluid to said ejector, means responsive to change in speed of said motor controlling said valves, and means responsive to change in amount of condensate controlling said valve second named.

14. The combination with a condenser, of a steam motor exhausting into said condenser, a steam pipe supplying steam to said motor, a valve in said pipe, an ejector for removing air from said condenser, and a connection to said steam pipe between said valve and said motor for supplying motive fluid to said ejector.

15. The combination with a condenser, of a steam motor exhausting into said condenser, a steam pipe supplying steam to said motor, a valve in said pipe, an ejector for removing air from said condenser, a connec- 'tion to said steam pipe between said valve motor, a valve in said pipe, an ejector for removing air from said condenser, a connection to said steam pipe between said valve and said motor for supplying motive fluid to said ejector, and means responsive to changes in speed of said motor controlling said valve.

17 The combination with a condenser, of a steam motor exhausting into said condenser, a steam pipe supplying steam to said motor, a valve in said pipe, an ejector for removing air from said condenser, a connec- .tion to said steam pipe between said valve and said motor for supplying motive fluid to said ejector, a valve in saideonnectiomand means responsive tochange. of speed of said motor controlling said val es.

18, The combination with a ndenser, f a steam motor exhausting into the same, means'for supplying steam to said motor, an ejector for V removing air from said condenser, a connect on f o aid steam sup,- plyingm ans for supply ng motiv id t said, ejec or, and n utoma c pressure c n: t lling valve insaid. mot v fluid connection to aid je t In testimony whereof I have hereunto afiiXed my signature this3rd day of Way,

ROBER SUGZEK- Copies of this patent may be pb tain ed for five cents each, by addressing the .figg n pissip er Peggy.

Washington, D, G.

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