US1240858A

US1240858A - Automatic ejector control.

Info

Publication number: US1240858A
Application number: US8607516A
Authority: US
Inventors: Gottdank L Kothny; Robert Suczek
Original assignee: CH Wheeler Manufacturing Co
Current assignee: CH Wheeler Manufacturing Co
Priority date: 1916-03-23
Filing date: 1916-03-23
Publication date: 1917-09-25
Anticipated expiration: 1934-09-25

Description

G. L. KOTHNY ,61 R. SUCZEK. AUTOMATIC HECTOR CONTROL. APPLICATION HLED run. 23. lane.

Patented Sept. 25, 1917.

vNiTED TES T OFFICE.

GOTTDANKJI. K OTHNY AND ROBERT SUCZEK, OFZPHILADELPHIA, PENNSYLVANIA, ASSIGNOR'S! C. H. WHEELER MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

AUTOMATIC EJECTOB CONTROL.

Specification of Letters Patent.

Patented Sept. 25, 1917.

Application filed March 23,1916. Serial No. 86,075.

To all whom it may concern:

Be it known that we, GOTTDANK L. KOTHNY and ROBERT SUCZEK, subjects of the Emperor of Austria-Hungary, residing at Philadelphia, county of Philadelphia, State of Pennsylvania, have invented new and useful Improvements in Automatic Ejector Controls, of which the following is a specification.

Qur invention relates to vacuum produte ing apparatus which is automatically controlled with respect to the supply of motive fluid or its pressure, utilized, as in ejector apparatus, for producing or maintaining a vacuum. I

It is the object of our invention to provide a system wherein an ejector is employed for producing or maintaining a vacuum, as ina. steam condenser or other device, and wherein exhaust or live steam, or motive fluids of different kinds or pressures, may be employed in the ejector together with an automatic control which shall insure the ejector receiving sufficient of either of the motive fluids independently of variations in the supply or pressure of at least. one of them.

For an illustration of some of the forms our invention may take, reference is to be had in the accompanying drawing, in which Figure 1 is an illustration of {system embodying one formv of our invention.v

Fig. 2 1s a sectional view, some parts in elevation, of the'automatically controlled valves.

Fig. 3 is an illustration of an embodiment of our invention when applied to a jet con denser. V

In Fig. l, 0 represents a steam condenser, such as a surface condenser, having the exhaust steam inlet a and the tubes 6, only a portion of which is shown, which conduct the cooling water which is delivered thereto through the pipe 0 fromthe centrifugal or other pump I. The condensed steam or condensate collects in the bottom of the condenser C and is conducted through pipe d to the condensate pump P and delivered thereby to any suitable point. through the pipe 0. The pumps P and P are shown as having a common shaft driven by a steam engine or motor, such as a steam turbine T. Steam for driving the turbine T is delivered through the pipe 7" controlled by the valve y.

The exhaust steam from the turbine 'l is delivered into the pipe 71, which is provided with the relief valve 5 which, when the pressure of exhaust steam in the pipe it exceeds a predetermined value, opens and allows escape thereof to atmosphere, to the boiler feed water heater, or to any other place or device. Ordinarily, however, the exhaust steam will pass through the pipe h and through the swinging check valve j into the pipe Z, controlled by ordinary hand valve m, to the ejector E having the chamber n into which projects the expansion nozzle 0 receiving the steam from pipe 11. The chamher a also communicates by passage 7) beneath the hallle I with the steam space of the condenser (J to extract therefrom the air or other gases or fluid to maintain the desired vacuum therein. The steam issuing thr ugh the nozzle n entrains the air or gas and 1e mixture is delivered through the ejector diffuser 9 through the pipe 8.

It is desirable to always maintain a higln vacuum in the condenser C and it is there fore important that the ejector E is supplied at all times with sufficient steam or motive fluid.

It frequently occurs, however, that the amount of exhaust steam available from the turhineT, as when the load upon the {turbine '1 decreases, is insuflicient to maintain the proper vacuum. through the agency of the ejector E, within the condenser C. In such case other or additional steam is automatically supplied to the ejector E so that it may maintain the proper vacuum in the condenser C.

This is effected by delivering some ofthe steam from the pipe 7 to the ejector E,

This is automatically accomplishedbyan.

arrangement of the character illustrated in Fig. 2 where represents the steam supply pipe which communicates with a chest or chamber t having the steam outlets 'v and cc, of which the former conducts steam to the turbine T for driving the same and w delivers into the pipe 3*. Fig. 1, having a swing check valve y and connecting with the pipe in to the right of the check valve j.

Communication between the chest 1 and the outlets o and 'w is controlled by the valves a and a, Fig. :2. these valves being shown open and closed, respectively, and cured upon the valve rods 11 and 0 connected to the lever d pivotel at e and controlled by the fly ball or other governor G driven or rotated by the turbine T.

The operation is as follows:

Assuming the turbine T to be loaded, it. delivers suliicient exhaust steam through the pipe h, valve j and pipe In to the ejector E to maintain the desired vacuum in the condenser C.

Should the load. upon the turbine T change, that is. should it for example decrease, the governor will move the lever d in acountcrclockwise direction about its pivot 6, thereby decreasing the opening of the valve a to reduce the amount of steam to the turbine T and opening the valve a thereby allowing steam from the pipe f to pass through chamber t and through outlet in, pipe as and check valve 3/ through pipe is to the ejector E which now receives sutlicient steam for maintaining the vacuum in the condenser C.

By this automatic action, when the supply of exhaust steam through the pipe it falls to or below a predetermined minimum steam from the pipe will be delivered to the ejector E either to make up for the decreased amount of steam delivered thereto from the pipe )1. or entirely replacing the steam from pipe h by steam from tpe pipe ,f.

And in case the amoi nt of exhaust steam delivered from the turbine T to the pipe h is greater than that which is necessary for the ejector E, the relief valve i will open and allow escape of any excess steam.

In Fig. 3 our automatic arrangement is shown in connection with a jet condenser J having the usual water inlet 7" delivering through the nozzles 7 and having the inlet h for the steam to be condensed. The ejector IC is connected as shown. and the turbine T drives the submerged centrifugal pump P for removing the condensate and cm densing watcr. Here again by a system of piping and valves and controls Similar to those of Fig. 1. upon decrease of exhaust steam through the pipe ii to: or below a predetermined minimum. steam is delivered to the ejector E from pipe at.

What we claim is:

1. The combination with a chamber, of an ejector for producing a vacuum therein, a

I plurality of sources of motive fluid for said ejector, and automatic means for opening communication between one of said-sources and said ejector upon decrease of motive lluid supplied by another of said sources.

2. The combination with a chamber, of an ejector for producing a vacuum, therein, a source of exhaust steam for said ejector, a source of live steam, and automatic means for opening communication between said source of live steam and said ejector upon change in supply of exhaust steam.

3. The combination with a condenser, of a condensate pump therefor. a steam motor for driving said pump, an ejector for withdrawing air or gas from said condenser, an exhaust steam connection from said motor to said ejector, and means responsive to change of load on said motor for connecting said ejector to another source of steam.

l. The combination with a chamber, of an ejector for producing a vacuiun therein, a steam motor, a pipe delivering steam exhausted from said motor to said ejector, a check valve in said pipe, a pipe extending from another source of steam connecting with said first named pipe at a point between said check valve and said ejector, and means responsive to change of load on said motor controlling supply of steam from said second named source into said second named pipe.

5. The combination with a chamber, of an ejector for producing a vacuum therein, a source of steam, a pipe connecting said source with said ejector, a check valve in said pipe. a pipe extending from another source of steam connecting with said first named pipe at a point between said check valve and said ejector, and automatic means for controlling flow of steam from said,second named source into said second named pipe.

6. The combination with a chamber, of an ejectorfor producing a. vacuum therein, a motor, a pipe deliverm steam exhausted from said motor to Stilt ejector. 'a check valve in said pipe. a pipe extending from another source of steam connecting with said first named pipe at a point, between said check valve and said ejector. means responsive to change in load on said motor controlling How of steam from said second named source into said second named pipe. and a relief valve for said exhaust steam.

7. The combination with a chamber. of an ejector for producing a vacuum therein. a source of exhaust steam, a pipe connecting said source with said cjcctor. a check valve in said pipe. a pipe extending from another source of steam connecting with said first named pipe at a point between said check valve and said ejector, automatic means for admitting steam from said second named source into said second named pipe, and a.

relief valve for said exhaust steam.

8. The combination with a chamber, of an ejector for producing a vacuum therein, a steam motor, a pipe delivering steam exhausted from said motorto said ejector, a check valve in said pipe, a pipe extending from another source of steam connecting with said first named pipe at a point between said check valve and said ejector, means rein said pipe, a pipe extending from another source of steam connecting with aid first named pipe at a point between said check valve and said ejector, automatic means for admitting steam from said second named source into said second pipe, and a check valve in said second named pipe.

10. The combination with a chamber, of

an ejector for producing a vacuum therein, a steam motor, a pipe delivering steam exhausted from said motor to said ejector, a check valve in said 'pipe, a pipe extending from another source of steam connecting pipe.

with said first named pipe at a point between said check valve and said ejector, means responsiveto change in load upon said motor for controlling flow of steam from said sec ond named source into said second named pipe, a relief valve for said exhaust steam, and a check valve in said second named 11. The combination with a chamber, of an ejector for producing a vacuum therein, a source of exhaust steam, a pipe connecting said source with said ejector, a check valve in said pipe, a pipe extending from another source of steam connecting with said first named pipe at a. point between said check valve and said ejector, automatic means for admitting steam from said second named source into said secondnamed pipe, a relief valve for said exhaust steam, and a check valve in said second named pipe.

12.-The combination with a chamber, of an ejector for producing a. vacuum therein, a steam motor, a governor therefor, an exhaust steam connection from said motor to said ejector, and a connection from said ejector to a seoondsource of steam con- .trolled by said governor.

13. The combination with a chamber, of an ejector for producing a vacuum therein, a steam motor,.a governor therefor, valves opened andclosed respectively b said govrnor, one of said valves control ing admis- I! sion of steam to said motor, and another of said valves controlling admission of steam to said ejector.

14. The combination with a chamber, of an ejector for producing a vacuum therein, a steam motor, a governor therefor, valves opened and closed respectively by said governor, one of said valves controlling admission of steam to said motor, another of said valves controlling admission of steam to said ejector, and an exhaust steam connection from said motor to said ejector.

15. The combination with a condenser, of a cooling water pump therefor, a steam motor for driving said pump, an ejector 1 0 withdrawing air or gas from said condcm an exhaust steam connection from said our tor to said ejector, and means responsia c to change of load on said motor for connectn.y-L} said ejector to another source of steam.

an ejector for producing a vacuum thercin, a source of motive fluid for said ejector. :1 motor, and means responsive to change oi load on said motor controlling connection between said ejectorand said source of motive fluid. w

17. The combination with a chamber, of an ejector for producing a vacuum therein, a source of motive fluid, a motor, and a governor controlling said motor and a connection between said source of motive fluid and said ejector.

18. The combination with a condenser, of means for removing condensate therefrom, an ejector for removing air or gas from said condenser, a source of motive fluid, and means responsive to variations in amount of condensate controlling a connection between said source of motive fluid and said ejector.

19. The combination with a condenser, of means delivering cooling water thereto, an ejector for removing air or gas from said condenser, a source of motive fluid, and means responsive to changes in amount of coolin water delivered to said condenser contro ing connection between said source of motive fluid and said ejector.

20. The combination with a condenser, of a cooling water pum therefor, a steam motor for driving sai pump, an ejector for withdrawing an or gas from said condenser,

an exhauststeam connection from said mo said pumps, an ejector for withdrawing air.

or gas from said condenser, an exhaust steam connection from said motor to said ejector, and means responsive to change of load on said motor for connecting said ejector to a second source of steam.

22. The combination with a condenser, of pumping means cooperating therewith, an ejector for removing air or gas therefrom, means delivering to said ejector steam Whose quantity, varies with the load upon said pumping means, and automatic means causing increase of steam delivery to said ejector upon decrease of the steam whose amount 10 GOTTDANK L. KOTHNY. ROBERT SUCZEK.

li oples of this patent may be obtained for live cents each, by addressing the Commissioner of Patents, Washington, D. 0.