US980504A - Steam-turbine. - Google Patents

Description

E. Y. EDGAR.

STEAM TURBINE.

APPLIUATION FILED SEPT. 1a, 1910.

80,504. l Patented' Jan. 3, 1911.

2 SHEETS-SHEET 1.

E. P. EDGAR.

STEAM TUBBINE.

APPLIGATION FILED SEPT. 1a, 1910.

Patented Ja1`1.3, 1911.

2 SHEETS-SHEET 2.

\| l l I l I i I l 98ans'- Um'rnn STATES 'PATENT ormon.

ELLIS F. EDGAR, OF WOODBRIDGE, NEW JERSEY,

t tainC vnew and useful Improvements in Steam- 'Iltirbine Engines, aspecicat-ion. f Figure 1 is an end elevation mostly in fullt and a part in a section at line 1-1 in of which the following is Fig'..2.i- F ig. 2 is a side elevation part'in full? and part in section.A

',I had in view in designing this engine an engine capable of using a working pressureup to fiveuthousand (5,000) pounds or more with high economy as yhereinafter set forth.

F '10,'/15- exhaust `casing of steam chest,

Details of construction-L side casing, 2 end casing, 3- main driving shaft, 4- long moving blades, 5 reacting moving blades, 6- guides, 7 steam chest, 8 ring 9- primary feed valve, 10-I automatic controlling feed valve, 11-',;opening and closing cam, 12 ball governor, 134- main steam line from generator, 14.-, steam connection from valve 9 to valve pipes, 16 lsteam connec tion from main line to primary feed valve 9, 17-driving wheel connecting long moving blades 4 to main driving shaft 3, 18 driving wheel connecting reacting and moving bladesf by gearing to main driving shaft 3, l9- feed line from automatic controlling valve 10 to steam chest 7, 20 teeth on inner .edge of driving wheel 18, meshing with small gear wheel 21, 22* small gear wheels 21 and 23, 23- small gear wheel meshing with gear wheel 24 connected to main driving shaft 3, 25 exhaust cham ber, 26- roller bearing for driving wheel 18.

General descrz'ptz'0n.-This engine is constructed preferably with a steam chest constructed in a heavy ring casing surrounding a main driving shaft having connections to spreader guides terminating in a ong narrowimouth whereby the steam is delivered in. a wide sheet on long moving blades 4 so arranged as to form long diverging -nozzles between said blades whereby the steam is expanded many times'before being exhausted' on reacting and moving blades 5, which are spaced closer together than the exhaust space between moving blades et.

I do not confine myself to the spacing Shown here between reacting and moving blades 5 as I may contract the space between shaft carrying specification of Letters Patent. Application filed September 13, 1910. Serial No. 581,752.

these blades at their exhaust end so as to offer more resistance to the exhaust from moving blades 4. Moving blades 4. and 5 move in opposite directions, but. operate main driving shaft 3 in the same direction. The object in not having reacting blades 5 stationary is to utilize the friction produced by the exhaust from moving blades l while passing over the surface of blades 5. I do not confine myself to having my steam chest located in the center around the driving shaft as I may place the steam chest just inside of the outer casing especially in the multiple steam chest types where there would be more than two rows of blades as shown in this case. I show here one row of blades on each side of driving wheel 17, each exhausting on a row ofreacting and moving blades 5. I show driving' wheel 17 extending almost to outer casing 1 leaving only a slight clearance forming a partition in exhaust chamber 25. These blades might extend the full width of exhaust vchamber 25 having long bolts running through them securing them to driving wheels 18 or, they might be lcast on one side of driving wheels 18, orthey might be otherwise secured, either on one or both sides as driving wheels 18 might be arranged differently, especially when the steam chest would be located just inside of the outer casing where the exhaust steam chamber 25 is now located and the exhaust steam chamber l.would thenbe located in the center around driving 'shaft The manner in which high economy is obtained in this engine is as follows, by first passing the steam from the generator through Patented'aan. s, 1911.

primary valve 9, /which is composed of a balanced cylinder puppet valve operated by an opening and closing cam, this valve 9 delivers steam to valve 10, which is also composed of abalanced cylinder puppet valve which is operated by an automatic governor.

The object of the opening and closing cam on valve 9 is in the case of a multiple steam chest type that each steam chest will be equipped with one automatic valve 10 and one primary feed valve 9 and only a sufficient number of valves 9,' will be opened by the opening and closing cams to take care of the load as therobject of these valves is to always deliver boiler pressure to valves 10, thereby giving economy if properly used after leaving steam chest 7.` Valves 10 are to take care of any sudden change of load to prevent the engine running away by cutting off the steam automatically as the valves will be arranged to cut out at different speeds so that only a sufficient number will remain open to take care of vthe load after the steam leaves steam chest 7 to spreader guides (5, the steam is spread in` these guides to a wide thin sheet whereby the steam is delivered in this form on wide long moving blades and expanded to any desired pressure when entering upon the reacting moving blades. In this manner this engine can be built t0 handle any desired .pressure economically by expanding the steam and eliminating the friction on the reacting and moving, yblades as set forth. Preferably I would connect the long moving y blades 4 secured -to driving wheel 17 directto driving shaft 3 and reacting and moving blades 5 secured to driving wheel 18. I would connect to driving shaft 3 by gearing substantially as s owii. Itfwould be necessary to have several of the small gear wheels Q1 meshing into teeth Q0 on the inner surface of driving wheellS to properly support y dvriving wheel 1S. Roller bearing 26 is a further support for driving wheel 18.

/ Having described my invention what I claim as new and desire to secure by Letters Patent'is:

l. A steam turbine engine having one or more steam' chests, spreader guides connected thereto and terminating in a long narrow mouth, long moving blades with diverging curved surfaces receiving steam therefrom and forming long curved diverging' nozzles, `whercby the steam yis expanded many times before exhausting from said nozzles, substantially as set forth.

2. A steain turbine engine having one or more steam chests connected to spreader guides,terminating in a long narrow mouth,

- said guides so formed as to spread the steam in a thin sheet at the mouth of said guides leading to long moving blades with a curved surfaceso arranged as to form long curved diverging nozzles between said lon moving blades whereby the steam is expan ed many times before exhausting from said nozzles on reacting moving blades receiving steam from said long blades and mounted' on a wheel secured to a driving shaft, substantially as set '-forth.y

3. A steam turbine engine havin one or more steam chests connected to guides leading tolong moving blades with long diverging surfaces so arranged as to form Aldngdiverging nozzles between them said long mov ing blades receiving steam from said iides and exhausting on reacting moving lades securedv to a driving wheel said driving wheel being carried on roller bearin s and an kexhaust chamber entirely surroun ing said reacting movin@ blades at their exhaust end, said reacting bades and said. long movin blades being connected to a driving shaft al substantially as set forth.

ELLIS F. ED(`J`rAR.l

vWitnesses LAURA E. SMITH, I. B. EDGAR.

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