US1282680A - Apparatus for protecting steam-turbines against rust. - Google Patents

Description

R. J. DUPUY. APPARATUS FOR PROTECTING STEAM TURBINES AGAINST RUST. APPLICATION FILED SEPT- v2. 1911.

1,Q82,680m Patented Oct. 22, 1918.

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neeaeeo. If 4 name JULES nurux, or rams, manor, nssren'on To comrncmn GENERALE DELECTRIGITE, OF PARIS, FRAN' CE, A CORPORATION OF FRAN'C E.

APPARATUS FOR PROTECTING STEAM-TURBINES AGAINST RUST.

I .do herebydeclare the following to'be-fla' full, clear, and exact descriptionf. the 'l'n-j vention, such as will enable others skilled 1n the art to which itp ertains to m l e and use the same;

The present invention .relates'to-steam turbines and jhas'jfor its objecttfo roteet the fixed and movi blades, diskaan other: ue to the presenee'jof moisture which remains in or --gain'siacce ss parts against rust time whenit. is stopped. I

The invention consists in applying to the turbine a blower which," during the operation of the turbine, is cut oil by a valve which is opened at thetime of stopping so to the interior. of the turbine during the as to cause the turbine to be traversed by a. current of dry air which takes up the re-' maining partlcles of water-and maintains in the interior of the machine a dry atmosphere, thereby avoiding rust. The airblown in can be heated by means ofa. heating device interposed immediately afterthe blower. r

The accompanyingdrawings show byway of example diflerent arrangements of appa-i ratus forming the vobject of the invention'.. I

Figure 1 is "a diagrammatic --elevat1 on partly sectional of I a turbine providedwith a ventilating device. r h Fig. 2 is a. similar diagrammatic elevat on of a modification; 1

' The turbine "is shown at T, T designates the admission pipein'whichis interposed a valve A serving to': control the steam. A;-

valve B 'permit's'fthe interior of the turbine (admission end) to be placed in communication with the atmosphere. At the opposite end of the'turbine is located a blower -V separated from the turbine by a valve 0.

A device R applied to the conduit for the air from the blower .V serves to heat the air, so thata current of dry air is constantly obtained. During the times, when the turbine Specification of Letters Patent. Application filed September 12, 1917'. 1Seria1No. 190,958.

v T i toppedlthe valve 'JULEs DUP the particles of water remaining and maintains in the interior. of-the machine an atmosphere sufiiciently dry to avoid rust of the -:o1xidizable metallic parts. Y .I

-"The' heating device shown in Fig. 1 is constituted by a resistance D'through which an-electric current passes.

Flg. 2-shows a modification in which the mounted on the exhaust pipe G. In this example the heating apparatus shown at S is formed of a jacketed tube within the outer envelop of Which a current of steam iLI'I'lV-r mg by the tube E is caused to circulate, tube F serving for the escape of the condensed water. a

It is well understood that modifications can be made in the invention and the blowing'apparatus mounted either on the body of the turbine T or on the condenser itself, or on another part in communication with the exhaust. "Iclaim: a

:;1. A steam turbine including a: valve in thefist eam inlet pipe adapted to establish if communication between the interior of the turbine and theatmosp'here, and means, for

' w ng hro gh the turbine and out'of said Valve; V i

2-. A- steam turbine including a valve in the steam inlet pipe adapted to establish communication between the interior of the turbine'and the atmosphere, means forblow- Patented ca. a, rare.

the admission current ofair which is dry blower V and its accessory apparatus are l ing air through the turbine and out of the valve, and means for controlling the flow of said air.

3. A steam turblne including a valve on lone side of the rotor adaptedto establish communication between the interior of the turbine and the atmosphere, and means on the opposite side of the rotor for blowing air through the turbine and out of said valve. 4. Asteam turbine including a valve on one side of the rotor adapted to establish In testimony whereof I eflix my signacommunicatior}; between lthe interlor of tlmle ture, in presence of two witnesses. turbine and t e atmosp xere, means on t e v Opposite side of the rotor for blofving air RENE JULES DUPUY' 5 through the turbine and out of sand valve, Witnesses:

and means for heating theeir as it passes JOSEPH GEMENIE, from the blower to the turblne. D, H, LAWSON,

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