US818723A - Elastic-fluid turbine. - Google Patents

Description

No. 818,723. PATENTED APR. 24, 1906.

J. WILKINSON ELASTIC FLUID TURBINE.

APPLICATION FILED AUG.9.1905.

vent leakage of pressure at their joints.

unrran srArns PATENT OFFICE JAMlu'b WILKINSON, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO WILKINSON TURBIXE COMPANY, A CORPORATION OF ALABAMA.

ELASTIC-FLU) TURBINE.

Specification of Letters Patent.

Patented April 24, 1906.

To all whom it wmy concern.- Be it known that 1, JAMES WrLKINsoX, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in Elastic -Flui(l Turbines, of which the following is a specification. My invention relates to improvements in elastic-fluid turbines such as are shown and described in Letters Patent N0..745,270, issued to me November 24, 1903, wherein the sectional casing of a turbine is held firmly together and strengthened by the provision of an outer shell or casing which surrounds the inner casing. According to that construction the outer shell carried abutments between which the inner casing was locked against longitudinal movement, and as the shell shown was integral one of these abutments was made detachable in the form of a locking-ring which en aged within a channel in the inner face of the shell and projected over the adjacent end section of the casing.

.W'here the shell is divided into'sections on a lon itudinal plane, these abutments may both be inte ral with the shell sections. In turbines of this general character it is desirable/that these sections of the inner casing should be held together in a manner to retis also a consideration, particularly where a chamber su plied with steam is disposed between the s ell and casing, that simple and effective acking means should be provided to pack t e joint between-the shell and casing and prevent leakage of pressure from the chamber.

It is therefore an object of my invention to provide an improved shell-packing means, such as a segmental or solid ring, which enters an annular move in the casing and by compressing pac 'ing material therein causes it to securely pack the joint between shell and casing against fluid leakage. This ring is preferably dis osed beneath the adjacent abutment or 100 ing-ring and is forced into the packing-grooire by set-screws threaded through the abutment or ring and enga ing it.

According to my present mventionT leave aslight clearance between one of the abutments and the adjacent end section of the casing and provide adjusting means, such as set-screws, which act between the end section and the shell or abutment to force the casingsections firmly together.

My invention further comprises the details of construction and the arrangement of parts hereinafter more particularly described, and illustrated in the accompanying drawings, forming a part of this specification, and in which Figure 1 is a top plan view of a portion or a turbine provided with my im rovements. Fig. 2 is a partial sectional view a ong the line :r as, Fig. 1. y y, Fig. 1. Fig. 4 is a detail view of part of a segmental packing-ring.

Similar reference-numerals refer to similar parts throu hout the drawings.

The turbine to which I have applied the improvements constituting my present invention comprises, preferably, a supply-head 1, exhaust-head 2, and one or more interposed diaphragms 3, whose peripheries interock with each other and said heads to form the inner sectional turbine-casing. A. tubular shell 4 surrounds the casing and is provided with an abutment, such as the shoulder 5, which engages the exhaust-head 2, and a detachable ring-abutment, such as 6, which serves as a stop for the sup ly-head. The ring 6 engages within an annu ar channel 7 in the shell, being held against lateral displacement by cap-screws 8, which may be screwed in or out to keep the flanged portion 9 parallel to the face of head 1. The turbine thus described corresponds with the disclosure in my Letters Patent aforesaid, where the locking-ring was relied upon to directly engage head 1 and hold the sections of the casing toether. According to my resent invention Tpropose to use adjustable evices, such as set or push screws 10, carried by the ring and provided, if desired, with lock-nuts 11, by means of which they are held. in position when screwed against head 1 sufliciently to insure the casin -sections being held tightly together between the screws and shoulder 5.

I have found it desirable'to heat the outer casing as much as the inner one to keep expansion of parts equal. To this end 1 provide a chamber 12, formed between the shell and casing and preferabl surrounding the latter. To this chamber admit fluid-oressure, such as steam, through a port 13. If

Fig. 3 is a similar view through shown in my Letters Patent No. 766,921. To

. "groove be beveled. As shown, the groove is that as the latter through the lockin the latter isintegral forjacket surrounding said casing, j ecting inwardly at 22 and a supply end of the shell,

ackin tionalcasing, in combinationwith a shell. or.

I provide against the leakage of pressure from chamber 12, I use a packing or grooved joint packingsring,

which rin has an angled flange 15, which has a beveled edge.

he ring rests in a channel 16 around head 1, with its fiangedisposed so as to enter the -groove 17 inthe side 'ofthe head;

ut, if esired, the ring ma consist simply of theportion 15, which nee not be beveled at its lower edge if the lower end of the packing,

eveledoppositely to the edge of ring 15, so

is forced against the packmg in the groove the acking is pressed downwardly and outward y to pack the joint between head and shell. This rin may be disposed beneath the set or pus screws 10, which pass through openings 18 therein and engage the head. To press'thepacking-ring to ts work, I use any desired number of setscrews 19, which are screwed downwardly -ringandengage the ac klng-rmg, being he d at any desired a justment by the lock-nuts 20. v

The packing-ring 14 may be sectional or integral, as desired. Ring 6 may be into ral where the shell is sectional; but, prefera ly, high-pressure tur 'bines, in which case I remove sections of the rin such as 21, which'can be inserted and loo edin lace after the ring has been slipped into the c annel 7 To remove the ring and open up the turbine, it is only necessary to detach the sections, such as 21, sli the rin out of the channel andsli the shell toward the exhaust end 0 the tur ring, it will be necessary also to loosen the setscrews 10 and 19 and cap-screws 8.

The screwsused for adjusting the packingrin may be much smaller than screws 10.

. acking 22 may be laced between them:- haust-he'a'd 2 and shou der 5 to 'revent leakage at this-end of the shell, or't 's joint may be made fluidight by grinding its surfaces. If desired, lockin and. pac rings could also 'be'used to t is end,-in w 'ch case the shell could be removed in either direction.

Having thus described my invention, what- I claim as new, and desire to secure by Letters Patent, is

- 1. An elastic-fluid turbine having a sectional casing, in combination with a shell or elements profrom said shell and disposed so as to hold t means to force he gether. I 2. An elastic-fluid turbine having a see jacket surrounding said casing, abutments such as 14, at the;

carried by said shell and adapted to enga e the end sections of the casing, and adjustab e means to force the sections of the casing together between said abutments, I

An elastic-fluid turbine having a sectional casing, a shell or jacket surroundin saidcasing, means carried by said shell which engages one end-of'said casing, a deta'ehable abutment connected to said shell and over hanging the other end of said casin adjust- 7 5 able devices such as screws c'arrie by said .abutment and adapted to be forced against said casin to hold its parts in position.

4. An elastic-fluid turbine havin end sections, a tubular shell or jacket provided with abutmentsiadapted to engage said. end sections, one of said abutments being removable, and adjustable means carried by anabutmentand adapted to engage the adjacent 'end section. L I

a 5. An elastic-fluid turbine having a sectional casing, in combination with a shell or dingsaidcasing'and provided acket surroun with an abutment adapted to engage one end 'ine. To-remove the of said casing, a channel or groove in said 0 shell, a locking-ring seated in said channel and projecting therefrom, means to prevent the disenga ement of said ring from said channel, an screws carried by said ring andadapted to be screwed against the adjacent end of said casing to force the latter against I I said abutment.

6 An elastic-fluid turbine having an inner I casing and an outer shell or jacket, a charm: ber formed between said shell and easing,- a packin -chamber between said shell andcasmg, an a movable element adapted to enter said chamber and act upon the packing therein to pack the joint between said-shell, and easing. I Y

7. An' elastic-fluid turbine having an inner oasin andan outer shell or jacket, a steamchamier formed between said casing and shell, an. annular pac -chamber formed between an end of said cas Ice " casing" in p said ring into said packin -chamber.

---8. Anelastic-fluidturbme ha ganinner .casing and an outer shell'or jacket,.-lockin I abutments in said shell between which-said inner casin is disposed, means to hold said ace. between said abutments, a fluid-pressure chamber between saidshell and casing, and means toprevent leakage from said chamber comprising, an annular 126 e casing between them, and sections of said casing toacket surrounding said with .. by said she l' "packing-chamber near an end of thecasing, a segmental ring adapted to enter-said chamv. her, and screw means to force 'said-ringin'to said chamber. '9. An elastic-fluid :turbine having tional casing, in combination with a shellor casing a'nd jprovided means adapted. to .en e i one end' of saidcasin a detachable ahii tment carried.

near the otherend-pf said casing, r "39' casing, an outer shel an annular packing-chamber between said shell and eas ng adjacent to said abutment, a packing-ring adapted to enter said packingchamber, and set-screws carried by said abutment and adapted some of them to engage said ring and some the adjacent end 0 t e casing, substantially as described.

10. Aturbine com rising an inner sectional a fluid-pressure chamber between said parts, an annular packingchaniber between the shell and casing near an end of the latter, and an annular element adapted to enter said chamber, packing for said chamber between the oppositely-disposed faces of said element an chamber, said aces being so inclined relatively to each j other as to force said packing outwardly against the shell when moved together to compress it.

11. In an elastic-fluid turbine, an inner casing, an outer shell or jacket surrounding said casin and means connecting the inner casing to the shell which comprise an element rojecting inwardly from the shell and overanging an end of the casing, and adjustable devices interposed between said element and easing.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JAMES WILKINSON. Witnesses:

JOHN J. CORBETT, JAMES H. NOLAN.

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