US1580003A - Draw works of rotary well-drilling apparatus - Google Patents

Description

gwvwtoz LL e f-lgzdck' .L. J. BLACK DRAW WORKS 0F ROTARY WELL DRILLING APPARATUS Filed Sept. 22, 1925 April 6 15 this character having Patented Apr. 6, 1926.

PATENT/OFFICE.

UNITED STATES.

mane. BLACKDF BEAUMONT, TEXAS.

nmw wonxs or ROTARY WELL-DRILLING APPARATUS.

Application filed September 22, 1925. Serial No. 57,936.-

To all whom it may concern:

Be it known that I, LEE J. BLACK, acitizen of the United States, residing at Beaumont, in the county of Jefferson and State of Texas, have invented certain new and useful Improvements in Draw Works of Rotary Well-Drilling Apparatus, of which the following is a specification.

This invention relates to improvements in draw-works of rotary well drilling appa- 'ratus. and more particularly to a-inethod of improvement water ma an apparatus for cooling the brake flanges of the drum shaft of the draw-works.

An important object of the invention is to provide a. construction wherein a shaft of associated therewith a plurality of brake anges may be so constructed that a cooling fluid-may be posi- .1 tively circulated through passages provided r in these brake flanges. I

A further object. of the invention is the f the method of conducting water to such cooling flanges whereby this be successively employed in a number 0 flanges associated withthe same shaft. These and other objects I attain by the construction shown in the accompanying shaft o A thereon a drum, generally designated at 11. 1 These drums usually consist of' a central drawing, wherein-for thepurpose of illustration is shown a preferred embodiment of my invention and wherein Figure 1 is a longitudinalsecti'onal view through the drum shaft of a' draw works constructed in accordance with myinv'en- Figu re 2 is sectionftlirougli one of the brake flanges'and the-associated flange hubshowing the manner of makingtliejconnec tions. therebetween.

Referring now more' particularly to the drawing 'the'numeral 10 indicates the drum a. draw-works having mounted body portion 12 andv a pair of end flanges 13 secured to the body portion and keyed, as at 14:, at their hubs 15 to the shaft; To

6 each flange 13 is secured a brake flange 16 with which a brake 17 is employed.

In the use of such a draw-works,.in lower'-' ing a string of tools in the well, it is quite common practice to.lower the tools against the action of the brakes with the result that the flanges 16 become heated and oftentimes burn out, necessitating their replacement before the work can be continued. To assist ports 20 and 21.

"flanges 16 overhan the hub and through the hub at diametrical y opposed points, I form These ports, in addition to being spaced circumferentially of the hub, are spaced longitudinally thereof and each port at its inner end communicates with a channel formed by grooving the inner wall of the hub 15 at 22 for approximatclythreequarters of the circumference of the hub,

The outer end of each port 20,21 is enlarged and screw-threaded, as at 23, for the reception of a conduit section 24. In alignment with this conduit section through the inner:

'wall of the flange 16, a threaded bore 25 is formed and with, this threaded bore 25, a

conduit section 26 'of such size that it slid ably fitswithin the conduit section 24 is engaged. It will be obvious that these two conduit sectionsmay be collapsed upon one another so as to'permit their threading into their respective seats and that when the threading is completed, these sections may be welded to one another, as at 27, and will form acontinuous conduit which is not subject to leakage as would be the ordinary coupling employed at this point.

By continuing the grooves 22 only through three-quarters of the innerv circumference of the hub sections15 of the flanges 13, a spaceis providedkfor the reception of the key 14 and at the same time the necessity for accurate alignment of ports 28 and 29 formed in the wall of the shaft 10 with the ports 20 and 21 is "eliminated and a fairly wide range of position provided for the formation of these ports. The shaft 10 isprovided with a longitudinal extending bore 30 with which the ports 28 and 29 COII1m111'1l-' cate and between the ports 28 and 29, this bore is reduced to produce a shoulder 31 against which a plug 32 may be seated to stop off the bore and insure that all, water passing through the bore must pass through the-port 29, theassociated groove 22, port 21, conduit sections 24 and 26, channel 19,

the second set of conduit connections 24 and 26, ports 20 and 28 to the bore. Thus, a forced circulation is provided through the drum and this circulation may be maintained in any suitable manner. I have shown feed and exhaust conduits 34 and having stufiing box-connection, as at 36 and 37 with opposite ends of the shaft, but it will, of course, be obvious that any suitable means for causing circulation through this shaft may be employed. It will, of course, be understood that the conduits 3-1 and 35 will be connected with the exhaust and intake of a pump ofsome suitable character. It will furthermore be obvious that the shaft employed might either be vertically or horizontally disposed and that the number of braking drums employed on the shaft might'be'extended, as is found desirable. I accordingly do not limit myself. to the specific structure hereinbefore set forth except as hereinafter claimed.

I claim:

1. .In combination with a hollow shaft, a hub mounted upon the shaft and having internal grooves each in communication'with the interior of the shaft, 2. flange on the hub, a braking flange upon the hub flange and overhanging the hub, a passage-way formed in each flange, axially aligned threaded openings formed in the braking flange and hub, the openings of the braking flan e communicating with the passages, the openings of the hub communicating with said grooves and a pair of telescopically engaged conduits having their ends in threaded engagement with the corresponding openings of the brake flange and hub and of a combined overall length greater than the distance between the brake flange and hub and a sealing connection between said conduits. p

2. In combination with a hollow shaft, a hub mounted upon the shaft and having internal grooves each in communication with said rooms a air of telesco )ica'llv enh 3 .1

gaged conduits having their ends in threaded engagement with the correspomling openings of the brake flange and hub and of a combined overall length greater than the distance between the brake flange and hub, a sealing connection between said conduits, ports in the walls of the shaft communicating with the grooves of the hub, the bore of the shaft being reduced intermediate said ports to thereby producea shoulder and a dam seated against said shoulder.

3. In combination with the hollow drum shaft of a d aw-works, a plurality of longi tudinally spaced braking drums mounted upon the shaft, a continuous channel formed in each braking drum, means for causinga flow of fluid from end to end of the drum shaft, means for positively causing circulation of the fluid through the passage of each brake flange during its passage from end to end of the drum shaft including conduits communicating at circnmferentially spaced points with the passages of the brake flanges and at longitudinally spaced points with theinterior of the drum shaft and a dam in the drum shaft between the points of connection of each inlet and outlet conduits of each brake flange with the interior of the drum shaft, the bore of the drum shaft being reduced intermediate the point of communication of the inlet and outlet conduits of each brake flange to produce shoulders, the ,dams being seated against said shoulders. I

In testimony whereof I aflix my signature.

LEE J. BLACK.

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