US1531687A - Water-gauge device for boilers - Google Patents

Description

March 31, 1925. 1,531,687

H. R. BURNETT ET AL WATER GAUGE DEVICE FOR BOILERS 0 Filed March 12, 1924 3 Sheets-Sheet l X NVENTOEZ ATTORNEYS March 31. 1925. 7 1,531,687

H. R. BURNETTET AL WATER GAUGE DEVICE FOR BOILERS Filed March 12, 1924 V 3 Sheets-Sneet 5 v ATTORNEYS Patented Mar. 31; 1925.

HENRY RIDLEY BURNETT AND DAN BREARLEY BREARLEY, OF BARROWIN-FUBNESS.

ENGLAND, ASSIGNQRS TO THE BABCOCK 8:, tVlfLGOIiZ COMPANY, (31? BAYONW J'EESEY, A CGRI-ORATION OF NEE! JE 13332.

i E, NE'W WATER-GAUGE DEVICE FOR BOILERS.

on-r 'urnees, langi iieiihon relate-e to lililUlGYfiliiEltte in i stood iron: with th is a (hag, aniiniitie front elevation of an lllli$-ltrative embodiment of our invention shown in col junct in with a high and low water steam whiatle ail: ran, the front of the containing: cai e and indicating scale being reuiored; 2 is a section on the line X Y 1, and i av section on the line I x 1 'V imam noticing and um i l eecription taken e annexed drawings, in which i 1 \IL j J i i--(l of Fig. l

in he eznbodnnent shown, a receptacle of L evluuirical e rape is *onnocted with the steam e and will the water space of a boiler u: d is movable up or down with variation of its weight due to the variation of the quantity of water therein.

Referring to the drawings, l denotes the recepta le clo C(l at both ends and suspended on kn el *5 from links 1*", Suspended l ft/ ill hnite edger of a forked beam B, which lb support on the hnlie edge tulcruni X which is tired to the back of the containing case '1. Near the uppe and the lower ends of the receptacle are attached 'i'icxihle U- tuhes U, vhieh are connected with the steam and water waces of the boiler reepcctively, and the limbs of which extend parallel with he eidcs of the case in a horizontal position and pass through the case, being securely clamped thereto.

The weight of the receptacle F is counterhaiunced by an adjustable counterweight \i' attached to the beam 1%.

The beam 1) is connected by means of ii that; ii to the pointer P, which is pivoted at Ii. The wei ht Vi is adjusted so that the beam i3 is horizontal when the receptacle l aiit full of water and the length of the ii in adjusted that under these condiioim the point: P lb al o in a horizontal now Read, Barrow-inreepecirvely, have in- *w and ii ul in;proreiiients gc Devices to Boilers, oi w: any; n; a Mao position, iniiicati ig that the water is at the normal wo ever. Since the U-tuhes l are ti'liilttltt l steam and watcr space; of the boiler, b miter rises in the boiler, it aim TiH'Ki in t inc iili'lQLU-JS receptacle chosen the iownwai ll, nioxcinent receptacle to nove being p .i'initted (hie cl-tubes. The downtn the ii \i iii-ovenient et main llconnector,

l indicatiz in thewater it will an important antage i:; had by the use oi t ie fiehaped connections i, in that the expaniaion or contraction of the tubes, (hie to varying condithan oi tci'iiperature in the tubes, is without etiert on the indi ator if or any control arrangement used in connection with the l l the water in the boiler falls, the XQx'tl'filj action taken place.

As it will be underetoiiid, the indicator can he made to inz-ignity the variations in the water level, as the extent of movement of the pointer P depends upon the relative the lever arms. An opal glass or lcngthn of I other scale (not shown) 15 fixed immediately behind the pointer P, the scale beingore/terably illuminated by an electric lamp fixed in the c: we. lly this means small movements of the pointer are made clearly visible from a considerable (lintance.

' 5 desirable that the ope ation of the device not interfere with that of the "water level indicator. in th arrangement wnown i ha re provided a connection between the indicator and the alarm such that movement of the alarm device is unable to iuiiuence the poaition oi the indicator. Such a connection it terin nonreactive? II-Iefcrring to l and the lever L, to which a weight ll" is attached, is pivoted at X The lower portion of this lever forms; a cam (Q The 41' trihution ot the weight is such that the lever ten to tall or rotate about the pivot lust prevented under normal condi tic us; from falling a latch L on the lei--v ll sliilahl r engaging a projectingbracket il fixed to the beam ll. the .Tiiiili' of o'ierlap oi" the latch i." and the bracket l determining the permissible travel of the beam B Without affecting the lever L. If, however, the end of the long arm of the beam 13 rises above or falls below predetermined points due to rise or fall of Water in the receptacle F, the latch L disengages the bracket B" and the lever L being released, rotates about the pivot X causing the earn 0 to press the stem S oi" a steam Whistle, whereby to blow the whistle until the lever L is reset. By means ol this arrangement, the operation of the alarm does not interfere with the indicator.

To minimize or prevent surging oi' the pointer, particularly in connection with marine work, there may be provided a station ary dash-pot casing Y, in which is mo tale a plunger Z, linked to an arm P integral with or fixed to the pointer P.

It Will be seen that expansion outw rdly of anchored branches of the U-tubes will be compensated for by the expansion innardiy of the fioatingbranches, so that the position of the receptacle in space will be substantially unaiiected by variation in the temperature of the U-tubes.

Instead of employing a steam whistle, the beam B may be arranged to close an electrical circuit, when the tree end of the long arm rises above or falls below predetermined points and that the closing oi: this circuit can be utilized to ring a bell or perform other operations, such as the starting or stopping of feed pumps.

in conjunction with, o in line or, the audible indicator above described, there may be provided an electrically controlled indicator. For instance, there may be associated with the beam a series of stationary contacts of different lengths adapted to enter a inercury cup or the like suspended irom the beam, each contact being associated with a particular circuit including a lamp, the mercury in the cup being common to all the circuits, so that, when the contacts successively dip into the mercury or emerge from the mercury as the water level in the reservoir rises or fails, successive electric lamps will be lit or extinguished.

$9 claim:

l. A water level indicating; device, coniin combination, receptacle, conduits adapted to co nect said receptacle vi ith the steam and w; spaces oi? a boiler and permitting inon-nient oi 'd re-zeeptacie in accordance with in l o mer therein, indicator actuating .means vi 1; a connected to said reite in, an. alarm device, an aiarni actuating means, and a nonreactive (onneetion l ,tvveen said indicator actuating means and said. alarm actuating means.

A water level liltilirttlifi dcviiie, coiir prising in comb I :ptacle, conduits adapted to ct meet said receptacle with the steam and water 1 es or a boiler and permitting movement said receptacle in er ordence the we ndi HRH, 1-,--/i iii-uieiit-n actuating idea 1, 7rd couineteu LU mt rel an aiarn act! 7 oicd icver ha in a nornia pee in in n hirl, its center o fulfil; is above pivot, and means associated xvi i said indicator actuating means lcr reiea:- said l mentioned lever ire-in said position upon entr i e movement in either direction of said indicate: actuating means.

ii. A eater ievei indicating device, comprising in combination, a R :eptacle, conduits adapted to coin t said recept; Li) with the ste in and water s; s oi a boiler and permitting movement or said receptacle in accordance with the weight of mater t erein, indicator actuating ineans (102111 sing a ierer connected to saiu receptacle, an alarm de- .,'i(l3, an alrni actiiaiiiig 1021116, a connection between said indicator actuatiiug means and. said alarm actuating means, said connection bein operative upon extreme movement of said indicator actuating means continuously to actuate said alarm until reset.

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