US1153912A - Gas absorbing and indicating apparatus for gas-analyzers. - Google Patents

Description

1. w. & 0.. w. HAYS;

- GAS ABSORBlNG AND INDICATING APPARATUS FUR GAS ANALYZERS.-

APFLICAIION mzusur. 14. 1914.

1 1 53,9 1 2. Patented Sept. 21, 1915.

H. II I IIHLMM II H ll ml.

ii I! 'I El lfl W TNESSES: W

EINVENT Rs I JOSEPH w. Hays AND CHARLES w. HAYS, or ciiioaeo, ILLINOIS.

GAS ABSORBING- AND I NDICATING APPARATUS EUR GAS ANALYZEM.

Specification of Letters Patent.

Patented Sept. 231, i915.

priginal application filed July 17, 1913, Serial No. 779,547. Divided and this application filed September 14,

' 1914. Seria1No.861,738.

. To all whom it may concern:

. Be it known that we, JOSEPH W. HAYS and CHARLES WV. HAYs," citizens of the v United States, residing in the city of Chi-- cago', county of Cook, and State of Illinois,

have invented certain new and useful Improvements in Gas Absorbing and Indicating Apparatus for. Gas-Analyzers, of which the following is a specification.

Our invention relates especially to automatic gas analyzers but it may be applied in a practical way to hand manipulated apparatus, as it afiords means for a direct reading of the result of the analysis while the gas is in the absorption vessel, thereby materially reducing the time required to make a determination.

We attain the objects of our invention by the means illustrated in the accompanying drawings, in which for the sake of -clearness we have shown only thoseparts of our automatic gas analyzer that relate to the present invention. The fluid leveling device claimed in our copending application, Serial N'umber 779,547, of which the present application is a division, and the temperature controlling device claimed in our c0- pending application, Serial Number 861,7 37 are not shown in the drawing. In our copending application, Serial Number 861,736 we show another means for accomplishing the same ends attained by the present invention. In the drawing, B is the burette or gas measuring chamber and.A the absorptioni chamber. These are connected by the capillary tube, CT. B -B is a rubber bag immersed in the chemical solution, PS, with which A is charged. The upper part. of A may be packed with a fibrous material, SW if a a d OT are gas inlet and outlet the water the exact quantity of gas required tubes, leading respectively to and from B P is a gas pump, operated by a stream of water delivered through the pipe, W'P The water is discharged from P into the stand-pipe, 'StP The stand-pipe is solwhen the water has accumulated in the stand-pipe to the overflow point, OF. The tubes, IT and PP, connect with the pipes, IT -and OT as shown, and

are soldered into the top of WC BP is a by-pass valve, connecting the tubes, IT and OT.

The measurement of the gas sample at atmospheric pressure is accomplished by means of the tube, MT. vand the gas'bag, GB as hereinafter described. The appagas pump, or aspirator, P which is op erated by a small stream of water delivered through f WP creates a partial vacuum in the pipe, OT. This is eommunicatedto B and the pipe, lTlthe-latter being connected with the source of gas supply; As a result of the lowered pressure, gas flows through, IT ,'B and OT to P where it mingles with the water. The water, W i's dischargedinto" StP and accumulates in VC The water in a few moments reaches and seals the lower end of StP whereupon a quantity of air is trappedin C, This air is compressed by the static action of the water accumulating in StP As a result ofthis pressure Water is displaced from .IT into the tubes, IT, OT ,a n d MT and the burette, B. lVhen the water reaches and seals the lower ends of the tubes IT and OT the flow of gas is shut off and a quantity of gas is trapped in B and MT The gas ow is shortcircuited through BP folio ing the stoppage of flow through B? As the water rises toward B some of the trapped gas is displaced into MT and the distensible gas bag, GB When MT is sealed by is trapped OH in B and in the tube connecting the upper part of B with IT This exact quantity of gas is measured .at

the pressure of the atmosphere. The water' partly filled with I the chamber .NVC through the-tubes, IT and greatly enpedites bag, RB. and water is in turn expelled herefrom into the tube DT It is plain to be seen that the height-to which the water rises along the scale, 1S is inversely proportional to the volume -water, V, but such indicationcould not be relied upon. It would be necessary to make up a chemical solution of apredetere mined specific gravity and the indications would-be correct, assuming proper calibrat'ionof the scale, 5 IS, as long as ,there was no material change in the gravity of the chemical solution. But the specific gravity of the-chemical solution would not remain constant; It would change as the gas absorbed would form salts in the solution. It would thereforebe impractical, for the above and other reasons, to employ the absorber chemical as. an indicating fluid. To meet the requirements we have devised the arrangement, herein described and claimed.

I By this arrangement we are able to confine the chemical in the chamber A: where it will not, be exposed to anything except the gas introduced into A. It will be necessary in some cases to employ a chemical affected by the oxygen of the air, and if such chemical were displaced into an open tube and used as an indicating fluid it would rapidly deteriorate. The arrangement enables us to employ a liquid, such as water, for an indicating fluid and the specific gravity being constant, no error will result in the indications. The use of the flexible rubber bag renders it possible to transmit pressure from the one liquid to the other withoutloss.

\Ve claim: i

1. A gas analyzer consisting of gas measuring and absorber vessels; a chemical in said absorber vessel; a tube sealed into said absorber vessel and a distensible bag within said vessel attached to said tube.

2. A gas analyzer consisting of connected gas measuring and absorber vessels; a liquid chemical in the absorber in said absorber vessel; a distensible bag within said vessel attached to said tube and a liquid in said bag and said tube.

' 3; A gas analyzer consisting of connected gas measuring and absorber vessels: a liquid chemical in the absorber vessel a tube sealed into said absorber vessel; a distensible bag within said absorber vessel attached to said of gas absorbed in- A If 1t 1s desired .to produce a record of thejanalysls, a low pressure recording gage the quantity of liquid so displaced.

essel a tube sealed tube; a liquid in said oa'gand saidftube and lQA gasanalyzer cons1sting of connectedgas measuring and absorber vessels; a liquid chemical in said absorber vessel; a tube sealed into said vessel; a distensible bag within said vessel attached to said tube; a

liquid in said bag and said tube; means for forcing gas from said measuring vessel into said absorber vessel thereby displacing'said l qu d chemical, deflating said bag nd displaclng said liquid and means for m asuring 5; A gas-analyzer consisting of connected gas measuring and gas absorber vessels; a chemical in the absorber vessel; a distensiblt bag in said absorber vessel; a fluid in said bag; an exterior. connection with said bag;

means for forcing gas from said measuring vessel into said absorber vessel, deflating said bag and thereby applying pressure to the fluid in said bag, .and means for mea's- 'uring the pressure applied to said fluid.

6. A gas analyzer consisting of connected gas measuring and absorber vessels; a liqu d chemical-1n theabsorber vessel; means for forcing gas from said measuring vessel into the absorber vessel, displacing said liquid chemical, and means for taking up the displacement of said liquid chemical.

'T. A. gas analyzer consisting of connected gas measuring and gas absorber vessels; a liquid chemical in said absorber vessel; means for forcing gas from said measuring vessel into said absorber vessel, and a compressible body in said vessel to take up said displacement.

S. A'gas analyzer consisting of connected gas measuring and gas absorber vessels; a chemical in the absorber vessel; a tube sealed into said absorber vessel; a distensible bag within said vessel; attached to said tube; a liquid in said bag and said tube; pressure means for transferring gas from said measuring vessel to saidabsorber vessel, displacing the liquid in said bag and said tube, and

means for restoring the liquid in said tube .sis

cated therein and means for registering or indicating the compression of said chamber 12. A gas analyzer consisting of 'a gas measuringmeans, a gaslabsorber means and a pressure indicating means, thejlatter c011- ting of a compressible eha-mberPactuating an indicating device. f I if" 131 A gas arialyzer eonsistingfo fconnected gas measuring and Qabsorber yessels, stWQ;

sorber vessel and sin separating medium be- .tWeen' said liquids.

In Witness whereof we have hereunto set J OSEPI7 I "W, HAYS. [10s,] GHARLES HAYS. '[L.s.] Witnesses: v HARVEY -G.. Hmrs,

' FLORENCE -M. N0RMAN;

our-hands and seals this 17th day pf August,

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