US1554076A

US1554076A - Pumping apparatus

Info

Publication number: US1554076A
Application number: US749195A
Authority: US
Inventors: Gunnar C Engstrand
Original assignee: Oil Pumping & Reclaiming Compa
Current assignee: Oil Pumping & Reclaiming Compa; Oil Pumping & Reclaiming Company Inc
Priority date: 1924-11-11
Filing date: 1924-11-11
Publication date: 1925-09-15
Anticipated expiration: 1942-09-15

Description

G. C. ENGSTRAND PUMPING APPARATUS Filed- Nov. 11 1924 IIIHHIIII kWh 5555 ZZ 1 I im, KWW/ awwentoz Patented Sept. w, 1925..

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F BROOKLYN, "NEW YORK, ASSIGNOR T0 01L PUMPING &

PUMPING APPARATUS.

a lication filed November 11, 1924; serial 1%. 749,195.

To all whom it may concern:

Be it known that l, German (3. ENG- -\s'rRAND, a subject of the King of Sweden, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements 1n Pumping Apparatus, of which the following is a specification.

My invention relates to a pumping apparatus and method for the withdrawal of fuel oil and residuefrom the tanks of a vessel.

This liquid material is viscous, sticky and in cold weather almost jelly-like, and due to its nature it cannot be pumped either in a solid column or in an aerated one.

lln order to pump such been found necessary to transmit it by means of an air stream in a broken up condition through the transmission hose. Such an arrangement requires. spacious vacuum tanks and large capacit vacuum pumps. 1 have discovered that y means of doing away with the spacious vacuum receptacles hitherto used and connecting the vacuum pump or exhauste'r tothe transmission line by means of a Joy-pass, I am able to reduce the required capacity of vacuum pump to about one fifth of the size required when receptacles are used.

I have also discovered that by so arranging the transmission line that thedischarge end of the transmission forms an air sealed leg I am able to make the bypass connect1on at a point above the height to whlch a vacuum can lift liquids like oil and water. By this arrangement it is possible to deviate practically all the air into the by-pass of the exhauster while the g by its momentum carried past the by-pass and forcibly ejected against the atmospheric pressure, into the receiving barge.

In the drawing 3- I drawing in which like material it has "several openin s pumped material is Figure 1 shows the general pumping ardesignate correspond the registering openings 17 and 19.-

- A flexible hose 3 is shown connecting the ship tank with the receiving barge and this hose transmission line has a lateral by-pass line 4 at the end of which the steam exhauster 5 is attached.

The lateral by-pass connection is made by means of a Y 6 so placed that the entrained liquid material will separate from the air assisted by gravity.

The steam ejector 5 comprises a steam pipe nozzle 7 which is directed into a properly designed throat piece 8 to which the air inlet 9 leads.

The steam ejector is shown supplied with legs 10 adapted for horizontal mounting.

The intake end of the transmission line 3 is supplied with a nozzle 11 having the upper part 12 of the same diameter as the line and a lower restricted neck part .13 to be inserted in the material to be pumped.

The upper part 12 is provided with a steam air blower 14 comprising in combination the air conductor 15 inside which the steam pipe nozzle 16 ends.

The air conductor 15 is provided with 17 and a turntable sleeve 18 is provide with an equal number of registering openings 19-, thus permitting a perfect air control.

Acap 20 closes'the outside end of the air conductor 15 to pipe nozzle 16 is welded. 1

The drawing shows [the steam blower welded to the intake nozzle 11.

The discharge end of the transmission line is shown submerged in the liquid mate rial in the barge.

Proper steam hoses 21 are connected to the steam exhauster 5 as well as the steam air blower 14 and are conveniently hooked up to the steamsupplycithe r on the vessel or on the barge.

The method of procedure is as follows:

Steam being a dm1tted to the steam air transmission line 3 and the liquid in the barge will rise in the outboard leg a corresponding height.

Care must e taken that the Y 6' is placed so hi h 'that'the liquid column in the air not at any time reach the bypass line 4:.

Steam is also admitted to the blower 14: and atmospheric air is sucked in through which cap the steam exhauster 5, a suction, is created in the seale discharge leg of the transmission will,

The nozzle neck 13' is now inserted into the liquid material, whereupon the liquid is sucked up into the hose forming a more or less aerated liquid column into which the steam condensesafter having injected the air therein.

With the intake end sealed in this manner a vacuum is being built up in the transmission line more quickl resistance of the ascen ing column, which resistance is in direct proportion to the height of the column.

. A vacuum will soon be reached at which the ascending column will part at the air admittance, and this aerated column part will be propelled by the air and steam filling in behind and the aerating bubbles will, in expanding, break up the column more or less into a gush rushing through the hose. It is to be noted that the main of the air is not confined inside the gush, but passes by and around the gush during its passage through the hose. Due to this condit-ion the air is readily separated from the gush and sucked into the aspirator line 4, while the gush due to the momentum, which the passing air stream has imparted, will not only rush past the lateral by-pass inlet but *also forcibly strike and depress the sealing liquid column in thedischarge end of the transmission hose which discharges into the receiving barge.

It is also to be noted in this connection that the nozzle neck 13 shall not be too deeply inserted into the liquid material as ithas been found that the amount of air which passes through the registering openings 17 and 19 is inadequate to fill in behind the gushes. Therefore, the extra amount of. air needed at this instant will have to be admitted through the intake end proper.

It is also to be noted that the amount of air admitted to .the line at this instant is much larger than the amount of air which the air exhauster is able to suck out and the vacuum is accordingly reduced in the transmission hose. With the vacuum lowered another aerated column gets a chance to form at the intake end whereupon the operation is automatically repeate I claim 1. In a vacuum pumping apparatus, a transmission line comprising a suction leg and a discharge leg connected so as to form a continuous. transmission, said discharge leg having a hermetically sealed discharge end, a steam operated air exhauster bypassed from said discharge leg at a plane substantially above the level to which the than the frictional liquid material may be caused to ascend in said discharge leg when acted upon by the vacuum necessary for the transmission.

2. In a vacuum pumping apparatus, a transmission line comprising a suction leg and a discharge leg connected so 'as to form a continuous transmission, said discharge leg having a hermetically sealed discharge end an air exhauster by-passed from said discharge leg at a point substantially above the leve to which the liquid material may be caused to ascend in said discharge leg when acted upon by the vacuum necessary for the transmission. 7

3. An air transmission line for liquids comprising a suction leg and a discharge leg aligned so as to form a continuous transmission and having a by-passed steam exhauster creating an air current therein, and means for preventing the liquid material from entering and passing through the steam exhauster. I

4. In a vacuum pumping apparatus, a transmission line substantially U-shaped comprising a suctionleg and a discharge leg aligned so as to form a continuous transmission, said discharge leg having a hermetically sealed discharge end, a steam operated air exhauster by-passed from said discharge leg at a plane substantially above the level to which the liquid material may be caused to ascend in said discharge leg when acted upon by the vacuum necessary for the transmission.

5. In a vacuum pumping apparatus, a

transmissionline substantially U-shaped comprising a suction leg and a discharge leg alined so as to form a continuous transmission, said discharge leg having a hermetically sea-led discharge end, an air exhauster by-passed from said discharge leg at a point'substantially above the level to which the liquid material may be caused to ascend in said discharge leg when acted upon by the vacuum necessary for the transmission. v

6. In a vacuum pumping apparatus, a transmission line comprising a suction leg and a discharge leg alined so as to form a continuous transmission, saiddischarge le having a hermetically sealed discharge en an air exhauster by-passed from said discharge leg at a point substantially above-the level to. which the liquid material may be caused to ascend in said discharge leg when. acted upon by the vacuum necessary for the transmission.

GUNNAR e. ENGSTRAN'D.