US2604168A - Frostproof deep well pump arrangement - Google Patents

Description

y 22, 1952 P. M. VAN ACKEREN FROSTPROOF DEEP WELL PUMP ARRANGEMENT 3 Sheets- Sheet 1 Filed Feb. 13, 194'? .rmmu 2. 04m: OZESBm l8 Inventor No Load Water Level NOTE 7 Paul M. Van Ackeren Water Level At 260 Gal. Per Mln.37 Feet.

y 1952 P. M. VAN ACKEREN 2,604,168

FROSTPROOF DEEP WELL PUMP ARRANGEMENT Filed Feb. 15, 1947 5 Sheets-Sheet 3 Fig.3.

- I f'f- 39 22 i E. 1% l6 2/ 4 23 2 25/0 x 20 I i n Fig.5.

Inventor Paul M. Van Ackeren Patented July 22, 1952 UNITED STATES PATENT OFFICE mos'rrno'or' DEEP WELL PUMP ARRANGEMENT Paul M. van Ackeren, (mam, Minn. I 'Applic'ationl ebruary 13, 1947, Serial No. 728,312

I 3 Claims- (Cl. 166-1) This invention relates to deep well pump set= tings ofthe type in which water is withdrawn from water bearing sandstrata and thelike by centrifugal-pumps and it-has for its main object to simplifythe construction of the entire pump arrangement, to reduce-the expense due to' the upkeep, andto eliminatedrawbacks connected with'long periods of inactivity. Y I II More particularly the invention has for ts object'to eliminate the danger of free'zin'g inv however to be understood that the pumping arrangement is illustrated and described by way of example only, in order to be able to explainthe principles on which the invention is based. The

example is therefore not limitative and it will be clear to the expert that application of the same principles to other known pumping arrangements will result in mere modifications of the invention as illustrated and described. Such modifications do not necessarily, therefore, constitute a departure from the invention. I I I The invention is illustratedin the accompanying drawings in which:' r I Figure 1 is a graph diagrammatically illustrating the relation between the water level in the water bearing strata and 'the output of the pumping arrangement.

Figure 2 is a sectional elevational view through the plane of symmetry of the pumping arrangement indicated at -22 in Figure 3. I

Figure 3 is asectional plan view, thesection being taken along line 3--3 in Figure Figure 4. is a diagrammatic sectional elevational view theisec'tion being itakenialong line 4-4 of Figure 3. I

Figures 5 and 6- are a sectionalelevationaland plan view respectively or the strainer. I I

The principle on which thelin entionis based will be best understood by referring first-to. the graph shown in Figure '1 'which :.-s hows the relation'betwee'n the output of the pump in gallons per minute and the location of the water -:1e v el in the stratum or strata from which the water is withdrawn. The chart indicates the scales for these two factors along the abscissa and on the right-side of the diagram along the vertical line. On the left side the pumping head is indicated. The fullline a indicates the change of the water level, the curve b indicates the head capacity. of

the pump and therefore also the performance'of the pumping arrangement. The curve a shows how the water level which isonginauy at eighteen feet (no-load-water level) when the pump is atprest, drops with increasing output of the pump. With the falling, ofthe water level the pumping head increases as indicated on the pumping head scale.

When the level of the water in the water bear ing stratum or strata drops, water is replaced by air and when the pump stops the air will again be driven out by the rising water level.

The pumping arrangement itself comprisesa centrifugal pump Ill of a well known type which is arranged within the main casing II in the customary'manner. The arrangement moreover comprises the two gravel pack casings l2, I3,

arranged for packing the water bearing strata with gravel; this construction again is of a well known or customary type, the drawing showing by way of example an arrangement such as described in Patents No. 2,025,317 or 1,748,589 granted to Thomas W. Thorpe. At' the end of the main casing II a strainer or screen 14 is arranged which projects into the gravel pack [5. The strainer is shown in detail in Figures 5 and 6. This gravel pack is formed in a stratum of Water bearing sand around said strainer or screen 14 in order to facilitate the flow of water in the region near the center of the inflow. The water in this case may be pumped from the well in considerable quantities without running short of water. Such a shortage would occur without the gravel pack, as fine sand would otherwise be deposited all around the strainer or screen, which would constitute a great frictional obstacle, and would partly pass through the strainer.

Once the gravel "pack has been formed by means of the two gravel pack casings 12, 13' it has to be keptactive. This is necessary, because the. gravel; pack, when dormant for some considerable time has a tendency to get 'clogged'by incrustation and by organisms such as algae.

,The pump in is located at a suitable spot 'above ground, as shown, and l'sraconventional pump, forinstance of the centrifugal type. It delivers into the delivery, pipe lfileadingkto thetankfnot shown) which enters an'outlet and valve pit 20 arrangedybelow ground level in the example shown. The delivery pipe is controlled by a delivery valve 2!. Near the valve 2| a branch connection piece 22 is arranged, which has a main outlet 23 inclined towards the axis of the branch connection piece. This outlet is connected with outlet pipe 40 leading to the outlet end of pump It. A smaller outlet 24 is connected with a Y-piece 25 the two branches of which are connected with the casings H, I2, I3. The branch 26 of the Y-piece is connected with the central or main casing II by pipe 29 while the ground, a main casing and two gravel pack casother branch 21 is connected with a pipe 39 which stratum, a laterally extending delivery pipe in its turn leads to a further Y-connection'30:the two branches 32, 33 of which are connected with the gravel pack pipes l2, l3 respectively.

The Y-piece 25 also contains av further valve pipes 3| in the branch leading to the gravel The two valves 2 I, 3! are operated from without and their, spindles 34, 35 are therefore ex tending upwardly through stands placed on the cover plate of the pit 20 and 'are carrying hand wheels 36, 31, respectively, e

The pit 20 is accessible through a' manhole 38 which is usually closed The operation of the pump in general'will be clear, as this operation does not differ from that of known arrangements As will vbe clearly seen merely the head of pump it and pipe 4B are exposed to. the outside ternperature." This pipe 40 is now automatically drained by the arrangement shown'according to the invention.

As has been stated air will be replaced by water and water will be repla'ced'by' air through the medium of pipe connection 29. This pipe connection 29'will allow the casing air to replace water in the outlet pipe in the piece 22 where the pipes 29 and 4i3'are joined. This results in the draining of the line 40 and of all those parts of the installation which are exposedto freezing temperatures. .Thi'si draining occurs as soon as the pipe 29 is filled with air from the air rising in main casing in upon failure or stoppage of the pump. -The penetration of air into the piece 22 allowsthe water contained in pipe 40- and the head of pump I 0 to siphon back into the well. No water will therefore remain in the pipes exposed to' freezing temperatures.

This fact makes it necessary to construct a special heat insulating house for the pump and to head said house as long as freezing temperatures prevail. V V

It is to be understood that the specific known pumping arrangement shown is merely 'an example and that other pumping arrangement may be substituted without affecting the invention.

1. A deep well pumping arrangement for pumping fiuid from a fluid bearing stratum com-- prising a centrifugal pump having" apump head above ground, a main casing and further casings;

a laterally extending delivery pipe below ground; a downwardly inclined;pipe partly above and partly belowiground, connecting said pump head above ground withthe delivery pipe below ground; means for: automatically emptying the pump structure above ground andlthe pipes connectedjwith it upon stoppage of the :pump, 'said- :21 70 the dqwnwardly. inclined pipes aconnection pipe I 7 leading from ;a further pipe branch of the .ings leading downwardly into the fluid bearing arranged below ground level, a downwardly inclined pipepartly above and partly below ground level, leadingfrom the pump head above ground *to the delivery'pipe, a lateral junction pipe section with a plurality of outlets; one of said outlets being connected with the delivery pipe, a further lateral outlet of said junction pipe being connected with said downwardly inclined pipe leading from the pump head, a laterally disposed Y -shaped pipesystem ;with three pipe branches, one of said branches being a central branch pipe connected withone of the outlets of the lateral junction pipe. section, another branch of the Y-shaped pipe system Qbeing la lateral branchconnected with themam casing, and a second laterally disposed pY shaped pipe system, having a central branch pipe; connecting with the third branch pipe of the first-named Y-shaped pipe system and two' further branch pipes in said second v shaped pipe system, each connected with one ofthe gravel pack casings, said Y-shaped pipe system being located in substantially the same level-to permit emptying of the pump struc f ture above ground and of the pipes connected with it upon stoppage of said pump. V

3. A deep ;well pumping arrangement for pumpingfluid from a fluid bearing stratum com: prising a centrifugal pump, having a head above ground, a rnain casingand further casings ex-,

tending f downwardly into the fluid bearing stratum, a laterally extending delivery pipe below ground, a downwardly inclined discharge pipe,

partly above and partly below ground, connecting 3 sections above groundand from the discharge pipe upon stoppage of the pumping operation, said means including alaterally extending connection pipe between the disc a ge pipe at thepoint of connection of the downwardly inclined discharge pipe with the main casing and a second laterally extending connection pipe system, conwith said further casings. I

LPAULI AQK,EIRE,

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