US3212450A

US3212450A - Ejector type pumping apparatus

Info

Publication number: US3212450A
Application number: US245050A
Authority: US
Inventors: Castellot Antonio Echeverria
Original assignee: Individual
Current assignee: Individual
Priority date: 1962-12-17
Filing date: 1962-12-17
Publication date: 1965-10-19
Anticipated expiration: 1982-10-19

Description

oct. 19, 1965 A. E. CASTELLQT 3,212,450

EJECTOR TYPE PUMPING APPARATUS Filed Deo. 17, 1962 INVENTOR BY f Qd/Qvlp/ om? ATTORNEYS United States Patent O 3,212,450 EJECTOR TYPE PUMPING APPARATUS Antonio Echeverria Castellet, 505 Palenque St., Mexico City, Mexico Filed Dec. 17, 1962, Ser. No. 245,050 6 Claims. (Cl. 103260) This invention relates to an ejector type pumping apparatus for raising fluids and more particularly to an ejector type pumping apparatus having novel means for inserting and recovering the impeller 4for inspection or other purposes. v

In conventional ejector type pumping apparatus the impeller thereof normally is formed integral with or rigidly secured to a section of the pump tubing. Generally, Whenever it is desired either to insert or remove such impellers it is necessary to remove and disassemble sections of the tubing with various types of heavy equipment including cranes, hoists and the like resulting in considerable expense and delay.

Accordingly it is the general object of the present invention to provide an improved ejector type pumping apparatus.

Another object of this invention is to provide an improved ejector type pumping apparatus having novel means for inserting and recovering the impeller thereof.

A further object of this invention is to provide an improved ejector type pumping apparatus having novel means for inserting and recovering the impeller thereof whereby no major disassembly of the pumping apparatus is required.

A sti-ll further object of this invention is to provide an improved ejector type pumping apparatus having novel means for inserting and recovering the impeller thereof whereby no additional special equipment is required.

Another object of this invention is to provide an improved ejector type pumping apparatus having novel means for rapidly positioning and recovering the irnpeller thereof, which involves a simple and inexpensive construction.

Other objects and advantages of the present invention will become apparent to those skilled in the art, from the following description when read in conjunction with the accompanying drawings wherein:

FIGURE 1 is an elevation view of the invention; and

FIGURE 2 is an enlarged vertical section of the invention having the top portion thereof broken away.

In accordance with the broad aspects of the present invention, there is provided an ejector type pumping apparatus for raising fluids which comprises a fluid passage means having at least one opening in a lower portion thereof and an ejector type impeller disposed in the fluid passage means and displaceable along a predetermined length thereof. The impeller is provided with at least one inlet port communicating with the entraining zone thereof and is adapted to .be retained under predetermined conditions in a preselected zone in the fluid passage means so that the inlet ports thereof register with the openings in the fluid passage means. Additional means are provided for preselectively injecting a fluid in opposite directions in the fluid passage means to displace the impeller along the predetermined length thereof. By simply reversing the direction of ow of the uid in the iiuid passage means, the impe-ller can either be positioned for pumping or for removal vfrom the apparatus for inspection or other purposes.

Referring to the drawing, there is shown a preferred embodiment of the invention comprising a suitable casing 10, sunk into a stratum 11 and communicating with an underground reservoir of fluid 12 which constitutes the iluid to be raised. The pumping apparatus more par- 3,212,450 Patented Oct. 19, 1965 ice ticularly comprises a pair of parallel, elongated pumping tubes 13 and 14 which are joined at the upper and lower ends thereof to provide a substantially elongated O-shaped closed fluid passage means. The tubes 13 and 14 can be constructed of any suitable material and can also be constructed in sections in accordance with conventional practice. As in other similar ejector type pumping equipment, the lower portions of the pumping tubes are adapted to be submerged in the reservoir of iluid to be raised. The upper portions thereof are located above ground as shown.

Surrounding a portion of the lower end of pumping tube 13 and suitably secured thereto is a closed jacket member 15 having a reduced depending portion 16 respectively defining a suction chamber 17 and an admission chamber 18. The reduced portion 16 is provided with a plurality of inlet ports 19 for entry of the fluid to be raised. Disposed in the reduced portion 16 is a one way valve 20 comprising a transversely disposed disc 21 formed with an opening 22 through which the fluid passes, the upper end of the opening 22 providing a seat for the ball member 23 which is restricted in vertical upward movement by means of a restraining bar 24. The lower portion of pumping tube 13 also is provided with openings 25 which provide communication between suction chamber 17 and the interior of pumping tubes 13 and 14.

Disposed in tube 13 and adapted to be displaced along a predetermined length thereof is an impeller 26 of substantially conventional construction havin-g a converging zone 27, a low pressure fluid entraining zone 28 and a diverging zone 29. The impeller also is provided with inlet ports 32 which open into the entraining zone thereof and which are adapted to register with openings 25 when the impeller is seated on annular seat 31 provided by the shoulder portion 30 formed on the inside surface of tube 13 below openings 25. The diameter of the impeller is slightly smaller than the inside dia-meter of the tube 13 to facilitate the displacement thereof a-long the predetermined length of travel thereof. To prevent passage of fluid through the annular spacing between the impeller and the tube 13, the impeller is provided with a packing 33 or other suitable sealing means.

Referring to the upper end of the apparatus as shown in FIGURE 1, the tube 13 is provided with an extension tube portion 34 which is formed integral and in alignment therewith. The aligned extension tube portion 34 has a cap member 35 threadedly mounted on the upper opened end thereof which is adapted to be readily removed for purposes as will later be described. An inlet tube 36 is connected to the pumping tube 13 just below the extension tube portion 34, which is connected at its `opposite end to a suitable pump. Connected to the upper portion of pumping tube 14 is a discharge tube 37. Finally, interconnecting the inlet tube 36 and the pumping t-ube 14, below the discharge tube 37, is a bypass tube 38. To control the flow of fluid through the various tubes there is provided a plurality of valves including valve 39 disposed between the junctions of inlet tube 36 and tubes 13 .and 38, valve 40 in tube 13 below the junction thereof with inlet tube 36, valve 41 in bypass tube 38, and valves 42 and 43 in pumping tube 14 disposed on either side of the junction thereof with the discharge tube 37.

During the normal pumping operation of the apparatus, the impeller is seated on the .annular seat 31 so that the inlet ports 32 of the impeller register with the openings 25 in the tube 13. With the impeller so positioned and the cap member rmly screwed on,

valves

39, 40 and 43 are opened and valves 41 and 42 are closed so that fluid under pressure ows from the pump through inlet tube 36, pumping tube 13, impeller 36, pumping tube 14 and discharge tube 37. Under such conditions, a venturi effect is produced in the impeller to cause the fluid 12 to be drawn in through openings 19 into admission chamber 18, through one way valve 20, suction chamber 17 and through registered

openings

25 and 32 into the low pressure entraining zone 28 where the fiuid 12 joins the main stream of fluid in the pu-mping apparatus. As the fluid continues to flow through diverging zone 29 in the impeller, the velocity thereof decreases and the pressure increases sufficiently to overcome the back pressure in the apparatus and force the fiuid up through pumping tube 14 and out through discharge tube 37. The force of the fluid during the pumping operation also is sufficient to retain the impeller in the seated position as shown in FIG- URE 2 to maintain

openings

25 and 32 in registry. Also, it will Ibe noted that the packing 33 between the impeller and the pumping tube 13 acts as a seal to isolate the high pressure region upstream from the low pressure region in the entraining zone.

To remove the impeller from the apparatus, valves 40, 41 and 42 are opened and valves 39 and 43 are closed. This essentially will reverse the flow of fluid in the apparatus so that the fluid will flow through inlet tube 36, bypass valve 38, pumping tube 14, pumping tube 13, through the top portion of tube 14 and out through discharge tube 37. Under such rever-se flow, the impeller will be unseated and forced up through tube 13 into eX- tension tube 34 from which it may be recovered 'by removing cap member 35. It. will be noted that when the direction of duid is thus reversed, uid is prevented from escaping through openings 19 by means of closed valve 20.

It would also be possible to recover the impeller without the use of fluid flow in the apparatus simply by the use of a fishing tool which could be inserted through tube 13 from the top opening in extension tube 34. To replace the impeller in the apparatus it would only be required to open valve 40 and insert the impeller in the `aligned extension tube 34 permitting it to fall into position at rest on the annular seat 31. To more quickly and positively seat the impeller a small amount of fluid may be injected into tube 13.

It will thus be appreciated that the present invention provides .an improved ejector type pumping apparatus wherein the impeller may be quickly inserted and recovered simply by means of reversing the direction of flow of the pumping fluid, requiring no major disassembly of the apparatus nor any special type of recovery equipment.

From the foregoing detailed description, it will be evident that there are a number of changes, adaptations, and modifications of the present invention which come within the pr-ovince of those skilled in the art. However, it is intended that all such variations not departing from the spirit of t-he invention be considered as within the scope thereof as limited solely by the appended claims.

What I claim is:

1. An ejector type pumping apparatus for raising fluids comprising ,a fluid passage means hav-ing at least one opening in a lower portion thereof, a closed jacket member surrounding and secured to a lower end of said fluid passage means defining a suction chamber communicating with said opening in said uid passage means, said closed jacket member having intake openings, 4one way valve means disposed in said suction chamber between said intake openings and said opening in said fluid passage means, an ejector type impeller having an entraining zone disposed in said fluid pass-age means and displaceable along a predetermined length thereof, said impeller having at least one inlet port communicating with the entraining zone thereof, means disposed in said fluid passage means at one end of said predetermined lengt-h for seating said impeller so that the inlet port therein registers with said opening in said fluid passage means and fluid means for displacing said impeller along said predetermined length of said fluid passage means.

2. An ejector type pumping apparatus for raising fluids comprising fluid passage means having at least one opening in a lower portion thereof, a closed jacket member surrounding and secured to a lower end of said fiuid passage means defining a suction chamber communicating with said opening in said uid passage means, said closed jacket member having intake openings, one way valve means disposed in said suction chamber between said intake openings and said opening in said iiuid passage means, an ejector type impeller having an entraining zone disposed in said fluid passage means and displaceable along a predetermined length thereof, said impeller having at least one inlet port communicating with the entraining zone thereof, means disposed in said fluid passage means at one end of said predetermined length thereof for seating said impeller so that the inlet port therein registers with said opening in said fluid passage means and means for pre-selectively injecting uid under pressure in opposite directions selectively in said fluid passage means to displace said impeller along said predetermined length thereof.

3. An ejector type pumping apparatus for raising fluids comprising fluid passage means having at least lone opening in a lower portion thereof, a closed jacket member surrounding and secured to a lower portion of said fluid passage means defining a suction chamber in communication with said opening in said fluid passage means, said closed jacket member having intake openings, one way valve means disposed in` said suction chamber between said intake openings and said opening in saidy fluid passage means, an ejector type impeller having an entraining zone disposed in said fluid passage means and displaceable along a predetermined length thereof, said impeller having at least one inlet port communicatingwith the entraining zone thereof, means-disposed in said fluid passage means at one end of said predetermined length thereof for seating said impeller so thatv the inlet port therein registers with said opening in said fluid passage means, means for preselectively injecting a fluid under pressure in opposite directions selectively in said fluid passage means to displace said impeller along said predetermined length thereof and sealing means disposed on said impeller and extending between said impeller and said fluid passage means for isolating the high pressure upstream region in said uid passage means from the low pressure region at the entraining zone of said impeller when said impeller is positioned on said seating means and fluid under pressure is injected in said uid passage means urging said impeller in the seated position.

4. An-ejector type pumping apparatus for raising fluids comprising rst and second elongated tubes joined at the upper and lower ends thereof defining a closed fluid passage means, said first elongated tube having at least one opening disposed in a lower portion thereof, an ejector type impeller having an entraining zone disposed in said first elongated tube and displaceable along a predetermined length thereof, said impeller having at least one inlet port communicating with the entraining zone thereof, said first elongated tube having a shoulder portion on the inside surface thereof providing an annular seat, said annular seat being disposed below said opening in said first elongated tube so that the inlet port in said impeller will register with the opening in said first elongated tube when said impeller is seated on said annular seat, an extension tube connected in alignment with the upper end of said first elongated tube, said eX- tension tube having an opening in the free end thereof and a vcap member threadedly mounted thereon, an inlet tube connected to said first elongate-d tube below said extension tube, a bypass tube interconnecting said inlet tube and said second elongated tube, a discharge tube connected to said second elongated tube between the junction of said bypass tube and said second elongated tube and t-he junction of the upper ends of said elongated tubes, a valve disposed in said inlet tube between the junctions thereof and said bypass tube and said first elongated tube, a valve disposed in said bypass tube, a valve disposed in said first elongated tube below the junction thereof with said inlet tube, and valves disposed in said second elongated tube on either side of the junction thereof with said discharge tube.

5. An ejector type pumping apparatus for raising fluids comprising first and second elongated tubes joined at the upper and lower ends thereof defining a closed fluid passage means, said first elongated tube having at least one opening disposed in a lower portion thereof, a closed jacket member surrounding and secured to a portion of the lower end of said first elongated tube, said closed jacket member defining a suction chamber in communication with the interior of` said first elongated tube by means of said opening in the lower portion of said first elongated tube, said closed jacket member having inlet openings, a one way valve disposed in said suction chamber intermediate said inlet openings in said closed jacket member and said opening in said first elongated tube, an ejector type impeller having an entraining zone disposed in said first elongated tube and displaceablc along a predetermined length thereof, said impeller having at least one inlet port communicating with the entraining zone thereof, said first elongated tube having a shoulder portion on the inside surface thereof providing an annular seat, said annular seat being disposed below said opening in said first elongated tube so that the inlet port in said impeller will register with the opening in said elongated tube when said impeller is seated on said annular seat, an `extension tube connected in alignment with said first elongated tube, said extension tube having an opening in the free end thereof and a cap member threadedly mounted thereon, an inlet tube connected to said first elongated tube below said extension tube, a bypass tube interconnecting said inlet tube and said second elongated tube, a discharge tube connected to said second elongated tube between the junction of said bypass tube and said second elongated tube and the junction of the upper ends of said elongated tubes, a valve disposed in said inlet tube between the junctions thereof and said bypass tube and said first elongated tube, a valve disposed in said bypass tube, a valve disposed in said first elongated tube below the junction thereof with said inlet tube, and valves disposed in said second elongated tube on either side of the junction thereof with said discharge tube.

6. An ejector type pumping apparatus for raising fluids comprising first and second elongated tubes joined at the upper and lower ends thereof defining a closed fluid passage means, said first elongated tube having at least one opening in a lower portion thereof, a closed jacket member surrounding and secured to a portion of the lower end of said first elongated tube, said closed jacket member defining a suction chamber in communication with the interior of said first elongated tube by means of said opening in the lower portion of said first elongated tube, said closed jacket member having inlet openings in a bottom portion thereof, a one way valve disposed in said suction chamber intermediate said inlet openings` in said closed jacket member and said opening in said first elongated tube, an ejector type impeller having an entraining zone disposed in said first elongated tube and displaceable along a predetermined length thereof, said impeller having a diameter slightly less than the inside diameter of said first elongated tube and at least one inlet port communicating with the entraining zone thereof, said first elongated tube having a shoulder portion on the inside surface thereof providing an annular seat, said annular seat being disposed below said opening in said first elongated tube so that the inlet port in said impeller will register with the opening in said elongated tube when said impeller is seated on said annular seat, an extension tube connected in alignment with said first elongated tube, said extension tube having an opening in the free end thereof and a cap member threadedly mounted thereon, an inlet tube connected to said first elongated tube below said extension tube, a bypass tube interconnecting said inlet tube and said second elongated tube, a discharge tube connected to said second elongated tube between the junction of said bypass tube and said second elongated tube and the junction of the upper ends of said elongated tubes, a valve disposed in said inlet tube between the junctions thereof and said bypass tube and said first elongated tube, a valve disposed in said bypass tube, a valve disposed in said first elongated tube below the junction thereof with said inlet tube, valves disposed in said second elongated tube on either side of the junction thereof with said discharge tube and sealing means disposed on said impeller and extending between said impeller and said fluid passage means for isolating the high pressure upstream region in said first elongated tube from the loW pressure region in the entraining zone of said impeller when said impeller is seated on said annular seat in said first elongated tube and fluid under pressure is injected in said first elongated tube urging said impeller in the seated position.

References Cited by the Examiner UNITED STATES PATENTS 2,468,642 4/ 69 Shallenberg 103--260 2,722,895 11/55 De Porter 103-260 X 2,812,723 11/57 Coberly 103-260 LAURENCE V. EFNER, Primary Examiner.

WARREN E. COLEMAN, Examiner.

Claims

1. AN EJECTOR TYPE PUMPING APPARATUS FOR RAISING FLUIDS COMPRISING A FLUID PASSAGE MEANS HAVING AT LEAST ONE OPENING IN A LOWER PORTION THEREOF, A CLOSED JACKET MEMBER SURROUNDING AND SECURED TO A LOWER END OF SAID FLUID PASSAGE MEANS DEFINING A SUCTION CHAMBER COMMUNICATING WITH SAID OPENING IN SAID FLUID PASSAGE MEANS, SAID CLOSED JACKET MEMBER HAVING INTAKE OPENINGS, ONE WAY VALVE MEANS DISPOSED IN SAID SUCTION CHAMBER BETWEEN SAID INTAKE OPENINGS AND SAID OPENING IN SAID FLUID PASSAGE MEANS, AND EJECTOR TYPE IMPELLER HAVING AN ENTRAINING ZONE DISPOSED IN SAID FLUID PASSAGE MEANS AND DISPLACEABLE ALONG A PREDETERMINED LENGTH THEREOF, SAID IMPELLER HAV-ING AT LEAST ONE INLET PORT CCOMMUNICATING WITH THE ENTRAINING ZONE THEREOF, MEANS DISPOSED IN SAID FLUID PASSAGE MEANS AT ONE END OF SAID PREDETERMINED LENGTH FOR SEATING SAID IMPELLER SO THAT THE INLET PORT THEREIN REGISTERS WITH SAID OPENING IN SAID FLUID PASSAGE MEANS AND FLUID MEANS FOR DISPLACING SAID IMPELLER ALONG SAID PREDETERMINED LENGTH OF SAID FLUID PASSAGE MEANS.