Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
  • F04B53/10—Valves; Arrangement of valves
  • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
  • F04B53/123—Flexible valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
  • F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7837—Direct response valves [i.e., check valve type]
  • Y10T137/7838—Plural
  • Y10T137/7839—Dividing and recombining in a single flow path

Definitions

• the present invention relates to a vertical reciprocating pump for the dewatering of liquids present in the soil, according to the preamble to the first claim.
• a vertical reciprocating pump is already known, in particular described in the document OAPI 06 221 of March 23, 1979.
• Such pumps are intended to pump liquids present in the soil such as groundwater, petroleum, etc.
• Known vertical reciprocating pumps, intended for pumping water are moved manually. They are composed, depending on the depth of the layers, either of a rod, or of a string of rods, vertical, carrying one or more piston pistons.
• the known pistons generally consist of a cylinder of a certain length provided at its periphery along one of its edges, in particular of the upper edge, with a sliding seal in the dewatering tube. .
• This cylinder part is slidably engaged on a body, for example formed of fins and terminated at its base by a valve.
• a body for example formed of fins
• the piston cylinder descends on the valve, the piston is tight. Otherwise, the liquid can pass through the piston.
• valve being a wearing part, it gets tired and may require replacement. In this case, you must disassemble the piston assembly to access the valve, remove the valve to be changed and install the new one. valve. For this, you must completely remove the piston from the rod to be able to thread the new valve.
• the object of the present invention is to remedy these drawbacks and proposes to create an alternating pump, of simple and reliable construction, making it possible to pump liquids efficiently even in sheets at very great depths, with a very regular flow rate. even after an extended period of use, which can be easily maintained or replaced if necessary or which prevents the valve of the piston (s) which are above the water level when the pump is stopped, does not clog up with particles possibly in suspension in the water.
• the invention relates to a vertical alternative pump corresponding to the type defined above, according to the main claim.
• the pistons are easily assembled / disassembled on the rod or at the meeting of the elements constituting a rod train of a pump for a significant depth.
• the simplicity of manufacture linked to the small number of simple parts constituting a piston allows the assembly and especially the installation of the pistons by unqualified personnel, under often rudimentary installation conditions. The same is true of maintenance interventions
• the structure of the piston practically avoids any deposit of solid particles and any clogging of the valve of the piston or of the piston itself in its tube, by rinsing the piston during its operation and at the end of a phase of pumping.
• the particular shape of the piston has the advantage of minimizing contact with the interior surface of the dewatering tube.
• the valve is constituted by a lifting membrane which is supported on the support to support the water column, according to an advantageous characteristic for operation.
• the diaphragm forming a valve is cut between its outer edge up to the orifice used for the passage of the rod so as to be able to engage the membrane on the rod without having to thread it thereon.
• the diaphragm in the form of a split disc is very easily placed over the support, by simply loosening one of the two nuts holding the support. This operation is done very quickly and it is by no means born stop removing the support of the rod, that is to say to make tedious unscrewing.
• the membrane can also be formed by several sectors which partially overlap. Such an embodiment offers the advantage of the simplicity of mounting and dismantling; it constitutes a flexible form, allowing the various sectors to be raised partially or relative to one another.
• the piston will have dimensions more or less close to the inner section of the dewatering tube.
• the diaphragm-shaped valve would not resist the water column, so in this case it is made of a rigid material and more particularly the support comprises legs in the form of right triangles joined by one of their side to the upper and auxiliary hub joined over the entire height of the support for for ⁇ mer in the upper part of the support and fixing branches of the valve , - the valve is formed of disc sectors each connected by one of the radial sides to the radial upper part of one leg and the other radial side of the valve rests in the closed position on the radial upper part of the next leg.
• This embodiment has the advantage of allowing a particularly efficient pumping of a very high column of water without this being done to the detriment of the flexibility of the descent of the piston or of its solidity.
• FIG. 1 is a diagrammatic vertical section of a vertical reciprocating pump
• FIG. 2 is a partial schematic vertical section of a piston during the descent of its rod
• FIG. 3 is a schematic vertical section of the piston during the rise of the rod
• FIG. 4 is a view in axial section of the support of the piston along the line IV-IV of FIG. 5,
• - Figure 5 is a top view of the piston support
• - Figure 6 is an exploded view of the piston
• FIG. 7 is a perspective view of another embodiment of a piston
• FIG. 8 is a side view of a support keel according to another embodiment of the invention.
• FIG. 9 is a top view of two support parts in the mounting position
• FIG. 10 is a partial section along IX, showing the complete support assembled on a rod 7.
• FIG. 11 is a perspective view of another embodiment and assembly of a piston, this view being limited to the upper part of the support,
• FIG. 12 is a partial section view of a piston fitted with a skirt
• FIGS. 13A-15B show different embodiments of a piston support
• FIG. 16 shows a complete piston provided with a support according to one of the preceding embodiments.
• the verti ⁇ bilge alternative pump of the invention consists of a base 1 resting on the ground 2.
• a vertical fountain 3 is secured to the base 1; it includes a liquid outlet spout 4 which flows, for example, into a reservoir 5.
• This fon ⁇ taine tube 3 is extended at its lower end by a dewatering tube 6.
• This tube 6 receives a control rod 7 equipped one or more pistons 8 which will be described later.
• the lower end of the dewatering tube 6 is fitted with a foot valve 9.
• the rod 7 which can also be a string of rods, that is to say an assembly of rods fixed one after the other, according to the depth of the ply in which one is pumping, is controlled in reciprocating movement by a mechanism 10 which is only shown very schematically.
• This mechanism 10 is carried by an easel 11.
• the mechanism 10 can be driven either manually, or by an animal, or even by a heat or electric motor and in the latter case, it is possible to envisage an autonomous power supply unit , for example batteries charged by solar cells.
• Figure 2 is a partial axial section of the dewatering tube 6 showing the rod 7 or drill string formed of a rod part 71 connected to a rod part 72 via a threaded sleeve 74; the lower end 73 of the rod 71 is threaded beyond what is necessary for the simple screwing of the sleeve 74 so as to receive the piston 8.
• This piston 8 fixed between a lower nut 12 and a upper nut 13 consists of a disc-shaped support comprising an outer ring 81 connected by spokes 82 to an upper hub 83 crossed by the rod 71 (or its threaded part 73) and an in ⁇ lower hub 84 also crossed by the rod 71; this in ⁇ lower hub 84 supports the support by legs 85 connected to the crown 81.
• the piston 8 comprises a valve formed here by a flexible membrane 87.
• the radial shape of the support allows the passage of the liquid (ascent) in the direction of the arrows A, B, when the piston descends into the liquid column in the dewatering tube 6 as indicated by arrow C.
• FIG. 3 shows the upward movement of the rod 7 (or of the rod elements 71, 72 in the case of a string of rods) identical to that of Figure 2, following an upward movement indicated by arrow D.
• the legs 85 transmit part of the forces applied to the external part of the support towards the lower hub 84.
• the outer ring 81 of the support has a beveled edge or an arron ⁇ di edge, minimizing the contact between the piston 8 and the inner surface of the dewatering tube 6.
• This linear contact according to a circle and not along a cylindrical surface makes it possible to absorb all deviations or differences in alignment, for example in a curve between the rod 7 and the dewatering tube 6, reducing to a minimum the friction forces which oppose the movements ascent.
• the valve 87 is lifted in a flexible manner from the support 81, 82, 83 and allows the liquid to rinse the support, thus avoiding any deposit of solid particles which would affect the tightness of the piston for the ascent movement. .
• the section of the dewatering tube 6 and that of the piston 8 is circular without this shape being limita ⁇ tive and does not exclude a polygonal shape: hexagonal or square, etc.
• Figures 4, 5, 6 show in more detail the structure of a piston as described above.
• Figure 4 shows in section the support with its outer neck 81, a cut arm 82, the collar of the upper hub 83, a cut leg 85 and the other uncut, the intermediate rings 86 as well as the collar of the lower hub 84.
• Half of the membrane 87 is also shown cut, the other half is not shown.
• Figure 5 which is a top view corresponding to Figure 4, shows half of the membrane 87 and the different parts of the support and in particular the spokes 82 the crowns 81, 86 and the upper hub 83 leaving between them the intervals for the passage of the liquid to be pumped.
• FIG. 6 shows these different parts, namely the diaphragm-shaped valve 87, the support and its constituent parts 81, 82, 83, 84, 85, 86.
• the support of the piston is a part produced for example in a single part, for example in molded plasti ⁇ material.
• the valve 87 is preferably made of a material flexible such as synthetic rubber or plastic.
• valve The dimensions of the valve are such that it covers the orifices of the support and arrives near the interior surface of the dewatering tube with an interval at least sufficient to leave a film of liquid along the pa ⁇ king of the tube.
• valve 87 can be a disc-shaped part which is fitted onto the rod 7, according to FIG. 6 it is advantageously split, that is to say that the disk forming the valve 87 is cut along a line 88.
• This cut line can be the junction line of the two edges of the cut of the disc.
• This cut-off line 88 goes from the outer edge 89 to the orifice 90 in the middle of the valve 87 receiving the rod 71 (7).
• edges of the cut line 88 can also overlap as indicated by the dotted line 91.
• This line is in fact the edge of a disc portion coming under the upper edge so that the two edges of the disc overlap on the corner sector included between lines 88 and 91.
• FIG. 7 is an exploded view of an alternative embodiment of the piston which differs from the previous pistons by the particular shape of the valve and the method of fixing it.
• This piston variant is distinguished by the shape of the valve made up of four sectors 92, 93, 94, 95.
• the sector 92 is shown separated from the other sectors shown in the assembled position. These sectors can have the same shapes and the same dimensions and overlap screw in fish scales. It is also possible, as shown in the variant of FIG. 7, to place two sectors 93 and 95 first in a diametrically opposite position, on the support 81-86 then to place the two sectors 92 and 94 on top sectors 93 and 95 thus achieving a slight overlap represented by the dashed lines.
• the sectors 92 and 94 above rise before the sectors 93 and 95.
• the sectors 92 cover the angle greater than 1/4 so that they can overlap as shown.
• the legs 96, 97 and the slot 98 make it possible to place each sector, for example the sector 92, straddling a radial branch 82 and between the inner crown 83 and the directly adjacent intermediate crown 86.
• the first intermediate ring 86 is very close to the upper hub 83, the distance separating these two rings leaving room for the legs 96, 97.
• the upper fixing member is installed, formed of two halves 99A, 99B each terminated by assembly tabs 100, 101
• These two parts 99A, 99B have an internal surface 102, 103 threaded, so that the two parts are joined together constituting the same continuous thread.
• These parts are assembled for example by screws not shown as indicated by the broken lines 104.
• the parts 99A, 99B continue with a half-collar 105, 106; these are full, when the part is assembled, to form a flange pressing the segments 92-95 against the support of the piston 8 previously placed on the rod.
• the valve is in the form of a tulip, fixed near the outer edge of the outer ring 81; the opening of the valve is then around the rod possibly provided with a lining for ⁇ ment a seat for the edge of the valve.
• the edges of the "petals" of the valve on the side of the opening can be joined by a ring engaged on the rod.
• the tulip-shaped valve is constituted by a single membrane of conical shape fixed by its outer edge, the inner edge bordering the orifice, optionally provided with a ring, surrounding the rod; it can also be provided with a part forming the shutter seat against which the edge of the orifice of the valve rests.
• Figures 8 to 10 show another embodiment of a piston support according to the invention.
• This support is formed by two parts 200, 201, for example exactly identical, that is to say corresponding substantially to the support of FIG. 1, cut by a diametral plane (passing through the axis of the rod). These two halves will thus be made from the same mold.
• These two parts 200, 201 are assembled on the rod 7 by a collar type assembly.
• tabs complement the parts to form collars.
• the left part 200 consists of an outer ring 81A connected by spokes 82A to a hub 83A or inner ring. It is in fact both for crown 81A and crown 83A of a half-crown. The same is true of the intermediate half-crowns 86A.
• the “right” part 201 comprises the same elements as the “left” part 200, with the same references in which the suffix A is replaced by the suffix B.
• the half-crown 83A is moreover longer than the thickness of the spokes 82A or of the outer ring 81A so that the tabs 108A, 109A are accessible for the assembly of the two parts 200, 201.
• the lower hub 84A also corresponds to a half-hub extended, on each side, by lugs 110A, 111A intended to be assembled, still in the manner of a collar, with the homologous lugs 110B, 111B of the lower hub 84B of the other part 201 ( Figure 10).
• FIG. 10 also shows the primers of the branches 85A and 85B of the two parts 200, 201.
• the two parts 200, 201 are arranged on either side of the rod 7. It is sufficient to assemble them by the tabs of the upper collars
• This embodiment of the support offers the double advantage of simpler manufacture since the mold only corresponds to half the shape of the support. Being given the symmetry, the same mold can be used to make the parts 200, 201.
• Figure 11 shows the support consisting of two parts 200, 201 similar to the sup ⁇ port shown in Figure 9.
• the legs 85A ... have not been represented.
• These legs are preferably located in planes other than the junction plane of the two halves 200, 201.
• the two parts 200, 201 carry, along the junction plane, ribs 112A, 113B on which a clamp 113, 114. is engaged.
• This method of assembly can in certain cases be more advantageous for bringing the upper part of the support, preferably with a less accessible screw connection.
• the parts 200, 201 can be connected by a screw connection or also a clamp connection like that described here.
• the ribs can be parallel to the axis of the support and slide vertically. To prevent the pins from coming off under the effect of vibrations, they can be locked with a small screw.
• Figure 12 shows an alternative embodiment of the support for example like that of Figure 4.
• This sup ⁇ port is completed at its periphery, by a skirt 115 leaving a gap 116 sufficient relative to the wall of the dewatering tube to avoid any friction, while nevertheless creating a pressure drop zone to slow down the flow of water during pumping.
• this skirt 115 is located under the support and not on the side of the valve 87.
• the support 300 is formed of a tubular hub 384 combining the upper hub and the auxiliary hub of the previous embodiments.
• the legs 385 are constituted by sails of rectangular triangular shape, one side of which is fixed to the hub 384 and the other constitutes a spoke 382 forming a support surface for the valve not shown.
• the number may be different, for example equal to three or five, although an even number is preferable for manufacture because of the plane symmetry that it gives to the support.
• FIG. 13B corresponds to the support form of FIG. 13A except that it is in two symmetrical halves along a plane passing through the axis of the rod. These two halves 301 ′, 302 ′ of the support 300 ′ are assembled by their sails schematically provided with connection orifices 386 ′.
• the variant of support 400 according to FIG. 14A and its embodiment in two symmetrical parts 400 ′ of FIG. 14B correspond essentially to the figures 13A, 13B except that the radial side of the sails 382 is replaced by a surface 482 wider than the thickness of the sails.
• the variant support 500 of FIG. 15A and its embodiment 500 ′ in two symmetrical parts according to FIG. 15B are distinguished from the previous ones by webs 585, 585 ′ of thickness varying from top to bottom.
• the webs 585, 585 ′ form a relatively large bearing surface and of identical size over the entire length. This thickness is reduced towards the bottom.
• the webs 585'A cut by the plane of symmetry have a thickness generally reduced by half.
• the piston consists of a support 600 constituted by one of the supports of FIGS. 13A-15B and of valves 610 in the form of disk sectors, made of a rigid material.
• These valve sectors 610 are articulated by one (611) of their straight sides to the bearing surface 682 of each sail 685 while the other straight side 612 rests freely on the bearing surface 682 of the following sail (the reference numbers chosen by the different valve parts are the same).
• These parts 610 can pivot around the joint on their side 611 and take for example the raised position, shown in FIG. 16, to descend into the liquid (water). During the lifting movement, the valve parts 610 are folded back against the bearing surfaces 682 of the support.
• the lifting movement of the parts 610 can be carried out practically up to the vertical, without exceeding it so that the thrust of the water, during the lifting of the piston, always folds down each part of the valve on the same side.
• the direction of opening of the parts 610 is preferably the same for all the parts of the same piston. However, this direction can be reversed from one piston to the other to avoid inducing a torque in FIG. 7.
• the type of piston according to FIG. 16 is particularly advantageous for descending to great depths to effectively resist significant heights of water column.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Details Of Reciprocating Pumps (AREA)
• Reciprocating Pumps (AREA)

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• 1996
  • 1996-05-03 DE DE69604798T patent/DE69604798T2/de not_active Expired - Fee Related
  • 1996-05-03 AT AT96919862T patent/ATE185879T1/de active
  • 1996-05-03 PT PT96919862T patent/PT823962E/pt unknown
  • 1996-05-03 WO PCT/FR1996/000674 patent/WO1996035055A1/fr not_active Ceased
  • 1996-05-03 ES ES96919862T patent/ES2140865T3/es not_active Expired - Lifetime
  • 1996-05-03 EP EP96919862A patent/EP0823962B1/de not_active Expired - Lifetime
  • 1996-05-03 US US08/945,447 patent/US6164936A/en not_active Expired - Fee Related
  • 1996-05-03 JP JP53308196A patent/JP3921241B2/ja not_active Expired - Lifetime
  • 1996-05-03 CN CN96193731A patent/CN1122757C/zh not_active Expired - Fee Related
  • 1996-05-05 EG EG38796A patent/EG21089A/xx active
  • 1996-05-06 AR AR33641996A patent/AR001865A1/es unknown
  • 1996-05-06 MY MYPI96001705A patent/MY115804A/en unknown
• 2000
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