EP2143955B1 - Drill hole pump - Google Patents
Drill hole pump Download PDFInfo
- Publication number
- EP2143955B1 EP2143955B1 EP08012459.7A EP08012459A EP2143955B1 EP 2143955 B1 EP2143955 B1 EP 2143955B1 EP 08012459 A EP08012459 A EP 08012459A EP 2143955 B1 EP2143955 B1 EP 2143955B1
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- EP
- European Patent Office
- Prior art keywords
- pump
- motor
- component
- side component
- pump according
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 5
- 238000005495 investment casting Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Definitions
- the invention relates to a well pump with the features specified in the preamble of claim 1.
- Borehole pumps of this type are designed to extract water from wells, typically wells. All water-bearing components consist of stainless steel, ie a corrosion-resistant material, the other components are at least hermetically sealed, z. B. by a stainless steel jacket.
- the construction of the pumps is such that in the working position, ie typically when lowered into a substantially vertically extending borehole, the lowest part of the aggregate is an electric drive motor, to which the actual pump connects upwards.
- the pump has a foot part, which serves on the one hand to connect the pump to the motor, on the other hand forms the inlet for the water to be conveyed, and finally together with the upper end disposed head portion for clamping the pump head located between the head and foot serves.
- the pump stages of these known pumps are made of stainless steel sheet.
- the engine is also encapsulated in stainless steel sheet.
- the foot part which used to be manufactured in a costly manner as a sheet steel construction made of stainless steel, is used in the current pumps of the Series SP made of a stainless steel investment casting. Due to the undercuts, the cast components are quite complex, since they have to be produced with lost waxes.
- a comparably elaborate construction is also off WO 99/25055 known.
- the invention has for its object to provide a wellbore pump, which is more cost effective and easier to manufacture, especially in mass production, especially in view of the previously particularly complicated to produce footboard.
- the basic idea of the embodiment of the foot part according to the invention is that, this not as before as a formed in a manufacturing process component, ie z. B. as a sheet-welded component or as a precision casting, but to build the foot of two or more components that are formed in different manufacturing processes, wherein the dividing plane of the components is chosen according to the invention so that it is arranged substantially radially . So almost in a sectional plane transverse to the longitudinal axis of the borehole pump.
- a motor-side component of the foot part is provided, which is produced in a casting process.
- the foot part has a pump-side component, which is produced by the metal injection molding process (metal injection molding), which advantageously has receptacles for fastening means for connection to the head part.
- a pump-side component is used for connection to the head part and for fixing the clamped between the head and foot part pump stages.
- the foot can be made much cheaper than has been the case, and without disadvantages in terms of functionality, in particular the strength and function of the component, namely on the one hand to form a mechanically stable connection with the drive motor, on the other hand to form a mechanically stable connection with the head part and the clamped therebetween pump stages and finally to ensure a suitable suction of the pump with a certain screening function but sufficient flow cross-section.
- the components formed in different manufacturing processes as will be explained in more detail below, be physically separated and joined together in the further manufacturing process, for example cohesively by welding to a one-piece component.
- a motor-side component of the foot part is provided, which is produced in a casting process.
- the or all other components of the foot part are formed in other manufacturing processes.
- the motor-side and produced by a casting method component advantageously receptacles for fastening means for connection to the motor and / or the head part.
- for attachment to the engine recordings are provided, which are formed by contact surfaces are, which essentially have to transmit compressive forces, whereas the rest of the component is also claimed to train.
- a cast component is particularly suitable here. This can be formed with a suitable construction without lost cores and thus also be produced comparatively inexpensively.
- the receptacles advantageously formed in the pump-side component likewise essentially have to transmit compressive forces, whereas the component itself is also at the same time the component which forms the delivery fluid inlet of the pump.
- This component is produced according to the invention in the metal injection molding process (Metal Injection Molding).
- Metal Injection Molding Metal Injection Molding
- a plurality of typically circumferentially arranged inlet openings can be formed, on the one hand form a screening function against coarser particles, on the other hand, however, a sufficiently large intake cross-section.
- the metal powder injection molding process is particularly well suited because on the one hand filigree structures and undercuts can be formed without lost cores, but on the other hand highly durable and high tolerance in terms of tolerance and therefore often can be used without further post-processing components can be produced.
- the motor-side and the pump-side component are joined together by welding, so connected to a one-piece component.
- the motor-side component can be produced as a precision casting component and due to the shaping without lost cores
- the pump-side component is produced by metal powder injection molding, and in this way undercuts can be realized even without lost cores.
- the pump-side component has a cylinder-jacket-shaped component which forms the inlet openings.
- This component then essentially serves to form the inlet openings.
- such a component is inexpensive and efficient to manufacture.
- the cylinder jacket-shaped component may have a flange-like part which is intended to bear against a pump stage.
- the flange-like part is used to create the voltage applied to the foot pump stage and forms the contact surface.
- the foot part is not only made of two components of different manufacturing processes, but formed by two or more physically separate components.
- the cylindrical component can be clamped as a separate component in a form-fitting manner between the motor-side component and the suction side of the first pump stage, without further connections being provided.
- This is preferably done by incorporating a diffuser or a modified diffuser.
- the latter components are available as sheet metal components or preferably as components produced in metal injection molding, they are manufactured inexpensively in stainless steel in a variety, so that further manufacturing costs can be saved when using such a component.
- the shots of the engine-side component, the radial division plane protrude between motor-side component and pump-side component and cover the cylinder jacket-shaped component circumferentially. Then the cylinder jacket-shaped component is not only axially clamped but also radially positively held by the towering component.
- the pump-side component superior receptacles are typically the receptacles for the fasteners of the head part, with which the pump stages are clamped between the head and foot.
- This arrangement has the advantage that the fact that the receptacles for the fastening means over the dividing plane upwards, so are laid out to the pump, the free space in the motor-side component for the receptacles for the fastening means to the engine is larger or the foot more compact, So can be built with comparable lower axial length.
- the motor-side component is designed such that it has a radial intermediate wall having a recess for passing through the motor shaft, via which the motor coming and leading into the pump stages shaft is arranged freely rotatable.
- this radial intermediate wall advantageously has circumferentially at least partially directed towards the motor projections which form the receptacles for the fastening means for connection to the head part.
- These directed to the motor projections serve to hook-shaped ends of flat bands, which typically extend circumferentially from the headboard to the foot, to fix positively and thus define the intermediate pump stages.
- the radial intermediate wall is advantageously provided not only with these projections directed towards the engine, but also with radially concentric with the projections, however, further inwardly lying recesses, in which the free ends of the hook-shaped ends of the bands can engage for connection to the head part.
- the manufacturing tolerances of the hooked ends of the bands can be significantly increased and / or the axial length of the projections can be reduced. This too leads to a more compact construction or to a better accessibility of the fastening means for the drive motor in the foot part.
- the clamping bands 5 tapers in sections, so that the clamping bands 5 are positively secured in the receptacles 6, 7 by corresponding edge side with the clamping bands 5 in contact wedge surfaces.
- suitable other fastening systems can also be used here.
- the foot part 2 based on the Fig. 2 to 5 is shown in detail, has a motor-side member 8, which is provided for contact with the drive motor, not shown, and a pump-side member 9, which is provided for contact with the lowermost pump stage 1.
- the engine-side component 8 has lower seats 10 for attachment of the drive motor.
- the drive motor has four axially parallel frontally upstanding studs, which pass through the lower ring 11 of the motor-side member 8 of the foot part 2 and provided beyond the receptacles 10 with thread and fixed there by means of a nut.
- the ring 11 has a larger outer circumference than the radial partition 13, which thereby upwardly circumferentially formed free space on the outer circumference of the pump is used to guide the electrical connection cable, not shown in the figures, the front side led out of the drive motor and the motor-side component 8 is led out in a corresponding guide groove 15 in one of the legs 12.
- engine-side component 8 is formed as investment casting stainless steel.
- the pump-side member 9 which has a cylinder jacket-shaped portion 16 which is provided with a plurality of inlet openings 17 and the near its upper End has 4 receptacles 7 on the outer circumference, which serve to fix the tension bands 5.
- the cylinder jacket-shaped portion 16 has a retracted inwardly flange 18, on which an axially extending to the pump stage 1 extending collar 19. This collar 19 is provided for positive incorporation into the suction mouth of the lowermost, first pump stage 1.
- This pump-side component 9 is produced in the metal powder injection molding process, so that it requires no further processing after production.
- the components 8 and 9 are at their radial division plane, which is approximately in the region of the top of the radial partition wall 13, joined together and welded together circumferentially, so that there is a one-piece foot part 2, as shown in the Fig. 2 and 4 is shown.
- Fig. 6 illustrated foot part 2a differs from the above essentially by the fact that the motor-side member 8a does not terminate in the dividing plane formed by the top of the intermediate wall 13, but that there are four upwardly projecting, so in the direction of the pump stages 1 projections 20 are provided which essentially follow the outer cross-sectional contour in this area and form the upper receptacles 7 for connection to the tension bands 5.
- the pump-side component 9a likewise has a cylinder-jacket-shaped section 16 which, however, is provided here continuously with inlet openings 17 over the entire circumference and the entire height and is likewise provided on its upper side with a flange 18 and a collar 19.
- the arrangement of the projections 20 is such that in the assembled state of the cylinder jacket-shaped portion 16 comes to rest within the projections 20 and the front side rests on the intermediate wall 13.
- a connection of the components 8a and 9a with each other is not required because due to the in the motor-side component 8a laid recordings 7, which are formed by the projections 20, the pump-side member 9a is held radially in all directions and axially downwardly positively by the motor-side member 8a.
- the further connection then takes place together with the pump stages 1 between the head part 3 and the motor-side component 8a by means of the tension bands 5.
- Fig. 7 to 9 illustrated embodiment corresponds to the foot 2b essentially the basis of the Fig. 1 to 5 described, wherein the legs 12 b are formed shorter than that of the first embodiment.
- the radial intermediate wall 13b In the radial intermediate wall 13b, however, four arranged on a circle with a small distance from the outer circumference recesses 21 are provided, which are formed bent according to the circle and provided for receiving the free ends 22 of clamping bands 5b, which are hook-shaped downwards, respectively engage the free spaces formed by two adjacent legs 12b and come into positive fit in the recesses 21.
- the receptacles for the fastening means with the head part 3 are formed by recesses 21 which are penetrated by the free ends 22 of the hook-shaped ends of the clamping bands 5b.
- the pump-side component 9b is in the embodiment according to the Fig. 7 to 9 formed by two separate components, namely a cylinder jacket-shaped member 16b and by a positively engaging in this cover plate 23, which also has a flange 18 and a collar 19, but also beyond a downwardly directed collar 24, the form-fitting in the assembly position in the cylinder jacket Component 16b engages from above.
- the guide vane 23b of a pump stage 1 can optionally have a correspondingly modified form as a cover disk Use found in the metal powder injection molding.
- the motor-side component 8b is a precision casting component made of stainless steel.
- Fig. 10 to 11 is another attachment variant shown.
- the motor-side component 8c extends from the outer circumference of the radial intermediate wall 13 in each case between legs 12 downwardly toward the drive motor extending projections 25 which are engaged behind by the hook-shaped ends of the clamping bands 5b.
- the free ends 22 can also be incorporated here in recesses 21 of the intermediate wall.
- the cylinder jacket-shaped member 16b and the cover plate 23 and 23b of the above-described embodiment can be used.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
Die Erfindung betrifft eine Bohrlochpumpe mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen.The invention relates to a well pump with the features specified in the preamble of
Bohrlochpumpen dieser Art sind zur Förderung von Wasser aus Erdbohrlöchern, typischerweise Brunnen vorgesehen. Sämtliche wasserführenden Bauteile bestehen dabei aus Edelstahl, also einem korrosionsfesten Material, die übrigen Bauteile sind zumindest hermetisch gekapselt, z. B. durch einen Edelstahlmantel. Der Aufbau der Pumpen ist dergestalt, dass in Arbeitsposition, also typischerweise bei Absenkung in ein im Wesentlichen vertikal verlaufendes Bohrloch der unterste Teil des Aggregats ein elektrischer Antriebsmotor ist, an dem die eigentliche Pumpe nach oben anschließt. Die Pumpe weist ein Fußteil auf, das einerseits zur Verbindung der Pumpe mit dem Motor dient, das andererseits den Einlass für das zu fördernde Wasser bildet, und das schließlich zusammen mit dem am oberen Ende angeordneten Kopfteil zum Einspannen der zwischen Kopf- und Fußteil befindlichen Pumpenstufen dient.Borehole pumps of this type are designed to extract water from wells, typically wells. All water-bearing components consist of stainless steel, ie a corrosion-resistant material, the other components are at least hermetically sealed, z. B. by a stainless steel jacket. The construction of the pumps is such that in the working position, ie typically when lowered into a substantially vertically extending borehole, the lowest part of the aggregate is an electric drive motor, to which the actual pump connects upwards. The pump has a foot part, which serves on the one hand to connect the pump to the motor, on the other hand forms the inlet for the water to be conveyed, and finally together with the upper end disposed head portion for clamping the pump head located between the head and foot serves.
Derartige Pumpen zählen zum Stand der Technik, es wird in diesem Zusammenhang auf die von der Firma Grundfos hergestellten Pumpen der SP-Baureihe verwiesen.Such pumps are state of the art, reference is made in this connection to the pumps manufactured by Grundfos SP series.
Die Pumpenstufen dieser bekannten Pumpen sind aus Edelstahlblech gefertigt. Der Motor ist ebenfalls in Edelstahlblech gekapselt. Das Fußteil, das früher ebenfalls in aufwändiger Weise als Stahlblechkonstruktion aus Edelstahl gefertigt wurde, wird bei den aktuellen Pumpen der Baureihe SP aus einem Edelstahlfeinguss hergestellt. Aufgrund der Hinterschneidungen sind die Gussbauteile recht aufwändig, da sie mit verlorenen Kernen (lost wax) hergestellt werden müssen. Eine vergleichbar aufwändige Konstruktion ist auch aus
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Bohrlochpumpe zu schaffen, die insbesondere in der Serienfertigung kostengünstiger und einfacher herstellbar ist, insbesondere im Hinblick auf das bislang besonders aufwändig zu fertigende Fußteil.Against this background, the invention has for its object to provide a wellbore pump, which is more cost effective and easier to manufacture, especially in mass production, especially in view of the previously particularly complicated to produce footboard.
Diese Aufgabe wird gemäß der Erfindung durch eine Bohrlochpumpe mit den im Anspruch 1 angegebenen Merkmalen erfüllt. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen der nachfolgenden Beschreibung und der Zeichnung.This object is achieved according to the invention by a well pump with the features specified in
Grundgedanke der erfindungsgemäßen Ausgestaltung des Fußteils ist der, dieses nicht wie bisher als ein in einem Herstellungsverfahren gebildetes Bauteil, also z. B. als ein aus Blechen geschweißtes Bauteil oder als ein Feingussteil auszubilden, sondern das Fußteil aus zwei oder mehr Bauteilen aufzubauen, die in unterschiedlichen Herstellungsverfahren gebildet sind, wobei die Teilungsebene der Bauteile gemäß der Erfindung so gewählt ist, dass diese im Wesentlichen radial angeordnet ist, also quasi in einer Schnittebene quer zur Längsachse der Bohrlochpumpe liegt. Gemäß der Erfindung ist ein motorseitiges Bauteil des Fußteils vorgesehen, das in einem Gussverfahren hergestellt wird. Weiterhin weist das Fußteil ein pumpenseitiges Bauteil auf, das im Metallpulverspritzgussverfahren (Metal Injection Moulding) hergestellt ist, das vorteilhaft Aufnahmen für Befestigungsmittel zur Verbindung mit dem Kopfteil hat. Ein solches pumpenseitiges Bauteil dient zur Verbindung mit dem Kopfteil und zur Befestigung der zwischen Kopf- und Fußteil eingespannten Pumpenstufen. Bei einer solchen Ausgestaltung hat sich erstaunlicherweise gezeigt, dass insbesondere in der Serienfertigung das Fußteil wesentlich günstiger hergestellt werden kann als dies bisher der Fall ist, und das ohne Nachteile im Hinblick auf die Funktionalität, insbesondere die Festigkeit und die Funktion des Bauteils, nämlich einerseits eine mechanisch stabile Verbindung mit dem Antriebsmotor zu bilden, andererseits eine mechanisch stabile Verbindung mit dem Kopfteil und den dazwischen eingespannten Pumpenstufen zu bilden und schließlich eine geeignete Ansaugstelle der Pumpe mit einer gewissen Siebfunktion jedoch ausreichendem Strömungsquerschnitt zu gewährleisten.The basic idea of the embodiment of the foot part according to the invention is that, this not as before as a formed in a manufacturing process component, ie z. B. as a sheet-welded component or as a precision casting, but to build the foot of two or more components that are formed in different manufacturing processes, wherein the dividing plane of the components is chosen according to the invention so that it is arranged substantially radially . So almost in a sectional plane transverse to the longitudinal axis of the borehole pump. According to the invention, a motor-side component of the foot part is provided, which is produced in a casting process. Furthermore, the foot part has a pump-side component, which is produced by the metal injection molding process (metal injection molding), which advantageously has receptacles for fastening means for connection to the head part. Such a pump-side component is used for connection to the head part and for fixing the clamped between the head and foot part pump stages. In such an embodiment has surprisingly been found that especially in mass production, the foot can be made much cheaper than has been the case, and without disadvantages in terms of functionality, in particular the strength and function of the component, namely on the one hand to form a mechanically stable connection with the drive motor, on the other hand to form a mechanically stable connection with the head part and the clamped therebetween pump stages and finally to ensure a suitable suction of the pump with a certain screening function but sufficient flow cross-section.
Dabei können gemäß der Erfindung die in unterschiedlichen Herstellungsverfahren gebildeten Bauteile, wie weiter unten noch im Einzelnen ausgeführt sein wird, körperlich getrennt als auch im weiteren Fertigungsverfahren beispielsweise stoffschlüssig durch Schweißen zu einem einstückigen Bauteil zusammengefügt sein.In this case, according to the invention, the components formed in different manufacturing processes, as will be explained in more detail below, be physically separated and joined together in the further manufacturing process, for example cohesively by welding to a one-piece component.
Vorzugsweise ist nur ein motorseitiges Bauteil des Fußteils vorgesehen, das in einem Gussverfahren hergestellt ist. Das oder alle weiteren Bauteile des Fußteils sind in anderen Herstellungsverfahren gebildet. Dabei weist das motorseitige und in einem Gussverfahren hergestellte, Bauteil vorteilhaft Aufnahmen für Befestigungsmittel zur Verbindung mit dem Motor und/oder dem Kopfteil auf. Insbesondere zur Befestigung mit dem Motor sind Aufnahmen vorgesehen, die durch Anlageflächen gebildet sind, welche im Wesentlichen Druckkräfte übertragen müssen, wohingegen das übrige Bauteil auch auf Zug beansprucht ist. Insofern ist hier ein Gussbauteil besonders geeignet. Dies kann bei geeigneter Konstruktion ohne verlorene Kerne gebildet und somit auch vergleichsweise kostengünstig produziert werden.Preferably, only a motor-side component of the foot part is provided, which is produced in a casting process. The or all other components of the foot part are formed in other manufacturing processes. In this case, the motor-side and produced by a casting method, component advantageously receptacles for fastening means for connection to the motor and / or the head part. In particular, for attachment to the engine recordings are provided, which are formed by contact surfaces are, which essentially have to transmit compressive forces, whereas the rest of the component is also claimed to train. In this respect, a cast component is particularly suitable here. This can be formed with a suitable construction without lost cores and thus also be produced comparatively inexpensively.
Die im pumpenseitigen Bauteil vorteilhaft gebildeten Aufnahmen haben ebenfalls im Wesentlichen Druckkräfte zu übertragen wohingegen das Bauteil selbst auch zugleich das Bauteil ist, welches den Förderflüssigkeitseinlass der Pumpe bildet. Dieses Bauteil ist gemäß der Erfindung im Metallpulverspritzgussverfahren (Metal Injection Moulding) hergestellt. In diesem Verfahren können insbesondere auch eine Vielzahl von typischerweise umfangsseitig angeordneten Einlassöffnungen gebildet werden, die einerseits eine Siebfunktion gegenüber gröberen Partikeln bilden, andererseits jedoch einen ausreichend großen Ansaugquerschnitt. Das Metallpulverspritzgussverfahren ist insoweit besonders gut geeignet, da damit einerseits filigrane Strukturen und auch Hinterschneidungen ohne verlorene Kerne gebildet werden können, andererseits jedoch hoch beanspruchbare und hinsichtlich der Toleranz hochpräzise und daher häufig ohne weitere Nachbearbeitung einsetzbare Bauteile hergestellt werden können.The receptacles advantageously formed in the pump-side component likewise essentially have to transmit compressive forces, whereas the component itself is also at the same time the component which forms the delivery fluid inlet of the pump. This component is produced according to the invention in the metal injection molding process (Metal Injection Molding). In this method, a plurality of typically circumferentially arranged inlet openings can be formed, on the one hand form a screening function against coarser particles, on the other hand, however, a sufficiently large intake cross-section. The metal powder injection molding process is particularly well suited because on the one hand filigree structures and undercuts can be formed without lost cores, but on the other hand highly durable and high tolerance in terms of tolerance and therefore often can be used without further post-processing components can be produced.
Gemäß einer vorteilhaften Weiterbildung der Erfindung sind das motor-seitige und das pumpenseitige Bauteil durch Schweißen miteinander verbunden, also zu einem einstückigen Bauteil verbunden. Es kann also beispielsweise das motorseitige Bauteil als Feingussbauteil und aufgrund der Formgebung ohne verlorene Kerne hergestellt werden, wohingegen das pumpenseitige Bauteil im Metallpulverspritzgussverfahren hergestellt wird, und auf diese Weise auch ohne verlorene Kerne Hinterschneidungen realisiert werden können. Nach Verschweißen der Bauteile beispielsweise durch eine umlaufende Schweißnaht umfangseitig entsteht somit ein einstückiges Bauteil, das ohne spanende Bearbeitung eingesetzt werden kann.According to an advantageous embodiment of the invention, the motor-side and the pump-side component are joined together by welding, so connected to a one-piece component. Thus, for example, the motor-side component can be produced as a precision casting component and due to the shaping without lost cores, whereas the pump-side component is produced by metal powder injection molding, and in this way undercuts can be realized even without lost cores. After welding the components, for example by a circumferential weld circumferentially thus creates a one-piece component that can be used without machining.
Um einerseits eine möglichst feingliedrige Siebfunktion, andererseits jedoch einen möglichst großen Ansaugquerschnitt zu realisieren, weist gemäß der Erfindung das pumpenseitige Bauteil ein zylindermantelförmiges Bauteil auf, welches die Einlassöffnungen bildet. Dieses Bauteil dient dann also im Wesentlichen zur Bildung der Einlassöffnungen. Insbesondere in der Serien- und Großserienfertigung ist ein solches Bauteil kostengünstig und effizient herzustellen.In order on the one hand to achieve the finest possible screen function but, on the other hand, the largest possible intake cross-section, according to the invention the pump-side component has a cylinder-jacket-shaped component which forms the inlet openings. This component then essentially serves to form the inlet openings. In particular, in series and mass production, such a component is inexpensive and efficient to manufacture.
Alternativ kann das zylindermantelförmige Bauteil einen flanschartigen Teil aufweisen, der zur Anlage an einer Pumpenstufe bestimmt ist. Der flanschartige Teil dient zur Anlage der am Fußteil anliegenden Pumpenstufe und bildet die Anlagefläche.Alternatively, the cylinder jacket-shaped component may have a flange-like part which is intended to bear against a pump stage. The flange-like part is used to create the voltage applied to the foot pump stage and forms the contact surface.
Gemäß einer Weiterbildung der Erfindung ist das Fußteil nicht nur aus zwei Bauteilen unterschiedlicher Herstellungsverfahren hergestellt, sondern durch zwei oder mehr körperlich voneinander getrennte Bauteile gebildet. So kann gemäß einer vorteilhaften Weitebildung der Erfindung das zylinderförmige Bauteil als gesondertes Bauteil formschlüssig zwischen dem motorseitigen Bauteil und der Saugseite der ersten Pumpenstufe eingespannt sein, ohne dass weitere Verbindungen vorgesehen sind. Vorzugsweise erfolgt dies unter Eingliederung eines Leitapparates oder eines abgewandelten Leitapparates. Letztere Bauteile liegen als Blechbauteile oder bevorzugt als im Metallpulverspritzguss hergestellte Bauteile vor, sie werden in einer Vielzahl kostengünstig in Edelstahl gefertigt, sodass bei Verwendung eines solchen Bauteils weitere Fertigungskosten eingespart werden können.According to one embodiment of the invention, the foot part is not only made of two components of different manufacturing processes, but formed by two or more physically separate components. Thus, according to an advantageous development of the invention, the cylindrical component can be clamped as a separate component in a form-fitting manner between the motor-side component and the suction side of the first pump stage, without further connections being provided. This is preferably done by incorporating a diffuser or a modified diffuser. The latter components are available as sheet metal components or preferably as components produced in metal injection molding, they are manufactured inexpensively in stainless steel in a variety, so that further manufacturing costs can be saved when using such a component.
Letztere Anordnung ist insbesondere dann von Vorteil, wenn gemäß der Erfindung die Aufnahmen des motorseitigen Bauteils die radiale Teilungsebene zwischen motorseitigem Bauteil und pumpenseitigen Bauteil überragen und das zylindermantelförmige Bauteil umfangseitig überdecken. Dann ist das zylindermantelförmige Bauteil nicht nur axial eingespannt sondern auch radial formschlüssig durch das überragende Bauteil gehalten. Bei diesen, das pumpenseitige Bauteil überragenden Aufnahmen handelt es sich typischerweise um die Aufnahmen für die Befestigungsmittel des Kopfteils, mit dem die Pumpenstufen zwischen Kopf- und Fußteil eingespannt werden. Diese Anordnung hat den Vorteil, dass dadurch, dass die Aufnahmen für die Befestigungsmittel über die Teilungsebene nach oben, also zur Pumpe hinaus verlegt werden, der Freiraum im motorseitigen Bauteil für die Aufnahmen für die Befestigungsmittel zum Motor hin größer wird bzw. das Fußteil kompakter, also mit vergleichbarer geringerer axialer Länger gebaut werden kann.The latter arrangement is particularly advantageous if according to the invention, the shots of the engine-side component, the radial division plane protrude between motor-side component and pump-side component and cover the cylinder jacket-shaped component circumferentially. Then the cylinder jacket-shaped component is not only axially clamped but also radially positively held by the towering component. These, the pump-side component superior receptacles are typically the receptacles for the fasteners of the head part, with which the pump stages are clamped between the head and foot. This arrangement has the advantage that the fact that the receptacles for the fastening means over the dividing plane upwards, so are laid out to the pump, the free space in the motor-side component for the receptacles for the fastening means to the engine is larger or the foot more compact, So can be built with comparable lower axial length.
Vorteilhaft ist gemäß einer Weiterbildung der Erfindung das motorseitige Bauteil so ausgestaltet, dass es eine radiale Zwischenwand aufweist, die eine Ausnehmung zum Durchführen der Motorwelle hat, über welche die vom Motor kommende und in die Pumpenstufen führende Welle frei drehbar angeordnet ist. Darüber hinaus weist diese radiale Zwischenwand vorteilhaft umfangseitig zumindest abschnittsweise zum Motor hin gerichtete Vorsprünge auf, welche die Aufnahmen für die Befestigungsmittel zur Verbindung mit dem Kopfteil bilden. Diese zum Motor gerichteten Vorsprünge dienen dazu, hakenförmig auslaufende Enden von flachen Bändern, die typischerweise umfangsseitig vom Kopfteil zum Fußteil verlaufen, formschlüssig zu befestigen und somit die dazwischen liegenden Pumpenstufen festzulegen. Dabei ist die radiale Zwischenwand vorteilhaft nicht nur mit diesen zum Motor gerichteten Vorsprüngen versehen, sondern darüber hinaus mit radial konzentrisch zu den Vorsprüngen jedoch weiter innen liegenden Ausnehmungen, in welcher die freien Enden der hakenförmigen Enden der Bänder zur Verbindung mit dem Kopfteil eingreifen können. Durch diese Ausnehmungen können die Fertigungstoleranzen der hakenförmigen Enden der Bänder deutlich vergrößert werden und/oder die Axiallänge der Vorsprünge verringert werden. Auch dies führt zu einer kompakteren Bauweise bzw. zu einer besseren Zugänglichkeit der Befestigungsmittel für den Antriebsmotor im Fußteil.Advantageously, according to an embodiment of the invention, the motor-side component is designed such that it has a radial intermediate wall having a recess for passing through the motor shaft, via which the motor coming and leading into the pump stages shaft is arranged freely rotatable. In addition, this radial intermediate wall advantageously has circumferentially at least partially directed towards the motor projections which form the receptacles for the fastening means for connection to the head part. These directed to the motor projections serve to hook-shaped ends of flat bands, which typically extend circumferentially from the headboard to the foot, to fix positively and thus define the intermediate pump stages. In this case, the radial intermediate wall is advantageously provided not only with these projections directed towards the engine, but also with radially concentric with the projections, however, further inwardly lying recesses, in which the free ends of the hook-shaped ends of the bands can engage for connection to the head part. Through these recesses The manufacturing tolerances of the hooked ends of the bands can be significantly increased and / or the axial length of the projections can be reduced. This too leads to a more compact construction or to a better accessibility of the fastening means for the drive motor in the foot part.
Die Erfindung ist nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:
- Fig. 1
- in stark vereinfachter perspektivischer Darstellung den pumpenseitigen Teil einer Bohrlochpumpe,
- Fig. 2
- das Fußteil der Pumpe nach
Fig. 1 in vergrößerter Darstellung, - Fig. 3
- in Darstellung nach
Fig. 2 das motorseitige und das pumpenseitige Bauteil vor dem Verbinden, - Fig. 4
- eine Seitenansicht des Fußteils,
- Fig. 5
- eine Schnitt längs der Schnittlinie V-V in
Fig. 4 , - Fig. 6
- in perspektivischer Darstellung ähnlich
Fig. 3 eine andere Ausführungsform des Fußteils, - Fig. 7
- in Explosionsdarstellung eine dritte Ausführungsvariante des Fußteils,
- Fig. 8
- die dritte Ausführungsvariante in zusammengeführter Form in perspektivischer Darstellung,
- Fig. 9
- in perspektivischer Darstellung einen Leitapparat der Pumpe,
- Fig. 10
- eine vierte Ausführungsvariante des Fußteils in Seitenansicht und
- Fig. 11
- die Einzelheit XI aus
Fig. 10 in vergrößerter Darstellung.
- Fig. 1
- in a greatly simplified perspective representation of the pump-side part of a borehole pump,
- Fig. 2
- the foot part of the pump after
Fig. 1 in an enlarged view, - Fig. 3
- in representation after
Fig. 2 the motor-side and the pump-side component before connecting, - Fig. 4
- a side view of the foot part,
- Fig. 5
- a section along the section line VV in
Fig. 4 . - Fig. 6
- similar in perspective
Fig. 3 another embodiment of the foot part, - Fig. 7
- in exploded view, a third embodiment of the foot part,
- Fig. 8
- the third embodiment in a merged form in a perspective view,
- Fig. 9
- in a perspective view of a nozzle of the pump,
- Fig. 10
- a fourth embodiment of the foot in side view and
- Fig. 11
- the detail XI off
Fig. 10 in an enlarged view.
Von der in
Zwischen Kopfteil 3 und Fußteil 2 sind Spannbänder 5 vorgesehen, die in kopfteilseitigen Aufnahmen 6 und fußteilseitigen oberen Aufnahmen 7 festgelegt sind. In der anhand von
Das Fußteil 2, das anhand der
Wie insbesondere die Darstellung nach
Das anhand der
Dieses pumpenseitige Bauteil 9 ist im Metallpulverspritzgussverfahren hergestellt, sodass es keiner weiteren Bearbeitung nach der Herstellung bedarf. Die Bauteile 8 und 9 sind an ihrer radialen Teilungsebene, welche etwa im Bereich der Oberseite der radialen Zwischenwand 13 liegt, zusammengefügt und dort umlaufend miteinander verschweißt, sodass sich ein einstückiges Fußteil 2 ergibt, wie dies in den
Das anhand von
Bei der anhand der
Das pumpenseitige Bauteil 9b ist bei der Ausführungsvariante gemäß den
Anhand der
Claims (10)
- A borehole pump with a head part (3) and with a foot part (2) which consists of stainless steel, between which one or more pump stages (1) are integrated, wherein the foot part (2) is designed for connecting the pump to a drive motor and comprises inlet openings (17) for the fluid to be delivered and consists of at least two components (8, 9) which are separated in one or more radial planes and are formed in different manufacturing methods, wherein a component (8) of the foot part (2) which is at the motor side and which is manufactured in a moulding method is provided, characterised in that a component (9) of the foot part (2) which is at the pump side and which is manufactured with a metal injection moulding method is provided.
- A borehole pump according to claim 1, characterised in that the motor-side component (8) comprises receivers (7, 10) for fastening means for connection to the motor and/or to the head part (3).
- A borehole pump according to one of the preceding claims, characterised in that the pump-side component (9) of the foot part (2) comprises receivers (7) for fastening means for connection to the head part (3).
- A borehole pump according to one of the preceding claims, characterised in that the motor-side and the pump-side component (8 and 9) of the foot part (2) are connected to one another by way of welding.
- A borehole pump according to one of the preceding claims, characterised in that the pump-side component (9) comprises a cylinder-surface-shaped component (16) which forms the inlet openings (17).
- A borehole pump according to one of the preceding claims, characterised in that the cylinder-surface-shaped component (16) comprises a flange-like part (18, 19) which is envisaged for contact on a pump stage (1).
- A borehole pump according to one of the preceding claims, characterised in that the cylinder-surface-shaped component (16b) is positively clamped between the motor-side component (8b) and the suction side of the first pump stage I, preferably amid the integration of a diffuser (23b).
- A borehole pump according to one of the preceding claims, characterised in that the receivers (7) of the motor-side component (8a) project beyond the radial partition plane between the motor-side component (8b) and the pump-side component (9a) and cover the cylinder-surface-shaped component (16) at the periphery.
- A borehole pump according to one of the preceding claims, characterised in that the motor-side component (8a) comprises a radial intermediate wall (13) which comprises a recess (14) for leading through the motor shaft and at the periphery comprises projections (25) which at least in sections are directed to the motor and which form receivers (7) for the fastening means for connection to the head part (3).
- A borehole pump according to one of the preceding claims, characterised in that the radial intermediate wall (13) comprises recesses (21) for receiving the free ends (22) of the hook-like fastening means (5b) for connection to the head part (3).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08012459.7A EP2143955B1 (en) | 2008-07-10 | 2008-07-10 | Drill hole pump |
US12/500,174 US8662867B2 (en) | 2008-07-10 | 2009-07-09 | Bore-hole pump |
CN200910140190.6A CN101624993B (en) | 2008-07-10 | 2009-07-10 | Drill hole pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08012459.7A EP2143955B1 (en) | 2008-07-10 | 2008-07-10 | Drill hole pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2143955A1 EP2143955A1 (en) | 2010-01-13 |
EP2143955B1 true EP2143955B1 (en) | 2017-08-16 |
Family
ID=39916261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08012459.7A Active EP2143955B1 (en) | 2008-07-10 | 2008-07-10 | Drill hole pump |
Country Status (3)
Country | Link |
---|---|
US (1) | US8662867B2 (en) |
EP (1) | EP2143955B1 (en) |
CN (1) | CN101624993B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010040927A1 (en) * | 2010-09-16 | 2012-03-22 | Evac Gmbh | Toilet bowls for use in a vacuum toilet and related manufacturing process |
DE202013101030U1 (en) * | 2013-03-08 | 2013-03-18 | Michael Stefan Armbruster | fastening device |
CN104214127A (en) * | 2014-09-19 | 2014-12-17 | 无锡太博泵业有限公司 | Tightening device for connection of water pump cavities |
CN108302012A (en) * | 2017-01-11 | 2018-07-20 | 惠州市唐群座椅科技股份有限公司 | The connecting structure of air pump and air valve |
EP3670919A1 (en) * | 2018-12-20 | 2020-06-24 | Grundfos Holding A/S | Pump assembly |
US20220412376A1 (en) * | 2021-06-23 | 2022-12-29 | Gustavo Daniel Schraiber | Submersible water pump |
US12071961B1 (en) * | 2023-10-31 | 2024-08-27 | FES Labs, LLC | Water well submersible pump filter |
Family Cites Families (14)
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DE653732C (en) * | 1937-12-01 | Siemens Schuckertwerke Akt Ges | Electrically powered submersible pump set for use in salt water | |
US2667128A (en) * | 1950-12-13 | 1954-01-26 | Dayton Pump & Mfg Company | Submersible pump |
US2722892A (en) * | 1952-07-09 | 1955-11-08 | Morrison Company | Submerged liquid pump |
US2809590A (en) * | 1954-01-29 | 1957-10-15 | Robert J Brown | Electric motor driven pump |
DE1003340B (en) * | 1955-07-15 | 1957-02-28 | Kleinschanzlin Pumpen A G | Device for clamping together submersible motors with the associated pump by means of a central clamping element |
US2939400A (en) * | 1956-05-07 | 1960-06-07 | Smith Corp A O | Submersible motor-pump assembly |
US3267868A (en) * | 1963-11-13 | 1966-08-23 | Barnes Mfg Co | Electric motor with plural cooling paths through the shaft |
US3288074A (en) * | 1964-11-02 | 1966-11-29 | Weber Ind Inc | Submersible pump |
US3438329A (en) * | 1967-06-13 | 1969-04-15 | Fairbanks Morse Inc | Multistage hydraulic pump having improved diffuser means |
US4586880A (en) * | 1983-04-29 | 1986-05-06 | Mitsubishi Denki Kabushiki Kaisha | Submersible motor and pump assembly |
US5628616A (en) * | 1994-12-19 | 1997-05-13 | Camco International Inc. | Downhole pumping system for recovering liquids and gas |
CN2308748Y (en) * | 1997-08-07 | 1999-02-24 | 吴春根 | Underwater pump |
US5923111A (en) * | 1997-11-10 | 1999-07-13 | Goulds Pumps, Incoporated | Modular permanent-magnet electric motor |
US6398521B1 (en) * | 2001-01-30 | 2002-06-04 | Sta-Rite Industries, Inc. | Adapter for motor and fluid pump |
-
2008
- 2008-07-10 EP EP08012459.7A patent/EP2143955B1/en active Active
-
2009
- 2009-07-09 US US12/500,174 patent/US8662867B2/en active Active
- 2009-07-10 CN CN200910140190.6A patent/CN101624993B/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
CN101624993B (en) | 2014-02-12 |
US8662867B2 (en) | 2014-03-04 |
EP2143955A1 (en) | 2010-01-13 |
CN101624993A (en) | 2010-01-13 |
US20100008799A1 (en) | 2010-01-14 |
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