NO321183B1 - Pump piston device - Google Patents

Pump piston device Download PDF

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Publication number
NO321183B1
NO321183B1 NO20033447A NO20033447A NO321183B1 NO 321183 B1 NO321183 B1 NO 321183B1 NO 20033447 A NO20033447 A NO 20033447A NO 20033447 A NO20033447 A NO 20033447A NO 321183 B1 NO321183 B1 NO 321183B1
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NO
Norway
Prior art keywords
piston
pump
pressure
liquid
pump piston
Prior art date
Application number
NO20033447A
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Norwegian (no)
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NO20033447L (en
NO20033447D0 (en
Inventor
Per Olav Haughom
Original Assignee
Siv Ing Per Olav Haughom As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siv Ing Per Olav Haughom As filed Critical Siv Ing Per Olav Haughom As
Priority to NO20033447A priority Critical patent/NO321183B1/en
Publication of NO20033447D0 publication Critical patent/NO20033447D0/en
Publication of NO20033447L publication Critical patent/NO20033447L/en
Publication of NO321183B1 publication Critical patent/NO321183B1/en

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  • Reciprocating Pumps (AREA)

Description

ANORDNING VED PUMPESTEMPEL DEVICE AT PUMP PISTON

Foreliggende oppfinnelse vedrører et pumpestempel, særlig av det slaget som benyttes i stempelpumper for pumping av væsker. The present invention relates to a pump piston, particularly of the type used in piston pumps for pumping liquids.

I stempelpumper av kjent utførelse benyttes frem - og tilbakegående stempler med pakninger av gummi eller tilsvarende materiale som tetning mellom væsketrykket og atmosfærisk trykk. In piston pumps of known design, reciprocating pistons with seals of rubber or similar material are used as a seal between the liquid pressure and atmospheric pressure.

Disse pakningene utsettes for stor slitasje, spesielt nær væsken som pumpes inneholde mye forurensning og slitepartikler. These seals are exposed to a lot of wear and tear, especially near the fluid being pumped, which contains a lot of contamination and wear particles.

Ved boring etter olje - og gassforekomster benyttes stempelpumper til å pumpe ned boreslam under høyt trykk. Dette boreslammet inneholder mineralpartikler som gir ekstrem slitasje på stempelpakninger, med derav følgende kostnader. When drilling for oil and gas deposits, piston pumps are used to pump down drilling mud under high pressure. This drilling mud contains mineral particles that cause extreme wear on piston seals, with consequent costs.

I følge oppfinnelsen har en tatt sikte på å komme frem til en stempelutførelse som i vesentlig grad reduserer slitasjen på stempelpakningene. According to the invention, the aim has been to arrive at a piston design which significantly reduces wear on the piston seals.

Dette kan i henhold til oppfinnelsen oppnås ved å utføre stempelet todelt, med to pakninger i serie og slik at det mellom pakningene opprettholdes et væsketrykk med ren væske som til enhver tid er lik eller høyere enn væsketrykket som pumpes. According to the invention, this can be achieved by making the piston in two parts, with two seals in series and so that between the seals a liquid pressure is maintained with pure liquid which is at all times equal to or higher than the liquid pressure being pumped.

Med denne utførelsen vil pakningen mot forurenset væske få tilnærmet likt væsketrykk på begge sider og følgelig reduseres slitasjen vesentlig. With this design, the gasket against contaminated liquid will have approximately the same liquid pressure on both sides and, consequently, wear will be significantly reduced.

Den andre pakningen utsettes for fullt ensidig væsketrykk, men med ikke forurenset væske og får derved vesentlig økt levetid. The other gasket is exposed to full one-sided liquid pressure, but with uncontaminated liquid and thus gets a significantly increased service life.

Fra teknikkens stilling på området er det kjent løsninger der stempelet utføres med to sett pakninger og væskefylt mellomrom som settes under trykk for å redusere slitasjen på pakninger og stempel. From the state of the art in the area, solutions are known where the piston is made with two sets of gaskets and a liquid-filled space that is pressurized to reduce wear on the gaskets and piston.

Patent NO 311 737 Bl beskriver en slik løsning. Patent NO 311 737 Bl describes such a solution.

I denne stempelutførelsen er imidlertid ikke stempelet delt i to deler slik som i foreliggende oppfinnelse. Ved å utføre stempelet to delt kan stempelløsningen lettere bygges inn i eksisterende pumper, fordi trykkoppbyggingen mellom pakningene skjer i selve stempelet. In this piston design, however, the piston is not divided into two parts as in the present invention. By making the piston in two parts, the piston solution can be more easily integrated into existing pumps, because the pressure build-up between the seals takes place in the piston itself.

Patent DE 32 123 325 C2 og EP 694 139 Bl viser teknikkens stilling på området Oppfinnelsen skal nå forklares nærmere med henvisning til et utførelseseksempel vist i fig 1. Patent DE 32 123 325 C2 and EP 694 139 B1 show the state of the art in the area The invention will now be explained in more detail with reference to an embodiment shown in Fig. 1.

På tegningen angir 1 pumpehuset med forurenset væske som skal pumpes . In the drawing, 1 indicates the pump housing with contaminated liquid to be pumped.

Et todelt stempel bestående av en ytre del 3 og en indre del 2 er konsentrisk opplagret og gjennom bolten 11 med gjengeforbindelsen 14 forbundet til en frem - og tilbakegående bevegelse 12. A two-part piston consisting of an outer part 3 and an inner part 2 is concentrically supported and through the bolt 11 with the threaded connection 14 connected to a reciprocating movement 12.

Mellom pakningene 5 og 10 er det ren væske som holder et bestemt minimumstrykk. Dette trykket tilveiebringes av en pumpe 6 over en trykkreduseringsventil 7 . Between the gaskets 5 and 10 is pure liquid which maintains a certain minimum pressure. This pressure is provided by a pump 6 above a pressure reduction valve 7 .

I pumpeslaget vil tilbakeslagsventilen 8 lukke og væsketrykket mellom pakningene 10 og 5 blir like høyt som væsketrykket i mediet som pumpes. Pakning 5 utsettes for likt trykk på begge sider. Pakning 10 utsettes for ensidig væsketrykk lik trykket i det mediet som pumpes.. I sugeslaget etterfylles eventuell lekkasje gjennom tilbakeslagsventilen 8. During the pump stroke, the non-return valve 8 will close and the liquid pressure between the seals 10 and 5 will be as high as the liquid pressure in the medium being pumped. Gasket 5 is subjected to equal pressure on both sides. Gasket 10 is exposed to one-sided liquid pressure equal to the pressure in the medium being pumped. In the suction stroke, any leakage is replenished through the non-return valve 8.

Fjæren 13 og bolten 15 sørger for at ytre del av stempelet 3 alltid holdes i riktig posisjon. The spring 13 and the bolt 15 ensure that the outer part of the piston 3 is always held in the correct position.

4 angir en låse- og tetningsring. 4 indicates a locking and sealing ring.

Claims (1)

Pumpestempel spesielt til bruk i stempelpumper med frem - og tilbakegående stempelbevegelser hvor stempelet utføres med to sett pakninger (5) og (10) og med et mellomrom som holdes fylt med olje, eller tilsvarende væske ved hjelp av en pumpe (6) over en trykkbegrensningsventil (7) og tilbakeslagsventilen (8), karakterisert ved at stempelet er delt i to med en ytre del (3) og en indre del (2). Pumpestempel som beskrevet i patentkrav 1, karakterisert ved at ytre stempeldel (3) og indre stempeldel (2) holdes i aksial posisjon i forhold til hverandre ved hjelp av fjæren (13) og bolten (15).Pump piston especially for use in piston pumps with reciprocating piston movements where the piston is made with two sets of gaskets (5) and (10) and with a space that is kept filled with oil, or similar liquid by means of a pump (6) above a pressure limiting valve (7) and the check valve (8), characterized in that the piston is split in two with an outer part (3) and an inner part (2). Pump piston as described in patent claim 1, characterized in that the outer piston part (3) and inner piston part (2) are held in axial position relative to each other by means of the spring (13) and the bolt (15).
NO20033447A 2003-08-04 2003-08-04 Pump piston device NO321183B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO20033447A NO321183B1 (en) 2003-08-04 2003-08-04 Pump piston device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20033447A NO321183B1 (en) 2003-08-04 2003-08-04 Pump piston device

Publications (3)

Publication Number Publication Date
NO20033447D0 NO20033447D0 (en) 2003-08-04
NO20033447L NO20033447L (en) 2005-02-07
NO321183B1 true NO321183B1 (en) 2006-04-03

Family

ID=28036412

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20033447A NO321183B1 (en) 2003-08-04 2003-08-04 Pump piston device

Country Status (1)

Country Link
NO (1) NO321183B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20091872L (en) * 2009-05-13 2010-11-15 Per Olav Haughom As Device by pump piston

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20091872L (en) * 2009-05-13 2010-11-15 Per Olav Haughom As Device by pump piston
WO2010131976A1 (en) * 2009-05-13 2010-11-18 Per Olav Haughom As Pump piston device

Also Published As

Publication number Publication date
NO20033447L (en) 2005-02-07
NO20033447D0 (en) 2003-08-04

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