DK172595B1 - Method for internal cleaning of a pipe system in a fluid system and plant for use in the method - Google Patents
Method for internal cleaning of a pipe system in a fluid system and plant for use in the method Download PDFInfo
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- DK172595B1 DK172595B1 DK29997A DK29997A DK172595B1 DK 172595 B1 DK172595 B1 DK 172595B1 DK 29997 A DK29997 A DK 29997A DK 29997 A DK29997 A DK 29997A DK 172595 B1 DK172595 B1 DK 172595B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
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- Fluid-Pressure Circuits (AREA)
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Description
DK 172595 B1 iDK 172595 B1 i
Den foreliggende opfindelse angår en fremgangsmåde til indvendig rensning af et sekundært rørsystem til et fluid, hvilket sekundære rørsystem er i forbindelse med et primært rørsystem, og hvor en første teknisk proces forløber i et fluid i det primære rørsystem samtidig med, at en anden teknisk proces forløber i fluidet i det sekundære S rørsystem, og hvilken fremgangsmåde omfatter, et en turbulent strømning af fluidet i det sekundære rørsystem etableres, og hvor den turbulente strømning omfatter, at et antal pulseringer, der hver forløber over et givet tidsrum, etableres med givne intervaller mellem det enkelte antal pulseringer.The present invention relates to a method for internal cleaning of a secondary pipe system for a fluid, which secondary pipe system is in connection with a primary pipe system, and wherein a first technical process proceeds in a fluid in the primary pipe system, at the same time as a second technical process. a flow in the fluid of the secondary S piping system, which method comprises establishing a turbulent flow of the fluid in the secondary piping system and wherein the turbulent flow comprising a plurality of pulsations each passing over a given period of time being established at given intervals between the individual number of pulses.
10 Den foreliggende opfindelse angår tillige et anlæg til indvendig rensning af et rørsystem i et fluidanlæg ved hjælp af fremgangsmåden ifølge opfindelsen.The present invention also relates to a system for the internal cleaning of a pipe system in a fluid system by the method according to the invention.
Der kendes fremgangsmåder og systemer til indvendig rensning af rørsystemer til flydende medier. Rensning kan finde sted på mange måder, men en måde er at udsætte 1S fluidet for pulsationer, således at der opstår en kraftig turbulent strømning i rørsystemet. Den kraftige turbulente strømning medfører, at urenheder, der har fæstnet sig langs indersiden af rørsystemet, bliver revet løs og skyllet bort af fluidet i rørsystemet.Methods and systems for internal cleaning of liquid media pipe systems are known. Purification can take place in many ways, but one way is to expose the 1S fluid to pulsations so that a strong turbulent flow occurs in the piping system. The powerful turbulent flow causes impurities that have stuck along the inside of the pipe system to be ripped loose and flushed away by the fluid in the pipe system.
Fluidet skal efterfølgende filtreres for urenhederne.The fluid must then be filtered for the impurities.
20 Kendte måder anvender anlæg, der successivt bliver koblet til forskellige steder i rørsystemet således, at hele rørsystemet successivt bliver renset. Det medfører, at fluidet i de dele af rørsystemet, der bliver renset, ikke kan indgå i nogle tekniske processer udover rensningsprocessen. Det er en ulempe, idet det for visse tekniske processer såsom olieudvinding på produktionsplatforme, på landbaserede borerigge eller på raf-25 fmaderier er nødvendigt at afbryde den tekniske proces såsom olieudvinding eller raffinering. Dette er forbundet med væsentlige omkostninger i form af manglende produktion i tidsrummet, hvor rensning finder sted.20 Known ways employ systems that are successively coupled to various locations in the piping system so that the entire piping system is successively cleaned. As a result, the fluid in the parts of the piping system being purified cannot be included in some technical processes other than the purification process. This is a disadvantage, since for certain technical processes such as oil extraction on production platforms, on land drilling rigs or on refinery, it is necessary to interrupt the technical process such as oil extraction or refining. This is associated with significant costs in the form of a lack of production during the period of purification.
WO offentliggørelsesskrift nr. 88/07633 beskriver en anordning, der ikke direkte ved-30 rører rensning af rørsystemer, men som vedrører udskiftning af olie i en hydraulikcylinder. Udskiftning af olien i hydraulikcylinderen finder sted for at tilføre frisk olie, der er afkølet, for dermed at forøge virkningsgraden af hydraulikcylinderen. Udskift- 2 DK 172595 B1 ning af olien sker via en by-pass ventil, gennem hvilken en mængde af frisk olie fra et reservoir bliver tilført, samtidigt med at en mængde af brugt olie bliver ledt bort fra hydraulikcylinderen.WO Publication No. 88/07633 discloses a device which does not directly concern the cleaning of piping systems, but which relates to the replacement of oil in a hydraulic cylinder. Replacement of the oil in the hydraulic cylinder takes place to supply fresh oil that has cooled, thus increasing the efficiency of the hydraulic cylinder. Replacement of the oil is via a by-pass valve through which an amount of fresh oil from a reservoir is supplied, while at the same time an amount of used oil is discharged from the hydraulic cylinder.
5 Denne anordning har kun lighedstræk med den foreliggende opfindelse ved, at der finder en strømning af olie sted i et rørsystem, her en hydraulikcylinder med tilhørende rørsystem. Den tekniske proces, som olien indgår i, består i at etablere en trykopbygning i hydraulikcylinderen og dermed en hydraulisk kraft på et stempel. Dette kan imidlertid ikke lade sig gøre, mens olien i hydraulikcylinderen bliver skiftet, idet der i 10 det pågældende tidsrum er åbnet for by-pass ventilen, og trykopbygning kan ikke finde sted i tilstrækkeligt omfang, når by-pass ventilen er åben. Dette har også kun mindre betydning for anordningen, idet anordningen er bestemt som hydraulikstempel til gravemaskiner, piloteringsmaskiner og andre apparater, der hurtigt kan startes på ny efter, at olien i hydraulikcylinderen er skiftet.This device is similar to the present invention only in that a flow of oil takes place in a piping system, here a hydraulic cylinder with associated piping system. The technical process in which the oil is involved consists in establishing a pressure build-up in the hydraulic cylinder and thus a hydraulic force on a piston. However, this cannot be done while the oil in the hydraulic cylinder is changed, since the by-pass valve is opened for the relevant period and pressure build-up cannot take place sufficiently when the by-pass valve is open. This is also of minor importance to the device, as the device is intended as a hydraulic piston for excavators, piloting machines and other appliances that can be restarted quickly after the oil in the hydraulic cylinder has been changed.
1515
Det er formålet med den foreliggende opfindelse at tilveje en fremgangsmåde og et anlæg til brug ved fremgangsmåden, der er i stand til at foretage indvendig rensning af rørsystem med et fluid, og hvor det ikke er nødvendigt at standse en teknisk proces, : som fluidet indgår i.It is the object of the present invention to provide a method and plant for use in the method capable of conducting internal cleaning of a pipe system with a fluid and where there is no need to stop a technical process involving the fluid in.
2020
Dette formål opnås med en fremgangsmåde, der er særpræget ved, at pulseringeme i fluidet i det sekundære rørsystem etableres samtidigt med, at fluidet i det primære rørsystem indgår i den første tekniske proces.This object is achieved by a method which is characterized in that the pulsations in the fluid in the secondary pipe system are established at the same time as the fluid in the primary pipe system is included in the first technical process.
2S En foretrukket fremgangsmåde er særpræget ved, at den første tekniske proces forløber i et primært rørsystem af f.eks. et olieudvindingsanlæg, at det primære rørsystem omfatter oppumpning og viderepumpning af f.eks. olie fra et oliefelt, og at den turbulente strømning etableres i den første gren og den anden gren af det sekundære rørsystem af olieudvindingsanlægget.2S A preferred method is characterized in that the first technical process proceeds in a primary pipe system of e.g. an oil extraction plant, the primary piping system comprising pumping and further pumping of e.g. oil from an oil field, and that the turbulent flow is established in the first branch and the second branch of the secondary piping system of the oil extraction plant.
30 __________________ ____________________30 __________________ ____________________
Anvendelse af fremgangsmåden ifølge opfindelsen kan f.eks. finde sted i et olieudvindingsanlæg, hvor det primære rørsystem vil bestå af oppumpning og viderepump- 3 DK 172595 B1 ning af olie som den tekniske proces. Det sekundære rørsystem vil være et hydraulisk sikkerhedskredsløb, der omfatter en første gren, som er en trykbærende trykledning, og en anden gren, som er en trykløs returledning. Den første gren og den anden gren er via aktuatorer i forbindelse med, men ikke nødvendigvis forbundet med, det primære 5 rørsystem.Use of the method according to the invention can e.g. take place in an oil extraction plant, where the primary piping system will consist of pumping and further pumping of oil as the technical process. The secondary piping system will be a hydraulic safety circuit comprising a first branch which is a pressure bearing pressure line and a second branch which is a pressureless return line. The first branch and the second branch are via actuators in connection with, but not necessarily connected to, the primary pipe system.
Et anlæg til brug ved fremgangsmåden er bestemt til at blive forbundet til en første gren og en anden gren af et sekundært rørsystem, hvor et fluid i den første gren af det sekundære rørsystem har et tryk PI, og hvor et fluid i den anden gren af det sekundære 10 rørsystem har et tryk, der er mindre end trykket PI, hvilken første gren og anden gren af det sekundære rørsystem via et antal aktuatorer er i forbindelse med et primært rørsystem, hvilket anlæg er særpræget ved, at den første gren og den anden gren i en anden ende er indbyrdes forbundet ved en rørledning, der strækker sig mellem den anden ende af den første gren og den anden gren, at rørledningen omfatter en ventil, og at l S ventilen er bestemt til at åbne og lukke for et gennemløb af fluidet i det sekundære rørsystem gennem rørledningen fra den første gren til den anden gren.A plant for use in the method is intended to be connected to a first branch and a second branch of a secondary piping system, wherein a fluid in the first branch of the secondary piping system has a pressure P1 and wherein a fluid in the second branch of the secondary pipe system has a pressure less than the pressure PI, which first branch and the second branch of the secondary pipe system are connected to a primary pipe system via a plurality of actuators, which is characterized in that the first branch and the second a branch at a second end is interconnected by a pipeline extending between the second end of the first branch and the second branch, the pipeline comprises a valve and the l S valve is intended to open and close a passage of the fluid in the secondary piping system through the pipeline from the first branch to the second branch.
I forbindelse med større anlæg, f.eks. til olieudvinding, er det med fremgangsmåden ifølge opfindelsen muligt at opretholde den tekniske proces, som fluidet i det primære 20 rørsystem indgår i, f.eks. oppumpning og viderepumpning af råolie, samtidigt med at det sekundære rørsystem renses. Det betyder, at driftstop, på grund af behov for rensning af det sekundære rørsystem, undgås.In connection with larger installations, e.g. for oil recovery, it is possible with the method according to the invention to maintain the technical process in which the fluid in the primary pipe system is involved, e.g. pumping and pumping of crude oil while cleaning the secondary pipe system. This means that shutdowns, due to the need for cleaning of the secondary pipe system, are avoided.
Anlægget ifølge opfindelsen udmærker sig blandt andet ved, at det ikke er nødvendigt 25 at foretage omfattende installationsarbejde for at udøve fremgangsmåden ifølge opfindelsen. Ventilen mellem den første gren og den anden gren medfører, at det er muligt at regulere, hvornår fluidet skal ledes fra den anden ende af den første gren til den anden ende af den anden gren.The plant according to the invention is distinguished, inter alia, in that it is not necessary to do extensive installation work to practice the method according to the invention. The valve between the first branch and the second branch makes it possible to control when the fluid is to be directed from the second end of the first branch to the second end of the second branch.
30 Anlægget omfatter i en yderligere foretrukket udførelsesform en første kraftenhed til pumpning af fluidet, hvilken kraftenhed omfatter et udløb, der har forbindelse til den første gren, og et indløb, der har forbindelse til den anden gren, hvilken kraftenhed er 4 DK 172595 B1 bestemt til at etablere trykket PI i den første gren og er særpræget ved, at anlægget yderligere omfatter en anden kraftenhed til pumpning af fluidet, og at den anden kraftenhed har et udløb, der har forbindelse til den første gren og et indløb, der har forbindelse til indløbet for den første kraftenhed.The plant comprises, in a further preferred embodiment, a first power unit for pumping the fluid, which power unit comprises an outlet connecting to the first branch and an inlet connecting to the second branch, the power unit being determined. to establish the pressure PI in the first branch and is characterized in that the plant further comprises a second power unit for pumping the fluid and that the second power unit has an outlet connecting to the first branch and an inlet connecting to the the inlet for the first power unit.
55
Ved at tilvejebringe en yderligere kraftenhed er det muligt at etablere tilstrækkelig turbulent strømning i rørsystemet for at opbygge et tilstrækkeligt højt Reynolds tal til, at rensning af rørsystemet er tilfredsstillende. En ekstra kraftenhed medfører, at det eksisterende anlægs første kraftenhed ikke bliver overbelastet ved rensningen samtidig 10 med, at kapaciteten af den samlede kraft, som den hydrauliske væske bliver udsat for, kan blive forøget.By providing an additional power unit, it is possible to establish sufficient turbulent flow in the piping system to build up a sufficiently high Reynolds number to ensure that the piping system is satisfactory. An additional power unit means that the first power unit of the existing plant is not overloaded at the time of cleaning, at the same time as the capacity of the total force to which the hydraulic fluid is exposed can be increased.
Opfindelsen vil herefter blive beskrevet nærmere under henvisning til den medfølgende tegning, hvor 15 fig. 1 er en skematisk principskitse af en mulig udførelsesform for et anlæg ifølge opfindelsen, fig. 2 er en principskitse af en første udførelsesform for en kontrolenhed til brug i et anlæg ifølge opfindelsen, 20 fig. 3 er en principskitse af en anden udførelsesform for en kontrolenhed til brug i et anlæg ifølge opfindelsen, fig. 4 er en principskitse af en tredje udførelsesform for en kontrolenhed til brug i et anlæg ifølge opfindelsen, og fig. 5 er en graf med en kurve for et teoretisk forløb for et tryk i et rørsystem 25 med et anlæg ifølge opfindelsen.The invention will now be described in more detail with reference to the accompanying drawing, in which: FIG. 1 is a schematic diagram of a possible embodiment of a plant according to the invention; FIG. 2 is a schematic drawing of a first embodiment of a control unit for use in a plant according to the invention; FIG. Figure 3 is a schematic drawing of another embodiment of a control unit for use in a plant according to the invention; 4 is a schematic diagram of a third embodiment of a control unit for use in a plant according to the invention; and FIG. 5 is a graph showing a theoretical course of a pressure in a pipe system 25 with a plant according to the invention.
Fig. 1 er en principskitse af en grundlæggende udførelsesform for et anlæg ifølge opfindelsen. Anlægget er i en foretrukket udførelsesform bestemt til indvendig rensning af rørsystemer på f.eks. et olieudvindingsanlæg, hvilken indvendig rensning bliver 30 benævnt oil-flushing, der medfører strømninger med et Reynolds tal, R, på over 2300 i et fluid i rørsystemet. I det følgende vil som eksempel på et anlæg ifølge opfindelsen 5 DK 172595 B1 blive anvendt et anlæg på et olieudvindingsanlæg og ved processen benævnt oil-flushing.FIG. 1 is a principle sketch of a basic embodiment of a plant according to the invention. The plant is in a preferred embodiment intended for internal cleaning of pipe systems on e.g. an oil extraction plant, which internal cleaning is referred to as oil-flushing, which causes flows with a Reynolds number, R, of more than 2300 in a fluid in the piping system. In the following, as an example of a plant according to the invention, a plant will be used on an oil extraction plant and in the process referred to as oil-flushing.
Fig. 1 viser et anlæg, der omfatter en stationær kraftenhed 1, der er forsynet med et S udløb 2 og et indløb 3. Udløbet har forbindelse til en første ende 4 af en første gren 5 af et sekundært rørsystem. Den første gren 5 af det sekundære rørsystem er i en indledningsvis situation blokeret ved en flange 6. Indløbet 3 har forbindelse til en første ende 7 af en anden gren 8 af rørsystemet. Den anden gren 8 af rørsystemet er i en indledningsvis situation ligeledes blokeret ved en flange 9. Den første gren S og den an-10 den gren 8 af rørsystemet udgør et sekundært rørsystem 10 af olieudvindingsanlægget.FIG. 1 shows a plant comprising a stationary power unit 1 provided with an S outlet 2 and an inlet 3. The outlet is connected to a first end 4 of a first branch 5 of a secondary pipe system. In the initial situation, the first branch 5 of the secondary pipe system is blocked by a flange 6. The inlet 3 is connected to a first end 7 of a second branch 8 of the pipe system. In the initial situation, the second branch 8 of the piping system is also blocked by a flange 9. The first branch S and the second branch 8 of the piping system constitute a secondary piping system 10 of the oil extraction system.
Den første gren S og den anden gren 8 af rørsystemet er forsynet med forgreninger 11, der har forbindelse til et primært rørsystem 12 af olieudvindingsanlægget via aktuato-rer 13.The first branch S and the second branch 8 of the piping system are provided with branches 11 which connect to a primary piping system 12 of the oil extraction plant via actuators 13.
15 Den stationære kraftenhed 1 omfatter en pumpe 14, der bliver drevet af en motor 15.The stationary power unit 1 comprises a pump 14 driven by a motor 15.
Pumpen 14 har et indløb 16, der er i forbindelse med en lagertank 17 for fluidet i det sekundære rørsystem, og et udløb 18, der har forbindelse til udløbet 2 for den stationære kraftenhed 1. Mellem udløbet 18 for pumpen 14 og udløbet 2 for den stationære kraftenhed 1 er monteret en kontraventil 19 og et filter 38. Mellem udløbet 18 for 20 pumpen 14 og kontraventilen 19 er i en sidegren 20 mellem udløbet 18 og lagertanken 17 monteret en overløbsventil 21. En trykakkumulator 22, der i den viste udførelses-form er en blæreakkumulator eller en stempelakkumulator, er forbundet mellem kontraventilen 19 og udløbet 2 for den stationære kraftenhed 1. En pressostat 23 er ligeledes forbundet mellem kontraventilen 19 og udløbet 2 for den stationære kraftenhed 1.The pump 14 has an inlet 16 which is in communication with a storage tank 17 for the fluid in the secondary pipe system, and an outlet 18 which connects to the outlet 2 for the stationary power unit 1. Between the outlet 18 for the pump 14 and the outlet 2 for the stationary power unit 1 is fitted with a check valve 19 and a filter 38. Between an outlet 18 for the pump 14 and the check valve 19, an overflow valve 21 is mounted in a side branch 20 between the outlet 18 and the storage tank 17, a pressure accumulator 22 which, in the embodiment shown. is a bladder accumulator or a piston accumulator, is connected between the check valve 19 and the outlet 2 for the stationary power unit 1. A pressure switch 23 is also connected between the check valve 19 and the outlet 2 for the stationary power unit 1.
25 Pressostaten 23_er bestemLtii at regulere trykket i den første gren 5 af det sekundære rørsystem 10 mellem et maksimalt drifttryk P(max.) og et minimalt drifttryk P(min.).The pressure switch 23_ is determined to regulate the pressure in the first branch 5 of the secondary pipe system 10 between a maximum operating pressure P (max.) And a minimum operating pressure P (min.).
Indløbet 3 for kraftenheden 1 har forbindelse til lagertanken 17. Mellem indløbet 3 for kraftenheden 1 og lagertanken 17 er monteret et filter 24. Den stationære kraftenhed 1 er bestemt til at fastholde et givet drifttryk i den første gren 5 af det sekundære rørsy-30 stem 10. Den anden gren 8 af det sekundære rørsystem 10 er trykløs.The inlet 3 of the power unit 1 is connected to the storage tank 17. Between the inlet 3 of the power unit 1 and the storage tank 17 is mounted a filter 24. The stationary power unit 1 is intended to maintain a given operating pressure in the first branch 5 of the secondary pipe system 30 10. The second branch 8 of the secondary pipe system 10 is pressureless.
6 DK 172595 B16 DK 172595 B1
Det ovenfor beskrevne udgør en kendt sekundær kreds 10 til et olieudvindingsanlæg.The above described constitutes a known secondary circuit 10 for an oil extraction plant.
Anlægget ifølge opfindelsen er desuden forsynet med en rørledning 26, der er koblet til flangerne 6,9, og som er i stand til at etablere forbindelse for fluidet i det sekundære rørsystem 10 mellem en anden ende 25 af den første gren 5 og en anden ende 27 af 5 den anden gren 8.1 rørforbindelsen 26 mellem den anden ende 25,27 af henholdsvis den første gren 5 og den anden gren 8 er monteret et filter 28 og en automatisk ventil 29. Den automatiske ventil 29 bliver styret af en kontrolenhed 30 (se fig. 2-4).The system according to the invention is further provided with a conduit 26 which is coupled to the flanges 6,9 and which is capable of establishing connection for the fluid in the secondary pipe system 10 between a second end 25 of the first branch 5 and a second end. 27 of 5 the second branch 8.1 The pipe connection 26 between the second end 25,27 of the first branch 5 and the second branch 8, respectively, is mounted a filter 28 and an automatic valve 29. The automatic valve 29 is controlled by a control unit 30 (see Figures 2-4).
Anlægget ifølge opfindelsen er endvidere i en foretrukket udførelsesform, som illu-10 streret, forsynet med en yderligere kraftenhed 31, der er koblet til den første gren 5 parallelt med den stationære kraftenhed 1. Den yderligere kraftenhed 31 omfatter ligeledes en pumpe 32, der bliver drevet af en motor 33. Pumpen 32 har et udløb 34, der ligeledes er i forbindelse med den første gren 5 af det sekundære rørsystem 10. Mellem pumpen 32 og det sekundære rørsystem 10 er ligeledes monteret en kontraventil 15 35 og et filter 39. En akkumulator 36 er koblet til udløbet 34 for pumpen mellem filte ret 39 og kontraventilen 35. Pumpen 32 har et indløb 37, der ligeledes har forbindelse til lagertanken 17. Den yderligere kraftenhed 31 er tilsluttet parallelt med den stationære kraftenhed for at kunne etablere tilstrækkelige strømningshastigheder i det sekundære rørsystem 10 ved rensning af rørsystemet.Further, in a preferred embodiment, as illustrated, the system of the invention is provided with an additional power unit 31 coupled to the first branch 5 parallel to the stationary power unit 1. The additional power unit 31 also comprises a pump 32 which becomes driven by a motor 33. The pump 32 has an outlet 34 which is also connected to the first branch 5 of the secondary pipe system 10. Between the pump 32 and the secondary pipe system 10 is also fitted a check valve 15 35 and a filter 39. accumulator 36 is coupled to the outlet 34 of the pump between felt right 39 and the check valve 35. The pump 32 has an inlet 37 which is also connected to the storage tank 17. The additional power unit 31 is connected in parallel with the stationary power unit to establish sufficient flow rates in the the secondary pipe system 10 when cleaning the pipe system.
20 Når rørsystemet skal renses, finder dette sted ved en fremgangsmåde ifølge opfindelsen. Rensning finder sted ved, at den automatiske ventil 29 Åbnes på et givet tidspunkt og indenfor en given periode. På hvilket tidspunkt ventilen åbnes, og indenfor hvilken periode ventilen åbnes, bliver fastlagt af empiriske data for det pågældende rørsystem, 25 af fluidet i rørsystemet, og af kravet til rensning af rørsystemet.When the pipe system is to be cleaned, this takes place by a method according to the invention. Cleaning takes place by opening the automatic valve 29 at a given time and within a given period. The time at which the valve is opened and the period during which the valve is opened is determined by empirical data for the relevant pipe system, 25 of the fluid in the pipe system, and the requirement for cleaning the pipe system.
Forinden der foretages oil-flushing, opbygges et givet tryk PI i den første gren 5. Når trykket har nået en empirisk fastlagt øvre værdi P3, fastholdes trykket en periode for at sikre, at der ikke finder trykfald sted i det sekundære rørsystem 10 som følge af, at 30 aktuatorerne 13 arbejder. Når det er sikret, at trykket P3 i den første gren 5 fastholdes, åbnes den automatiske ventil 29. Fluidet i det sekundære rørsystem 10, der i det konkrete tilfælde er olie, strømmer derpå fra den anden ende 25 af den første gren 5 til den 7 DK 172595 B1 anden ende 27 af den anden gren 8 gennem filteret 28 og gennem den automatiske ventil 29.Prior to oil flushing, a given pressure PI is built up in the first branch 5. When the pressure has reached an empirically determined upper value P3, the pressure is maintained for a period to ensure that no pressure drop occurs in the secondary pipe system 10 as a result. of the 30 actuators 13 working. When it is ensured that the pressure P3 in the first branch 5 is maintained, the automatic valve 29. The fluid in the secondary pipe system 10, which in the specific case is oil, is then flowed from the second end 25 of the first branch 5 to the 7 end 17 of the second branch 8 through the filter 28 and through the automatic valve 29.
Når den automatiske ventil 29 åbnes, opbygges en kraftig strømning i den første gren S S og den anden gren 8. Den kraftige strømning medfører, at der opstår turbulent strømning af fluidet i den første gren S og den anden gren 8 med Reynolds tal R på over 2300, fortrinsvis over 3000. Den turbulente strømning medfører, at urenheder i rørsystemet rives løs og rives med af fluidet. Når trykket i den første gren 5 falder til en empirisk fastlagt nedre værdi P2, lukkes den automatiske ventil 29. Derpå finder ny 10 trykopbygning sted i den første gren 5, hvorefter processen gentages. Opbygning af tryk til den øvre værdi for trykket P3 i den første gren S finder sted ved hjælp af både den stationære kraftenhed 1 og den yderligere kraftenhed 31.When the automatic valve 29 is opened, a strong flow builds up in the first branch SS and the second branch 8. The high flow causes turbulent flow of the fluid in the first branch S and the second branch 8 with Reynolds number R of above 2300, preferably above 3000. The turbulent flow causes the impurities in the piping to be peeled off and ripped off by the fluid. When the pressure in the first branch 5 drops to an empirically determined lower value P2, the automatic valve 29. Then the new pressure build-up takes place in the first branch 5, after which the process is repeated. The build-up of pressure to the upper value of the pressure P3 in the first branch S takes place by means of both the stationary force unit 1 and the additional force unit 31.
Fig. 2 viser en første udførelscsfoim for en kontrolenhed 30 til den automatiske ventil 15 29 (se fig. 1). En første del 40 af kontrolenheden omfatter en omformer til konverte ring af et signal 41 fra et manometer (ikke vist) i den første gren 5 til et signal 42 til en mikroprocessor 43. Mikroprocessoren 43 indeholder empiriske eller indlæste data for varighed af den periode, som den automatiske ventil 29 skal være åben, og for varighed af perioden mellem de perioder, hvor den automatiske ventil 29 er åben. Data kan 20 indlæses ved hjælp af et kontrolpanel 44 med kontrolknapper 45 og kontroldisplay 46.FIG. 2 shows a first embodiment foam for a control unit 30 for the automatic valve 15 29 (see Fig. 1). A first portion 40 of the control unit comprises a converter for converting a signal 41 from a manometer (not shown) in the first branch 5 to a signal 42 to a microprocessor 43. The microprocessor 43 contains empirical or input data for the duration of the period. that the automatic valve 29 must be open and for the duration of the period between the periods when the automatic valve 29 is open. Data can be entered by means of a control panel 44 with control buttons 45 and control display 46.
Den første del 40 af kontrolenheden omfatter ligeledes en styreenhed 47 til på baggrund af et styresignal 48 fra mikroprocessoren 43 at foretage styring af en aktuator 49 ved hjælp af et styresignal 50.The first part 40 of the control unit also comprises a control unit 47 for controlling an actuator 49 by means of a control signal 50 on the basis of a control signal 48 from the microprocessor 43.
25 Aktuatoren 49 omfatter i den viste udførelsesform en første pneumatisk ventil 51 og en anden pneumatisk ventil 52. Den første pneumatiske ventil 51 og den anden pneumatiske ventil 52 er koblet parallelt. Aktuatoren 49 omfatter ligeledes en pneumatisk cylinder 53 med stempel 54 og en mekanisk skruefjeder 58. En kilde 55 til forsyning af luft til den pneumatiske cylinder 54 er tilsluttet aktuatoren.The actuator 49 comprises, in the embodiment shown, a first pneumatic valve 51 and a second pneumatic valve 52. The first pneumatic valve 51 and the second pneumatic valve 52 are connected in parallel. The actuator 49 also comprises a pneumatic cylinder 53 with piston 54 and a mechanical coil spring 58. A source 55 for supplying air to the pneumatic cylinder 54 is connected to the actuator.
3030
Manometeret (ikke vist) giver signal 41 til omformeren om et aktuelt tryk PI i den første gren 5. Omformeren er forsynet med en stabilisator 56, der registrerer, hvorvidt 8 DK 172595 B1 det aktuelle tryk PI fastholdes i tilstrækkelig lang tid og dermed er stabilt. Omformeren giver herefter signal 42 til mikroprocessoren 43 om, at et aktuelt tryk PI er nået i den første gren, og at trykket PI er stabilt. Mikroprocessoren 43 fastlægger herefter, om det aktuelle tryk PI svarer til et givet øvre drifttryk P3. Såfremt dette er tilfældet, 5 giver mikroprocessoren 43 herefter signal 48 til styreenheden 47 om at foretage åbning af den automatiske ventil 29. Styreenheden 47 giver herefter signal 50 til de pneumatiske ventiler 51,52 om at lede luft fra luftforsyningen 55 til den pneumatiske cylinder 53. Herefter åbnes de pneumatiske ventiler 51,52 og luft bliver ledt fra luftforsyningen 55 til den pneumatiske cylinder 53. Herefter aktiverer den pneumatiske 10 cylinder 53 stemplet 54 i den pneiunatiske cylinder 53 ved, at stemplet 54 forskydes fremefter i den pneumatiske cylinder 53, hvorefter stemplet 54 aktiverer den automatiske ventil 29. Fluidet i det sekundære rørsystem 10 (se fig. 1) strømmer herefter med stor hastighed fra den anden ende 25 af den første gren 5 til den anden ende 27 af en anden gren 7 gennem rørledningen 26.The manometer (not shown) gives signal 41 to the inverter of a current pressure PI in the first branch 5. The inverter is provided with a stabilizer 56 which detects whether the current pressure PI is maintained for a sufficiently long time and thus is stable. . The inverter then gives signal 42 to the microprocessor 43 that a current pressure P1 is reached in the first branch and that the pressure PI is stable. The microprocessor 43 then determines whether the current pressure PI corresponds to a given upper operating pressure P3. If this is the case, then microprocessor 43 then gives signal 48 to controller 47 to open automatic valve 29. Controller 47 then signals 50 to pneumatic valves 51,52 to direct air from air supply 55 to pneumatic cylinder 53 Thereafter, the pneumatic valves 51,52 are opened and air is directed from the air supply 55 to the pneumatic cylinder 53. Thereafter, the pneumatic cylinder 53 activates the plunger 54 of the pneumatic cylinder 53 by moving the plunger 54 forward in the pneumatic cylinder 53, after which the plunger 54 activates the automatic valve 29. The fluid in the secondary pipe system 10 (see Fig. 1) then flows at great speed from the second end 25 of the first branch 5 to the second end 27 of a second branch 7 through the pipeline 26.
1515
Manometeret giver kontinuert signal 41 til omformeren om det aktuelle tryk PI. Omformeren giver kontinuert signal 42 videre til mikroprocessoren 43 om det aktuelle tryk PI. Mikroprocessoren 43 fastlægger, om det aktuelle tryk PI svarer til et givet nedre drifttryk P2. Såfremt dette er tilfældet, giver mikroprocessoren 43 herefter sig-20 nal 48 til styreenheden 47 om at foretage lukning af den automatiske ventil 29. Styreenheden 47 giver herefter signal 50 til de pneumatiske ventiler 51,52 om et lede luft fra den pneumatiske cylinder 53 til en udstødning 57 for luft. Herefter lukkes de pneumatiske ventiler 51,52 og luft bliver ledt fra den pneumatiske cylinder 53 til luftudstødningen 57. Herefter de-aktiverer den pneumatiske cylinder 53 stemplet 54 i den 25 pneumatiske cylinder 53, hvorefter stemplet 54 de-aktiverer den automatiske ventil 29 ved, at en mekaniske fjeder 58 forskyder stemplet 54 tilbage i den pneumatiske cylinder 53. Strømningen af fluidet i det sekundære rørsystem 10 standses herefter fra den anden ende 25 af den første gren 5 til den anden ende 27 af den anden gren 7 gennem rørledningen 26. Ny trykopbygning finder herefter sted i den første gren 5, og proces-30 sen gentages.The manometer provides continuous signal 41 to the inverter of the current pressure PI. The inverter transmits continuous signal 42 to the microprocessor 43 about the current pressure P1. The microprocessor 43 determines whether the current pressure P1 corresponds to a given lower operating pressure P2. If so, the microprocessor 43 then signals 48 to the control unit 47 to close the automatic valve 29. The control unit 47 then provides signal 50 to the pneumatic valves 51,52 for conducting air from the pneumatic cylinder 53 to an exhaust 57 for air. Thereafter, the pneumatic valves 51.52 are closed and air is directed from the pneumatic cylinder 53 to the air exhaust 57. Thereafter, the pneumatic cylinder 53 deactivates the plunger 54 of the 25 pneumatic cylinder 53, and then the plunger 54 deactivates the automatic valve 29 by a mechanical spring 58 displaces the piston 54 back into the pneumatic cylinder 53. The flow of the fluid in the secondary pipe system 10 is then stopped from the second end 25 of the first branch 5 to the second end 27 of the second branch 7 through the pipeline 26. New pressure build-up then takes place in the first branch 5 and the process is repeated.
9 DK 172595 B19 DK 172595 B1
Pig. 3 viser en alternativ kontrolenhed til et anlæg ifølge opfindelsen. Kontrolenheden i fig. 3 adskiller sig blandt andet ved, at den første pneumatiske ventil S1 og den anden pneumatiske ventil 52 er koblet i serie i stedet for parallelt som i fig. 2, og at kapaciteten er højere. Funktionen af kontrolenheden i fig. 3 er den samme som funktionen af 5 kontrolenheden i fig. 2.Pig. 3 shows an alternative control unit for a system according to the invention. The control unit of FIG. 3 differs, inter alia, in that the first pneumatic valve S1 and the second pneumatic valve 52 are connected in series rather than in parallel as in FIG. 2 and that the capacity is higher. The operation of the control unit of FIG. 3 is the same as the function of the control unit of FIG. 2nd
Fig. 4 viser en yderligere alternativ udførelsesform for en kontrolenhed til et anlæg ifølge opfindelsen. Kontrolenheden i fig. 4 adskiller sig fra kontrolenheden i fig. 2 og kontrolenheden i fig. 3 ved, at de-aktivering af stemplet 54 i den pneumatiske cylinder 10 53 og dermed de-aktivering af den automatiske ventil 29 finder sted ved et pneumatisk tryk fra luftforsyningen 55 i stedet for en mekanisk kraft fra en mekanisk skruefjeder.FIG. 4 shows a further alternative embodiment of a control unit for a system according to the invention. The control unit of FIG. 4 differs from the control unit of FIG. 2 and the control unit of FIG. 3 in that the deactivation of the piston 54 in the pneumatic cylinder 10 53 and thus the deactivation of the automatic valve 29 takes place at a pneumatic pressure from the air supply 55 instead of a mechanical force from a mechanical screw spring.
Funktionen af kontrolenheden i fig. 4 er den samme som funktionen af kontrolenheden i henholdsvis fig. 2 og fig. 3, bortset fra de-aktivering af den automatiske ventil som nævnt ovenfor.The operation of the control unit of FIG. 4 is the same as the function of the control unit of FIG. 2 and FIG. 3, except for the deactivation of the automatic valve as mentioned above.
1515
Fig. 5 er en graf med en kurve over et teoretisk forløb for et tryk i den første gren 5 i forbindelse med rensning ved fremgangsmåden ifølge opfindelsen. Kurven forløber mellem et nedre drifttryk P2 og øvre drifttryk P3 i den første gren 5 (se fig. 1). Den anden gren 8 (se fig. 1) er trykløs, og et forløb for tryk i den anden gren 8 er ikke vist.FIG. 5 is a graph with a graph of a theoretical course of a pressure in the first branch 5 in connection with purification by the method according to the invention. The curve extends between a lower operating pressure P2 and upper operating pressure P3 in the first branch 5 (see Fig. 1). The second branch 8 (see Fig. 1) is non-pressurized and a pattern of pressure in the second branch 8 is not shown.
20 Over en periode ti opbygges fra det nedre drifttryk P2 ved hjælp af den stationære kraftenhed 1 (se fig. 1), og alternativt ligeledes den yderligere kraftenhed 31, et tryk PI op til det øvre drifttryk P3. Trykopbygningen fastholdes herefter i en periode t2 for at lokalisere, hvorvidt trykket PI ved det øvre drifttryk P3 er stabilt. Såfremt dette er tilfældet, som illustreret, åbnes den automatiske ventil 29, og trykket falder fra det 25 øvre drifttryk P3 mod det nedre drifttryk P2 over en periode t3. Herefter lukkes den automatiske ventil 29, og trykket P2 fastholdes i en periode t4. Herefter gentages fremgangsmåden.Over a period of ten, from the lower operating pressure P2 is built up by the stationary force unit 1 (see Fig. 1), and alternatively the additional force unit 31, a pressure PI up to the upper operating pressure P3 is also built up. The pressure buildup is then maintained for a period t2 to locate whether the pressure P1 at the upper operating pressure P3 is stable. If this is the case, as illustrated, the automatic valve 29 is opened and the pressure drops from the upper operating pressure P3 to the lower operating pressure P2 over a period t3. The automatic valve 29 is then closed and the pressure P2 is maintained for a period t4. The procedure is then repeated.
Over en periode t5 opbygges igen et tryk PI fta det nedre drifttryk P2 til det øvre 30 drifttryk P3. Igen fastholdes trykopbygningen i en periode t6 for at lokalisere, hvorvidt trykket PI ved det øvre drifttryk P3 er stabilt. Såfremt dette ikke er tilfældet, illustreret ved et trykfald i perioden t6, genopbygges trykket PI over en periode t7 til det øvre 10 DK 172595 B1 drifttryk P3. Igen fastholdes trykopbygningen i en periode t8 for at lokalisere, hvorvidt trykket PI ved det øvie drifttryk P3 er stabilt. Såfremt dette nu er tilfældet, illustreret ved konstant tryk i perioden t8, åbnes den automatiske ventil 29, og trykket falder fra det øvre drifttryk P3 mod det nedre drifttryk P2 over en periode t9. Herefter lukkes 5 den automatiske ventil 29, og trykket P2 fastholdes i en periode tlO. Herefter gentages fremgangsmåden.Over a period t5, a pressure P1 is again built up from the lower operating pressure P2 to the upper operating pressure P3. Again, the pressure buildup is maintained for a period t6 to locate whether the pressure P1 at the upper operating pressure P3 is stable. If this is not the case, illustrated by a pressure drop in the period t6, the pressure P1 is restored over a period t7 to the upper operating pressure P3. Again, the pressure build-up is maintained for a period t8 to locate whether the pressure P1 at the upper operating pressure P3 is stable. If this is now the case, illustrated at constant pressure during the period t8, the automatic valve 29 is opened and the pressure drops from the upper operating pressure P3 towards the lower operating pressure P2 over a period t9. Thereafter, the automatic valve 29 is closed and the pressure P2 is maintained for a period t10. The procedure is then repeated.
Opfindelsen er i det foregående beskrevet under henvisning til dels skematiske figurer og dels til specifikke opbygninger af udførelsesformer for kontrolenheder til anlæg 10 ifølge opfindelsen. Det vil være muligt at opbygge kontrolenheder på andre måder end de viste. Det vil også være muligt at udelade dele af anlægget ifølge opfindelsen såsom den yderligere kraftenhed eller filteret i den yderligere rørledning.The invention is described above with reference to partly schematic figures and partly to specific designs of embodiments of control units for systems 10 according to the invention. It will be possible to build control units in ways other than those shown. It will also be possible to omit parts of the system according to the invention such as the additional power unit or the filter in the additional pipeline.
Claims (10)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK29997A DK172595B1 (en) | 1997-03-18 | 1997-03-18 | Method for internal cleaning of a pipe system in a fluid system and plant for use in the method |
| NO19981081A NO312883B1 (en) | 1997-03-18 | 1998-03-11 | Method for internal cleaning of a pipe system in a fluid system and plant for use in the method |
| GB9805804A GB2323421B (en) | 1997-03-18 | 1998-03-18 | A method for internal cleaning of a piping system in a fluid plant and plant for the use of the method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK29997 | 1997-03-18 | ||
| DK29997A DK172595B1 (en) | 1997-03-18 | 1997-03-18 | Method for internal cleaning of a pipe system in a fluid system and plant for use in the method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK29997A DK29997A (en) | 1998-09-19 |
| DK172595B1 true DK172595B1 (en) | 1999-02-08 |
Family
ID=8091985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK29997A DK172595B1 (en) | 1997-03-18 | 1997-03-18 | Method for internal cleaning of a pipe system in a fluid system and plant for use in the method |
Country Status (3)
| Country | Link |
|---|---|
| DK (1) | DK172595B1 (en) |
| GB (1) | GB2323421B (en) |
| NO (1) | NO312883B1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2837729B1 (en) * | 2002-03-26 | 2005-01-14 | Hydraulique Production Systems | METHOD AND APPARATUS FOR DEPOLLUTING THE HYDRAULIC CIRCUITS OF A MOLD |
| NO336448B1 (en) * | 2010-07-20 | 2015-08-24 | Mera As | Method and apparatus for treating fluid in a hydraulic power compensation plant |
| CN103084362B (en) * | 2011-11-02 | 2016-04-27 | 王广瑞 | hydraulic shock wave pipeline cleaner |
| CN102764748B (en) * | 2012-07-27 | 2015-01-07 | 中国一冶集团有限公司 | Method for washing hydraulic lubricating system |
| DE102012222568A1 (en) * | 2012-12-07 | 2014-06-12 | Robert Bosch Gmbh | Method for cleaning product-carrying area of pharmaceutical system for filling liquid pharmaceuticals, involves completely filling product-carrying area with liquid cleaning agent during cleaning phase |
| US20160167978A1 (en) | 2013-08-08 | 2016-06-16 | Ocean Team Group A/S | A permanent magnetic material |
| CN103949447B (en) * | 2014-04-22 | 2015-12-30 | 中国石油天然气第六建设公司 | Set lubricating oil system pipeline cleans and oil flushing equipment and method |
| SE538171C2 (en) * | 2014-05-23 | 2016-03-29 | Tts Marine Ab | Procedure for pipe washing of hydraulic systems and system for this |
| CN105127157A (en) * | 2015-08-28 | 2015-12-09 | 广东韶钢工程技术有限公司 | Automatically-controlled cleaning pump station for hydraulic system pipelines |
| CN107377542A (en) * | 2017-08-07 | 2017-11-24 | 浙江亘元润滑技术有限公司 | Heat-conducting oil system cleaning equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2341347A1 (en) * | 1976-02-19 | 1977-09-16 | Commissariat Energie Atomique | PROCESS FOR DECLOGING AN ELECTROMAGNETIC FILTER |
| GB2052719B (en) * | 1979-06-16 | 1983-10-05 | Weitman J | Method and apparatus for cleaning and increasing the efficiency of a heat exchanger |
| US4551041A (en) * | 1984-06-11 | 1985-11-05 | Conoco Inc. | Vibration method for unplugging a slurry pipeline |
| FI76935C (en) * | 1985-07-22 | 1989-01-10 | Goeran Sundholm | Coil assemblies. |
-
1997
- 1997-03-18 DK DK29997A patent/DK172595B1/en not_active IP Right Cessation
-
1998
- 1998-03-11 NO NO19981081A patent/NO312883B1/en not_active IP Right Cessation
- 1998-03-18 GB GB9805804A patent/GB2323421B/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NO981081D0 (en) | 1998-03-11 |
| NO312883B1 (en) | 2002-07-15 |
| GB2323421A (en) | 1998-09-23 |
| GB9805804D0 (en) | 1998-05-13 |
| NO981081L (en) | 1998-09-21 |
| GB2323421B (en) | 2001-05-16 |
| DK29997A (en) | 1998-09-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| B1 | Patent granted (law 1993) | ||
| PUP | Patent expired |
Expiry date: 20170318 |