DK171000B1

DK171000B1 - Valve for regulating a liquid flow

Info

Publication number: DK171000B1
Application number: DK203791A
Authority: DK
Inventors: Joergen Mosbaek Johannessen
Original assignee: Joergen Mosbaek Johannessen
Priority date: 1991-12-19
Filing date: 1991-12-19
Publication date: 1996-04-15
Also published as: DK203791D0; DK203791A

Description

DK 171000 B1DK 171000 B1

Opfindelsen angår et aggregat eller en ventil til regulering af en væske i et lukket eller åbent, helt eller delvis, fyldt rørlednings- eller kanalsy stem.The invention relates to an assembly or valve for regulating a liquid in a closed or open, fully or partially filled pipeline or duct system.

5 Det er kendt teknik at regulere en væske i et rør- eller kanalsystem. Bl.a. kan nævnes svømmerstyrede ventiler, vægstyrede ventiler, hvirvelventiler og trykstyrede ventiler samt kombinationer heraf. Tysk patent nr. 5.044.394 og 4.545.403 samt dansk patentansøgning 10 nr. 2169/90 og 72/91 er eksempler på sidstnævnte, som har det til fælles, at de styres af trykket før eller efter reguleringsenheden. Hvirvelventilerne eller -bremserne styres af trykket efter reguleringsenheden, og er således selvetablerende (selvren-sende) i tilfæl-15 de af forstoppelse, idet styretrykket forsvinder og styreenheden herved åbner for passage af de ting, der forårsagede forstoppelsen. Hvirvelventilerne har desuden den egenskab, at de har en stor hydraulisk modstand og hermed et stort gennemløbstværsnit. De er der-20 for især beregnet for regulering af mindre væskemængder med et indhold af urenheder, som kan udgøre en tilstopningsfare for andre ventiltyper.5 It is known in the art to regulate a fluid in a pipe or duct system. Among other things. can be mentioned swimmer controlled valves, wall controlled valves, swirl valves and pressure controlled valves as well as combinations thereof. German Patent Nos. 5,044,394 and 4,545,403 and Danish Patent Application Nos. 2169/90 and 72/91 are examples of the latter, which have in common that they are controlled by the pressure before or after the control unit. The vortex valves or brakes are controlled by the pressure of the control unit, and are thus self-establishing (self-cleaning) in the event of constipation, the control pressure disappearing and the control unit thereby opening for the things that caused the constipation. In addition, the vortex valves have the characteristic that they have a large hydraulic resistance and hence a large cross-section. They are, in particular, intended for the regulation of smaller quantities of fluids with a content of impurities which may pose a clogging hazard for other valve types.

Formålet med opfindelsen er, at anvise en løsning på en afløbsregulator eller en ventil til regule-25 ring af så store væskemængder, at der ikke kræves speciel stor hydraulisk modstand i forhold til gennemløbstværsnittet for at opnå et tilstrækkeligt stort gennemløbstværsnit ved en ønsket modstand, men hvor der til gengæld er lagt stor vægt på følgende egenskaber: 30 at regulatoren er kompakt og mindst muligt pladskrævende, så den ikke kræver et specielt bygværk, men ofte kan indbygges i eksisterende brønde, at regulatoren ikke kræver højdetab, men kan indbygges i et mireret ledningssystem, 35 at regulatoren har et stort indstillingsinterval i kapacitet, DK 171000 B1 2 at regulatorens karakteristik kan ændres efter ønske, at regulatoren er let at inspicere for justering eller mere radikal ændring af kapacitet eller karakte-5 ristik, at man med så få standardstørrelser og en vis overlapning kan dække et meget stort reguleringsområde, og at regulatoren er tørt opstillet og let at til-10 slutte rørlednings- eller kanalsystemet.The object of the invention is to provide a solution for a drain regulator or valve for regulating such a large amount of fluid that no particularly large hydraulic resistance is required in relation to the flow cross section to obtain a sufficiently large flow cross section at a desired resistance, but where, in turn, great emphasis has been placed on the following characteristics: 30 that the controller is compact and minimally space-intensive, so that it does not require a special structure, but can often be built into existing wells, the controller does not require height loss, but can be built into a mirrored wiring system, 35 that the controller has a large setting range in capacity, DK 171000 B1 2 that the characteristics of the controller can be changed as desired, that the controller is easy to inspect for adjustment or more radical change of capacity or characteristics that with so few standard sizes and some overlap may cover a very large regulatory area and that the controller e is dry and easy to connect to the pipeline or duct system.

Dette opfyldes ved hjælp af en ventil ifølge krav 1.This is accomplished by means of a valve according to claim 1.

Opfindelsen vil i det følgende blive forklaret nærmere ved hjælp af et udførelseseksempel under hen-15 visning til tegningen, på hvilken fig. 1 viser et langsgående, lodret snit gennem en ventil eller regulator ifølge opfindelsen, fig. 2 regulatoren i fig. 1 set fra den ned-strøms side, 20 fig. 3 regulatoren i fig. 1 set fra oven, og fig. 4 regulatoren i fig. 1 set fra den opstrøms side.The invention will now be explained in more detail by way of example with reference to the drawing, in which: FIG. 1 shows a longitudinal vertical section through a valve or regulator according to the invention; FIG. 2 shows the controller of FIG. 1 from the downstream side, FIG. 3 shows the controller of FIG. 1, and FIG. 4 shows the controller of FIG. 1 from the upstream side.

Regulatoren ifølge opfindelsen består af et regulatorhus 1 med sider 2, som sammen med en endefla-25 devæg 3, en skillevæg 4 og en topplade 7 med en luftdyse 8 danner et luftkammer 38 over en indløbstud 5, med et bundløb 6 og udfyldningsstykker 9 med tætningsindretning 10 og udfyldningsstykker 11 med huller 12 for tand indgreb med knopper 14 på en 30 rundstang 13. Over udfyldningsstykkerne li er monteret et tværgående vinkelprofil 15 med et lodret udvendigt gevindrør 16, hvorover et rør 17 med indvendigt gevind og en fast forbindelsesstang 18 med nøglehul 19 for neden og krave 20 for en fjeder 21 er 35 monteret og ved drejning kan bringes til at forspænde en fjeder 21. Over regulatorhuset 1 på toppladen 7 DK 171000 B1 3 er monteret et demonterbart topdæksel 22 med luftpassage (kanal) 23 og monteringsbolte 24. Mellem toppladen 7 og topdækslet 22 er fastspændt en formstøbt, strækningsresistent men bøjelig membran 25 med 5 luftåbning 26, hvilken membran hviler på et stempel 27 med et centralt placeret, indvendigt gevindrør 28 på undersiden, hvilket rør er i gevindforbindelse med et rør 30 som danner udvendigt styr for fjederen 21, gennem en forbindelsesvæg 31 er i fast forbindelse 10 med en spærreplade 32 med huller 33 for tandindgreb med rundstangen 13's knopper 14 og ved toppen i siderne er forsynet med aksler 34 for styrehjul 35 med konisk fordybning 36 for indgreb over en konisk styreskinne 37 på sidevæggene 2's inderside.The controller of the invention consists of a regulator housing 1 with sides 2 which together with an end surface wall 3, a partition 4 and a top plate 7 with an air nozzle 8 forms an air chamber 38 over an inlet stud 5, with a bottom outlet 6 and filling pieces 9 with sealing device 10 and filling pieces 11 with holes 12 for tooth engagement with knobs 14 on a round bar 13. A transverse angular profile 15 is mounted with a vertical external threaded pipe 16, over which a pipe 17 with internal thread and a fixed connecting rod 18 with key holes 19 below and collar 20 for a spring 21 is 35 mounted and can be caused to bias a spring by turning 21. Above the regulator housing 1 on the top plate 7 DK 171000 B1 3 is mounted a removable top cover 22 with air passage (duct) 23 and mounting bolts 24 Between the top plate 7 and the top cover 22 is clamped a molded, stretch resistant but flexible membrane 25 with 5 air aperture 26 which rests on a piston 27 with a centrally located inner thread tube 28 on the underside, which tube is threaded with a tube 30 which forms the outer guide of the spring 21, through a connecting wall 31 is in fixed connection 10 with a locking plate 32 with holes 33 for tooth engagement with the round bar 13's knobs 14 and at the top in the sides are provided with shafts 34 for steering wheels 35 with tapered recess 36 for engagement over a tapered guide rail 37 on the inside of the side walls 2.

15 Regulatoren virker på følgende måde.15 The controller operates as follows.

I det lodrette snit af regulatoren vist i fig. 1 løber væsken fra højre mod venstre i den viste pils retning. Så længe væskeniveauet ikke overstiger niveau F har væsken frit gennemløb. Når væsken overstiger 20 dette niveau støder den først mod væggen 4's nederste del og herefter væggen 3's nederste del, hvorved den lukker luften i kammer 38 inde. Ved yderligere vandrejsning kommer den indespærrede luft under tryk, hvorved den presses gennem åbningerne 8, 26 og 2 3 op i 25 hulrummet mellem topdækslet 22 og membranen 25. Trykket forplanter sig til hulrummets vægge, men hulrummet kan kun expandere nedad gennem det tryk, der overføres gennem membranen 25 til stemplet 27's overside. Stemplet, der er i fast forbindelse med spærre-30 pladen 32, som regulerer gennemløbstværsnittet, holdes i topstilling af fjederen 21, der er således afstemt med membranens afvikling af sit tryk på stemplets overside, at den ønskede kapacitet og karakteristik opnås. Typisk er målet et konstant afløb på trods af et sti-35 gende tryk, men oftere og oftere stilles der krav om mere specielle karakteristikker. I forbindelse med re- DK 171000 B1 4 gulering af afløb i fælles kloaksystemer er det ofte ønskeligt med et større afløb i starten af en regnbyge for at få den første og mest forurenede del af afløbet under bygen ført til renseanlægget inden aflastning 5 finder sted. Omvendt, når det regner meget kraftigt og opspændingsgraden er høj, er der ingen grund til at overbelaste renseanlæggene med tyndt spildevand. Den ideelle karakteristik vil i denne situation være et aftagende afløb ved stigende tryk. Omvendt vil det være 10 for afløbet fra et udligningsbassin, som er placeret yderligt i et opland. Så vil ledningssystemet være hårdest belastet i starten af en byge fra de dele af oplandet, der ikke føres til udligningsbassin, medens der er overskudskapacitet i slutningen af en byge, hvor 15 bassinet er fyldt, og der er maximal stuvningshøjde.In the vertical section of the controller shown in FIG. 1, the liquid flows from right to left in the direction of the arrow shown. As long as the liquid level does not exceed level F, the liquid has free flow. When the liquid exceeds 20 this level, it first encounters the lower part of the wall 4 and then the lower part of the wall 3, thereby closing the air in chamber 38. Upon further travel of water, the trapped air comes under pressure, thereby pushing through the openings 8, 26 and 23 into the cavity between the top cover 22 and the membrane 25. The pressure propagates to the walls of the cavity, but the cavity can only expand downward through the pressure is transferred through the membrane 25 to the upper side of the piston 27. The piston, which is firmly connected to the barrier plate 32 which regulates the passage cross-section, is held in the top position by the spring 21, which is so aligned with the diaphragm's unwinding of its pressure on the upper surface of the piston that the desired capacity and characteristics are obtained. Typically, the target is a constant drain despite a rising pressure, but more and more often more specific characteristics are required. In connection with re-cleaning of drains in common sewer systems, it is often desirable to have a larger drain at the beginning of a rain shower to get the first and most contaminated part of the drain under the barley to the treatment plant before relief 5 takes place. Conversely, when it rains very heavily and the degree of tension is high, there is no need to overload the wastewater treatment plants with thin wastewater. The ideal characteristic in this situation will be a decreasing drain at increasing pressure. Conversely, it will be 10 for the drainage from an equalization basin, which is located farther in an upland. Then the conduit system will be most heavily loaded at the beginning of a burst from those parts of the upland that are not fed to the equalization basin, while there is excess capacity at the end of a burst where the basin is filled and there is maximum stowage height.

Den ideelle karakteristik i denne situation er et stigende afløb ved stigende tryk uden at det nødvendigvis er den simple parabelkarakteristik, der er den optimale. Med den foreslåede regulator er det umiddelbart mu-20 ligt at ændre såvel kapacitet som karakteristik ved henholdsvis at forspænde fjederen med en nøgle i nøglehullet 19 eller at sænke spærrepladen 32 ved at dreje på stemplet 27, så røret 30 skrues ned af røret 28. Herudover kan spærrepladen udskiftes til en 25 plade med en anden udformning af underkanten. De største muligheder ligger umiddelbart i udformningen af stemplet 27, der kan udformes konisk med stærkere eller svagere hældende side eller med konkave eller konvekse sider eller kombinationer heraf. Den kraft mem-30 branen 25 overfører til stemplet afhænger foruden af det øjeblikkelige tryk også af trykfladens størrelse. Størrelsen af den øjeblikkelige trykflade er lig med det areal, som ligger indenfor membranens bøjningspunkt, dvs. indenfor diameteren D, vist i fig. l. Alle 35 ovennævnte indgreb kan foretages umiddelbart, uden demontering af regulatoren. For at minimere spærrepladensThe ideal characteristic in this situation is a rising drain at increasing pressure without necessarily the simple parabola characteristic being the optimum. With the proposed regulator, it is immediately possible to change both capacity and characteristics by pre-tensioning the spring with a key in the keyhole 19 or lowering the locking plate 32 by turning on the piston 27 so that the tube 30 is screwed down by the tube 28. In addition For example, the barrier plate may be replaced with a plate having a different configuration of the lower edge. The greatest possibilities lie immediately in the design of the piston 27, which can be conically formed with a stronger or weaker inclined side or with concave or convex sides or combinations thereof. The force transmitted by the membrane 25 to the piston depends, in addition to the instantaneous pressure, also on the size of the pressure surface. The size of the instantaneous pressure surface is equal to the area which lies within the point of inflection of the membrane, ie. within the diameter D, shown in FIG. l. All of the aforementioned interventions can be made immediately, without dismantling the controller. To minimize the barrier plate

Claims

15 PATENT REQUIREMENTS

A valve for regulating a fluid flow and having a flow opening, the size of which is controlled in response to a pressure in the flowing fluid, comprising a slide aperture (32) in conjunction with a flexible diaphragm (25) forming a wall in a compartment (22, 8, 38) communicating with the flowing fluid, whereby the diaphragm (25) moves, at increasing pressure, the aperture (32) to a closing position against the force of a spring (21), characterized in that the diaphragm (25) is flexible, but substantially unstretchable, that there is a substantially circular bowl-shaped body (27) having a predetermined outer cross-section, which body (27) communicates at its concave side with the slide aperture ( 32) that the diaphragm (25) has the same shape as the convex side of the cup-shaped body (27) and that the diaphragm (25) is arranged so that when the slide aperture (32) is retracted into its open position it abuts the bowl-shaped body 35 (27) o substantially all of this exterior, convex surfaces. DK 171000 B1 6

Valve according to claim 1, characterized in that the spring (21) can be provided with a predetermined adjustable bias.

Valve according to claim 1 or 2, characterized in that the mutual position of the cup-shaped body (27) and the slide aperture (32) is adjustable.