SE537407C2 - Device for ensuring that suppression in tanks / tanks is kept within established values including vacuum sensor - Google Patents

Abstract

Sammandrag Anordning for sakerstallande av att undertryck i tankar/cisterner halls inom faststallda varden innefattande en vakuumsensor (10), som avger signaler till en programmerbar styrenhet (9) fOr manovrering av ett spjall (8) i en spjallanordning (7) for reglering av undertrycket till faststallda varden. Styrenheten innehaller aven program med funktioner ft- Overvakning, motionering av spjallenheten samt larmregistrering Summary Device for ensuring that negative pressure in tanks / cisterns is kept within established values, comprising a vacuum sensor (10), which emits signals to a programmable control unit (9) for maneuvering a damper (8) in a damper device (7) for regulating the negative pressure to established values. The control unit also contains programs with functions ft- Monitoring, exercise of the damper unit and alarm registration

Description

Vakuumsakring Tekniskt omrade Den har uppfinningen avser en anordning far sakerstallande av att undertryck i tankar/cisterner halls inom faststallda varden innefattande vakuumsensor. Technical field The invention relates to a device for ensuring that negative pressure in tanks / cisterns is kept within established values, including a vacuum sensor.

Teknikens standpunkt Fyllnadsgraden varierar i reservoarer/cisterner for vatten och andra vatskor. Luft evakueras under fyllning och tas in under tamning. Tankar far t.ex. uppvarmningssystem har en relativt konstant fyllnadsgrad och darmed konstant v6tskeniva da mangden instrommande vatten direkt Mrs ut i cirkulationssystemet. Sada typerna av tankar kraver emellertid en hog sakerhet mot skadliga undertryck. Olika losningar forekommer i form av luftintag som vid normal drift sparras med sprangmembran, vattenpelare i form av vattenlas eller fjaderbelastade sakerhetsventiler. Problemet är att fjaderbelastade sakerhetsventiler och sprangmembran inte kan tillverkas for de I6ga undertryck som de fiesta tankar och cistemer är dimensionerade far. Lasningar med vattenla's är utsatta for frysningsrisk och kraver armed regelbunden tillsyn pa platser som ofta är avlagsna och svartillgangliga. Den pa alla cisterner nadvandiga filterfarsedda ventilationskanalen drabbas ofta av nedisning varvid den instrommande luften vid tamning starkt begransas och undertryck uppga'ende till flera ton per m2 kan uppstA. Detta leder i varsta fall till en kollaps hos cisternen med allvarliga foljder av t.ex. 16nga avbrott i distributionen av dricksvatten. Eftersom konsekvensema av ett hayed är stora sa an en hog sakerhet befogad. State of the art The degree of filling varies in reservoirs / cisterns for water and other water shoes. Air is evacuated during filling and taken in during taming. Thoughts far e.g. heating systems have a relatively constant degree of filling and thus a constant liquid level as the amount of inflowing water directly flows into the circulation system. Such types of thoughts, however, require a high degree of certainty against harmful negative pressures. Various discharges occur in the form of air intakes which during normal operation are blocked with burst membranes, water columns in the form of water seals or spring-loaded safety valves. The problem is that spring-loaded safety valves and burst diaphragms cannot be manufactured for the I6ga negative pressures that most tanks and systems are dimensioned father. Loading with water layers is exposed to the risk of freezing and requires regular inspection in places that are often remote and black accessible. The filter-channeled ventilation duct present on all tanks is often affected by icing, whereby the inflowing air during taming is severely limited and negative pressure amounting to several tonnes per m2 can arise. This in any case leads to a collapse of the cistern with serious consequences of e.g. No interruptions in the distribution of drinking water. Since the consequences of a hayed are great, a high security is justified.

ProblemlOsning Den har uppfinningen loser de namnda problemen med den kanda tekniken genom att den har de i de efterfaljande angivna sardragen. Den loser aven problemen med overvakning och registrering av ej planlagda spjalloppningar, aktivering av komponenter for in- och utslapp av luft (motionering) och indikering av driftstorningar som inte är markbara i distributionen av cisternens innehell. TROUBLESHOOTING The invention solves the mentioned problems with the prior art in that it has the features stated in the following. It also solves the problems of monitoring and registering unplanned chute openings, activating components for air entry and exit (exercise) and indicating operational disturbances that are not noticeable in the distribution of the tank's contents.

Figunbrteckning Figur 1 visar en tank/cistern med vakuumsakring och obligatorisk fran-/tilluftkanal. Figure drawing Figure 1 shows a tank / cistern with vacuum fuse and mandatory exhaust / supply air duct.

Detaljbeskrivning av uppfinningen Figur 1 visar en tank-/cisternanlaggning 1 farsedd med den obligatoriska fran/tilluftanordningen 2 och in- och utloppsledningar 3,4. En anordning 5 for vakuumsakring innefattar en luftkanal 6 mellan tankens/cistemens luftfyllda Ovre del och en spjallanordning 7 med ett spjall 8, vilket manavreras pa pneumatisk, elektrisk eller elektromagnetisk vag. Spjallanordningen styrs av programmerbar styrenhet 9, som tar emot signaler tan en vakuumsensor 10 placerad i luftkanalen 6, alternativt i tankens icke vatskefylIda utrymme. Om sensorn 10 indikerar ett otillatet undertryck avger den en signal till styrenheten 9 som avger manaversignaler till spjallanordningen att reglera trycket i tanken/cisternen till faststallt varde. Styrenhetens program innehaller aven funktioner far overvakning, motionering av spjallenheten samt larmregistrering. 1 Detailed description of the invention Figure 1 shows a tank / cistern system 1 fitted with the obligatory exhaust / supply air device 2 and inlet and outlet pipes 3,4. A device 5 for vacuum securing comprises an air duct 6 between the air-filled upper part of the tank / system and a throttle device 7 with a throttle 8, which is operated on a pneumatic, electric or electromagnetic scale. The throttle device is controlled by a programmable control unit 9, which receives signals from a vacuum sensor 10 placed in the air duct 6, alternatively in the non-liquid-filled space of the tank. If the sensor 10 indicates an impermissible negative pressure, it emits a signal to the control unit 9 which emits control signals to the throttle device to regulate the pressure in the tank / tank to a determined value. The control unit's program also contains functions for monitoring, exercising the damper unit and alarm registration. 1

Claims (2)

PatentkravPatent claims 1. Anordning for sakerstallande av att undertryck i tankar/cisterner halls inom faststallda varden vid pafyllning/tOmning av innehallet, kennetecknad av att en vakuumsensor (10) i en luftkanal (6) mellan tankenstisternens ovre luftfylIda del och en spjallanordning (7) avger en signal till en programmerbar styrenhet (9) som avger signaler till spjallanordningen att pa pneumatisk, elektrisk eller elektromagnetisk vag mantivrera ett spjall (8) for att reglera undertrycket i tanken/cisternen till faststallt varde.Device for ensuring that negative pressure in tanks / cisterns is kept within the established values when filling / emptying the contents, characterized in that a vacuum sensor (10) in an air duct (6) between the upper air-filled part of the tank tank and a throttle device (7) emits a signal to a programmable control unit (9) which emits signals to the throttle device to maneuver on a pneumatic, electric or electromagnetic wave a throttle (8) to regulate the negative pressure in the tank / tank to a determined value. 2. Anordning enligt patentkrav 1, kannetecknad av att den program merbara styrenheten (9) innehaller program med funktioner fOr Overvakning, motionering av spjallenheten samt larmregistrering. 2 iDevice according to claim 1, characterized in that the programmable control unit (9) contains programs with functions for monitoring, exercising the damper unit and alarm registration. 2 i