DK148627B - TANK WITH A DOUBTLY DROPPED DOUBLE SURFACE - Google Patents

TANK WITH A DOUBTLY DROPPED DOUBLE SURFACE Download PDF

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Publication number
DK148627B
DK148627B DK59381A DK59381A DK148627B DK 148627 B DK148627 B DK 148627B DK 59381 A DK59381 A DK 59381A DK 59381 A DK59381 A DK 59381A DK 148627 B DK148627 B DK 148627B
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DK
Denmark
Prior art keywords
tank
channel
doubtly
dropped
wall
Prior art date
Application number
DK59381A
Other languages
Danish (da)
Other versions
DK59381A (en
DK148627C (en
Inventor
Karl Johan Georg Maartensson
Original Assignee
Alfa Laval Ab
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 Alfa Laval Ab filed Critical Alfa Laval Ab
Publication of DK59381A publication Critical patent/DK59381A/en
Publication of DK148627B publication Critical patent/DK148627B/en
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Publication of DK148627C publication Critical patent/DK148627C/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00Component parts, details or accessories for large containers
    • B65D90/22Safety features
    • B65D90/32Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
    • B65D90/34Venting means

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Wood Science & Technology (AREA)
  • Animal Husbandry (AREA)
  • Environmental Sciences (AREA)

Description

U8627 iU8627 i

Opfindelsen angår en tank med en i det væsentlige lodret ydervæg, der består af en indre væg og en via et afstandselement uden for denne anbragt kappe således, at der dannes et isolerende rum mellem denindre væg og kappe, hvil-5 ken tank er beregnet til opstilling i det fri og til for neden at blive tilsluttet en bygning og har en trykudligningskanal til forhindring af under- eller overtryk i tanken, f.eks. ved skylning af denne. Med tankens tilslutning til en bygning forstås specielt en anvendelse, hvor 10 tanken opstilles ved en bygning og tilsluttes denne ved hjælp af en korridor. Dog kan opfindelsen tilpasses til en hvilken som helst anvendelse, hvor en tank forneden tilsluttes et mod omgivelserne afgrænset rum, såsom et servicerum opført direkte ved tanken.BACKGROUND OF THE INVENTION The invention relates to a tank having a substantially vertical outer wall consisting of an inner wall and a spacer located outside this sheath such that an insulating space is formed between the inner wall and sheath, which tank is intended for installation in the open and below to be connected to a building and has a pressure equalization channel for preventing under- or overpressure in the tank, e.g. by rinsing this one. In particular, the tank connection to a building is understood to be an application in which the tank is set up by a building and connected to it by means of a corridor. However, the invention can be adapted to any application where a tank is connected below a space bounded to the surroundings, such as a service room constructed directly at the tank.

15 Til eliminering af skadelige over- eller undertryk i en lukket tank ved operationer såsom fyldning, tømning eller skylning, kræves en trykudligningskanal, som via en åbning i tankens øverste del sætter tankens indre i forbindelse med omgivelserne. Risikoen for beskadigelser er 20 naturligvis særlig stor ved undertryk, eftersom blot for holdsvis mindre undertryk kan forårsage, at tanken sammentrykkes. Et eksempel på en situation, hvor et skadeligt undertryk let opstår, er skylning af en tank ved hjælp af et indbygget skylningsaggregat, hvor varm skyllevæske øger 25 tankatmosfærens temperatur og dampindhold, inden tankatmos færen hurtigt afkøles. For at trykket skal kunne udlignes tilstrækkelig hurtigt, skal trykudligningskanalen have et passende tværsnitsareal. Det kan blandt andet nævnes, at der ved mælketanke på ca. 50 m"5 anvendes trykudlignings-30 rør med en diameter af størrelsesordenen 150-200 mm. Som trykudligningskanal har man længe af hensyn til en enkel konstruktion anvendt en skorstenlignende åbning i tankens top. Ulemperne ved denne løsning er åbenbare. Trods anvendelse af filterelementer og lignende organer kan det ikke 35 undgås, at partikler fra den omgivende atmosfære, smådyr etc. trænger ind og forurener indholdet i tanken. I om- 2 148627 råder med kolde vintre tilfryser filtreret eller kanalåbningerne let. Forureningsproblemet er selvfølgelig særlig stort ved levnedsmiddeltanke, såsom en mælketank uden for et mejeri. Ved sådanne anvendelser er også frost et betyde-5 ligt problem på grund af dannelsen af damp og kondensat i forbindelse med hyppige tømnings- og fyldningsoperationer og i særdeleshed fra de mellemliggende skylningscykler.15 For the elimination of harmful over or under pressure in a closed tank during operations such as filling, emptying or rinsing, a pressure equalization channel is required which, via an opening in the upper part of the tank, connects the interior of the tank with the surroundings. The risk of damage is, of course, particularly high in underpressure, since only too small underpressure can cause the tank to compress. An example of a situation where a harmful underpressure easily occurs is the flushing of a tank by means of a built-in rinsing unit, where hot rinsing fluid increases the temperature and vapor content of the tank atmosphere before the tank atmosphere cools rapidly. In order for the pressure to be equalized sufficiently quickly, the pressure equalization channel must have a suitable cross-sectional area. Among other things, it can be mentioned that for milk tanks of approx. 50 m "5 is used for pressure equalization pipes with a diameter of the order of 150-200 mm. As a pressure equalization channel, a chimney-like opening has been used at the top of the tank for a simple construction. The disadvantages of this solution are obvious. Despite the use of filter elements and similar organs, it is not possible to prevent particles from the surrounding atmosphere, small animals etc. from entering and contaminating the contents of the tank.In cold winters, filtered or the channel openings freeze lightly, of course. In such applications, frost is also a significant problem due to the formation of steam and condensate in connection with frequent emptying and filling operations and in particular from the intermediate rinsing cycles.

For at råde bod på dette forurenings- og tilfrysningspro-10 biem har man i forbindelse med tanke opstillet i tilslutning til en bygning foreslået at montere et forbindelsesrør fra tankens top, som fører enten direkte ind i bygningen eller til en korridor ved tankens bund, og som danner trykudligningskanalen. Ved korridor forstås i 15 denne sammenhæng en hvilken som helst lukket forbindelse mellem tanken og den nærliggende bygning; en sådan forbindelse kan f.eks. tjene som forbindelsesgang mellem bygningen og et mandehul i tanken, og bygningen eller som hus for tankudstyr etc. Ved en sådan føring af trykud-20 ligningskanalen undgår man i hovedsagen, at forurenet eller for kold luft føres til tanken.In order to remedy this pollution and freezing problem, in connection with tanks arranged adjacent to a building, it has been proposed to mount a connecting pipe from the top of the tank, which leads either directly into the building or to a corridor at the bottom of the tank, and which forms the pressure equalization channel. Corridor in this context means any closed connection between the tank and the adjacent building; such a compound can e.g. serve as a connection between the building and a manhole in the tank, and the building or as a housing for tank equipment etc. In such a guide of the pressure equalization duct, it is generally avoided that contaminated or too cold air is fed to the tank.

Det relativt tykke trykudligningsrør, ligesom øvrige uden for tanken nødvendige rørledninger, såsom skylleledning og rør til beskyttelse mod overfyldning, kræver for hver 25 tankanvendelse hver sit separate tilslutningsarbejde. IThe relatively thick pressure relief tube, like other piping needed outside the tank, such as flushing conduit and overflow protection tubes, requires separate connection work for every 25 tank applications. IN

områder med kolde vintre skal de forskellige rør endvidere isoleres til forebyggelse af tilfrysning.In areas with cold winters, the various pipes must also be insulated to prevent freezing.

Formålet med opfindelsen er at eliminere denne ledningsføring uden for tanken på en fordelagtig måde set fra et 30 fremstillingsøkonomisk synspunkt og at mindske tilslutningsarbejdet på anvendelsesstedet med henblik på trykudligningskanalen, og eventuelt også skylleledning og overfyldningsrør.The object of the invention is to eliminate this wiring outside the tank in an advantageous manner from a manufacturing economical point of view and to reduce the connection work at the application point for the pressure equalization channel, and possibly also flushing line and overflow pipe.

3 1488273 148827

Dette formål opnås ifølge opfindelsen ved at udforme tanken af den indledningsvis nævnte art på den i den kendetegnende del af krav 1 anførte måde. På denne måde bliver trykudligningskanalen sammenbygget med selve tanken, 3 hvilket gør konstruktionen enklere. Endvidere bliver det muligt konstruktionsmæssigt at give kanalen en god beskyttelse.This object is achieved according to the invention by designing the tank of the type mentioned in the introduction in the manner specified in the characterizing part of claim 1. In this way, the pressure equalization channel is combined with the tank itself, 3 making the construction simpler. Furthermore, it will be possible to give the channel good protection in terms of design.

Det nødvendige forholdsvis store tværsnitsareal for trykudligningskanalen kan således ifølge opfindelsen opnås ved, 10 at kanalens tværsnit gives en væsentlig større udstrækning i tankens omkredsretning end på tværs af tankens ydervæg og tilpasses efter tankens form således, at kanalen er helt omgivet af det isolerende rum mellem tankens indre og ydre kappe. Derved opnås også den fremstillingsmæssige fordel, 15 at halvdelen af kanalen så at sige allerede findes, idet den udgøres af tankens indre væg, og resten af kanalens afgrænsningsflade fås ved at svejse et enkelt pladeelement til tankens indre væg langs to i det væsentlige lodrette kanter.Thus, according to the invention, the relatively large cross-sectional area of the pressure equalizing channel can be obtained in that the cross-section of the channel is given a substantially greater extent in the circumferential direction of the tank than across the outer wall of the tank and is adapted to the shape of the tank so that the channel is completely surrounded by the insulating space between the tanks. inner and outer sheath. This also provides the manufacturing advantage that half of the duct is, so to speak, already present, being constituted by the inner wall of the tank, and the rest of the delimiting surface of the duct is obtained by welding a single plate element to the inner wall of the tank along two substantially vertical edges.

20 Opfindelsen vil blive nærmere beskrevet i det følgende under henvisning til tegningen, hvor fig. 1 viser et lodret snit af en uisoleret tank på anvendelsesstedet, og fig. 2 viser et tværsnit af tanken fra fig. 1 forsynet 25 med isolering og yderkappe.The invention will be further described in the following with reference to the drawing, in which 1 is a vertical sectional view of an uninsulated tank at the point of use; and FIG. 2 shows a cross section of the tank of FIG. 1 provided with insulation and outer casing 25.

Som vist på tegningen er en tank 1 forneden tilsluttet en bygning 3 via en korridor 2. Tanken har en cylindrisk indre væg 4 og en via afstandselementer 5, 6 omkring denne anbragt ydre kappe 7 således, at der dannes et i tværsnit 30 ringformet, isolerende rum 8 mellem den indre væg 4 og kappen 7. I en i korridoren 2's tilslutningssektor a be- 4 148627 liggende del af det ringformede, isolerede rum 8 er et pladeelement 9 fastgjort til den indre væg 4 langs to lodrette kanter og danner sammen med denne væg en trykudligningskanal 10 med et aflangt tværsnit.As shown in the drawing, a tank 1 below is connected to a building 3 via a corridor 2. The tank has a cylindrical inner wall 4 and a outer casing 7 arranged via spacers 5, 6 to form an annular, insulating section 30. space 8 between the inner wall 4 and the sheath 7. In a portion of the annular, insulated space 8 located in the connecting sector a of the corridor 2, a plate element 9 is attached to the inner wall 4 along two vertical edges and together with this wall a pressure equalization channel 10 having an oblong cross section.

5 Tjykudligningskanalen 10 udmunder opadtil i tanken via en i tankens indre væg 4 udformet spalte 11, som strækker sig langs hele kanalen 10's bredde, og munder nedadtil ud i korridoren 2 under pladen 9's underkant. Til opsamling af eventuelt kondensat og overløbsvæske er der udformet en op-10 samlingsrende 12 af et pladelement, som er fastgjort til tankens indre væg 4. Renden 12 tømmes ved hjælp af en tømningsledning 13.The thick equalization channel 10 opens upwardly into the tank via a slot 11 formed in the inner wall of the tank 11, which extends along the entire width of the channel 10, and opens downwards into the corridor 2 below the bottom edge of the plate 9. To collect any condensate and overflow fluid, a collecting ring 12 is formed of a plate element which is attached to the inner wall of the tank 4. The channel 12 is emptied by means of a discharge line 13.

I trykudligningskanalen 10 findes en ledning 14 for skylle-væske, som strækker sig op til tankens top til et ikke vist 15 · spredeorgan.In the pressure equalization channel 10 there is a rinsing fluid conduit 14 which extends up to the top of the tank to a 15 ° spreader not shown.

Som det fremgår af fig. 2, er trykudligningskanalen 10 udformet tilstrækkelig smal til at give plads til et smalt isoleringslag mellem kanalen og kappen 7. Ved anvendelser hvor der ikke er risiko for, at den omgivende lufts tem-20 peratur bliver alt for lav, kan man undvære isolerings-masse uden for trykudligningskanalen, da kanalen i forbindelse med atmosfæren i bygningen og tankens indre i sig selv frembyder tilstrækkelig isolering.As shown in FIG. 2, the pressure equalizing duct 10 is designed to be sufficiently narrow to allow for a narrow insulating layer between the duct and the jacket 7. In applications where there is no risk of the ambient air being too low, insulation mass can be avoided. outside the pressure equalization duct, since the duct in connection with the atmosphere of the building and the interior of the tank itself provides sufficient insulation.

I trykudligningskanalen kan man med fordel også anbringe 25 andre serviceledninger fra bygningen eller korridoren til tankens top, såsom elkabler til belysning og niveau-detektering. Trykudligningskanalen kan med sin langstrakte spalteåbning foroven i tanken og med en opsamlings-rende forbundet med en tømningsledning forneden være 30 indrettet således, at den også fungerer som en effektiv beskyttelse mod overfyldning.Advantageously, in the pressure equalization duct, 25 other service lines from the building or corridor to the top of the tank, such as electrical cables for illumination and level detection, can also be placed. The pressure equalizing channel, with its elongated slot opening at the top of the tank and with a collecting duct connected to a discharge line below, can be arranged so that it also acts as an effective protection against overfilling.

DK59381A 1980-02-14 1981-02-12 TANK WITH A DOUBTLY DROPPED DOUBLE SURFACE DK148627C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8001162A SE420076B (en) 1980-02-14 1980-02-14 DOUBLE WALL TANK
SE8001162 1980-02-14

Publications (3)

Publication Number Publication Date
DK59381A DK59381A (en) 1981-08-15
DK148627B true DK148627B (en) 1985-08-19
DK148627C DK148627C (en) 1986-04-28

Family

ID=20340248

Family Applications (1)

Application Number Title Priority Date Filing Date
DK59381A DK148627C (en) 1980-02-14 1981-02-12 TANK WITH A DOUBTLY DROPPED DOUBLE SURFACE

Country Status (8)

Country Link
AU (1) AU523298B2 (en)
CA (1) CA1151831A (en)
DE (1) DE3105326A1 (en)
DK (1) DK148627C (en)
FR (1) FR2476039A1 (en)
GB (1) GB2071747B (en)
NL (1) NL8100717A (en)
SE (1) SE420076B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE149086C (en) *
DE1223132B (en) * 1960-11-02 1966-08-18 Wilke Werke Ag Heatable steel silo
JPS5547735Y2 (en) * 1976-03-26 1980-11-08
DE2715458A1 (en) * 1977-04-06 1978-10-12 Jules Egli Ag Bauunternehmung Liq. tank jacket vent system - with greater heat transfer to air in safety chamber near outlet at top to generate draught

Also Published As

Publication number Publication date
GB2071747B (en) 1983-01-06
SE420076B (en) 1981-09-14
DK59381A (en) 1981-08-15
AU523298B2 (en) 1982-07-22
NL8100717A (en) 1981-09-16
AU6728081A (en) 1981-09-17
FR2476039B1 (en) 1984-07-20
FR2476039A1 (en) 1981-08-21
GB2071747A (en) 1981-09-23
DE3105326A1 (en) 1981-12-17
SE8001162L (en) 1981-08-15
CA1151831A (en) 1983-08-16
DK148627C (en) 1986-04-28

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