EP3374101B1 - Tanktop und tank - Google Patents

Tanktop und tank Download PDF

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Publication number
EP3374101B1
EP3374101B1 EP16788454.3A EP16788454A EP3374101B1 EP 3374101 B1 EP3374101 B1 EP 3374101B1 EP 16788454 A EP16788454 A EP 16788454A EP 3374101 B1 EP3374101 B1 EP 3374101B1
Authority
EP
European Patent Office
Prior art keywords
lance
manhole cover
nozzle body
cover according
splash
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP16788454.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3374101A1 (de
Inventor
Martin Sauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evoguard GmbH
Original Assignee
Evoguard GmbH
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 Evoguard GmbH filed Critical Evoguard GmbH
Publication of EP3374101A1 publication Critical patent/EP3374101A1/de
Application granted granted Critical
Publication of EP3374101B1 publication Critical patent/EP3374101B1/de
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • 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
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
    • B08B9/0813—Cleaning containers having tubular shape, e.g. casks, barrels, drums by the force of jets or sprays
    • 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
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies

Definitions

  • the invention relates to a tank top according to claim 1 and a tank according to claim 16.
  • the tank top is, for example, a unit with at least one vacuum valve, one safety valve, measuring technology and cleaning technology.
  • the tank top arranged, for example, on the upper lid of the tank must be cleaned during the tank cleaning on its inner surfaces that come into contact with the product. Spray balls or jet cleaners intended for cleaning the tank cannot ensure thorough cleaning of the tank top. Therefore, to clean the inside of the tank top, spray holes are made in a lance that is guided through the tank top to a spray head.
  • Cylindrical bores in the lance only produce a very tightly focused spray jet, which corresponds to that of a conventional spray ball, for example. Due to the thin wall thickness of the lance, which is usually only 1.5 to 2.0 mm, it is not possible to influence the jet shape. This is not a disadvantage for a spray ball, whose spray jets have to cover areas of the tank wall that are further away, but is disadvantageous under the cramped conditions, for example in the cross piece of the tank top, since the narrowly focused spray jet can only directly apply the cleaning agent to a very small area. This means that a large number of bores, possibly with large diameters, are required for reliable cleaning, which results in a high consumption of cleaning medium.
  • a known tank has standing cylindrical posts on the top of the tank, which support a motor/gear unit for rotating an internal cleaning device of the tank.
  • This comprises a tube-like lance, which carries two crescent-shaped half-shells with slotted nozzles distributed along the peripheral edges and at the lower end a spray head with a nozzle slot and at the lower end agitator blades approximately in the longitudinal center.
  • slot-shaped openings are cut out in the wall of the lance.
  • the inner wall of the lance is smooth around the openings, as is the inner wall of the half-shells around the slotted nozzles.
  • the known tank has a conical top nozzle through which a lance is inserted, which is connected to a motor supported on top of the tank for driving rotation and which can be charged with a cleaning medium either from a hopper or via a pressure connection.
  • the lance has two spray heads with spray nozzles distributed over its length and a spray head with agitator blades at the lower end.
  • U.S. 3,856,579 A known tank truck with a top flange forming a manhole, a rotatable liquid/gas cleaning device that can be inserted for cleaning cycles is provided.
  • This consists of a lance which has separate channels for a main flow of liquid to nozzle heads that can be driven in rotation on the lance and for a main flow of gas to a gas nozzle arranged at the lower end of the lance.
  • the nozzles provided on the nozzle heads are designed in such a way that no turbulence occurs that could damage a focused jet.
  • a known oil tankers are built through several manholes in the top of the hull lances that serve different purposes.
  • One purpose is to clean the inside of the hull.
  • nozzles are drilled in the tubular lance, each of which is a simple bore in the wall of the lance.
  • nozzle inserts which are designed in the manner of Venturi nozzles, are fixed in bores in the wall of the lance.
  • U.S. 3,339,100 discloses a tank top according to the preamble of claim 1.
  • the object of the invention is to avoid the disadvantages of the solutions available on the market and to ensure reliable cleaning with a minimum number of bores in the lance despite the restricted space in the tank top.
  • a tank is also closed create, which is characterized by a low-cost tank top that can be reliably cleaned and is therefore low-maintenance.
  • the nozzle body is easy to manufacture and its wall thickness is not limited by the wall thickness of the lance, so that the bores can be designed as spray nozzles which support the formation of a broadly fanned out, powerful spray jet or spray cone.
  • the arrangement of surfaces provided in the nozzle body generates, for example in an annular space, ie at the entrance to the spray nozzles, a strong turbulence which is essential for fanning out the jets. Without this surface arrangement, a largely laminar flow would prevail in the annular space and the jet shape generated would be a largely bundled jet, despite the nozzle shape.
  • the combination of the spray nozzles and turbulent flow conditions at the spray nozzles thus creates a wide fanning out of the spray jets.
  • the spray jets thus intensively cover large areas with the cleaning medium, even in the cramped space conditions in the cross section of the tank top, so that reliable cleaning is ensured with a minimum number of spray nozzles. Furthermore, the turbulence in the spray nozzles reduces their throughput. Overall, the arrangement shown above leads to less cleaning agent consumption and more effective cleaning of the crosspiece and its internals.
  • the nozzle body has a passage in the center through which the cleaning medium can use approximately the full nominal width of the cleaning lance in the direction of the tank cleaning device or spray head.
  • the surface arrangement of the nozzle body expediently has an undercut annular space open to the interior of the nozzle body and, in the direction of the main flow, downstream of the annular space and adjoining this, a catch collar oriented approximately transversely to the direction of the main flow and slightly protruding compared to the inner diameter of the lance.
  • the catch collar is either designed with individual catch blades distributed in the circumferential direction, or is continuous in the circumferential direction.
  • the turbulence in the annular space can be influenced by the spacing between the catch blades, since the partial introduction of the main flow creates greater turbulence than a closed catch collar.
  • the spray nozzles can be arranged at the individual catching blades or in the intermediate distances between them, with the turbulence directly on the catching blade being smaller than in the region between the catching blades.
  • the opening cone of the spray jets can thus be optimally adapted to the requirements by the arrangement and size of the intermediate distances and the position of the spray nozzles relative to these. Furthermore, through the Intermediate distances only take up a small part of the nominal cross-section of the lance and thus have less influence on the flow in the direction of the cleaning device or spray head.
  • the tank features a cost-effective, efficiently cleaned, low-maintenance tank top.
  • the nozzle body can have an at least largely rotationally symmetrical cross section and be easy to produce. It is expediently an easy-to-use nozzle ring, e.g. made of metal. Alternatively it could be a connecting flange for the lance.
  • the spray nozzles are advantageously cone spray nozzles producing fanned out spray cones.
  • the spray nozzles are arranged in the nozzle body at different angles with respect to the axis of the lance in order to equally intensively clean the product-contact surfaces of fittings arranged in the tank top, the inner wall of the crosspiece and the outer wall of the lance.
  • the inner orifices of the spray nozzles should be within the annulus.
  • the spray nozzles widen outwards to release a widely fanned-out spray jet, eg approximately conically, preferably with a cone generating end following a radius, a straight cone generating end, or in that an inner cylindrical inner section is adjoined by an outer cone section.
  • the cross-section of the spray nozzles can optionally be different from a circular area, for example square, rectangular, oval, asymmetrical or the like.
  • the outer opening of the spray nozzle is approximately twice as large as the inner opening. In this way, among other things, spray jets can be achieved which have an opening angle of about 30° or more.
  • the annular space has a convexly rounded inner wall and the catching collar or each catching blade has an upper side which rises against the direction of the main flow, is preferably concavely curved and merges harmoniously into the inner wall of the annular space.
  • the spacings between regularly spaced catcher blades in the nozzle body can be greater than the circumferential extents of free catcher blade ends.
  • each catching blade can be approximately trapezoidal, preferably with concavely rounded flanks, which are converted into the intermediate distances or the inner diameter of the nozzle body.
  • the inner wall of the annular space seen in the direction of the main flow and in cross section, has a shorter initial section sloping outwards at an angle of slightly more than 90° with respect to the axis and a rounded subsequent section , Leading at an angle of about 45 ° inwards and in the direction of the catching collar, longer end section.
  • Cleaning medium branched off from the catch collar or the catch blades is guided along the end section against the direction of the main flow to the mouths of the spray nozzles and is backed up along the start section opposite the incoming main flow and pressed into the spray nozzles.
  • a rounded outer wall of the nozzle body forms a bulge protruding over the outside of the lance, which in the direction of the main flow has a bead with only slightly less than 90° outwardly sloping, shorter starting section and a rounded, subsequent, longer end section running inwards at about 45°.
  • cleaning medium adhering to the outside of the lance and flowing down under the force of gravity is guided around the bead without tearing off and is applied to the outside of the lance underneath.
  • the outside of the bead expediently runs approximately parallel to the inside wall of the annular space.
  • the nozzle body has upper and lower annular flanges with approximately the same wall thickness as the lance.
  • the nozzle body is inserted, preferably welded, with the annular flanges, for example, between separate sections of the lance.
  • At least some spray nozzles are inclined at such angles in and/or against the direction of the main flow that the respective spray jet or spray cone at least touches the outside of the lance or even touches it strikes at an acute angle.
  • a different design as a nozzle body is also conceivable, which does not have a circular shape but, for example, has the shape of a polygon. Such an arbitrary shape could be produced by casting, for example.
  • a rotationally symmetrical basic shape of the nozzle body is only the preferred design variant that is easiest to manufacture.
  • tank top T (or a tank dome fitting), which is mounted or can be mounted on the top of a tank 1, for example.
  • the tank 1 equipped with the tank top T is used, for example, in the food or beverage industry, especially in beverage bottling plants. used, whereby both the tank and the tank top T are cleaned on the inside in cleaning cycles.
  • the tank top T is mounted with an optional flange 2 over an opening 3 of the tank 1 and has, for example, a tubular cross piece 4 to which a vacuum valve 5, an overpressure safety valve 6 and a connection 7 for cleaning medium are attached.
  • the connection 7 is connected to the interior of the cross piece 4 via a U-tube 8 and contains, for example, a valve 111 in an intermediate piece 12.
  • a lance 9 installed approximately vertically in the crosspiece 4 is connected to the connection 7, which in the embodiment shown comprises, for example, an upper large-diameter section 9a and a lower small-diameter section 9b, which are connected via a funnel-shaped intermediate piece 10 and an inserted nozzle body R. which has a surface arrangement F.
  • Cleaning devices 211 e.g. as a spray head
  • for cleaning the interior of the tank 1 are attached to the lower section 9b and are supplied with cleaning medium which flows in the lance 9 in an approximately axial main stream.
  • Spray holes 11 are provided in the nozzle body R, which are aligned with the fittings installed on the tank top T, the inner wall of the cross piece 4 and the outer wall of the lance 9 and can be arranged at different angles with respect to the axis X of the lance 9 and the nozzle body R .
  • the nozzle body R is a nozzle ring R here, for example, and is integrated, e.g. welded, at least approximately coaxially into the lance 9, and is explained with reference to the further figures.
  • the nozzle body R has, e.g.
  • the nozzle body R designed as a nozzle ring has upper and lower coaxial annular flanges 13, the wall thickness of which corresponds approximately to the wall thickness of the lance 9, and between which a wall 17 forming an outwardly protruding bead 14 is provided, the wall thickness of which is greater than the wall thickness of the Ring flanges 13 and the lance 9, preferably about twice as large.
  • the surface arrangement F inside the nozzle ring R serves to create turbulent flow conditions in the area of the spray holes 11, which decisively influence the shape of the spray jets generated with the spray holes 11.
  • the spray holes 11 are formed in the nozzle ring R, for example as spray nozzles S, such as cone jet nozzles, in the wall 17 (cf. figure 5 ), the smaller inside and larger outside have mouths.
  • Each outboard orifice can be about twice the size of the inboard orifice.
  • the surface arrangement F comprises an annular space 15 that is open towards the inside of the nozzle ring and has a concavely rounded cross-section, as well as a catch collar 20 that adjoins the annular space 15 in the direction 19 of the main flow along the axis X.
  • the inner nozzle openings should be in the annular space 15.
  • the catch collar 20 is formed from individual catch blades 21 which are regularly distributed at intervals 22, but can, as indicated by dashed lines at 21' in FIG. 3, continue in the circumferential direction.
  • the catching blades 21 are in accordance with 3 approximately trapezoidal and have concavely rounded flanks 24 which run into the intermediate distances 22 or the inner diameter of the nozzle ring R.
  • Each catching blade 23 has an upper side 23 which rises counter to the direction 19 and which is preferably concavely rounded and harmoniously converted into an inner wall 16 of the annular space 15 .
  • the free ends of the catching blades 21 are preferably shorter in the circumferential direction than the intermediate distances 22.
  • the inner wall 16 of the annular space 15 has, seen in direction 19, a shorter initial section 16a, which slopes outwards at an angle of slightly less than 90° with respect to the axis X and is converted via a curve into a longer end section 16b, which is under at an angle of about 45° to the X-axis.
  • the cone spray nozzles S are mounted in the wall 17.
  • the bead 18 has an outer side 18 which runs approximately parallel to the contour of the inner wall 16 .
  • the upper annular flange 13 is adjoined by an initial section 18 which slopes outwards at an angle of more than 90° and which is rounded off into a longer end section 18b which is concavely rounded at about 45° and transferred into the lower annular flange 13 .
  • This contour (egg-shaped or drop-shaped) of the bead 18 ensures that cleaning medium flowing down along the outside of the lance 9 and the upper annular flange 13 adheres to the bead 18, is guided to the lower annular flange 13 and further onto the outer wall of the lance 9 and cleans it.
  • This cross-sectional concept is just one non-restrictable option.
  • FIG 5 shows a spray nozzle S designed as a conical jet nozzle, which supports a spray jet or spray cone K fanned out widely at an angle ⁇ in its formation.
  • the conical jet nozzle is configured rotationally symmetrically, for example, with a generating line 25 that is convexly curved, corresponding to a radius 26 .
  • the cone jet nozzle S could have a rectilinear generatrix, or a cylindrical inner section and a conical outer section.
  • the axis of this cone jet nozzle is inclined at an angle with respect to the axis X such that the widely fanned out spray jet or spray cone K at least touches the outer wall of the lance 9 or, as shown, hits it at an acute angle.
  • the cross section of the spray nozzle S could be out of round.
  • FIG 12 illustrates, as a non-limiting example, the ring of nozzles equipped with seven conical jet nozzles from which, during a cleaning cycle, the spray cones K shown, widely fanned out, emerge.
  • Three of the spray cones K are inclined so that they hit the top and the outside of the lance 9 and upper areas inside the tank top T of FIG 1 coat.
  • Three more spray cones K are inclined a little further outwards and, for example, on the vacuum valve 5 and the safety valve 6 and the like in 1 and directed to the inside of the crosspiece 4.
  • a spray cone K is directed downwards and outwards and aims, for example, at another fitting of the tank top T from FIG 1 .
  • the cramped space conditions in the tank top T i.e.
  • the widely spread spray cones K intensively brush large surface areas with cleaning medium, so that with a small number of spray nozzles S a optimal cleaning of the inside of the tank top T can be achieved. If necessary, at least one additional nozzle body R with the same or a different design is installed in the tank top T.
  • the conical jet nozzles S open, for example, vertically in the outside 18.
  • the surface arrangement F of the nozzle body R causes strong turbulence in the annular space 15, which results in the spray jets from the spray nozzles S being fanned out widely. From a spray nozzle S approximately in the middle between two catching blades 21, the strongest fanning out is generated, while the fanning out at a spray nozzle S directly above the catching blade 21 turns out to be weaker.
  • the turbulences generated by the surface arrangement F from the main stream flowing steadily to the spray head 211 at and in the spray nozzles S are combined with the nozzle cross-section are important for an optimal fanning out of the spray jets and also reduce the throughput through the spray nozzles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)
EP16788454.3A 2015-11-09 2016-10-11 Tanktop und tank Active EP3374101B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015119253.5A DE102015119253A1 (de) 2015-11-09 2015-11-09 Tanktop und Tank
PCT/EP2016/074260 WO2017080733A1 (de) 2015-11-09 2016-10-11 Tanktop und tank

Publications (2)

Publication Number Publication Date
EP3374101A1 EP3374101A1 (de) 2018-09-19
EP3374101B1 true EP3374101B1 (de) 2022-05-18

Family

ID=57211478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16788454.3A Active EP3374101B1 (de) 2015-11-09 2016-10-11 Tanktop und tank

Country Status (6)

Country Link
EP (1) EP3374101B1 (da)
CN (1) CN209035038U (da)
DE (1) DE102015119253A1 (da)
DK (1) DK3374101T3 (da)
PL (1) PL3374101T3 (da)
WO (1) WO2017080733A1 (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017103899U1 (de) * 2017-06-30 2018-10-02 Rudolf Caspary Whirlpoolsystem zur Würzeklärung bei einem Brauverfahren

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139100A (en) * 1962-01-29 1964-06-30 Andrew G Griparis Tank sprayer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182669A (en) * 1963-03-30 1965-05-11 Algonquin Shipping & Trading Combined tanker service unit
GB1193454A (en) * 1967-06-22 1970-06-03 Werner Machinery Company Apparatus for Washing the Interior of a Bulk Tank
US3856570A (en) * 1972-10-11 1974-12-24 Shell Oil Co Method and apparatus for cleaning the interior of industrial vessels by using rotating nozzle heads
DE2808176A1 (de) * 1978-02-25 1979-09-06 Tuchenhagen Fa Otto Verfahren zur innenreinigung von nahrungsmitteltanks
DE19951248C1 (de) * 1999-10-25 2000-11-16 Tuchenhagen Gmbh Vorrichtung zum Zuführen eines flüssigen Reinigungsmittels und zum Zu- und Abführen eines gasförmigen Mittels an einem Flüssigkeitstank, insbesondere Biertank

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139100A (en) * 1962-01-29 1964-06-30 Andrew G Griparis Tank sprayer

Also Published As

Publication number Publication date
WO2017080733A1 (de) 2017-05-18
EP3374101A1 (de) 2018-09-19
DK3374101T3 (da) 2022-08-15
DE102015119253A1 (de) 2017-05-11
CN209035038U (zh) 2019-06-28
PL3374101T3 (pl) 2022-11-21

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