US20240409307A1 - Container for storing and transporting aggressive media, in particular bromine - Google Patents

Container for storing and transporting aggressive media, in particular bromine Download PDF

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Publication number
US20240409307A1
US20240409307A1 US18/719,114 US202218719114A US2024409307A1 US 20240409307 A1 US20240409307 A1 US 20240409307A1 US 202218719114 A US202218719114 A US 202218719114A US 2024409307 A1 US2024409307 A1 US 2024409307A1
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US
United States
Prior art keywords
domed cover
nickel
sealing surface
nickel sealing
container
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.)
Pending
Application number
US18/719,114
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English (en)
Inventor
Oliver Blach
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.)
JL GOSLAR GmbH
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JL GOSLAR GmbH
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Publication date
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Assigned to JL GOSLAR GMBH reassignment JL GOSLAR GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Blach, Oliver
Publication of US20240409307A1 publication Critical patent/US20240409307A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/10—Manholes; Inspection openings; Covers therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/12—Large containers rigid specially adapted for transport
    • B65D88/128—Large containers rigid specially adapted for transport tank containers, i.e. containers provided with supporting devices for handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
    • B65D90/34—Venting means

Definitions

  • the present invention relates to a container for the transport and storage of aggressive contents, in particular bromine, as well as a domed cover for closing the container.
  • Bromine is extremely toxic and highly corrosive, making it a dangerous substance that requires special precautions for transport and storage.
  • bromine Since bromine has a strong corrosive effect against numerous materials and will corrode them, bromine can only be transported and stored in special containers.
  • bromine is stored in glass bottles or glass containers.
  • glass is fragile and is therefore only suitable for storage and transport in small quantities.
  • glass bottles must be specially protected against breakage during transport, which makes transport cumbersome and expensive.
  • bromine is transported in steel containers, which can have different volumes depending on the requirement.
  • the inner walls of these containers, including the cover, are lined with lead, as bromine would otherwise corrode the container shell.
  • Lead is chemically very resistant due to passivation and is resistant to numerous corrosive substances, including bromine.
  • CN 106809538 A proposes to replace the internal pipes of a conventional bromine tank, which are usually made of polytetrafluoroethylene, by steel pipes with an inner wall lining of lead.
  • DE 10 2012 109 015 B3 relates to a support structure for conventional bromine containers with lead coating, wherein, in particular, the cylindrical section of the container can be supported as stress-free as possible in order to prevent damage to the brittle passive layer of the lead coating, which forms the actual corrosion barrier.
  • Containers such as those used for transport, usually have a manhole, which allows a person to access the interior for maintenance and repair.
  • the manhole has a raised section, here also referred to as a “raised manhole connector” or simply “connector”, which protrudes over the container like a chimney.
  • the connector and thus the container can be sealed with a domed cover.
  • the domed cover is typically also designed as a carrier for the fittings used for filling, emptying and inspecting the container.
  • additional openings are typically provided in the domed cover for connecting the fittings attached to the domed cover to the inside of the container.
  • valves can be provided on the domed cover. Bromine can be filled and removed through these valves. Pressure can be raised there so that the bromine is extracted from the container via another valve.
  • a safety valve can also be provided that opens if the pressure inside the container accidentally rises above a critical value.
  • the containers are very durable, but the seal between the domed cover and the raised manhole connector as well as the domed cover and the openings and valves therein constitute a particularly critical area.
  • the coating of lead for sealing continues even on the sealing surfaces and the flanges.
  • the containers are coated with lead over the entire inner surface, including the inside of the domed cover and the sealing surfaces such as the contact surfaces of the domed cover on the connector and the valves on the domed cover.
  • the sealing surfaces are exposed to considerable contact pressure during operation in order to be able to fulfil their function.
  • the object of the present invention was to provide a solution with which the problem of creep and thus the insufficient sealing for conventional lead coated containers including domed covers can be solved in a simple and economical manner.
  • the solution should also be suitable for retrofitting existing containers that have been decommissioned, for example due to insufficient sealing in the sealing areas.
  • the problem described above is solved by replacing the lead coating of the sealing surfaces of the container and the domed cover with sealing surfaces made of nickel.
  • the principle according to the invention works equally well for small sealing surfaces, for example on valves, as well as for large sealing surfaces, for example on raised manholes or raised manhole connectors.
  • the sealing surfaces on the domed cover and raised manhole connector usually have an annular disk shape and enclose the mouth of the corresponding openings.
  • nickel sealing surface is made of nickel (also referred to here as “nickel sealing surface”).
  • this relates to the top side, the sealing surfaces facing the valves or other structures, if provided, and on the bottom side of the support surface of the domed cover on the connector or the fastening flange of the connector, and in the case of the connector, the corresponding counter-surface on which the sealing surface of the domed cover is positioned.
  • the present inventors have ascertained that nickel can be deposited in sufficient quantity and in the desired shape on the corresponding areas by deposition welding wherein a commercially available nickel wire can be used.
  • nickel sealing surfaces can be applied to the designated areas in custom shapes, so to speak, with almost no loss of material.
  • Another advantage is that if nickel sealing surfaces are made using deposition welding, a full-surface metallurgical connection is obtained between the nickel as the deposition material and the material of the underlying surface, such as the steel of the domed cover or raised manhole connector.
  • a prefabricated nickel ring is attached to a surface by welding a linear weld seam along the abutting edges of the components to be connected.
  • the sealing surfaces on the domed cover and connector are typically designed as an annular disk, as shown in the example in the attached figures.
  • the solution according to the invention can also be used to retrofit existing containers.
  • the containers can continue to be used by replacing the cover with a domed cover designed according to the invention.
  • an appropriately dimensioned additional flange which is equipped with the nickel sealing surface, is attached to the connector or a fastening flange at the upper end of the connector.
  • the application of the nickel sealing surface to the additional flange is also carried out by deposition welding.
  • the solution according to the invention can drastically improve the safety of the containers during operation. Leakage caused by creeping of lead can be ruled out. In addition, the repair effort can be significantly reduced and thus the service life of the containers can be significantly increased.
  • FIG. 1 a longitudinal section through a domed cover on a raised manhole connector, valve assembly on the domed cover and domed cover hood according to the prior art
  • FIG. 2 a top view of the domed cover and the valve assembly on the domed cover according to FIG. 1 ,
  • FIG. 3 a longitudinal section through the safety valve shown in FIG. 2 , including the associated domed cover section,
  • FIG. 4 a longitudinal section through a domed cover without coating and fittings
  • FIG. 5 the longitudinal section according to FIG. 4 with lead coating including sealing surfaces made of lead according to the prior art
  • FIG. 6 the longitudinal section according to FIG. 4 with nickel sealing surfaces and lead coating according to the invention
  • FIG. 7 a preliminary domed cover according to FIG. 6 with nickel sealing surfaces
  • FIG. 8 a longitudinal section through a raised manhole connector designed according to the invention
  • FIG. 9 a top view of the raised manhole connector according to FIG. 8 .
  • FIG. 10 a longitudinal section through a machined surface of a nickel sealing surface
  • FIG. 11 a longitudinal section through a raised manhole connector closed with a domed cover according to the invention for a container according to the invention, in longitudinal section,
  • FIG. 12 a longitudinal section through a raised manhole connector retrofitted according to the invention having an extension flange with a nickel sealing surface applied thereto, and
  • FIG. 13 an extension flange with a nickel sealing surface for retrofitting a conventional container.
  • the figures exemplarily relate to a tank container as is generally known for the storage and transport of contents, in particular aggressive contents.
  • the corresponding tank body is omitted, whereby the lower opening of the raised manhole connector is connected to the tank body via the manhole and forms a single unit.
  • FIG. 1 shows a raised manhole connector 1 according to the prior art.
  • the domed cover 1 is shown with valve assembly 4 , 5 , 6 in the closed state resting on a raised manhole connector 2 , whereby the domed cover 1 with valve assembly 4 , 5 , 6 is covered with a domed cover hood 3 , which serves to protect the valve assemblies 4 , 5 , 6 .
  • valves 4 , 5 , 6 can be seen, which are arranged in a row along the diameter of the domed cover 1 .
  • the center valve 4 is used for loading and unloading the container
  • the left valve 5 is used to introduce gas—usually dry air or nitrogen—to enable unloading
  • the right valve 6 is used for degassing during loading.
  • a surface layer of lead coating 8 On the bottom side of the domed cover 1 is a surface layer of lead coating 8 , the edge region of which forms a sealing surface that is assigned as a counter-surface to a sealing surface 10 on the raised manhole connector 2 .
  • the sealing surface 10 on the raised manhole connector 2 is part of the lead coating 9 of the raised manhole connector, which extends along the inner surface of the raised manhole connector 2 over the upper edge to the top of a fastening flange 25 , which is only indicated here, and forms the sealing surface 10 made of lead.
  • a seal 11 which is made of a plastic that is resistant to bromine, for example, polytetrafluoroethylene (PTFE), is typically provided between the sealing surface on the bottom side of the domed cover 1 and the sealing surface 10 on the raised manhole connector.
  • PTFE polytetrafluoroethylene
  • a series of through-holes 12 are provided for fastening elements, for example threaded bolts or the like, with which the domed cover 1 is fastened onto the raised manhole connector 2 .
  • the fastening elements are tightened firmly in order to obtain a tight seal. This exerts a high contact pressure on the sealing surfaces made of lead on the bottom side of the domed cover 1 and its counter-surface, the lead sealing surface 10 on the raised manhole connector 2 .
  • FIG. 2 shows a top view of the domed cover 1 according to FIG. 1 , wherein the structures on the bottom side of the dome cover including the upper opening 13 of the raised manhole connector 2 are also indicated.
  • Valves 4 , 5 , 6 are present on the top of the domed cover 1 as well as an additional valve 7 , which is a safety valve, and through-holes 12 with fastening elements, which are arranged at a distance from one another around the peripheral region of the domed cover 1 .
  • the individual circles indicate, from the inside to the outside, the opening 13 of the raised manhole connector 2 , the outer circumference 14 of the surface layer of lead coating 8 on the bottom side of the domed cover 1 , the outer circumference 15 of the domed cover 1 and the outer circumference 16 of the fastening flange 25 on the raised manhole connector 2 .
  • valves 4 , 5 , 6 and 7 The connections of the valves 4 , 5 , 6 and 7 to the domed cover 1 and thereby the container is shown in FIG. 3 using the example of the safety valve 7 .
  • a through-hole 17 is provided in the domed cover 1 at the designated position.
  • the lead layer 8 on the bottom side of the domed cover 1 extends to the inner wall of the through-hole 17 beyond the upper edge of the through-hole 17 and forms a sealing surface 18 made of lead around the through-hole 17 , on which the valve 7 is mounted.
  • blind holes 20 can be provided on the top side. of the dome cover 1 around the through-holes 17 and sealing surface 18 made of lead, into which suitable fastening means 21 can be inserted, for example conventional stud bolts, as shown in FIG. 3 .
  • FIG. 4 thereby shows a longitudinal section through a still uncoated domed cover 1 along the diameter with the three through-holes 17 for connecting the valves 4 , 5 , 6 .
  • blind holes 20 for fastening the valves 4 , 5 , 6 are present in the vicinity of the through-holes 17 for connecting the valves 4 , 5 , 6 and, along the peripheral region of the domed cover 1 , there are through-holes 12 for fastening elements for fastening the domed cover 1 to a raised manhole connector 2 .
  • FIG. 5 shows the domed cover 1 according to FIG. 4 with lead glazing according to the prior art, wherein the bottom side of the domed cover, the inner wall of the through-holes 17 and the sealing surfaces 18 around the through-holes 17 are coated with a continuous layer of lead 8 .
  • FIG. 6 as compared to FIG. 5 , a domed cover 1 designed according to the invention is seen.
  • the layer of lead 8 in the areas of the domed cover 1 that are subject to a significant pressure load, is replaced by nickel sealing surfaces 22 and 23 .
  • the lead coating on the top side of the domed cover 1 along the circumference of the through-holes 17 for connecting the valves is replaced by an annular disk-shaped nickel sealing surface 22 .
  • the desired nickel sealing surfaces 22 , 23 can be obtained easily with almost no loss of material. A full-surface metallurgical bond is created between the nickel sealing surface and the domed cover.
  • the through-holes 17 and the blind holes 20 for the valves, etc. are machined on the domed cover 1 .
  • the result is a preliminary domed cover as shown in FIG. 7 , with through-holes 17 for the valves, nickel sealing surfaces 22 along the upper circumference of the through-holes 17 and nickel sealing surface 23 on the bottom side of the domed cover along the section where the domed cover 1 comes in contact with a raised manhole connector 2 , as well as through-holes 12 for fastening elements for fastening the dome cover 1 onto the raised manhole connector 2 , and blind holes 20 for fastening elements for fastening the valves to the domed cover.
  • the lead coating 8 is applied in a conventional manner, with a surface layer of lead coating 8 being applied to the bottom side of the domed cover in the area surrounded by the nickel sealing surface 23 and extended along the inner surfaces of the through-holes 17 to the upper edge of the nickel sealing surfaces 22 , as shown in FIG. 6 .
  • the result is a domed cover 1 in which, according to the invention, in particular, the critical areas that are exposed to high contact pressure during operation are selectively provided with nickel sealing surfaces 22 , 23 .
  • nickel does not show any plastic deformation such as creep due to its high hardness even under high pressure.
  • the nickel sealing surfaces 22 , 23 retain their shape and thus their leak-proofness even under long periods of high pressure.
  • the lead sealing surface 10 is also replaced by a nickel sealing surface 24 on the raised manhole connector 2 , as shown in FIG. 8 , which depicts a longitudinal section through a raised manhole connector 2 .
  • a fastening flange 25 is provided on the upper opening of the raised manhole connector 2 , which runs around the circumference of the raised manhole connector 2 and protrudes beyond the circumference of the raised manhole connector 2 .
  • This projecting peripheral region of the fastening flange 25 is provided with through-holes 26 , which are arranged spaced apart from one another around the entire circumference and serve to fasten the domed cover 1 onto the raised manhole connector 2 .
  • the lead coating 9 extends from the upper edge of the nickel sealing surface 24 , down the inner wall of the raised manhole connector 2 , and along the inner wall of the container body (not shown).
  • FIG. 9 A top view of the raised manhole connector 2 with fastening flange 25 according to FIG. 8 is shown in FIG. 9 .
  • this top view three concentrically arranged ring-shaped areas can be seen.
  • the outer ring-shaped area 16 is the protruding peripheral area of the fastening flange 25 with the through-holes 26
  • the central ring-shaped area is the annular-disk-shaped nickel sealing surface 24
  • the inner ring-shaped area is the lead coating 9 .
  • the nickel sealing surface 23 on the bottom side of the domed cover 1 will lie on the nickel sealing surface 24 on the fastening flange 25 of the raised manhole connector 2 .
  • the nickel sealing surfaces 23 , 24 lie on top of one another, which, unlike the conventional lead coating, can withstand the pressure exerted by the adjacent additional component.
  • concentric grooves 27 can be provided on the top of the nickel sealing surfaces 22 , 23 , 24 , on which the plastic seals 11 , 19 are placed, so that the plastic seals 11 , 19 are pressed into the grooves 27 by the contact pressure, thus improving the fit and the tightness of the seal 11 , 19 and therefore the leak-proof capacity.
  • the manufacturing process takes place in such a way that the nickel coating on steel, in particular for the production of the sealing surfaces 22 , 23 and 24 , is carried out by deposition welding, and other metallic surfaces are connected by welding, for example between two steel surfaces, such as between the fastening flange 25 and the raised manhole connector 2 .
  • Lead and nickel or lead and steel are preferably connected by soldering.
  • welded connections between the individual components are marked in the figures, as per convention, by black, usually triangular areas x, e.g. in FIG. 8 between raised manhole connector and fastening flange 25 .
  • FIG. 11 The situation when a raised manhole connector 2 is closed with a domed cover 1 according to the invention is shown in FIG. 11 in longitudinal section.
  • the section again extends along the through-holes 17 for the three valves 4 , 5 , 6 , which are arranged along the diameter of the dome cover 1 . It can be clearly seen that the annular disk-shaped nickel sealing surface 23 on the bottom side of the dome cover 1 is mounted on the annular disk-shaped nickel sealing surface 24 on the fastening flange 25 of the raised manhole connector 2 . A plastic seal 11 is provided between the two annular disk-shaped nickel sealing surfaces 23 , 24 .
  • nickel sealing surfaces 22 are arranged on the top of the domed cover around the circumference of the through-holes 17 for the valve connection.
  • the remaining lead layer 8 extends here from the upper edge of the nickel sealing surfaces 22 , along the inner wall of the through-holes 17 for the valve structures to the bottom side of the domed cover and on the bottom side of the domed cover, to the nickel sealing surface 23 .
  • the thickness of the sealing surfaces 22 , 23 and 24 is 10 mm in each case.
  • the layer of lead 9 in the raised manhole connector extends from the upper edge of the nickel sealing surface 24 along the inner peripheral surface of the fastening flange 25 down into the raised manhole connector 2 and from there onto the inner wall of the corresponding container (not shown here).
  • Through-holes 12 , 26 for the fastening elements are provided in the peripheral regions of the domed cover 1 and fastening flange 25 that lie outside the nickel sealing surfaces 22 , 23 .
  • the core idea of the present invention lies in replacing the areas of the lead coating that are subject to contact pressure with corresponding nickel inserts or nickel sealing surfaces.
  • the present invention is not limited to the embodiments shown above in the figures for illustration purposes, but is also suitable for domed covers that have no through-holes, fewer through-holes or more through-holes for valve connections.
  • any other shape of nickel sealing surfaces can be used.
  • the dimensions of the nickel sealing surfaces can also be adapted to the requirements for the application of the container.
  • Another major advantage of the invention is that existing containers can also be easily retrofitted according to the invention. This means that containers that have been decommissioned due to the wearing off of the lead coating on the sealing surfaces and the associated insufficient sealing that arises can also be made fit for use again.
  • the retrofitting is exemplarily described with reference to FIGS. 12 and 13 .
  • FIG. 12 shows a longitudinal section through a raised manhole connector 2 that has been retrofitted according to the invention.
  • an extension flange 28 is attached to the existing fastening flange 25 , which is provided with the nickel sealing surface 24 .
  • extension flange 28 with nickel sealing surface 24 and through-holes 29 for fastening elements are adapted to the existing fastening flange 25 .
  • the old sealing surface made of lead 10 and lead coating 9 are first removed up to the interior of the raised manhole connector 2 .
  • extension flange 28 made of the same material is mounted on the existing fastening flange 25 , which has an annular disk-shaped nickel sealing surface 24 in the area of the sealing surface, for example, as shown in FIG. 5 , instead of the conventional lead sealing surface 10 , as shown in FIG. 13 .
  • the lead coating 9 is then recoated between the upper edge of the nickel sealing surface 24 down to the raised manhole connector 2 .
  • the nickel sealing surface 24 is advantageously attached to the surface of the extension flange 28 by means of deposition welding and the extension flange 28 is connected to the existing fastening flange 25 by means of welding.
  • the weld seam between the raised manhole connector 2 and the fastening flange 25 is, as is customary, identified by a black surface x.
  • a container retrofitted with a raised manhole connector 2 designed according to the invention can then be reused with a domed cover 1 according to the invention.
  • the present invention relates to containers, for example tank containers with raised manhole connector 2 and domed cover 1 , for closing the raised manhole connector 2 , these containers being coated with lead for the transport of aggressive contents, such as bromine, wherein the domed cover 1 and the raised manhole connector 2 have nickel sealing surfaces 22 , 23 , 24 , which are prepared, in particular, by means of deposition welding, as well as conventional containers that are retrofitted according to the invention as well as methods for this purpose.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
US18/719,114 2021-12-20 2022-12-13 Container for storing and transporting aggressive media, in particular bromine Pending US20240409307A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102021133841.7A DE102021133841B3 (de) 2021-12-20 2021-12-20 Behälter zum Lagern und Transportieren von aggressiven Medien, insbesondere Brom
DE102021133841.7 2021-12-20
PCT/EP2022/085603 WO2023117583A1 (de) 2021-12-20 2022-12-13 Behälter zum lagern und transportieren von aggressiven medien, insbesondere brom

Publications (1)

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US20240409307A1 true US20240409307A1 (en) 2024-12-12

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US18/719,114 Pending US20240409307A1 (en) 2021-12-20 2022-12-13 Container for storing and transporting aggressive media, in particular bromine

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US (1) US20240409307A1 (enExample)
EP (1) EP4452779A1 (enExample)
JP (1) JP2024547220A (enExample)
DE (1) DE102021133841B3 (enExample)
WO (1) WO2023117583A1 (enExample)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080302426A1 (en) * 2007-06-06 2008-12-11 Greg Patrick Mulligan System and method of securing removable components for distribution of fluids
US20150136778A1 (en) * 2013-11-15 2015-05-21 Opw-Engineered Systems, Inc. Inflatable hatch sealing device
US20210061553A1 (en) * 2019-09-03 2021-03-04 Jess D. Anderson Thief hatch assembly with improved seal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025839A1 (de) * 1990-05-31 1992-02-20 Erwin Bald Vorrichtung zum auffangen von leckagefluessigkeiten
US9429253B1 (en) * 2010-11-01 2016-08-30 John F. Vicknair System and method of securing an apparatus to an opening
CN202017827U (zh) 2011-03-02 2011-10-26 四川合力机电设备成套工程有限公司 电热浓缩槽槽盖专用管
DE102012109015B3 (de) 2012-09-25 2013-12-05 WEW Westerwälder Eisenwerk GmbH Tankcontainer
CN106809538A (zh) 2017-01-17 2017-06-09 常州大学 一种液溴罐式集装箱的内部接管方式

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080302426A1 (en) * 2007-06-06 2008-12-11 Greg Patrick Mulligan System and method of securing removable components for distribution of fluids
US20150136778A1 (en) * 2013-11-15 2015-05-21 Opw-Engineered Systems, Inc. Inflatable hatch sealing device
US20210061553A1 (en) * 2019-09-03 2021-03-04 Jess D. Anderson Thief hatch assembly with improved seal

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WO2023117583A1 (de) 2023-06-29
JP2024547220A (ja) 2024-12-26
EP4452779A1 (de) 2024-10-30
DE102021133841B3 (de) 2023-01-19

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