AU2015200728B2 - Sanitation equipment for a rail vehicle - Google Patents

Sanitation equipment for a rail vehicle Download PDF

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Publication number
AU2015200728B2
AU2015200728B2 AU2015200728A AU2015200728A AU2015200728B2 AU 2015200728 B2 AU2015200728 B2 AU 2015200728B2 AU 2015200728 A AU2015200728 A AU 2015200728A AU 2015200728 A AU2015200728 A AU 2015200728A AU 2015200728 B2 AU2015200728 B2 AU 2015200728B2
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AU
Australia
Prior art keywords
waste water
pipe
polyethylene pipe
fire protection
polyethylene
Prior art date
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AU2015200728A
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AU2015200728A1 (en
Inventor
Konstantin Belgorodski
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Siemens AG
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Siemens AG
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61DBODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D35/00Sanitation
    • B61D35/005Toilet facilities
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/2673Moulds with exchangeable mould parts, e.g. cassette moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/37Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
    • B29C45/376Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings adjustable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61DBODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D35/00Sanitation
    • B61D35/005Toilet facilities
    • B61D35/007Toilet facilities comprising toilet waste receiving, treatment, storage, disposal or removal devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
  • Thermal Insulation (AREA)

Abstract

SANITATION EQUIPMENT FOR A RAIL VEHICLE The invention relates to a sanitation facility (1) for a rail vehicle, in particular for a locomotive, comprising a toilet bowl and, connected to the latter, a waste water disposal line (5) which is composed of waste water pipes (51-56). According to the invention, a waste water pipe (51-56) comprises a polyethylene pipe (20) and a fire protection layer (30) sheathing the polyethylene pipe (20). As a result thereof the waste water pipe (51-56) is suitable on the one hand for conducting highly corrosive media, and on the other hand complies with the relevant fire protection standard for rail vehicles. 6s 5 53 9g 9 9 8 11 9 * 5 12 -- 62

Description

The invention relates to a sanitation facility (1) for a rail vehicle, in particular for a locomotive, comprising a toilet bowl and, connected to the latter, a waste water disposal line (5) which is composed of waste water pipes (51-56). According to the invention, a waste water pipe (51-56) comprises a polyethylene pipe (20) and a fire protection layer (30) sheathing the polyethylene pipe (20). As a result thereof the waste water pipe (51-56) is suitable on the one hand for conducting highly corrosive media, and on the other hand complies with the relevant fire protection standard for rail vehicles.
AH25(9689655_1):DJM
Figure AU2015200728B2_D0001
701520°17
2015200728 13 Feb 2015
SANITATION EQUIPMENT FOR A RAIL VEHICLE
DESCRIPTION [0001] The invention relates to a sanitation facility for a rail vehicle, in particular for a locomotive, according to the preamble of claim 1.
[0002] A sanitary or toilet module for rail-mounted vehicles that has a base plate determining the footprint outline and embodied as a one-piece GFR plastic element is known from the unexamined German patent application publication DE 10 2007 007 624 Al. The module has a toilet, a washing facility with associated paper and soap dispenser, as well as pipework and connecting pipelines that are connected to external supply and waste disposal pipelines by way of coupling elements.
[0003] The unexamined German patent application publication DE 10 2012 209 926 Al discloses a rail vehicle that is equipped with a waste water pipeline system. The waste water pipeline system comprises a waste water feed point that is formed by a hand washbasin, a sink, a dishwasher, a toilet or the like. The fed-in waste water passes into a collecting container which collects the waste water before the latter is siphoned off from outside by means of a valve that is connected to the collecting container. A first and a second intermediate container are conductively connected by pipelines between the collecting container and the waste water feed point. Each of the connecting lines is equipped with a pressure relief device at its upstream end and with a vacuum device at its downstream end.
[0004] It is known to use waste water pipes made of stainless steel for the waste water disposal lines. On the one hand, in particular the austenitic steel 1.4571 comprising the alloy components chromium, nickel and molybdenum possesses a high degree of corrosion resistance that is suitable for conveying the aggressive mix of feces and flushing water. On the other hand, stainless steel pipes satisfy currently applicable testing standards relating to preventive fire protection in rail vehicles, DIN 5510-2 being one example. A disadvantageous aspect of stainless steel pipes is that the corrosion resistance is stretched to its limits when conveying highly aggressive media such as hypochlorous acid, for example.
AH25(9689655_1):DJM
2015200728 01 Feb 2018 [0005] It would therefore be desirable to provide a generic sanitation facility/equipment having waste water pipes for conveying highly corrosive media and complying with the relevant fire protection standard for rail vehicles.
[0005a] It is an object of the present invention to substantially overcome one or more of the disadvantages of the prior art, or at least provide a useful alternative.
[0006] According to the present invention, a sanitation facility for a rail vehicle, in particular for a locomotive, comprises a toilet bowl and, connected to the latter, a waste water disposal line which is composed of waste water pipes. According to the invention, the waste water pipe comprises a polyethylene pipe and a fire protection layer sheathing the polyethylene pipe. In an embodiment, the sheathing fire protection layer covers the external pipe surface and protects the easily flammable polyethylene pipe in the event of the latter being impinged upon by flames from an external fire source. The polyethylene pipe itself is resistant to highly aggressive media and therefore can also conduct hypochlorous acid without this leading to material damage in the pipe wall of the waste water pipe. Polyethylene having highly branched polymer chains and a low density between 0.915 g/cm and 0.935 g/cm , or even linear low-density polyethylene with polymer chains having only short branches, may be used for example for the polyethylene pipe.
[0007] Preferably, however, the polyethylene pipe of the waste water pipe is formed from high-density polyethylene. Polyethylene having a high density between 0.94 g/cm and 0.97 g/cm has only weakly branched polymer chains. In addition to its high acid resistance, high-density polyethylene has a high modulus of elasticity of approximately 1 kN/mm . Polyethylene is very readily weldable and allows butted pipe connections having perfectly smooth welded joints. Negative effects of the junction on the flow characteristics of the waste water disposal line are avoided as a result, which proves an advantage in particular in the case of waste water disposal lines that are subject to pressure. Furthermore, the good weldability of polyethylene enables a waste water disposal line to be constructed in a small installation space, such space being available only to a very limited extent for a sanitation facility of a rail vehicle.
[0008] In an advantageous embodiment variant of the sanitation facility according to the invention, the fire protection layer is formed from an intumescent material which, as of a material-specific threshold temperature, produces a heat-insulating foam layer. The intumescent
14152232
2a
2015200728 01 Feb 2018 material can be formed for example by means of synthetic resins provided with a foaming agent and a flame-retarding means or by aqueous synthetic resin dispersions which when exposed to
14152232
2015200728 13 Feb 2015 heat - from 180 °C upward, for example - form a foam consisting of carbon. In this case the synthetic resin serves essentially as a carbon source. The carbon foam has a volume ten to one hundred times greater than the original thickness of the applied material. Owing to its very low thermal conductivity the foam protects the polyethylene pipe coated therewith against the action of flames.
[0009] Preferably, the intumescent material is applied to the polyethylene pipe in the form of a lacquer layer. This has the advantage that the material can easily be applied to any shape of the polyethylene pipe by means of brush, roller or sprayer machine. Because of this independence from the pipe geometry it is easily possible to provide both straight sections of pipe and pipe bends with a fire protection layer that is at least 1 mm thick.
[0010] Further preferably, an adhesive layer is arranged between the lacquer layer and the polyethylene pipe. In order to achieve an optimal adhesion of the fire protection layer on the polyethylene pipe, it is advantageous to prime the polyethylene pipe with an adhesive layer, for example 40 pm to 50 pm thick, before the lacquer layer is applied. The adhesive layer may be formed by the same material as the lacquer layer or by a different material. For example, the adhesive layer can be formed by means of a polyurethane-based two-component corrosioninhibiting and adhesion-promoting primer which is likewise applied by brush, roller or sprayer machine. Where appropriate, the polyethylene pipe can be roughened prior to application of the adhesive layer.
[0011] In a preferred embodiment of the sanitation facility according to the invention, the fire protection layer is formed by a carrier material made of mineral fiber which is coated with a heat-insulating silicone layer. With a layer thickness of 3.0 mm to 3.5 mm, said fire protection layer made of glass fiber and silicone withstands a constant temperature of up to 450 °C, briefly even temperatures up to max. 1100 °C.
[0012] Preferably, the coated carrier material is pulled over the polyethylene pipe as a sleeve. The sleeve can be fabricated by means of extrusion and in particular pulled over straight sections of pipe in order to provide the fire protection layer for the polyethylene pipe. Alternatively, the coated carrier material may also be embodied as a mat, which is then wrapped around the polyethylene pipe and fixed by means of a zip fastener or snap fastener.
AH25(9689655_1):DJM
2015200728 13 Feb 2015 [0013] Further characteristics and advantages of the invention will become apparent from the following description of actual exemplary embodiments with reference to the schematic drawings, in which:
[0014] FIG 1 [0015] FIG 2 [0016] FIG 3 [0017] FIG 4 shows a sanitation facility according to the invention for a locomotive in a perspective view from above, shows the sanitation facility according to FIG 1 in a perspective view from below, shows a cross-section through a waste water pipe of a first exemplary embodiment, and shows a cross-section through a waste water pipe of a second exemplary embodiment.
[0018] According to FIG 1 and FIG 2, a sanitation facility 1 for a locomotive comprises a base element 2 having a tray 3 that is arranged roughly centrally thereon and is open at the top. A toilet bowl (not shown) sits on the tray 3 in a pressure-sealed manner and in combination with the tray 3 forms a pressure chamber capable of withstanding a positive pressure of 4.5 bar. Excreta are flushed into the pressure chamber through a closable opening in the toilet bowl by means of water supplied via a first fresh water line 4. Connected to the tray 3 at the rear is a waste water disposal line 5 which serves for discharging the excreta-water mixture out of the pressure chamber by means of positive pressure. The waste water disposal line 5 comprises a first waste water pipe 51 which forms a siphon shortly after the tray 3 and leads along the base element 2 around a tank arrangement 6 while forming a 90° bend and which transitions vertically upward into a second waste water pipe 52 while forming a further 90° bend. The second waste water pipe 52 extends vertically upward and while forming a 90° bend at its upper end leads horizontally into a bacteria tank 61 of the tank arrangement 6. In the bacteria tank 61, bacteria cultures are supplied to the excreta-water mixture in order to decompose the latter. The at least partially decomposed excreta-water mixture is supplied via a third waste water pipe 53 to a chlorination tank 62 of the tank arrangement 6 that is arranged underneath the bacteria tank 61. A dispenser 7 for chlorine tablets which serves for the primary chlorination of the excretawater mixture is connected into the third waste water pipe 53. The prechlorinated excreta-water mixture is supplied close to the base to the chlorination tank 62, which serves for the secondary
AH25(9689655_1):DJM
2015200728 13 Feb 2015 chlorination and consequently for the disinfection of the excreta-water mixture. The chlorination tank 62 is subdivided by means of partitions 8 into adjacently disposed overflow chambers 9 and, as the excreta-water mixture passes through, provokes a successive deposition of coarse-matter decomposition products on the floors of the overflow chambers 9. In the top section of the last overflow chamber 9, the chlorination tank 62 has an outlet 10 to which a fourth waste water pipe 54 is connected. The fourth waste water pipe 54 passes vertically downward through the base element 2 while forming a 90° bend and leads there sideways into a fifth waste water pipe 55 embodied as a collecting cylinder. A sixth waste water pipe 56, which likewise leads sideways into the fifth waste water pipe 55 embodied as a collecting cylinder, is connected to the top section of the bacteria tank 61 and serves as a ventilation pipe through which gases being produced in the bacteria tank 61, such as methane and carbon dioxide, are discharged. Shortly above its passage through the base element 2, the substantially vertically extending sixth waste water pipe 56 is tapered in cross-section. The sanitation module 1 further comprises a washbasin 11 to which water can be supplied via a second fresh water line 12. The first fresh water line 4 and the second fresh water line 12 are fed from a fresh water tank 13.
Also arranged in proximity to the washbasin 11 are a soap dispenser 14 and a paper towel holder
15. A drainpipe 16 from the washbasin 11 for gray water and a drainpipe 17 from a floor opening 18 in the base element 2 for wet cleaning purposes also discharge into the fifth waste water pipe 55 embodied as a collecting cylinder.
[0019] According to the invention, one or more of the waste water pipes 51 to 56 of the waste water disposal line 5 according to FIG 3 and FIG 4 have a polyethylene pipe 20 as an internal structural component. The polyethylene pipe 20 is formed from high-density polyethylene PE100 having a wall thickness of, for example, 4.6 mm in order to be capable of conducting the highly aggressive, chlorinated excreta-water mixture. The high acid resistance of polyethylene also withstands hypochlorous acid. In order to comply with the fire protection standards required by railroad operators in spite of the use of this easily flammable pipe material, the polyethylene pipe 20 is sheathed by a fire protection layer 30 which prevents the polyethylene from bursting into flames in the event of an external fire source being present. In the exemplary embodiment shown in FIG 4, the fire protection layer 30 is formed from an intumescent material which, as of a material-specific threshold temperature of, for example, 180 °C, produces a heat-insulating foam layer. The material HENSOTHERM 7 KS from the company Rudolf Hensel GmbH, which is applied to the polyethylene pipe 20 in the form of a lacquer layer 31 having a thickness of at least 1 mm, has proved to be advantageous in this regard. In order to
AH25(9689655_1):DJM
2015200728 13 Feb 2015 promote bonding between the intumescent material and the polyethylene pipe 20, the latter is primed with a 40 pm to 50 pm thick adhesive layer 32 of HENSOGRUND 2K PU. In the exemplary embodiment shown in FIG 3, the fire protection layer 30 is formed by means of a sleeve-shaped carrier material 33 made of mineral fiber which is coated with a heat-insulating silicone layer 34. In this case the type 88 SC Flex fire protection sleeve from the company Hengstenberg GmbH, which is fabricated from a silicone-coated mineral fiber, has proven to be advantageous. The fire protection sleeve can be pulled over straight sections of pipe, though owing to its high flexibility it is also particularly well suited as a sleeving for curved pipe runs.
AH25(9689655_1):DJM
2015200728 01 Feb 2018

Claims (7)

1. A sanitation facility for a rail vehicle, in particular a locomotive, comprising a toilet bowl and, connected to the latter, a waste water disposal line which is composed of waste water pipes, wherein the waste water pipe comprises a polyethylene pipe and a fire protection layer sheathing the polyethylene pipe.
2. The sanitation facility as claimed in claim 1, wherein the polyethylene pipe is formed from high-density polyethylene.
3. The sanitation facility as claimed in claim 1 or 2, wherein the fire protection layer is formed from an intumescent material which, as of a material-specific threshold temperature, produces a foam layer.
4. The sanitation facility as claimed in claim 3, wherein the intumescent material is applied to the polyethylene pipe in the form of a lacquer layer.
5. The sanitation facility as claimed in claim 4, wherein an adhesive layer is arranged between the lacquer layer and the polyethylene pipe.
6. The sanitation facility as claimed in claim 1 or 2, wherein the fire protection layer is formed by a carrier material made of mineral fiber which is coated with a heat-insulating silicone layer.
7. The sanitation facility as claimed in claim 6, wherein the coated carrier material is pulled over the polyethylene pipe as a sleeve.
Siemens Aktiengesellschaft Patent Attorneys for the Applicant/Nominated Person SPRUSON & FERGUSON
14152232
7015200,7
2/3
2015200728 13 Feb 2015
FIG 2 !
3/3
2015200728 13 Feb 2015
FIG 4
AU2015200728A 2014-02-14 2015-02-13 Sanitation equipment for a rail vehicle Ceased AU2015200728B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014202750.0A DE102014202750A1 (en) 2014-02-14 2014-02-14 Sanitary device for a rail vehicle
DE102014202750.0 2014-02-14

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AU2015200728A1 AU2015200728A1 (en) 2015-09-03
AU2015200728B2 true AU2015200728B2 (en) 2018-02-22

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AU2015200728A Ceased AU2015200728B2 (en) 2014-02-14 2015-02-13 Sanitation equipment for a rail vehicle

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DE (2) DE202014010287U1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1481256A (en) * 1974-07-19 1977-07-27 Tarukawa T Refractory pipe fittings and production thereof
US5895569A (en) * 1996-01-05 1999-04-20 Connelly; Richard W. Small bore sewer system
US6247191B1 (en) * 1999-12-21 2001-06-19 General Electric Company Locomotive sanitation apparatus and method of protecting the same from freezing
US6625822B2 (en) * 2000-06-12 2003-09-30 Tecnicas Modulares E Industriales, S.A. Toilet with a modular vacuum flush system
US6959736B2 (en) * 2001-06-06 2005-11-01 Uponor Innovation Ab Multilayer pipe and method for manufacturing one
US20140005298A1 (en) * 2011-03-17 2014-01-02 Rudolf Hensel Gmbh Composition for an intumescent fire protection coating, fire protection coating, its use and manufacturing process for an intumescent fire protection coating

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004029716A1 (en) * 2004-06-21 2006-01-12 Immug Rohr + Schlauch Gmbh Railway Brake Hose
DE102007007624B4 (en) 2007-02-13 2008-10-30 Maschinenbau Und Service Gmbh Ammendorf Sanitary or toilet module, especially for vehicles
DE102012209926A1 (en) 2012-06-13 2013-12-19 Siemens Aktiengesellschaft Means of transport with a sewage system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1481256A (en) * 1974-07-19 1977-07-27 Tarukawa T Refractory pipe fittings and production thereof
US5895569A (en) * 1996-01-05 1999-04-20 Connelly; Richard W. Small bore sewer system
US6247191B1 (en) * 1999-12-21 2001-06-19 General Electric Company Locomotive sanitation apparatus and method of protecting the same from freezing
US6625822B2 (en) * 2000-06-12 2003-09-30 Tecnicas Modulares E Industriales, S.A. Toilet with a modular vacuum flush system
US6959736B2 (en) * 2001-06-06 2005-11-01 Uponor Innovation Ab Multilayer pipe and method for manufacturing one
US20140005298A1 (en) * 2011-03-17 2014-01-02 Rudolf Hensel Gmbh Composition for an intumescent fire protection coating, fire protection coating, its use and manufacturing process for an intumescent fire protection coating

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Publication number Publication date
AU2015200728A1 (en) 2015-09-03
DE202014010287U1 (en) 2015-06-17
DE102014202750A1 (en) 2015-08-20

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