WO2018208246A1 - Piping system for cryogenic product tanks - Google Patents

Piping system for cryogenic product tanks Download PDF

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Publication number
WO2018208246A1
WO2018208246A1 PCT/TR2017/050190 TR2017050190W WO2018208246A1 WO 2018208246 A1 WO2018208246 A1 WO 2018208246A1 TR 2017050190 W TR2017050190 W TR 2017050190W WO 2018208246 A1 WO2018208246 A1 WO 2018208246A1
Authority
WO
WIPO (PCT)
Prior art keywords
transfer pipes
gas transfer
cryogenic
central pipe
gas
Prior art date
Application number
PCT/TR2017/050190
Other languages
French (fr)
Inventor
Husnu Tolga EYYUBOGLU
Mustafa OZ
Original Assignee
Worthington Aritas Basincli Kaplar Sanayi Anonim Sirketi
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 Worthington Aritas Basincli Kaplar Sanayi Anonim Sirketi filed Critical Worthington Aritas Basincli Kaplar Sanayi Anonim Sirketi
Priority to PCT/TR2017/050190 priority Critical patent/WO2018208246A1/en
Publication of WO2018208246A1 publication Critical patent/WO2018208246A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F17C2205/0367—Arrangements in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/016—Noble gases (Ar, Kr, Xe)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/043—Localisation of the removal point in the gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/043—Localisation of the removal point in the gas
    • F17C2223/045—Localisation of the removal point in the gas with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/031—Dealing with losses due to heat transfer

Definitions

  • the invention relates to a piping system for use in tanks carrying cryogenic products.
  • the invention particularly relates to a piping system comprising a central pipe which compiles gas transfer pipes in the region wherein contact with cryogenic liquid will occur, intended to prevent the gas transfer pipes, through which gas phase product is carried, from contacting with cryogenic liquid and insulation pieces located between the said pipes, aimed at minimizing heat exchange.
  • Cryogenic tanks are utilized to carry and store liquid phase gases; liquefied natural gas (LNG), liquefied nitrogen, liquefied argon, liquefied oxygen.
  • LNG liquefied natural gas
  • 5% gas phase (LNG) and 2% air gas are included in the said tank to operate safely. This ratio is %2 for inflammable products (Nitrogen, Argon, etc.), and 5% for inflammable ones (LNG etc.).
  • the present invention relates to a piping system to be used in tanks which carry cryogenic products to eliminate the aforementioned disadvantages and to bring new advantages to the relevant technical field.
  • Primary object of the invention is to provide a piping system which prevents heat exchange between products carried in gas phase and liquid phase in cryogenic tanks. Thereby, back condensation is prevented and discharge of the gas is performed without any problems.
  • Another object of the invention is to provide a cryogenic tank piping system allowing the discharge of the gas carried in the pipes through the shortest route.
  • the pressure of the gas present within the tank needs to be lower than the set pressure of the release valve. Therefore, discharge of the gas in the pipes through the shortest route is of importance due to limited 3% pressure drop.
  • Another object of the invention is to provide a piping system which carries the pipes, carrying gas phase products, without contacting them directly to the liquid, by collecting the said pipes in a central pipe where the contact with the liquid is expected. Thereby, without any direct contact with the liquid, the risk of condensation is prevented. With the invention, it is intended to provide a piping system with less pressure drop. With the piping system provided by the invention, gas is transferred directly to safety valves.
  • insulation pieces located between pipes decrease back condensation by reducing heat exchange.
  • the piping system (S) of the invention comprises a central pipe (7), which compiles gas transfer pipes (4) carrying gas phase products within a cryogenic tank (1 ) carrying cryogenic liquid, in the region wherein contact with cryogenic liquid will occur, intended to prevent gas transfer pipes (4), through which gas phase product is carried, from contacting with cryogenic liquid and multiple insulation pieces (6) located between the said gas transfer pipes (4) and central pipe(7), aimed at minimizing heat exchange, a weld housing (5) located in the area wherein gas transfer pipes (4) are connected to the central pipe (7).
  • the said cryogenic liquid comprises of substances such as liquefied low temperature natural gas (LNG), Nitrogen (LIN), Argon (LAR) and Oxygen (LOX).
  • LNG liquefied low temperature natural gas
  • LIN Nitrogen
  • LAR Argon
  • LOX Oxygen
  • Gas transfer pipes (4) are pipes which carry gas phase fluids. Part of the said gas transfer pipes (4) are located within a central pipe (7) insulated from the cryogenic liquid, whereas the rest is located in the cryogenic tank interior (2) outside the central pipe (7). However, because gas transfer pipes (4) which are not located within the central pipe (7) are placed on the upper parts of the cryogenic tank (1 ), contact with the cryogenic liquid does not occur.
  • Pipe weld housing (5) is the piece which ensures welding and stabilization of the gas transfer pipes (4) on the central pipe (7).
  • the central pipe (7) is the structure which is in a vertical position according to the base of the cryogenic tank (1 ) within the cryogenic tank (1 ).
  • the element which is aimed at preventing the gas transfer pipes (4) from contacting with one another and the central pipe (7) is the insulation piece (6).
  • Said insulation piece (6) is constrained between the gas transfer pipes (4) so as to prevent the said gas transfer pipes (4) from contacting with one another.
  • insulation piece (6) is placed between the gas transfer pipes (4) and the inner surface of the central pipe (7). Thereby, heat exchange of the gas transfer pipes (4) between one another and the central pipe (7) is prevented.
  • Another aim of the said insulation piece (6) is to stabilize the said gas transfer pipes (4). In this sense, mechanical support to the piping system (S) is provided.
  • non-metal insulation pieces (6) can be utilized.
  • the length and the diameter of the gas transfer pipes (4) utilized in the piping system of the invention must be chosen to prevent a pressure drop of 3%.
  • Said gas transfer pipes (4) must be filled with pure gas as they transmits the stored energy to the safety valve, otherwise they can be obstructed by the liquid phase cryogenic liquid entering into the pipes or the gas which condensates in the gas transfer pipes (4). This prevents the discharge of the cryogenic tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention comprises a piping system (S) for use in cryogenic tanks (1) providing storage and/or transfer of cryogenic products, comprising multiple gas transfer pipes (4) aimed at carrying gas phase products, a central pipe (7) surrounding the said gas transfer pipes (4) to prevent the said gas transfer pipes (4) from contacting with the cryogenic liquid (3) within the said cryogenic tank (1), at least one insulation piece (6) placed between the said gas transfer pipes (4) to prevent the said gas transfer pipes (4) within the said central pipe (7) from contacting with one another, multiple insulation pieces (6) placed between the inner surface of the said central pipe (7) and the said gas transfer pipes (4) to prevent said central pipe (7) and the said gas transfer pipes (4) from contacting with each other and to stabilize the said gas transfer pipes (4).

Description

PIPING SYSTEM FOR CRYOGENIC PRODUCT TANKS TECHNICAL FIELD
The invention relates to a piping system for use in tanks carrying cryogenic products.
The invention particularly relates to a piping system comprising a central pipe which compiles gas transfer pipes in the region wherein contact with cryogenic liquid will occur, intended to prevent the gas transfer pipes, through which gas phase product is carried, from contacting with cryogenic liquid and insulation pieces located between the said pipes, aimed at minimizing heat exchange.
STATE OF THE ART
Cryogenic tanks are utilized to carry and store liquid phase gases; liquefied natural gas (LNG), liquefied nitrogen, liquefied argon, liquefied oxygen. In addition to the cryogenic liquid at a minimum temperature of -196 °C within the tank, 5% gas phase (LNG) and 2% air gas are included in the said tank to operate safely. This ratio is %2 for inflammable products (Nitrogen, Argon, etc.), and 5% for inflammable ones (LNG etc.). Forms of the piping system and the pressure tank are of great importance for the said products in gas and liquid forms to be carried and stored effectually.
In the tanks of the state of the art, pipes which carry gas phase products pass through the liquid phase. This contact of pipes carrying gas phase products results in heat exchange between the said liquid and gas two phases. Due to this undesired heat transfer, gas in the pipe liquefies by condensation and substances in the said gas phase are not able to discharge from the tank effectually. However, pipes with products in gas phase in cryogenic tanks must protrude out from the shortest route and without contacting the liquid phase to prevent the heat leakage that can create condensation of gas inside safety lines
As a result, there is need for an innovation and an improvement in the related field due to the aforementioned disadvantages and the insufficiency of present solutions about the subject. OBJECTS OF THE INVENTION The present invention relates to a piping system to be used in tanks which carry cryogenic products to eliminate the aforementioned disadvantages and to bring new advantages to the relevant technical field. Primary object of the invention is to provide a piping system which prevents heat exchange between products carried in gas phase and liquid phase in cryogenic tanks. Thereby, back condensation is prevented and discharge of the gas is performed without any problems.
Another object of the invention is to provide a cryogenic tank piping system allowing the discharge of the gas carried in the pipes through the shortest route. The pressure of the gas present within the tank needs to be lower than the set pressure of the release valve. Therefore, discharge of the gas in the pipes through the shortest route is of importance due to limited 3% pressure drop. Another object of the invention is to provide a piping system which carries the pipes, carrying gas phase products, without contacting them directly to the liquid, by collecting the said pipes in a central pipe where the contact with the liquid is expected. Thereby, without any direct contact with the liquid, the risk of condensation is prevented. With the invention, it is intended to provide a piping system with less pressure drop. With the piping system provided by the invention, gas is transferred directly to safety valves.
In the invention, insulation pieces located between pipes decrease back condensation by reducing heat exchange.
The structural and characteristic features and all the advantages of the invention will be clearly comprehensible by means of the following figures and the detailed description written by referring to those figures and thereby the assessment should be made by considering these figures and the detailed description.
FIGURES THAT WILL HELP UNDERSTANDING OF THE INVENTION
In Figure 1 , is given a schematic view of the cryogenic tank in the state of the art.
In Figure 2, is given the view of the cryogenic tank of the invention.
In Figure 3, is given the view of part of the cryogenic tank of the invention.
In Figure 4, is given a zoomed cross-sectional view of the central pipe included in the cryogenic tank of the invention. REFERENCE NUMBERS
S Piping System
1 Cryogenic Tank
2 Cryogenic Tank Interior
3 Cryogenic Liquid
4 Gas Transfer Pipes
5 Pipe Weld Housing
6 Insulation Piece
7 Central Pipe
DETAILED DESCRIPTION OF THE INVENTION In this detailed description, the preferred embodiments of the invention is described only for the purpose of better understanding and without inserting any restrictive effects.
The piping system (S) of the invention comprises a central pipe (7), which compiles gas transfer pipes (4) carrying gas phase products within a cryogenic tank (1 ) carrying cryogenic liquid, in the region wherein contact with cryogenic liquid will occur, intended to prevent gas transfer pipes (4), through which gas phase product is carried, from contacting with cryogenic liquid and multiple insulation pieces (6) located between the said gas transfer pipes (4) and central pipe(7), aimed at minimizing heat exchange, a weld housing (5) located in the area wherein gas transfer pipes (4) are connected to the central pipe (7).
The said cryogenic liquid comprises of substances such as liquefied low temperature natural gas (LNG), Nitrogen (LIN), Argon (LAR) and Oxygen (LOX).
Gas transfer pipes (4) are pipes which carry gas phase fluids. Part of the said gas transfer pipes (4) are located within a central pipe (7) insulated from the cryogenic liquid, whereas the rest is located in the cryogenic tank interior (2) outside the central pipe (7). However, because gas transfer pipes (4) which are not located within the central pipe (7) are placed on the upper parts of the cryogenic tank (1 ), contact with the cryogenic liquid does not occur. Pipe weld housing (5) is the piece which ensures welding and stabilization of the gas transfer pipes (4) on the central pipe (7). The central pipe (7) is the structure which is in a vertical position according to the base of the cryogenic tank (1 ) within the cryogenic tank (1 ). Within the said central pipe (7) whose outer surface is in contact with the cryogenic liquid, are located multiple gas transfer pipes (4) whose contact with one another and with the said central pipe (7) are prevented. Gas transfer pipes (4) which carry gas phase products inside do not contact with the cryogenic liquid thanks to the central pipe (7).
The element which is aimed at preventing the gas transfer pipes (4) from contacting with one another and the central pipe (7) is the insulation piece (6). Said insulation piece (6) is constrained between the gas transfer pipes (4) so as to prevent the said gas transfer pipes (4) from contacting with one another. Similarly, insulation piece (6) is placed between the gas transfer pipes (4) and the inner surface of the central pipe (7). Thereby, heat exchange of the gas transfer pipes (4) between one another and the central pipe (7) is prevented. Another aim of the said insulation piece (6) is to stabilize the said gas transfer pipes (4). In this sense, mechanical support to the piping system (S) is provided. In the invention, non-metal insulation pieces (6) can be utilized.
Cryogenic liquid within the cryogenic tank interior (2) at a minimum temperature of -196 °C evaporated depending on the amount of the temperature entering the cryogenic tank (1 ) and transforms into gas phase. There is a volume in cryogenic tanks (1 ) reserved for these liquids to evaporate and expand safely. Said volume must be discharged according to the conditions of the process and mechanical calculations. Pressure of the gas within the cryogenic tank (1 ) may be equal to the set pressure of the safety valve to be utilized in the maximum discharge.
The length and the diameter of the gas transfer pipes (4) utilized in the piping system of the invention must be chosen to prevent a pressure drop of 3%. Said gas transfer pipes (4) must be filled with pure gas as they transmits the stored energy to the safety valve, otherwise they can be obstructed by the liquid phase cryogenic liquid entering into the pipes or the gas which condensates in the gas transfer pipes (4). This prevents the discharge of the cryogenic tank.

Claims

1 . A piping system (S) comprising multiple gas transfer pipes (4) aimed at carrying gas phase products for use in cryogenic tanks (1 ) ensuring storage and/or transfer of cryogenic products, characterized in that; it comprises:
- a central pipe (7) enclosing the said gas transfer pipes (4) to prevent the said gas transfer pipes (4) from contacting with the cryogenic liquid (3) within the said cryogenic tank (1 ),
- at least one insulation piece (6) placed between the said gas transfer pipes (4) to prevent the gas transfer pipes (4) within the said central pipe (7) from contacting with one another,
- multiple insulation pieces (6) placed between the inner surface of the said central pipe (7) and the said gas transfer pipes (4) to prevent the said central pipe (7) and the said gas transfer pipes (4) from contacting with each other and to stabilize the said gas transfer pipes (4).
2. A piping system (S) according to claim 1 , characterized in that; it comprises a non- metal insulation piece (6).
3. A piping system (S) for cryogenic tanks according to claim 1 , characterized in that; the said cryogenic tank (1 ) comprises a central pipe (7) positioned vertically according to the base of the said cryogenic tank (1 ).
4. A piping system (S) for cryogenic tanks according to claim 1 , characterized in that; it comprises a pipe weld housing (5) to support the stabilization of the gas transfer pipes (4) in the area wherein the said gas transfer pipes (4) enter the central pipe (7).
5. A cryogenic tank (1 ), characterized in that; it comprises a piping system (S) according to claim 1 .
PCT/TR2017/050190 2017-05-12 2017-05-12 Piping system for cryogenic product tanks WO2018208246A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/TR2017/050190 WO2018208246A1 (en) 2017-05-12 2017-05-12 Piping system for cryogenic product tanks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2017/050190 WO2018208246A1 (en) 2017-05-12 2017-05-12 Piping system for cryogenic product tanks

Publications (1)

Publication Number Publication Date
WO2018208246A1 true WO2018208246A1 (en) 2018-11-15

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Country Status (1)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762447A (en) * 1970-05-25 1973-10-02 Philips Corp Cold-transporting apparatus
FR2239915A7 (en) * 1973-07-31 1975-02-28 Crenn Robert Liquefied hydrocarbon storage tank - with vapour press maintenance for continuous uniform feed at different points of consumption
US4036618A (en) * 1975-04-18 1977-07-19 Cryogenic Technology, Inc. Flexible cryogenic envelope
DE10060554A1 (en) * 2000-12-06 2002-06-20 Kraftanlagen Nukleartechnik Gm Thermal shield for liquid helium supply systems, especially for particle accelerator systems
US7600541B2 (en) * 2005-05-12 2009-10-13 Gm Global Technology Operations, Inc. Overfill protection for liquid hydrogen tank

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762447A (en) * 1970-05-25 1973-10-02 Philips Corp Cold-transporting apparatus
FR2239915A7 (en) * 1973-07-31 1975-02-28 Crenn Robert Liquefied hydrocarbon storage tank - with vapour press maintenance for continuous uniform feed at different points of consumption
US4036618A (en) * 1975-04-18 1977-07-19 Cryogenic Technology, Inc. Flexible cryogenic envelope
DE10060554A1 (en) * 2000-12-06 2002-06-20 Kraftanlagen Nukleartechnik Gm Thermal shield for liquid helium supply systems, especially for particle accelerator systems
US7600541B2 (en) * 2005-05-12 2009-10-13 Gm Global Technology Operations, Inc. Overfill protection for liquid hydrogen tank

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