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
  • F17C13/126—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for large storage containers 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
  • F17C13/00—Details of vessels or of the filling or discharging of vessels
  • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
• • 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
  • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
• • 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
  • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
  • F17C2201/01—Shape
  • F17C2201/0128—Shape spherical or elliptical
• • 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
  • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
  • F17C2201/05—Size
  • F17C2201/052—Size large (>1000 m3)
• • 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
  • F17C2205/01—Mounting arrangements
  • F17C2205/0153—Details of mounting arrangements
  • F17C2205/018—Supporting feet
• • 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
• • 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
  • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
  • F17C2227/01—Propulsion of the fluid
  • F17C2227/0128—Propulsion of the fluid with pumps or compressors
  • F17C2227/0135—Pumps
• • 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
  • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
  • F17C2227/03—Heat exchange with the fluid
  • F17C2227/0302—Heat exchange with the fluid by heating

Definitions

• the invention relates to a method for the targeted pressurization of a for storage LPG container provided, in particular a stationary one Liquid gas container, the liquid gas container from a portable service station withdrawn from liquefied petroleum gas, this with the addition of heat by means of one in the service station heated heat carrier evaporates and is supplied to the liquefied gas container in gaseous form, and a device for performing the method.
• an acoustic emission test has proven to be an accompanying control of pneumatic pressure tests proved to be a particularly cheap alternative and ever larger Gained meaning.
• sound impulses emitted from the material are measured.
• the from defects in Pressure emission jacket emitted sound emission signals are characteristic and of distinguish clearly from those that occur when there are no defects.
• the Sound pulses are generated using sensitive probes on the surface of the pressure vessel are arranged, recorded, converted into electrical impulses and after a appropriate processing supplied to an evaluation electronics. Using statistical It is then possible to evaluate the pressure vessel as faulty or as in order to be classified.
• Mobile service stations i.e. on Trucks built pressure application devices used, these being mobile Service stations, however, are outside the safety zone of the LPG container have to be brought. Moving the mobile service station up is often possible close to the installation site of the LPG container to be tested due to the local Conditions not possible.
• the liquid gas removed from the liquid gas container must therefore transported over long distances using suitably long hose lines are used, piston compressors for the promotion of the vaporized gas will.
• the invention aims at avoiding these disadvantages and difficulties and presents itself the task of a procedure and a facility for performing the procedure create a pressure test of liquefied gas containers while avoiding a Water pressure test regardless of the outside temperature, especially regardless of seasonal temperatures.
• the mobile Service station no special regulations, such as Regulations for the transport of dangerous goods on the road.
• This object is achieved in a method of the type described in the introduction in that the heated heat transfer medium is more mobile and closer to the service station LPG tank is supplied as the service station positionable heat exchanger in which the liquid gas removed from the liquid gas container evaporates and the evaporated Liquid gas is fed to the liquid gas container, preferably using one natural gas cycle.
• LPG is a flammable gas, which is also heavier As air, the legal situation applicable in most countries places high demands on the Installation site and the protection zone to be observed (depending on the container size 5 to 10 m around the Liquid gas container). According to the invention, compliance with the protection zone can be carried out at the time the test can be maintained as there is a gas swing between the container and the service truck is no longer necessary.
• the mobile service station no longer has to Regulations for the transport of dangerous goods on the road comply with the previously used buffer containers for the intermediate storage of liquefied petroleum gas can be dispensed with.
• the for the operation of the heating system to heat the heat carrier required amount of gas can be provided from commercially available industrial gas cylinders, the transport of which Individual bottles do not fall within the scope of the regulation mentioned.
• the mobile heat exchangers are kept almost gas-free before and after tank testing, whereby a transport on the mobile service station without observing special Regulations can take place.
• Water is preferably used as the heat transfer medium in order to achieve a high energy level used at a temperature level in the range between 50 and 95 ° C, preferably - for low outside temperatures - to a temperature level in the range between 80 and 90 ° C, in particular heated to about 85 ° C.
• a fill level of the liquid gas is expedient inside the heat exchanger by pumping liquid gas from the liquid gas tank set, whereby the pumping process is activated or deactivated via a level measurement becomes.
• the service station outside the protection zone of the LPG container and the heat exchanger within the protective zone of the LPG container be positioned. This results in particularly short cable routes for the Gas oscillation.
• the method according to the invention is preferably prescribed by law periodic pressure tests with accompanying noise emission tests applied, etc. advantageous at low outside temperatures, especially at outside temperatures below of 10 ° C, especially below 5 ° C.
• a facility for performing or using the method with a portable, in particular mobile service station with a heating device for Heating a heat transfer medium, with a heat exchanger for heat transfer from Heat transfer medium for LPG, with supply and return lines for the heat transfer medium between the heating device and the heat exchanger, with a liquid gas line for supply of LPG from the LPG tank to the heat exchanger and a gas line to Supply of vaporized liquid gas from the heat exchanger to the liquid gas tank is characterized in that the supply and return lines between the heat exchanger and the heater have a long length and that the Heat exchanger can be easily removed from the service station and at a distance from it in position is feasible.
• the supply and return lines are suitably flexible, so that the Heat exchanger placed in a simple manner near the LPG tank can be.
• a liquid gas feed pump is expedient in the liquid gas line, preferably in explosion-proof design, provided, whereby the heat exchanger is advantageous Level probes is provided with the liquid gas feed pump for the purpose of activation or inactivation are coupled.
• a check valve is advantageously provided in the liquid gas line, this being expedient between the LPG feed pump and the confluence of the LPG line in the Heat exchanger is installed.
• Heating device for heating the heat transfer medium to a temperature between 50 and 95 ° C, preferably designed for a temperature between 80 and 90 ° C.
• the flow and return lines are advisable to avoid heat loss Heat-insulated, preferably as a double-chamber hose system.
• the mobile service station is advantageous with regard to regulations for transport dangerous goods arbitrarily designed.
• a stationary LPG container 1 to be checked is up to level 2 with LPG 3 filled.
• a mobile service station 9 - a service truck - is at a greater distance 10 from Liquid gas container 1, in any case outside the protective zone 11 of the liquid gas container 1, for Positioned to conduct a review.
• the service truck 9 is with one Hot water heater 12, the gas burners of one stationed at the service truck 9 Gas container 14, e.g. a gas bottle to be supplied.
• a sound emission measuring system 15 consisting of a signal acquisition system, a signal analysis system and a Signal evaluation system, arranged.
• This sound emission measuring system 15 is a Connecting line 16, which is designed as a simply shielded coaxial cable, with the Sound emission sensor 17, which is arranged on the liquid gas container 1, connected.
• the Sound emission sensor 17 is on the liquid gas container 1 by means of a magnetic holder attached and has a signal preamplifier 18.
• the connecting line 16 serves on the one hand to power the signal preamplifier and at the same time takes over the Signal transmission between the signal preamplifier 18 and the sound emission measuring system 15.
• a mobile heat exchanger 19 is in position in the immediate vicinity of the liquid gas container 1 brought.
• This mobile heat exchanger 19 is with the hot water 12 over a Flow 20 and return line 21 connected, which are heat-insulated, etc. preferably as a double-chamber hose system with internal hot water supply, what but is not shown in the drawing.
• the mobile heat exchanger 19 is on the one hand Liquid gas withdrawal to the liquid phase extraction valve 6 with a liquid gas line 22 and on the other hand with a gas line 23 for returning vaporized liquid gas with the Refueling valve 5 connected.
• liquid gas line 22 there is a liquid gas feed pump 24, expediently in explosion-proof design, provided that over two in height level probes 25, 26 lying one above the other - which are based on capacitive mode of operation - can be activated and deactivated.
• a check valve 27 provided so that the liquid gas 3 only in the direction of the mobile heat exchanger 19th can flow or the vaporized gas only via the gas line 23 in the Liquid gas container is recycled.
• the function of the facility is as follows: After the service truck 9 is brought close to the liquid gas container 1 - but outside the protection zone 11 thereof - the mobile heat exchanger 19 transported by the service truck 9 is moved as close as possible to the liquid gas container 1 by rolling up the flexibly designed supply and return lines 20 , 21 set up. If the mobile heat exchanger 19 is designed to be explosion-proof, the installation location is expediently chosen within the protective zone of the liquid gas container (as shown in the drawing), otherwise, just outside if the version is not explosion-proof.
• the hot water is over the Flow line 20 fed to the mobile heat exchanger 19 and via the return line 21 in turn promoted to the hot water spa.
• the mobile heat exchanger 19 is via the liquid gas line 22 by means of Liquid gas feed pump 24 Liquid gas at a level between the two level probes 25, 26 held.
• the vaporized liquid gas 3 flows through the gas line 23 and the open one Refueling valve 5 in the LPG container 1, etc. taking advantage of a natural Gas cycle, i.e. without using a feed pump, such as a piston compressor.
• the Evaporated gas flowing into the liquid gas container 1 causes an increase in temperature of the LPG container, which increases the pressure in the LPG container in the same way.
• a Backflow of liquid gas via the liquid gas lines 22 and 7 into the liquid gas container 1 is avoided by the check valve 27.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Filling Or Discharging Of Gas Storage Vessels (AREA)
• Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Priority Applications (4)

Applications Claiming Priority (1)

Publications (2)

Family

ID=8218701

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (3)

Family Cites Families (2)

• 1994
  • 1994-02-15 DE DE59405956T patent/DE59405956D1/de not_active Expired - Fee Related
  • 1994-02-15 EP EP94890038A patent/EP0667484B1/de not_active Expired - Lifetime
  • 1994-02-15 AT AT94890038T patent/ATE166146T1/de not_active IP Right Cessation
  • 1994-02-15 DK DK94890038T patent/DK0667484T3/da active

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