EP0026934B1 - Vorrichtung zum Entleeren von Behältern - Google Patents

Vorrichtung zum Entleeren von Behältern Download PDF

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Publication number
EP0026934B1
EP0026934B1 EP19800106018 EP80106018A EP0026934B1 EP 0026934 B1 EP0026934 B1 EP 0026934B1 EP 19800106018 EP19800106018 EP 19800106018 EP 80106018 A EP80106018 A EP 80106018A EP 0026934 B1 EP0026934 B1 EP 0026934B1
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EP
European Patent Office
Prior art keywords
pressure
containers
gas
flow
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.)
Expired
Application number
EP19800106018
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German (de)
English (en)
French (fr)
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EP0026934A1 (de
Inventor
Helmut Meinass
Bernhard Volz
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Linde GmbH
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Linde GmbH
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Filing date
Publication date
Priority claimed from DE2940755A external-priority patent/DE2940755C2/de
Priority claimed from DE19803024251 external-priority patent/DE3024251A1/de
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP0026934A1 publication Critical patent/EP0026934A1/de
Application granted granted Critical
Publication of EP0026934B1 publication Critical patent/EP0026934B1/de
Expired legal-status Critical Current

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    • 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
    • F17C13/04—Arrangement or mounting of valves
    • F17C13/045—Automatic change-over switching assembly for bottled gas systems with two (or more) gas containers
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • 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
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
    • F17C2205/0142—Two or more vessels characterised by the presence of fluid connection between vessels bundled 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
    • 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
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • 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
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • 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
    • F17C2205/0338—Pressure regulators
    • 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
    • F17C2221/018—Acetylene
    • 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
    • F17C2223/03—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
    • 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
    • F17C2227/0114—Propulsion of the fluid with vacuum injectors, e.g. venturi
    • 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
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/041—Methods for emptying or filling vessel by vessel
    • F17C2227/042—Methods for emptying or filling vessel by vessel with change-over from one vessel to another
    • 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
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/046—Methods for emptying or filling by even emptying or filling
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0443—Flow or movement of content
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2562—Dividing and recombining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2564—Plural inflows
    • Y10T137/2567—Alternate or successive inflows
    • Y10T137/2569—Control by depletion of source

Definitions

  • the invention relates to a device for emptying containers, in which gas is stored under pressure, with two groups of containers, each of which is connected to a sampling line, with a first pressure regulator regulating a preferential flow and a second pressure regulator regulating a complementary flow, as well as a switching device. Via which a container group can be connected to either the first or second pressure regulator and the other container group to the other pressure regulator.
  • the gas content of acetylene cylinders can only be complete, i.e. H. down to the saturation quantity if the gas quantity withdrawn per unit of time is selected to be very low and the gas is expanded to a very low pressure (back pressure).
  • back pressure a very low pressure
  • usable gas remains in the bottles in addition to the saturation gas.
  • One reason for this is e.g. B. that the removal, adsorption and / or evaporation heat required for removal from the bottles cannot be introduced into the bottles sufficiently quickly.
  • a device for emptying containers in which liquefied gases are stored under low pressure is known from US Pat. No. 2,968,162.
  • Two container groups are used, of which only one container group is initially emptied. As soon as the pressure in the consumer line drops below a certain value, gas from this other group of containers is mixed with gas from the other group of containers in an amount to compensate for the lack of gas.
  • Acetylene is usually released at a pressure of 0.8 bar. This pressure level may fluctuate up or down by about 0.1 bar. In the known device, the case may now arise that it is not possible to supply acetylene at the constant pressure level mentioned above and on the other hand to extract gas essentially only from one group of containers as a preferential flow.
  • the invention is therefore based on the object of developing a device which enables extensive emptying of containers in which gas is stored under pressure in a solvent.
  • the containers supplying the preferential flow are exchanged for filled containers after emptying, the entire gas requirement being covered by the further containers at least for the duration of the exchange of the empty containers and now after the exchange full tanks, the complementary stream, the other tanks the preference stream is taken.
  • One container (or several containers connected to a common removal line) is initially largely emptied. If the gas can no longer be provided in an amount that meets the average gas requirement, the usable gas remaining in the containers, which can escape from the largely emptied containers but which is not sufficient to fully cover the requirement, can also be removed.
  • the expanded gas emerging from the largely emptied container as a preferential flow is only brought together with the gas emerging from the filled containers after it has been expanded to back pressure.
  • the amount of the gas removed from the filled containers and to be mixed with the gas of the largely empty container exactly covers the deficit that can no longer be removed from the largely empty container.
  • the outlet pressure is continuously recorded and influenced by comparing this value with a predetermined setpoint in the sense of an adjustment to the setpoint.
  • the pressure of the preference flow can be regulated according to a first setpoint and the pressure of the complementary current according to a second setpoint, the first setpoint corresponding to a higher pressure level than the second setpoint.
  • gas is primarily taken from the largely emptied container. As long as gas can be withdrawn from this container in an amount sufficient to maintain a back pressure corresponding to the first setpoint, no gas is withdrawn from the full containers. Once the back pressure, i.e. H. the pressure at which the gas is fed into the line network of the consumer drops below the pressure corresponding to the first setpoint, the pressure reducer in which the gas of the partially emptied container is expanded is constantly fully open.
  • gas is removed from the further containers, expanded and mixed with the gas from the partially emptied container in an amount sufficient to maintain a back pressure corresponding to the pressure level of the second setpoint.
  • the entire demand is met from the sum of the partial flows, the flow from the largely emptied containers, the preferential flow, slowly going towards 0 and the flow from the filled containers, the complementary flow, having to generate the total amount.
  • the remaining pressure of the gas in the container after the almost complete removal can be lower than the pressure level corresponding to the first setpoint.
  • a variant has proven to be advantageous in which the complementary flow is the preferential flow below a container pressure of the partially emptied containers, in which the gas is no longer withdrawn in the required quantity and / or the average pressure can be mixed.
  • the gas will only be taken from these containers.
  • the additional containers are switched on in such a way that the partially emptied containers are emptied primarily, while the other containers only cover the shortfall.
  • the partially emptied containers are no longer emptied up to a container pressure below which the required gas requirement can no longer be reliably met. Rather, these containers are only emptied to a pressure which lies between the pressure of the completely filled containers and the pressure at which the gas can no longer be withdrawn in the required amount and / or with the required pressure. Even at this pressure, a switch is made from a gas supply exclusively through the partially emptied containers to a supply through both groups of containers, the partially emptied containers preferably being emptied first, while further containers are only withdrawing gas when the gas supplied by the partially emptied containers is removed not enough. In this case, the preference stream is supplied from these containers, and the complementary stream supplementing the preference stream is supplied from the other containers.
  • the proposed device advantageously ensures a continuous gas supply, pressure drops in the supply line in particular being reliably avoided.
  • a sudden gas consumption could not be covered if the gas supply came from only one group of containers.
  • extreme consumption peaks can also be overcome.
  • H. a constant gas supply is guaranteed.
  • a container group must always be connected to the container group supplying the preference stream, so that a complementary stream can be taken from it in an amount to compensate for the deficit in the preference stream and admixed to it.
  • this measure leads to a reduction in the fluctuations in the supply pressure to be regulated.
  • the procedure also has an advantageous effect on the operational safety of a corresponding system.
  • liquid solvents can enter the removal line in addition to vapor.
  • dimethylformamide as a solvent z. B. that reacts chemically with elastomers, its exit from the bottles can lead to the destruction of seals, membranes or similar components. This danger exists particularly when gases are removed from full bottles and from bottles that had been filled with solvents shortly before.
  • filled containers supply the complementary stream. Since in this phase of emptying the basic gas requirement is covered by the preferential flow, the complementary flow thus only has to compensate for consumption peaks, only relatively small amounts of gas are removed from the filled containers. This advantageously leads to relatively low removal speeds, so that the escape of liquid solvent into the supply line can be largely avoided. As soon as these containers no longer supply the complementary stream, but rather the preferential stream, they are no longer completely filled, so that the risk of excessive leakage of liquid solvent is avoided.
  • gas as a preferential flow from containers as soon as the container pressure has reached a certain value.
  • this pressure must also coincide with the corresponding withdrawal time have at least a value of 1.5 bar, preferably more than 10 bar.
  • the gas is withdrawn as a preferential flow until the container pressure has dropped to a value y ⁇ 3 bar, preferably y ⁇ 1.5 bar. In this way, the containers can be emptied down to the temperature-dependent amount of remaining saturation gas without affecting the gas supply.
  • containers are connected to a sampling line in which a shut-off valve and an automatic pressure regulator are arranged, with further containers being connected to a further sampling line with a shut-off valve and an automatic pressure regulator which opens into the first sampling line.
  • a tap is arranged in each of the two sampling lines between the shut-off valve and the pressure regulator, a connecting line branching off with a further tap each between the shut-off valve and the tap, and in the direction of flow of the gases upstream of the pressure regulators into the other sampling line flows.
  • This device enables a constant gas extraction, whereby the setpoints once set do not have to be changed, since the gas from the partially emptied containers can always be fed into the extraction line, in which the pressure of the expanded gas, by suitable switching of the taps via one of the two connecting lines is regulated after the first target bet.
  • the associated extraction line is shut off and filled containers are connected.
  • all taps are advantageously connected to a switching device.
  • the switching device can also be switched by a pneumatic, hydraulic or electrical actuator.
  • the actuator can be controlled by means of compressed air depending on the forms in the sampling lines.
  • preference flow and complementary flow in pressure regulators with suitable characteristics i. H. suitable pre-pressure-back pressure correlations with the volume flow as a parameter, relaxed.
  • suitable characteristics i. H. suitable pre-pressure-back pressure correlations with the volume flow as a parameter, relaxed.
  • a combination of two pressure regulators has proven to be particularly suitable, in which the preferential flow is relaxed in a regulator with horizontal or rising characteristic curves, whereas the complementary flow is relaxed in a regulator with horizontal or falling characteristic curves (volume flow constant in each case).
  • a device contains a first container group 1 and a second container group 2. Both groups are each connected to an extraction line 3, 4. In each of these lines, a pressure measuring device 15, 16, a shut-off valve 5, 6, a tap 9, 10, an automatic quick-closing device 17, 18 and an automatically regulated pressure regulator 7, 8 are arranged in sequence. In the flow direction of the gas to be withdrawn after the pressure regulators, the two extraction lines 3, 4 open into a supply line 19 leading to the consumer, in which a flame arrester 20 and a further shut-off valve 21 are arranged.
  • the two sampling lines 3, 4 are via two connecting lines 13, 14, each branching off between the shut-off valve 5 or 6 and the tap 9 or 10, and into the respective other sampling line 4 or 3 between the tap 10 or 9 and the Quick-closing device 18 or 17 open, connected.
  • the complementary flow is mixed with the preferential flow below a container pressure of the partially emptied containers, in which the gas can no longer be removed in the average quantity and / or the average pressure required
  • the filled bottles 1 are first to be emptied will.
  • the shut-off valve 5 and the taps 11 and 12 are open, while the shut-off valve 6 and the taps 9 and 10 are closed.
  • Acetylene flows to the consumer via the extraction line 3, the connecting line 13 and the pressure regulator 8.
  • Acetylene can be removed from bottles 1 as long as the consumer can be supplied with a sufficient quantity and with sufficient pressure.
  • a - in this embodiment manual - switching device 22 is actuated, which opens the taps 9 and 10 and the cocks 11 and 12 closes.
  • the shut-off valve 6 is also opened at the same time. Acetylene from the bottles 1 now flows through the discharge line 3 and the tap 9 through the pressure regulator 7.
  • acetylene from the filled bottles 2 can now flow through the shut-off valve 6, the tap 10 and through the pressure regulator 8 to the consumer.
  • the pressure regulator 8 must be open.
  • the pressure regulator in which the gas is released from the high cylinder pressure (pre-pressure) to a constant low pressure (back pressure) only opens when the back pressure drops below a certain value that can be set on the pressure regulator. In the exemplary embodiment, this value should be 0.7 bar.
  • the pressure regulator 7 works analogously, but it opens at a slightly higher pressure level, for example at 0.8 bar.
  • acetylene only flows to the consumer via pressure regulator 7, since this pressure regulator opens when the back pressure has dropped below 0.8 bar. However, if the pressure in the consumer line drops below 0.7 bar, the pressure regulator 8 also opens and supplements the shortfall that bottles 1 can no longer deliver. Acetylene from bottles 1 therefore flows primarily to the consumer. If the pressure on the pressure gauge 15 of the acetylene removed from the bottles 1 drops below a certain value, e.g. B. 0.9 bar, tap 5 is closed and the empty bottles 1 exchanged for filled bottles. During this time, the consumer is supplied exclusively with acetylene from the bottles 2.
  • a certain value e.g. B. 0.9 bar
  • both container groups are also to be started at the beginning of the emptying.
  • B filled with acetylene under a pressure of 15 bar.
  • container group 1 should be emptied.
  • the shut-off valve 5 and the taps 11 and 12 are open, while the shut-off valve 6 and the taps 9 and 10 are closed.
  • the taps 9 and 10 must be opened via the switching device 22 and at the same time the taps 11 and 12 must be closed.
  • Shut-off valve 6 is also opened.
  • the gas of the container now flows to the supply line 19 after the shut-off valve via tap 9, quick-closing device 17 and pressure regulator 7
  • gas that has been removed from the second group of containers and expanded can be mixed in in an amount to compensate for the shortfall.
  • the admixture takes place via pressure regulator 8, which is regulated according to a target value below the target value of pressure regulator 7.
  • this setpoint should also correspond to a pressure level of 0.7 bar.
  • Pressure regulator 8 thus only opens when the back pressure drops below 0.7 bar.
  • small amounts of gas are removed from the containers 2 only for a short time. Only in the course of increasing emptying of the containers 1 is the gas requirement increasingly covered from the containers 2.
  • gas is preferably taken from the containers 1 (preferential flow) and supplemented by gas from the containers 2 (complementary flow).
  • the switching device 22 is actuated again and the taps 9, 10, 11 and 12 are switched via an axis. Then the taps 9 and 10 are closed and the taps 11 and 12 are opened.
  • the shut-off valve 5 the containers 1 are switched off by the supply system and exchanged for filled containers.
  • the gas requirement is covered from the containers of the second group.
  • the gas flows via the discharge line 4, shut-off valve 6, line 14, tap 12, quick-closing device 17 and pressure regulator 7 to the supply line 19.
  • the shut-off valve 5 is opened immediately after connecting new, filled containers to the removal line 3. In this way, the preferential flow is now taken from the containers 2, the complementary flow is taken from the newly connected containers, etc.
  • the indices k and p stand for complementary current and preference current, respectively.
  • the characteristic curves are lines of constant flow rate V.
  • the scale on which the back pressure is plotted in FIGS. 2 and 3 is the same in both figures.
  • the three lines V n , V 2 and V 1 on the right in the figure are three characteristic curves of the pressure regulator 7 through which the preference flow flows, while the three characteristic curves shown in the region of low back pressure (corresponding to the low setpoint) characterize the pressure regulator 8.
  • the pressure regulator 7 for the preference flow has characteristics such that the back pressure rises (falls) in a wide pressure range as the inlet pressure falls.
  • FIG. 4 a diagram corresponding to FIG. 3 shows a typical example of an ideal gas extraction in accordance with the last-described variant of the method according to the invention.
  • the term "ideal" means that characteristic pressure fluctuations are not shown. This is based on a situation in which container group 1 takes the preferential flow and container group 2 the complementary flow. The pressure in the containers 1 should no longer be the full container pressure, ie the pre-pressure p v ⁇ p b . The gas should be withdrawn in a quantity V n corresponding to the nominal output. This initial situation corresponds to point a. In the course of gas extraction, the tank pressure drops and thus the admission pressure according to the characteristic curve V n .
  • the back pressure p h initially increases somewhat in order to decrease after reaching a flat maximum.
  • the back pressure has dropped to a value p l , which corresponds to the setpoint of the pressure regulator 8 for the complementary current.
  • the preferential flow is supplemented by gas from the containers 2, ie by the complementary flow.
  • the amount of the preferential stream is now steadily decreasing.
  • the flow rate drops from V n to V 2 to practically V 1 (points c and d).
  • the containers of the first group are emptied to a final pressure y.
  • the amount of complementary electricity withdrawn from the containers per unit of time increases from V 1 (point e) via V 2 to V n (point f).
  • the taps 9 to 12 are switched over and the containers are exchanged for filled containers after the shut-off valve 5 has been closed.
  • the gas flows out of the containers 2 via the pressure regulator 7.
  • the back pressure p f changes to p a when the changeover occurs. in the same way, the containers 2 are now emptied and against filled containers ter exchanged.
  • FIG. 1 A pneumatically operated switching device is shown, in which an actuator 28 switches a four / two-way valve 24 when the pressure in the discharge line for the largely empty bottles has dropped below a certain pressure, for example 2 to 3 bar .
  • the compressed air is conducted via lines 25 and 26 to one of the two sides of a pneumatic cylinder 23, via which the changeover device 22 is actuated.
  • this state can be indicated by an acoustic or visual warning system 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP19800106018 1979-10-08 1980-10-04 Vorrichtung zum Entleeren von Behältern Expired EP0026934B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2940755A DE2940755C2 (de) 1979-10-08 1979-10-08 Vorrichtung zum Entleeren von Behältern
DE2940755 1979-10-08
DE19803024251 DE3024251A1 (de) 1980-06-27 1980-06-27 Verfahren und vorrichtung zum entleeren von behaeltern, in denen gas unter druck in einem loesungsmittel geloest gespeichert ist
DE3024251 1980-06-27

Publications (2)

Publication Number Publication Date
EP0026934A1 EP0026934A1 (de) 1981-04-15
EP0026934B1 true EP0026934B1 (de) 1984-07-18

Family

ID=25781410

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Application Number Title Priority Date Filing Date
EP19800106018 Expired EP0026934B1 (de) 1979-10-08 1980-10-04 Vorrichtung zum Entleeren von Behältern

Country Status (9)

Country Link
US (1) US4341234A (enrdf_load_stackoverflow)
EP (1) EP0026934B1 (enrdf_load_stackoverflow)
AU (1) AU534700B2 (enrdf_load_stackoverflow)
BR (1) BR8006432A (enrdf_load_stackoverflow)
DE (1) DE3068611D1 (enrdf_load_stackoverflow)
DK (1) DK423480A (enrdf_load_stackoverflow)
ES (1) ES8106049A1 (enrdf_load_stackoverflow)
GR (1) GR70687B (enrdf_load_stackoverflow)
NO (1) NO151797C (enrdf_load_stackoverflow)

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US4531558A (en) * 1983-04-13 1985-07-30 Michigan Consolidated Gas Co. Gaseous fuel refueling apparatus
US4523548A (en) * 1983-04-13 1985-06-18 Michigan Consolidated Gas Company Gaseous hydrocarbon fuel storage system and power plant for vehicles
US4930550A (en) * 1985-11-13 1990-06-05 Fuel Concepts, Inc. Gaseous fueled torch apparatus and fueling module therefor
US4776366A (en) * 1985-11-13 1988-10-11 Michigan Consolidated Gas Company Gaseous fueled torch apparatus and fueling module therefor
JPS6326500A (ja) * 1986-07-18 1988-02-04 Fujitsu Ltd 圧縮ガス容器系統自動切換装置
DE3733442A1 (de) * 1987-10-02 1989-04-13 Linde Ag Verfahren und vorrichtung zum entleeren von mit gas gefuellten behaeltern
US5025824A (en) * 1990-09-26 1991-06-25 Union Carbide Canada Limited Automatic changeover manifold
US5062443A (en) * 1990-09-26 1991-11-05 Union Carbide Canada Limited Automatic changeover manifold
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US6120606A (en) * 1998-06-26 2000-09-19 Acer Semiconductor Manufacturing Inc. Gas vent system for a vacuum chamber
US6263900B1 (en) 2000-02-17 2001-07-24 United States Filter Corporation Low capacity chlorine gas feed system
US6615861B2 (en) 2001-04-20 2003-09-09 Chart Inc. Liquid cylinder manifold system
US6763846B2 (en) * 2001-08-20 2004-07-20 United States Filter Corporation Fluid distribution device
FR2841890B1 (fr) * 2002-07-03 2004-08-06 Air Liquide Procede de vidage/remplissage sequentiel et cyclique d'un ensemble multi-reservoirs de stockage-alimentation en fluide et installation correspondante
FR2872562A1 (fr) * 2004-07-01 2006-01-06 Air Liquide Procede et dispositif pour fournir de l'acetylene pendant un pic de consommation
FR2918734A1 (fr) * 2007-07-09 2009-01-16 Air Liquide Procede de transfert d'un fluide a un poste utilisateur et centrale d'inversion mettant en oeuvre ce procede.
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JP5722186B2 (ja) * 2010-11-04 2015-05-20 大陽日酸株式会社 液化ガス供給方法
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US10386019B2 (en) 2013-03-15 2019-08-20 Southwire Company, Llc Flow control and gas metering process
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TWI809498B (zh) 2020-09-18 2023-07-21 美商慧盛材料美國責任有限公司 材料供應系統及使從氣體供應和分配系統分配的氣體的壓力變化實質上降低之方法

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Also Published As

Publication number Publication date
NO802984L (no) 1981-04-09
NO151797B (no) 1985-02-25
AU6305080A (en) 1981-04-16
DK423480A (da) 1981-04-09
ES495667A0 (es) 1981-07-01
BR8006432A (pt) 1981-04-14
ES8106049A1 (es) 1981-07-01
EP0026934A1 (de) 1981-04-15
DE3068611D1 (en) 1984-08-23
AU534700B2 (en) 1984-02-09
GR70687B (enrdf_load_stackoverflow) 1982-12-20
US4341234A (en) 1982-07-27
NO151797C (no) 1985-06-05

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