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
  • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
  • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
  • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
  • F17D3/00—Arrangements for supervising or controlling working operations
  • F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
• • 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
  • F17C2201/0104—Shape cylindrical
  • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
• • 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
  • F17C2201/03—Orientation
  • F17C2201/032—Orientation with substantially vertical main axis
• • 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
  • F17C2201/054—Size medium (>1 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
  • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
  • F17C2201/05—Size
  • F17C2201/056—Small (<1 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
  • F17C2203/00—Vessel construction, in particular walls or details thereof
  • F17C2203/03—Thermal insulations
• • 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
  • F17C2221/013—Carbone dioxide
• • 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
  • 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
  • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
  • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
  • F17C2225/0107—Single phase
  • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
• • 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
  • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
  • F17C2227/0311—Air heating
• • 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
  • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
  • F17C2227/0316—Water heating
• • 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
  • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
  • F17C2227/0323—Heat exchange with the fluid by heating using another fluid in a closed loop
• • 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
  • F17C2227/0337—Heat exchange with the fluid by cooling
  • F17C2227/0339—Heat exchange with the fluid by cooling using the same fluid
• • 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
  • F17C2250/0439—Temperature
• • 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
  • F17C2250/0631—Temperature
• • 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
  • F17C2265/00—Effects achieved by gas storage or gas handling
  • F17C2265/02—Mixing fluids
  • F17C2265/022—Mixing fluids identical fluid

Definitions

• the invention relates to a device for generating a temperature-controlled, cold gas flow, with a storage tank for storing cryogenic liquefied gas and an extraction line connected to the storage tank for removing liquefied gas from the storage tank and with an evaporator unit integrated in the extraction line, which has a heat exchanger surface is equipped with a heat transfer fluid for the indirect thermal contact of the liquefied gas.
• the invention also relates to a corresponding method.
• Air-heated evaporators have the disadvantage that ice formations occur, especially in the event of unfavorable weather conditions and / or heavy loads, which can significantly impair the functionality of the evaporator.
• heat exchangers can also be used in which the liquid medium comes into indirect thermal contact with a heat transfer fluid and evaporates while the heat transfer medium cools down.
• heat exchangers are designed, for example, as tubular heat exchangers or as cooling coils.
• a process fluid can also be used as the heat transfer fluid in the heat exchangers, which occurs as a warm medium in the course of an industrial process and has to be cooled to a lower working temperature before further use.
• the present invention relates to such heat transfer fluids.
• it is a hot product stream or a cooling medium, in particular cooling water, which is guided in a cooling circuit using a refrigeration system, which in this way is at least relieved by the evaporation of the cryogenic medium.
• the use of such heat transfer fluids for evaporating cryogenic media has proven itself. It at least partially saves the user the separate cooling of the heat transfer fluid to its working temperature and / or the problems mentioned above when using an air-heated evaporator.
• the carbon dioxide used for this is usually made available in low-pressure or medium-pressure tanks in a cold, liquefied state and evaporated before being fed to the drink or water. In such cases, it has hitherto been refrained from using a heat transfer fluid with strongly fluctuating heat content to evaporate the carbon dioxide. In addition, an expensive additional device for temperature control of the carbon dioxide gas is required.
• the invention is therefore based on the object of specifying a possibility for providing a cold, precisely tempered gas flow from the evaporation of a cryogenic, liquefied gas, in which evaporation-related temperature fluctuations are compensated.
• a device is thus characterized in that a liquid line from the extraction line, downstream to the storage tank and upstream to the evaporator unit branches off, which opens into the extraction line downstream of the evaporator unit at an inlet device, the inlet device being equipped with a measuring device for detecting the temperature in the extraction line downstream of the evaporator unit and with a control valve that is operatively connected to the measuring device for regulating the inlet of liquefied gas into the extraction line .
• the temperature at the measuring device can be recorded upstream or downstream of the feed device.
• the device according to the invention enables the provision of a cold gas flow with high temperature stability.
• the heat transfer fluid is, for example, a cooling medium from a cooling circuit, such as cooling water.
• the heat transfer fluid flows from a process cooler to a cooling device which, in addition to the evaporator unit of the device according to the invention, preferably comprises a refrigeration machine in which the heat introduced into the heat transfer fluid by the process cooler is partially dissipated.
• the evaporator unit thus relieves the refrigeration machine or can also replace it, for example in the event of a temporary failure of the refrigeration machine or if the heat input from the cooling medium does not result in an undesirably high heating of the gas beyond the evaporation of the liquefied gas.
• the entry device comprises an end section of the liquid line which is equipped with a spray nozzle or a sintered body and protrudes into the interior of the extraction line.
• the liquefied gas flows from the liquid line into the spray nozzle or the sintered body and is finely dispersed and sprayed into the gas passed through the extraction line. There it is distributed in the gas flow and evaporates quickly.
• a fine-pored one that is mounted on the end section of the liquid line and made of metal or ceramic is particularly suitable Sintered body, through the openings of which the liquefied gas is introduced into the surrounding gas flow.
• the end section of the liquid line is preferably oriented within the withdrawal line in such a way that the liquefied gas flows in countercurrent to the vaporized gas in the withdrawal line.
• the end section of the liquid line is thus arranged, for example, concentrically in the interior of the extraction line and, with its mouth opening at which the spray nozzle or the sintered body is arranged, faces the gas flow in the extraction line.
• the evaporator unit comprises a heat exchanger for thermally contacting the liquefied gas with the heat transfer fluid as well as an air evaporator arranged parallel to the heat exchanger and a switching arrangement for the controlled connection and disconnection of the heat exchanger and / or air evaporator.
• the air evaporator is used in particular when the heat input via the heat transfer fluid is insufficient to completely evaporate the liquefied gas passed through the evaporator unit.
• a corresponding control circuit that measures the temperature of the vaporized gas in the extraction line downstream of the vaporiser unit (but upstream of the entry unit of the liquefied gas) and switches on the air vaporizer when the temperature falls below a specified value, so that at least a partial flow of the liquefied gas overflows the air evaporator is performed.
• the temperature value of the vaporized gas which should not be undercut, is above the temperature that the vaporized gas should have in a consumer connected to the extraction line (hereinafter referred to as the "determination temperature"), thus due to the subsequent supply of the liquefied gas the entry unit, the determination temperature can be set precisely.
• the cryogenic liquefied gas stored in the storage tank is preferably a liquefied air gas, such as liquid nitrogen, liquid oxygen or liquid argon, or liquid carbon dioxide.
• a method for generating a temperature-controlled, cold gas flow in which cryogenic liquefied gas is taken from a storage tank, evaporated in an evaporator unit by indirect heat exchange with a heat transfer fluid to form a flow of evaporated gas and the flow of evaporated gas is fed to a consumer, is characterized according to the invention in that Liquefied gas is fed from the storage container into the flow of the vaporized gas at an entry device downstream of the vaporiser unit, the amount of the liquefied gas supplied being regulated as a function of a temperature of the vaporized gas.
• the amount of liquefied gas fed in at the feed device is expediently regulated as a function of the determination temperature at which the gas should be present at the consumer.
• the gas already evaporated in the evaporator unit is tempered by a temperature-controlled supply of liquefied gas from the storage tank and supplied to a consumer, for example a device for carbonating beverages, at a precisely defined temperature.
• a consumer for example a device for carbonating beverages
• the preferred use of the device according to the invention or the method according to the invention is the generation of a temperature-controlled, cold gas stream in a process in the food industry, in particular for use in a device for carbonating beverages and / or for inerting products, packaging or containers.
• This device or devices is / are downstream of the device according to the invention as a consumer and connected to the extraction line, downstream of the input device for the liquefied gas.
• the gas stream to be tempered is preferably nitrogen or carbon dioxide.
• Fig. 1 The circuit diagram of a device according to the invention.
• FIG. 2 An entry system for liquefied gas of the device according to the invention from FIG. 1 in longitudinal section
• the device 1 shown in FIG. 1 is used to generate a temperature-controlled cold gas flow, as is used in particular in the food industry, for example in the carbonization of beverages or the inertization of food products.
• the evaporated carbon dioxide is fed to a beverage and at least partially dissolved in it.
• the desired or achievable degree of carbonation depends, among other things, on the temperature of the gas supplied and therefore requires uniform temperature control of the gas flow in production.
• the device 1 comprises a thermally well insulated storage tank 2 for a cryogenic liquefied gas, for example for liquid nitrogen or liquid carbon dioxide. Liquefied gas is withdrawn from storage tank 2 via a withdrawal line 3 and fed to an evaporator unit 4.
• a cryogenic liquefied gas for example for liquid nitrogen or liquid carbon dioxide.
• the evaporator unit 4 comprises a heat exchanger 5 in which the liquefied gas comes into indirect thermal contact with a heat transfer fluid and evaporates in the process.
• the heat transfer fluid is preferably cooling water or some other medium that has to be cooled anyway in the course of an industrial process and whose excess heat can advantageously be used to evaporate the liquefied gas.
• the heat transfer fluid is a cooling medium that is guided in a cooling circuit 6. The cooling medium passes through a process cooler 7, a refrigeration machine 8 and the heat exchanger 5 one after the other.
• the heat exchanger 5 thus primarily serves to support the refrigeration machine 8, which otherwise takes over the majority of the cooling of the heat transfer fluid heated in the process cooler 7; In the context of the invention, however, it is not excluded that the heat exchanger regularly or in the event of a failure of the refrigeration machine 6, its role in the cooling circuit 6 takes over completely.
• the heat transfer fluid of the cooling circuit 6 comes into indirect thermal contact at a heat exchanger surface 9 with the liquefied gas from the storage tank 2 brought in via the part of the extraction line 3 on the upstream side to the heat exchanger 5 Heat exchanger 5 on the downstream side of the extraction line 3.
• the evaporator unit 4 in the exemplary embodiment shown here has an air evaporator 10 arranged parallel to the heat exchanger 5.
• a control valve 11 controls the flow of the liquefied gas into the heat exchanger 5 and / or the air evaporator 10 as a function of a parameter which is measured at a sensor 12 in a section of the extraction line 3 downstream of the heat exchanger 5 and which is in particular the Temperature or the consistency of the gas in this section of the extraction line 3 is concerned. For example, if the temperature of the gas at the sensor 12 falls below a predetermined value, the flow of the liquefied gas is wholly or partially passed through the air evaporator 10 in order to ensure complete evaporation of the gas.
• a liquid line 13 branches off from the extraction line 3, downstream of the storage tank 2, but upstream of the evaporator unit 4, which opens again into the extraction line 3 at an inlet device 15, which is described in more detail below, downstream of the evaporator unit 4.
• the liquid line 13 is equipped with a control valve 16 which, depending on a parameter measured by a measuring device 17 downstream of the inlet device 15 in the extraction line 3, in particular the temperature of the vaporized gas, evaporated the inflow of liquefied gas into the flow through the extraction line 3 Gas regulates.
• the measuring device 17 can also be upstream of the Entry device 15 can be arranged on the extraction line, but downstream of the evaporator unit 4.
• liquefied gas is withdrawn from the storage tank 2, evaporated in the evaporator unit 4 and fed to its intended use in a consumer 14 connected to the withdrawal line downstream of the entry device 15.
• the consumer 14 is a device for carbonating beverages.
• it is necessary that the gas in the consumer reaches the consumer 14 at a temperature (determination temperature) that is as precisely defined as possible.
• the amount of heat introduced into the evaporated gas via the heat exchanger 5 and / or the air evaporator 10 is not always sufficiently constant and can fluctuate over time.
• the amount of heat introduced via the air evaporator 10 depends in particular on atmospheric factors, such as ambient temperature, ambient pressure or air humidity, which make it difficult or even impossible to set the temperature of the evaporated gas in the extraction line precisely.
• the temperature of the vaporized gas in the extraction line 3 upstream of the inlet device 15 is therefore dependent on the ambient temperature or the temperature of the cooling medium, depending on whether the gas flow at the control valve 11 is routed via the air evaporator 10 or the heat exchanger 5. In any case, it should be above the determination temperature of the gas.
• liquefied gas is introduced directly into the vaporized gas in the extraction line 3 at the inlet device 15 and preferably cools it down to the determination temperature.
• the temperature of the control valve 16 By regulating the temperature of the control valve 16, this is possible with high precision; the device 1 thus enables very precise temperature control of the vaporized gas in the extraction line 3 before it is supplied to the consumer 14.
• a particularly advantageous entry system 15 of the device 1 according to the invention is shown.
• the entry system 15 is in the extraction line 3, downstream to the evaporator unit 4, arranged. It comprises an L-shaped bent end section 18 of the liquid line 13, one leg of which is arranged inside, preferably concentrically, in the extraction line 3 and has an orifice 20 directed against the direction of flow of the vaporized gas in the extraction line 3 indicated by arrow 19.
• a diffuser for example a spray nozzle or a sintered body 21 made of metal or ceramic, is mounted on the mouth opening 20 and leads to a very fine distribution of the liquefied gas in the flow of the vaporized gas.
• the fine distribution of the liquefied gas in the flow of vaporized gas results in an intimate mixing and the liquefied gas evaporates quickly, so that a gas with a largely homogeneous temperature is already present at the measuring device 17.

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

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Citations (6)

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• 2020
  • 2020-02-20 DE DE102020001082.2A patent/DE102020001082A1/de active Pending
• 2021
  • 2021-02-10 WO PCT/EP2021/053253 patent/WO2021165123A1/de unknown
  • 2021-02-10 CN CN202180015503.4A patent/CN115135920A/zh active Pending
  • 2021-02-10 EP EP21705150.7A patent/EP4107422A1/de active Pending

Patent Citations (6)

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