WO2006110060A1 - Dispositif de distribution dosee de liquide cryogenique - Google Patents

Dispositif de distribution dosee de liquide cryogenique Download PDF

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Publication number
WO2006110060A1
WO2006110060A1 PCT/RU2005/000192 RU2005000192W WO2006110060A1 WO 2006110060 A1 WO2006110060 A1 WO 2006110060A1 RU 2005000192 W RU2005000192 W RU 2005000192W WO 2006110060 A1 WO2006110060 A1 WO 2006110060A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
cryogenic fluid
valve
cryogenic liquid
cryogenic
Prior art date
Application number
PCT/RU2005/000192
Other languages
English (en)
Russian (ru)
Inventor
Khasanbi Khabievich Erganokov
Victor Vladislavovich Budrik
Grigory Usikovich Tsfasman
Original Assignee
'cryotec' Limited Co.
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 'cryotec' Limited Co. filed Critical 'cryotec' Limited Co.
Priority to PCT/RU2005/000192 priority Critical patent/WO2006110060A1/fr
Publication of WO2006110060A1 publication Critical patent/WO2006110060A1/fr

Links

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
    • 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
    • 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
    • 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
    • F17C2227/04—Methods for 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
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/061—Level of content in the vessel

Definitions

  • the invention relates to a cryogenic technique, namely, to devices for the dosed delivery of liquid and, in particular, for drip dosing of cryogenic liquid. It is especially advisable to use it for a droplet dosed supply of liquid nitrogen into sealed containers moved by a conveyor, for example, bottles, cans, bags, etc. containers with food and beverages, as well as biological or pharmaceutical substances to create a safe inert environment and overpressure after sealing (clogging) of these containers.
  • cryogenic liquid for example, liquid nitrogen
  • T -196 0 C
  • the heat transfer from the wall to the liquid droplet through the generated heat-conducting vapor layer is relatively small and is equal to 150 W / (m 2 - K) for nitrogen. Accordingly, the film boiling period of a drop of nitrogen with a volume of about lcm. 3 is about 25 seconds, and the time required to seal the container does not exceed 10 seconds. Therefore, this droplet volume will be maximum when the cryogenic liquid is dosed.
  • a droplet boils a vapor volume of nitrogen is formed, which is hundreds of times larger than the volume of a boiling drop, as a result of which displacement and replacement occurs warmer air from the free space of the container above the product, i.e. an inert dry odorless atmosphere forms in the container.
  • cryogenic liquid allows extending the shelf life of the product while maintaining its original quality, as well as creating the necessary excess pressure in the container after it is clogged, which, thereby, improves the operational and commodity characteristics of soft containers under external mechanical and temperature effects during application labels, transportation and storage at temperatures from - 40 ° C to + 40 ° C.
  • a device for the dosed delivery of cryogenic liquids according to US patent JN 5743096, MSC7: F17C 007/02, selected as a prototype.
  • the device comprises a vessel for cryogenic liquid with a valve for filling and maintaining the level, a fitting for removing steam from the vessel and a dispenser, including a valve with a controlled drive and a cylinder with inlet openings, an outlet in the saddle, while the inlet openings in the cylinder are in communication with the cavity of the vessel for cryogenic fluid.
  • the prototype also contains a channel for lifting a vapor-liquid mixture.
  • the indicated vessel for cryogenic liquid, the dispenser and the pipe have thermal insulation.
  • the end shaper of the injected liquid is equipped with a heater to prevent ice formation.
  • the disadvantage of the prototype is the inability to ensure the issuance of equal volumes of cryogenic liquid in each tank moving on the conveyor, especially when injecting drops with a volume in the range of 0.2 cm. 3 to lcm. 3 with a filling line capacity of up to 5 containers per second. This is because in the prototype it is impossible to exclude heat influx through thermal insulation (including modern vacuum) to the dosed cryogenic liquid due to the presence of a positive temperature gradient from the surface of the cylinder wall of the dispenser and the pipe for supplying cryogenic liquid in contact with the liquid.
  • the objective of the invention is to ensure reliable dosing of equal volumes of cryogenic liquid in each container of the same type with the product on the conveyor, especially in the range of the drop volume from 0.2 cm. 3 to lcm. 3 with a filling line capacity of up to 5 containers per second.
  • a device for dosed dispensing of cryogenic liquid containing a vessel for cryogenic liquid with a valve for filling and maintaining the level and a fitting for venting steam and a dispenser, including a valve with a controlled actuator and a cylinder with inlet openings, as well as a saddle with an outlet a nozzle in communication with the end shaper of the injected cryogenic liquid with a heater, the inlet openings of the cylinder being communicated through a pipe for supplying cryogenic liquid and a channel for lifting the vapor-liquid mixture with ud cryogenic fluid introduced casing concentric cylinder around the last to form an annular cavity communicating with the inlets of the cylinder valve dispenser fits tightly to the inner surface of the cylinder and its end the edge forms a locking connection with the seat in the closed state, while the metering valve is spring-loaded and equipped with an adjustable travel stop.
  • FIG.l The proposed device is shown in Fig.l.
  • Figure 2 shows the dispenser in its initial state (it occupies the same position at the end of each dosing cycle).
  • Fig. 3 shows a dispenser with an open valve to the stop with an adjustable stroke limiter.
  • a device for dosed dispensing of cryogenic liquid contains a vessel for cryogenic liquid 1 with a valve for filling and maintaining level 2 and a nozzle for venting steam 3.
  • the main element of the device is dispenser 4, which contains dispenser valve 5, which is equipped with a controlled actuator 22 and is spring-loaded with a spring 20.
  • the device has a cylinder 6 with inlet openings 7, which are in communication with the cavity of the vessel for cryogenic liquid 1 through a pipe for supplying cryogenic liquid 10 and a channel for lifting the vapor-liquid mixture 11. Moreover, oud for cryogenic
  • a casing 15 is introduced, concentric with cylinder 6 to form an annular cavity 16 around cylinder 6 and communicating through the inlet openings of cylinder 7, a supply pipe for cryogenic liquid 10 and a channel for lifting the vapor-liquid mixture 11 with the cavity of the vessel for cryogenic liquids
  • the valve of the dispenser 5 is concentric with the cylinder 6 and fits snugly to its inner surface, for example, when an elastic sleeve 18 is made on the valve surface, for example, of fluoroplastic, and the end edge of the dispenser valve 5 contacts the groove of the seat 19, for example, with the formation of an angular locking connection in source condition.
  • the valve of the dispenser 5 is equipped with an adjustable stroke limiter 21 within the size of the bore of the inlet openings of the cylinder 7 to provide the necessary drop dosages of cryogenic liquid in the range from 0.2 cm. 3 to lcm. 3
  • the device operates as follows.
  • a predetermined dosage of liquid nitrogen is established using an adjustable stroke limiter 21, based on the known free space in the product containers and the distance from the place of their blockage, taking into account the speed of the conveyor and the given overpressure in the tanks after the blockage.
  • the controlled valve actuator 22, providing its movement can be performed, for example, in the form of a pneumatic cylinder, which is driven by the signal of the optocoupler when each beam intersects its beam, which is suitable for the end shaper of the injected cryogenic liquid 13.
  • the resulting nitrogen vapors are discharged from the cryogenic liquid vessel 1 with the help of a steam outlet Z.
  • thermal insulation 12 significantly reduces heat influx from the ambient air to liquid nitrogen, however, does not completely exclude them.
  • a natural circuit is formed when a single-phase cryogenic liquid goes down and a vapor-liquid mixture goes up, while the vapor component is already discharged from the vessel for cryogenic liquid 1 through the steam outlet 3.
  • the metering valve 5 in the initial state is closed by pressing spring 20 of valve 5 to the seat 8.
  • Each metering cycle starts from the moment the beam of the optocoupler intersects the next tank with the product supplied by the conveyor, the pneumatic cylinder lifts the valve by a predetermined distance, providing opening of the inlet openings of the cylinder 7, and at the same time, the passage size of the inlet openings of the cylinder 7 is adjustable from zero (openings 7 are completely closed) to the maximum corresponding to dix valve prior to contact with adjustable travel stop 21.
  • the volume of the cryogenic liquid dispensing is Vdoz.
  • ⁇ F ⁇ , where ⁇ is the average speed of the cryogenic liquid when filling through the orifice of the openings 7, while it is almost constant; ⁇ is the time of lifting the metering valve (set equal to the calculated one); F - adjustable cross-sectional area of the holes 7 (carried out by a controlled stroke limiter 21).
  • the proposed invention can be used for drip dosing of cryogenic liquid in a sealed container, moved by a conveyor, while the components for the implementation of this technical solution are produced according to well-known proven industrial technologies.

Landscapes

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

Abstract

L'invention relève de la cryogénie, et se rapporte en particulier à des dispositifs permettant le dosage 'goutte par goutte' d'un liquide cryogénique dans des récipients hermétiques. Le dispositif de distribution dosée de liquide cryogénique selon l'invention comprend : un réservoir de liquide cryogénique (1), doté d'une soupape d'entrée et de maintien de niveau (2) et d'une buse d'évacuation de vapeur (3) ; un dispositif de dosage (4), qui possède une soupape (5) dotée d'un mécanisme d'entraînement commandable (22) et un cylindre (6) possédant des orifices d'entrée (7) ; et un logement (8), muni d'un ajutage de sortie (9) relié à un dispositif d'extrémité de formation de liquide cryogénique à injecter (13) doté d'un dispositif chauffant (14). Les orifices d'entrée du cylindre sont reliés à la cavité du réservoir de liquide cryogénique à l'aide d'un tuyau d'alimentation en liquide cryogénique (10) et d'un canal de montée de mélange vapeur-liquide (11), la surface dudit canal, la surface dudit réservoir et le dispositif de dosage étant dotés d'une isolation thermique (12). Le dispositif de dosage comprend un corps (15), concentrique au cylindre et formant autour de ce dernier une cavité annulaire (16) qui communique avec les orifices d'entrée du cylindre. La soupape est montée sur ressort et est dotée d'un limiteur de course (21) régulé. L'invention permet de doser de manière fiable des volumes identiques de liquide cryogénique dans chaque récipient de même type contenant un produit sur une chaîne de production, notamment de façon que la variation du volume des gouttes soit comprise entre 0,2 cm3 et 1 cm3, la chaîne de remplissage atteignant un rendement allant jusqu'à 5 réservoirs par seconde.
PCT/RU2005/000192 2005-04-14 2005-04-14 Dispositif de distribution dosee de liquide cryogenique WO2006110060A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/RU2005/000192 WO2006110060A1 (fr) 2005-04-14 2005-04-14 Dispositif de distribution dosee de liquide cryogenique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2005/000192 WO2006110060A1 (fr) 2005-04-14 2005-04-14 Dispositif de distribution dosee de liquide cryogenique

Publications (1)

Publication Number Publication Date
WO2006110060A1 true WO2006110060A1 (fr) 2006-10-19

Family

ID=37087270

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2005/000192 WO2006110060A1 (fr) 2005-04-14 2005-04-14 Dispositif de distribution dosee de liquide cryogenique

Country Status (1)

Country Link
WO (1) WO2006110060A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010014026A1 (fr) * 2008-08-01 2010-02-04 Erganokov Khasanbi Khabievich Dispositif d'injection dosée d'un liquide cryogénique et système de commande correspondant
WO2018075770A1 (fr) * 2016-10-19 2018-04-26 Chart Inc. Dispositif, système et procédé de bras de dosage interchangeable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1532774A2 (ru) * 1987-11-03 1989-12-30 Предприятие П/Я Г-4805 Устройство дл автоматической выдачи жидкого хладагента
US5743096A (en) * 1996-04-11 1998-04-28 Vacuum Barrier Corporation Controlled dosing of liquid cryogen
RU2129728C1 (ru) * 1998-04-06 1999-04-27 Дужик Виктор Александрович Устройство для дозированной подачи жидкости
US6047553A (en) * 1997-07-07 2000-04-11 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Apparatus and cryogenic valve for the delivery of a cryogenic liquid, and corresponding plant for packaging a product

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1532774A2 (ru) * 1987-11-03 1989-12-30 Предприятие П/Я Г-4805 Устройство дл автоматической выдачи жидкого хладагента
US5743096A (en) * 1996-04-11 1998-04-28 Vacuum Barrier Corporation Controlled dosing of liquid cryogen
US6047553A (en) * 1997-07-07 2000-04-11 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Apparatus and cryogenic valve for the delivery of a cryogenic liquid, and corresponding plant for packaging a product
RU2129728C1 (ru) * 1998-04-06 1999-04-27 Дужик Виктор Александрович Устройство для дозированной подачи жидкости

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010014026A1 (fr) * 2008-08-01 2010-02-04 Erganokov Khasanbi Khabievich Dispositif d'injection dosée d'un liquide cryogénique et système de commande correspondant
WO2018075770A1 (fr) * 2016-10-19 2018-04-26 Chart Inc. Dispositif, système et procédé de bras de dosage interchangeable
US10451221B2 (en) 2016-10-19 2019-10-22 Chart Inc. Interchangeable dosing arm device, system and method

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