EP0679852A1 - Apparatus for pressurizing a stack of plates, more particularly for a plate-like heat exchanger - Google Patents

Apparatus for pressurizing a stack of plates, more particularly for a plate-like heat exchanger Download PDF

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Publication number
EP0679852A1
EP0679852A1 EP95400930A EP95400930A EP0679852A1 EP 0679852 A1 EP0679852 A1 EP 0679852A1 EP 95400930 A EP95400930 A EP 95400930A EP 95400930 A EP95400930 A EP 95400930A EP 0679852 A1 EP0679852 A1 EP 0679852A1
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EP
European Patent Office
Prior art keywords
fluid
enclosure
pipe
plates
arrival
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.)
Granted
Application number
EP95400930A
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German (de)
French (fr)
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EP0679852B1 (en
Inventor
Dominique Sabin
William Levy
Emmanuel Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Areva NP SAS
Alfa Laval Packinox SAS
Original Assignee
Packinox SA
Framatome SA
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Publication of EP0679852A1 publication Critical patent/EP0679852A1/en
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Publication of EP0679852B1 publication Critical patent/EP0679852B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
    • F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0244—Operation; Control and regulation; Instrumentation
    • F25J1/0256—Safety aspects of operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0262—Details of the cold heat exchange system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0006—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the plate-like or laminated conduits being enclosed within a pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/90—Details about safety operation of the installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure

Definitions

  • the present invention relates to a device for pressurizing a bundle of plates, in particular for a plate heat exchanger.
  • installations are known in which the condensation of gas at high pressure and at low pressure is obtained temperature, then the sub-cooling, at high pressure, of the liquefied gas and then the expansion of the latter in continuous flow through an expansion member to collect the liquefied gas, for example in a low pressure container.
  • Cryogenic generators are generally formed by bundles of coiled tubes which have the disadvantage of being large and relatively expensive.
  • Installations which use bundles of plates arranged in a sealed enclosure and comprising a stack of plates, parallel to each other to form a first circuit for circulation of gas under pressure and a second circuit for circulation of a liquid under pressure, co-current at the first circuit.
  • the object of the invention is to propose a device for pressurizing a bundle of plates which makes it possible to guarantee the mechanical strength of this bundle of plates under all operating conditions.
  • the subject of the invention is a device for pressurizing a bundle of plates, in particular for a plate heat exchanger, the bundle of plates being arranged in a sealed enclosure and comprising a stack of metal plates parallel to each other to form a first circulation circuit of a first pressurized fluid and a second circulation circuit of a second pressurized fluid, the first fluid being at a pressure higher than the pressure of the second fluid, characterized in that it comprises a first pipe connecting the enclosure with the arrival of the first fluid permanently supplying this enclosure, a second conduit connecting the enclosure with the arrival of the second fluid supplying this enclosure in the event of the supply of said first fluid and organs for controlling the supply of said enclosure with second fluid.
  • Figs. 1 and 2 there is shown diagrammatically a bundle of plates 1 in particular for a plate heat exchanger intended for example for the liquefaction of a natural or synthetic gas with a low boiling point.
  • This bundle of plates 1 is placed in a sealed enclosure 2 and consists of a multitude of metal plates 3 stacked and parallel to each other.
  • the bundle of plates 1 can be equipped with a mechanical pressurization system consisting of two thick plates 4 arranged on two opposite sides of the bundle of plates 1 and connected together by tie rods 5.
  • the tie rods 5 can be fitted with dynamo-elastic rings, not shown, making it possible to compensate for the differential expansion of the tie rods 5 and of the plates 3 of the bundle of plates 1.
  • These plates 3 form a first circuit A and a second circuit B, for example co-current to the first circuit A.
  • the bundle of plates 1 comprises at each of its ends a collector, respectively 6 and 7.
  • the collector 6 is divided into two compartments 6a and 6b by a partition 8 and the collector 7 is also divided into two compartments 7a and 7b by a partition 9.
  • a pipe 10 for the arrival of a first fluid opens into compartment 6a of the manifold 6 and communicates by circuit A with compartment 7a of the manifold 7, into which a pipe 11 for leaving the first cooled fluid, ie liquefied gas after it has passed through the bundle of plates 1.
  • a first fluid such as for example a gas at a pressure of 50 bars
  • Line 11 is connected to a low pressure container, not shown to collect the liquefied gas.
  • a line 12 for the arrival of a second fluid opens into the compartment 6b of the manifold 6 and communicates by the circuit B with the compartment 7b of the collector 7 into which there opens a pipe 13 for the outlet of the coolant after it has passed through the bundle of plates 1.
  • a second fluid such as for example a gas phase cooling fluid at a pressure of 48 bars
  • the plate bundle 1 is equipped with a device for active or passive pressurization.
  • This pressurization device comprises a first pipe 15 for connection of the enclosure 2 with the gas inlet pipe 10, permanently supplying this enclosure 2 with gas to be treated under pressure and a second pipe 16 for connection of the enclosure 2 with the line 12 for cooling gas inlet, supplying this enclosure 2 with cooling gas in the event of the supply of gas to be treated being stopped.
  • the pressurization device also comprises members 20 for controlling the supply of enclosure 2 with cooling gas in the event of a shutdown of the supply of gas to be treated to said enclosure 2.
  • the organs 20 for controlling the supply of the enclosure 2 with cooling gas are formed, on the one hand, by a non-return valve 21 mounted on the first pipe 15 connecting the enclosure 2 with the pipe 10 for the arrival of gas to be treated and, on the other hand, by a piloted valve 22 mounted on the second pipe 16 for connecting the enclosure 2 with the pipe 12 for the supply of cooling gas.
  • the piloted valve 22 is adjusted for opening at a pressure inside the enclosure substantially lower than the pressure of the coolant, for example at a pressure 1 bar lower than the pressure of said coolant.
  • the piloted valve 22 is closed and the pressurization of the bundle of plates 1 is carried out by supplying the interior of the enclosure 2 with gas to be treated at a pressure of approximately 50 bars by means of the pipe 15 and the non-return valve 21.
  • the pilot-operated valve 22 by measuring the pressure differential between the interior of the enclosure 2 and the supply of cooling gas, opens to ensure pressurizing the bundle of plates 1 by supplying the enclosure 2 with cooling gas via the pipe 16.
  • control members 20 are formed by a three-way valve 23 connecting the first connecting pipe 15 with the second connecting pipe 16 and connected to the enclosure 2 by a third connecting pipe 17.
  • the three-way valve 23 is adjusted to close the first connection pipe 15 of the gas inlet to be treated and to open the second connecting line 16 from the arrival of the cooling gas at a pressure inside the enclosure 2 substantially lower than the pressure of said cooling liquid.
  • the three-way valve 23 puts the interior of the enclosure 2 in communication with the pipe 10 for the arrival of gas to be treated under pressure via the connecting pipes 15 and 17.
  • the three-way valve 23 closes the connection pipe 16 connected to the pipe 12 for the supply of cooling gas.
  • the three-way valve 23 closes the pipe 15 and opens the pipe 16 to supply the interior of the enclosure 2 with cooling gas via the pipe 17 .
  • control members 20 are formed, on the one hand, by a non-return valve 21 mounted on the first pipe 15 for connecting the enclosure 2 with the pipe 10 for the inlet of gas to be treated under pressure and, on the other hand, by a rupture disc 24 mounted on a second pipe 16 for connecting the enclosure 2 with the pipe 12 for the arrival of the cooling gas.
  • the rupture disc 24 opens and supplies the interior of the said enclosure 2 in cooling gas via line 16.
  • the pressurization device according to the invention makes it possible, by simple and reliable means, to guarantee the mechanical strength of the bundle of plates under all operating conditions.
  • the pressurization device according to the invention can be used both for plate heat exchangers intended to cool or to heat a fluid and comprising a bundle of plates for circulation of fluids co-current or counter-current or cross-current.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

Pressurisation device for a bundle of plates (1), in particular a plate heat exchanger, where the bundle of plates is put in a sealed chamber (2) containing parallel layers of metal plates (3) forming a first circuit A for a first fluid under pressure and a second circuit B for a second fluid under pressure. The first fluid is at a greater pressure than that of the second fluid. A first pipe (15) connects the chamber with the inlet of the first fluid (10) which feeds the chamber constantly, a second pipe (16) connects the chamber with the inlet of the second fluid (12) which feeds the chamber when the first fluid stops, and the inflow of the second fluid is controlled by a controller (20). <IMAGE>

Description

La présente invention a pour objet un dispositif de pressurisation d'un faisceau de plaques, notamment pour un échangeur thermique à plaques.The present invention relates to a device for pressurizing a bundle of plates, in particular for a plate heat exchanger.

Dans certain domaine d'application comme par exemple la liquéfaction d'un gaz naturel ou synthétique à bas point d'ébullition, on connaît des installations dans lesquelles on obtient, par traversée de générateurs cryogéniques, la condensation du gaz à haute pression et à basse température, puis le sous-refroidissement, à haute pression, du gaz liquéfié et ensuite la détente de celui-ci en flux continu à travers un organe de détente pour recueillir le gaz liquéfié par exemple dans un récipient à basse pression.In certain fields of application such as, for example, the liquefaction of a natural or synthetic gas with a low boiling point, installations are known in which the condensation of gas at high pressure and at low pressure is obtained temperature, then the sub-cooling, at high pressure, of the liquefied gas and then the expansion of the latter in continuous flow through an expansion member to collect the liquefied gas, for example in a low pressure container.

Les générateurs cryogéniques sont généralement formés par des faisceaux de tubes bobinés qui ont pour inconvénient d'être de dimensions importantes et d'un coût relativement élevé.Cryogenic generators are generally formed by bundles of coiled tubes which have the disadvantage of being large and relatively expensive.

On connaît également des installations qui utilisent des faisceaux de plaques disposés dans une enceinte étanche et comportant un empilement de plaques, parallèles les unes aux autres pour former un premier circuit de circulation du gaz sous pression et un second circuit de circulation d'un liquide sous pression, co-courant au premier circuit.Installations are also known which use bundles of plates arranged in a sealed enclosure and comprising a stack of plates, parallel to each other to form a first circuit for circulation of gas under pressure and a second circuit for circulation of a liquid under pressure, co-current at the first circuit.

Pour éviter d'endommager le faisceau de plaques, celui-ci doit être bloqué, soit par une pression extérieure supérieure ou égale à la plus grande pression pouvant existée dans le faisceau de plaques, soit par une pressurisation mécanique telle qu'un assemblage tôles-tirants, soit par une combinaison de ces deux systèmes.To avoid damaging the plate bundle, it must be blocked, either by an external pressure greater than or equal to the greatest pressure that can exist in the plate bundle, or by mechanical pressurization such as a sheet metal assembly - tie rods, or by a combination of these two systems.

Ainsi, toutes les conditions opératoires, c'est à dire le fonctionnement normal, le démarrage, l'arrêt et les cas exceptionnels de fonctionnement, doivent être envisagés pour garantir la tenue mécanique du faisceau de plaques.Thus, all the operating conditions, that is to say normal operation, starting, stopping and exceptional cases of operation, must be considered to guarantee the mechanical strength of the plate bundle.

L'invention a pour but de proposer un dispositif de pressurisation d'un faisceau de plaques qui permet de garantir la tenue mécanique de ce faisceau de plaques dans toutes les conditions de fonctionnement.The object of the invention is to propose a device for pressurizing a bundle of plates which makes it possible to guarantee the mechanical strength of this bundle of plates under all operating conditions.

L'invention a pour objet un dispositif de pressurisation d'un faisceau de plaques, notamment pour un échangeur thermique à plaques, le faisceau de plaques étant disposé dans une enceinte étanche et comportant un empilement de plaques métalliques parallèles les unes aux autres pour former un premier circuit de circulation d'un premier fluide sous pression et un second circuit de circulation d'un second fluide sous pression, le premier fluide étant à une pression supérieure à la pression du second fluide, caractérisé en ce qu'il comprend une première conduite de liaison de l'enceinte avec l'arrivée du premier fluide alimentant en permanence cette enceinte, une seconde conduite de liaison de l'enceinte avec l'arrivée du second fluide alimentant cette enceinte en cas d'arrêt de l'alimentation dudit premier fluide et des organes de commande de l'alimentation de ladite enceinte en second fluide.The subject of the invention is a device for pressurizing a bundle of plates, in particular for a plate heat exchanger, the bundle of plates being arranged in a sealed enclosure and comprising a stack of metal plates parallel to each other to form a first circulation circuit of a first pressurized fluid and a second circulation circuit of a second pressurized fluid, the first fluid being at a pressure higher than the pressure of the second fluid, characterized in that it comprises a first pipe connecting the enclosure with the arrival of the first fluid permanently supplying this enclosure, a second conduit connecting the enclosure with the arrival of the second fluid supplying this enclosure in the event of the supply of said first fluid and organs for controlling the supply of said enclosure with second fluid.

Selon d'autres caractéristiques de l'invention

  • les organes de commande sont formés, d'une part, par un clapet anti-retour monté sur la première conduite de liaison de l'enceinte avec l'arrivée du premier fluide et, d'autre part, par une vanne pilotée montée sur la seconde conduite de liaison de l'enceinte avec l'arrivée du second fluide,
  • la vanne pilotée est réglée pour une ouverture à une pression à l'intérieur de l'enceinte sensiblement inférieure à la pression du second fluide,
  • les organes de commande sont formés par une vanne trois voies reliant la première conduite de liaison avec la seconde conduite de liaison et raccordée à l'enceinte par une troisième conduite de liaison,
  • la vanne trois voies est réglée pour une fermeture de la première conduite de liaison de l'arrivée du premier fluide et une ouverture de la seconde conduite de liaison de l'arrivée du second fluide à une pression à l'intérieur de l'enceinte sensiblement inférieure à la pression dudit second fluide.
  • les organes de commande sont formés, d'une part, par un clapet anti-retour monté sur la première conduite de liaison de l'enceinte avec l'arrivée du premier fluide et, d'autre part, par un disque de rupture monté sur la seconde conduite de liaison de l'enceinte avec l'arrivée du second fluide,
  • le premier fluide est formé par un gaz par exemple un gaz naturel ou synthétique à bas point d'ébullition,
  • le second fluide est formé par un gaz de refroidissement.
    L'invention sera mieux comprise à l'aide de la description qui va suivre, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés, sur lesquels :
  • la Fig. 1 est une vue schématique en coupe d'un premier mode de réalisation du système de pressurisation d'un faisceau de plaques, selon l'invention,
  • la Fig. 2 est une vue en coupe selon la ligne 2-2 de la Fig. 1,
  • la Fig. 3 est une vue schématique en coupe d'un second mode de réalisation du système de pressurisation d'un faisceau de plaques, selon l'invention,
  • la Fig. 4 est une vue schématique en coupe d'un troisième mode de réalisation du système de pressurisation d'un faisceau de plaques, selon l'invention.
According to other features of the invention
  • the control members are formed, on the one hand, by a non-return valve mounted on the first connecting pipe of the enclosure with the arrival of the first fluid and, on the other hand, by a piloted valve mounted on the second enclosure connecting pipe with the arrival of the second fluid,
  • the piloted valve is adjusted for opening at a pressure inside the enclosure substantially lower than the pressure of the second fluid,
  • the control elements are formed by a three-way valve connecting the first connecting pipe with the second connecting pipe and connected to the enclosure by a third connecting pipe,
  • the three-way valve is adjusted for closing the first connection pipe from the arrival of the first fluid and opening the second connection pipe from the arrival of the second fluid at a pressure inside the enclosure substantially lower than the pressure of said second fluid.
  • the control members are formed, on the one hand, by a non-return valve mounted on the first connecting pipe of the enclosure with the arrival of the first fluid and, on the other hand, by a rupture disc mounted on the second connecting pipe of the enclosure with the arrival of the second fluid,
  • the first fluid is formed by a gas, for example a natural or synthetic gas with a low boiling point,
  • the second fluid is formed by a cooling gas.
    The invention will be better understood with the aid of the description which follows, given solely by way of example and made with reference to the appended drawings, in which:
  • Fig. 1 is a schematic sectional view of a first embodiment of the system for pressurizing a bundle of plates, according to the invention,
  • Fig. 2 is a sectional view along line 2-2 of FIG. 1,
  • Fig. 3 is a schematic sectional view of a second embodiment of the system for pressurizing a bundle of plates, according to the invention,
  • Fig. 4 is a schematic sectional view of a third embodiment of the system for pressurizing a bundle of plates, according to the invention.

Sur les Figs. 1 et 2, on a représenté schématiquement un faisceau de plaques 1 notamment pour un échangeur thermique à plaques destiné par exemple à la liquéfaction d'un gaz naturel ou synthétique à bas point d'ébullition.In Figs. 1 and 2, there is shown diagrammatically a bundle of plates 1 in particular for a plate heat exchanger intended for example for the liquefaction of a natural or synthetic gas with a low boiling point.

Ce faisceau de plaques 1 est disposé dans une enceinte étanche 2 et se compose d'une multitude de plaques métalliques 3 empilées et parallèles les unes aux autres.This bundle of plates 1 is placed in a sealed enclosure 2 and consists of a multitude of metal plates 3 stacked and parallel to each other.

Comme représenté à la Fig. 2, le faisceau de plaques 1 peut être équipé d'un système de pressurisation mécanique constitué de deux plaques épaisses 4 disposées sur deux côtés opposés du faisceau de plaques 1 et reliées entre elles par des tirants 5.As shown in Fig. 2, the bundle of plates 1 can be equipped with a mechanical pressurization system consisting of two thick plates 4 arranged on two opposite sides of the bundle of plates 1 and connected together by tie rods 5.

Les tirants 5 peuvent être équipés de bagues dynamo-élastiques, non représentées, permettant de compenser la dilatation différentielle des tirants 5 et des plaques 3 du faisceau de plaques 1.The tie rods 5 can be fitted with dynamo-elastic rings, not shown, making it possible to compensate for the differential expansion of the tie rods 5 and of the plates 3 of the bundle of plates 1.

Ces plaques 3 forment un premier circuit A et un second circuit B, par exemple co-courant au premier circuit A.These plates 3 form a first circuit A and a second circuit B, for example co-current to the first circuit A.

Le faisceau de plaques 1 comporte à chacune de ses extrémités un collecteur, respectivement 6 et 7.The bundle of plates 1 comprises at each of its ends a collector, respectively 6 and 7.

Le collecteur 6 est divisé en deux compartiments 6a et 6b par une cloison 8 et le collecteur 7 est également divisé en deux compartiments 7a et 7b par une cloison 9.The collector 6 is divided into two compartments 6a and 6b by a partition 8 and the collector 7 is also divided into two compartments 7a and 7b by a partition 9.

Une conduite 10 d'arrivée d'un premier fluide, comme par exemple un gaz à une pression de 50 bars, débouche dans le compartiment 6a du collecteur 6 et communique par le circuit A avec le compartiment 7a du collecteur 7, dans lequel débouche une conduite 11 de sortie du premier fluide refroidi, c'est à dire du gaz liquéfié après son passage dans le faisceau de plaques 1.A pipe 10 for the arrival of a first fluid, such as for example a gas at a pressure of 50 bars, opens into compartment 6a of the manifold 6 and communicates by circuit A with compartment 7a of the manifold 7, into which a pipe 11 for leaving the first cooled fluid, ie liquefied gas after it has passed through the bundle of plates 1.

La conduite 11 est reliée à un récipient basse pression, non représenté pour recueillir le gaz liquéfié.Line 11 is connected to a low pressure container, not shown to collect the liquefied gas.

D'autre part, une conduite 12 d'arrivée d'un second fluide, comme par exemple un fluide de refroidissement en phase gazeuse à une pression de 48 bars, débouche dans le compartiment 6b du collecteur 6 et communique par le circuit B avec le compartiment 7b du collecteur 7 dans lequel débouche une conduite 13 de sortie du liquide de refroidissement après son passage dans le faisceau de plaques 1.On the other hand, a line 12 for the arrival of a second fluid, such as for example a gas phase cooling fluid at a pressure of 48 bars, opens into the compartment 6b of the manifold 6 and communicates by the circuit B with the compartment 7b of the collector 7 into which there opens a pipe 13 for the outlet of the coolant after it has passed through the bundle of plates 1.

Pour garantir la tenue mécanique du faisceau de plaques 1 dans toutes les conditions opératoires c'est à dire pendant le fonctionnement normal, le démarrage, l'arrêt et les cas exceptionnels de fonctionnement, le faisceau de plaques 1 est équipé d'un dispositif de pressurisation actif ou passif.To guarantee the mechanical strength of the plate bundle 1 under all operating conditions, that is to say during normal operation, starting, stopping and in exceptional cases of operation, the plate bundle 1 is equipped with a device for active or passive pressurization.

Dans ce qui suit, la description sera faite en utilisant comme premier fluide un gaz à traiter et comme second fluide un gaz de refroidissement, d'autres fluides pouvant bien évidemment être utilisés.In what follows, the description will be made using as a first fluid a gas to be treated and as a second fluid a cooling gas, other fluids which can obviously be used.

Ce dispositif de pressurisation comprend une première conduite 15 de liaison de l'enceinte 2 avec la conduite 10 d'arrivée de gaz, alimentant en permanence cette enceinte 2 en gaz à traiter sous pression et une seconde conduite 16 de liaison de l'enceinte 2 avec la conduite 12 d'arrivée de gaz de refroidissement, alimentant cette enceinte 2 en gaz de refroidissement en cas d'arrêt de l'alimentation en gaz à traiter.This pressurization device comprises a first pipe 15 for connection of the enclosure 2 with the gas inlet pipe 10, permanently supplying this enclosure 2 with gas to be treated under pressure and a second pipe 16 for connection of the enclosure 2 with the line 12 for cooling gas inlet, supplying this enclosure 2 with cooling gas in the event of the supply of gas to be treated being stopped.

Le dispositif de pressurisation comporte également des organes 20 de commande de l'alimentation de l'enceinte 2 en gaz de refroidissement dans le cas d'un arrêt de l'alimentation en gaz à traiter de ladite enceinte 2.The pressurization device also comprises members 20 for controlling the supply of enclosure 2 with cooling gas in the event of a shutdown of the supply of gas to be treated to said enclosure 2.

Selon un premier mode de réalisation représenté à la Fig. 1, les organes 20 de commande de l'alimentation de l'enceinte 2 en gaz de refroidissement sont formés, d'une part, par un clapet anti-retour 21 monté sur la première conduite 15 de liaison de l'enceinte 2 avec la conduite 10 d'arrivée de gaz à traiter et, d'autre part, par une vanne pilotée 22 montée sur la seconde conduite 16 de liaison de l'enceinte 2 avec la conduite 12 d'arrivée de gaz de refroidissement.According to a first embodiment shown in Fig. 1, the organs 20 for controlling the supply of the enclosure 2 with cooling gas are formed, on the one hand, by a non-return valve 21 mounted on the first pipe 15 connecting the enclosure 2 with the pipe 10 for the arrival of gas to be treated and, on the other hand, by a piloted valve 22 mounted on the second pipe 16 for connecting the enclosure 2 with the pipe 12 for the supply of cooling gas.

La vanne pilotée 22 est réglée pour une ouverture à une pression à l'intérieur de l'enceinte sensiblement inférieure à la pression du liquide de refroidissement, par exemple à une pression inférieure de 1 bar à la pression dudit liquide de refroidissement.The piloted valve 22 is adjusted for opening at a pressure inside the enclosure substantially lower than the pressure of the coolant, for example at a pressure 1 bar lower than the pressure of said coolant.

En fonctionnement normal, la vanne pilotée 22 est fermée et la pressurisation du faisceau de plaques 1 est réalisée par une alimentation de l'intérieur de l'enceinte 2 en gaz à traiter à une pression d'environ 50 bars au moyen de la conduite 15 et du clapet anti-retour 21.In normal operation, the piloted valve 22 is closed and the pressurization of the bundle of plates 1 is carried out by supplying the interior of the enclosure 2 with gas to be treated at a pressure of approximately 50 bars by means of the pipe 15 and the non-return valve 21.

En cas d'arrêt de l'alimentation en gaz à traiter, la vanne pilotée 22, par la mesure de la différentielle de pression entre l'intérieur de l'enceinte 2 et l'alimentation en gaz de refroidissement, s'ouvre pour assurer la pressurisation du faisceau de plaques 1 en alimentant l'enceinte 2 en gaz de refroidissement par la conduite 16.If the supply of gas to be treated stops, the pilot-operated valve 22, by measuring the pressure differential between the interior of the enclosure 2 and the supply of cooling gas, opens to ensure pressurizing the bundle of plates 1 by supplying the enclosure 2 with cooling gas via the pipe 16.

Selon un second mode de réalisation représenté à la Fig. 3, les organes 20 de commande sont formés par une vanne trois voies 23 reliant la première conduite de liaison 15 avec la seconde conduite de liaison 16 et raccordée à l'enceinte 2 par une troisième conduite de liaison 17.According to a second embodiment shown in FIG. 3, the control members 20 are formed by a three-way valve 23 connecting the first connecting pipe 15 with the second connecting pipe 16 and connected to the enclosure 2 by a third connecting pipe 17.

La vanne trois voies 23 est réglée pour une fermeture de la première conduite de liaison 15 de l'arrivée du gaz à traiter et une ouverture de la seconde conduite de liaison 16 de l'arrivée du gaz de refroidissement à une pression à l'intérieur de l'enceinte 2 sensiblement inférieure à la pression dudit liquide de refroidissement.The three-way valve 23 is adjusted to close the first connection pipe 15 of the gas inlet to be treated and to open the second connecting line 16 from the arrival of the cooling gas at a pressure inside the enclosure 2 substantially lower than the pressure of said cooling liquid.

En fonctionnement normal, la vanne trois voies 23 met en communication l'intérieur de l'enceinte 2 avec la conduite 10 d'arrivée de gaz à traiter sous pression par l'intermédiaire des conduites de liaison 15 et 17.In normal operation, the three-way valve 23 puts the interior of the enclosure 2 in communication with the pipe 10 for the arrival of gas to be treated under pressure via the connecting pipes 15 and 17.

La vanne trois voies 23 obture la conduite de liaison 16 reliée à la conduite 12 d'arrivée de gaz de refroidissement.The three-way valve 23 closes the connection pipe 16 connected to the pipe 12 for the supply of cooling gas.

En cas d'arrêt de l'alimentation en gaz à traiter, la vanne trois voies 23 ferme la conduite 15 et ouvre la conduite 16 pour alimenter l'intérieur de l'enceinte 2 en gaz de refroidissement par l'intermédiaire de la conduite 17.If the supply of gas to be treated stops, the three-way valve 23 closes the pipe 15 and opens the pipe 16 to supply the interior of the enclosure 2 with cooling gas via the pipe 17 .

Selon un troisième mode de réalisation représenté à la Fig. 4, les organes 20 de commande sont formés, d'une part, par un clapet anti-retour 21 monté sur la première conduite 15 de liaison de l'enceinte 2 avec la conduite 10 d'arrivée de gaz à traiter sous pression et, d'autre part, par un disque de rupture 24 monté sur une seconde conduite 16 de liaison de l'enceinte 2 avec la conduite 12 d'arrivée du gaz de refroidissement.According to a third embodiment shown in FIG. 4, the control members 20 are formed, on the one hand, by a non-return valve 21 mounted on the first pipe 15 for connecting the enclosure 2 with the pipe 10 for the inlet of gas to be treated under pressure and, on the other hand, by a rupture disc 24 mounted on a second pipe 16 for connecting the enclosure 2 with the pipe 12 for the arrival of the cooling gas.

En cas d'arrêt de l'alimentation de l'intérieur de l'enceinte 2 en gaz à traiter sous pression par la conduite 15, le disque de rupture 24 s'ouvre et assure l'alimentation de l'intérieur de ladite enceinte 2 en gaz de refroidissement par l'intermédiaire de la conduite 16.If the supply of the interior of the enclosure 2 with gas to be treated under pressure is stopped by the line 15, the rupture disc 24 opens and supplies the interior of the said enclosure 2 in cooling gas via line 16.

Le dispositif de pressurisation selon l'invention permet, par des moyens simples et fiables, de garantir la tenue mécanique du faisceau de plaques dans toutes les conditions de fonctionnement.The pressurization device according to the invention makes it possible, by simple and reliable means, to guarantee the mechanical strength of the bundle of plates under all operating conditions.

Le dispositif de pressurisation selon l'invention peut être utilisé aussi bien pour des échangeurs thermiques à plaques destinés à refroidir ou à réchauffer un fluide et comportant un faisceau de plaques à circulation des fluides co-courants ou à contre-courants ou à courants croisés.The pressurization device according to the invention can be used both for plate heat exchangers intended to cool or to heat a fluid and comprising a bundle of plates for circulation of fluids co-current or counter-current or cross-current.

Claims (8)

Dispositif de pressurisation d'un faisceau de plaques (1), notamment pour un échangeur thermique à plaques, ledit faisceau de plaques (1) étant disposé dans une enceinte (2) étanche et comportant un empilement de plaques métalliques (3), parallèles les unes aux autres pour former un premier circuit A de circulation d'un premier fluide sous pression et un second circuit B de circulation d'un second fluide sous pression, le premier fluide étant à une pression supérieure à la pression du second fluide, caractérisé en ce qu'il comprend une première conduite (15) de liaison de l'enceinte (2) avec l'arrivée (10) du premier fluide alimentant en permanence cette enceinte (2), une seconde conduite (16) de liaison de l'enceinte (2) avec l'arrivée (12) du second fluide alimentant cette enceinte (2) en cas d'arrêt de l'alimentation dudit premier fluide et des organes (20) de commande de l'alimentation de ladite enceinte (2) en second fluide.Device for pressurizing a bundle of plates (1), in particular for a plate heat exchanger, said bundle of plates (1) being disposed in a sealed enclosure (2) and comprising a stack of metal plates (3), parallel to the to each other to form a first circuit A for circulation of a first fluid under pressure and a second circuit B for circulation of a second fluid under pressure, the first fluid being at a pressure higher than the pressure of the second fluid, characterized in what it includes a first pipe (15) connecting the enclosure (2) with the inlet (10) of the first fluid permanently supplying this enclosure (2), a second pipe (16) connecting the enclosure (2) with the arrival (12) of the second fluid supplying this enclosure (2) in the event of the supply of said first fluid and of the organs (20) controlling the supply of said enclosure (2) second fluid. Dispositif selon la revendication 1, caractérisé en ce que les organes (20) de commande sont formés, d'une part, par un clapet anti-retour (21) monté sur la première conduite (15) de liaison de l'enceinte (2) avec l'arrivée (10) du premier fluide et, d'autre part, par une vanne pilotée (22) montée sur la seconde conduite (16) de liaison de l'enceinte (2) avec l'arrivée (12) du second fluide.Device according to claim 1, characterized in that the control members (20) are formed, on the one hand, by a non-return valve (21) mounted on the first pipe (15) connecting the enclosure (2 ) with the arrival (10) of the first fluid and, on the other hand, by a piloted valve (22) mounted on the second pipe (16) connecting the enclosure (2) with the arrival (12) of the second fluid. Dispositif selon la revendication 2, caractérisé en ce que la vanne pilotée (22) est réglée pour une ouverture et une pression à l'intérieur de l'enceinte (2) sensiblement inférieure à la pression du second fluide.Device according to claim 2, characterized in that the piloted valve (22) is adjusted for an opening and a pressure inside the enclosure (2) substantially lower than the pressure of the second fluid. Dispositif selon la revendication 1, caractérisé en ce que les organes (20) de commande sont formés par une vanne trois voies (22) reliant la première conduite (15) de liaison avec la seconde conduite (16) de liaison et raccordée à l'enceinte (2) par une troisième conduite (17) de liaison.Device according to claim 1, characterized in that the control members (20) are formed by a three-way valve (22) connecting the first line (15) connecting with the second line (16) connecting and connected to the enclosure (2) by a third line (17) connecting. Dispositif selon la revendication 4, caractérisé en ce que la vanne trois voies (23) est réglée pour une fermeture de la première conduite (15) de liaison de l'arrivée du premier fluide et une ouverture de la seconde conduite (16) de liaison de l'arrivée du second fluide à une pression à l'intérieur de l'enceinte (2) sensiblement inférieure à la pression dudit second fluide.Device according to claim 4, characterized in that the three-way valve (23) is adjusted for closing the first connection pipe (15) from the arrival of the first fluid and opening the second connection pipe (16) the arrival of the second fluid at a pressure inside the enclosure (2) substantially lower than the pressure of said second fluid. Dispositif selon la revendication 1, caractérisé en ce que les organes (20) de commande sont formés, d'une part, par un clapet anti-retour (21) monté sur la première conduite (15) de liaison de l'enceinte (2) avec l'arrivée (10) du premier fluide et, d'autre part, par un disque de rupture (24) monté sur la seconde conduite (16) de liaison de l'enceinte (2) avec l'arrivée (12) du second fluide.Device according to claim 1, characterized in that the control members (20) are formed, on the one hand, by a non-return valve (21) mounted on the first pipe (15) connecting the enclosure (2 ) with the arrival (10) of the first fluid and, on the other hand, by a rupture disc (24) mounted on the second pipe (16) connecting the enclosure (2) with the arrival (12) of the second fluid. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier fluide est formé par un gaz par exemple un gaz naturel ou synthétique à bas point d'ébullition.Device according to any one of the preceding claims, characterized in that the first fluid is formed by a gas, for example a natural or synthetic gas with low boiling point. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le second fluide est formé par un gaz de refroidissement.Device according to any one of Claims 1 to 6, characterized in that the second fluid is formed by a cooling gas.
EP95400930A 1994-04-29 1995-04-25 Apparatus for pressurizing a stack of plates, more particularly for a plate-like heat exchanger Expired - Lifetime EP0679852B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9405270 1994-04-29
FR9405270A FR2719368B1 (en) 1994-04-29 1994-04-29 Device for pressurizing a bundle of plates, in particular for a plate heat exchanger.

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EP0679852A1 true EP0679852A1 (en) 1995-11-02
EP0679852B1 EP0679852B1 (en) 1998-05-27

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US (1) US5630475A (en)
EP (1) EP0679852B1 (en)
JP (1) JP3644719B2 (en)
AU (1) AU1656495A (en)
DE (1) DE69502659T2 (en)
FR (1) FR2719368B1 (en)

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WO2011047677A3 (en) * 2009-10-24 2012-05-18 Westcome Renewable A/S System for heat exchange of pressurized substance
CN111735273A (en) * 2019-03-25 2020-10-02 中石化广州工程有限公司 BOG recondensor and BOG recondensation method
CN111735274A (en) * 2019-03-25 2020-10-02 中石化广州工程有限公司 BOG recondensor and BOG recondensation method
CN112254435A (en) * 2020-09-29 2021-01-22 北京航天发射技术研究所 Deep supercooling liquid oxygen preparation system and preparation method
FR3100609A1 (en) * 2019-09-09 2021-03-12 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Device, installation and method of heat exchange.

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US6194609B1 (en) 1997-06-30 2001-02-27 Bp Amoco Corporation Crystallization in a plate heat exchanger
AU7725798A (en) * 1997-06-30 1999-01-19 Bp Amoco Corporation Crystallization in a plate heat exchanger
DE10046691C1 (en) * 2000-09-21 2002-04-25 Xcellsis Gmbh Device used as a reformer for a gas production system of a fuel arrangement has intermediate chambers filled with a porous material formed between one plate and the end plate
US6983890B2 (en) * 2002-01-21 2006-01-10 Webasto Thermosysteme International Gmbh Vehicle heating appliance with a valve in the fuel supply
US7266976B2 (en) * 2004-10-25 2007-09-11 Conocophillips Company Vertical heat exchanger configuration for LNG facility
GB2463698B (en) * 2008-09-23 2010-12-01 Dyson Technology Ltd A fan

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011047677A3 (en) * 2009-10-24 2012-05-18 Westcome Renewable A/S System for heat exchange of pressurized substance
CN111735273A (en) * 2019-03-25 2020-10-02 中石化广州工程有限公司 BOG recondensor and BOG recondensation method
CN111735274A (en) * 2019-03-25 2020-10-02 中石化广州工程有限公司 BOG recondensor and BOG recondensation method
CN111735273B (en) * 2019-03-25 2021-12-31 中石化广州工程有限公司 BOG recondensor and BOG recondensation method
CN111735274B (en) * 2019-03-25 2022-01-04 中石化广州工程有限公司 BOG recondensor and BOG recondensation method
FR3100609A1 (en) * 2019-09-09 2021-03-12 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Device, installation and method of heat exchange.
CN112254435A (en) * 2020-09-29 2021-01-22 北京航天发射技术研究所 Deep supercooling liquid oxygen preparation system and preparation method

Also Published As

Publication number Publication date
JP3644719B2 (en) 2005-05-11
DE69502659T2 (en) 1998-11-26
FR2719368B1 (en) 1996-07-19
JPH0861870A (en) 1996-03-08
AU1656495A (en) 1995-11-09
DE69502659D1 (en) 1998-07-02
US5630475A (en) 1997-05-20
FR2719368A1 (en) 1995-11-03
EP0679852B1 (en) 1998-05-27

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