EP1934476B1 - Installation for high pressure compression with several stages - Google Patents

Installation for high pressure compression with several stages Download PDF

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Publication number
EP1934476B1
EP1934476B1 EP06790454A EP06790454A EP1934476B1 EP 1934476 B1 EP1934476 B1 EP 1934476B1 EP 06790454 A EP06790454 A EP 06790454A EP 06790454 A EP06790454 A EP 06790454A EP 1934476 B1 EP1934476 B1 EP 1934476B1
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EP
European Patent Office
Prior art keywords
compressors
compressor
compression
pressure
installation according
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EP06790454A
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German (de)
French (fr)
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EP1934476A1 (en
Inventor
Patrick Marcel Augustin Lelong
Hans Théo MAGITS
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Atlas Copco Crepelle SAS
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Atlas Copco Crepelle SAS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/005—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B25/00—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/06—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/02—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for several pumps connected in series or in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/18—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/56—Number of pump/machine units in operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed

Definitions

  • the present invention relates to a multi-stage high pressure compression installation which consists of at least two compressors which are connected in series by means of a pipe, see US 4033738 which describes the preamble of claim 1.
  • This type of high pressure plant is for example used in the field of the production of PET bottles which requires the use of compressed gases with a pressure above 2000 kPa.
  • a second reservoir is preferably provided here which serves as a buffer for a network of users.
  • the drive of the first compressor is controlled on the basis of the pressure prevailing in the aforementioned first reservoir, while the drive of the overpressure compressor is controlled on the basis of the pressure prevailing in the second tank.
  • the above-mentioned control involves the fact that a compressor concerned does not rotate under load, and therefore compresses gas, only when the pressure in the corresponding reservoir is lower than a preset pressure.
  • a disadvantage associated with a high-pressure compression installation of the known type lies in the fact that this installation has a relatively low reaction rate to large fluctuations in the consumption of the compressed gas.
  • the pressure in the second reservoir will drop until a value lower than the level previously set for the switching of the overpressure compressor to switch to a load regime.
  • the overpressure compressor rotates under load, it sucks up a quantity of the compressed gases from the first reservoir, which, in a second step, the gas pressure prevailing in this first reservoir drops to a value lower than the level set at beforehand, so that the first compressor is loaded accordingly too.
  • the gas pressure at the output of the compressor overpressure will not be constant at first and that until the first compressor rotates at full speed and therefore produces a quantity of compressed gas equal to the amount of gas sucked by the compressor overpressure for the subsequent compression of said gas.
  • Another drawback related to a known multi-stage compression installation lies in the fact that the first reservoir between the two compressors must be relatively large in order to prevent, during the charging of the superpressure compressor, the consumption of all the compressors. of gas prevailing in the first tank before charging the first compressor.
  • the object of the present invention is to provide a solution to one or more of the mentioned disadvantages as well as others.
  • the present invention relates to a multi-stage high pressure compression installation which consists mainly of a main gas pipeline which opens into a buffer and in which at least two compressors are connected in series with each their own drive, the installation being equipped with means for determining the pressure prevailing at the outlet of the main pipe, said installation being connected to a control box, characterized in that this control box is connected to at least two of the aforesaid compressor drives and in that it provides a control of the compressors such that the latter rotate together under load or together without load and compress the same amount of air per unit of time.
  • An advantage of the present invention lies in the fact that the different compressors are jointly loaded on the basis of the pressure prevailing in the aforementioned buffer tank, so that when loading the compressor which represents the stage In an automatic manner, compressors located in the lower compression stages are jointly loaded.
  • the joint loading of the various compressors makes it possible to maintain constant, or almost constant, the pressure prevailing between each of the different compressors, so that one is confronted with relatively small fluctuations of the gas pressure at the exit of a compressor.
  • multi-stage compressor according to the invention.
  • An additional advantage related to a multi-stage compression installation according to the invention, in which the different compressors are controlled to be driven simultaneously, lies in the fact that the quantity of gas to be provided between the two compressors is relatively small, since the consumption of compressed gas by a compressor can always be compensated by the supply of compressed gas by the compressor of the previous stage.
  • Another advantage of a multi-stage compression installation according to the invention lies in the fact that a single pressure sensor can suffice for its control, where the known multi-stage compressors are equipped with a pressure sensor by compression stage.
  • a high-pressure multi-stage compression installation 1 consists mainly of a main gas pipeline 2 which opens into a buffer 3 and in which, in this case, two volumetric compressors 4 and 5 are mounted in series.
  • the first compressor 4 is for example a screw compressor which serves as a low pressure compression stage
  • the second compressor 5, which is also called the superpressure compressor is for example a piston compressor which serves as a compressor. high pressure compression stage.
  • the aforementioned buffer 3 can be made in the form of a reservoir or the like which is connected to a user network 6 and in which, preferably, means 7 are provided which make it possible to determine the gas pressure prevailing in the reservoir. and which are connected to a control box 8 which is for example an electronic box.
  • the aforementioned means 7 for determining the pressure can also be mounted, if desired, at the exit of the main pipe 2 or in the user network 6.
  • the aforementioned means 7 can be made in different forms, for example by a direct measurement of the pressure using a pressure gauge or by means of an algorithm which makes it possible to determine the gas pressure prevailing in the buffer, for example from a measurement of the temperature.
  • the above-mentioned compressors 4 and 5 each respectively have a drive, respectively 9 and 10, which are each connected to the aforementioned control unit 8 and which are for example made by electric motors or other kinds of motors.
  • compressors 4 and 5 are, in the present case, of the fixed speed drive type and they are preferably dimensioned so that, when they are each driven at their fixed drive speed, they both compress one and the same. amount of gas per unit of time.
  • control box 8 thus fulfills, as it were, the role of an electronic transmission shaft connecting the two compressors 4 and 5.
  • the aforementioned control unit 8 is provided with a control such that, when the gas pressure prevailing in the above-mentioned buffer 3 drops below a previously set minimum value, the compressors 4 and 5 are charged, of such so that they compress gas and so that the gas pressure prevailing in the buffer 3 can be re-established.
  • FIG 2 there is shown a variant of a multi-stage compression installation 1 according to the invention, by which the compressors 4 and 5 can be driven at a variable speed and by which the drives of the compressors 4 and 5 are connected to one of the other using an electrical conduit 11 which in the case shown passes through the control box 8.
  • control provided in the control box is such that the compressor 5 which forms the last overpressure stage is driven with a speed which depends on the gas pressure prevailing in the buffer 3, while one or more other compressors 4 in the main pipe 2 are driven according to the drive speed of the aforementioned compressor 5.
  • control is preferably of the type by which the two compressors 4 and 5 compress the same amount of gas per unit time, so that the amount of gas present in the main pipe 2 remains constant, or substantially constant between the two compressors 4 and 5, during normal commissioning of the multi-stage compressor.
  • each of the compressors 4 and 5 can be embodied as one or more elements of compression connected in parallel or in series and driven by the same drive.
  • the low pressure stage and the high pressure stage can be realized as two separate compressor groups which are connected in an electronic manner by a common control unit 8 or by a simple electrical conduit which connects the control boxes. order from each group.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Saccharide Compounds (AREA)

Abstract

A multi-stage compression installation is formed of a main pipe (2) emerging in a baffle plate (3), where at least two compressors (4, 5) are mounted in series each having its own drive member (9, 10). The installation is equipped with a system for determining the pressure at the output of the main pipe (2), the installation being connected to a control box (8). Typically, the control box (8) is connected to at least two of the drive members (9, 10) of the compressors (4, 5) and ensures monitoring of the compressors such that the latter rotate jointly whether charged or uncharged. Thus, the compressors (4, 5) are jointly charged based on the pressure prevailing in the baffle plate (3), such that the charging of the compressor representing the overpressure stage, the compressor(s) of the lower compression stages are automatically and jointly charged.

Description

La présente invention concerne une installation de compression haute pression à plusieurs étages qui est constituée d'au moins deux compresseurs qui sont reliés en série au moyen d'une canalisation, voir US 4033738 qui décrit le préambule de la revendication 1.The present invention relates to a multi-stage high pressure compression installation which consists of at least two compressors which are connected in series by means of a pipe, see US 4033738 which describes the preamble of claim 1.

Ce genre d'installation haute pression est par exemple utilisée dans le domaine de la production des bouteilles en matière PET qui exige l'utilisation des gaz comprimés avec une pression au delà des 2000 kPa.This type of high pressure plant is for example used in the field of the production of PET bottles which requires the use of compressed gases with a pressure above 2000 kPa.

Il est connu, pour la mise en oeuvre de pressions de gaz de 2000 kPa ou plus, de monter en série deux compresseurs volumétriques et de prévoir un premier réservoir à gaz étant prévu à la sortie du premier compresseur, la sortie du réservoir étant raccordée à l'entrée du deuxième compresseur faisant partie de ce que l'on appelle le compresseur à surpression.It is known, for the implementation of gas pressures of 2000 kPa or more, to put in series two volumetric compressors and to provide a first gas tank being provided at the outlet of the first compressor, the outlet of the tank being connected to the inlet of the second compressor forming part of the so-called superpressure compressor.

À la sortie du compresseur à surpression susmentionné, on prévoit, en l'occurrence, de préférence un deuxième réservoir qui fait office de tampon pour un réseau d'utilisateurs.At the outlet of the above-mentioned superpressure compressor, a second reservoir is preferably provided here which serves as a buffer for a network of users.

Dans un compresseur à plusieurs étages connu de ce type, l'entraînement du premier compresseur est commandé sur base de la pression régnant dans le premier réservoir précité, tandis que l'entraînement du compresseur à surpression est commandé sur base de la pression régnant dans le deuxième réservoir.In a known multi-stage compressor of this type, the drive of the first compressor is controlled on the basis of the pressure prevailing in the aforementioned first reservoir, while the drive of the overpressure compressor is controlled on the basis of the pressure prevailing in the second tank.

La commande précitée implique le fait qu'un compresseur concerné ne tourne en charge, et par conséquent ne comprime du gaz, que lorsque la pression régnant dans le réservoir correspondant est inférieure à une pression réglée au préalable.The above-mentioned control involves the fact that a compressor concerned does not rotate under load, and therefore compresses gas, only when the pressure in the corresponding reservoir is lower than a preset pressure.

Un inconvénient lié à une installation de compression à haute pression du type connu réside dans le fait que cette installation possède une vitesse de réaction relativement petite à des fluctuations importantes de la consommation du gaz comprimé.A disadvantage associated with a high-pressure compression installation of the known type lies in the fact that this installation has a relatively low reaction rate to large fluctuations in the consumption of the compressed gas.

En effet, lors d'une soudaine augmentation de la consommation du gaz comprimé, dans un premier temps, la pression régnant dans le deuxième réservoir va chuter jusqu'à l'atteinte d'une valeur inférieure au niveau réglé au préalable pour la commutation du compresseur à surpression pour passer à un régime en charge.Indeed, during a sudden increase in the consumption of the compressed gas, in a first step, the pressure in the second reservoir will drop until a value lower than the level previously set for the switching of the overpressure compressor to switch to a load regime.

Une fois que le compresseur à surpression tourne en charge, il aspire une quantité des gaz comprimés du premier réservoir, d'où, dans un deuxième temps, la pression de gaz régnant dans ce premier réservoir chute pour atteindre une valeur inférieure au niveau réglé au préalable, si bien que le premier compresseur est chargé en conséquence lui aussi.Once the overpressure compressor rotates under load, it sucks up a quantity of the compressed gases from the first reservoir, which, in a second step, the gas pressure prevailing in this first reservoir drops to a value lower than the level set at beforehand, so that the first compressor is loaded accordingly too.

Par la chute de la pression régnant dans le premier réservoir avant la mise en charge du premier compresseur, la pression de gaz régnant à la sortie du compresseur à surpression ne sera pas constante dans un premier temps et cela jusqu'au moment où le premier compresseur tourne à plein régime et produit par conséquent une quantité de gaz comprimé égale à la quantité de gaz aspiré par le compresseur à surpression pour la compression ultérieure dudit gaz.By the pressure falling in the first tank before the loading of the first compressor, the gas pressure at the output of the compressor overpressure will not be constant at first and that until the first compressor rotates at full speed and therefore produces a quantity of compressed gas equal to the amount of gas sucked by the compressor overpressure for the subsequent compression of said gas.

Un autre inconvénient lié à une installation de compression à plusieurs étages connue réside dans le fait que le premier réservoir entre les deux compresseurs doit être relativement grand afin d'empêcher, lors de la mise en charge du compresseur à surpression, la consommation de la totalité du gaz régnant dans le premier réservoir avant la mise en charge du premier compresseur.Another drawback related to a known multi-stage compression installation lies in the fact that the first reservoir between the two compressors must be relatively large in order to prevent, during the charging of the superpressure compressor, the consumption of all the compressors. of gas prevailing in the first tank before charging the first compressor.

Il est clair qu'un réservoir de grandes dimensions de ce type prévu entre les compresseurs augmente l'encombrement de l'installation de compression qui, par le fait même, devient également plus coûteux.It is clear that a large tank of this type provided between the compressors increases the size of the compression installation which, by the same token, also becomes more expensive.

L'objet de la présente invention est d'apporter une solution à un ou plusieurs des inconvénients mentionnés ainsi que d'autres.The object of the present invention is to provide a solution to one or more of the mentioned disadvantages as well as others.

À cet effet, la présente invention concerne une installation de compression haute pression à plusieurs étages qui est constituée principalement d'une canalisation de gaz principale qui débouche dans un tampon et dans laquelle aux moins deux compresseurs sont montés en série avec chacun leur propre entraînement, l'installation étant équipée de moyens pour déterminer la pression régnant à la sortie de la canalisation principale, ladite installation étant raccordée à un boîtier de commande, caractérisée en ce que ce boîtier de commande est relié à aux moins deux des susdits entraînements des compresseurs et en ce qu'il procure une commande des compresseurs telle que ces derniers tournent ensemble en charge ou ensemble sans charge et compriment une même quantité d'air par unité de temps.To this end, the present invention relates to a multi-stage high pressure compression installation which consists mainly of a main gas pipeline which opens into a buffer and in which at least two compressors are connected in series with each their own drive, the installation being equipped with means for determining the pressure prevailing at the outlet of the main pipe, said installation being connected to a control box, characterized in that this control box is connected to at least two of the aforesaid compressor drives and in that it provides a control of the compressors such that the latter rotate together under load or together without load and compress the same amount of air per unit of time.

Un avantage lié à la présente invention réside dans le fait que les différents compresseurs sont mis en charge de manière conjointe sur base de la pression régnant dans le réservoir tampon précité, si bien que lors de la mise en charge du compresseur qui représente l'étage de surpression, de manière automatique, les compresseurs situés dans les étages de compression inférieurs sont mis en charge de manière conjointe.An advantage of the present invention lies in the fact that the different compressors are jointly loaded on the basis of the pressure prevailing in the aforementioned buffer tank, so that when loading the compressor which represents the stage In an automatic manner, compressors located in the lower compression stages are jointly loaded.

La mise en charge conjointe des différents compresseurs permet de maintenir constante, ou pratiquement constante, la pression régnant entre chacun des différents compresseurs, si bien que l'on est confronté à des fluctuations relativement minimes de la pression de gaz à la sortie d'un compresseur à plusieurs étages selon l'invention.The joint loading of the various compressors makes it possible to maintain constant, or almost constant, the pressure prevailing between each of the different compressors, so that one is confronted with relatively small fluctuations of the gas pressure at the exit of a compressor. multi-stage compressor according to the invention.

Un avantage supplémentaire lié à une installation de compression à plusieurs étages selon l'invention, dans lequel les différents compresseurs sont commandés pour être entraînés de manière simultanée, réside dans le fait que la quantité de gaz à prévoir entre les deux compresseurs est relativement minime, puisque la consommation de gaz comprimé par un compresseur peut toujours être compensée par l'alimentation de gaz comprimé par le compresseur de l'étage précédent.An additional advantage related to a multi-stage compression installation according to the invention, in which the different compressors are controlled to be driven simultaneously, lies in the fact that the quantity of gas to be provided between the two compressors is relatively small, since the consumption of compressed gas by a compressor can always be compensated by the supply of compressed gas by the compressor of the previous stage.

Cette réduction de la quantité de gaz que l'on doit prévoir entre les différents compresseurs d'un compresseur à plusieurs étages selon l'invention, par rapport à celle d'un compresseur connu à plusieurs étages, est avantageuse dans le sens où le premier réservoir peut être réalisé de façon à être moins encombrant et peut même être supprimé, ce qui permet d'obtenir des installations à compression à plusieurs étages plus petits et moins coûteux.This reduction in the amount of gas that must be provided between the different compressors of a multistage compressor according to the invention, compared to that of a known multistage compressor, is advantageous in the sense that the first The tank can be made less bulky and can even be removed, resulting in smaller, less expensive, multi-stage compression installations.

Un autre avantage lié à une installation de compression à plusieurs étages selon l'invention réside dans le fait qu'un seul capteur de pression peut suffire pour sa commande, là où les compresseurs connus à plusieurs étages sont équipés d'un capteur de pression par étage de compression.Another advantage of a multi-stage compression installation according to the invention lies in the fact that a single pressure sensor can suffice for its control, where the known multi-stage compressors are equipped with a pressure sensor by compression stage.

Dans le but de mieux indiquer les caractéristiques de la présente invention, on représente ci-après, à titre d'illustration sans aucun caractère limitatif, un exemple d'une installation de compression à haute pression à plusieurs étages selon l'invention, en se référant aux figures annexées dans lesquelles :

  • la figure 1 représente, de manière schématique, une installation de compression à plusieurs étages selon la présente invention;
  • la figure 2 représente une variante de la figure 1.
In order to better indicate the characteristics of the present invention, an exemplary multi-pressure compression installation is illustrated by way of non-limiting illustration. stages according to the invention, with reference to the appended figures in which:
  • the figure 1 schematically represents a multi-stage compression plant according to the present invention;
  • the figure 2 represents a variant of the figure 1 .

Comme représenté dans la figure 1, une installation 1 de compression haute pression à plusieurs étages selon l'invention est constitué principalement d'une canalisation principale à gaz 2 qui débouche dans un tampon 3 et dans laquelle, dans le cas présent, deux compresseurs volumétriques 4 et 5 sont montés en série.As represented in the figure 1 a high-pressure multi-stage compression installation 1 according to the invention consists mainly of a main gas pipeline 2 which opens into a buffer 3 and in which, in this case, two volumetric compressors 4 and 5 are mounted in series.

Le premier compresseur 4 est par exemple un compresseur à vis qui sert d'étage de compression basse pression, tandis que le deuxième compresseur 5, que l'on appelle aussi le compresseur à surpression, est par exemple un compresseur à piston qui sert d'étage de compression haute pression.The first compressor 4 is for example a screw compressor which serves as a low pressure compression stage, while the second compressor 5, which is also called the superpressure compressor, is for example a piston compressor which serves as a compressor. high pressure compression stage.

Le tampon précité 3 peut être réalisé sous la forme d'un réservoir ou analogues qui est raccordée à un réseau d'utilisateurs 6 et dans lequel, de préférence, on prévoit des moyens 7 qui permettent de déterminer la pression de gaz régnant dans le réservoir et qui sont reliés à un boîtier de commande 8 qui est par exemple un boîtier électronique.The aforementioned buffer 3 can be made in the form of a reservoir or the like which is connected to a user network 6 and in which, preferably, means 7 are provided which make it possible to determine the gas pressure prevailing in the reservoir. and which are connected to a control box 8 which is for example an electronic box.

Bien entendu, les moyens précités 7 destinés à la détermination de la pression peuvent également être montés, si on le souhaite, à la sortie de la canalisation principale 2 ou dans le réseau d'utilisateurs 6.Of course, the aforementioned means 7 for determining the pressure can also be mounted, if desired, at the exit of the main pipe 2 or in the user network 6.

Comme il est bien connu, les moyens précités 7 peuvent être réalisés sous différentes formes comme par exemple par une mesure directe de la pression à l'aide d'un manomètre ou bien au moyen d'un algorithme qui permet de déterminer la pression de gaz régnant dans le tampon à partir par exemple d'une mesure de la température.As is well known, the aforementioned means 7 can be made in different forms, for example by a direct measurement of the pressure using a pressure gauge or by means of an algorithm which makes it possible to determine the gas pressure prevailing in the buffer, for example from a measurement of the temperature.

Les compresseurs précités 4 et 5 possèdent chacun respectivement un entraînement, respectivement 9 et 10, qui sont chacun reliés au boîtier de commande précité 8 et qui sont par exemple réalisés par des moteurs électriques ou autre genre de moteurs.The above-mentioned compressors 4 and 5 each respectively have a drive, respectively 9 and 10, which are each connected to the aforementioned control unit 8 and which are for example made by electric motors or other kinds of motors.

Ces compresseurs 4 et 5 sont, dans le cas présent, du type à entraînement à vitesse fixe et ils sont de préférence dimensionnés de telle sorte que, quand ils sont chacun entraîné à leur vitesse d'entraînement fixe, ils compriment tous les deux une même quantité de gaz par unité de temps.These compressors 4 and 5 are, in the present case, of the fixed speed drive type and they are preferably dimensioned so that, when they are each driven at their fixed drive speed, they both compress one and the same. amount of gas per unit of time.

Le boîtier de commande 8 rempli ainsi dans ce cas pour ainsi dire le rôle d'un arbre de transmission électronique reliant les deux compresseurs 4 et 5.In this case, the control box 8 thus fulfills, as it were, the role of an electronic transmission shaft connecting the two compressors 4 and 5.

Le fonctionnement du compresseur à plusieurs étages selon l'invention que l'on a décrit ci-dessus est simple et est tel que repris ci-après.The operation of the multistage compressor according to the invention described above is simple and is as follows.

Le boîtier de commande précité 8 est muni d'une commande telle que, lorsque la pression de gaz régnant dans le tampon précité 3 chute en dessous d'une valeur minimale réglée au préalable, les compresseurs 4 et 5 sont mis en charge, de telle sorte qu'ils compriment du gaz et de telle sorte que la pression de gaz régnant dans le tampon 3 peut à nouveau être rétablie.The aforementioned control unit 8 is provided with a control such that, when the gas pressure prevailing in the above-mentioned buffer 3 drops below a previously set minimum value, the compressors 4 and 5 are charged, of such so that they compress gas and so that the gas pressure prevailing in the buffer 3 can be re-established.

Une fois que la pression de gaz régnant dans le tampon 3 s'est relevée pour prendre une valeur maximale également réglée, les compresseurs précités 4 et 5 sont à nouveau replacés dans un régime sans charge.Once the gas pressure in buffer 3 has risen to a maximum value also set, the The aforementioned compressors 4 and 5 are again placed in a regime without load.

Dans la figure 2, on représente une variante d'une installation de compression à plusieurs étages 1 selon l'invention, par laquelle les compresseurs 4 et 5 peuvent être entraînés à une vitesse variable et par laquelle les entraînements des compresseurs 4 et 5 sont reliés l'un de l'autre à l'aide d'un conduit électrique 11 qui dans le cas représenté passe par le boîtier de commande 8.In the figure 2 , there is shown a variant of a multi-stage compression installation 1 according to the invention, by which the compressors 4 and 5 can be driven at a variable speed and by which the drives of the compressors 4 and 5 are connected to one of the other using an electrical conduit 11 which in the case shown passes through the control box 8.

Dans ce cas, la commande prévue dans le boîtier de commande est telle que le compresseur 5 qui forme le dernier étage de surpression est entraîné avec une vitesse qui dépend de la pression de gaz régnant dans le tampon 3, tandis qu'un ou plusieurs autres compresseurs 4 dans la canalisation principale 2 sont entraînés en fonction de la vitesse d'entraînement du compresseur précité 5.In this case, the control provided in the control box is such that the compressor 5 which forms the last overpressure stage is driven with a speed which depends on the gas pressure prevailing in the buffer 3, while one or more other compressors 4 in the main pipe 2 are driven according to the drive speed of the aforementioned compressor 5.

En l'occurrence, la commande est de préférence du type par lequel les deux compresseurs 4 et 5 compriment une même quantité de gaz par unité de temps, si bien que la quantité de gaz présente dans la canalisation principale 2 reste constante, ou pratiquement constante entre les deux compresseurs 4 et 5, lors d'une mise en service normale du compresseur à plusieurs étages.In this case, the control is preferably of the type by which the two compressors 4 and 5 compress the same amount of gas per unit time, so that the amount of gas present in the main pipe 2 remains constant, or substantially constant between the two compressors 4 and 5, during normal commissioning of the multi-stage compressor.

Il va de soi que, dans la canalisation principale précitée 2, on peut également monter en série plus de deux compresseurs 4, chacun desdits compresseurs 4 étant muni d'un entraînement qui est relié au boîtier de commande 8.It goes without saying that, in the aforementioned main pipe 2, more than two compressors 4 can also be connected in series, each of said compressors 4 being provided with a drive which is connected to the control box 8.

Il est clair que chacun des compresseurs 4 et 5 peut être réalisé sous la forme d'un seul ou de plusieurs éléments de compression reliés en parallèle ou en série et entraînés par un même entraînement.It is clear that each of the compressors 4 and 5 can be embodied as one or more elements of compression connected in parallel or in series and driven by the same drive.

Il est évident que l'étage basse pression et l'étage haute pression peuvent être réalisé comme deux groupes de compresseurs séparés qui sont reliés d'une manière électronique par un boîtier de commande 8 commun ou par une simple conduite électrique qui relie les boîtiers de commande de chaque groupe.It is obvious that the low pressure stage and the high pressure stage can be realized as two separate compressor groups which are connected in an electronic manner by a common control unit 8 or by a simple electrical conduit which connects the control boxes. order from each group.

La présente invention n'est en aucune manière limitée aux formes de réalisation décrites ci-dessus et représentées dans les figures.The present invention is in no way limited to the embodiments described above and shown in the figures.

Claims (9)

  1. Multi-stage high-pressure compression installation which is mainly formed of a main pipe (2) which opens in a buffer (3) and in which at least two compressors (4,5) are mounted in series, each with their own drive (9,10), whereby the installation is equipped with means (7) to determine the pressure prevailing at the output of the main pipe (2), whereby said installation is connected to a control panel (8), characterized in that this control panel (8) is connected to at least two of the aforesaid drives (9,10) of the compressors (4,5) and in that it controls the compressors (4,5) in such a way that they will either both run under load or both run idle and compress the same quantity of air per time unit.
  2. Compression installation according to claim 1, characterized in that said drives (9, 10) of the compressors (4, 5) are variable speed drives.
  3. Compression installation according to claim 1 or 2, characterized in that the control panel (8) is such that the different compressors (4, 5) are driven as a function of the driving speed of the compressor (5) forming the final high-pressure stage.
  4. Compression installation according to claim 1 or 2, characterized in that it comprises only one gas tank.
  5. Compression installation according to any one of the preceding claims, characterized in that each drive (9, 10) of the compressors (4, 5) has its own control board and in that these control boards are part of the control panel (8) of the compression installation.
  6. Compression installation according to any one of the preceding claims, characterized in that each compressor may be composed of a single or of several compression elements that are driven by the drive of the compressor in question.
  7. Compression installation according to any one of the preceding claims, characterized in that at least one of the compressors (4, 5) is a piston compressor.
  8. Compression installation according to any one of the preceding claims, characterized in that at least one of the compressors (4, 5) is a screw-type compressor.
  9. Compression installation according to any one of the preceding claims, characterized in that it is of the type which can compress gas up to a pressure of at least 2000 kPa.
EP06790454A 2005-09-02 2006-09-01 Installation for high pressure compression with several stages Active EP1934476B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0509022A FR2890418A1 (en) 2005-09-02 2005-09-02 HIGH PRESSURE COMPRESSION INSTALLATION WITH MULTIPLE FLOORS
PCT/BE2006/000094 WO2007025357A1 (en) 2005-09-02 2006-09-01 Installation for high pressure compression with several stages

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EP1934476A1 EP1934476A1 (en) 2008-06-25
EP1934476B1 true EP1934476B1 (en) 2009-07-22

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US (1) US8277197B2 (en)
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JP (2) JP5721309B2 (en)
KR (1) KR101012783B1 (en)
CN (2) CN101310110B (en)
AT (1) ATE437306T1 (en)
AU (1) AU2006287134B2 (en)
BR (1) BRPI0615253B1 (en)
DE (1) DE602006008021D1 (en)
ES (1) ES2329718T3 (en)
FR (1) FR2890418A1 (en)
WO (1) WO2007025357A1 (en)

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US11067084B2 (en) 2017-04-10 2021-07-20 Gardner Denver Deutschland Gmbh Pulsation mufflers for compressors
US11193489B2 (en) 2017-04-10 2021-12-07 Gardner Denver Deutschland Gmbh Method for controlling a rotary screw compressor

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US11067084B2 (en) 2017-04-10 2021-07-20 Gardner Denver Deutschland Gmbh Pulsation mufflers for compressors
US11193489B2 (en) 2017-04-10 2021-12-07 Gardner Denver Deutschland Gmbh Method for controlling a rotary screw compressor

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JP5715183B2 (en) 2015-05-07
BRPI0615253A8 (en) 2019-01-29
US8277197B2 (en) 2012-10-02
US20090304522A1 (en) 2009-12-10
JP2009507155A (en) 2009-02-19
KR101012783B1 (en) 2011-02-08
KR20080093091A (en) 2008-10-20
DE602006008021D1 (en) 2009-09-03
CN101310110A (en) 2008-11-19
JP2013174244A (en) 2013-09-05
BRPI0615253B1 (en) 2019-07-09
JP5721309B2 (en) 2015-05-20
WO2007025357A1 (en) 2007-03-08
CN101310110B (en) 2011-07-20
ES2329718T3 (en) 2009-11-30
CN102155396A (en) 2011-08-17
EP1934476A1 (en) 2008-06-25
AU2006287134A1 (en) 2007-03-08
ATE437306T1 (en) 2009-08-15
FR2890418A1 (en) 2007-03-09
CN102155396B (en) 2013-06-19
AU2006287134B2 (en) 2011-04-21
BRPI0615253A2 (en) 2011-05-10

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