CN1451528A - 用于调节流体的流量和/或压力的装置 - Google Patents

用于调节流体的流量和/或压力的装置 Download PDF

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CN1451528A
CN1451528A CN03122903A CN03122903A CN1451528A CN 1451528 A CN1451528 A CN 1451528A CN 03122903 A CN03122903 A CN 03122903A CN 03122903 A CN03122903 A CN 03122903A CN 1451528 A CN1451528 A CN 1451528A
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A·迪皮伊
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    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4289—Valve constructions or configurations, e.g. arranged to reduce blowing fluid consumption
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    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2582—Including controlling main line flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T137/00—Fluid handling
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    • Y10T137/2605—Pressure responsive
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
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    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/264—Electrical control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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Abstract

本发明涉及一种用于调节从一高压储器(H)向另一储器(S)输送的流体的流量和/或压力的装置。该装置的一个第一阀门(1)配有安装在连接两个储器(H，S)的管路(10，11，12)上的控制装置(2)，设置在所述第一阀门(1)的下游的一个拉瓦尔喷管(3)配有一个电的压力降传感器(4)，配有一个控制装置(6)的一个第二阀门(5)连接在所述拉瓦尔喷管(3)的下游部分和一个排气节流孔元件(R)之间，一个微程序控制系统(7)设计成能够接收压力降传感器(4)读取的数值并能驱动两个阀门(1，5)的两个控制装置(2，6)，这就使得能够调节从第一储器(H)向第二储器(S)输送的流体的流量和/或压力。

Description

用于调节流体的流量和/或压力的装置
发明领域
本发明涉及用于调节从一个高压储器向另一个储器输送的流体的流量和/或压力的装置。
技术背景
在某些应用中，重要的是，一方面，要能够知道以高压供应的流体特别是气体的流量，另一方面，要能够根据具体应用场合调节这种流量以及压力。
现在用一个非限制性的例子来说明，我们来考虑用诸如PET的聚合材料吹塑模制容器的情况。其中重要的是，例如在预吹阶段，要能够控制空气流量，而后，在吹气模制阶段，要能够控制容器承受的压力，最后，在膨胀阶段，要能够控制压力的降低速率。
在这一特定应用中，既能够控制预吹过程中的流量又能够控制吹气模制过程中的压力是非常重要的特点，因为如果这两个参数控制不好就会导致在制造容器时出现灾难性的后果和原材料的损失。
发明概要
本发明的目的是提供一种用于调节从一个高压储器向另一个储器输送的流体的流量和/或压力的装置。
本发明的装置的特点在于，它包括：一个第一阀门，该阀门配有一个安装在连接所述两个储器的一条管路上的控制装置；一个位于该第一阀门下游并配有一电的压力降传感器的拉瓦尔喷管；一个第二阀门，该阀门配有一个连接在拉瓦尔喷管的下游部分和一排气节流孔元件之间的控制装置；以及一个微程序控制系统，其设计成能够接收压力降传感器读取的数值并驱动所述两个阀门的两个控制装置，以便调节从所述第一储器向所述第二储器输送的流体的流量和/或压力。
这一简单的解决办法的优点是，采用本领域内众所周知的拉瓦尔喷管装置，尽管是在高压下，来得到层流状态，以使得能够精确测量该喷管的两端口处的压差，从而借以精确计算流量，以及随后能够将计算出的流量反馈给所述两个阀门，以便调节至所需要的流量和压力。
按照本发明的一个变型实施例，所述两个阀门是由电磁器件更具体地说是由电磁铁控制的电磁阀。
按照本发明的一个变型实施例，所述流体是气体，而所述压力是在1至100巴之间。
本发明也涉及这一装置在吹塑模制诸如PET的聚合材料容器的具体情况中的应用，其用于控制用聚合材料吹塑模制空心壳体的三个阶段：
——预吹阶段，在这一阶段中，所述微程序控制系统通过测量拉瓦尔喷管的两端口处的压力降并通过作用于所述第一电磁阀的控制装置来调节流经一工作节流孔元件流向所述第二储器的空气的流量；
——吹气模制阶段，在这一阶段中，所述微程序控制系统根据拉瓦尔喷管的两端口处的压力读数并通过作用于所述两电磁阀的控制装置来调节连接于所述第二储器的所述工作节流孔元件处的空气压力；以及最后，
——膨胀阶段，在这一阶段中，所述微程序控制系统根据拉瓦尔喷管的两端口处的压力读数并通过驱动所述第二电磁阀的电磁控制装置来逐渐地降低所述工作节流孔元件和所述排气节流孔元件之间的压力。
按照一种应用变型，在预吹过程中，通过读取伸张杆的位置信号而使空气流量与所述伸张杆的运动同步。
下面将借助于附图更详细地叙述本发明。
附图说明
图1示意地示出了本发明的吹塑模制设备的主要元件。
图2示出的是同一设备，其中与图1不同的是，在预吹过程中空气流量与所述伸张杆的位置同步。
实施例的详细说明
参见图1，一个高压储器H经由一供给节流孔元件P和一管路10，11，12，以及一工作节流孔元件A连通于一储器S。储器S是一个空心的壳体，其内部将被吹入一定量的气体，以便使所需要的容器靠壳体内壁成形。一个具有其控制装置2的电磁阀1连接在管路的管段10和11之间，一个拉瓦尔喷管3和一个压力降传感器4安装在管段11上。在管段11和12之间，一管路14连接于一第二电磁阀5及其控制装置6，一管路15将电磁阀5的另一端连接于排气节流孔元件R。最后，一个微程序控制系统7接收由压力降传感器读取的数据并通过线路8和9控制阀门1和5的电磁控制元件2和6。我们用一圈点划线把本发明的装置围了起来，其实质上对应于一个包括上述各元件的整体。
下面我们将简要说明怎样按照其工艺过程的三个阶段，即预吹，吹气模制和膨胀，进行PET容器的制造。
在第一即预吹阶段，需要从供给节流孔元件P向工作节流孔元件A提供空气流，而这要靠由传感器装置4读取拉瓦尔喷管3的两端口处的压力降来做到。根据这一读数，微程序控制系统7控制电磁阀1，以使之能按照预先建立的程序供给空气流量。当预吹阶段结束时，吹气模制阶段即开始，在这一阶段中，重要的是要调节连接于储器S的工作节流孔元件A处的空气压力，这一调节是依靠读取拉瓦尔喷管3的两端口处的压力和由微程序控制系统7接收压力降数值并根据预先建立的程序控制两个阀门1和5来调节这一压力来做到。
最后是膨胀阶段，在这一阶段中，储器S内的压力必须以类似的方式逐渐地降低，这取决于拉瓦尔喷管3的两端口处的压力读数，微程序控制系统7控制着阀门5的开启度，而在节流孔元件A和R之间的阀门5的开启使得可以降低储器S内的压力。
参照图2，其示出了与上述相同的设备，只是其中附加介绍了在预吹过程中使空气流量与用于伸张预成形件16的伸张杆17的位置同步的可能性。特别是，大家知道，在预吹PET之类聚合材料的步骤中，插入空心壳体S内的聚合材料预成形件16是需要用一伸张杆17来进行沿X方向的伸张，而吹入的气体使预成形件径向即沿Y方向伸张。本发明提出，通过用传感器装置4读取拉瓦尔喷管3的两端口处的压力降使预吹过程中的气体流量和伸张杆17的位置信号同步。这两个读数使得能
够根据一预先建立的程序达到最佳的自动同步。

Claims (5)

1.一种用于调节从一个高压储器(H)向另一个储器(S)输送的流体的流量和/或压力的装置，它包括：一个第一阀门(1)，该阀门配有一个安装在连接所述两个储器(H，S)的一条管路(10，11，12)上的一个控制装置(2)；一个位于所述第一阀门(1)的下游并配有一个电的压力降传感器(4)的拉瓦尔喷管(3)；一个第二阀门(5)，该阀门配有一个连接在所述拉瓦尔喷管(3)的下游部分和一个排气节流孔元件(R)之间的控制装置(6)；以及一个微程序控制系统(7)，其设计成能够接收压力降传感器(4)读取的数值并驱动所述两个阀门(1，5)的两个控制装置(2，6)，这样便能调节从所述第一储器(H)向所述第二储器(S)输送的流体的流量和/或压力。
2.如权利要求1所述的装置，其特征在于，所述两个阀门(1，5)是电磁阀，它们的所述控制装置(2，6)是电磁器件。
3.如权利要求1或2所述的装置，其特征在于，所述流体是压力处于1至100巴之间的气体。
4.如权利要求3所述的装置的应用，其特征在于，它是用于控制用诸如PET的聚合材料吹塑模制空心壳体的三个阶段：
——预吹阶段，在这一阶段中，所述微程序控制系统(7)通过测量拉瓦尔喷管(3)的两端口处的压力降并通过作用于所述第一电磁阀(1)的所述控制装置(2)来调节流经一工作节流孔元件(A)流向所述第二储器(S)的空气的流量；
——吹气模制阶段，在这一阶段中，所述微程序控制系统(7)根据所述拉瓦尔喷管(3)的两端口处的压力读数并通过作用于所述两电磁阀(1，5)的控制装置(2，6)来调节连接于所述第二储器(S)的所述工作节流孔元件(A)处的空气压力；以及最后，
——膨胀阶段，在这一阶段中，所述微程序控制系统(7)根据拉瓦尔喷管(3)的两端口处的压力读数并通过驱动所述第二电磁阀(5)的电磁控制装置(6)来逐渐地降低所述工作节流孔元件(A)和所述排气节流孔元件(R)之间的压力。
5.如权利要求4所述的应用，其特征在于，在预吹过程中，通过读取所述伸张杆的位置信号而使空气流量与所述伸张杆的运动同步。
CNB031229034A 2002-04-19 2003-04-17 用于调节流体的流量和/或压力的装置 Expired - Fee Related CN100363169C (zh)

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FR0204960A FR2838839B1 (fr) 2002-04-19 2002-04-19 Dispositif de regulation du debit et/ou de la pression d'un fluide

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CN101547782B (zh) * 2006-12-05 2013-02-06 西德尔合作公司 按坯件扩展终止点反馈调节方式由坯件制造容器的方法
CN105415648A (zh) * 2014-07-25 2016-03-23 Khs科波普拉斯特有限责任公司 体积可控的吹塑空气输送
CN106124795A (zh) * 2016-08-17 2016-11-16 凯迈（洛阳）气源有限公司 一种陀螺轮转速测试装置及其吹气系统
CN109269760A (zh) * 2018-11-15 2019-01-25 中国航空工业集团公司沈阳空气动力研究所 一种基于熵增原理的高压管道快速降压装置

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FR2909305B1 (fr) 2006-12-05 2009-03-27 Sidel Participations Procede de fabrication d'un recipient a partir d'une ebauche, avec retroaction en fonction du point de developpement de l'ebauche.
FR2909304B1 (fr) * 2006-12-05 2009-03-27 Sidel Participations Procede de fabrication de recipients avec retroaction en fonction du point de debut de presoufflage
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101203371B (zh) * 2005-08-12 2012-09-19 西德尔合作公司 容器吹制设备的流体流量控制组件以及具有这种组件的设备
CN101547782B (zh) * 2006-12-05 2013-02-06 西德尔合作公司 按坯件扩展终止点反馈调节方式由坯件制造容器的方法
CN105415648A (zh) * 2014-07-25 2016-03-23 Khs科波普拉斯特有限责任公司 体积可控的吹塑空气输送
CN105415648B (zh) * 2014-07-25 2019-07-09 Khs科波普拉斯特有限责任公司 体积可控的吹塑空气输送
CN106124795A (zh) * 2016-08-17 2016-11-16 凯迈（洛阳）气源有限公司 一种陀螺轮转速测试装置及其吹气系统
CN106124795B (zh) * 2016-08-17 2022-07-29 凯迈（洛阳）气源有限公司 一种陀螺轮转速测试装置及其吹气系统
CN109269760A (zh) * 2018-11-15 2019-01-25 中国航空工业集团公司沈阳空气动力研究所 一种基于熵增原理的高压管道快速降压装置

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FR2838839A1 (fr) 2003-10-24
ATE512395T1 (de) 2011-06-15
US20030209266A1 (en) 2003-11-13
EP1355215A1 (fr) 2003-10-22
FR2838839B1 (fr) 2004-07-09
US6932102B2 (en) 2005-08-23
EP1355215B1 (fr) 2011-06-08
ES2363968T3 (es) 2011-08-22
CN100363169C (zh) 2008-01-23

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