JP2935648B2 - Gas collecting device for hot isostatic pressurizing device - Google Patents
Gas collecting device for hot isostatic pressurizing deviceInfo
- Publication number
- JP2935648B2 JP2935648B2 JP11858095A JP11858095A JP2935648B2 JP 2935648 B2 JP2935648 B2 JP 2935648B2 JP 11858095 A JP11858095 A JP 11858095A JP 11858095 A JP11858095 A JP 11858095A JP 2935648 B2 JP2935648 B2 JP 2935648B2
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- Japan
- Prior art keywords
- gas
- pressure
- valve
- cylinder
- outlet
- 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.)
- Expired - Lifetime
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- Powder Metallurgy (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、不活性ガスを利用した
熱間静水圧加圧装置に接続され、圧力媒体用ガスの置換
と、ボンベ圧力及び圧縮機圧力による加圧と、さらに差
圧回収とを行わせることによって不活性ガスの再利用を
可能としたガス集合装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot isostatic pressurizing apparatus utilizing an inert gas, which replaces a gas for a pressure medium, pressurizes with a cylinder pressure and a compressor pressure, and further includes a differential pressure. The present invention relates to a gas collecting apparatus that enables the reuse of an inert gas by performing recovery.
【０００２】[0002]
【従来の技術】各種金属、セラミックス等の焼結、成
形、緻密化などの処理に用いられる熱間静水圧加圧装置
（以下、ＨＩＰと略記する）では、従来からＡｒ、また
はＮ2 ガスの不活性ガスを圧力媒体として使用してい
る。これらのガスは、ＨＩＰに接続したガス集合装置に
充填されて、ＨＩＰの圧力容器内を清浄するためのガス
置換工程、圧力容器内を高圧に保持するための加圧工程
においてガス集合装置から圧力容器内に導入される。こ
の場合、ガス置換は、その目的からして置換に使用した
ガスについては全量を放出するのが普通である。一方、
加圧工程に使用したガスは、昇温及び加圧保持してＨＩ
Ｐ処理サイクルが完了した後に再利用するため、ＨＩＰ
内の圧力容器とガス集合装置との圧力差を利用してガス
集合装置に回収（差圧回収）している。さらに、ガス集
合装置に設けられる圧縮機を利用して圧力容器からガス
集合装置に回収（強制回収）している。また、この回収
運転時において回収不能となったガスは大気中に放出さ
れる。2. Description of the Related Art A hot isostatic press (hereinafter abbreviated as HIP) used for sintering, molding, and densifying various metals, ceramics, and the like has been conventionally used in the production of Ar or N2 gas. Active gas is used as pressure medium. These gases are charged into a gas collecting device connected to the HIP, and are subjected to pressure from the gas collecting device in a gas replacement step for cleaning the inside of the pressure vessel of the HIP and a pressurizing step for keeping the inside of the pressure vessel at a high pressure. Introduced into the container. In this case, gas replacement usually releases all the gas used for the replacement for that purpose. on the other hand,
The gas used in the pressurization process is heated and pressurized to maintain HI
HIP for reuse after P processing cycle is completed
The gas is collected in the gas collecting device (differential pressure recovery) using the pressure difference between the internal pressure vessel and the gas collecting device. Further, the gas is collected from the pressure vessel to the gas collecting device (compulsory recovery) using a compressor provided in the gas collecting device. The gas that cannot be recovered during the recovery operation is released to the atmosphere.
【０００３】このようなガス置換及びガス回収は、従来
はできるだけ多くのガスを回収しようとするために、、
ガス集合装置における複数のガスボンベに圧力差をつけ
て、回収運転時に圧力レベルが高い方のボンベから順番
に圧力容器に接続して差圧回収し、最後に強制回収によ
って回収を行っている。[0003] Such gas replacement and gas recovery have hitherto attempted to recover as much gas as possible.
A pressure difference is applied to a plurality of gas cylinders in the gas collecting device, and during the recovery operation, the cylinders having a higher pressure level are sequentially connected to the pressure vessel to recover the differential pressure, and finally the recovery is performed by forced recovery.
【０００４】[0004]
【発明が解決しようとする課題】この場合、従来では圧
力差がついている各ガスボンベを手動操作形の開閉弁を
介して圧力容器に接続し、各開閉弁を順番に切換え操作
することによって回収を行っていたが、この操作には相
当な熟練が必要で取扱者が限られるし、切換えのタイミ
ングが正しく行われなければ回収率が低下する問題があ
り、さらに、１００％の回収ができないために、何度も
回収をしている間にガスボンベ群の圧力が下がってゆ
き、この圧力を回復させることができないために、特に
加圧工程に使用するガスボンベの圧力が低下してくる
と、所定の圧力まで上げるための加圧時間が長くなって
くる。そのため、圧縮機の稼働時間が延び、また、ＨＩ
Ｐの運転効率が悪くなる等の不都合が生じる。In this case, each gas cylinder having a conventional pressure difference is connected to a pressure vessel via a manually operated on-off valve, and the on-off valves are sequentially switched to perform recovery. However, this operation requires considerable skill and the number of operators is limited, and if the switching timing is not properly performed, there is a problem that the recovery rate is reduced. Further, 100% recovery cannot be performed. However, since the pressure of the gas cylinder group decreases during repeated collection, and it is not possible to recover the pressure, especially when the pressure of the gas cylinder used in the pressurizing step decreases, a predetermined The pressurization time for raising the pressure becomes longer. Therefore, the operating time of the compressor is extended, and the HI
There are inconveniences such as poor operation efficiency of P.
【０００５】本発明は、このような問題点の解消を図る
ために成されたものであり、本発明の目的は、ガス集合
装置における加圧のために使用するガスボンベを圧力容
器に自動接続切換えできるようにし、また、圧力を低下
しないようにできるだけ高く維持するようにすることに
よって、加圧時間を短縮し得るようにして、もって、Ｈ
ＩＰ運転の高効率化ならびに運転コストの低減化を図る
ことにある。The present invention has been made to solve such problems, and an object of the present invention is to automatically connect and switch a gas cylinder used for pressurization in a gas collecting device to a pressure vessel. And by keeping the pressure as high as possible so as not to drop, so that the pressurization time can be reduced,
An object of the present invention is to improve the efficiency of the IP operation and reduce the operation cost.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記の目的を
達成するため以下に述べる構成としたものである。即
ち、本発明は、熱間静水圧加圧装置のガス取合い口にガ
ス取合いラインによって接続され、圧力媒体用ガスの置
換と、ボンベ圧力及び圧縮機圧力による加圧と、差圧回
収とを行わせるガス集合装置であって、複数基のガスボ
ンベを等圧力レベル毎のグループに分け、かつ、グルー
プ単位に電気駆動形の出口用開閉弁をそれぞれ介しガス
取合いラインの反ガス取合い口側端部に接続して、圧力
レベルが相互に異なる複数系統のガス分枝ラインが設け
られるガスボンベ群と、前記ガス取合い口のガス圧力を
検出する圧力容器圧力検出手段と、ガス取合いラインの
反ガス取合い口側端部のガス圧力を検出するボンベ圧力
検出手段と、圧力容器圧力検出手段及びボンベ圧力検出
手段からのガス圧力信号が導入され、両圧力信号の差の
バランスに応じて、ガス加圧運転時には圧力が低い方の
ボンベグループから昇圧順に出口用開閉弁に開弁出力を
与え、差圧回収運転時には圧力が高い方のボンベグルー
プから降圧順に出口用開閉弁に開弁出力を与える開閉弁
制御手段とを含むことを特徴とする熱間静水圧加圧装置
のガス集合装置である。The present invention has the following configuration to achieve the above object. That is, the present invention is connected to the gas inlet of the hot isostatic pressurization device by the gas inlet line, and performs the replacement of the pressure medium gas, the pressurization by the cylinder pressure and the compressor pressure, and the differential pressure recovery. A plurality of gas cylinders are divided into groups for each equal pressure level, and each group is connected to an end of the gas connection line on the opposite side of the gas connection port via an electrically driven outlet open / close valve. A gas cylinder group provided with a plurality of gas branch lines connected to each other and having different pressure levels, a pressure vessel pressure detecting means for detecting a gas pressure of the gas inlet, and an anti-gas inlet side of the gas inlet line The gas pressure signal from the cylinder pressure detecting means for detecting the gas pressure at the end, and the gas pressure signals from the pressure vessel pressure detecting means and the cylinder pressure detecting means are introduced. During the gas pressurization operation, the valve output is given to the outlet on / off valve in descending order of pressure from the cylinder group with the lower pressure, and during the differential pressure recovery operation, the valve opening output is outputted to the outlet on / off valve in descending pressure from the cylinder group with the higher pressure. And an on-off valve control means for providing a gas pressure in the hot isostatic pressurizing apparatus.
【０００７】本発明はまた、熱間静水圧加圧装置のガス
取合い口にガス取合いラインによって接続され、圧力媒
体用ガスの置換と、ボンベ圧力及び圧縮機圧力による加
圧と、差圧回収とを行わせるガス集合装置であって、複
数基のガスボンベを等圧力レベル毎のグループに分け、
かつ、グループ単位に電気駆動形の出口用開閉弁をそれ
ぞれ介しガス取合いラインの反ガス取合い口側端部に接
続して、圧力レベルが相互に異なる複数系統のガス分枝
ラインが設けられるガスボンベ群と、このガスボンベ群
の最低圧力レベルよりも高い圧力レベルのガスが充填さ
れて、ガス取合いラインの反ガス取合い口側端部に電気
駆動形の補充用開閉弁を介して接続される補充用ガスボ
ンベと、前記ガス取合い口のガス圧力を検出する圧力容
器圧力検出手段と、ガス取合いラインの反ガス取合い口
側端部のガス圧力を検出するボンベ圧力検出手段と、圧
力容器圧力検出手段及びボンベ圧力検出手段からのガス
圧力信号が導入され、ガス置換運転時においてこの運転
によって生じる回収不能分に相当するガス消費量を演算
する演算手段と、圧力容器圧力検出手段及びボンベ圧力
検出手段からのガス圧力信号が導入され、両圧力信号の
差のバランスに応じて、ガス加圧運転時には圧力が低い
方のボンベグループから昇圧順に出口用開閉弁に開弁出
力を与え、差圧回収運転時には圧力が高い方のボンベグ
ループから降圧順に出口用開閉弁に開弁出力を与え、ガ
ス加圧運転時には更に、前記演算手段からのガス消費量
信号が導入され、補充用ガスボンベの補充用開閉弁に前
記ガス消費量に見合って開弁させるための開弁出力を与
える開閉弁制御手段とを含むことを特徴とする熱間静水
圧加圧装置のガス集合装置である。The present invention is also connected to a gas inlet of a hot isostatic pressurizing device by a gas connecting line, and is used to replace a gas for a pressure medium, pressurize with a cylinder pressure and a compressor pressure, and collect a differential pressure. A plurality of gas cylinders are divided into groups for each equal pressure level,
A gas cylinder group in which a plurality of gas branch lines having different pressure levels are connected to the end of the gas intake line on the side opposite to the gas intake port via an electrically driven outlet on-off valve for each group. Gas at a pressure level higher than the lowest pressure level of the gas cylinder group, and a refill gas cylinder connected to an end of the gas connection line on the side opposite to the gas inlet via an electrically driven refill valve. Pressure vessel pressure detecting means for detecting the gas pressure of the gas inlet, cylinder pressure detecting means for detecting the gas pressure at the end opposite to the gas inlet of the gas fitting line, pressure vessel pressure detecting means and cylinder pressure A gas pressure signal from the detection means is introduced, and at the time of a gas replacement operation, a calculation means for calculating a gas consumption amount corresponding to an unrecoverable portion generated by the operation, Gas pressure signals from the pressure vessel pressure detection means and the cylinder pressure detection means are introduced, and in accordance with the balance of the difference between the two pressure signals, during gas pressurization operation, the gas pressure signal is supplied from the lower cylinder group to the outlet on-off valve in the order of increasing pressure. During the differential pressure recovery operation, the valve opening output is applied to the outlet on-off valve in descending pressure order from the cylinder group having the higher pressure, and the gas consumption signal from the arithmetic unit is further introduced during the gas pressurization operation. An on-off valve control means for providing an opening output to the replenishing on-off valve of the replenishing gas cylinder in accordance with the gas consumption, and a gas collection of the hot isostatic pressurizing device. Device.
【０００８】本発明はまた、前記ガス集合装置におい
て、開閉弁制御手段が、補充用ガスボンベの圧力レベル
よりも低いボンベグループによりボンベ圧力で行うガス
加圧運転時において、補充用開閉弁に開弁出力を与える
ように形成されることを特徴とする、また本発明は、前
記ガス集合装置において、開閉弁制御手段が、圧縮機圧
力で行うガス加圧運転時において、補充用開閉弁に開弁
出力を与えるように形成されることを特徴とする。According to the present invention, in the gas collecting apparatus, the on-off valve control means may open the refilling on-off valve during a gas pressurizing operation performed at a cylinder pressure by a cylinder group lower than the pressure level of the refilling gas cylinder. In the gas collecting apparatus, the on-off valve control means may open the replenishing on-off valve during the gas pressurizing operation performed at the compressor pressure. It is characterized by being formed to give an output.
【０００９】[0009]
【作用】本発明によれば、複数基のガスボンベを等圧力
レベル毎のグループに分け、かつ、グループ単位に電気
駆動形の出口用開閉弁をそれぞれ介しガス取合いライン
の反ガス取合い口側端部に接続して、圧力レベルが相互
に異なる複数系統のガス分枝ラインを備えるガスボンベ
群と、ガス加圧運転時には圧力が低い方のボンベグルー
プから昇圧順に出口用開閉弁に開弁出力を与え、差圧回
収運転時には圧力が高い方のボンベグループから降圧順
に出口用開閉弁に開弁出力を与える開閉弁制御手段とが
設けられて、この開閉弁制御手段が、圧力容器圧力検出
手段及びボンベ圧力検出手段からのガス圧力信号を対比
しかつその差圧を求めて、適切なタイミングの下でガス
分枝ラインの出口用開閉弁の順次切換開閉を自動的に行
う。その結果、自動運転が可能となり、特別な熟練者を
要せずＨＩＰ運転を合理的に行わせることができる。According to the present invention, a plurality of gas cylinders are divided into groups for each equal pressure level, and an end portion of the gas connection line on the side opposite to the gas connection port via the electrically driven outlet on-off valve for each group. A gas cylinder group having a plurality of gas branch lines having different pressure levels from each other, and a gas cylinder press having a lower pressure during the gas pressurizing operation, giving an opening output to the outlet on-off valve in order of increasing pressure, In the differential pressure recovery operation, on / off valve control means for providing an opening output to the outlet on / off valve in descending pressure order from the cylinder group having a higher pressure is provided, and the on / off valve control means comprises a pressure vessel pressure detecting means and a cylinder pressure. The gas pressure signal from the detection means is compared and the pressure difference is obtained, and the switching valve for the outlet of the gas branch line is automatically switched and opened automatically at an appropriate timing. As a result, automatic operation becomes possible, and HIP operation can be performed rationally without requiring a special expert.
【００１０】さらに本発明によれば、高い圧力レベルの
ガスが充填されて、ガス取合いラインの反ガス取合い口
側端部に電気駆動形の補充用開閉弁を介して接続される
補充用ガスボンベと、ガス置換運転時においてこの運転
によって生じる回収不能分に相当するガス消費量を演算
する演算手段と、ガス加圧運転時には更に、前記演算手
段からのガス消費量信号が導入され、補充用ガスボンベ
の補充用開閉弁に前記ガス消費量に見合って開弁させる
ための開弁出力を与える開閉弁制御手段とが設けられ
る。従って、ＨＩＰ運転サイクルの中で補充用ガスボン
ベからガス回収できないガス量を補充できて加圧に使用
するガスボンベの圧力を高く維持することができ、加圧
に要する時間の短縮が可能である。Further, according to the present invention, there is provided a refill gas cylinder which is filled with a gas at a high pressure level and which is connected to the end of the gas connection line on the side opposite to the gas inlet via an electrically driven refill valve. A calculating means for calculating a gas consumption amount corresponding to an unrecoverable portion generated by this operation during the gas replacement operation; and a gas consumption signal from the calculating means during the gas pressurizing operation is further introduced. On-off valve control means for providing a reopening on-off valve with an opening output for opening the valve in accordance with the gas consumption is provided. Therefore, in the HIP operation cycle, the amount of gas that cannot be recovered from the replenishing gas cylinder can be replenished, the pressure of the gas cylinder used for pressurization can be kept high, and the time required for pressurization can be reduced.
【００１１】[0011]
【実施例】以下、本発明の実施例について添付図面を参
照しながら説明する。図１には、本発明の実施例に係る
ガス集合装置の配管系統図が示される。このガス集合装
置は、図示しないＨＩＰのガス取合い口にガス取合いラ
イン３により接続され、圧力媒体用の不活性ガスの置
換、加圧及び差圧回収が行われる。上記ガス集合装置
は、ガスボンベ群１と、カードルが用いられる補充用ガ
スボンベ２と、圧力容器圧力検出手段４と、ボンベ圧力
検出手段５と、演算手段６と、開閉弁制御手段７とを備
える。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a piping diagram of a gas collecting apparatus according to an embodiment of the present invention. The gas collecting device is connected to a gas inlet of a HIP (not shown) by a gas connecting line 3, and performs replacement of an inert gas for a pressure medium, pressurization, and differential pressure recovery. The gas collecting apparatus includes a gas cylinder group 1, a refill gas cylinder 2 using a curdle, a pressure vessel pressure detecting means 4, a cylinder pressure detecting means 5, a calculating means 6, and an on-off valve control means 7.
【００１２】ガスボンベ群１は、複数基例えば１６基の
ガスボンベ１０A 〜１０P を等圧力レベル毎の四つのグ
ループＧ1,Ｇ2,Ｇ3,Ｇ4 に分けて、各グループＧ1,Ｇ2,
Ｇ3,Ｇ4 単位が電気駆動形、例えば電磁方式の出口用開
閉弁８A,８B,８C,８D をそれぞれ介してガス取合いライ
ン３の反ガス取合い口側端部に接続されていて、圧力レ
ベルでは相互に異なり、かつ、Ｇ1 ＜Ｇ2 ＜Ｇ3 ＜Ｇ4
の関係を有する４系統のガス分枝ラインを形成してい
る。なお、各ガスボンベグループＧ1,Ｇ2,Ｇ3,Ｇ4 に
は、詳細な説明を省略するが圧力計、安全弁、パージ弁
等を設けている。The gas cylinder group 1 divides a plurality of, for example, 16 gas cylinders 10A to 10P into four groups G1, G2, G3, G4 for each equal pressure level.
The G3 and G4 units are connected to the opposite end of the gas connection line 3 on the side opposite to the gas connection via electric drive type, for example, electromagnetic on-off valves 8A, 8B, 8C and 8D. And G1 <G2 <G3 <G4
And four gas branch lines having the following relationship are formed. Each gas cylinder group G1, G2, G3, G4 is provided with a pressure gauge, a safety valve, a purge valve and the like, although detailed description is omitted.
【００１３】補充用ガスボンベ２は、１基以上のガスボ
ンベを備えていて、ガスボンベ群１に併設され、最低圧
力レベルのグループＧ1 よりも高い圧力レベルのガスが
充填されて、前記ガス取合いライン３の反ガス取合い口
側端部に補充用開閉弁９を介して接続される。この補充
用開閉弁９は、出口用開閉弁８A,８B,８C,８D と同じ
く、電気駆動形、例えば電磁方式の制御弁が使用され
る。なお、補充用ガスボンベ２は各ガスボンベグループ
Ｇ1,Ｇ2,Ｇ3,Ｇ4 に対して５番目のガスボンベグループ
と考えて、これにも圧力計、安全弁、パージ弁等を設け
ている。The replenishing gas cylinder 2 is provided with one or more gas cylinders, is provided adjacent to the gas cylinder group 1, and is filled with a gas having a pressure level higher than that of the group G1 having the lowest pressure level. It is connected to the end on the side opposite to the gas inlet via an on-off valve 9 for replenishment. The replenishing on-off valve 9 is, similarly to the outlet on-off valves 8A, 8B, 8C, 8D, an electrically driven type, for example, an electromagnetic control valve. The refilling gas cylinder 2 is considered to be the fifth gas cylinder group for each of the gas cylinder groups G1, G2, G3, G4, and is also provided with a pressure gauge, a safety valve, a purge valve and the like.
【００１４】圧力容器圧力検出手段４は、圧力計におけ
る圧力センサから成る感圧部を、ガス取合いライン３の
ガス取合い口側端部から岐出される分岐配管に装着させ
ていて、ガス取合い口側端部の圧力、即ち、ＨＩＰの図
示しない圧力容器の圧力を検出するように設けられる。
また、ボンベ圧力検出手段５は、圧力容器圧力検出手段
４と同じ構造であって、圧力計における圧力センサから
成る感圧部を、ガス取合いライン３の反ガス取合い口側
端部から岐出される分岐配管に装着させていて、反ガス
取合い口側端部の圧力、即ち、ガス集合装置出口部の圧
力を検出するように設けられる。The pressure vessel pressure detecting means 4 is provided with a pressure-sensitive part comprising a pressure sensor of a pressure gauge mounted on a branch pipe which is branched from an end of the gas connection line 3 on the gas connection side. It is provided to detect the pressure at the end, that is, the pressure of a pressure vessel (not shown) of the HIP.
The cylinder pressure detecting means 5 has the same structure as that of the pressure vessel pressure detecting means 4, and a pressure-sensitive portion comprising a pressure sensor of a pressure gauge is branched off from an end of the gas connecting line 3 opposite to the gas connecting port. It is mounted on a branch pipe and is provided to detect the pressure at the end on the side opposite to the gas inlet, that is, the pressure at the outlet of the gas collecting device.
【００１５】演算手段６及び開閉弁制御手段７は、出口
用開閉弁８A,８B,８C,８D と、補充用開閉弁９と、図示
しないが、ガス集合装置に付設される圧縮機とに関連さ
せて設けられた制御装置の主要部を成す制御回路であっ
て、演算手段６はその作動態様が後述されるが、圧力容
器圧力検出手段４及びボンベ圧力検出手段５からのガス
圧力信号がインプットされて、ガス置換運転時において
この運転によって生じる回収不能分に相当するガス消費
量を演算する演算回路に形成される。一方、開閉弁制御
手段７は圧力容器圧力検出手段４及びボンベ圧力検出手
段５からのガス圧力信号と演算回路からのガス消費量信
号がインプットされて、出口用開閉弁８A,８B,８C,８D
と補充用開閉弁９とに開閉のための順序的な出力を与え
る電気出力回路に形成される。The calculating means 6 and the on-off valve control means 7 are associated with the outlet on-off valves 8A, 8B, 8C, 8D, the replenishing on-off valve 9, and a compressor (not shown) attached to the gas collecting device. The control means is a control circuit which constitutes a main part of the control device provided in this way. The operation means of the control means will be described later, but gas pressure signals from the pressure vessel pressure detection means 4 and the cylinder pressure detection means 5 are inputted. Then, it is formed in an arithmetic circuit for calculating the gas consumption corresponding to the unrecoverable portion generated by this operation during the gas replacement operation. On the other hand, the opening / closing valve control means 7 receives the gas pressure signal from the pressure vessel pressure detecting means 4 and the gas pressure signal from the cylinder pressure detecting means 5 and the gas consumption signal from the arithmetic circuit, and outputs the opening / closing valves 8A, 8B, 8C, 8D.
And a replenishing on-off valve 9 are formed in an electric output circuit for giving sequential outputs for opening and closing.
【００１６】このような実施例であるガス集合装置の自
動切換え運転について以下に説明する。自動切換えに際
しては、基本的にはガス送気（ボンベ圧力による送気）
時は、低圧ボンベグループＧ1 から順に使用し、一方、
差圧回収時は、高圧ボンベグループＧ4 から順に使用す
る。また、各ガスボンベグループＧ1,Ｇ2,Ｇ3,Ｇ4 及び
補充用ガスボンベ２を切換えるタイミングは、ボンベ圧
力検出手段５で検出したガス集合装置出口部の圧力ＰＧ
2 と、圧力容器圧力検出手段４で検出した圧力容器の圧
力ＰＧ1 のバランス圧で切換えるようにする。The automatic switching operation of the gas collecting apparatus according to the embodiment will be described below. For automatic switching, basically gas supply (gas supply by cylinder pressure)
At the time, use the low pressure cylinder group G1 in order,
When recovering the differential pressure, use the high pressure cylinder group G4 in order. The timing of switching between the gas cylinder groups G1, G2, G3, G4 and the replenishing gas cylinder 2 is determined by the pressure PG at the outlet of the gas collecting device detected by the cylinder pressure detecting means 5.
2 and the balance pressure of the pressure vessel pressure PG1 detected by the pressure vessel pressure detecting means 4.
【００１７】ＨＩＰの処理圧力を１５０kgf/cm2(安全ス
イッチの圧力１４５kgf/cm2)、停止時のガス置換（充
填）に必要な圧力をＰr （＝１０kgf/cm2 ）、置換回数
をＮ（通常２回）として、 (1), ガス置換運転：出口用開閉弁８A を開かせてガス
ボンベグループＧ1 によりガス置換を行う。ここで、ガ
ス置換に使用するガスボンベのガス置換前の圧力：Ｐ0,
同じくガス置換後の圧力：Ｐ1 として、ガス置換に要し
たガス量（Ｇ1 ）は、下記式によって求められる。 Ｇ1 ＝（Ｐ0 −Ｐ1 ）×Ａ ………(A) 但し、Ａ：ガスボンベにより決まる定数 なお、ＨＩＰにおける圧力容器の等価体積（Veff）は、
下記式によって求められる。 Ｇ1 ＝Ｐr ×Veff×Ｎ ………(B) 上記(A) 式と(B) 式より、ＨＩＰ圧力容器のガスの占め
る体積（Veff）を計算することが可能である。[0017] The process pressure in the HIP 150 kgf / cm 2 (pressure 145kgf / cm 2 of the safety switch), the pressure required for gas replacement at stop (fill) Pr (= 10kgf / cm 2 ), the substitution number N ( Usually, twice) (1) Gas replacement operation: The outlet on-off valve 8A is opened and gas replacement is performed by the gas cylinder group G1. Here, the pressure before gas replacement of the gas cylinder used for gas replacement: P0,
Similarly, assuming the pressure after gas replacement: P1, the gas amount (G1) required for gas replacement can be obtained by the following equation. G1 = (P0-P1) × A (A) where A is a constant determined by a gas cylinder. The equivalent volume (Veff) of the pressure vessel in the HIP is
It is obtained by the following equation. G1 = Pr × Veff × N (B) From the above equations (A) and (B), it is possible to calculate the volume (Veff) occupied by the gas in the HIP pressure vessel.
【００１８】(2), 加圧運転（ガス送気：ボンベ圧力に
よる加圧）：ガス置換に続いて出口用開閉弁８A,８B,８
C,８D を順次切換えてガスボンベグループＧ1 からガス
ボンベグループＧ4 の順に行わせ、その際、ガスボンベ
グループ毎にＰＧ1 ≒ＰＧ2 をチェックしながら自動切
換えが成される。(2) Pressurizing operation (gas feeding: pressurization by cylinder pressure): outlet on-off valves 8A, 8B, 8 following gas replacement
C and 8D are sequentially switched to perform the operations in order from the gas cylinder group G1 to the gas cylinder group G4. At this time, automatic switching is performed while checking PG11PG2 for each gas cylinder group.
【００１９】(3), 加圧運転（圧縮機による加圧）：圧
縮機を用いた加圧運転の最初において、補充用開閉弁９
の自動開閉を行わせて、補充用ガスボンベ２を用いて残
圧放出時の際のガス放出分のガスの送り込みを行う。な
お、この時点でガス補充を行うのは、補充のための運転
効率が良いからであって、但し、ガス補充はこの例に限
らなく、ボンベ圧力による加圧運転の際に行っても勿論
差し支えない。補充用開閉弁９の開弁制御は下記式(C)
を満足する圧力Ｐ4 となる時点まで行って、その後は、
出口用開閉弁８C,８D を開かせてガスボンベグループＧ
3,Ｇ4 を用いて加圧運転する。 （Ｐ4 −Ｐ3 ）×Ａ＝Ｇ1 ＋Ｇ2 ………(C) 但し、Ｐ3 ：補充用ガスボンベ２使用前の圧力 Ｐ4 ：補充用ガスボンベ２の停止圧力 Ｇ2 ：後記式(D) 参照、前回値が無い場合はＧ2 ＝０ 注）ＨＩＰ炉に入れる処理品体積が一定の場合は、Ｐ4
−Ｐ3を固定値としてもよい。 (4), 昇温・保持及び(5),降温の各運転については説明
を省略する。(3) Pressurizing operation (pressurization by compressor): At the beginning of the pressurizing operation using the compressor, the replenishing on-off valve 9
Is automatically opened and closed, and the gas for the gas release at the time of the release of the residual pressure is sent in using the gas cylinder 2 for replenishment. The gas replenishment at this time is performed because the operation efficiency for the replenishment is high. However, the gas replenishment is not limited to this example, and the gas replenishment may be performed during the pressurization operation by the cylinder pressure. Absent. The opening control of the refilling on-off valve 9 is expressed by the following equation (C).
Until the pressure P4 is satisfied, and then
Open the on-off valves 8C and 8D for the outlet and open the gas cylinder group G
3, Pressurize operation using G4. (P4-P3) x A = G1 + G2 ... (C) where P3: pressure before using refill gas cylinder 2 P4: stop pressure of refill gas cylinder 2 G2: see formula (D) below, no previous value G2 = 0 Note) If the volume of the processed product to be put into the HIP furnace is constant, P4
-P3 may be a fixed value. Descriptions of (4), temperature raising / holding, and (5), temperature lowering operations are omitted.
【００２０】(6), 差圧回収運転（圧力容器とボンベと
の圧力差によるガス回収） 出口用開閉弁８D,８C,８B,８A を順次切換えて圧力の高
いガスボンベグループＧ4 からガスボンベグループＧ1
の順に行わせ、その際、ガスボンベグループ毎にＰＧ1
≒ＰＧ2 をチェックしながら自動切換えが成される。な
お、出口用開閉弁８D,８C,８B,８A の自動切換えの具体
的な制御態様については、図２のフローチャートに基づ
いて以下説明する。(6) Differential pressure recovery operation (gas recovery by pressure difference between pressure vessel and cylinder) Outlet on-off valves 8D, 8C, 8B, 8A are sequentially switched to change from high-pressure gas cylinder group G4 to gas cylinder group G1.
In that order, with PG1 for each gas cylinder group.
自動 Automatic switching is performed while checking PG2. The specific control mode of the automatic switching of the outlet on-off valves 8D, 8C, 8B, 8A will be described below with reference to the flowchart of FIG.
【００２１】ステップＳ1 で差圧回収開始指令が出され
ると次のステップＳ2 に移って開閉弁制御手段７により
出口用開閉弁８D を開弁させ、同時にステップＳ3 にお
いて演算手段６により圧力の検出及び差算（ΔＰ＝ＰＧ
1 −ＰＧ2 ）を行う。この差算結果がステップＳ4 にお
いて行われ、ΔＰの絶対値が定数αより小さくなると、
次のステップＳ5 に移って演算手段６に内蔵の圧力安定
待ち用タイマが計時作動する。このタイマは、計測時限
が例えば１０sec に設定される。１０sec 経過し、次の
ステップＳ6 で再び演算手段６により圧力の検出及び差
算（ΔＰ＝ＰＧ1 −ＰＧ2 ）を行う。この差算結果がス
テップＳ7 において行われ、ΔＰの絶対値が定数αより
小さいことがチェックされると、圧力の差が過渡的な変
動値でなく安定した値であることから、ステップＳ8 に
移って出口用開閉弁８D を閉じさせ、かつ、出口用開閉
弁８C を代わって開弁させ、ガスボンベグループＧ4 に
代わってガスボンベグループＧ3 での差圧回収運転を行
わせる。以下、上記と同様にステップＳ2 乃至ステップ
Ｓ8 の作動をガスボンベグループＧ1 の出口用開閉弁８
A まで順に行わせて、差圧回収の自動切換え運転が成さ
れる。When a differential pressure recovery start command is issued in step S1, the process proceeds to the next step S2, where the opening / closing valve 8D is opened by the opening / closing valve control means 7, and at the same time, in step S3, the pressure is detected and calculated by the calculating means 6. Difference (ΔP = PG
1 -PG2). The result of the subtraction is performed in step S4, and when the absolute value of ΔP becomes smaller than the constant α,
In the next step S5, the pressure stabilization wait timer built in the calculating means 6 is operated. This timer has a measurement time limit set to, for example, 10 seconds. After a lapse of 10 seconds, in the next step S6, the pressure detection and the difference calculation (.DELTA.P = PG1-PG2) are performed by the calculating means 6 again. The result of this subtraction is performed in step S7, and if it is checked that the absolute value of ΔP is smaller than the constant α, the process proceeds to step S8 because the pressure difference is not a transient fluctuation value but a stable value. To close the outlet on-off valve 8D and open the outlet on-off valve 8C in place of the outlet, thereby performing the differential pressure recovery operation in the gas cylinder group G3 in place of the gas cylinder group G4. Hereinafter, in the same manner as described above, the operations of steps S2 to S8 are performed by setting the outlet opening / closing valve 8 of the gas cylinder group G1.
Automatic switching operation of differential pressure recovery is performed by sequentially performing the operations up to A.
【００２２】(7), 強制回収運転（圧縮機を用いたガス
回収） 出口用開閉弁８D,８C,８B,８A を順次切換えて圧力の高
いガスボンベグループＧ4 からガスボンベグループＧ1
の順に圧縮機による強制 suctionで回収を行わせ、その
際、ＰＧ2 ＝１４５kgf/cm2 を安全限界としてチェック
を行う。(7) Forcible recovery operation (gas recovery using a compressor) The outlet on-off valves 8D, 8C, 8B, 8A are sequentially switched to change the gas cylinder group G4 having a high pressure to the gas cylinder group G1.
Order to perform the recovery in a forced suction by the compressor, its time, a check for PG2 = 145kgf / cm 2 as a safety limit.
【００２３】以上述べる要領に基づいてガスボンベの自
動切換えが行われるが、前述するガス放出の際のガス放
出量の算出は下記式 (D)によって行えばよい。 Ｇ2 ＝Ｐ5 ×Veff ………(D) 但し、Ｐ5 ：ガス放出開始時の圧力 なお、この値Ｇ2 は、次回の運転時のガス補充量計算に
使用される。The gas cylinders are automatically switched based on the procedure described above. The amount of gas released at the time of gas release described above may be calculated by the following equation (D). G2 = P5 × Veff (D) where P5 is the pressure at the start of gas release. This value G2 is used for calculating the gas replenishment amount at the next operation.
【００２４】[0024]
【発明の効果】以上述べるように本発明によれば、ガス
置換、加圧、差圧回収の各運転が各開閉弁の自動切換制
御によって順序的かつ自動的に行われることによって、
特別な熟練者を必要としなく、容易にしかも適切なタイ
ミングでガス集合装置の運転が行える。さらに本発明に
よれば、ガス置換時に使用するガスボンベ群の圧力降下
中とガス放出時の圧力容器降下中とに基づいてガス消費
量を計算し、このガス消費量を加圧工程時に補充用ガス
ボンベから供給するようにしているので、ガスボンベ群
のうち加圧に使用するボンベ群の圧力を低下しないよう
に高いレベルで維持することが可能であり、従って、加
圧時間をできるだけ短くさせることができて、熱間静水
圧加圧装置の運転経済性を向上し得る優れた効果を奏す
る。As described above, according to the present invention, each operation of gas replacement, pressurization, and differential pressure recovery is performed sequentially and automatically by automatic switching control of each on-off valve.
The operation of the gas collecting device can be performed easily and at an appropriate timing without requiring a special expert. Further, according to the present invention, the gas consumption is calculated based on the pressure drop of the gas cylinder group used at the time of gas replacement and during the pressure vessel drop at the time of gas release, and this gas consumption is calculated during the pressurizing step. , It is possible to maintain the pressure of the cylinder group used for pressurization of the gas cylinder group at a high level so as not to decrease, and therefore, it is possible to shorten the pressurization time as much as possible. Thus, an excellent effect can be obtained that can improve the operation economics of the hot isostatic pressing device.
【図１】本発明の実施例に係るガス集合装置の配管系統
図である。FIG. 1 is a piping diagram of a gas collecting apparatus according to an embodiment of the present invention.
【図２】図１図示のガス集合装置における演算手段及び
開閉弁制御手段の作動態様を示すフローチャートであ
る。FIG. 2 is a flowchart showing an operation mode of a calculation unit and an on-off valve control unit in the gas collecting device shown in FIG.
１…ガスボンベ群 ２…補充用ガスボンベ ３…ガス取合いライン ４…圧力容器圧力検出手段 ５…ボンベ圧力検出手段 ６…演算手段 ７…開閉弁制御手段 ８A 〜８D …出口用開閉弁 ９…補充用開閉弁 １０A 〜１０P …ガスボンベ DESCRIPTION OF SYMBOLS 1 ... Gas cylinder group 2 ... Refill gas cylinder 3 ... Gas connection line 4 ... Pressure vessel pressure detecting means 5 ... Cylinder pressure detecting means 6 ... Calculation means 7 ... Opening / closing valve control means 8A-8D ... Outlet opening / closing valve 9 ... Refilling opening / closing Valve 10A to 10P ... gas cylinder
Claims (4)
ス取合いラインによって接続され、圧力媒体用ガスの置
換と、ボンベ圧力及び圧縮機圧力による加圧と、差圧回
収とを行わせるガス集合装置であって、複数基のガスボ
ンベを等圧力レベル毎のグループに分け、かつ、グルー
プ単位に電気駆動形の出口用開閉弁をそれぞれ介しガス
取合いラインの反ガス取合い口側端部に接続して、圧力
レベルが相互に異なる複数系統のガス分枝ラインが設け
られるガスボンベ群と、前記ガス取合い口のガス圧力を
検出する圧力容器圧力検出手段と、ガス取合いラインの
反ガス取合い口側端部のガス圧力を検出するボンベ圧力
検出手段と、圧力容器圧力検出手段及びボンベ圧力検出
手段からのガス圧力信号が導入され、両圧力信号の差の
バランスに応じて、ガス加圧運転時には圧力が低い方の
ボンベグループから昇圧順に出口用開閉弁に開弁出力を
与え、差圧回収運転時には圧力が高い方のボンベグルー
プから降圧順に出口用開閉弁に開弁出力を与える開閉弁
制御手段とを含むことを特徴とする熱間静水圧加圧装置
のガス集合装置。1. A gas connecting line connected to a gas inlet of a hot isostatic pressurizing device to replace a gas for a pressure medium, pressurize with a cylinder pressure and a compressor pressure, and recover a differential pressure. In a gas collecting device, a plurality of gas cylinders are divided into groups for each equal pressure level, and each group is connected to the end of the gas connection line on the opposite side of the gas connection port via an electrically driven outlet on-off valve. A gas cylinder group provided with a plurality of gas branch lines having different pressure levels from each other, a pressure vessel pressure detecting means for detecting a gas pressure of the gas inlet, and an end of the gas inlet line opposite to the gas inlet. Cylinder pressure detecting means for detecting the gas pressure of the part, gas pressure signals from the pressure vessel pressure detecting means and the cylinder pressure detecting means are introduced, and according to the balance of the difference between the two pressure signals, During gas pressurization operation, the valve opening output is given to the outlet on-off valve in descending order of pressure from the cylinder group with the lower pressure, and during differential pressure recovery operation, the valve-opening output is output to the outlet on-off valve in descending order from the cylinder group with higher pressure in descending pressure. And an on-off valve control means for supplying the gas to the hot isostatic pressurizing apparatus.
ス取合いラインによって接続され、圧力媒体用ガスの置
換と、ボンベ圧力及び圧縮機圧力による加圧と、差圧回
収とを行わせるガス集合装置であって、複数基のガスボ
ンベを等圧力レベル毎のグループに分け、かつ、グルー
プ単位に電気駆動形の出口用開閉弁をそれぞれ介しガス
取合いラインの反ガス取合い口側端部に接続して、圧力
レベルが相互に異なる複数系統のガス分枝ラインが設け
られるガスボンベ群と、このガスボンベ群の最低圧力レ
ベルよりも高い圧力レベルのガスが充填されて、ガス取
合いラインの反ガス取合い口側端部に電気駆動形の補充
用開閉弁を介して接続される補充用ガスボンベと、前記
ガス取合い口のガス圧力を検出する圧力容器圧力検出手
段と、ガス取合いラインの反ガス取合い口側端部のガス
圧力を検出するボンベ圧力検出手段と、圧力容器圧力検
出手段及びボンベ圧力検出手段からのガス圧力信号が導
入され、ガス置換運転時においてこの運転によって生じ
る回収不能分に相当するガス消費量を演算する演算手段
と、圧力容器圧力検出手段及びボンベ圧力検出手段から
のガス圧力信号が導入され、両圧力信号の差のバランス
に応じて、ガス加圧運転時には圧力が低い方のボンベグ
ループから昇圧順に出口用開閉弁に開弁出力を与え、差
圧回収運転時には圧力が高い方のボンベグループから降
圧順に出口用開閉弁に開弁出力を与え、ガス加圧運転時
には更に、前記演算手段からのガス消費量信号が導入さ
れ、補充用ガスボンベの補充用開閉弁に前記ガス消費量
に見合って開弁させるための開弁出力を与える開閉弁制
御手段とを含むことを特徴とする熱間静水圧加圧装置の
ガス集合装置。2. A hot water isostatic pressurizing device is connected to a gas inlet of the hot isostatic pressurization device by a gas connection line, and performs replacement of a pressure medium gas, pressurization by a cylinder pressure and a compressor pressure, and differential pressure recovery. In a gas collecting device, a plurality of gas cylinders are divided into groups for each equal pressure level, and each group is connected to the end of the gas connection line on the opposite side of the gas connection port via an electrically driven outlet on-off valve. A gas cylinder group provided with a plurality of gas branch lines having different pressure levels from each other; and a gas filled at a pressure level higher than the lowest pressure level of the gas cylinder group, and an anti-gas inlet of a gas connection line. A replenishing gas cylinder connected to the side end via an electrically driven refilling on-off valve, pressure vessel pressure detecting means for detecting the gas pressure at the gas inlet, and a gas inlet Gas pressure signals from the cylinder pressure detecting means for detecting the gas pressure at the end of the gas inlet on the side opposite to the gas inlet, and the gas pressure signals from the pressure vessel pressure detecting means and the cylinder pressure detecting means, are collected during the gas replacement operation. Calculation means for calculating the gas consumption amount corresponding to the impossible portion, and gas pressure signals from the pressure vessel pressure detection means and the cylinder pressure detection means are introduced, and according to the balance of the difference between the two pressure signals, during gas pressurization operation. Valve opening output is given to the outlet on-off valve in descending order of pressure from the cylinder group, and valve opening output is given to the outlet on-off valve in descending order of pressure from the cylinder group with higher pressure during differential pressure recovery operation. During operation, a gas consumption signal from the calculating means is further introduced, and a valve opening output for opening the refilling on / off valve of the refilling gas cylinder in accordance with the gas consumption. Gas gathering device for a hot isostatic pressing apparatus which comprises a closing valve control means for providing.
圧力レベルよりも低いボンベグループによりボンベ圧力
で行うガス加圧運転時において、補充用開閉弁に開弁出
力を与えるように形成される請求項２記載の熱間静水圧
加圧装置のガス集合装置。3. The on-off valve control means is configured to provide a valve opening output to the replenishing on-off valve during a gas pressurization operation performed at a cylinder pressure by a cylinder group lower than the pressure level of the refilling gas cylinder. Item 3. A gas collecting device of the hot isostatic pressing device according to Item 2.
ス加圧運転時において、補充用開閉弁に開弁出力を与え
るように形成される請求項２記載の熱間静水圧加圧装置
のガス集合装置。4. The hot isostatic pressurizing apparatus according to claim 2, wherein the on-off valve control means is configured to give a valve opening output to the replenishing on-off valve during a gas pressurizing operation performed at a compressor pressure. Gas collecting equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11858095A JP2935648B2 (en) | 1995-05-17 | 1995-05-17 | Gas collecting device for hot isostatic pressurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11858095A JP2935648B2 (en) | 1995-05-17 | 1995-05-17 | Gas collecting device for hot isostatic pressurizing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08313167A JPH08313167A (en) | 1996-11-29 |
| JP2935648B2 true JP2935648B2 (en) | 1999-08-16 |
Family
ID=14740115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11858095A Expired - Lifetime JP2935648B2 (en) | 1995-05-17 | 1995-05-17 | Gas collecting device for hot isostatic pressurizing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2935648B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457243B (en) * | 2014-11-05 | 2017-01-11 | 深圳市沃尔核材股份有限公司 | Method for reducing heat loss and energy-saving heating furnace using same |
-
1995
- 1995-05-17 JP JP11858095A patent/JP2935648B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08313167A (en) | 1996-11-29 |
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