JPS60169060A - Method of controlling operation of cryogenic refrigerator - Google Patents
Method of controlling operation of cryogenic refrigeratorInfo
- Publication number
- JPS60169060A JPS60169060A JP2280684A JP2280684A JPS60169060A JP S60169060 A JPS60169060 A JP S60169060A JP 2280684 A JP2280684 A JP 2280684A JP 2280684 A JP2280684 A JP 2280684A JP S60169060 A JPS60169060 A JP S60169060A
- Authority
- JP
- Japan
- Prior art keywords
- expander
- compressor
- gas
- valve
- flow rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
木発明は、極低温冷凍装置の運転制御方法に係り、特に
膨ｇ！機並びにジュール・トムソン弁（以下、ＪＴ弁と
略）を有する極低温冷凍装置の運転制御方法に関するも
のである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for controlling the operation of a cryogenic refrigeration system, and in particular to an operation control method for a cryogenic refrigeration system. The present invention relates to a method for controlling the operation of a cryogenic refrigeration system having a Joule-Thomson valve (hereinafter abbreviated as JT valve).
ヘリウム液化冷凍機、水素液化機等の膨張機ＭＰびにＪ
Ｔ弁を有する極低温冷凍装置において膨張機のガス流量
は膨張機の入口圧力を一定に保つように定値制御する方
法等により制御されている。Expander MP and J for helium liquefaction refrigerators, hydrogen liquefaction machines, etc.
In a cryogenic refrigeration system having a T-valve, the gas flow rate of the expander is controlled by a constant value control method or the like to keep the inlet pressure of the expander constant.
膨張機のガス流量すなわち膨張機の入口圧力には運転状
況に応じた最適値が存在するが、しかし、この最適ゼ１
に制御することが困難であるため、膨張機にガスを流し
過ぎて圧縮機能力をオーバーしてしまったり、逆に不足
して圧縮機吐出ガスのバイパスによる無駄な電力消費が
生ずるといった欠点があった。There is an optimal value for the gas flow rate of the expander, that is, the inlet pressure of the expander, depending on the operating situation, but this optimal value
Since it is difficult to control the amount of gas, there are drawbacks such as overflowing gas to the expander, which exceeds the compression function, or conversely, not enough gas, resulting in wasteful power consumption due to bypass of the compressor discharge gas. Ta.
本発明の目的は、膨張機のガス流量を運転状況に応じて
適正に制御することで、圧縮機での匍カ珂−バーと無駄
な電力消費とを防止できる極低温冷凍装置の運転制御方
法を提供することにある。An object of the present invention is to provide a method for controlling the operation of a cryogenic refrigeration system, which can prevent the compressor from running over and wasteful power consumption by appropriately controlling the gas flow rate of the expander according to the operating conditions. Our goal is to provide the following.
木発明は、膨張機の入口圧力を圧縮機のバイパス流量頚
を用いて制御することを特徴とするもので、圧縮機のバ
イパス流量が最小となるように膨張機の入口圧力を制御
して膨張機のガス流量を運転状況に応じて適正に制御し
ようとするものである。The invention is characterized in that the inlet pressure of the expander is controlled using the bypass flow rate neck of the compressor, and the inlet pressure of the expander is controlled so that the bypass flow rate of the compressor is minimized. The aim is to appropriately control the gas flow rate of the machine according to the operating conditions.
ヘリウム液化冷凍機、水素液化機等の膨張ＷＦ並びにＪ
Ｔ弁を有する極低温冷凍装ぽで、圧縮機の吐出ガスは冷
凍機に導入され、冷凍機内部の膨張Ｍｌ並びにＪＴ弁で
膨張して寒冷を発生した後、圧縮機の吸入側に戻される
が、圧縮機吐出■が冷凍機内の流量よりも多い場合は、
この過剰分はバイパスラインを通り冷凍機をバイパスす
る。一方、冷凍機内の流量はＪＴ弁並びに膨張機の入口
弁によって決定されるが、ＪＴ弁は液化、冷凍等の各運
転モードによって弁開度が決定されるのに対して、膨張
機の入口弁は開けば開くほど膨張機での寒冷発生量が増
加して装置能力が向上する。但し、膨張機の入口弁の弁
開度をあまり大きくし過ぎると圧縮機での電力をオーバ
ーしてしまう。Expansion WF and J for helium liquefaction refrigerators, hydrogen liquefaction machines, etc.
In a cryogenic refrigeration system with a T valve, the discharge gas from the compressor is introduced into the refrigerator, and after being expanded by the expansion Ml and JT valves inside the refrigerator to generate cold, it is returned to the suction side of the compressor. However, if the compressor discharge ■ is higher than the flow rate inside the refrigerator,
This excess amount passes through the bypass line and bypasses the refrigerator. On the other hand, the flow rate inside the refrigerator is determined by the JT valve and the inlet valve of the expander, but the opening degree of the JT valve is determined by each operation mode such as liquefaction and refrigeration, whereas the inlet valve of the expander The more you open the expander, the more cold generation will occur in the expander, improving the capacity of the device. However, if the opening degree of the inlet valve of the expander is made too large, the electric power in the compressor will be exceeded.
木発明者は、このような点につき種々検討を行った結果
、バイパス流量を検知して、このバイパス流量が最小と
なる。ように膨張機の入口弁の弁開度を制御すれば、膨
張機の入口圧力の最適制御を行うことができ膨張機のガ
ス流量を運転状況に応じて適正に制御できるという知見
を得た。As a result of various studies on these points, the inventor of the present invention detected the bypass flow rate, and this bypass flow rate becomes the minimum. We have found that by controlling the opening degree of the inlet valve of the expander in this manner, the inlet pressure of the expander can be optimally controlled and the gas flow rate of the expander can be appropriately controlled depending on the operating conditions.
以下、本発明の一実施例を図面により説明する。An embodiment of the present invention will be described below with reference to the drawings.
図面は、クロードサイクルを用いたヘリウム冷凍様で、
圧縮機１を出たガスはコールドボックス２に入り、第１
熱交換ｎ３で戻りガス及び液体窒素（ＬＮ２）により冷
却された後に膨張機ライン４とＪＴ弁プライン５に分流
する。膨張機ライン４に分流したガスは第１膨張９６及
び第２膨張機７で断熱膨張して自身の温度を降下させた
後に低圧ライン８のガスに合流する。一方、ＪＴ弁テラ
イン５Ｊ二
器】２で低圧ライン８を流れる戻りガスにより冷却され
た後にＪＴＴｉＢ２断熱膨張して一部液化する。The drawing is similar to helium freezing using a Claude cycle.
The gas leaving the compressor 1 enters the cold box 2 and enters the first
After being cooled by the return gas and liquid nitrogen (LN2) in heat exchange n3, it is divided into the expander line 4 and the JT valve line 5. The gas branched into the expander line 4 undergoes adiabatic expansion in the first expander 96 and second expander 7 to lower its own temperature, and then joins the gas in the low pressure line 8 . On the other hand, after being cooled by the return gas flowing through the low pressure line 8 in JT Valve Terrain 5J 2, JTTiB2 expands adiabatically and partially liquefies.
その後、被冷却体１４を冷却し第５熱交換ｌＩ２１２に
戻り低圧ライン８を通りＪＴ弁プライン５漬れるガスを
冷却し自身の湿度を上昇させ常温になった後に圧縮ｉｅ
１の吸入側に導かれる。After that, the object to be cooled 14 is cooled, and the gas returns to the fifth heat exchange lI 212, passes through the low pressure line 8, and is immersed in the JT valve line 5. The gas is cooled, its own humidity is increased, and after reaching room temperature, it is compressed.
1 to the suction side.
この場合、圧縮′ａ１を出たガスは、コールドボックス
２に流れる情景が少ない間はバイパスライン１５のバイ
パス弁１６ 、 １７を通り一部バイパスする。In this case, the gas leaving the compression 'a1 passes through the bypass valves 16 and 17 of the bypass line 15 and is partially bypassed while the flow to the cold box 2 is small.
一方，膨張機人口弁１８は第２膨張桜７の入口圧力を検
出し圧力指示調節計１９によって制御されている。この
圧力指示調節計１９の設定値をバイパスライン１５をバ
イパスするガスのバイパスｍｐを検出する流量指示調節
計２０によってカスケード制御し、流量指示調節計２０
の設定値を最少にしておく。On the other hand, the expander artificial valve 18 detects the inlet pressure of the second expansion cherry 7 and is controlled by a pressure indicating controller 19. The setting value of this pressure indicating controller 19 is cascade-controlled by a flow rate indicating controller 20 that detects the bypass mp of gas bypassing the bypass line 15.
Set the value to the minimum.
本実施例によれば、膨張機のガス流量を運転状況に応じ
て適正できるので、圧縮機での箭カオーバーと無駄な電
力消費とを防止することができる。According to this embodiment, the gas flow rate of the expander can be adjusted appropriately according to the operating conditions, so that overflow in the compressor and wasteful power consumption can be prevented.
又、圧縮機の吐出ガスの全量を寒冷の発生に利用でき装
置１箭力及び効率を向上させることができる。In addition, the entire amount of gas discharged from the compressor can be used to generate refrigeration, thereby improving the power and efficiency of the device 1.
本発明Ｊ．ｔ、以上説明したように膨張機の入口圧力を
圧縮機のバイパス流量を用いて制御することで、膨張機
のガス流量を運転状況に応じて適正に制御できるので、
圧縮機での箭カオーバーと無駄な電力消費を防止できる
という効果がある。The present invention J. t. As explained above, by controlling the inlet pressure of the expander using the bypass flow rate of the compressor, the gas flow rate of the expander can be appropriately controlled according to the operating conditions.
This has the effect of preventing overflow in the compressor and wasteful power consumption.
図面は本発明を実施したヘリウム冷凍機の一例を示すフ
ローシートである。
】・・・・・・圧縮機、７・・・・・・第２膨張機、１
３・・・・・・ＪＴ弁、】８・・・・・・膨張機入口弁
、１９・・・・・・圧力指示調節針、２０・・・・・・
塘景指示調節計。The drawing is a flow sheet showing an example of a helium refrigerator embodying the present invention. ]...Compressor, 7...Second expander, 1
3... JT valve, ]8... Expander inlet valve, 19... Pressure indicator adjustment needle, 20...
Tongjing indicating controller.
Claims (1)
生させる膨張９兼びにジュール・トムソン弁を有する極
低温冷凍装置において、前記膨張機の入口圧力を前記圧
縮機のバイパス流ｆを用いて制御することを特徴とする
極低温冷凍装置の運転制御方法。1. In a cryogenic refrigeration system having an expansion valve and a Joule-Thomson valve that adiabatically expands gas discharged from a compressor to generate cold, the inlet pressure of the expander is controlled using a bypass flow f of the compressor. A method for controlling the operation of a cryogenic refrigeration device, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2280684A JPS60169060A (en) | 1984-02-13 | 1984-02-13 | Method of controlling operation of cryogenic refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2280684A JPS60169060A (en) | 1984-02-13 | 1984-02-13 | Method of controlling operation of cryogenic refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60169060A true JPS60169060A (en) | 1985-09-02 |
| JPH0349025B2 JPH0349025B2 (en) | 1991-07-26 |
Family
ID=12092929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2280684A Granted JPS60169060A (en) | 1984-02-13 | 1984-02-13 | Method of controlling operation of cryogenic refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60169060A (en) |
-
1984
- 1984-02-13 JP JP2280684A patent/JPS60169060A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0349025B2 (en) | 1991-07-26 |
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