JPS6160347B2 - - Google Patents
Info
- Publication number
- JPS6160347B2 JPS6160347B2 JP5075780A JP5075780A JPS6160347B2 JP S6160347 B2 JPS6160347 B2 JP S6160347B2 JP 5075780 A JP5075780 A JP 5075780A JP 5075780 A JP5075780 A JP 5075780A JP S6160347 B2 JPS6160347 B2 JP S6160347B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- cylinder
- piston
- exhaust
- valve cylinder
- 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
Links
- 238000012856 packing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Mechanically-Actuated Valves (AREA)
Description
【発明の詳細な説明】
極低温用膨脹機は熱交換器等と共に構成される
液化機の一部であつて、圧縮したガスを膨脹さ
せ、そのエネルギーを取去る時に温度が低下する
原理を応用し、ガスを極低温に冷却し、液化ガス
の製造あるいは冷凍に利用するものである。[Detailed description of the invention] A cryogenic expander is a part of a liquefaction machine that is constructed with a heat exchanger, etc., and applies the principle that compressed gas is expanded and the temperature decreases when the energy is removed. The gas is then cooled to an extremely low temperature and used for producing liquefied gas or for freezing.
この発明はこのような極低温用膨脹機に付帯す
る自動排気弁に関する。 The present invention relates to an automatic exhaust valve attached to such a cryogenic expander.
極低温用膨脹機における排気弁は吸気弁と共に
ガスの吸排気操作を行なうものであるが、従来公
知の排気弁は、第１図に示すように排気弁１３に
細長いロツド１４を設け、このロツドを弁の作用
温度である極低温部Ａから膨脹機を取付けてある
常温部Ｂのフランジ上に出し、さらにこれを膨脹
機の駆動装置１５に設けてある弁駆動機構１６に
接続して排気弁１３を駆動するようになつている
が、これによると、弁駆動機構１６に例えばカ
ム、レバー、軸等が必要となる。このため、膨脹
機駆動装置１５の機構が複雑化し、さらにはロツ
ド１４が極低温部Ａから常温部Ｂに貫通している
ため、ロツド１４を介して熱侵入が生じ、膨脹機
の効率低下の原因となつていた。 The exhaust valve in a cryogenic expander performs gas intake and exhaust operations together with the intake valve. In conventional exhaust valves, as shown in FIG. 1, an elongated rod 14 is provided on the exhaust valve 13, and is discharged from the cryogenic part A, which is the operating temperature of the valve, onto the flange of the normal temperature part B, where the expander is attached, and then connected to the valve drive mechanism 16 provided in the drive device 15 of the expander to drive the exhaust valve. 13, but according to this, the valve drive mechanism 16 requires, for example, a cam, a lever, a shaft, etc. For this reason, the mechanism of the expander drive device 15 becomes complicated, and furthermore, since the rod 14 penetrates from the cryogenic section A to the room temperature section B, heat enters through the rod 14, which reduces the efficiency of the expander. It was the cause.
この発明は上記した従来の問題点に対処するた
めに提案されたもので、その目的は、ピストンの
往復動作により開閉操作を行なう自動排気弁を提
供することによつて駆動機構の簡略化と効率向上
を図ることにある。 This invention was proposed to address the above-mentioned conventional problems, and its purpose is to simplify the drive mechanism and improve efficiency by providing an automatic exhaust valve that opens and closes by reciprocating movement of a piston. The aim is to improve.
以下図面に示す実施例によつて説明する。 The embodiments shown in the drawings will be explained below.
第２図において、１はピストンで、上端部を連
結棒により膨脹機の駆動機構に連結され、駆動機
構の駆動により底面にバルブシート２を付したシ
リンダ３内を上下動するようになつている。本発
明による排気弁は前記ピストン１の下端部に組込
まれ主に後述するバルブシリンダ４と通気口５と
パツキン６とパツキン押え７とからなる。４はピ
ストン１の下端部に上下動可能に装嵌されたバル
ブシリンダで、その外径はピストン１の上部外径
と同径につくられ、上端部には、ピストン１に形
成した溝１ａ内を摺動する係合部４ａが形成され
ている。このバルブシリンダの下端には吸気ガス
および排気ガスが出入りする通気口５が穿設さ
れ、その周縁にバルブパツキン６がパツキン押え
７によつて取付けられている。８は溝１ａの上部
係合面１ｂとバルブシリンダ４の上端面との間に
挿入されたスプリング、９はシリンダ３の底面と
バルブシリンダの下端面との間に挿入されたスプ
リング、１０はシリンダ３の底部を貫通する吸気
口、１１はシリンダ３の底部に穿設された排気
口、１２はシリンダ３底部とバルブシリンダ４と
の間に形成された膨脹空間である。 In Fig. 2, 1 is a piston whose upper end is connected to the drive mechanism of the expander by a connecting rod, and when driven by the drive mechanism, it moves up and down in a cylinder 3 with a valve seat 2 attached to the bottom surface. . The exhaust valve according to the present invention is assembled into the lower end of the piston 1 and mainly consists of a valve cylinder 4, a vent 5, a packing 6, and a packing retainer 7, which will be described later. A valve cylinder 4 is fitted to the lower end of the piston 1 so as to be able to move up and down.The outer diameter of the valve cylinder 4 is the same as the outer diameter of the upper part of the piston 1. An engaging portion 4a that slides is formed. A vent hole 5 through which intake gas and exhaust gas enter and exit is provided at the lower end of the valve cylinder, and a valve seal 6 is attached to the periphery of the vent hole 5 by a seal retainer 7. 8 is a spring inserted between the upper engaging surface 1b of the groove 1a and the upper end surface of the valve cylinder 4; 9 is a spring inserted between the bottom surface of the cylinder 3 and the lower end surface of the valve cylinder; 10 is the cylinder 3 is an intake port penetrating the bottom of the cylinder 3; 11 is an exhaust port drilled in the bottom of the cylinder 3; 12 is an expansion space formed between the bottom of the cylinder 3 and the valve cylinder 4.
本発明は以上の通り構成であつて、次にその作
用について説明する。 The present invention is constructed as described above, and its operation will be explained next.
まず、ピストン１が下死点S0にあるとき、吸気
弁が開き、高圧の作用ガスがバルブシリンダー４
とピストン１に囲まれた膨脹空間１２に流入す
る。ピストン１はガス圧力と外部に設けられた駆
動装置により上昇行程に入り、ストロークS1に達
したとき吸気弁が閉じる。膨脹空間１２内に流入
された高圧ガスは断熱膨脹しつつピストン１をさ
らに上昇させ、これが上死点S2に達する際、ピス
トン１の溝下端の係合面１ｃがバルブシリンダ４
の係合部４ａ下面に当接し、バルブシリンダ４を
押上げパツキン５とバルブシート２を離し、排気
弁を開放する。このため膨脹した作用ガスは排気
口１１を経て低圧側に流出する。次にピストン１
は下降行程に入るが、この際バルブシリンダ４は
スプリング９のばね作用により上方に押し上げら
れており（８＜９）、排気弁を開の状態を維持し
ているためガスの排出は引続いて行なわれる。ピ
ストン１が下死点S0の手前に達したとき、ピスト
ンの溝１ａの上方係合面１ｂがスプリング８に当
り、そのばね作用によりバルブシリンダ４を押し
下げ、パツキン６がバルブシート２に押圧される
ことにより排気弁が閉じられて１サイクルを完了
する。第４図はこの状態を線図で表したものであ
る。 First, when the piston 1 is at the bottom dead center S0 , the intake valve opens and high-pressure working gas flows into the valve cylinder 4.
and flows into the expansion space 12 surrounded by the piston 1. The piston 1 enters an upward stroke due to gas pressure and an external drive device, and when the stroke S 1 is reached, the intake valve closes. The high-pressure gas that has flowed into the expansion space 12 expands adiabatically and further raises the piston 1, and when it reaches the top dead center S2 , the engagement surface 1c of the lower end of the groove of the piston 1 engages with the valve cylinder 4.
The valve cylinder 4 is pushed up and the gasket 5 and the valve seat 2 are separated from each other, thereby opening the exhaust valve. Therefore, the expanded working gas flows out through the exhaust port 11 to the low pressure side. Next piston 1
enters the downward stroke, but at this time the valve cylinder 4 is pushed upward by the spring action of the spring 9 (8<9), and the exhaust valve remains open, so gas continues to be discharged. It is done. When the piston 1 reaches just before the bottom dead center S0 , the upper engaging surface 1b of the groove 1a of the piston hits the spring 8, and the spring action pushes down the valve cylinder 4, and the seal 6 is pressed against the valve seat 2. This closes the exhaust valve and completes one cycle. FIG. 4 is a diagrammatic representation of this state.
この動作の繰返しにより断熱膨脹された熱交換
器を介して流入する高温ガスを順次冷却し、常温
となつて外部に流出する。 By repeating this operation, the high-temperature gas flowing through the adiabatic expanded heat exchanger is sequentially cooled down to room temperature and flows out to the outside.
この発明は以上詳述したように、排気弁がピス
トン１とシリンダ３内に組み込まれており、しか
も排気弁の開閉操作をピストン１に設けた溝１ａ
とスプリング８および９のばね作用により、ピス
トン１の動きに関連して行なわせるようにしてあ
るため、これまでの排気弁のように格別の駆動機
構を設ける必要もなく、また極低温部から常温部
にバルブロツドを出す必要もなくなり、それだけ
機構を簡略化すると共に、常温部からの熱侵入量
を減少させることが可能となり、その結果膨脹機
の効率向上に極めて有効である。 As described in detail above, this invention has an exhaust valve built into the piston 1 and the cylinder 3, and a groove 1a provided in the piston 1 for opening and closing the exhaust valve.
This is done in conjunction with the movement of the piston 1 by the spring action of the springs 8 and 9, so there is no need to provide a special drive mechanism like in conventional exhaust valves, and it is also possible to move the exhaust valve from a cryogenic area to a room temperature. It is no longer necessary to provide a valve rod to the section, which simplifies the mechanism and reduces the amount of heat entering from the room temperature section, which is extremely effective in improving the efficiency of the expander.
第１図は従来の膨脹機の概念図、第２図は本発
明による排気弁付ピストンの縦断面図、第３図は
排気弁開の状態にある要部断面図、第４図は排気
弁のタイミング線図を示す。
１……ピストン、２……バルブシート、３……
シリンダ、４……バルブシリンダ、５……通気
口、６……パツキン、７……パツキン押え、８，
９……スプリング、１０……吸気口、１１……排
気口、１２……膨脹空間。
Fig. 1 is a conceptual diagram of a conventional expander, Fig. 2 is a vertical cross-sectional view of a piston with an exhaust valve according to the present invention, Fig. 3 is a cross-sectional view of the main part of the exhaust valve in the open state, and Fig. 4 is a diagram of the exhaust valve. The timing diagram is shown below. 1... Piston, 2... Valve seat, 3...
Cylinder, 4... Valve cylinder, 5... Vent, 6... Packing, 7... Packing holder, 8,
9...Spring, 10...Intake port, 11...Exhaust port, 12...Expansion space.
Claims (1)
有するシリンダと、該シリンダ内を駆動装置に連
動して上下動するピストンを備えた極低温用膨脹
機において、 前記ピストン下端外周にバルブシリンダを上下
動可能に装嵌し、該バルブシリンダの上端部にピ
ストンに形成した溝内を摺動する係合部を形成
し、ピストンの溝の上部係合面とバルブシリンダ
上端面との間にスプリングを挿入すると共に、バ
ルブシリンダの下端に吸気ガスおよび排気ガスが
出入りする通気口を穿設し、該通気口の周縁に前
記バルブシートに当接可能なパツキンを設け、シ
リンダの底面とバルブシリンダの下端面との面に
スプリングを挿入してなることを特徴とする極低
温用膨脹機の自動排気弁。[Scope of Claims] 1. A cryogenic expansion machine comprising a cylinder having a valve seat, an intake port, and an exhaust port at the bottom, and a piston that moves up and down within the cylinder in conjunction with a drive device, including: an outer periphery of the lower end of the piston; A valve cylinder is fitted so as to be movable up and down, and an engagement part that slides in a groove formed in the piston is formed at the upper end of the valve cylinder, and the upper engagement surface of the groove of the piston and the upper end surface of the valve cylinder are connected to each other. A spring is inserted between the valve cylinders, and a vent is provided at the bottom end of the valve cylinder through which intake gas and exhaust gas enter and exit, and a gasket that can come into contact with the valve seat is provided around the periphery of the vent. An automatic exhaust valve for a cryogenic expansion machine, characterized in that a spring is inserted between the surface of the valve cylinder and the lower end surface of the valve cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5075780A JPS56146963A (en) | 1980-04-17 | 1980-04-17 | Automatic exhaust valve for cryogenic expanding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5075780A JPS56146963A (en) | 1980-04-17 | 1980-04-17 | Automatic exhaust valve for cryogenic expanding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56146963A JPS56146963A (en) | 1981-11-14 |
| JPS6160347B2 true JPS6160347B2 (en) | 1986-12-20 |
Family
ID=12867705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5075780A Granted JPS56146963A (en) | 1980-04-17 | 1980-04-17 | Automatic exhaust valve for cryogenic expanding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56146963A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02145446U (en) * | 1989-05-09 | 1990-12-10 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60159562A (en) * | 1984-01-26 | 1985-08-21 | 株式会社東芝 | adiabatic expansion engine |
-
1980
- 1980-04-17 JP JP5075780A patent/JPS56146963A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02145446U (en) * | 1989-05-09 | 1990-12-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56146963A (en) | 1981-11-14 |
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