JP2004340452A

JP2004340452A - Gas-liquid separator

Info

Publication number: JP2004340452A
Application number: JP2003136639A
Authority: JP
Inventors: Tadashi Koike; 正小池
Original assignee: TLV Co Ltd
Current assignee: TLV Co Ltd
Priority date: 2003-05-15
Filing date: 2003-05-15
Publication date: 2004-12-02

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-liquid separator wherein the sufficient fluid passage area of a filter is secured, and the clogging of the filter is reduced. <P>SOLUTION: A swirl vane 12 is mounted in a circular space 11 formed by a main body 1 and an exhaust pipe 10. An upper part of the swirl vane 12 is connected with an inlet 4, and connected with an outlet 5 through a filter 22 inside of the exhaust pipe 10. The hollow cylindrical filter 22 is penetrated through the exhaust pipe 10 and extended into a swirl chamber 14. A clearance 26 is formed between an outer periphery of the filter 22 and an inner periphery of the exhaust pipe 10. The liquid and foreign matters of large mass are shaken out to the external by the swirl blade 11 to be separated. The liquid droplets and foreign matters of small mass are separated when being passed through the filter 22. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、蒸気や圧縮空気や各種ガス等の気体中に混入している復水や凝縮水等の液体を、ケーシング内に旋回流を起こし遠心力によって分離する気液分離器に関する。
【０００２】
【従来の技術】
【特許文献】特開２００２−３３６６２３号公報
これには、ケーシングと排気管で形成する環状空間に旋回羽根を配置し、旋回羽根の上方を入口に連結し、排気管の内側の孔を通してその上方を出口に連結し、環状空間の下方に液溜室を形成して該液溜室の下端を排液口に連結して、排気管と液溜室の間に流体をろ過するフィルターを配置した気液分離器が開示されている。
【０００３】
【発明が解決しようとする課題】
上記従来の気液分離器においては、フィルターの流体通過面積を充分に確保することができず、比較的早期にフィルターが異物によって詰まってしまう問題があった。通常、各種工場やプラントで使用される気液分離器には、流体配管中の錆やゴミやスケール等の異物が混入するために、フィルターではこれらの異物が付着して目詰まりを起こすのである。
【０００４】
従って本発明の課題は、フィルターの流体通過面積が充分に確保でき、フィルターの目詰まりを起こしにくい気液分離器を得ることである。
【０００５】
【課題を解決するための手段】
上記の課題を解決するために講じた本発明の手段は、ケーシングと排気管で形成する環状空間に旋回羽根を配置し、旋回羽根の上方を入口に連結し、排気管の内側の孔を通してその上方を出口に連結し、環状空間の下方に液溜室を形成して該液溜室の下端を排液口に連結して、排気管と液溜室の間に流体をろ過するフィルターを配置したものにおいて、フィルターを排気管の内側を貫通して配置すると共に、フィルターの外周と排気管の内周に所定の隙間を設けたものである。
【０００６】
【発明の実施の形態】
フィルターを排気管の内側を貫通して配置すると共に、フィルターの外周と排気管の内周に所定の隙間を設けたことにより、排気管の内側に位置するフィルター部もフィルターとしての機能を果たすこととなり、その分フィルターの通過面積を増やすことができる。
【０００７】
【実施例】
図１において、ケーシングは円筒状本体１と出入口部材２をクランプ継手３で結合して形成する。本体１の下部に底蓋６を溶接によって取り付け、この底蓋６の下端中央に排液口８を設けた排液管９を配置する。出入口部材２には左右同軸上に入口４と出口５を設ける。
【０００８】
本体１は円筒形状で上部内面の直径を、下部内面の直径よりもやや大きく形成して、この上部内面と下部内面との間の環状の段部７に、二重のほぼ円筒形状の排気管１０を載せ、この排気管１０を出入口部材２との間で固定する。排気管１０は上下端部が末広がり形状で、中央部分２０を最狭部とする。排気管１０の外側円筒２１は省略して本体１で兼用することもできる。排気管１０の内外円筒の間に形成される環状空間１１に、排気管１０と一体に旋回羽根１２を形成する。
【０００９】
入口４は連通孔１３を通して下方の環状空間１１に連結し、一方、排気管１０の内側は後述するフィルター２２を介して上方の出口５に連結する。本体１の下部内面と底蓋６の内面との間に旋回室１４と、この旋回室１４の下方に液溜室１５を形成し、液溜室１５の下端を排液口８に連結する。
【００１０】
旋回室１４と排気管１０の内側に長尺円筒状の中空フィルター２２を配置する。フィルター２２の下端部にはプラグ２３を取り付けて閉止状態とし、一方、フィルター２２の上端部には、排気管１０の上部に取り付けた雌ネジ部材２４にネジ結合する中空雄ネジ部２５を溶接により取り付けて配置する。
【００１１】
フィルター２２は、側面の円筒部に多数の微細な貫通孔を有し、入口４と環状空間１１を流下してきた流体から錆等の異物をろ過して出口５側へ排出するものである。フィルター２２の粒度は２マイクロから１０マイクロ程度が好適である。
【００１２】
長尺中空フィルター２２は排気管１０の内側を貫通すると共に、フィルター２２の外周と排気管１０の内周に所定の隙間２６を形成する。この隙間２６は、排気管１０の上下でそれぞれ漸拡し、中央部を最狭とする。フィルター２２の全長の約半分を排気管１０内に配置し、残りの約半分を旋回室１４内に配置する。
【００１３】
旋回室１４と液溜室１５とを隔てる隔壁部材１７を配置する。隔壁部材１７は円板形状で外周に４個の突起１８を有し、突起１８の外端を底蓋６に溶接して固定する。突起１８の間の隔壁部材１７外周縁と底蓋６内周壁との間に液体通過用隙間１９を形成する。
【００１４】
出入口部材２の中央で、フィルター２２の中心軸とほぼ同軸上にプラグ孔２７を配置する。このプラグ孔２７は、フィルター２２に付着した異物を逆洗する場合に、逆洗用の流体を供給したり、あるいは、出口５側内の流体圧力を検出する圧力検出手段を取り付けることができるものである。プラグ孔２７に圧力検出手段を取り付けると、図示しない入口４の側に取り付けた圧力検出手段との指示値の差異によって、入口４と出口５の間の圧力損失、すなわち、フィルター２２の目詰まり度合、を検出することができる。
【００１５】
入口４から入った液体や錆等の異物を含む気体は旋回羽根１２で旋回される。質量の大きな液体や異物は遠心力の作用で外側に振り出されて分離され、本体１の内周壁に沿って流下し、突起１８の間の液体通過用隙間１９を通って液溜室１５に流入し、排液口８から系外に排出される。
【００１６】
旋回流に含まれる質量の小さな液滴や異物は、中空状フィルター２２を通過する際にろ過されて分離され、フィルター２２外周に沿って流下し、下方の液溜室１５に流入して、排液口８から系外に排出される。この場合、フィルター２２は旋回室１４から排気管１０内を貫通して配置されて長尺状であり、フィルター２２の流体通過面積を充分に確保することができる。フィルター２２の内側へ通過した気体は出口５から外部へ流出する。
【００１７】
旋回室１４でフィルター２２を通過する旋回流には比較的多くの液滴や異物が混入しており、これらはフィルター２２の略下半分の領域でろ過される。一方、フィルター２２の外周と排気管１０の内周の隙間２６を通過する流体は、液滴や異物の混入量は少ないが、通路が狭められることによって流速を増し、より多くの流体がフィルター２２の略上半分を通過して異物がろ過される。このことによって、フィルター２２の全長に渡ってほぼ均一に異物が付着することとなり、フィルター２２の一部が早期に目詰まりしてしまうことはない。
【００１８】
【発明の効果】
上記のように本発明によれば、フィルターの流体通過面積が充分に確保でき、フィルターの目詰まりを起こしにくい気液分離器を得ることができる。
【図面の簡単な説明】
【図１】本発明の気液分離器の断面図。
【符号の説明】
１本体
２出入口部材
３クランプ継手
４入口
５出口
６底蓋
８排液口
１０排気管
１１環状空間
１２旋回羽根
１４旋回室
１５液溜室
１７隔壁部材
１９液体通過用隙間
２２フィルター
２６隙間[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a gas-liquid separator that causes a liquid such as condensed water or condensed water mixed in a gas such as steam, compressed air, or various gases to generate a swirling flow in a casing and separate the liquid by centrifugal force.
[0002]
[Prior art]
[Patent Document] Japanese Patent Application Laid-Open No. 2002-336623 In this, a swirl vane is arranged in an annular space formed by a casing and an exhaust pipe, an upper portion of the swirl blade is connected to an inlet, and a swirl vane is formed through a hole inside the exhaust pipe. Was connected to the outlet, a liquid storage chamber was formed below the annular space, the lower end of the liquid storage chamber was connected to the drain port, and a filter for filtering fluid was disposed between the exhaust pipe and the liquid storage chamber. A gas-liquid separator is disclosed.
[0003]
[Problems to be solved by the invention]
In the above-mentioned conventional gas-liquid separator, there was a problem that the fluid passage area of the filter could not be sufficiently secured, and the filter was clogged with foreign matter relatively early. Normally, gas-liquid separators used in various factories and plants are contaminated with foreign substances such as rust, dust, and scale in the fluid piping. .
[0004]
Accordingly, an object of the present invention is to provide a gas-liquid separator which can sufficiently secure a fluid passage area of a filter and does not easily cause clogging of the filter.
[0005]
[Means for Solving the Problems]
Means of the present invention taken to solve the above-mentioned problem is to arrange a swirl vane in an annular space formed by a casing and an exhaust pipe, connect the upper part of the swirl vane to an inlet, and pass it through a hole inside the exhaust pipe. The upper part is connected to the outlet, the liquid chamber is formed below the annular space, the lower end of the liquid chamber is connected to the drain port, and a filter for filtering fluid is disposed between the exhaust pipe and the liquid chamber. In this configuration, the filter is disposed so as to penetrate the inside of the exhaust pipe, and a predetermined gap is provided between the outer circumference of the filter and the inner circumference of the exhaust pipe.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
By placing the filter through the inside of the exhaust pipe and providing a predetermined gap between the outer circumference of the filter and the inner circumference of the exhaust pipe, the filter part located inside the exhaust pipe also functions as a filter. Thus, the area of the filter passage can be increased accordingly.
[0007]
【Example】
In FIG. 1, the casing is formed by connecting a cylindrical main body 1 and an entrance / exit member 2 with a clamp joint 3. A bottom cover 6 is attached to a lower portion of the main body 1 by welding, and a drain pipe 9 provided with a drain port 8 is disposed at the center of the lower end of the bottom cover 6. The entrance member 2 is provided with an entrance 4 and an exit 5 coaxially on the left and right.
[0008]
The main body 1 has a cylindrical shape, and the diameter of the upper inner surface is formed slightly larger than the diameter of the lower inner surface, and the annular step 7 between the upper inner surface and the lower inner surface has a double substantially cylindrical exhaust pipe. The exhaust pipe 10 is fixed between the entrance pipe 2 and the exhaust pipe 10. The upper and lower ends of the exhaust pipe 10 are divergent, and the central part 20 is the narrowest part. The outer cylinder 21 of the exhaust pipe 10 may be omitted and the main body 1 may be used. A swirl vane 12 is formed integrally with the exhaust pipe 10 in an annular space 11 formed between the inner and outer cylinders of the exhaust pipe 10.
[0009]
The inlet 4 is connected to the lower annular space 11 through the communication hole 13, while the inside of the exhaust pipe 10 is connected to the upper outlet 5 via a filter 22 described later. A swirl chamber 14 is formed between the lower inner surface of the main body 1 and the inner surface of the bottom cover 6, and a liquid reservoir 15 is formed below the swirl chamber 14, and the lower end of the liquid reservoir 15 is connected to the drain port 8.
[0010]
A long cylindrical hollow filter 22 is disposed inside the swirling chamber 14 and the exhaust pipe 10. A plug 23 is attached to the lower end of the filter 22 to close the filter 22, while a hollow male screw part 25 screwed to a female screw member 24 attached to the upper part of the exhaust pipe 10 is welded to the upper end of the filter 22. Attach and place.
[0011]
The filter 22 has a large number of fine through holes in the cylindrical portion on the side surface, and filters foreign substances such as rust from the fluid flowing down the inlet 4 and the annular space 11 and discharges them to the outlet 5 side. The filter 22 preferably has a particle size of about 2 to 10 μm.
[0012]
The long hollow filter 22 penetrates the inside of the exhaust pipe 10 and forms a predetermined gap 26 between the outer periphery of the filter 22 and the inner periphery of the exhaust pipe 10. The gap 26 gradually expands above and below the exhaust pipe 10, and has a narrowest central portion. About half of the entire length of the filter 22 is disposed in the exhaust pipe 10, and about the other half is disposed in the swirl chamber 14.
[0013]
A partition member 17 for separating the swirling chamber 14 and the liquid storage chamber 15 is disposed. The partition member 17 has a disk shape and has four projections 18 on the outer periphery. The outer ends of the projections 18 are fixed to the bottom lid 6 by welding. A liquid passage gap 19 is formed between the outer peripheral edge of the partition member 17 between the projections 18 and the inner peripheral wall of the bottom cover 6.
[0014]
A plug hole 27 is disposed substantially coaxially with the center axis of the filter 22 at the center of the entrance member 2. The plug hole 27 can supply a backwashing fluid when backwashing foreign substances attached to the filter 22 or can be provided with a pressure detecting means for detecting a fluid pressure in the outlet 5 side. It is. When the pressure detecting means is attached to the plug hole 27, the pressure loss between the inlet 4 and the outlet 5, that is, the degree of clogging of the filter 22, is caused by the difference in the indicated value from the pressure detecting means attached to the inlet 4 not shown. , Can be detected.
[0015]
The gas containing foreign matter such as liquid or rust entered from the inlet 4 is swirled by the swirling blades 12. The liquid or foreign matter having a large mass is swung outward and separated by the action of the centrifugal force, flows down along the inner peripheral wall of the main body 1, and passes through the liquid passage gap 19 between the projections 18 to the liquid storage chamber 15. It flows in and is discharged out of the system from the drain port 8.
[0016]
Droplets and foreign matter having a small mass contained in the swirling flow are filtered and separated when passing through the hollow filter 22, flow down along the outer periphery of the filter 22, flow into the lower liquid storage chamber 15, and are discharged. The liquid is discharged from the liquid port 8 to the outside of the system. In this case, the filter 22 is disposed so as to extend from the swirl chamber 14 through the exhaust pipe 10 and has a long shape, so that a sufficient fluid passage area of the filter 22 can be secured. The gas that has passed inside the filter 22 flows out of the outlet 5 to the outside.
[0017]
The swirling flow passing through the filter 22 in the swirling chamber 14 contains a relatively large number of droplets and foreign substances, which are filtered in a substantially lower half area of the filter 22. On the other hand, the fluid passing through the gap 26 between the outer periphery of the filter 22 and the inner periphery of the exhaust pipe 10 has a small amount of liquid droplets and foreign substances mixed therein, but the flow velocity increases due to the narrow passage, and more fluid flows through the filter 22. The foreign matter is filtered through approximately the upper half of the filter. As a result, foreign substances adhere almost uniformly over the entire length of the filter 22, and a part of the filter 22 is not clogged at an early stage.
[0018]
【The invention's effect】
ADVANTAGE OF THE INVENTION As mentioned above, according to this invention, the fluid passage area of a filter can fully be ensured and the gas-liquid separator which does not easily cause clogging of a filter can be obtained.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a gas-liquid separator of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Door member 3 Clamp joint 4 Inlet 5 Outlet 6 Bottom lid 8 Drainage port 10 Exhaust pipe 11 Annular space 12 Swirler 14 Swirling chamber 15 Liquid storage chamber 17 Partition member 19 Liquid passage gap 22 Filter 26 gap

Claims

ケーシングと排気管で形成する環状空間に旋回羽根を配置し、旋回羽根の上方を入口に連結し、排気管の内側の孔を通してその上方を出口に連結し、環状空間の下方に液溜室を形成して該液溜室の下端を排液口に連結して、排気管と液溜室の間に流体をろ過するフィルターを配置したものにおいて、フィルターを排気管の内側を貫通して配置すると共に、フィルターの外周と排気管の内周に所定の隙間を設けたことを特徴とする気液分離器。The swirl vanes are arranged in the annular space formed by the casing and the exhaust pipe, the upper part of the swirl blade is connected to the inlet, the upper part is connected to the outlet through the hole inside the exhaust pipe, and the liquid storage chamber is formed below the annular space. In the case where the filter is formed and the lower end of the liquid storage chamber is connected to the drain port, and a filter for filtering fluid is disposed between the exhaust pipe and the liquid storage chamber, the filter is disposed so as to pass through the inside of the exhaust pipe. A gas-liquid separator characterized in that a predetermined gap is provided between the outer periphery of the filter and the inner periphery of the exhaust pipe.