JP2007303628A

JP2007303628A - Liquid forcibly feeding device

Info

Publication number: JP2007303628A
Application number: JP2006134985A
Authority: JP
Inventors: Masahisa Hiroya; 昌久広谷
Original assignee: TLV Co Ltd
Current assignee: TLV Co Ltd
Priority date: 2006-05-15
Filing date: 2006-05-15
Publication date: 2007-11-22

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid forcibly feeding device for forcibly feeding liquid in a short time by producing quick and uniform pressure rise in a liquid reserving space when an operating fluid introduction port is opened. <P>SOLUTION: A sealed container 2 has the operating fluid introduction port 11, an operating fluid discharge port 13, a liquid flow-in port 16 and a liquid flow-out port 17. In the sealed container 2, there are arranged a float 3, an air supply valve 20 for opening/closing the operating fluid introduction port 11, and an air exhaust valve 21 for opening/closing the operating fluid discharge port 13. The float 3 is moved up or down depending on the liquid level of liquid reserved in the liquid reserving space 10 of the sealed container 2 to change over the air supply valve 20 in the operating fluid introduction port 11 and the air exhaust valve 21 in the operating fluid discharge port 13 to be opened/closed so that initially the air exhaust valve 21 is opened and the air supply valve 20 is closed for the liquid to flow in from the liquid flow-in port 16 and then the air exhaust valve 21 is closed and the air supply valve 20 is opened for the liquid reserved in the liquid reserving space 10 to be forcibly fed from the liquid flow-out port 17. An opening 26 is provided on an almost center axis A in the upper part of the liquid reserving space 10 to form the opening end of the operating fluid introduction port 11 on the side of the liquid reserving space 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、温水や燃料等の液体を圧送する液体圧送装置に関するものである。本発明の液体圧送装置は、各種蒸気使用装置で発生した復水をボイラーや廃熱利用箇所に送る装置として特に適するものである。 The present invention relates to a liquid pumping device that pumps liquid such as hot water or fuel. The liquid pressure feeding device of the present invention is particularly suitable as a device for sending condensate generated in various steam using devices to a boiler or a waste heat utilization site.

従来の液体圧送装置は、密閉容器に作動流体導入口と作動流体排出口と液体流入口及び液体排出口が設けられ、密閉容器内にフロートと作動流体導入口を開閉する給気弁及び作動流体排出口を開閉する排気弁が配置され、密閉容器内の液体溜空間に溜った液体の液面に応じて昇降するフロートにより作動流体導入口の給気弁と作動流体排出口の排気弁の開閉を切り換えて、初めに排気弁を開き給気弁を閉じて液体流入口から液体溜空間に液体を流入させ、次いで排気弁を閉じ給気弁を開いて液体溜空間に溜った液体を液体排出口から圧送する液体圧送装置において、作動流体導入口の液体溜空間側開口端を液体溜空間の上部の側方に設けたものである。 In a conventional liquid pumping device, a closed container is provided with a working fluid inlet, a working fluid outlet, a liquid inlet and a liquid outlet, and a supply valve and a working fluid for opening and closing the float and the working fluid inlet in the sealed container. An exhaust valve that opens and closes the discharge port is arranged, and the supply valve of the working fluid inlet and the exhaust valve of the working fluid discharge port are opened and closed by a float that moves up and down according to the liquid level of the liquid accumulated in the liquid storage space in the sealed container First, the exhaust valve is opened and the air supply valve is closed to allow liquid to flow into the liquid reservoir space.The exhaust valve is then closed and the air supply valve is opened to allow the liquid accumulated in the liquid reservoir space to be discharged. In the liquid pumping apparatus that pumps from the outlet, the liquid reservoir space side opening end of the working fluid inlet is provided on the side of the upper portion of the liquid reservoir space.

上記従来の液体圧送装置は、液体を圧送するために作動流体導入口を開いてから、液体溜空間の圧力が所定の値まで上昇するのに時間がかかり過ぎるために、液体の圧送に時間がかかってしまう問題点があった。これは、作動流体導入口の液体溜空間側開口端が液体溜空間の上部の側部に設けられているために、液体溜空間の圧力が素早く均一に上昇しないためである。
特許第３２７３３４７号 In the conventional liquid pumping device, since it takes too much time for the pressure in the liquid reservoir space to rise to a predetermined value after opening the working fluid introduction port to pump the liquid, it takes time to pump the liquid. There was a problem that it took. This is because the liquid reservoir space side opening end of the working fluid introduction port is provided on the upper side of the liquid reservoir space, so that the pressure of the liquid reservoir space does not rise quickly and uniformly.
Japanese Patent No. 3273347

解決しようとする課題は、作動流体導入口が開かれると液体溜空間の圧力が素早く均一に上昇し、短時間に液体を圧送できる液体圧送装置を提供することである。 The problem to be solved is to provide a liquid pumping device capable of quickly and uniformly increasing the pressure of the liquid reservoir space when the working fluid introduction port is opened and pumping the liquid in a short time.

本発明は、密閉容器に作動流体導入口と作動流体排出口と液体流入口及び液体排出口が設けられ、密閉容器内にフロートと作動流体導入口を開閉する給気弁及び作動流体排出口を開閉する排気弁が配置され、密閉容器内の液体溜空間に溜った液体の液面に応じて昇降するフロートにより作動流体導入口の給気弁と作動流体排出口の排気弁の開閉を切り換えて、初めに排気弁を開き給気弁を閉じて液体流入口から液体溜空間に液体を流入させ、次いで排気弁を閉じ給気弁を開いて液体溜空間に溜った液体を液体排出口から圧送する液体圧送装置において、作動流体導入口の液体溜空間側開口端を液体溜空間の上部のほぼ中心軸上に設けたことを特徴とする。 According to the present invention, a closed container is provided with a working fluid inlet, a working fluid outlet, a liquid inlet and a liquid outlet, and an air supply valve and a working fluid outlet for opening and closing the float and the working fluid inlet are provided in the sealed container. An exhaust valve that opens and closes is arranged, and the supply valve of the working fluid inlet and the exhaust valve of the working fluid discharge port are switched between opening and closing by a float that moves up and down according to the liquid level of the liquid accumulated in the liquid storage space in the sealed container. First, the exhaust valve is opened and the air supply valve is closed to allow liquid to flow from the liquid inlet to the liquid reservoir space, then the exhaust valve is closed and the air supply valve is opened to pump the liquid accumulated in the liquid reservoir space from the liquid discharge port. In the liquid pumping apparatus, the opening end on the liquid reservoir space side of the working fluid introduction port is provided on the substantially central axis of the upper portion of the liquid reservoir space.

本発明は、作動流体導入口の液体溜空間側開口端を液体溜空間の上部のほぼ中心軸上に設けることにより、作動流体導入口が開かれると液体溜空間の圧力が素早く均一に上昇し、短時間に液体溜空間の液体を圧送できるという優れた効果を生じる。 According to the present invention, by providing the opening end on the liquid reservoir space side of the working fluid inlet on the substantially central axis at the top of the liquid reservoir space, the pressure of the liquid reservoir space rises quickly and uniformly when the working fluid inlet is opened. This produces an excellent effect that the liquid in the liquid storage space can be pumped in a short time.

本発明の液体圧送装置は、作動流体導入口の液体溜空間側開口端を液体溜空間の上部のほぼ中心軸上に設けたものである。そのため、作動流体導入口が開かれると作動流体が液体溜空間の上部のほぼ中心軸上から液体溜空間に導入され、液体溜空間の圧力が素早く均一に上昇する。そのため、短時間に液体溜空間の液体を圧送できる。 In the liquid pumping device of the present invention, the opening end on the liquid reservoir space side of the working fluid introduction port is provided on the substantially central axis at the upper part of the liquid reservoir space. Therefore, when the working fluid introduction port is opened, the working fluid is introduced into the liquid reservoir space from substantially the central axis above the liquid reservoir space, and the pressure of the liquid reservoir space rises quickly and uniformly. Therefore, the liquid in the liquid storage space can be pumped in a short time.

上記の技術的手段の具体例を示す実施例を説明する（図１参照）。本実施例の液体圧送装置１は密閉容器２内にフロート３と切替え弁４及びスナップ機構５が配されたものである。密閉容器２は本体部７と蓋部８が図示しないネジによって結合され、内部に液体溜空間１０が形成されたものである。蓋部８には作動流体導入口１１，作動流体排出口１３，液体流入口１６，液体排出口１７が設けられている。 An embodiment showing a specific example of the above technical means will be described (see FIG. 1). The liquid pumping apparatus 1 according to the present embodiment has a float 3, a switching valve 4, and a snap mechanism 5 arranged in a sealed container 2. The sealed container 2 has a main body portion 7 and a lid portion 8 connected by screws (not shown), and a liquid reservoir space 10 is formed inside. The lid 8 is provided with a working fluid introduction port 11, a working fluid discharge port 13, a liquid inflow port 16, and a liquid discharge port 17.

作動流体導入口１１の内側に給気弁２０が取り付けられ、作動流体排出口１３の内側に排気弁２１が取り付けられている。給気弁２０は弁ケース２２と弁体２３及び昇降棒２４によって構成される。弁ケース２２は軸方向に貫通孔を有し、貫通孔の上端面は弁座２５として機能する。弁ケース２２の中間部には前記した貫通孔と液体溜空間１０とを連通する４つの開口２６が設けられている。開口２６が作動流体導入口１１の液体溜空間１０側開口端を形成し、液体溜空間１０の上部のほぼ中心軸Ａ上に位置する。給気弁２０の弁ケース２２の先端は作動流体導入口１１の中にねじ込まれている。弁体２３は球状で作動流体導入口１１側にあり、昇降棒２４の上端が当接することにより開閉される。昇降棒２４は弁ケース２２の貫通孔を通って液体溜空間１０側に抜け、連接板２７に当接するようになっている。連接板２７は動力伝達軸２８に連結され、動力伝達軸２８はスナップ機構５と連結されている。排気弁２１は弁ケース２９と弁体３０と昇降棒３１によって構成される。弁ケース２９は軸方向に貫通孔を有し、貫通孔の内部に弁座３２があり、弁座３２の下から昇降棒３１の上端に保持固定された弁体３０が当接して開閉を行うものである。昇降棒３１の下端はピンで弁軸操作棒２８に連結されている。給気弁２０と排気弁２１で切替え弁４が構成され、給気弁２０が開くと排気弁２１は閉じ、給気弁２０が閉じると排気弁２１は開く。 An air supply valve 20 is attached inside the working fluid introduction port 11, and an exhaust valve 21 is attached inside the working fluid discharge port 13. The air supply valve 20 includes a valve case 22, a valve body 23, and an elevating rod 24. The valve case 22 has a through hole in the axial direction, and the upper end surface of the through hole functions as the valve seat 25. Four openings 26 are provided in the intermediate portion of the valve case 22 to communicate the through hole and the liquid reservoir space 10. The opening 26 forms an opening end on the liquid reservoir space 10 side of the working fluid introduction port 11, and is positioned substantially on the central axis A above the liquid reservoir space 10. The tip of the valve case 22 of the air supply valve 20 is screwed into the working fluid inlet 11. The valve body 23 is spherical and is on the working fluid inlet 11 side, and is opened and closed when the upper end of the elevating rod 24 abuts. The lifting / lowering rod 24 passes through the through hole of the valve case 22 to the liquid reservoir space 10 side and comes into contact with the connecting plate 27. The connecting plate 27 is connected to a power transmission shaft 28, and the power transmission shaft 28 is connected to the snap mechanism 5. The exhaust valve 21 includes a valve case 29, a valve body 30, and an elevating rod 31. The valve case 29 has a through hole in the axial direction, and has a valve seat 32 inside the through hole. The valve body 30 held and fixed to the upper end of the lifting rod 31 from below the valve seat 32 makes contact and opens and closes. Is. The lower end of the elevating rod 31 is connected to the valve shaft operating rod 28 by a pin. The switching valve 4 is constituted by the air supply valve 20 and the exhaust valve 21, and when the air supply valve 20 is opened, the exhaust valve 21 is closed, and when the air supply valve 20 is closed, the exhaust valve 21 is opened.

フロート３はフロートアーム３４と揺動軸３５を介してブラケット３６によって支持されている。ブラケット３６は図示しないネジによって密閉容器２の蓋部８に一体的に取り付けられている。スナップ機構５はフロートアーム３４、副アーム３７、圧縮状態のコイルバネ３８で構成される。フロートアーム３４は平行に対向した２枚の板よりなり、左端にフロート３が固着され、右側部が揺動軸３５によって回転可能に支持されている。従って、フロート３は揺動軸３５を中心として上下に揺動する。フロートアーム３４の右端部は下方に突出し、突出部に揺動軸３５と平行な第１の軸３９が掛け渡されている。第１の軸３９に第１バネ受け部材４０が回転可能に支持されている。また、揺動軸３５には副アーム３７の上端部が回転可能に支持されている。副アーム３７は平行に対向した２枚の板よりなり、下端部に揺動軸３５と平行な第２の軸４１が掛け渡されている。第２の軸４１に第２バネ受け部材４２が回転可能に支持されている。第１及び第２のバネ受け部材４０，４２の間に圧縮状態のコイルバネ３８が配置されている。 The float 3 is supported by a bracket 36 via a float arm 34 and a swing shaft 35. The bracket 36 is integrally attached to the lid portion 8 of the sealed container 2 by screws (not shown). The snap mechanism 5 includes a float arm 34, a sub arm 37, and a coil spring 38 in a compressed state. The float arm 34 is composed of two parallel opposing plates, the float 3 is fixed to the left end, and the right side portion is rotatably supported by the swing shaft 35. Accordingly, the float 3 swings up and down around the swing shaft 35. The right end portion of the float arm 34 projects downward, and a first shaft 39 parallel to the swing shaft 35 is stretched over the projecting portion. A first spring receiving member 40 is rotatably supported on the first shaft 39. Further, the upper end of the sub arm 37 is rotatably supported on the swing shaft 35. The sub arm 37 is composed of two plates facing each other in parallel, and a second shaft 41 parallel to the swing shaft 35 is spanned on the lower end portion. A second spring receiving member 42 is rotatably supported on the second shaft 41. A coil spring 38 in a compressed state is disposed between the first and second spring receiving members 40 and 42.

副アーム３７上端部の揺動軸３５の右側に揺動軸３５と平行な第３の軸４５が掛け渡され、第３の軸４５に動力伝達軸２８の下端が連結されている。揺動軸３５と平行でフロートアーム３４の揺動範囲を規制するストッパー軸５１，５２がブラケット３６によって支持されている。また揺動軸３５と平行で副アーム３７の回転範囲を規制するストッパー軸５３がブラケット３６によって支持されている。 A third shaft 45 parallel to the swing shaft 35 is spanned to the right side of the swing shaft 35 at the upper end of the sub arm 37, and the lower end of the power transmission shaft 28 is connected to the third shaft 45. Stopper shafts 51 and 52 that are parallel to the swing shaft 35 and restrict the swing range of the float arm 34 are supported by the bracket 36. A stopper shaft 53 that is parallel to the swing shaft 35 and restricts the rotation range of the sub arm 37 is supported by the bracket 36.

次に本実施例の液体圧送装置１の作用について、作動流体として蒸気を用いた場合の一連の動作手順を追うことによって説明する。まず液体圧送装置１の外部配管は作動流体導入口１１が高圧の蒸気源に接続され、作動流体排出口１３は蒸気循環配管に接続される。液体流入口１６は外部から液体溜空間１０に向かって開く逆止弁（図示せず）を介して蒸気使用装置等の負荷に接続され、液体排出口１７は液体溜空間１０から外部に向かって開く逆止弁（図示せず）を介してボイラー等の液体圧送先へ接続される。 Next, the operation of the liquid pumping apparatus 1 of this embodiment will be described by following a series of operation procedures when steam is used as the working fluid. First, in the external piping of the liquid pumping apparatus 1, the working fluid inlet 11 is connected to a high-pressure steam source, and the working fluid outlet 13 is connected to the steam circulation piping. The liquid inlet 16 is connected to a load such as a vapor using device via a check valve (not shown) that opens from the outside toward the liquid reservoir space 10, and the liquid outlet 17 is directed outward from the liquid reservoir space 10. It is connected to a liquid pumping destination such as a boiler via an open check valve (not shown).

本実施例の液体圧送装置１の液体溜空間１０に復水が無い場合は、図１に示すようにフロート３は底部に位置する。このとき、切替え弁４における給気弁２０が閉じられ、排気弁２１が開かれている。そして、蒸気使用装置等の負荷内で復水が発生すると、復水は圧送液体流入口１６から液体圧送装置１に流下して、液体溜空間１０に溜る。液体溜空間１０に溜った復水によってフロート３が浮上すると、フロートアーム３４が揺動軸３５を中心に時計回り方向に回転し、コイルバネ３８との連結部である第１の軸３９が左方に移動して揺動軸３５と第２の軸４１を結ぶ線の延長線上に近付き、コイルバネ３８が圧縮変形する。そしてフロート３が更に浮上して第１の軸３９が揺動軸３５と第２の軸４１を結ぶ線の延長線上を越えると、コイルバネ３８が急激に変形を回復し、副アーム３７が反時計回り方向に回転して第３の軸４５が上方にスナップ移動する。その結果、第３の軸４５に連結された動力伝達軸２８が上側にスナップ移動し、給気弁２０が開かれると共に排気弁２１が閉じられる。 When there is no condensate in the liquid reservoir space 10 of the liquid pumping apparatus 1 of the present embodiment, the float 3 is located at the bottom as shown in FIG. At this time, the supply valve 20 in the switching valve 4 is closed and the exhaust valve 21 is opened. When condensate is generated in a load such as a steam using device, the condensate flows down from the pumping liquid inlet 16 to the liquid pumping device 1 and accumulates in the liquid reservoir space 10. When the float 3 rises due to the condensate accumulated in the liquid reservoir space 10, the float arm 34 rotates clockwise about the swing shaft 35, and the first shaft 39, which is a connecting portion with the coil spring 38, moves to the left. To the extension line of the line connecting the swing shaft 35 and the second shaft 41, the coil spring 38 is compressed and deformed. When the float 3 further floats and the first shaft 39 exceeds the extension of the line connecting the oscillating shaft 35 and the second shaft 41, the coil spring 38 suddenly recovers from deformation and the sub arm 37 is counterclockwise. The third shaft 45 snaps upward by rotating in the turning direction. As a result, the power transmission shaft 28 connected to the third shaft 45 snaps upward, and the air supply valve 20 is opened and the exhaust valve 21 is closed.

給気弁２０が開かれて作動流体導入口１１が開放されると、開口２６から液体溜空間１０に高圧蒸気が導入される。このとき、開口２６を液体溜空間１０の上部のほぼ中心軸Ａ上に設けているので、液体溜空間１０の圧力が素早く均一に上昇し、液体溜空間１０に溜った復水は、蒸気圧に押されて圧送液体排出口１７から図示しない逆止弁を介して外部のボイラーや廃熱利用装置へ素早く排出される。復水の排出によって復水溜空間１０の液位が低下すると、フロート３が降下して、フロートアーム３４が揺動軸３５を中心に反時計回り方向に回転し、コイルバネ３８との連結部である第１の軸３９が右方に移動して揺動軸３５と第２の軸４１を結ぶ線の延長線上に近付き、コイルバネ３８が圧縮変形する。そしてフロート３が更に降下して第１の軸３９が揺動軸３５と第２の軸４１を結ぶ線の延長線上を越えると、コイルバネ３８が急激に変形を回復し、副アーム３７が時計回り方向に回転して第３の軸４５が下方にスナップ移動する。その結果、第３の軸４５に連結された動力伝達軸２８が下側にスナップ移動し、給気弁２０が閉じられると共に排気弁２１が開かれる。 When the air supply valve 20 is opened and the working fluid inlet 11 is opened, high-pressure steam is introduced into the liquid reservoir space 10 through the opening 26. At this time, since the opening 26 is provided substantially on the central axis A above the liquid reservoir space 10, the pressure in the liquid reservoir space 10 rises quickly and uniformly, and the condensate accumulated in the liquid reservoir space 10 And is quickly discharged from the pressure liquid discharge port 17 to an external boiler or waste heat utilization device via a check valve (not shown). When the liquid level in the condensate reservoir space 10 is lowered due to the discharge of the condensate, the float 3 descends, and the float arm 34 rotates counterclockwise about the swing shaft 35, which is a connecting portion with the coil spring 38. The first shaft 39 moves to the right and approaches the extension line of the line connecting the swing shaft 35 and the second shaft 41, and the coil spring 38 is compressed and deformed. When the float 3 further descends and the first shaft 39 exceeds the extension of the line connecting the swing shaft 35 and the second shaft 41, the coil spring 38 suddenly recovers from deformation and the sub arm 37 rotates clockwise. Rotate in the direction and the third shaft 45 snaps downward. As a result, the power transmission shaft 28 connected to the third shaft 45 snaps downward, closing the air supply valve 20 and opening the exhaust valve 21.

本発明の実施例の液体圧送装置の断面図。Sectional drawing of the liquid pumping apparatus of the Example of this invention.

符号の説明Explanation of symbols

１液体圧送装置
２密閉容器
３フロート
４切替え弁
５スナップ機構
１０液体溜空間
１１作動流体導入口
１３作動流体排出口
１６液体流入口
１７液体排出口
２０給気弁
２１排気弁
２６開口
２８動力伝達軸
３４フロートアーム
３５揺動軸
３７副アーム
３８コイルバネ
DESCRIPTION OF SYMBOLS 1 Liquid pumping apparatus 2 Sealed container 3 Float 4 Switching valve 5 Snap mechanism 10 Liquid storage space 11 Working fluid inlet 13 Working fluid outlet 16 Liquid inlet 17 Liquid outlet 20 Air supply valve 21 Exhaust valve 26 Open 28 Power transmission shaft 34 Float arm 35 Oscillating shaft 37 Sub arm 38 Coil spring

Claims

密閉容器に作動流体導入口と作動流体排出口と液体流入口及び液体排出口が設けられ、密閉容器内にフロートと作動流体導入口を開閉する給気弁及び作動流体排出口を開閉する排気弁が配置され、密閉容器内の液体溜空間に溜った液体の液面に応じて昇降するフロートにより作動流体導入口の給気弁と作動流体排出口の排気弁の開閉を切り換えて、初めに排気弁を開き給気弁を閉じて液体流入口から液体溜空間に液体を流入させ、次いで排気弁を閉じ給気弁を開いて液体溜空間に溜った液体を液体排出口から圧送する液体圧送装置において、作動流体導入口の液体溜空間側開口端を液体溜空間の上部のほぼ中心軸上に設けたことを特徴とする液体圧送装置。
An air supply valve that opens and closes the float and the working fluid inlet in the sealed container, and an exhaust valve that opens and closes the working fluid outlet in the sealed container provided with a working fluid inlet, a working fluid outlet, a liquid inlet and a liquid outlet. Is switched on and off by opening and closing the supply valve of the working fluid inlet and the exhaust valve of the working fluid discharge port by a float that moves up and down according to the liquid level of the liquid accumulated in the liquid storage space in the sealed container. Liquid pumping device that opens the valve and closes the air supply valve to allow liquid to flow into the liquid reservoir space, then closes the exhaust valve and opens the air supply valve to pump the liquid accumulated in the liquid reservoir space from the liquid discharge port The liquid pumping device according to claim 1, wherein the liquid reservoir space side opening end of the working fluid introduction port is provided substantially on the central axis of the upper portion of the liquid reservoir space.