JP2013024061A - Monitoring system for liquid pressure-feed device - Google Patents

Monitoring system for liquid pressure-feed device Download PDF

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JP2013024061A
JP2013024061A JP2011157348A JP2011157348A JP2013024061A JP 2013024061 A JP2013024061 A JP 2013024061A JP 2011157348 A JP2011157348 A JP 2011157348A JP 2011157348 A JP2011157348 A JP 2011157348A JP 2013024061 A JP2013024061 A JP 2013024061A
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float
sealed container
liquid
rotating plate
port
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JP5806533B2 (en
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Hideaki Yumoto
秀昭 湯本
Suketaka Nishimura
祐貴 西村
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TLV Co Ltd
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TLV Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a monitoring system for a liquid pressure-feed device, in which operation of the liquid pressure-feed device can be detected accurately.SOLUTION: A float position detection switch 33, which detects the position of a float in order to detect operation of a liquid pressure-feed device, is mounted to a sealed container. A monitoring system includes: a case 36, in which the float position detection switch 33 is fixed to the sealed container; a rotary plate 38 which is mounted to be freely rotatable around a center shaft 37 of the case 36; an adhesive coil spring 39, one end of which is fixed to the rotary plate 38 and the another end of which extends above the float and which is rotated by moving up and down the float to rotate the rotary plate 38; a movable shaft 40 which is connected to the rotary plate 38 and displaced in an axis direction of the movable shaft 40 by the rotation of the rotary plate 38; a permanent magnet 41 built in the movable shaft 40; and a magnetic switch 42 which is operated by a magnetic field of the permanent magnet 41. When the float is floated up to a second predetermined height position, the magnetic switch is turned ON, and when the float is moved to a lower position than the second predetermined height position, the magnetic switch is turned OFF.

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のモニタリングシステムに関するものである。本発明の液体圧送装置のモニタリングシステムは、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のモニタリングシステムとして特に適するものである。 The present invention relates to a monitoring system for a liquid pumping apparatus that pumps liquid such as hot water or fuel. The monitoring system for a liquid pressure feeding device of the present invention is particularly suitable as a monitoring system for a device for sending condensate generated by various steam using devices to a boiler or a waste heat utilization site.

従来の液体圧送装置のモニタリングシステムは、例えば特許文献１に開示されている。これは、密閉容器に作動気体の給気口と排気口及び圧送液体の流入口と圧送口が設けられ、密閉容器内にフロートが配置され、フロートが所定高位に達すると給気口が開口されると共に排気口が閉口されて給気口から密閉容器内に作動気体が供給されることにより密閉容器内の液体が圧送口から圧送され、フロートが所定低位に達すると給気口が閉口されると共に排気口が開口されてフロートが所定高位に達するまで密閉容器内の作動気体が排気口から排気されると共に液体が流入口から密閉容器内に流入される液体圧送装置において、液体圧送装置の作動を検出するために液体圧送装置の温度や圧力あるいは液位レベルを検出するものである。 A conventional monitoring system for a liquid pumping device is disclosed in Patent Document 1, for example. This is because an air supply port and an exhaust port for working gas and an inflow port and a pumping port for pressurized liquid are provided in the sealed container, and a float is arranged in the sealed container, and the air supply port is opened when the float reaches a predetermined high level. In addition, the exhaust port is closed and the working gas is supplied from the air supply port into the sealed container, whereby the liquid in the sealed container is pumped from the pressure feed port, and the air supply port is closed when the float reaches a predetermined low level. In addition, the operation of the liquid pumping device is performed in the liquid pumping device in which the working gas in the sealed container is exhausted from the exhaust port and the liquid flows into the sealed container from the inlet until the float reaches a predetermined high level. In order to detect this, the temperature, pressure or liquid level of the liquid pumping device is detected.

特開２００２−１８１２８７JP2002-181287

上記従来の液体圧送装置のモニタリングシステムにおいて、液体圧送装置の温度を検出ものは液体と作動気体の温度差が小さい場合に作動を正確に検出できない、液体圧送装置の圧力を検出ものは作動気体の圧力が低い場合に作動を正確に検出できない、液体圧送装置の液位を検出ものは液位とフロートの位置が一致しない場合に作動を正確に検出できないという問題点があった。 In the above conventional liquid pumping device monitoring system, the device that detects the temperature of the liquid pumping device cannot detect the operation accurately when the temperature difference between the liquid and the working gas is small. When the pressure is low, the operation cannot be accurately detected, and those that detect the liquid level of the liquid feeding device have a problem that the operation cannot be accurately detected when the liquid level and the float position do not match.

したがって本発明が解決しようとする課題は、液体圧送装置の作動を正確に検出できる液体圧送装置のモニタリングシステムを提供することである。 Therefore, the problem to be solved by the present invention is to provide a monitoring system for a liquid pumping device that can accurately detect the operation of the liquid pumping device.

上記の課題を解決するために、本発明の液体圧送装置のモニタリングシステムは、密閉容器に作動気体の給気口と排気口及び圧送液体の流入口と圧送口が設けられ、密閉容器内にフロートが配置され、フロートが所定高位に達すると給気口が開口されると共に排気口が閉口されて給気口から密閉容器内に作動気体が供給されることにより密閉容器内の液体が圧送口から圧送され、フロートが所定低位に達すると給気口が閉口されると共に排気口が開口されてフロートが所定高位に達するまで密閉容器内の作動気体が排気口から排気されると共に液体が流入口から密閉容器内に流入される液体圧送装置において、液体圧送装置の作動を検出するためにフロートの位置を検出するフロート位置検出スイッチを密閉容器に取り付け、フロート位置検出スイッチが密閉容器に固定されたケースと、ケースの中心軸の回り回転自在に取付けられた回転板と、回転板に一端が固定され他端がフロートの上方に延びてフロートの浮上降下により回転して回転板を回転せしめる密着コイルバネと、回転板に連結され回転板の回転に伴って軸心方向に変位する可動軸と、可動軸に内蔵された永久磁石と、永久磁石の磁界により動作する磁気スイッチとから構成され、フロートが所定高位よりも少し低位の第２所定高位まで浮上したときに磁気スイッチがＯＮしフロートが第２所定高位よりも降下したときに磁気スイッチがＯＦＦすることを特徴とするものである。 In order to solve the above problems, a monitoring system for a liquid pressure feeding device according to the present invention is provided with a working gas supply port and an exhaust port and a pressure liquid feeding port and a pressure feeding port provided in a sealed container, and a float is formed in the sealed container. When the float reaches a predetermined high level, the air supply port is opened and the exhaust port is closed, and the working gas is supplied from the air supply port into the sealed container, so that the liquid in the sealed container is discharged from the pressure feed port. When the float reaches the predetermined low level, the air supply port is closed and the exhaust port is opened, and the working gas in the sealed container is exhausted from the exhaust port and the liquid is discharged from the inflow port until the float reaches the predetermined high level. In the liquid pumping device that flows into the sealed container, a float position detection switch that detects the position of the float is attached to the sealed container in order to detect the operation of the liquid pumping device. A case in which the switch is fixed to the airtight container, a rotating plate that is rotatably mounted around the central axis of the case, one end fixed to the rotating plate, and the other end extending above the float and rotating due to the floating rise and fall of the float A coil coil that rotates the rotating plate, a movable shaft that is connected to the rotating plate and is displaced in the axial direction along with the rotation of the rotating plate, a permanent magnet built in the movable shaft, and a magnet that operates by the magnetic field of the permanent magnet The magnetic switch is turned on when the float floats to a second predetermined high level slightly lower than the predetermined high level, and the magnetic switch is turned off when the float falls below the second predetermined high level. To do.

本発明によれば、液体圧送装置の作動を検出するためにフロートの位置を検出するフロート位置検出スイッチを密閉容器に取り付け、フロート位置検出スイッチが密閉容器に固定されたケースと、ケースの中心軸の回り回転自在に取付けられた回転板と、回転板に一端が固定され他端がフロートの上方に延びてフロートの浮上降下により回転して回転板を回転せしめる密着コイルバネと、回転板に連結され回転板の回転に伴って軸心方向に変位する可動軸と、可動軸に内蔵された永久磁石と、永久磁石の磁界により動作する磁気スイッチとから構成され、フロートが所定高位よりも少し低位の第２所定高位まで浮上したときに磁気スイッチがＯＮしフロートが第２所定高位よりも降下したときに磁気スイッチがＯＦＦすることにより、液体圧送装置の作動を正確に検出できるという効果を奏する。 According to the present invention, a float position detection switch for detecting the position of the float for detecting the operation of the liquid pumping device is attached to the sealed container, the case where the float position detection switch is fixed to the sealed container, and the central axis of the case A rotating plate that is rotatably attached to the rotating plate, a close-contact coil spring that is fixed to the rotating plate, has one end fixed to the rotating plate and extends above the float, and rotates by the floating and descending of the float to rotate the rotating plate. It consists of a movable shaft that is displaced in the axial direction as the rotating plate rotates, a permanent magnet built in the movable shaft, and a magnetic switch that operates by the magnetic field of the permanent magnet, and the float is slightly lower than the predetermined high level. The magnetic switch is turned on when ascending to the second predetermined high level, and the magnetic switch is turned off when the float is lowered below the second predetermined high level. An effect that the operation of the device can be accurately detected.

本発明の実施の形態に係わる液体圧送装置のモニタリングシステムの構成図である。It is a block diagram of the monitoring system of the liquid pumping apparatus concerning embodiment of this invention. 図１の液体圧送装置の断面図である。It is sectional drawing of the liquid pumping apparatus of FIG. 図１の液体圧送装置のフロート位置検出スイッチの拡大断面図である。It is an expanded sectional view of the float position detection switch of the liquid pumping apparatus of FIG.

以下、本発明の実施の形態について、図１乃至図３を参照して説明する。液体圧送装置２４は、本体１と蓋２で密閉容器を構成して、密閉容器内にフロート３とフロート弁４とスナップ機構部５を配置すると共に、蓋２に作動気体の給気口６と排気口７及び圧送液体の流入口８と圧送口９を設ける。流入口８が密閉容器への液体の流れだけを許容する流入側逆止弁２０を介して蒸気使用装置としての熱交換器２５に連通する流入管２１に接続され、圧送口９が液体圧送先への液体の流れだけを許容する圧送側逆止弁２２を介して液体圧送先としてのボイラー２９に連通する圧送管３０に接続され、給気口６が高圧の作動蒸気源から熱交換器２５に蒸気が供給される蒸気配管３１に連通する給気管３２に接続され、排気口７が蒸気循環側（図示せず）に連通する排気管２３に接続される。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. The liquid pumping device 24 forms a sealed container with the main body 1 and the lid 2, and the float 3, the float valve 4, and the snap mechanism portion 5 are arranged in the sealed container, and the working gas supply port 6 is provided in the lid 2. An exhaust port 7, a pumping liquid inlet 8 and a pumping port 9 are provided. The inflow port 8 is connected to an inflow pipe 21 communicating with a heat exchanger 25 as a steam using device via an inflow side check valve 20 that allows only a liquid flow to the sealed container, and the pressure port 9 is a liquid pressure destination. Is connected to a pressure-feed pipe 30 communicating with a boiler 29 as a liquid pressure-feed destination via a pressure-feed-side check valve 22 that allows only the flow of liquid to the heat supply port 25. The exhaust pipe 7 is connected to an exhaust pipe 23 communicating with a steam circulation side (not shown).

フロート３は支点１０を回転中心として上下に浮上降下して、ダブル弁機構のフロート弁４を上下に移動させて圧送口９を連通遮断すると共に、第１レバー１１を支点１２を中心として上下に変位させる。同じく支点１２を中心として回転自在に第２レバー１３を配置し、この第２レバー１３の端部と第１レバー１１の端部の間に圧縮状態のコイルバネ１４を取り付ける。第２レバー１３の上部に操作棒１５を連結する。操作棒１５の上部には、排気口７を開閉する球状の排気弁体１６を取り付けると共に、操作棒１５の中段部に操作レバー１７を固着する。操作レバー１７の上部に上下動自在に給気棒１８を配置して、この給気棒１８の更に上方に給気口６を開閉する球状の給気弁体１９を自由状態で配置する。 The float 3 floats up and down around the fulcrum 10 as the center of rotation, moves the float valve 4 of the double valve mechanism up and down to cut off the communication of the pressure feed port 9, and moves the first lever 11 up and down around the fulcrum 12. Displace. Similarly, a second lever 13 is disposed so as to be rotatable about the fulcrum 12, and a compressed coil spring 14 is attached between the end of the second lever 13 and the end of the first lever 11. The operation rod 15 is connected to the upper part of the second lever 13. A spherical exhaust valve body 16 that opens and closes the exhaust port 7 is attached to the upper portion of the operation rod 15, and an operation lever 17 is fixed to the middle portion of the operation rod 15. An air supply rod 18 is arranged above the operation lever 17 so as to be movable up and down, and a spherical air supply valve body 19 that opens and closes the air supply port 6 is further arranged above the air supply rod 18 in a free state.

液体圧送装置２４及びフロート位置検出スイッチ３３とで液体圧送装置のモニタリングシステムを構成する。フロート位置検出スイッチ３３は図３に示すように、本体１にねじ結合により固定されたケース３６と、ケース３６の内端二又部分３６ａに中心軸３７により回転自在に取付けられた回転板３８と、回転板３８に一端が圧入により固定され他端がフロート３の上方に延びてフロート３の浮上降下により回転して回転板３８を回転せしめる密着コイルバネ３９と、一端二又部分４０ａが連結軸４１により回転板３８に連結され回転板３８の回転に伴って軸心方向に変位する可動軸４０と、可動軸４０の他端に内蔵された永久磁石４２と、ケース３５の隔壁３５ｂにより永久磁石４２とは隔てられ永久磁石４２の磁界により動作する磁気スイッチ４３とから構成する。 The liquid pumping device 24 and the float position detection switch 33 constitute a liquid pumping device monitoring system. As shown in FIG. 3, the float position detection switch 33 includes a case 36 fixed to the main body 1 by screw coupling, and a rotating plate 38 rotatably attached to an inner end bifurcated portion 36 a of the case 36 by a central shaft 37. The rotating plate 38 has one end fixed by press-fitting and the other end extending above the float 3 and rotating by the float 3 descending to rotate the rotating plate 38, and one end bifurcated portion 40a is a connecting shaft 41. The movable shaft 40 connected to the rotary plate 38 and displaced in the axial direction as the rotary plate 38 rotates, the permanent magnet 42 built in the other end of the movable shaft 40, and the partition 35 b of the case 35, the permanent magnet 42. And a magnetic switch 43 that is operated by the magnetic field of the permanent magnet 42.

図２は、密閉容器内の液位が低くフロート３が底部に位置する状態を示している。フロート弁４は閉弁して密閉容器内と圧送口９を遮断し、給気弁体１９が給気口６を閉口すると共に排気弁体１６が排気口７を開口している。密閉容器内の作動蒸気が排気口７から排気管２３を通して蒸気循環側に排気されると共に熱交換器２５で発生した液体が流入管２１から流入側逆止弁２０を介して流入口８から密閉容器内に流入される。密閉容器内の液位上昇に伴ってフロート３が上昇してフロート弁４が開弁する。フロート３が浮上して密着コイルバネ３９に当接後は密着コイルバネ３９を介して回転板３８が中心軸３７の回りに反時計方向に回転し、回転板３８の回転に伴って可動軸４０が左方に変位して永久磁石４２が磁気スイッチ４３に近づき第２所定高位で磁気スイッチ４３がＯＮする。フロート３が所定高位に達すると、スナップ機構部５がスナップ移動して給気弁体１９が給気口６を開口すると共に排気弁体１６が排気口７を閉口し、給気口６から密閉容器内に供給される作動蒸気によって、密閉容器内の液体が圧送口９から圧送側逆止弁２２を介してボイラー２９へ圧送される。液体の圧送による密閉容器内の液位低下に伴ってフロート３が降下すると、密着コイルバネ３９及び回転板３８が中心軸３７の回りに時計方向に回転し、回転板３８の回転に伴って可動軸４０が右方に変位して永久磁石４２が磁気スイッチ４３から遠ざかりフロート３が第２所定高位よりも低下したときに磁気スイッチ４３がＯＦＦする。その後、フロート３が所定低位に達すると、フロート弁４が閉弁し、スナップ機構部５が反対側にスナップ移動して給気弁体１９が給気口６を閉口すると共に排気弁体１６が排気口７を開口する。このような作動サイクルを繰り返す。フロート位置検出スイッチ３３のＯＮ・ＯＦＦを計数することにより液体圧送装置２４の作動を検出する。 FIG. 2 shows a state where the liquid level in the sealed container is low and the float 3 is located at the bottom. The float valve 4 is closed to shut off the inside of the sealed container and the pressure feed port 9, the air supply valve body 19 closes the air supply port 6, and the exhaust valve body 16 opens the exhaust port 7. The working steam in the sealed container is exhausted from the exhaust port 7 to the steam circulation side through the exhaust pipe 23, and the liquid generated in the heat exchanger 25 is sealed from the inlet 8 through the inlet pipe 21 through the inlet check valve 20. It flows into the container. As the liquid level in the sealed container rises, the float 3 rises and the float valve 4 opens. After the float 3 floats and comes into contact with the contact coil spring 39, the rotating plate 38 rotates counterclockwise around the central axis 37 via the contact coil spring 39, and the movable shaft 40 moves to the left along with the rotation of the rotating plate 38. The permanent magnet 42 approaches the magnetic switch 43 and the magnetic switch 43 is turned on at the second predetermined high position. When the float 3 reaches a predetermined high position, the snap mechanism portion 5 snaps and the air supply valve body 19 opens the air supply port 6 and the exhaust valve body 16 closes the exhaust port 7 and is sealed from the air supply port 6. The liquid in the sealed container is pumped from the pumping port 9 to the boiler 29 via the pumping side check valve 22 by the working steam supplied into the container. When the float 3 descends as the liquid level in the sealed container is lowered by the liquid pumping, the contact coil spring 39 and the rotating plate 38 rotate clockwise around the central axis 37, and the movable shaft moves along with the rotation of the rotating plate 38. When 40 is displaced to the right and the permanent magnet 42 is moved away from the magnetic switch 43 and the float 3 is lowered below the second predetermined high level, the magnetic switch 43 is turned OFF. Thereafter, when the float 3 reaches a predetermined low level, the float valve 4 is closed, the snap mechanism portion 5 snaps to the opposite side, the air supply valve body 19 closes the air supply port 6 and the exhaust valve body 16 The exhaust port 7 is opened. Such an operation cycle is repeated. The operation of the liquid pumping device 24 is detected by counting ON / OFF of the float position detection switch 33.

本発明は、各種蒸気使用装置で発生した液体を作動気体により液体圧送先に圧送する液体圧送装置のモニタリングシステムに利用することができる。   INDUSTRIAL APPLICATION This invention can be utilized for the monitoring system of the liquid pumping apparatus which pumps the liquid which generate | occur | produced with various vapor | steam using apparatuses to a liquid pumping destination by working gas.

１ 本体
２ 蓋
６ 給気口
７ 排気口
８ 流入口
９ 圧送口
２４ 液体圧送装置
３３ フロート位置検出スイッチ DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 6 Air supply port 7 Exhaust port 8 Inflow port 9 Pumping port 24 Liquid pumping device 33 Float position detection switch

Claims (1)

密閉容器に作動気体の給気口と排気口及び圧送液体の流入口と圧送口が設けられ、密閉容器内にフロートが配置され、フロートが所定高位に達すると給気口が開口されると共に排気口が閉口されて給気口から密閉容器内に作動気体が供給されることにより密閉容器内の液体が圧送口から圧送され、フロートが所定低位に達すると給気口が閉口されると共に排気口が開口されてフロートが所定高位に達するまで密閉容器内の作動気体が排気口から排気されると共に液体が流入口から密閉容器内に流入される液体圧送装置において、液体圧送装置の作動を検出するためにフロートの位置を検出するフロート位置検出スイッチを密閉容器に取り付け、フロート位置検出スイッチが密閉容器に固定されたケースと、ケースの中心軸の回り回転自在に取付けられた回転板と、回転板に一端が固定され他端がフロートの上方に延びてフロートの浮上降下により回転して回転板を回転せしめる密着コイルバネと、回転板に連結され回転板の回転に伴って軸心方向に変位する可動軸と、可動軸に内蔵された永久磁石と、永久磁石の磁界により動作する磁気スイッチとから構成され、フロートが所定高位よりも少し低位の第２所定高位まで浮上したときに磁気スイッチがＯＮしフロートが第２所定高位よりも降下したときに磁気スイッチがＯＦＦすることを特徴とする液体圧送装置のモニタリングシステム。 The closed container is provided with an inlet and outlet for working gas and an inlet and outlet for pressurized liquid. A float is placed in the sealed container. When the float reaches a predetermined level, the inlet is opened and exhausted. When the opening is closed and the working gas is supplied into the sealed container from the air supply port, the liquid in the sealed container is pumped from the pressure feed port, and when the float reaches a predetermined low level, the air supply port is closed and the exhaust port is closed. The operation of the liquid pumping device is detected in the liquid pumping device in which the working gas in the sealed container is exhausted from the exhaust port and the liquid flows into the sealed container from the inflow port until the float reaches a predetermined high level. For this purpose, a float position detection switch for detecting the position of the float is attached to the sealed container, and the float position detection switch is fixed to the sealed container, and is rotatable around the center axis of the case. A rotating plate that is connected to the rotating plate and connected to the rotating plate to rotate the rotating plate. Accordingly, the movable shaft is displaced in the axial direction, a permanent magnet built in the movable shaft, and a magnetic switch that operates by the magnetic field of the permanent magnet, and the float is slightly lower than the predetermined high level up to a second predetermined high level. A monitoring system for a liquid pressure feeding device, wherein the magnetic switch is turned on when the surface is floated and the magnetic switch is turned off when the float is lowered below a second predetermined high level.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017010272A1 (en) * 2015-07-10 2017-01-19 株式会社テイエルブイ Position detection sensor
WO2020208920A1 (en) 2019-04-12 2020-10-15 株式会社テイエルブイ Position detection sensor
US20220003531A1 (en) * 2019-04-12 2022-01-06 Tlv Co., Ltd. Position detection sensor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017010272A1 (en) * 2015-07-10 2017-01-19 株式会社テイエルブイ Position detection sensor
JPWO2017010272A1 (en) * 2015-07-10 2018-02-01 株式会社テイエルブイ Position detection sensor
WO2020208920A1 (en) 2019-04-12 2020-10-15 株式会社テイエルブイ Position detection sensor
US20220003531A1 (en) * 2019-04-12 2022-01-06 Tlv Co., Ltd. Position detection sensor
EP3933248A4 (en) * 2019-04-12 2022-04-27 TLV Co., Ltd. Position detection sensor
US11713958B2 (en) 2019-04-12 2023-08-01 Tlv Co., Ltd. Position detection sensor

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