JP5722148B2 - Liquid pumping device monitoring system - Google Patents

Liquid pumping device monitoring system Download PDF

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JP5722148B2
JP5722148B2 JP2011157347A JP2011157347A JP5722148B2 JP 5722148 B2 JP5722148 B2 JP 5722148B2 JP 2011157347 A JP2011157347 A JP 2011157347A JP 2011157347 A JP2011157347 A JP 2011157347A JP 5722148 B2 JP5722148 B2 JP 5722148B2
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liquid
turned
float
sealed container
pumping device
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JP2013024275A (en
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湯本 秀昭
秀昭 湯本
悠一 杉江
悠一 杉江
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Tlv Co Ltd
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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、液体圧送装置の温度や圧力あるいは液位レベルを検出して液体圧送装置の作動を検出する作動検出器を具備したものである。 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. At the same time, the operating 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. And an operation detector for detecting the operation of the liquid pumping device by detecting the pressure or the liquid level.

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は、液体圧送装置に流入する液体の流入流量が少ない場合、フロートが所定低位に達したときから次に所定高位に達するときまでの時間が長くなるが、作動検出器の電源を常時ONしたものであるので、消費電力が大きいという問題点があった。 The conventional monitoring system for a liquid pumping device operates when the flow rate of the liquid flowing into the liquid pumping device is small, but the time from when the float reaches a predetermined low level to the next high level is increased. Since the power supply of the detector is always on, there is a problem that power consumption is large.

したがって本発明が解決しようとする課題は、消費電力を小さく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 reduce power consumption.

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、液体圧送装置の温度や圧力あるいは液位レベルを検出したり液体圧送装置の作動に伴う振動や音あるいは超音波を検出したりする作動検出器と、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ONしフロートが第2所定高位よりも降下したときにOFFするスイッチを具備し、スイッチのONにより作動検出器の電源をONしスイッチのON後の所定時間後にあるいはスイッチのOFF後の第2所定時間後に作動検出器の電源を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 a liquid pumping device that flows into a closed container, the temperature, pressure, or liquid level of the liquid pumping device is detected, and vibrations, sounds, or ultrasonic waves that accompany the operation of the liquid pumping device are detected. A detector and a switch that turns on when the float rises to a second predetermined high level slightly lower than the predetermined high level and turns off when the float falls below the second predetermined high level, and is activated when the switch is turned on The power of the operation detector is turned off after a predetermined time after the switch is turned on or after a second predetermined time after the switch is turned off.

本発明によれば、液体圧送装置の温度や圧力あるいは液位レベルを検出したり液体圧送装置の作動に伴う振動や音あるいは超音波を検出したりする作動検出器と、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ONしフロートが第2所定高位よりも降下したときにOFFするスイッチを具備し、スイッチのONにより作動検出器の電源をONしスイッチのON後の所定時間後にあるいはスイッチのOFF後の第2所定時間後に作動検出器の電源をOFFすることにより、液体圧送装置のモニタリングシステムの消費電力を小さくできるという効果を奏する。 According to the present invention, the operation detector that detects the temperature, pressure, or liquid level of the liquid pumping device or detects vibration, sound, or ultrasonic waves that accompanies the operation of the liquid pumping device, and the float is higher than a predetermined high level. It has a switch that turns on when the float rises to the second predetermined high level, which is slightly lower, and turns off when the float falls below the second predetermined high level. By turning off the power source of the operation detector after the predetermined time or after the second predetermined time after the switch is turned off, there is an effect that the power consumption of the monitoring system of the liquid pumping device can be reduced.

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の液体圧送装置のスイッチの拡大断面図である。It is an expanded sectional view of the switch of the liquid pumping apparatus of FIG. 図1の液体圧送装置の作動検出器の拡大断面図である。It is an expanded sectional view of the action | operation detector 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4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 4. 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とスイッチ33及び作動検出器34とで液体圧送装置のモニタリングシステムを構成する。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。作動検出器34は液体圧送装置24の作動に伴う振動や音あるいは超音波を検出するものであり、本実施の形態の振動計は図4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44と、ケース44内にケース44の軸方向に摺動自在に配置した検出針45と、検出針45にねじ結合した振動伝達板46と検出針45に挿入した電極板47、圧電素子48、電極板49、ウエイト50、防振ゴム51と検出針45に固定したナット52とから成る感振素子53と、防振ゴム51とケース44の上壁の間に配置され検出針45の先端を本体1に付勢するコイルスプリング53と、検出針45の先端に取付けた温度センサ54とから構成する。 The liquid pumping device 24, the switch 33, and the operation detector 34 constitute a monitoring system for the liquid pumping device. As shown in FIG. 3, the switch 33 includes a case 36 fixed to the main body 1 by screw connection, a rotating plate 38 rotatably attached to an inner end bifurcated portion 36a of the case 36 by a central shaft 37, a rotating plate 38, one end is fixed by press-fitting, and the other end extends above the float 3 and rotates when the float 3 rises and lowers to rotate the rotating plate 38, and the one end bifurcated portion 40a is connected to the rotating plate by the connecting shaft 41. 38 is separated from the permanent magnet 42 by the partition wall 35b of the case 35, the movable shaft 40 connected to the shaft 38 and displaced in the axial direction along with the rotation of the rotating plate 38, the permanent magnet 42 built in the other end of the movable shaft 40, and the partition 35b. The magnetic switch 43 is operated by the magnetic field of the permanent magnet 42. The operation detector 34 detects vibration, sound, or ultrasonic waves associated with the operation of the liquid pumping device 24, and the vibrometer of the present embodiment is fixed to the main body 1 by screw connection as shown in FIG. A case 44; a detection needle 45 slidably disposed in the case 44 in the axial direction of the case 44; a vibration transmission plate 46 screwed to the detection needle 45; an electrode plate 47 inserted into the detection needle 45; and a piezoelectric element 48. , An electrode plate 49, a weight 50, a vibration isolating element 53 comprising a vibration isolating rubber 51 and a nut 52 fixed to the detection needle 45, and a tip of the detection needle 45 disposed between the vibration isolating rubber 51 and the upper wall of the case 44. Is constituted by a coil spring 53 for biasing the main body 1 and a temperature sensor 54 attached to the tip of the detection needle 45.

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し、磁気スイッチ43のONにより作動検出器34の電源がONする。作動検出器34が液体圧送装置24の作動に伴う振動を検出する。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。磁気スイッチ43のON後の所定時間後にあるいは磁気スイッチ43のOFF後の所定時間後に作動検出器34の電源を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。 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 magnetic switch 43 is turned on at a second predetermined high level as the permanent magnet 42 approaches the magnetic switch 43, and the power source of the operation detector 34 is turned on when the magnetic switch 43 is turned on. The operation detector 34 detects the vibration accompanying the operation of the liquid pumping device 24. 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. The power of the operation detector 34 is turned off after a predetermined time after the magnetic switch 43 is turned on or after a predetermined time after 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.

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 スイッチ
34 作動検出器
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 Switch 34 Operation detector

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、液体圧送装置の温度や圧力あるいは液位レベルを検出したり液体圧送装置の作動に伴う振動や音あるいは超音波を検出したりする作動検出器と、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ONしフロートが第2所定高位よりも降下したときにOFFするスイッチを具備し、スイッチのONにより作動検出器の電源をONしスイッチのON後の所定時間後にあるいはスイッチのOFF後の第2所定時間後に作動検出器の電源を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. 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, the temperature or pressure of the liquid pumping device or An operation detector that detects the liquid level and detects vibration, sound, or ultrasonic waves associated with the operation of the liquid pumping device, and the float ascends to a second predetermined high level that is slightly lower than the predetermined high level. A switch that is turned on and turned off when the float falls below a second predetermined high level is turned on. When the switch is turned on, the power source of the operation detector is turned on, and after a predetermined time after the switch is turned on or after the switch is turned off, the second predetermined A monitoring system for a liquid pumping device, wherein the power source of the operation detector is turned off after a time.
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