JP2013204876A

JP2013204876A - Condensate recovery device

Info

Publication number: JP2013204876A
Application number: JP2012072733A
Authority: JP
Inventors: Hiroyuki Iwashita; 裕幸岩下
Original assignee: TLV Co Ltd
Current assignee: TLV Co Ltd
Priority date: 2012-03-28
Filing date: 2012-03-28
Publication date: 2013-10-07
Anticipated expiration: 2032-03-28
Also published as: JP5940338B2

Abstract

PROBLEM TO BE SOLVED: To provide a condensate recovery device capable of positively discharging condensate to the outside even if the pressure of steam used in a steam using apparatus becomes low.SOLUTION: An inflow port 3 and a reduction port 4 of condensate, and an inlet 5 and a circulation port 6 of a high pressure operation fluid are provided in a condensate recovery device 2. A condensate inflow pipe 8 is connected to the condensate inflow port 3 via an opening and closing valve 7. The opening and closing valve 7 is automatically closed by opening the high pressure operation fluid inlet 5 to an upper piston 9 and supplying the high pressure operation fluid through a conduit 10. Even if the pressure of steam of an interior of the steam using apparatus becomes low, the condensate can be positively sent into the interior of the condensate recovery device 2 without causing a pressure loss as in a conventional technology of arranging a check valve.

Description

本発明は、蒸気使用機器で発生した蒸気の凝縮水としての復水を、ボイラーや給水タンク等の所定の復水回収先へ回収する復水回収装置に関する。 The present invention relates to a condensate recovery apparatus that recovers condensate as condensate of steam generated in a steam-using device to a predetermined condensate recovery destination such as a boiler or a water supply tank.

従来の復水回収装置は、蒸気使用機器の復水出口側を蒸気トラップと復水集合タンクと逆止弁を介して復水圧送部材に接続し、この復水圧送部材の高圧操作流体排出口に圧力制御弁を取り付けたもので、熱エネルギー損失を少なくすることができるものである。 In the conventional condensate recovery device, the condensate outlet side of the steam-using device is connected to the condensate pumping member via the steam trap, the condensate collecting tank, and the check valve, and the high-pressure operation fluid discharge port of the condensate pumping member A pressure control valve is attached to the tube, and heat energy loss can be reduced.

この復水回収装置においては、蒸気使用機器で使用される蒸気圧力が低くなると、蒸気使用機器で発生した復水を確実に排出することができなくなる問題があった。これは、復水圧送部材の高圧操作流体排出口に取り付けた圧力制御弁によって、復水圧送部材の内部を大気圧以下の真空状態とすることができず、蒸気使用機器で使用される蒸気圧力が極端に低くなると、蒸気使用機器の復水を逆止弁を介して復水回収装置の内部へ流入させることができなくなるのである。 In this condensate recovery apparatus, there is a problem that if the steam pressure used in the steam-using device is low, the condensate generated in the steam-using device cannot be discharged reliably. This is because the pressure control valve attached to the high-pressure operating fluid discharge port of the condensate pumping member cannot bring the inside of the condensate pumping member into a vacuum state below atmospheric pressure, and the steam pressure used in steam-using equipment If the temperature becomes extremely low, the condensate of the steam-using device cannot be allowed to flow into the condensate recovery device via the check valve.

特開２００８−１７０１２６号公報JP 2008-170126 A

解決しようとする課題は、逆止弁を配置する必要をなくして、蒸気使用機器で使用される蒸気圧力が極端に低くなっても復水を確実に復水回収装置の内部へ流入させることのできる復水回収装置を提供すること。 The problem to be solved is that there is no need to install a check valve and that the condensate can flow into the condensate recovery device even if the steam pressure used in the steam-using equipment becomes extremely low. To provide a condensate recovery device.

本発明は、復水の流入口と還元口を設けた復水溜容器と、該復水溜容器に高圧操作流体の導入口と循環口を形成すると共に、水位と共に浮上降下するフロ―ト手段を配置して、該フロ―ト手段の移動に応じて上記高圧操作流体の導入口と循環口とを開閉して復水を圧送し回収するものにおいて、復水の流入口に逆止弁を配置することなく、高圧操作流体の導入口が開口すると、その高圧操作流体の流体圧力によって閉弁する開閉弁を復水の流入口に配置したものである。 The present invention provides a condensate reservoir provided with a condensate inlet and a reducing port, and a float means that rises and falls with the water level while forming an inlet and a circulation port for a high-pressure operating fluid in the condensate reservoir. A check valve is disposed at the inlet of the condensate in which the condensate is pumped and recovered by opening and closing the inlet and the circulation port of the high-pressure operating fluid according to the movement of the float means. Instead, an open / close valve that is closed by the fluid pressure of the high-pressure operating fluid when the high-pressure operating fluid inlet is opened is disposed at the condensate inlet.

本発明の復水回収装置は、高圧操作流体の導入口が開口すると、その高圧操作流体の流体圧力によって閉弁する開閉弁を復水の流入口に配置したことによって、蒸気使用機器の内部の蒸気圧力が低下しても、逆止弁を配置した場合の圧力損失を発生することがなく、復水を確実に復水回収装置の内部へ流入させることができる。 The condensate recovery device of the present invention has an open / close valve that is closed by the fluid pressure of the high-pressure operating fluid when the inlet of the high-pressure operating fluid is opened. Even if the steam pressure is reduced, no pressure loss occurs when the check valve is arranged, and the condensate can be surely flowed into the condensate recovery apparatus.

本発明の復水回収装置の実施例を示す構成図。The block diagram which shows the Example of the condensate collection | recovery apparatus of this invention.

本発明の復水回収装置は、高圧操作流体の流体圧力によって閉弁する開閉弁を使用するものであるが、この開閉弁としては従来公知の高圧流体をアクチュエータ源とするピストン弁とかダイヤフラム弁等を用いることができる。 The condensate recovery apparatus of the present invention uses an on-off valve that closes by the fluid pressure of the high-pressure operating fluid. As this on-off valve, a piston valve or a diaphragm valve that uses a conventionally known high-pressure fluid as an actuator source, or the like Can be used.

図１は本実施例の構成図であって、復水回収装置２を、復水の流入口３と還元口４、及び、高圧操作流体の導入口５と循環口６とで構成し、復水流入口３に開閉弁７を介して復水流入管８を接続する。 FIG. 1 is a block diagram of the present embodiment. A condensate recovery device 2 is composed of a condensate inlet 3 and a reducing port 4, and a high-pressure operating fluid inlet 5 and a circulation port 6. A condensate inflow pipe 8 is connected to the water inlet 3 through an on-off valve 7.

開閉弁７はピストン弁であり、上部のピストン９へ高圧操作流体の導入口５が開口すると管路１０を通して高圧操作流体、本実施例においては高圧の圧縮空気、が供給されることによって、自動的に閉弁し、一方、導入口５から高圧操作流体の供給が停止されると自動的に開弁するものである。 The on-off valve 7 is a piston valve. When the high-pressure operating fluid inlet 5 is opened to the upper piston 9, the high-pressure operating fluid, in this embodiment high-pressure compressed air, is automatically supplied through the pipe 10. On the other hand, the valve is automatically opened when the supply of the high-pressure operating fluid from the inlet 5 is stopped.

復水の還元口４に逆止弁１１を介して復水圧送管１２を接続する。逆止弁１１は、復水回収装置２内から復水圧送管１２側への復水の流下を許容し、反対方向の流れは阻止する機能を有する。 A condensate pressure feed pipe 12 is connected to the condensate reduction port 4 via a check valve 11. The check valve 11 has a function of allowing the flow of condensate from the condensate recovery device 2 to the condensate pressure feed pipe 12 side and blocking the flow in the opposite direction.

高圧操作流体の導入口５へ高圧の圧縮空気供給管１３を接続する。また、高圧操作流体の循環口６は、管路１４を介してエアエゼクタ１５の吸引部１６と接続する。吸引部１６に内蔵した図示しないノズルにエア供給管１７を接続する。エア供給管１７には、第二の開閉弁１８を取り付けて、その上部のピストン１９に管路２０を介して高圧操作流体の導入口５近傍と連通する。開閉弁１８は、ピストン１９へ高圧操作流体の導入口５が開口すると管路２０を通して高圧操作流体が供給されることによって、自動的に閉弁し、一方、導入口５から高圧操作流体の供給が停止されると自動的に開弁するものである。 A high-pressure compressed air supply pipe 13 is connected to the high-pressure operating fluid inlet 5. In addition, the high-pressure operating fluid circulation port 6 is connected to the suction portion 16 of the air ejector 15 via the conduit 14. An air supply pipe 17 is connected to a nozzle (not shown) built in the suction unit 16. A second on-off valve 18 is attached to the air supply pipe 17, and communicates with the piston 19 at the upper part thereof through the pipe line 20 and the vicinity of the high-pressure operating fluid inlet 5. The on-off valve 18 is automatically closed by supplying the high-pressure operating fluid through the pipe line 20 when the high-pressure operating fluid introduction port 5 opens to the piston 19, while the high-pressure operating fluid is supplied from the introduction port 5. The valve opens automatically when is stopped.

復水回収装置２は、内部に配置した図示しないフロートが下方部に位置する場合に、高圧操作流体の導入口５を閉口して開閉弁７，１８を開弁し、一方、高圧操作流体の循環口６を開口してエアエゼクタ１５の吸引部１６と連通して、復水流入管８から復水を復水回収装置２内に流下させる。 The condensate recovery device 2 closes the high-pressure operating fluid introduction port 5 and opens the on-off valves 7 and 18 when a float (not shown) disposed therein is located in the lower part, while the high-pressure operating fluid The circulation port 6 is opened to communicate with the suction part 16 of the air ejector 15, and the condensate flows down from the condensate inflow pipe 8 into the condensate recovery device 2.

復水回収装置２内に復水が溜まって図示しないフロートが所定上方部に位置すると、高圧操作流体の循環口６を閉口し、一方、高圧操作流体の導入口５を開口して開閉弁７，１８を閉弁し、高圧の圧縮空気供給管１３から圧送用圧縮空気を内部に流入させることにより、内部に溜まった復水を復水の還元口４と逆止弁１１と復水圧送管１２を通してボイラー等の復水回収先へ圧送する。 When condensate accumulates in the condensate recovery device 2 and a float (not shown) is positioned at a predetermined upper portion, the high-pressure operating fluid circulation port 6 is closed, while the high-pressure operating fluid introduction port 5 is opened to open and close the valve 7. , 18 are closed, and compressed air for pressure feeding is caused to flow into the inside from the high-pressure compressed air supply pipe 13, so that the condensate accumulated therein is reduced to the condensate reduction port 4, the check valve 11, and the condensate pressure feeding pipe. 12 is pumped to a condensate collection destination such as a boiler.

復水が圧送されて復水回収装置２内の液位が低下すると、再度、高圧操作流体の導入口５を閉口し、高圧操作流体の循環口６を開口することによって、復水の流入口３から復水を内部へ流下させる。このような作動サイクルを繰り返すことによって復水を所定の回収先へ回収する。 When the condensate is pumped and the liquid level in the condensate recovery device 2 is lowered, the inlet 5 for the high-pressure operating fluid is closed again, and the circulation port 6 for the high-pressure operating fluid is opened again. The condensate flows down from 3. By repeating such an operation cycle, the condensate is recovered to a predetermined recovery destination.

高圧操作流体の導入口５が開口すると、その高圧操作流体の流体圧力によって閉弁する開閉弁７，１８を配置したことによって、蒸気使用機器の内部の蒸気圧力が低下しても、従来技術のように逆止弁を配置した場合の圧力損失を発生することがなく、復水を確実に復水回収装置２の内部へ流入させることができる。 When the high-pressure operating fluid inlet 5 is opened, the on-off valves 7 and 18 that are closed by the fluid pressure of the high-pressure operating fluid are arranged. Thus, no pressure loss occurs when the check valve is arranged, and the condensate can be surely flowed into the condensate recovery apparatus 2.

本発明は、蒸気使用機器で使用される蒸気の圧力が低い場合であっても、確実に復水を回収することのできる復水回収装置として利用することができる。 INDUSTRIAL APPLICABILITY The present invention can be used as a condensate recovery apparatus that can reliably recover condensate even when the pressure of steam used in steam-using equipment is low.

２復水回収装置
３復水の流入口
４復水の還元口
５高圧操作流体の導入口
６高圧操作流体の循環口
７開閉弁
８復水流入管
１２復水圧送管
１３高圧の圧縮空気供給管
１５エアエゼクタ
１８第二の開閉弁 2 Condensate recovery device 3 Condensate inlet 4 Condensate reduction port 5 High-pressure operating fluid inlet 6 High-pressure operating fluid circulation port 7 Open / close valve 8 Condensate inflow pipe 12 Condensate pressure feed pipe 13 High-pressure compressed air supply pipe 15 Air ejector 18 Second on-off valve

Claims

復水の流入口と還元口を設けた復水溜容器と、該復水溜容器に高圧操作流体の導入口と循環口を形成すると共に、水位と共に浮上降下するフロ―ト手段を配置して、該フロ―ト手段の移動に応じて上記高圧操作流体の導入口と循環口とを開閉して復水を圧送し回収するものにおいて、復水の流入口に逆止弁を配置することなく、高圧操作流体の導入口が開口すると、その高圧操作流体の流体圧力によって閉弁する開閉弁を復水の流入口に配置したことを特徴とする復水回収装置。 A condensate reservoir provided with a condensate inlet and a reducing port, and a float means that floats and descends along with the water level while forming an inlet and a circulation port for the high-pressure operating fluid in the condensate reservoir, When the condensate is pumped and collected by opening and closing the inlet and circulation port of the high-pressure operating fluid according to the movement of the float means, a high pressure is not provided at the inlet of the condensate. A condensate recovery apparatus characterized in that an open / close valve that closes by the fluid pressure of the high-pressure operation fluid is disposed at the condensate inlet when the operation fluid introduction port opens.