JP2007303629A - Pilot type steam trap - Google Patents

Pilot type steam trap Download PDF

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Publication number
JP2007303629A
JP2007303629A JP2006134986A JP2006134986A JP2007303629A JP 2007303629 A JP2007303629 A JP 2007303629A JP 2006134986 A JP2006134986 A JP 2006134986A JP 2006134986 A JP2006134986 A JP 2006134986A JP 2007303629 A JP2007303629 A JP 2007303629A
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Japan
Prior art keywords
orifice
pressure
pressure chamber
valve
pilot
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Pending
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JP2006134986A
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Japanese (ja)
Inventor
Satoyuki Fujita
智行 藤田
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TLV Co Ltd
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TLV Co Ltd
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Priority to JP2006134986A priority Critical patent/JP2007303629A/en
Publication of JP2007303629A publication Critical patent/JP2007303629A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pilot type steam trap capable of quickly opening a pressure response valve at low temperatures. <P>SOLUTION: This pilot type steam trap has a pressure chamber 11 formed partially by a piston 10, a first orifice 20 for making the pressure chamber 11 communicate with an inlet 4 side, a second orifice 15 for making the pressure chamber 11 communicate with an outlet 5 side, and a pilot float valve 19 driving the piston 10 by controlling pressure by introducing a condensate into the pressure chamber 11 by opening and closing the first orifice 20 in response to a liquid level on the inlet 4 side. Bimetal 22 is arranged for closing the second orifice 15 at the low temperature and opening the second orifice at the high temperature. The pilot float valve 19 opens the first orifice 20, and when the low temperature condensate is introduced into the pressure chamber 11, since the second orifice 15 is closed by the bimetal 22, pressure of the pressure chamber 11 quickly increases, and the piston 10 lifts a float 8, and quickly opens a main valve port 6, and discharges the condensate to an outlet 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は蒸気配管系に発生する復水を排出するスチームトラップに関し、特に、入口側の液位をパイロットフロート弁で検出して圧力応動弁を駆動するパイロット式スチームトラップに関する。   The present invention relates to a steam trap that discharges condensate generated in a steam piping system, and more particularly to a pilot-type steam trap that drives a pressure responsive valve by detecting the liquid level on the inlet side with a pilot float valve.

この種のパイロット式スチームトラップは、圧力応動弁の受圧変位壁で一部を形成された圧力室と、圧力室を入口側に連通する第１オリフィスと、圧力室を出口側に連通する第２オリフィスと、第１オリフィスを入口側の液位に応じて開閉し圧力室内に復水を導入して圧力を制御して圧力応動弁を駆動するパイロットフロート弁とを備えたものである。この場合、始動時の低温復水を素早く排出できない問題点があった。これは、パイロットフロート弁が開弁して低温復水を圧力室内に導入しても、始動時は蒸気系の圧力が低いので、圧力応動弁を開弁できないためである。   This type of pilot steam trap has a pressure chamber partially formed by a pressure receiving displacement wall of a pressure responsive valve, a first orifice that communicates the pressure chamber with the inlet side, and a second chamber that communicates the pressure chamber with the outlet side. An orifice and a pilot float valve that opens and closes the first orifice according to the liquid level on the inlet side, introduces condensate into the pressure chamber, controls the pressure, and drives the pressure responsive valve. In this case, there was a problem that the low-temperature condensate at the start could not be discharged quickly. This is because even if the pilot float valve is opened and the low-temperature condensate is introduced into the pressure chamber, the pressure responsive valve cannot be opened because the steam system pressure is low at the start.

そこで、従来は実公平６−３７２７２号公報に示される解決策が用いられていた。これは、低温時に圧力応動弁を強制的に直接開弁せしめる温度応動部材を配置したものである。しかしながら、この従来のものにおいては、大きな力を発揮できる温度応動部材を用いなければ、低温時に圧力応動弁を開弁できない問題点があった。
実公平６−３７２７２号公報 Therefore, conventionally, the solution disclosed in Japanese Utility Model Publication No. 6-37272 has been used. This is one in which a temperature responsive member that forcibly opens the pressure responsive valve at low temperatures is arranged. However, this conventional one has a problem that the pressure responsive valve cannot be opened at a low temperature unless a temperature responsive member capable of exerting a large force is used.
Japanese Utility Model Publication No. 6-37272

従って、本発明の技術的課題は、小さな力の温度応動部材を用いて低温時に素早く圧力応動弁を開弁できるパイロット式スチームトラップを提供することである。   Therefore, the technical problem of the present invention is to provide a pilot-type steam trap that can quickly open a pressure responsive valve at a low temperature using a temperature responsive member with a small force.

上記の技術的課題を解決するために講じた本発明の技術的手段は、圧力応動弁の受圧変位壁で一部を形成された圧力室と、圧力室を入口側に連通する第１オリフィスと、圧力室を出口側に連通する第２オリフィスと、第１オリフィスを入口側の液位に応じて開閉し圧力室内に復水を導入して圧力を制御して圧力応動弁を駆動するパイロットフロート弁とを備えたものにおいて、第２オリフィスを低温時に閉じ高温時に開く温度応動部材を配置したものである。   The technical means of the present invention taken to solve the above technical problem includes a pressure chamber partially formed by a pressure receiving displacement wall of a pressure responsive valve, a first orifice communicating the pressure chamber with an inlet side, and A second orifice that communicates the pressure chamber to the outlet side, and a pilot float that opens and closes the first orifice according to the liquid level on the inlet side, introduces condensate into the pressure chamber, and controls the pressure to drive the pressure responsive valve In the apparatus equipped with a valve, a temperature responsive member that closes the second orifice at a low temperature and opens it at a high temperature is arranged.

本発明は、第２オリフィスを低温時に閉じ高温時に開く温度応動部材により低温時に圧力応動弁を開弁せしめるものであるので、小さな力の温度応動部材を用いて低温時に素早く圧力応動弁を開弁できるという優れた効果を生じる。   In the present invention, the pressure responsive valve is opened at a low temperature by a temperature responsive member that closes the second orifice at a low temperature and opens at a high temperature. Therefore, the pressure responsive valve is quickly opened at a low temperature by using a temperature responsive member with a small force. This produces an excellent effect of being able to.

本発明は、第２オリフィスを低温時に閉じ高温時に開く温度応動部材を配置したものである。そのため、パイロットフロート弁が開弁して低温復水を圧力室内に導入すると、第２オリフィスが温度応動部材により閉じられているので、圧力室の圧力が素早く上昇して圧力応動弁が素早く開弁する。温度応動部材は第２オリフィスを開閉するものであるので、小さな力のものを用いることができる。   In the present invention, a temperature responsive member that closes the second orifice at a low temperature and opens it at a high temperature is arranged. Therefore, when the pilot float valve is opened and the low temperature condensate is introduced into the pressure chamber, the second orifice is closed by the temperature responsive member, so the pressure in the pressure chamber rises quickly and the pressure responsive valve opens quickly. To do. Since the temperature responsive member opens and closes the second orifice, a member having a small force can be used.

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と図２参照）。
本体１に蓋部材２を締結して内部に弁室３を有するトラップケーシングを形成する。トラップケーシングの上部に入口４と出口５を同一軸上に形成する。弁室３と出口５を連通する主弁口６を開けた弁座７を弁室３の下部側方に取付ける。弁室３内に主弁口６を開閉する中空球形のフロート８を自由状態で収容する。フロート８は圧力応動弁の一部を構成する。 An embodiment showing a specific example of the above technical means will be described (see FIGS. 1 and 2).
A lid casing 2 is fastened to the main body 1 to form a trap casing having a valve chamber 3 therein. An inlet 4 and an outlet 5 are formed on the same axis at the top of the trap casing. A valve seat 7 having a main valve port 6 communicating with the valve chamber 3 and the outlet 5 is attached to the lower side of the valve chamber 3. A hollow spherical float 8 that opens and closes the main valve port 6 is accommodated in the valve chamber 3 in a free state. The float 8 constitutes a part of the pressure responsive valve.

弁室３の底壁で隔てて底蓋９との間に圧力応動弁の受圧変位壁としてのピストン１０を収容するピストン収容室を形成する。ピストン１０は圧力応動弁の一部を構成する。ピストン収容室はピストン１０で気密的に仕切られ、一方が圧力室１１を形成し、他方が出口側室１２を形成する。ピストン１０の上面に連結棒１３を取付ける。連結棒１３は圧力応動弁の一部を構成し、先端は弁室３の底壁を気密的に貫通して弁室３内に延び、受け板１４を介してフロート８に当接する。受け板１４は圧力応動弁の一部を構成する。圧力室１１と出口側室１２はピストン１０に開けた第２オリフィス１５を介して連結し、出口側室１２は出口側通路１６を介して出口５に連結する。   A piston accommodating chamber for accommodating the piston 10 as a pressure receiving displacement wall of the pressure responsive valve is formed between the valve chamber 3 and the bottom lid 9 separated by the bottom wall of the valve chamber 3. The piston 10 constitutes a part of a pressure responsive valve. The piston housing chamber is hermetically partitioned by the piston 10, one forming the pressure chamber 11 and the other forming the outlet side chamber 12. A connecting rod 13 is attached to the upper surface of the piston 10. The connecting rod 13 constitutes a part of the pressure responsive valve, and its tip penetrates the bottom wall of the valve chamber 3 in an airtight manner, extends into the valve chamber 3, and abuts on the float 8 via the receiving plate 14. The receiving plate 14 constitutes a part of the pressure responsive valve. The pressure chamber 11 and the outlet side chamber 12 are connected via a second orifice 15 opened in the piston 10, and the outlet side chamber 12 is connected to the outlet 5 via an outlet side passage 16.

弁室３内には上端が開口し、下部に連通孔１７を開けた隔壁１８を設け、その入口４側に中空球形のパイロットフロート弁１９を自由状態で収容する。パイロットフロート弁１９は液面と共に浮上降下し、下部側方に形成した第１オリフィス２０を開閉し、パイロット通路２１を介して圧力室１１内に復水を導入して圧力を制御して圧力応動弁を駆動する。第２オリフィス１５の開口面積は第１オリフィス２０の開口面積よりも小さく形成する。ピストン１０に温度応動部材としてのバイメタル２２をビスで取付ける。バイメタル２２は低温時に平坦な形状に変形して第２オリフィス１５を閉じ、高温時に湾曲して第２オリフィス１５を開く。   A partition wall 18 having an upper end opened in the valve chamber 3 and a communication hole 17 formed in the lower portion is provided, and a hollow spherical pilot float valve 19 is accommodated in a free state on the inlet 4 side. The pilot float valve 19 rises and falls together with the liquid level, opens and closes the first orifice 20 formed on the lower side, introduces condensate into the pressure chamber 11 through the pilot passage 21, and controls the pressure to control the pressure. Drive the valve. The opening area of the second orifice 15 is formed smaller than the opening area of the first orifice 20. A bimetal 22 as a temperature responsive member is attached to the piston 10 with screws. The bimetal 22 is deformed into a flat shape at a low temperature to close the second orifice 15 and is bent at a high temperature to open the second orifice 15.

始動時、圧力室１１内は低温であり、バイメタル２２は平坦な形状に変形して第２オリフィス１５を閉じている。入口４から流入してくる低温復水によりパイロットフロート弁１９が浮上して第１オリフィス２０を開ける。第１オリフィス２０が開けられると、入口４側の低温復水がパイロット通路２１を介して圧力室１１に導入される。低温復水が圧力室１１に導入されると、第２オリフィス１５がバイメタル２２により閉じられているので圧力室１１の圧力が素早く上昇し、ピストン１０がフロート８を持ち上げて主弁口６を素早く開弁し、復水を出口５に排出する。復水の温度が上昇してくると、バイメタル２２は湾曲して第２オリフィス１５を開ける。以降は周知のパイロット式スチームトラップの作動を繰り返す。   At the time of start-up, the inside of the pressure chamber 11 is at a low temperature, and the bimetal 22 is deformed into a flat shape and closes the second orifice 15. The pilot float valve 19 rises due to the low-temperature condensate flowing in from the inlet 4 and opens the first orifice 20. When the first orifice 20 is opened, the low-temperature condensate on the inlet 4 side is introduced into the pressure chamber 11 via the pilot passage 21. When the low-temperature condensate is introduced into the pressure chamber 11, the second orifice 15 is closed by the bimetal 22, so that the pressure in the pressure chamber 11 rises quickly, and the piston 10 lifts the float 8 to quickly move the main valve port 6. The valve is opened and the condensate is discharged to the outlet 5. When the condensate temperature rises, the bimetal 22 is curved and opens the second orifice 15. Thereafter, the operation of the well-known pilot type steam trap is repeated.

本発明の実施例のパイロット式スチームトラップの断面図である。It is sectional drawing of the pilot type steam trap of the Example of this invention. 図１の圧力応動弁部分の拡大断面図である。It is an expanded sectional view of the pressure responsive valve part of FIG.

符号の説明Explanation of symbols

１ 本体
２ 蓋部材
３ 弁室
４ 入口
５ 出口
６ 主弁口
８ フロート
１０ ピストン
１１ 圧力室
１２ 出口側室
１５ 第２オリフィス
１９ パイロットフロート弁
２０ 第１オリフィス
２１ パイロット通路
２２ バイメタル
DESCRIPTION OF SYMBOLS 1 Main body 2 Lid member 3 Valve chamber 4 Inlet 5 Outlet 6 Main valve port 8 Float 10 Piston 11 Pressure chamber 12 Outlet side chamber 15 Second orifice 19 Pilot float valve 20 First orifice 21 Pilot passage 22 Bimetal

Claims (1)

圧力応動弁の受圧変位壁で一部を形成された圧力室と、圧力室を入口側に連通する第１オリフィスと、圧力室を出口側に連通する第２オリフィスと、第１オリフィスを入口側の液位に応じて開閉し圧力室内に復水を導入して圧力を制御して圧力応動弁を駆動するパイロットフロート弁とを備えたものにおいて、第２オリフィスを低温時に閉じ高温時に開く温度応動部材を配置したことを特徴とするパイロット式スチームトラップ。
A pressure chamber partially formed by a pressure-receiving displacement wall of the pressure responsive valve, a first orifice communicating the pressure chamber to the inlet side, a second orifice communicating the pressure chamber to the outlet side, and the first orifice to the inlet side With a pilot float valve that opens and closes at a low temperature, opens and closes at a low temperature, with a pilot float valve that opens and closes according to the liquid level and introduces condensate into the pressure chamber to control the pressure and drive the pressure responsive valve A pilot-type steam trap characterized by the arrangement of members.
JP2006134986A 2006-05-15 2006-05-15 Pilot type steam trap Pending JP2007303629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006134986A JP2007303629A (en) 2006-05-15 2006-05-15 Pilot type steam trap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006134986A JP2007303629A (en) 2006-05-15 2006-05-15 Pilot type steam trap

Publications (1)

Publication Number Publication Date
JP2007303629A true JP2007303629A (en) 2007-11-22

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Application Number Title Priority Date Filing Date
JP2006134986A Pending JP2007303629A (en) 2006-05-15 2006-05-15 Pilot type steam trap

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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021025619A (en) * 2019-08-08 2021-02-22 株式会社テイエルブイ Valve device
JP2021025620A (en) * 2019-08-08 2021-02-22 株式会社テイエルブイ Valve device
JP2021102973A (en) * 2019-12-25 2021-07-15 株式会社テイエルブイ Valve device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021025619A (en) * 2019-08-08 2021-02-22 株式会社テイエルブイ Valve device
JP2021025620A (en) * 2019-08-08 2021-02-22 株式会社テイエルブイ Valve device
JP7357904B2 (en) 2019-08-08 2023-10-10 株式会社テイエルブイ valve device
JP7368825B2 (en) 2019-08-08 2023-10-25 株式会社テイエルブイ valve device
JP2021102973A (en) * 2019-12-25 2021-07-15 株式会社テイエルブイ Valve device
JP7343901B2 (en) 2019-12-25 2023-09-13 株式会社テイエルブイ valve device

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