JP4890115B2 - Float type steam trap - Google Patents

Float type steam trap Download PDF

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JP4890115B2
JP4890115B2 JP2006165947A JP2006165947A JP4890115B2 JP 4890115 B2 JP4890115 B2 JP 4890115B2 JP 2006165947 A JP2006165947 A JP 2006165947A JP 2006165947 A JP2006165947 A JP 2006165947A JP 4890115 B2 JP4890115 B2 JP 4890115B2
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trap chamber
valve port
outlet passage
outlet
trap
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JP2007333094A (en
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ブッフ クリスティアン
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Tlv Co Ltd
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Tlv Co Ltd
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Description

本発明は、蒸気輸送管や蒸気使用機器等の蒸気配管系に発生する復水をフロートの浮上降下により自動的に排出するフロート式スチームトラップに関し、特に排出流体の高速流による出口通路の浸食を防止できるようにしたものに関する。   The present invention relates to a float type steam trap that automatically discharges condensate generated in a steam piping system such as a steam transport pipe or a steam using equipment by floating up and down of the float, and in particular, erosion of an outlet passage by a high-speed flow of discharged fluid It relates to what can be prevented.

フロート式スチームトラップは、気体と液体の比重差を利用して蒸気は排出せず復水を自動的に排出するものであるが、トラップ室内に空気が充満するとフロートが排水弁口を閉じるので、いわゆるエアバインディングを起こしてしまう問題点があった。そこで従来から、温度応動部材を用いてエアバインディングを防止することが行われている。その一例が特開２００２−２７６８９３に示されている。これは、入口と出口を有するトラップケーシングに入口に連通するトラップ室と出口に連通する出口通路を形成し、トラップ室を出口通路側に連通する排水弁口をトラップ室の下部に設け、トラップ室の液位に応じて排水弁口を開閉するフロートをトラップ室内に収容し、トラップ室を出口通路側に連通する排気弁口をトラップ室の上部に設け、トラップ室の温度に応じて排気弁口を開閉する温度応動部材をトラップ室内に収容したものである。   Float steam traps use the difference in specific gravity between gas and liquid to automatically discharge condensate without discharging steam, but the float closes the drain valve when the trap chamber is filled with air. There was a problem that caused so-called air binding. Therefore, conventionally, air binding is prevented by using a temperature responsive member. An example is shown in JP-A-2002-276893. A trap casing having an inlet and an outlet forms a trap chamber communicating with the inlet and an outlet passage communicating with the outlet, and a drain valve port communicating with the trap chamber on the outlet passage side is provided at a lower portion of the trap chamber. A float that opens and closes the drain valve opening according to the liquid level of the trap chamber is housed in the trap chamber, and an exhaust valve port that communicates the trap chamber with the outlet passage side is provided in the upper part of the trap chamber. A temperature responsive member that opens and closes is housed in a trap chamber.

上記従来技術のフロート式スチームトラップにおいては、排水弁口及び排気弁口からの排出流体が高速流となって出口通路を流下するために、出口通路の内壁が排出流体によって浸食されるという問題点があった。
特開２００２−２７６８９３ In the above-described conventional float steam trap, the exhaust fluid from the drain valve port and the exhaust valve port becomes a high-speed flow and flows down the exit passage, so that the inner wall of the exit passage is eroded by the exhaust fluid. was there.
JP2002-276893

従って、本発明の技術的課題は、出口通路の浸食を防止できるフロー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 float type steam trap that can prevent erosion of the outlet passage.

本発明によれば、入口と出口を有するトラップケーシングに入口に連通するトラップ室と出口に連通する出口通路を形成し、トラップ室を出口通路側に連通する排水弁口をトラップ室の下部に設け、トラップ室の液位に応じて排水弁口を開閉するフロートをトラップ室内に収容し、トラップ室を出口通路側に連通する排気弁口をトラップ室の上部に設け、トラップ室の温度に応じて排気弁口を開閉する温度応動部材をトラップ室内に収容したものにおいて、多数の流入孔を周壁に有するほぼ円筒形状の耐浸蝕性材料製の抵抗部材を出口通路内に配置し、排水弁口及び排気弁口からの排出流体が出口通路を流下するときに抵抗部材の周壁の流入孔を外側から内側に流入し内側に流入した排出流体が抵抗部材の一端開口から出口に流出することを特徴とするフロート式スチームトラップが提供される。この多数の流入孔を周壁に有するほぼ円筒形状の耐浸蝕性材料製の抵抗部材を出口通路内に配置し、排水弁口及び排気弁口からの排出流体が出口通路を流下するときに抵抗部材の周壁の流入孔を外側から内側に流入し内側に流入した排出流体が抵抗部材の一端開口から出口に流出する本発明によれば、排水弁口及び排気弁口からの排出流体の流速を抵抗部材により出口通路内で低下させることができ、出口通路の浸食を防止することができる。 According to the present invention, the trap casing having the inlet and the outlet is formed with the trap chamber communicating with the inlet and the outlet passage communicating with the outlet, and the drain valve port communicating the trap chamber with the outlet passage is provided at the lower portion of the trap chamber. The float that opens and closes the drain valve port according to the liquid level in the trap chamber is accommodated in the trap chamber, and the exhaust valve port that communicates the trap chamber with the outlet passage side is provided at the upper part of the trap chamber, depending on the temperature of the trap chamber in that accommodates the temperature responding member for opening and closing an exhaust valve port to the trap chamber, the Ruhobo cylindrical resistant erosion resistant material made of the resistance member having a large number of inlet holes on the peripheral wall disposed in the outlet passage, drainage When the exhaust fluid from the valve port and the exhaust valve port flows down the outlet passage, the inflow hole of the peripheral wall of the resistance member flows from the outside to the inside, and the exhaust fluid that flows into the inside flows out from the one end opening of the resistance member to the outlet The Float steam trap is provided to symptoms. A large number resistive member made resistant erosion resistant material Ruhobo cylindrical having a inlet in the peripheral wall of this was placed in the outlet passage, the exhaust fluid from the drainage valve port and an exhaust valve port flows down the outlet passage In some cases, the discharge fluid that flows into the inside from the outside through the inflow hole of the peripheral wall of the resistance member and flows into the inside flows out from the one end opening of the resistance member to the outlet. Can be reduced in the outlet passage by the resistance member, and erosion of the outlet passage can be prevented.

上記のように、本発明によれば、出口通路の浸食を防止できるので、長期に渡って良好な排出機能を維持できるという優れた効果を生じる。   As described above, according to the present invention, since the erosion of the outlet passage can be prevented, an excellent effect that a good discharge function can be maintained for a long time is produced.

上記の技術的手段の具体例を示す実施形態を説明する（図１参照）。本実施形態はフリーフロート式スチームトラップに適用したものである。鋳造成形された本体１に蓋部材２をボルト３で締結してケーシングを形成する。ケーシングの内部は仕切壁４で、入口５の連通するトラップ室６と出口７の連通する出口通路８に隔てる。入口５と出口７は同一軸上に形成する。入口５はトラップ室６の上部に開口し、スクリーン９及び通孔１０を開けたフロートカバー１１を介して連通する。   An embodiment showing a specific example of the above technical means will be described (see FIG. 1). This embodiment is applied to a free float type steam trap. The casing 2 is formed by fastening the lid member 2 to the cast body 1 with bolts 3. The inside of the casing is divided by a partition wall 4 into a trap chamber 6 that communicates with the inlet 5 and an outlet passage 8 that communicates with the outlet 7. The inlet 5 and the outlet 7 are formed on the same axis. The inlet 5 opens to the upper part of the trap chamber 6 and communicates via a screen 9 and a float cover 11 having a through hole 10.

出口通路８に抵抗部材１２を配置する。抵抗部材１２は固着したリング状の取付部材１３を出口７にねじ結合することにより出口通路８に配置する。抵抗部材１２と取付部材１３は耐浸蝕性を有するステンレス鋼で作る。抵抗部材１２は周壁に多数の流入孔を有するほぼ円筒形状で、出口通路８を流下する排出流体の流速を低下させる。排出流体は流入孔から抵抗部材１２の内側を流下し取付部材１３を通して出口７に流出する。   A resistance member 12 is disposed in the outlet passage 8. The resistance member 12 is disposed in the outlet passage 8 by screwing the fixed ring-shaped attachment member 13 to the outlet 7. The resistance member 12 and the attachment member 13 are made of stainless steel having erosion resistance. The resistance member 12 has a substantially cylindrical shape having a large number of inflow holes in the peripheral wall, and reduces the flow rate of the discharged fluid flowing down the outlet passage 8. The discharged fluid flows down the inside of the resistance member 12 from the inflow hole and flows out to the outlet 7 through the mounting member 13.

本体１の側壁開口から出口通路８及び仕切壁４を貫通して先端がトラップ室６に突出する弁座１４を挿入し、本体１にねじ結合する弁座保持部材１５で弁座１４を保持する。弁座１４は軸方向の中心に貫通した排水弁口１６を有し、周壁に通孔１７を有する。弁座１４と本体１の仕切壁４の間に気密保持用のＯリング１８を設ける。トラップ室６内に中空球形のフロート１９を自由状態で配置する。フロート１９はトラップ室６の液位に従って浮上降下し、その外表面で排水弁口１６を開閉する。本体１の底壁にフロート座２０を形成する。フロート座２０はフロート１３が排水弁口１６を閉じた位置でフロート１３を保持する。   A valve seat 14 is inserted through the outlet passage 8 and the partition wall 4 from the side wall opening of the main body 1 and the tip protrudes into the trap chamber 6, and the valve seat 14 is held by a valve seat holding member 15 screwed to the main body 1. . The valve seat 14 has a drain valve port 16 penetrating in the center in the axial direction, and a through hole 17 in the peripheral wall. An O-ring 18 for maintaining airtightness is provided between the valve seat 14 and the partition wall 4 of the main body 1. A hollow spherical float 19 is disposed in the trap chamber 6 in a free state. The float 19 rises and falls according to the liquid level in the trap chamber 6 and opens and closes the drain valve port 16 on the outer surface thereof. A float seat 20 is formed on the bottom wall of the main body 1. The float seat 20 holds the float 13 at a position where the float 13 closes the drain valve port 16.

蓋部材２に排気弁口２１を開けた排気弁座２２を間に保持ガイド２３を挟んでねじ結合する。保持ガイド２３に係止するバネ２４で温度応動部材２５を保持ガイド２３に係止する。温度応動部材２５はほぼ円板状の密閉体カプセルで図示はしていないが内部に薄板ダイヤフラムと熱膨張収縮液を充填して形成する。排気弁口２１は蓋部材２に形成した排気通路２６を通して出口通路８に連通する。   An exhaust valve seat 22 having an exhaust valve port 21 opened in the lid member 2 is screwed with a holding guide 23 interposed therebetween. The temperature responsive member 25 is locked to the holding guide 23 by a spring 24 that is locked to the holding guide 23. The temperature responsive member 25 is a substantially disk-shaped sealed capsule, which is not illustrated, and is formed by filling a thin plate diaphragm and a thermal expansion / contraction liquid inside. The exhaust valve port 21 communicates with the outlet passage 8 through an exhaust passage 26 formed in the lid member 2.

上記フリーフロート式スチームトラップの作動は次の通りである。蒸気と復水及び空気が入口５からトラップ室６に流入し、蒸気と空気が上部に復水が下部に分離して溜まる。トラップ室６内の温度が高い場合、温度応動部材２５は膨張して排気弁口２１を閉じる。トラップ室６内の温度が低くなると、温度応動部材２５は収縮して排気弁口２１を開き、トラップ室６内の復水や空気を排気弁口２１から排気通路２６、出口通路８を通して出口６へ排出する。復水や空気の排出流体は出口通路８を流下するときに、流入孔から抵抗部材１２の内側に入り取付部材１３を通して出口７に流出し、流速が抵抗部材１２により低下するので、出口通路８を浸食することがない。トラップ室６内の液位が上昇すると、フロート１９は浮上して排水弁口１６を開き、トラップ室６内の復水を排水弁口１６から通孔１７、出口通路８を通して出口６へ排出する。排出復水は出口通路８を流下するときに、流入孔から抵抗部材１２の内側に入り取付部材１３を通して出口７に流出し、流速が抵抗部材１２により低下するので、出口通路８を浸食することがない。復水の排出によってトラップ室６内の液位が低下すると、フロート１９は降下して外表面で排水弁口１６を直接閉じる。   The operation of the free float steam trap is as follows. Steam, condensate, and air flow into the trap chamber 6 from the inlet 5, and steam and air separate and accumulate in the upper part and condensate in the lower part. When the temperature in the trap chamber 6 is high, the temperature responsive member 25 expands and closes the exhaust valve port 21. When the temperature in the trap chamber 6 decreases, the temperature responsive member 25 contracts to open the exhaust valve port 21, and the condensate and air in the trap chamber 6 are discharged from the exhaust valve port 21 through the exhaust passage 26 and the outlet passage 8. To discharge. When the condensate or air discharge fluid flows down the outlet passage 8, it enters the inside of the resistance member 12 from the inflow hole and flows out to the outlet 7 through the attachment member 13, and the flow velocity is lowered by the resistance member 12. Will not erode. When the liquid level in the trap chamber 6 rises, the float 19 rises and opens the drain valve port 16, and the condensate in the trap chamber 6 is discharged from the drain valve port 16 to the outlet 6 through the through hole 17 and the outlet passage 8. . When the discharged condensate flows down the outlet passage 8, it enters the inside of the resistance member 12 through the inflow hole and flows out to the outlet 7 through the attachment member 13, and the flow velocity is lowered by the resistance member 12, so There is no. When the liquid level in the trap chamber 6 decreases due to the discharge of condensate, the float 19 descends and directly closes the drain valve port 16 on the outer surface.

本発明による実施形態のフリーフロート式スチームトラップの断面図。Sectional drawing of the free float type steam trap of embodiment by this invention.

符号の説明Explanation of symbols

１ 本体
２ 蓋部材
５ 入口
６ トラップ室
７ 出口
８ 出口通路
１２ 抵抗部材
１６ 排水弁口
１９ フロート
２１ 排気弁口
２５ 温度応動部材
DESCRIPTION OF SYMBOLS 1 Main body 2 Lid member 5 Inlet 6 Trap chamber 7 Outlet 8 Outlet passage 12 Resistance member 16 Drain valve port 19 Float 21 Exhaust valve port 25 Temperature response member

Claims (1)

入口と出口を有するトラップケーシングに入口に連通するトラップ室と出口に連通する出口通路を形成し、トラップ室を出口通路側に連通する排水弁口をトラップ室の下部に設け、トラップ室の液位に応じて排水弁口を開閉するフロートをトラップ室内に収容し、トラップ室を出口通路側に連通する排気弁口をトラップ室の上部に設け、トラップ室の温度に応じて排気弁口を開閉する温度応動部材をトラップ室内に収容したものにおいて、多数の流入孔を周壁に有するほぼ円筒形状の耐浸蝕性材料製の抵抗部材を出口通路内に配置し、排水弁口及び排気弁口からの排出流体が出口通路を流下するときに抵抗部材の周壁の流入孔を外側から内側に流入し内側に流入した排出流体が抵抗部材の一端開口から出口に流出することを特徴とするフロート式スチームトラップ。 A trap casing having an inlet and an outlet is formed with a trap chamber communicating with the inlet and an outlet passage communicating with the outlet, and a drain valve opening communicating with the trap chamber on the outlet passage side is provided at a lower portion of the trap chamber, A float that opens and closes the drain valve port is accommodated in the trap chamber, an exhaust valve port that communicates the trap chamber with the outlet passage is provided at the top of the trap chamber, and the exhaust valve port is opened and closed according to the trap chamber temperature. in that accommodates the temperature responding member to trap chamber, the Ruhobo cylindrical resistant erosion resistant material made of the resistance member having a large number of inlet holes on the peripheral wall disposed in the outlet passage, the drainage valve port and an exhaust valve port flow exhaust fluid from, characterized in that the flow out from one end opening of the discharge fluid of the inlet of the peripheral wall has flowed from the outside to the inside to flow inside the resistance member is resistance member when flowing down the outlet passage to the outlet Formula steam trap.
JP2006165947A 2006-06-15 2006-06-15 Float type steam trap Active JP4890115B2 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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JP2007333094A JP2007333094A (en) 2007-12-27
JP4890115B2 true JP4890115B2 (en) 2012-03-07

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5901934B2 (en) * 2011-10-19 2016-04-13 株式会社テイエルブイ steam trap

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932718B2 (en) * 1977-03-22 1984-08-10 勝司 藤原 free float trap
JPS57151006A (en) * 1982-02-19 1982-09-18 Toshiba Corp Steam valve device
JPH0281997A (en) * 1988-09-20 1990-03-22 Mayekawa Mfg Co Ltd Fluid pressure generating device and operating method thereof
JP2002276893A (en) * 2001-03-15 2002-09-25 Tlv Co Ltd Float valve
JP2005172184A (en) * 2003-12-15 2005-06-30 Tlv Co Ltd Steam trap
JP4621553B2 (en) * 2004-07-07 2011-01-26 株式会社東芝 Steam valve and steam turbine with steam valve

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