JPH06241396A - Float type steam trap - Google Patents
Float type steam trapInfo
- Publication number
- JPH06241396A JPH06241396A JP5014793A JP5014793A JPH06241396A JP H06241396 A JPH06241396 A JP H06241396A JP 5014793 A JP5014793 A JP 5014793A JP 5014793 A JP5014793 A JP 5014793A JP H06241396 A JPH06241396 A JP H06241396A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- exhaust valve
- valve chamber
- chamber
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Temperature-Responsive Valves (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、各種蒸気使用機器や蒸
気配管で発生する復水をフロ―トを用いて自動的に排出
するフロ―ト式スチ―ムトラップに関し、特にこの様式
のトラップに備えられる排気弁の改良に関する。フロ―
ト式スチ―ムトラップは、弁室下部に形成された弁口を
液面に浮かぶフロ―トで開閉するものであり、弁室上部
に溜る空気を排除できない。この空気によって弁室への
復水流入が妨げられるので、復水排出機能を喪失し、蒸
気使用機器の運転効率が低下したり、不良品が発生した
り、また、ウォ―タ・ハンマが起こって機器や配管を破
損する問題がある。従って排気弁を必要とする。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a float-type steam trap for automatically discharging condensate generated in various steam-using devices and steam pipes using a float, and more particularly to a trap of this type. The present invention relates to improvement of an exhaust valve provided. Flow
The tortoise type steam trap opens and closes the valve opening formed in the lower part of the valve chamber by the float floating on the liquid surface, and cannot eliminate the air accumulated in the upper part of the valve chamber. Condensate inflow into the valve chamber is blocked by this air, so the function of condensate drainage is lost, the operating efficiency of steam equipment decreases, defective products occur, and water hammer occurs. There is a problem of damage to equipment and piping. Therefore, an exhaust valve is required.
【0002】[0002]
【従来の技術】排気弁を備えたフロ―ト式スチ―ムトラ
ップの基本的構成は、例えば、特公昭52−46722
号公報から公知である。当該公報から理解されるよう
に、弁ケ―シングで入口と弁室と出口を形成し、弁室を
出口に連通する弁口を弁室下部に形成し、弁室内に配し
たフロ―トで弁口を開閉すると共に、弁室を出口に連通
する排気弁口を弁室上部に形成し、排気弁口を開閉する
排気弁体と、周囲温度に従って変形し排気弁体を制御す
るバイメタルとから成る排気弁を弁室上部に配したもの
である。2. Description of the Related Art The basic structure of a float type steam trap equipped with an exhaust valve is, for example, Japanese Patent Publication No. 52-46722.
It is known from the publication. As can be understood from the publication, a valve casing forms an inlet, a valve chamber, and an outlet, and a valve port communicating the valve chamber with the outlet is formed in the lower part of the valve chamber. An exhaust valve body that opens and closes the valve opening and connects the valve chamber to the outlet is formed in the upper part of the valve chamber, and an exhaust valve body that opens and closes the exhaust valve opening and a bimetal that deforms according to ambient temperature and controls the exhaust valve body. The exhaust valve is arranged above the valve chamber.
【0003】[0003]
【発明が解決しようとする課題】上記のものでは、バイ
メタルが破損して周囲温度に従った温度応動機能を果せ
なくなると、排気弁体が入口側の流体圧力によって排気
弁口を閉止するので、空気を排除できなくなり、復水排
出機能を喪失してしまう問題がある。In the above, when the bimetal is damaged and the temperature responsive function according to the ambient temperature cannot be achieved, the exhaust valve body closes the exhaust valve opening by the fluid pressure on the inlet side. However, there is a problem that air cannot be removed and the condensate discharge function is lost.
【0004】従って、本発明の技術的課題は、排気弁が
温度応動機能を喪失しても開弁できるようにすることで
ある。Therefore, the technical problem of the present invention is to make it possible to open the exhaust valve even if the exhaust valve loses the temperature response function.
【0005】[0005]
【課題を解決する為の手段】上記の技術的課題を解決す
る為に講じた本発明の技術的手段は、弁ケ―シングで入
口と弁室と出口を形成し、弁室を出口に連通する弁口を
弁室下部に形成し、弁室内に配したフロ―トで弁口を開
閉するフロ―ト式スチ―ムトラップにおいて、弁室を出
口に連通する排気弁口を弁室上部に形成し、壁部材と、
壁部材に夫々の外周縁を固着した第1及び第2ダイヤフ
ラムと、第1ダイヤフラムと壁部材との間に封入した膨
脹媒体と、第2ダイヤフラムに連結され排気弁口を開閉
する排気弁体と、第2ダイヤフラム及び排気弁体に設け
られ第1ダイヤフラムの膨脹媒体と接しない面と排気弁
口とを連通する貫通孔とから成る排気弁を弁室上部に配
置したことを特徴とするものである。The technical means of the present invention taken to solve the above technical problem is to form an inlet, a valve chamber and an outlet by valve casing, and to communicate the valve chamber with the outlet. In the float type steam trap in which a valve opening is formed in the lower part of the valve chamber and the valve is opened and closed by a float arranged in the valve chamber, an exhaust valve port communicating the valve chamber with the outlet is formed in the upper part of the valve chamber. Then, with the wall member,
First and second diaphragms having outer peripheral edges fixed to the wall member, an expansion medium enclosed between the first diaphragm and the wall member, and an exhaust valve body connected to the second diaphragm to open and close an exhaust valve port And an exhaust valve, which is provided on the second diaphragm and the exhaust valve body and has a through hole that connects the surface of the first diaphragm that is not in contact with the expansion medium and the exhaust valve port, to the upper portion of the valve chamber. is there.
【0006】[0006]
【作用】上記の技術的手段の作用は下記の通りである。
弁室内の温度が高い場合、壁部材と第1ダイヤフラムと
の間に封入された膨脹媒体は膨脹して、第1及び第2ダ
イヤフラムを排気弁口側に変位せしめ、第2ダイヤフラ
ムに取り付けられた排気弁体が排気弁口を閉止する。弁
室内の復水はフロ―トの浮上降下によって開閉される弁
口から排除される。弁室内の温度が低くなると、膨脹媒
体は収縮し、入口側の流体圧力によって排気弁体が排気
弁口を開き、復水や空気が排気弁口から排除される。弁
室内の復水はフロ―トの浮上降下によって開閉される弁
口からも排除される。The operation of the above technical means is as follows.
When the temperature in the valve chamber is high, the expansion medium enclosed between the wall member and the first diaphragm expands and displaces the first and second diaphragms toward the exhaust valve opening side, and the expansion medium is attached to the second diaphragm. The exhaust valve body closes the exhaust valve port. Condensate in the valve chamber is removed from the valve opening and closing due to the float rising and falling. When the temperature in the valve chamber becomes low, the expansion medium contracts, the exhaust valve body opens the exhaust valve opening due to the fluid pressure on the inlet side, and condensed water and air are removed from the exhaust valve opening. Condensate in the valve chamber is also removed from the valve opening and closing caused by the floating float.
【0007】本発明においては、周囲温度に従った温度
応動機能を喪失する状態として、第1ダイヤフラムが破
れる場合がある。この場合、膨脹媒体を封入した空間は
第1ダイヤフラムと第2ダイヤフラムとの間から貫通孔
及び排気弁口を通して出口に連通するので、膨脹媒体が
出口に流出し、排気弁体が入口側の流体圧力によって排
気弁口を開き、入口側の流体を排出可能にする。また第
2ダイヤフラムが破れる場合も、弁室が第1ダイヤフラ
ムと第2ダイヤフラムとの間から貫通孔及び排気弁口を
通して出口に連通するので、入口側の流体を排出可能に
する。In the present invention, the first diaphragm may be broken as a state in which the temperature responsive function according to the ambient temperature is lost. In this case, the space in which the expansion medium is enclosed communicates with the outlet from between the first diaphragm and the second diaphragm through the through hole and the exhaust valve port, so that the expansion medium flows out to the outlet and the exhaust valve body is connected to the fluid on the inlet side. The exhaust valve opening is opened by the pressure so that the fluid on the inlet side can be discharged. Even when the second diaphragm is broken, the valve chamber communicates with the outlet from between the first diaphragm and the second diaphragm through the through hole and the exhaust valve port, so that the fluid on the inlet side can be discharged.
【0008】[0008]
【実施例】上記の技術的手段の具体例を示す実施例を説
明する(図1参照)。本体1に蓋部材2をボルト(図示
せず)で締結して、内部に弁室3を有する弁ケ―シング
が形成される。本体1の上部に入口4と出口5が同一軸
上に形成される。弁室3の上部にスクリ―ン6及び通孔
7を開けたフロ―トカバ―8が配置される。入口4はス
クリ―ン6から通孔7を通して弁室3に連通される。弁
室3の下部に弁口9を開けた弁座部材10がねじ結合さ
れる。弁室3は弁口9から立上り通路11を通して出口
5に連通される。参照番号12は耐侵食性を有する硬質
材で作られたプラグである。液位に従って浮上降下し弁
口9を開閉する密閉球形のフロ―ト13が弁室3内に自
由状態で配される。参照番号14はフロ―ト13が弁口
9を塞いだ位置で保持するフロ―ト座である。EXAMPLE An example showing a concrete example of the above technical means will be described (see FIG. 1). The lid member 2 is fastened to the main body 1 with bolts (not shown) to form a valve casing having the valve chamber 3 inside. An inlet 4 and an outlet 5 are formed on the main body 1 on the same axis. A screen 6 and a float cover 8 having a through hole 7 are arranged above the valve chamber 3. The inlet 4 communicates with the valve chamber 3 from the screen 6 through the through hole 7. A valve seat member 10 having a valve opening 9 is screwed to the lower portion of the valve chamber 3. The valve chamber 3 communicates with the outlet 5 from the valve opening 9 through the rising passage 11. Reference numeral 12 is a plug made of a hard material having corrosion resistance. A closed spherical float 13 that floats and descends according to the liquid level to open and close the valve opening 9 is arranged in the valve chamber 3 in a free state. Reference numeral 14 is a float seat which is held by the float 13 at a position where it closes the valve opening 9.
【0009】蓋部材2に排気弁口15を開けた弁座部材
16がねじ結合される。弁室3は排気弁口15から連通
路17を通して出口5に連通される。フロ―トカバ―8
の上方に排気弁18が配される。排気弁18は、注入口
19を有する壁部材20と、注入口19を密封する栓部
材21と、壁部材20との間に収容室22を形成する第
1ダイヤフラム23と、収容室22に密封した膨脹媒体
24と、弁座部材16に離着座して排気弁口15を開閉
する排気弁体25と、排気弁体25を固着する第2ダイ
ヤフラム26と、第1及び第2ダイヤフラム23,26
の外周縁を壁部材20との間に挟んで固着する上壁部材
27と、壁部材20に固着したストッパ―28とから成
る。排気弁体25と第2ダイヤフラム26には貫通孔2
9が開けられている。膨脹媒体24は、水、水よりも沸
点の低い液体、或いはそれらの混合物で形成される。排
気弁18は、蓋部材2と弁座部材16の間に挟んで固定
された有頂円筒形状の取付部材30内に収容され、スナ
ップリング31で固定される。取付部材29の上端部に
は両側に二つの流体通過窓32が開けられている。参照
番号33,34は、耐侵食性を有する硬質材で作られた
プラグである。A valve seat member 16 having an exhaust valve port 15 opened is screwed to the lid member 2. The valve chamber 3 communicates with the outlet 5 from the exhaust valve port 15 through the communication passage 17. Float Cover 8
An exhaust valve 18 is disposed above the. The exhaust valve 18 is sealed in a wall member 20 having an inlet 19, a plug member 21 for sealing the inlet 19, a first diaphragm 23 forming an accommodation chamber 22 between the wall member 20, and the accommodation chamber 22. The expanded medium 24, the exhaust valve body 25 that opens and closes the exhaust valve port 15 by being seated on and off the valve seat member 16, the second diaphragm 26 that fixes the exhaust valve body 25, and the first and second diaphragms 23, 26.
The upper wall member 27 is fixed to the wall member 20 by sandwiching the outer peripheral edge of the upper wall member 27, and the stopper 28 fixed to the wall member 20. The through hole 2 is formed in the exhaust valve body 25 and the second diaphragm 26.
9 is open. The expansion medium 24 is formed of water, a liquid having a boiling point lower than that of water, or a mixture thereof. The exhaust valve 18 is housed in a top-end cylindrical mounting member 30 that is fixed by being sandwiched between the lid member 2 and the valve seat member 16, and is fixed by a snap ring 31. Two fluid passage windows 32 are formed on both sides of the upper end of the mounting member 29. Reference numerals 33 and 34 are plugs made of a hard material having corrosion resistance.
【0010】弁室3内の温度が高い場合、膨脹媒体24
が膨脹、排気弁体25が排気弁口15を閉止する。フロ
―ト13は弁室3内の液位に従って浮上降下し、弁口9
を開閉する。弁室3内の温度が低くなると、膨脹媒体2
4が収縮し、排気弁体25が排気弁口15を開き、復水
や空気を排気弁口15から出口5に排出する。フロ―ト
13は弁室3内の液位に従って浮上降下し、弁口9を開
閉する。When the temperature in the valve chamber 3 is high, the expansion medium 24
Expands, and the exhaust valve body 25 closes the exhaust valve port 15. The float 13 floats and descends according to the liquid level in the valve chamber 3,
Open and close. When the temperature in the valve chamber 3 becomes low, the expansion medium 2
4 contracts, the exhaust valve body 25 opens the exhaust valve opening 15, and discharges condensed water and air from the exhaust valve opening 15 to the outlet 5. The float 13 floats and descends according to the liquid level in the valve chamber 3 to open and close the valve port 9.
【0011】第1ダイヤフラム23が破れた場合、膨脹
媒体24を封入した空間は第1ダイヤフラム23と第2
ダイヤフラム26との間から貫通孔29及び排気弁口1
5を通して出口5に連通するので、膨脹媒体24が出口
5に流出し、排気弁体25が入口4側の流体圧力によっ
て排気弁口15を開き、入口4側の流体を排出可能にす
る。また第2ダイヤフラム26が破れる場合も、弁室3
が第1ダイヤフラム23と第2ダイヤフラム26との間
から貫通孔29及び排気弁口15を通して出口5に連通
するので、入口4側の流体を排出可能にする。When the first diaphragm 23 is broken, the space in which the expansion medium 24 is enclosed is separated from the first diaphragm 23 and the second diaphragm 23.
Through hole 29 and exhaust valve port 1 from between diaphragm 26
5, the expansion medium 24 flows out to the outlet 5, and the exhaust valve body 25 opens the exhaust valve port 15 by the fluid pressure on the inlet 4 side so that the fluid on the inlet 4 side can be discharged. In addition, when the second diaphragm 26 breaks, the valve chamber 3
Communicates with the outlet 5 through the through hole 29 and the exhaust valve port 15 from between the first diaphragm 23 and the second diaphragm 26, so that the fluid on the inlet 4 side can be discharged.
【0012】[0012]
【発明の効果】本発明は下記の特有の効果を生じる。上
記のように本発明によるフロ―ト式スチ―ムトラップ
は、排気弁の温度応動機能喪失時に開弁できるので、蒸
気使用機器の運転効率が低下したり、不良品を作った
り、ウォ―タ・ハンマが発生することがない。The present invention produces the following unique effects. As described above, the float type steam trap according to the present invention can be opened when the temperature responsive function of the exhaust valve is lost, so that the operating efficiency of steam-using equipment is reduced, defective products are produced, and water No hammer will occur.
【図1】本発明のフロ―ト式スチ―ムトラップの断面図
である。FIG. 1 is a sectional view of a float type steam trap of the present invention.
1 本体 2 蓋部材 3 弁室 4 入口 5 出口 9 弁口 13 フロ―ト 15 排気弁口 18 排気弁 20 壁部材 23 第1ダイヤフラム 24 膨脹媒体 25 排気弁体 26 第2ダイヤフラム 29 貫通孔 1 Main Body 2 Lid Member 3 Valve Chamber 4 Inlet 5 Outlet 9 Valve Port 13 Float 15 Exhaust Valve Port 18 Exhaust Valve 20 Wall Member 23 First Diaphragm 24 Expansion Medium 25 Exhaust Valve Disc 26 Second Diaphragm 29 Through Hole
Claims (1)
し、弁室を出口に連通する弁口を弁室下部に形成し、弁
室内に配したフロ―トで弁口を開閉するフロ―ト式スチ
―ムトラップにおいて、弁室を出口に連通する排気弁口
を弁室上部に形成し、壁部材と、壁部材に夫々の外周縁
を固着した第1及び第2ダイヤフラムと、第1ダイヤフ
ラムと壁部材との間に封入した膨脹媒体と、第2ダイヤ
フラムに連結され排気弁口を開閉する排気弁体と、第2
ダイヤフラム及び排気弁体に設けられ第1ダイヤフラム
の膨脹媒体と接しない面と排気弁口とを連通する貫通孔
とから成る排気弁を弁室上部に配置したことを特徴とす
るフロ―ト式スチ―ムトラップ。1. A valve casing forms an inlet, a valve chamber, and an outlet, and a valve port communicating the valve chamber with the outlet is formed in the lower part of the valve chamber, and a valve arranged in the valve chamber opens and closes the valve port. In the float type steam trap, an exhaust valve port communicating the valve chamber with the outlet is formed in the upper part of the valve chamber, and a wall member and first and second diaphragms having respective outer peripheral edges fixed to the wall member, An expansion medium enclosed between the first diaphragm and the wall member, an exhaust valve body connected to the second diaphragm to open and close an exhaust valve opening, and a second
An exhaust valve comprising a through hole communicating with an exhaust valve port and a surface of the diaphragm and the exhaust valve body that is not in contact with the expansion medium of the first diaphragm is arranged at the upper part of the valve chamber. -Mutrap.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5014793A JP2928897B2 (en) | 1993-02-15 | 1993-02-15 | Float type steam trap |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5014793A JP2928897B2 (en) | 1993-02-15 | 1993-02-15 | Float type steam trap |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06241396A true JPH06241396A (en) | 1994-08-30 |
JP2928897B2 JP2928897B2 (en) | 1999-08-03 |
Family
ID=12851070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5014793A Expired - Fee Related JP2928897B2 (en) | 1993-02-15 | 1993-02-15 | Float type steam trap |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2928897B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002276893A (en) * | 2001-03-15 | 2002-09-25 | Tlv Co Ltd | Float valve |
JP2014098416A (en) * | 2012-11-13 | 2014-05-29 | Tlv Co Ltd | Float-type steam trap with ball valve |
-
1993
- 1993-02-15 JP JP5014793A patent/JP2928897B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002276893A (en) * | 2001-03-15 | 2002-09-25 | Tlv Co Ltd | Float valve |
JP2014098416A (en) * | 2012-11-13 | 2014-05-29 | Tlv Co Ltd | Float-type steam trap with ball valve |
Also Published As
Publication number | Publication date |
---|---|
JP2928897B2 (en) | 1999-08-03 |
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