JP3030530B2 - Float type steam trap - Google Patents
Float type steam trapInfo
- Publication number
- JP3030530B2 JP3030530B2 JP5281712A JP28171293A JP3030530B2 JP 3030530 B2 JP3030530 B2 JP 3030530B2 JP 5281712 A JP5281712 A JP 5281712A JP 28171293 A JP28171293 A JP 28171293A JP 3030530 B2 JP3030530 B2 JP 3030530B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- valve
- valve chamber
- diaphragm
- chamber
- 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.)
- Expired - Fee Related
Links
Landscapes
- Temperature-Responsive Valves (AREA)
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、弁室内に
空気が溜るとフロ―トが浮上できなくなって復水排出機
能を喪失してしまうので、空気を排出するための排気弁
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 trap type steam trap opens and closes the valve port formed in the lower part of the valve chamber with a float floating on the liquid surface.If air accumulates in the valve chamber, the float cannot float and the condensate discharge function Therefore, an exhaust valve for discharging air 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
排気弁を弁室上部に配置したものにおいて、排気弁が、
排気弁口を開閉する排気弁体と、被制御流体の温度に従
って変形し排気弁体の開閉を制御するバイメタルとから
成るものである。2. Description of the Related Art The basic structure of a float type steam trap having an exhaust valve is disclosed in, for example, Japanese Patent Publication No. 52-46722.
It is known from US Pat. As understood from the publication, an inlet, a valve chamber, and an outlet are formed by valve casing, a valve port communicating the valve chamber with the outlet is formed in a lower portion of the valve chamber, and a float disposed in the valve chamber is provided. An exhaust valve for opening and closing the valve port, forming an exhaust valve port for communicating the valve chamber with the outlet in the upper part of the valve chamber, and disposing an exhaust valve for opening and closing the exhaust valve port in the upper part of the valve chamber.
The exhaust valve includes an exhaust valve body that opens and closes an exhaust valve port, and a bimetal that deforms according to the temperature of the fluid to be controlled and controls opening and closing of the exhaust valve body.
【０００３】[0003]
【発明が解決しようとする課題】上記のものでは、排気
弁体が排気弁口を開口するときと閉口するときの被制御
流体の温度に大きな隔たりを生じる現象がある。これ
は、排気弁体には閉弁時に入口側の流体圧力が閉弁力と
して作用しているものであるので、開口するときには閉
口するときよりも温度がかなり低くならなければ、バイ
メタルによる変形力が流体圧力による閉弁力に打勝てな
いためである。このために排気弁の開弁遅れが生じる。
排気弁の開弁が遅れると、弁室上部に溜る空気によって
弁室への復水流入が妨げられるので、入口側に復水が滞
留して、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った。In the above-described apparatus, there is a phenomenon that the temperature of the controlled fluid when the exhaust valve body opens and closes the exhaust valve port is greatly different. This is because the fluid pressure at the inlet side acts as a valve closing force on the exhaust valve body when the valve is closed. Cannot overcome the valve closing force due to the fluid pressure. Valve opening delay of the exhaust valve for this purpose is arising.
If the opening of the exhaust valve is delayed, the air accumulated at the top of the valve chamber
Condensate inflow into the valve room is blocked, so condensate
And distilled, or reduced operating efficiency of the steam-using equipment, or defective products occur, and Wo - data hammer has a problem of damage to the equipment and piping going.
【０００４】従って、本発明の技術的課題は、排気弁の
開弁遅れを防止することである。Accordingly, it is an object of the present invention to prevent a delay in opening an exhaust valve.
【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を弁室上部に配
置したフロ―ト式スチ―ムトラップにおいて、排気弁
が、壁部材と、壁部材に外周縁を固着したダイヤフラム
と、ダイヤフラムと壁部材との間に封入され被制御流体
の温度に従って体積変化してダイヤフラムを変位せしめ
る膨脹媒体と、ダイヤフラムに連結され排気弁口を開閉
する排気弁体とから成る温度制御機素、及び温度制御機
素に連結され被制御流体の温度に従って変形し低温時に
排気弁体を排気弁口から離間せしめるバイメタルとから
成ることを特徴とするものである。Means for Solving the Problems 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. A valve port is formed in the lower part of the valve chamber, and the valve port 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, and the exhaust valve port is opened and closed. In a float type steam trap in which an exhaust valve to be arranged is disposed in the upper part of the valve chamber, the exhaust valve is enclosed and controlled between the wall member, the diaphragm having the outer peripheral edge fixed to the wall member, and the diaphragm and the wall member. A temperature control element composed of an expansion medium that changes the volume in accordance with the temperature of the fluid to displace the diaphragm, an exhaust valve element connected to the diaphragm to open and close an exhaust valve port, and a temperature of the controlled fluid connected to the temperature control element. Deformed according to the exhaust valve at low temperature It is characterized in that comprising a bimetal allowed to et away.
【０００６】[0006]
【作用】上記の技術的手段の作用は下記の通りである。
被制御流体の温度が低温であると、膨脹媒体は液体化し
て体積が減少するので、ダイヤフラムが入口側の流体圧
力によって変位せしめられ、排気弁体が排気弁口を開口
する。このように、排気弁体には入口側の流体圧力が開
弁力として作用するので開弁遅れを生じることがない。
また始動時等の被制御流体の温度がより低温である場合
には、温度制御機素に連結したバイメタルが排気弁体を
排気弁口から離間せしめるように変形するので、排気弁
体と排気弁口との間により大きな排出流路を形成でき、
多量の空気や復水の素早い排出が可能となる。The operation of the above technical means is as follows.
If the temperature of the controlled fluid is low, the expansion medium is liquefied and its volume is reduced, so that the diaphragm is displaced by the fluid pressure on the inlet side, and the exhaust valve body opens the exhaust valve port. As described above, since the fluid pressure on the inlet side acts on the exhaust valve body as the valve opening force, there is no delay in valve opening.
Further, when the temperature of the controlled fluid is lower at the time of starting or the like, the bimetal connected to the temperature control element is deformed so as to separate the exhaust valve body from the exhaust valve port. A larger discharge channel can be formed between the mouth and
A large amount of air and condensate can be quickly discharged.
【０００７】被制御流体の温度が高くなってくると、バ
イメタルは排気弁体を排気弁口方向に変位せしめる。そ
して膨脹媒体の膨脹によって、ダイヤフラムを介して排
気弁体が排気弁口を閉口する。他方、弁室内に配置した
フロ―トは液位に従って浮上降下して弁口を開閉し、復
水を排出する。When the temperature of the controlled fluid increases, the bimetal displaces the exhaust valve body toward the exhaust valve port. Then, due to the expansion of the expansion medium, the exhaust valve body closes the exhaust valve port via the diaphragm. On the other hand, the float disposed in the valve chamber rises and falls according to the liquid level, opens and closes the valve port, and discharges condensate.
【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２をボルト３で締結し
て、内部に弁室４を有する弁ケ―シングを形成する。本
体１の上部に入口５と出口６を同一軸上に形成する。弁
室４の上部にスクリ―ン７及び通孔を開けたフロ―トカ
バ―８を配置する。入口５はスクリ―ン７を通して弁室
４と連通する。弁室４の下部に弁口９を開けた弁座部材
１０を取り付ける。弁室４は弁口９から立上り通路１１
を通して出口６と連通する。弁室４内に液位に従って浮
上降下し弁口９を開閉する密閉球形のフロ―ト１２を自
由状態で配置する。弁室４内にフロ―ト１２が弁口９を
塞いだ位置で保持するフロ―ト座１３を設ける。An embodiment showing a specific example of the above technical means will be described (see FIG. 1). A lid 2 is fastened to the main body 1 with bolts 3 to form a valve casing having a valve chamber 4 therein. An inlet 5 and an outlet 6 are formed on the same axis on the upper part of the main body 1. At the upper part of the valve chamber 4, a screen 7 and a float cover 8 having a through hole are arranged. The inlet 5 communicates with the valve chamber 4 through a screen 7. A valve seat member 10 having a valve port 9 opened is attached to a lower portion of the valve chamber 4. The valve chamber 4 rises from the valve opening 9 to the passage 11.
Through the outlet 6. A sealed spherical float 12 which floats up and down according to the liquid level and opens and closes the valve port 9 is disposed in the valve chamber 4 in a free state. A float seat 13 is provided in the valve chamber 4 to hold the float 12 at a position where the float 12 closes the valve port 9.
【０００９】蓋２に下方に延びた環状壁１４を形成し、
連通孔１５を開けた保持板１６をスナップリング１７で
固定する。蓋２に排気弁口１８を開けた排気弁座１９を
取り付ける。弁室４は排気弁口１８から蓋２及び本体１
に開けた排気通路２０を介して出口６に連通する。弁室
４内に排気弁座１９に対向して温度制御機素２１とバイ
メタル２２とから成る排気弁を配置する。温度制御機素
２１は、注入口２３を有する壁部材２４と、注入口２３
を密封する栓部材２５と、上壁部材２６と、壁部材２４
と上壁部材２６との端部で外周縁を溶接したダイヤフラ
ム２７と、壁部材２４とダイヤフラム２７とで形成した
収容室２８と、収容室２８に密封した膨脹媒体２９と、
排気弁口１８を開閉するようにダイヤフラム２７に連結
した排気弁体３０と、壁部材２４に固着したストッパ―
３１とから成る。膨脹媒体２９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する。バイメタ
ル２２は中央開口を栓部材２５に溶接する。A downwardly extending annular wall 14 is formed on the lid 2,
The holding plate 16 having the communication hole 15 formed therein is fixed with a snap ring 17. An exhaust valve seat 19 having an exhaust valve port 18 opened is attached to the lid 2. The valve chamber 4 is connected to the lid 2 and the
Communicates with the outlet 6 through an exhaust passage 20 opened to the outside. An exhaust valve including a temperature control element 21 and a bimetal 22 is disposed in the valve chamber 4 so as to face the exhaust valve seat 19. The temperature control element 21 includes a wall member 24 having an inlet 23 and an inlet 23.
, A top member 26, and a wall member 24
A diaphragm 27 having an outer peripheral edge welded at an end of the upper wall member 26, a storage chamber 28 formed by the wall member 24 and the diaphragm 27, and an expansion medium 29 sealed in the storage chamber 28;
An exhaust valve body 30 connected to the diaphragm 27 so as to open and close the exhaust valve port 18, and a stopper fixed to the wall member 24;
31. The expansion medium 29 is formed of water, a liquid having a lower boiling point than water, or a mixture thereof. The bimetal 22 has a central opening welded to the plug member 25.
【００１０】弁室４内の液位が上昇すると、フロ―ト１
２が浮上して弁口９を開口するので、復水は立上がり通
路１１を経て出口６へ排出される。復水が排出されて弁
室４内の液位が低下するとフロ―ト１２も降下して弁口
９を閉口し、蒸気の漏洩を防止する。弁室４内の温度が
低下すると、膨脹媒体２９が液体化して体積が減少する
ので、ダイヤフラム２７が入口側５の流体圧力によって
下方へ押し下げられ、排気弁体３０が排気弁口１８を開
口し、低温流体が排気通路２０を経て出口６へ排出され
る。また始動時等のように弁室４内の温度がより低温で
ある場合は、バイメタル２２が、図示のように下に凸状
に変形して、排気弁体３０を排気弁口１８から離間せし
め、多量の空気や復水の素早い排出を可能とする。低温
流体の排出によって弁室４内の温度が高くなってくる
と、バイメタル２２が上に凸状に変形し、排気弁体３０
を排気弁口１８方向に変位せしめる。そして膨脹媒体２
９の膨脹によってダイヤフラム２７が上方に変位し、排
気弁体３０が排気弁口１８を閉口し、蒸気の漏洩を防止
する。When the liquid level in the valve chamber 4 rises, the float 1
2 rises to open the valve port 9, and condensate is discharged to the outlet 6 through the rising passage 11. When the condensate is discharged and the liquid level in the valve chamber 4 drops, the float 12 also descends and closes the valve port 9 to prevent leakage of steam. When the temperature in the valve chamber 4 decreases, the expansion medium 29 is liquefied and the volume is reduced. Therefore, the diaphragm 27 is pushed down by the fluid pressure on the inlet side 5, and the exhaust valve body 30 opens the exhaust valve port 18. The low temperature fluid is discharged to the outlet 6 through the exhaust passage 20. When the temperature in the valve chamber 4 is lower, such as at the time of starting, the bimetal 22 is deformed to be convex downward as shown in the figure, and the exhaust valve body 30 is separated from the exhaust valve port 18. It allows for rapid discharge of large volumes of air and condensate. When the temperature in the valve chamber 4 rises due to the discharge of the low-temperature fluid, the bimetal 22 is deformed upwardly and the exhaust valve body 30 is deformed.
Is displaced toward the exhaust valve port 18. And expansion medium 2
Due to the expansion of 9, the diaphragm 27 is displaced upward, and the exhaust valve body 30 closes the exhaust valve port 18 to prevent leakage of steam.
【００１１】[0011]
【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れば、排気弁が開弁遅れを生じる
ことがないので、入口側に復水を滞留させることがな
い。そのため、蒸気使用機器の運転効率が低下すること
がなく、またウォ―タ・ハンマを起こすこともない。ま
た、低温流体を素早く排出できるので、蒸気使用機器の
初期立上げ時間を短縮することができる。The present invention has the following specific effects. As described above, according to the present invention, there is no delay in opening the exhaust valve , and condensate does not stay at the inlet side.
No. For this reason, it is not possible to lower the operating efficiency of the steam used equipment, also Wo - that there is no cause other hammer. Also, since low-temperature fluid can be discharged quickly ,
It is possible to shorten the first period start-up time.
【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 ４ 弁室 ５ 入口 ６ 出口 ９ 弁口 １２ フロ―ト １８ 排気弁口 ２１ 温度制御機素 ２２ バイメタル ２４ 壁部材 ２７ ダイヤフラム ２９ 膨脹媒体 ３０ 排気弁体 DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 4 Valve room 5 Inlet 6 Outlet 9 Valve port 12 Float 18 Exhaust valve port 21 Temperature control element 22 Bimetal 24 Wall member 27 Diaphragm 29 Expansion medium 30 Exhaust valve
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
を開閉する排気弁を弁室上部に配置したものにおいて、
排気弁が、壁部材と、壁部材に外周縁を固着したダイヤ
フラムと、ダイヤフラムと壁部材との間に封入され被制
御流体の温度に従って体積変化してダイヤフラムを変位
せしめる膨脹媒体と、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から成る温度制御機素、及び温度
制御機素に連結され被制御流体の温度に従って変形し低
温時に排気弁体を排気弁口から離間せしめるバイメタル
とから成ることを特徴とするフロ―ト式スチ―ムトラッ
プ。1. An inlet, a valve chamber, and an outlet are formed by valve casing, a valve port communicating the valve chamber with the outlet is formed in a lower portion of the valve chamber, and the valve port is opened and closed by a float disposed in the valve chamber. In addition, an exhaust valve opening communicating the valve chamber with the outlet is formed in the upper part of the valve chamber, and an exhaust valve for opening and closing the exhaust valve port is arranged in the upper part of the valve chamber.
An exhaust valve connected to the wall member, a diaphragm having an outer peripheral edge fixed to the wall member, an expansion medium sealed between the diaphragm and the wall member, the expansion medium changing its volume according to the temperature of the controlled fluid to displace the diaphragm, and the diaphragm; A temperature control element comprising an exhaust valve body for opening and closing the exhaust valve port, and a bimetal connected to the temperature control element and deforming according to the temperature of the fluid to be controlled to separate the exhaust valve element from the exhaust valve port at low temperatures. A float type steam trap characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5281712A JP3030530B2 (en) | 1993-10-15 | 1993-10-15 | Float type steam trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5281712A JP3030530B2 (en) | 1993-10-15 | 1993-10-15 | Float type steam trap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07113495A JPH07113495A (en) | 1995-05-02 |
| JP3030530B2 true JP3030530B2 (en) | 2000-04-10 |
Family
ID=17642938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5281712A Expired - Fee Related JP3030530B2 (en) | 1993-10-15 | 1993-10-15 | Float type steam trap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3030530B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5202792B2 (en) * | 2005-06-15 | 2013-06-05 | 株式会社テイエルブイ | Float type steam trap |
| JP5202798B2 (en) * | 2005-10-14 | 2013-06-05 | 株式会社テイエルブイ | Steam trap with piping joint |
| JP5128259B2 (en) * | 2007-12-14 | 2013-01-23 | 株式会社テイエルブイ | Float type steam trap |
| CN113819390B (en) * | 2021-11-22 | 2022-02-11 | 艾肯（江苏）工业技术有限公司 | Discharge capacity automatic adjustment type anti-blocking drain valve |
-
1993
- 1993-10-15 JP JP5281712A patent/JP3030530B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07113495A (en) | 1995-05-02 |
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