JP2562905Y2 - Pilot type steam trap - Google Patents
Pilot type steam trapInfo
- Publication number
- JP2562905Y2 JP2562905Y2 JP11014591U JP11014591U JP2562905Y2 JP 2562905 Y2 JP2562905 Y2 JP 2562905Y2 JP 11014591 U JP11014591 U JP 11014591U JP 11014591 U JP11014591 U JP 11014591U JP 2562905 Y2 JP2562905 Y2 JP 2562905Y2
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- valve
- passage
- outlet
- 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 - Lifetime
Links
Landscapes
- Float Valves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は蒸気配管系に発生する復
水を排出するスチ―ムトラップに関し、特に、補助のパ
イロット弁の開閉で変位する圧力応動部材により主弁体
を駆動して主弁口を開閉するようにしたパイロット式ス
チ―ムトラップに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam trap for discharging condensate generated in a steam piping system, and more particularly to a main valve which is driven by a pressure-responsive member which is displaced by opening and closing an auxiliary pilot valve. The present invention relates to a pilot-operated steam trap that opens and closes its mouth.
【０００２】[0002]
【従来の技術】このパイロット式スチ―ムトラップは、
例えば特開昭５５−１１２４９０号公報に示されてい
る。これは、トラップケ―シングで入口と弁室と出口を
形成し、弁室と出口を連通する主弁口を開閉する主弁体
を、補助のパイロット弁の開閉で変位する圧力応動部材
により開閉制御せしめるものである。2. Description of the Related Art This pilot type steam trap is
For example, it is disclosed in JP-A-55-112490. This means that the inlet, the valve chamber and the outlet are formed by trap casing, and the main valve body that opens and closes the main valve port that communicates the valve chamber and the outlet is opened and closed by a pressure-responsive member that is displaced by opening and closing an auxiliary pilot valve. It is a hurry.
【０００３】[0003]
【本考案が解決しようとする課題】上記のものでは、入
口から弁室内に空気が流入してくるとエア―ロッキング
が起こる問題がある。そこで、このエア―ロッキングを
解消するために、主弁口の一次側と出口を連結するバイ
パス通路を設け、バイパス通路に開閉弁を配置し、エア
―ロッキングが起こったときに開閉弁を開けて空気を出
口に排除することが考えられるが、空気を素早く排除す
るためにはバイパス通路および開閉弁を大きく形成しな
ければならず、トラップ全体が大きくなると共にコスト
高になる問題が生じる。従って、本考案の技術的課題
は、エア―ロッキング解消機能を備えた小型のパイロッ
ト式スチ―ムトラップを得ることである。In the above-mentioned device, there is a problem that air-locking occurs when air flows into the valve chamber from the inlet. Therefore, in order to eliminate this air-locking, a bypass passage connecting the primary side and the outlet of the main valve port is provided, and an on-off valve is disposed in the bypass passage, and the on-off valve is opened when air-locking occurs. Although it is conceivable to remove the air to the outlet, it is necessary to make the bypass passage and the on-off valve large in order to quickly remove the air, which causes a problem that the trap as a whole becomes large and the cost increases. Therefore, a technical problem of the present invention is to obtain a small-sized pilot-type steam trap having an air-locking elimination function.
【０００４】[0004]
【課題を解決するための手段】上記の技術的課題を解決
するために講じた本考案の技術的手段は、トラップケ―
シングで入口と弁室と出口を形成し、弁室と出口を連通
する主弁口を開閉する主弁体を、補助のパイロット弁の
開閉で変位する圧力応動部材により開閉制御せしめるも
のにおいて、補助のパイロット弁と圧力応動部材とを連
結するパイロット通路に主弁口の一次側から連結する一
次側通路を合流せしめ、合流部に三方弁を配置したもの
である。Means for Solving the Problems The technical means of the present invention taken to solve the above technical problem is a trap case.
An inlet, a valve chamber, and an outlet are formed by singing, and a main valve body that opens and closes a main valve port that communicates the valve chamber and the outlet is controlled to be opened and closed by a pressure responsive member that is displaced by opening and closing an auxiliary pilot valve. And a primary passage connected from the primary side of the main valve port to a pilot passage connecting the pilot valve and the pressure responsive member, and a three-way valve is disposed at the junction.
【０００５】[0005]
【作用】上記の技術的手段の作用は下記の通りである。
パイロット通路と一次側通路の合流部に配置した三方弁
を操作することにより、パイロット通路と一次側通路の
連通状態を切換えることができる。即ち通常のトラップ
として機能させる場合は、パイロット通路を開けてパイ
ロット弁と圧力応動部材とを連通状態にすると共に、一
次側通路を合流部で遮断する。これにより補助のパイロ
ット弁の開閉で圧力応動部材が変位し、主弁体が主弁口
を開閉して復水を出口に排出する。エア―ロッキングが
起こった場合は、一次側通路を開けてパイロット通路と
連通状態にする。これにより、圧力応動部材が強制的に
開弁方向に変位し、主弁体が主弁口を開けて空気を素早
く出口に排出する。一次側通路とパイロット通路および
その合流部に配置する三方弁は、圧力応動部材に圧力を
供給できる大きさでよいので小さく形成することができ
る。従って、トラップ全体を小さく安価に作ることがで
きる。The operation of the above technical means is as follows.
By operating the three-way valve disposed at the junction of the pilot passage and the primary passage, the communication state between the pilot passage and the primary passage can be switched. That is, when functioning as a normal trap, the pilot passage is opened to make the pilot valve and the pressure responsive member communicate with each other, and the primary passage is shut off at the junction. As a result, the pressure responsive member is displaced by opening and closing the auxiliary pilot valve, and the main valve body opens and closes the main valve port to discharge condensate to the outlet. If air-locking occurs, open the primary side passage to establish communication with the pilot passage. As a result, the pressure responsive member is forcibly displaced in the valve opening direction, and the main valve body opens the main valve port to quickly discharge air to the outlet. The three-way valve disposed at the primary passage, the pilot passage, and the junction thereof can be small enough to supply pressure to the pressure responsive member, and thus can be formed small. Therefore, the entire trap can be made small and inexpensive.
【０００６】[0006]
【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を締結して内部
に弁室３を有するトラップケ―シングを形成する。トラ
ップケ―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を開閉する主弁体である中空球形のフロ―ト８を自由
状態で収容する。An embodiment showing a specific example of the above technical means will be described (see FIG. 1). A lid member 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 on the upper part of the trap casing. A valve seat 7 having a main valve opening 6 communicating the valve chamber 3 and the outlet 5 is attached to a lower side of the valve chamber 3. A hollow spherical float 8 serving as a main valve body for opening and closing the main valve port 6 is accommodated in the valve chamber 3 in a free state.
【０００７】弁室３の底壁で隔てて底蓋９との間に圧力
室を形成する。圧力室内に圧力応動部材としてのピスト
ン１０を配置し、圧力室を第１圧力室１１と第２圧力室
１２とに気密的に仕切る。ピストン１０の上面に連結棒
１３を取付ける。連結棒１３の先端は弁室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―ト８に当接する。第１圧力室１１と第２圧力室１２
はピストン１０に開けた細孔１５を介して連結し、第１
圧力室１１は出口側通路１６を介して出口５に連結す
る。A pressure chamber is formed between the bottom wall of the valve chamber 3 and the bottom cover 9. A piston 10 as a pressure responsive member is disposed in the pressure chamber, and the pressure chamber is airtightly partitioned into a first pressure chamber 11 and a second pressure chamber 12. The connecting rod 13 is mounted on the upper surface of the piston 10. The distal end of the connecting rod 13 extends airtightly through the bottom wall of the valve chamber 3 into the valve chamber 3, and abuts on the float 8 via the receiving plate 14. First pressure chamber 11 and second pressure chamber 12
Is connected to a piston 10 through a small hole 15 opened,
The pressure chamber 11 is connected to the outlet 5 through an outlet passage 16.
【０００８】弁室３の上部側方に開口１７と連通路１８
で連通したパイロット室１９を形成し、パイロット弁で
ある中空球形のパイロットフロ―ト２０を自由状態で収
容する。パイロットフロ―ト２０は液面と共に浮上降下
し、下部側方に形成したパイロット弁口２１を開閉す
る。パイロット弁口２１と第２圧力室１２をパイロット
通路２２を介して連結する。An opening 17 and a communication passage 18 are formed on the upper side of the valve chamber 3.
The pilot chamber 19 communicates with the above, and a hollow spherical pilot float 20 as a pilot valve is accommodated in a free state. The pilot float 20 rises and falls with the liquid level, and opens and closes a pilot valve port 21 formed on the lower side. The pilot valve port 21 and the second pressure chamber 12 are connected via a pilot passage 22.
【０００９】入口通路２３から分岐した一次側通路２４
をパイロット通路２２に合流させ、合流部に三方弁２５
を配置する。図示の状態はパイロット通路２２を介して
パイロット弁口２１と第２圧力室１２が連結し、一次側
通路２４を遮断した状態を示している。この状態から三
方弁を操作することにより、一次側通路２４を第２圧力
室１２連結した状態と、パイロット弁口２１および一次
側通路２４を第２圧力室１２と遮断した状態に切換える
ことができる。A primary passage 24 branched from the inlet passage 23
Into the pilot passage 22 and a three-way valve 25
Place. The illustrated state shows a state where the pilot valve port 21 and the second pressure chamber 12 are connected via the pilot passage 22 and the primary side passage 24 is shut off. By operating the three-way valve from this state, it is possible to switch between a state in which the primary passage 24 is connected to the second pressure chamber 12 and a state in which the pilot valve port 21 and the primary passage 24 are shut off from the second pressure chamber 12. .
【００１０】上記実施例の作動は下記の通りである。通
常のトラップとして機能させる場合は、パイロット通路
２２を開けてパイロット弁口２１と第２圧力室１２を連
通状態にすると共に、一次側通路２４を合流部で遮断す
る。入口４から流入する復水が微少または無いと、パイ
ロットフロ―ト２０は降下してパイロット弁口２１を塞
いでいる。第２圧力室１２内の圧力は細孔１５を通して
出口５側に抜けるため、ピストン１０がフロ―ト８の自
重で下方に押し下げられ、フロ―ト８が弁座７に着座し
て主弁口６を塞いでいる。入口４から多量の復水が流入
してくると、パイロットフロ―ト２０はパイロット室１
９内の液位の上昇と共に浮上してパイロット弁口２１を
開ける。第２圧力室１２内の圧力が上昇し、ピストン１
０が上方に駆動されてフロ―ト８が持ち上げられ、主弁
口６が開き、復水が出口５に排出される。エア―ロッキ
ングが起こった場合は、三方弁２５を図示の状態から時
計回り方向に９０度あるいは１８０度回転させて、一次
側通路２４を開けて第２圧力室１２と連通状態にする。
第２圧力室１２内の圧力が上昇し、ピストン１０が上方
に駆動されてフロ―ト８が持ち上げられ、主弁口６が開
き、流体が出口５に排出される。また三方弁２５を図示
の状態から反時計回り方向に９０度回転させて、パイロ
ット弁口２１および一次側通路２４を第２圧力室１２と
遮断した状態にすることにより、トラップを閉弁せしめ
ることができる。The operation of the above embodiment is as follows. When functioning as a normal trap, the pilot passage 22 is opened to make the pilot valve port 21 and the second pressure chamber 12 communicate with each other, and the primary side passage 24 is shut off at the junction. If the amount of condensate flowing from the inlet 4 is very small or not, the pilot float 20 descends and closes the pilot valve port 21. Since the pressure in the second pressure chamber 12 passes through the small holes 15 to the outlet 5 side, the piston 10 is pushed down by the weight of the float 8 and the float 8 is seated on the valve seat 7 and the main valve port is opened. Blocking 6. When a large amount of condensate flows in from the inlet 4, the pilot float 20 moves to the pilot room 1.
The pilot valve port 21 is opened by rising with the rise of the liquid level in 9. The pressure in the second pressure chamber 12 increases and the piston 1
0 is driven upward, the float 8 is lifted, the main valve port 6 is opened, and the condensate is discharged to the outlet 5. When air-locking occurs, the three-way valve 25 is rotated 90 degrees or 180 degrees clockwise from the state shown in the figure to open the primary side passage 24 and establish communication with the second pressure chamber 12.
The pressure in the second pressure chamber 12 increases, the piston 10 is driven upward, the float 8 is lifted, the main valve port 6 is opened, and the fluid is discharged to the outlet 5. The trap is closed by rotating the three-way valve 25 by 90 degrees in the counterclockwise direction from the state shown in the drawing, so that the pilot valve port 21 and the primary side passage 24 are cut off from the second pressure chamber 12. Can be.
【００１１】[0011]
【考案の効果】本考案は下記の特有の効果を生じる。上
記のように本考案によれば、パイロット通路に合流する
一次側通路を設け、合流部に三方弁を配置することによ
り、エア―ロッキング解消機能を備えた小型のパイロッ
ト式スチ―ムトラップを作ることができる。[Effects of the Invention] The present invention has the following specific effects. As described above, according to the present invention, a small pilot-type steam trap having an air-locking elimination function is provided by providing a primary side passage that merges with the pilot passage and arranging a three-way valve at the junction. Can be.
【図１】本考案の実施例のパイロット式スチ―ムトラッ
プの断面図である。FIG. 1 is a sectional view of a pilot type steam trap according to an embodiment of the present invention.
１ 本体 ２ 蓋部材 ３ 弁室 ４ 入口 ５ 出口 ６ 主弁口 ８ フロ―ト １０ ピストン １１ 第１圧力室 １２ 第２圧力室 ２０ パイロットフロ―ト ２１ パイロット弁口 ２２ パイロット通路 ２４ 一次側通路 ２５ 三方弁 DESCRIPTION OF SYMBOLS 1 Main body 2 Lid member 3 Valve room 4 Inlet 5 Outlet 6 Main valve port 8 Float 10 Piston 11 First pressure chamber 12 Second pressure chamber 20 Pilot float 21 Pilot valve port 22 Pilot passage 24 Primary passage 25 Three-way valve
Claims (1)
を形成し、弁室と出口を連通する主弁口を開閉する主弁
体を、補助のパイロット弁の開閉で変位する圧力応動部
材により開閉制御せしめるものにおいて、補助のパイロ
ット弁と圧力応動部材とを連結するパイロット通路に主
弁口の一次側から連結する一次側通路を合流せしめ、合
流部に三方弁を配置したパイロット式スチ―ムトラッ
プ。An inlet, a valve chamber, and an outlet are formed by trap casing, and a main valve body that opens and closes a main valve port communicating the valve chamber and the outlet is formed by a pressure responsive member that is displaced by opening and closing an auxiliary pilot valve. A pilot-type steam trap having a three-way valve arranged at a junction with a pilot passage connecting an auxiliary pilot valve and a pressure responsive member with a primary passage connected from a primary side of a main valve port. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11014591U JP2562905Y2 (en) | 1991-12-13 | 1991-12-13 | Pilot type steam trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11014591U JP2562905Y2 (en) | 1991-12-13 | 1991-12-13 | Pilot type steam trap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0550296U JPH0550296U (en) | 1993-07-02 |
| JP2562905Y2 true JP2562905Y2 (en) | 1998-02-16 |
Family
ID=14528187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11014591U Expired - Lifetime JP2562905Y2 (en) | 1991-12-13 | 1991-12-13 | Pilot type steam trap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2562905Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009168084A (en) * | 2008-01-15 | 2009-07-30 | Tlv Co Ltd | Pilot type steam trap |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4800093B2 (en) * | 2006-04-14 | 2011-10-26 | 株式会社テイエルブイ | Pilot steam trap |
| JP5455544B2 (en) * | 2009-10-15 | 2014-03-26 | 株式会社テイエルブイ | Pilot steam trap |
-
1991
- 1991-12-13 JP JP11014591U patent/JP2562905Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009168084A (en) * | 2008-01-15 | 2009-07-30 | Tlv Co Ltd | Pilot type steam trap |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0550296U (en) | 1993-07-02 |
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