JPH05263991A - Large capacity steam trap - Google Patents
Large capacity steam trapInfo
- Publication number
- JPH05263991A JPH05263991A JP9000492A JP9000492A JPH05263991A JP H05263991 A JPH05263991 A JP H05263991A JP 9000492 A JP9000492 A JP 9000492A JP 9000492 A JP9000492 A JP 9000492A JP H05263991 A JPH05263991 A JP H05263991A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- valve
- cage
- steam trap
- large capacity
- 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、蒸気使用装置で発生す
る復水を自動的に排出するスチ―ムトラップに関し、特
に大容量の復水を排出できるものに関する。スチ―ムト
ラップは、蒸気が仕事をして凝縮した復水を滞留するこ
となく速やかに、且つ蒸気を漏洩することなく排出しな
ければならない。また、大量の蒸気を使用する装置にお
いては、大量の復水が発生するが、この大量の復水も速
やかに排出しなければならない。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam trap for automatically discharging condensate generated in a steam-using device, and more particularly to a device capable of discharging a large amount of condensate. The steam trap must discharge condensate condensed by the work of steam promptly and without leaking the steam. Further, in a device that uses a large amount of steam, a large amount of condensed water is generated, but this large amount of condensed water must also be promptly discharged.
【０００２】[0002]
【従来の技術】従来は、例えば特公昭６２−６１５３号
公報に示されているようなスチ―ムトラップが用いられ
ていた。これは、復水の流入に応じて浮上降下するフロ
―ト弁をパイロット弁として用い、該パイロットフロ―
ト弁と比較的大径のピストン弁を連接することにより、
復水が流入してパイロットフロ―ト弁が開弁すると大径
のピストン弁が開弁して大量の復水を排出するものであ
る。2. Description of the Related Art Conventionally, a steam trap as disclosed in Japanese Patent Publication No. 62-6153 has been used. This uses a float valve that floats and descends according to the inflow of condensate as a pilot valve.
By connecting a valve with a relatively large piston valve,
When condensate flows in and the pilot float valve opens, a large-diameter piston valve opens and a large amount of condensate is discharged.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のものでは、
構造が複雑で且つトラップとしての形状が大きくなって
しまう問題があった。これは、パイロット弁と該弁に対
応するパイロット弁座や、ピストン弁とピストン弁座等
複数の弁・弁座機構を必要とするためである。構造が複
雑で形状が大きくなると、故障を生じる確率が高くなる
と共に、商品としての価格が高価なものとなってしまう
のである。SUMMARY OF THE INVENTION In the above conventional one,
There is a problem that the structure is complicated and the shape of the trap becomes large. This is because it requires a pilot valve and a pilot valve seat corresponding to the valve, and a plurality of valve / valve seat mechanisms such as a piston valve and a piston valve seat. When the structure is complicated and the shape is large, the probability of failure increases and the price of the product becomes expensive.
【０００４】従って本発明の技術的課題は、複数の弁・
弁座機構を必要とすることなく、構造が簡単で且つ小形
の大容量スチ―ムトラップを得ることである。Therefore, the technical problem of the present invention is to provide a plurality of valves
It is to obtain a large-capacity steam trap having a simple structure and a small size without requiring a valve seat mechanism.
【０００５】[0005]
【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発明の技術的手段は、トラップケ―
シングで入口と弁室と出口を形成し、該弁室に流体通過
用の窓とこの窓の上下に弁座を設けたケ―ジを配置し、
該ケ―ジ内に摺動自在に且つ上記弁座と対向して着座部
を設けた円筒状のプラグを配置して、該プラグに貫通孔
を設けると共に、プラグとトラップケ―シングの間に熱
膨脹媒体を密封した温度応動部材を設けたものである。The technical means of the present invention taken to solve the above technical problems is a trap case.
An inlet, a valve chamber and an outlet are formed by a singing, and a window for fluid passage and a cage provided with valve seats above and below this window are arranged in the valve chamber,
A cylindrical plug provided with a seating portion slidably and facing the valve seat is disposed in the cage, a through hole is provided in the plug, and thermal expansion is provided between the plug and the trap casing. A temperature responsive member that seals the medium is provided.
【０００６】[0006]
【作用】上記の技術的手段の作用は下記の通りである。
入口から弁室内に流入してきた流体は、円筒状のプラグ
から貫通孔を経て温度応動部材の外周に至る。流体の温
度が低い場合、温度応動部材内に密封した熱膨脹媒体は
膨脹しないために、入口側流体圧力により、プラグはケ
―ジの弁座から離座して窓から復水を出口へ排出する。
流入復水の温度が上昇してくると、熱膨脹媒体が膨脹す
ることにより、温度応動部材が伸長して、一端に配置し
たプラグがケ―ジの弁座に着座して、蒸気の出口側への
漏洩を防止する。この場合、プラグに作用する入口側流
体による開弁力は、貫通孔を経て温度応動部材外周に至
った流体圧力により所定量だけ相殺されることにより、
温度応動部材が伸長変位する変位力は小さなもので済み
小形化することができる。The operation of the above technical means is as follows.
The fluid flowing into the valve chamber from the inlet reaches the outer periphery of the temperature responsive member from the cylindrical plug through the through hole. When the temperature of the fluid is low, the thermal expansion medium sealed in the temperature responsive member does not expand. Due to the fluid pressure on the inlet side, the plug moves away from the valve seat of the cage and discharges the condensed water from the window to the outlet. .
When the temperature of the inflowing condensate rises, the thermal expansion medium expands, the temperature responsive member expands, and the plug located at one end is seated on the valve seat of the cage to the steam outlet side. Prevent the leakage of. In this case, the valve opening force of the inlet side fluid acting on the plug is offset by a predetermined amount by the fluid pressure reaching the outer periphery of the temperature responsive member through the through hole,
A small displacement force is required for the temperature responsive member to extend and displace, and it can be made compact.
【０００７】[0007]
【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と蓋１０でトラップケ―シ
ングを形成する。トラップケ―シングで入口２と弁室３
と出口４を形成する。弁室３内で本体１に取付けた穴に
ケ―ジ５の一端を嵌め込み、他端を蓋１０により押え込
んで取付ける。ケ―ジ５の略中央部には流体通過用の複
数の窓１２，１３を設けると共に、この窓１２，１３の
上下に弁座７，８を設ける。ケ―ジ５の内部に、円筒状
のプラグ９を摺動自在に配置する。プラグ９の上下部に
は、ケ―ジ５の弁座７，８に対向して着座部２２，２３
を設ける。プラグ９の下端と蓋１０の内壁の間に温度応
動部材としての円筒状のベロ―ズ２４を取付け、ベロ―
ズ２４の内部に熱膨脹媒体２５を密封する。熱膨脹媒体
２５は、水より少し沸点が低くなるようなアルコ―ル等
の流体、あるいはこれらの流体を混合したものを用い
る。プラグ９の下部に貫通穴２６，２７を設けて、入口
２側とベロ―ズ２４外周空間部とを連通する。プラグ９
の上部の着座部２２の径における面積と、ベロ―ズ２４
の有効径における面積を加えた値が、プラグ９の下部の
着座部２３の径における面積より大きくなるようにす
る。EXAMPLE An example showing a concrete example of the above technical means will be described (see FIG. 1). The body 1 and the lid 10 form a trap casing. Inlet 2 and valve chamber 3 by trap casing
And an outlet 4 is formed. One end of the cage 5 is fitted into the hole attached to the main body 1 in the valve chamber 3, and the other end is pressed by the lid 10 to be attached. A plurality of windows 12 and 13 for passage of fluid are provided in the substantially central portion of the cage 5, and valve seats 7 and 8 are provided above and below the windows 12 and 13, respectively. Inside the cage 5, a cylindrical plug 9 is slidably arranged. Seating portions 22, 23 are provided on the upper and lower portions of the plug 9 so as to face the valve seats 7, 8 of the cage 5.
To provide. A cylindrical bellows 24 as a temperature responsive member is attached between the lower end of the plug 9 and the inner wall of the lid 10,
The thermal expansion medium 25 is sealed inside the nozzle 24. As the thermal expansion medium 25, a fluid such as alcohol whose boiling point is slightly lower than that of water, or a mixture of these fluids is used. Through holes 26 and 27 are provided in the lower portion of the plug 9 to connect the inlet 2 side and the outer peripheral space of the bellows 24. Plug 9
Area of the upper seat of the seat 22 in diameter, and the bellows 24
The value obtained by adding the area in the effective diameter of is larger than the area in the diameter of the seat portion 23 below the plug 9.
【０００８】次に作用を説明する。図１に示す状態にお
いては、入口２から流入してきた流体は、貫通穴２６，
２７を介してベロ―ズ２４の外周空間にも至り、プラグ
９に作用する入口２側圧力は、外周空間に相当する分だ
け相殺されることとなる。入口２から流入してくる復水
の温度が低い場合、ベロ―ズ２４内の熱膨脹媒体２５は
膨脹せず、従って、プラグ９の上部の着座部２２のシ―
ル面積とベロ―ズ２４の有効面積を加えたものが、プラ
グ９の下部の着座部２３のシ―ル面積よりも大きいため
に、プラグ９は入口２側からの流体圧力によって開弁
し、窓１２，１３を経て復水を出口４側へ排出する。入
口２から流入してくる流体の温度が徐々に上昇して、蒸
気圧力の飽和温度に近い所望温度に至ると、熱膨脹媒体
２５が膨脹してプラグ９を上方へ変位させ、弁座７，８
へ着座することにより蒸気の漏洩を防止する。Next, the operation will be described. In the state shown in FIG. 1, the fluid that has flowed in from the inlet 2 passes through the through holes 26,
The pressure reaches the outer peripheral space of the bellows 24 via 27, and the pressure on the inlet 2 side acting on the plug 9 is offset by an amount corresponding to the outer peripheral space. When the temperature of the condensate flowing in from the inlet 2 is low, the thermal expansion medium 25 in the bellows 24 does not expand, and therefore the seat 22 of the seat 22 at the top of the plug 9 does not expand.
Since the sum of the area of the seat and the effective area of the bellows 24 is larger than the seal area of the seat portion 23 at the bottom of the plug 9, the plug 9 is opened by the fluid pressure from the inlet 2 side, Condensed water is discharged to the outlet 4 side through the windows 12 and 13. When the temperature of the fluid flowing in from the inlet 2 gradually rises to a desired temperature close to the saturation temperature of the vapor pressure, the thermal expansion medium 25 expands and displaces the plug 9 upward, and the valve seats 7, 8
Sit down to prevent steam from leaking.
【０００９】[0009]
【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、パイロット弁と主弁等の複
数の弁・弁座機構を必要とせず、また、プラグに作用す
る入口側と出口側の圧力差に基づく変位力が貫通孔とベ
ロ―ズを設けたことにより相殺され、小さなベロ―ズで
もって大きな弁部材を開弁することができ、構造が簡単
になると共に、形状も小さなものとすることができる。The present invention produces the following unique effects. As described above, according to the present invention, a plurality of valve / valve seat mechanisms such as a pilot valve and a main valve are not required, and the displacement force based on the pressure difference between the inlet side and the outlet side acting on the plug causes the through hole. This is offset by the provision of the bellows, and a large valve member can be opened with a small bellows, which simplifies the structure and makes the shape small.
【図１】本発明の大容量スチ―ムトラップの実施例の断
面図である。FIG. 1 is a sectional view of an embodiment of a large capacity steam trap of the present invention.
１ 本体 ２ 入口 ３ 弁室 ４ 出口 ５ ケ―ジ ７，８ 弁座 ９ プラグ １０ 蓋 １２，１３ 窓 ２２，２３ 着座部 ２４ ベロ―ズ ２５ 熱膨脹媒体 ２６，２７ 貫通孔 1 main body 2 inlet 3 valve chamber 4 outlet 5 cage 7,8 valve seat 9 plug 10 lid 12,13 window 22,23 seating portion 24 bellows 25 thermal expansion medium 26,27 through hole
Claims (1)
を形成し、該弁室に流体通過用の窓とこの窓の上下に弁
座を設けたケ―ジを配置し、該ケ―ジ内に摺動自在に且
つ上記弁座と対向して着座部を設けた円筒状のプラグを
配置して、該プラグに貫通孔を設けると共に、プラグと
トラップケ―シングの間に熱膨脹媒体を密封した温度応
動部材を設けた大容量スチ―ムトラップ。1. A trap casing which forms an inlet, a valve chamber, and an outlet, and in which a window for fluid passage and a casing provided with valve seats above and below this window are arranged. A cylindrical plug slidably provided with a seating portion facing the valve seat is disposed, a through hole is provided in the plug, and a thermal expansion medium is sealed between the plug and the trap casing. A large capacity steam trap equipped with a temperature responsive member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9000492A JP2709548B2 (en) | 1992-03-13 | 1992-03-13 | Large capacity steam trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9000492A JP2709548B2 (en) | 1992-03-13 | 1992-03-13 | Large capacity steam trap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05263991A true JPH05263991A (en) | 1993-10-12 |
| JP2709548B2 JP2709548B2 (en) | 1998-02-04 |
Family
ID=13986473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9000492A Expired - Fee Related JP2709548B2 (en) | 1992-03-13 | 1992-03-13 | Large capacity steam trap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2709548B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010286105A (en) * | 2009-06-15 | 2010-12-24 | Tlv Co Ltd | Thermo-responsive steam trap |
| JP2011038610A (en) * | 2009-08-12 | 2011-02-24 | Tlv Co Ltd | Thermally-actuated steam trap |
-
1992
- 1992-03-13 JP JP9000492A patent/JP2709548B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010286105A (en) * | 2009-06-15 | 2010-12-24 | Tlv Co Ltd | Thermo-responsive steam trap |
| JP2011038610A (en) * | 2009-08-12 | 2011-02-24 | Tlv Co Ltd | Thermally-actuated steam trap |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2709548B2 (en) | 1998-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |