JP2745272B2 - Thermo-responsive steam trap - Google Patents
Thermo-responsive steam trapInfo
- Publication number
- JP2745272B2 JP2745272B2 JP35511892A JP35511892A JP2745272B2 JP 2745272 B2 JP2745272 B2 JP 2745272B2 JP 35511892 A JP35511892 A JP 35511892A JP 35511892 A JP35511892 A JP 35511892A JP 2745272 B2 JP2745272 B2 JP 2745272B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- diaphragm
- outlet
- seat member
- 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自動的に排出するスチ―ムトラ
ップに関し、特に、蒸気と復水で加熱冷却されその温度
に応じて膨脹収縮する媒体を含む温度制御機素を用い
て、所望温度以下の復水を系外へ排出する熱応動式スチ
―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 automatically discharging condensate generated in various steam-using equipment and steam pipes, and more particularly, to a steam trap which is heated and cooled by steam and condensate and expanded according to the temperature. The present invention relates to a thermo-responsive steam trap for discharging condensate below a desired temperature out of the system by using a temperature control element containing a contracting medium.
【0002】[0002]
【従来の技術】熱応動式スチ―ムトラップの基本的構成
は、例えば、特公昭60−46318号公報から公知で
ある。当該公報から理解されるように、上下二つの皿状
壁部材の間にダイヤフラムの外周縁を固着して上壁部材
とダイヤフラムとの間の内部空間に膨脹媒体を封入しダ
イヤフラムに弁部材を連結した温度制御機素を、入口の
連通する弁室内に配置し、膨脹媒体の膨脹収縮を利用し
て、ダイヤフラムを介して弁部材を駆動し、これによっ
て、弁室と出口とを連通する導出路を有する弁座部材
に、弁部材を離着座せしめるようにしたものである。2. Description of the Related Art The basic structure of a thermally responsive steam trap is known, for example, from Japanese Patent Publication No. 60-46318. As understood from the publication, the outer peripheral edge of the diaphragm is fixed between the upper and lower two dish-shaped wall members, the expansion medium is sealed in the internal space between the upper wall member and the diaphragm, and the valve member is connected to the diaphragm. The temperature control element is disposed in the valve chamber communicating with the inlet, and the valve member is driven through the diaphragm by utilizing the expansion and contraction of the expansion medium, thereby connecting the outlet with the valve chamber. The valve member is adapted to be detached and seated on the valve seat member having the above.
【0003】弁室内に高温の蒸気が流入してくると、膨
脹媒体が膨脹して、弁部材を弁座部材に着座せしめ、導
出路を閉止する。これによって、蒸気の排出を防止す
る。また、低温の復水が流入してくると、膨脹媒体が収
縮して、弁部材を弁座部材から離座せしめ、導出路を開
ける。これによって、復水を系外へ排出する。[0003] When high-temperature steam flows into the valve chamber, the expansion medium expands, and the valve member is seated on the valve seat member, and the outlet path is closed. This prevents the discharge of steam. Also, when low-temperature condensate flows in, the expansion medium contracts, causing the valve member to move away from the valve seat member and open the outlet path. As a result, the condensate is discharged out of the system.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな様式の熱応動式スチ―ムトラップにあっては、膨脹
媒体の膨脹収縮温度を境にして小刻みに開閉弁作動を繰
り返すので、復水がたらたらと排出され、蒸気漏れと見
間違うことがあり望ましくない。また弁部材と弁座部材
が早期に摩耗して蒸気漏れを生じてしまう問題がある。However, in such a thermo-responsive steam trap of this type, the on-off valve operation is repeated little by little after the expansion and contraction temperature of the expansion medium, so that the condensate cannot be recovered. And it is not desirable because it may be mistaken for a steam leak. Further, there is a problem that the valve member and the valve seat member are worn out early, causing steam leakage.
【0005】従って、本発明の技術的課題は、間欠的な
開閉弁作動を行う熱応動式スチ―ムトラップを得ること
である。[0005] Accordingly, it is an object of the present invention to provide a heat-responsive steam trap that performs an intermittent on-off valve operation.
【0006】[0006]
【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、導出路を有する弁座部材を弁
室と出口との間に配置し、上下二つの壁部材と、両壁部
材の間に外周縁を固着したダイヤフラムと、上壁部材と
ダイヤフラムとの間に封入した膨脹媒体と、ダイヤフラ
ムに連結した弁部材とから成る温度制御機素を弁室内に
配置し、膨脹媒体の膨脹収縮によるダイヤフラムの変位
によって弁部材を弁座部材に離着座せしめて導出路を開
閉するものにおいて、弁座部材の上面に環状溝を形成
し、環状溝の底壁を下壁部材下面とほぼ平行に内側に向
かって低く形成し、環状溝の内周壁を弁座部材方向に向
いた傾斜面に形成したことを特徴とするものである。In order to solve the above-mentioned technical problems, the technical means of the present invention is to provide a valve seat having an inlet, a valve chamber, and an outlet formed by valve casing and having an outlet path. A member disposed between the valve chamber and the outlet, two upper and lower wall members, a diaphragm having an outer peripheral edge fixed between the two wall members, an expansion medium sealed between the upper wall member and the diaphragm, a diaphragm; A valve member connected to a valve member disposed in the valve chamber, and the valve member is detached and seated on the valve seat member by displacement of the diaphragm due to expansion and contraction of the expansion medium to open and close the outlet path. An annular groove was formed on the upper surface of the member, the bottom wall of the annular groove was formed inward toward the inside substantially in parallel with the lower surface of the lower wall member, and the inner peripheral wall of the annular groove was formed on an inclined surface facing the valve seat member. It is characterized by the following.
【0007】[0007]
【作用】上記の技術的手段の作用は下記の通りである。
弁部材が弁座部材から離座している開弁時において、弁
座部材上面の環状溝底壁と下壁部材下面との間を流れる
復水は、環状溝の内周壁に形成した傾斜面によって弁部
材方向に流れを変え、弁部材に開弁方向の力を作用せし
めながら、導出路を通って出口から流出する。この状態
から膨脹媒体が膨脹して弁部材を弁座部材に着座閉弁さ
せるためには、復水による開弁方向の力に打勝つ余分の
膨脹が必要となる。従って、次に膨脹媒体が収縮して弁
部材を弁座部材から離座開弁させるためには、余分の膨
脹分が収縮する必要があり、間欠的な開閉弁作動を行う
ことができる。The operation of the above technical means is as follows.
At the time of opening the valve member, which is separated from the valve seat member, the condensate flowing between the annular groove bottom wall on the upper surface of the valve seat member and the lower surface of the lower wall member has an inclined surface formed on the inner peripheral wall of the annular groove. As a result, the flow is changed in the direction of the valve member, and flows out from the outlet through the outlet passage while applying a force in the valve opening direction to the valve member. In order for the expansion medium to expand from this state to seat and close the valve member to the valve seat member, extra expansion is required to overcome the force in the valve opening direction due to condensate. Therefore, in order for the expansion medium to contract and the valve member to be separated from the valve seat member and open, the excess expansion must be contracted, and the intermittent on-off valve operation can be performed.
【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と図2参照)。図1において、上ケ―シン
グ1と下ケ―シング2とをねじ結合して、内部に弁室3
を有する弁ケ―シングが形成される。上ケ―シング1に
入口4が、下ケ―シング2に出口5が形成される。弁室
3と出口5との間の隔壁6に、弁座部材7がねじ結合さ
れている。弁座部材7の中央に、弁室3と出口5とを連
通する貫通導出路8が形成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment showing a specific example of the above technical means will be described (see FIGS. 1 and 2). In FIG. 1, an upper case 1 and a lower case 2 are screwed together to form a valve chamber 3 therein.
Is formed. The upper case 1 has an inlet 4 and the lower case 2 has an outlet 5. A valve seat member 7 is screwed to a partition 6 between the valve chamber 3 and the outlet 5. In the center of the valve seat member 7, a through-out passage 8 that connects the valve chamber 3 and the outlet 5 is formed.
【0009】弁座部材7の上方に、温度制御機素9が位
置する。温度制御機素9は、注入口10を有する上壁部
材11と、注入口10を密封する栓部材12と、上壁部
材11との間に収容室13を形成する第1ダイヤフラム
14と、収容室13に密封した膨脹媒体15と、弁座部
材7に離着座して導出路8を開閉する弁部材16と、弁
部材16を環状部材17と共に固着する第2ダイヤフラ
ム18と、第1及び第2ダイヤフラム14,18の外周
縁を上壁部材11との間に挟んで固着する下壁部材19
と、上壁部材11に固着したストッパ―20とから成
る。膨脹媒体15は、水、水より沸点の低い液体、或い
はそれらの混合物で形成される。A temperature control element 9 is located above the valve seat member 7. The temperature control element 9 includes an upper wall member 11 having an inlet 10, a plug member 12 for sealing the inlet 10, a first diaphragm 14 forming a housing chamber 13 between the upper wall member 11, An expansion medium 15 sealed in the chamber 13, a valve member 16 which is detachably seated on the valve seat member 7 to open and close the outlet passage 8, a second diaphragm 18 for fixing the valve member 16 together with the annular member 17, a first and a second diaphragm 18. Lower wall member 19 which fixes the outer peripheral edges of the two diaphragms 14 and 18 between the upper wall member 11
And a stopper 20 fixed to the upper wall member 11. The expansion medium 15 is formed of water, a liquid having a lower boiling point than water, or a mixture thereof.
【0010】温度制御機素9は、隔壁6と弁座部材7の
間に挟んで固定された有底円筒形状の取付部材21内に
収容され、スナップリング22で固定される。取付部材
21の下端部には両側に二つの復水通過窓23が開けら
れている。The temperature control element 9 is accommodated in a bottomed cylindrical mounting member 21 fixed and held between the partition wall 6 and the valve seat member 7, and is fixed by a snap ring 22. At the lower end of the mounting member 21, two condensate passage windows 23 are opened on both sides.
【0011】弁座部材7の上面に環状溝25を形成す
る。環状溝25の底壁26は、下壁部材19下面とほぼ
平行に、外側から内側に向かって次第に低く形成し、下
壁部材19下面との間に復水が流れる狭い通過空間27
を形成する。環状溝25の内周壁28は、弁部材16方
向に向かって上方内側に傾斜させた傾斜面として形成す
る。弁部材16は、中央に貫通孔24を有し、その周囲
下面が弁座部材7の導出路8と環状溝25との間の上面
で形成される環状シ―ル面29に離着座する。An annular groove 25 is formed on the upper surface of the valve seat member 7. The bottom wall 26 of the annular groove 25 is formed so as to be gradually lower from the outside toward the inside in a direction substantially parallel to the lower surface of the lower wall member 19, and a narrow passage space 27 through which condensate flows with the lower surface of the lower wall member 19.
To form The inner peripheral wall 28 of the annular groove 25 is formed as an inclined surface inclined upward and inward toward the valve member 16. The valve member 16 has a through hole 24 at the center, and its lower peripheral surface is separated from and seated on an annular seal surface 29 formed by an upper surface between the outlet passage 8 of the valve seat member 7 and the annular groove 25.
【0012】入口4から弁室3に流入する流体の温度が
高い場合、膨脹媒体15は膨脹し、第1及び第2ダイヤ
フラム14,18を介して弁部材16を下方に変位せし
め、その結果、弁部材16の貫通孔24の周囲下面を弁
座部材7の環状シ―ル面29に着座せしめて、導出路8
を閉止し、高温流体即ち蒸気の流出を防止する。流体温
度が放熱等により所定値よりも低くなると、膨脹媒体1
5は収縮し、弁部材16が弁座部材7から離座し、導出
路8を開ける。低温流体即ち復水は環状溝25の底壁2
6と下壁部材19下面との間の通過空間27を通り、環
状溝25の内周壁28によって弁部材16に開弁方向の
力を作用せしめながら、導出路8から出口5に流出す
る。When the temperature of the fluid flowing into the valve chamber 3 from the inlet 4 is high, the expansion medium 15 expands, displacing the valve member 16 downwardly through the first and second diaphragms 14 and 18, and as a result, The lower surface around the through hole 24 of the valve member 16 is seated on the annular seal surface 29 of the valve seat member 7, and the outlet path 8 is formed.
To prevent outflow of hot fluid or vapor. When the fluid temperature becomes lower than a predetermined value due to heat radiation or the like, the expansion medium 1
5 is contracted, the valve member 16 is separated from the valve seat member 7, and the outlet path 8 is opened. The low-temperature fluid, that is, the condensate,
The fluid flows through the passage space 27 between the base member 6 and the lower surface of the lower wall member 19, and flows out from the outlet passage 8 to the outlet 5 while applying a force in the valve opening direction to the valve member 16 by the inner peripheral wall 28 of the annular groove 25.
【0013】[0013]
【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熱応動式スチ―ムトラップは、
間欠的な開閉弁作動を行うことができるので、復水排出
時に蒸気漏れと見間違うことがなく、また弁部材と弁座
部材の摩耗が生じ難くなり長期間に渡って良好な開閉弁
作動を行うことができる。The present invention has the following specific effects. As described above, the thermally responsive steam trap according to the present invention comprises:
Since intermittent on-off valve operation can be performed, there is no mistake for steam leakage at the time of condensate discharge, and wear of the valve member and valve seat member is less likely to occur. It can be carried out.
【図1】本発明の実施例の熱応動式スチ―ムトラップの
断面図である。FIG. 1 is a sectional view of a thermally responsive steam trap according to an embodiment of the present invention.
【図2】図1の温度制御機素と弁座部材部分の拡大断面
図である。FIG. 2 is an enlarged cross-sectional view of a temperature control element and a valve seat member of FIG. 1;
3 弁室 4 入口 5 出口 7 弁座部材 8 導出路 9 温度制御機素 11 上壁部材 14 第1ダイヤフラム 15 膨脹媒体 16 弁部材 18 第2ダイヤフラム 19 下壁部材 25 環状溝 26 底壁 27 通過空間 28 内周壁 29 環状シ―ル面 REFERENCE SIGNS LIST 3 valve chamber 4 inlet 5 outlet 7 valve seat member 8 outlet path 9 temperature control element 11 upper wall member 14 first diaphragm 15 expansion medium 16 valve member 18 second diaphragm 19 lower wall member 25 annular groove 26 bottom wall 27 passage space 28 inner peripheral wall 29 annular seal surface
Claims (1)
し、導出路を有する弁座部材を弁室と出口との間に配置
し、上下二つの壁部材と、両壁部材の間に外周縁を固着
したダイヤフラムと、上壁部材とダイヤフラムとの間に
封入した膨脹媒体と、ダイヤフラムに連結した弁部材と
から成る温度制御機素を弁室内に配置し、膨脹媒体の膨
脹収縮によるダイヤフラムの変位によって弁部材を弁座
部材に離着座せしめて導出路を開閉するものにおいて、
弁座部材の上面に環状溝を形成し、環状溝の底壁を下壁
部材下面とほぼ平行に内側に向かって低く形成し、環状
溝の内周壁を弁座部材方向に向いた傾斜面に形成したこ
とを特徴とする熱応動式スチ―ムトラップ。An inlet, a valve chamber, and an outlet are formed by valve casing, a valve seat member having an outlet path is disposed between the valve chamber and the outlet, and two upper and lower wall members and two wall members are provided. A temperature control element including a diaphragm having an outer peripheral edge fixed therebetween, an expansion medium sealed between the upper wall member and the diaphragm, and a valve member connected to the diaphragm is disposed in the valve chamber, and the expansion and contraction of the expansion medium is performed. In which the valve member is separated from and seated on the valve seat member by the displacement of the diaphragm due to the opening and closing of the outlet path,
An annular groove is formed on the upper surface of the valve seat member, the bottom wall of the annular groove is formed inward toward the inside substantially in parallel with the lower wall member lower surface, and the inner peripheral wall of the annular groove is formed on an inclined surface facing the valve seat member direction. A thermally responsive steam trap characterized by being formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35511892A JP2745272B2 (en) | 1992-12-16 | 1992-12-16 | Thermo-responsive steam trap |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35511892A JP2745272B2 (en) | 1992-12-16 | 1992-12-16 | Thermo-responsive steam trap |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06185693A JPH06185693A (en) | 1994-07-08 |
JP2745272B2 true JP2745272B2 (en) | 1998-04-28 |
Family
ID=18442046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP35511892A Expired - Fee Related JP2745272B2 (en) | 1992-12-16 | 1992-12-16 | Thermo-responsive steam trap |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2745272B2 (en) |
-
1992
- 1992-12-16 JP JP35511892A patent/JP2745272B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH06185693A (en) | 1994-07-08 |
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