JP5431048B2 - Disc type steam trap - Google Patents

Disc type steam trap Download PDF

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JP5431048B2
JP5431048B2 JP2009167075A JP2009167075A JP5431048B2 JP 5431048 B2 JP5431048 B2 JP 5431048B2 JP 2009167075 A JP2009167075 A JP 2009167075A JP 2009167075 A JP2009167075 A JP 2009167075A JP 5431048 B2 JP5431048 B2 JP 5431048B2
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valve seat
outer ring
pressure chamber
annular portion
variable pressure
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JP2011021682A (en
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哲夫 浅田
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TLV Co Ltd
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Description

本発明は、変圧室すなわち熱力学的蒸気室の圧力変化に応じて弁ディスクが開閉することにより、蒸気配管系に発生する復水を自動的に排出するディスク式スチームトラップに関し、特に弁ディスクが内輪弁座と外輪弁座に密着できるようにしたものに関する。   The present invention relates to a disk-type steam trap that automatically discharges condensate generated in a steam piping system by opening and closing a valve disk in response to a pressure change in a variable pressure chamber, that is, a thermodynamic steam chamber. The present invention relates to an inner ring valve seat and an outer ring valve seat that can be in close contact with each other.

従来のディスク式スチームトラップは、例えば特許文献１に開示されている。これは、入口と出口を有する本体に蓋体を固着して内部に変圧室を形成し、変圧室の中心に開口する噴出孔を設けて入口と変圧室を連通し、噴出孔の外周囲に開口する環状溝を設けて、噴出孔と環状溝の間に内輪弁座を形成すると共に、環状溝の外周囲に外輪弁座を形成し、環状溝から排出孔を設けて変圧室と出口を連通し、内輪弁座と外輪弁座に離着座する円板状の弁ディスクを変圧室に配置したものにおいて、噴出孔に噴出孔の外周壁を摺動するシールリングを配置し、シールリングを弁ディスク方向に付勢する弾性部材を設けたものであり、閉弁時に弁ディスクが上に凸状に湾曲しても、シールリングが噴出孔の外周壁を摺動することにより、弁ディスクが外輪弁座とシールリングに密着でき、変圧室の圧力が所定の開弁圧力に低下してから弁ディスクが外輪弁座とシールリングから離座して開弁するものである。   A conventional disk-type steam trap is disclosed in, for example, Patent Document 1. This is because the lid body is fixed to the main body having an inlet and an outlet to form a variable pressure chamber inside, and an injection hole opening at the center of the variable pressure chamber is provided to connect the inlet and the variable pressure chamber. An annular groove that opens is formed, an inner ring valve seat is formed between the ejection hole and the annular groove, an outer ring valve seat is formed on the outer periphery of the annular groove, a discharge hole is provided from the annular groove, and the variable pressure chamber and the outlet are provided. Communicating with a disc-shaped valve disc that is attached to and detached from the inner ring valve seat and the outer ring valve seat in the variable pressure chamber, a seal ring that slides on the outer peripheral wall of the ejection hole is disposed in the ejection hole, Even if the valve disk is curved upwardly when the valve is closed, the seal disk slides on the outer peripheral wall of the ejection hole so that the valve disk The outer ring valve seat and the seal ring can be in close contact with each other, and the pressure in the variable pressure chamber drops to the specified valve opening pressure Karaben disk is to open the valve unseated from the outer ring valve seat and the seal ring.

特開２００３−２８３８８号公報JP 2003-28388 A

上記従来のディスク式スチームトラップは、噴出孔の外周壁とシールリングとの間に流体中のゴミやスケール等の異物が噛み込むと、シールリングが噴出孔の外周壁を摺動できなくなり、弁ディスクが外輪弁座とシールリングに密着できなくなる問題点があった。   In the conventional disc type steam trap, if foreign matter such as dust or scale in the fluid is caught between the outer peripheral wall of the ejection hole and the seal ring, the seal ring cannot slide on the outer peripheral wall of the ejection hole, and the valve There was a problem that the disk could not adhere to the outer ring valve seat and the seal ring.

したがって本発明が解決しようとする課題は、弁ディスクが内輪弁座と外輪弁座に確実に密着できるディスク式スチームトラップを提供することである。   Therefore, the problem to be solved by the present invention is to provide a disc-type steam trap in which the valve disc can be securely attached to the inner ring valve seat and the outer ring valve seat.

上記の課題を解決するために、本発明のディスク式スチームトラップは、
入口と出口を有する本体に蓋体を固着して内部に変圧室を形成し、
前記変圧室の中心に開口する噴出孔を設けて前記入口と前記変圧室とを連通し、
前記噴出孔の外周囲に環状部を設けて、
前記噴出孔と前記環状部の間に内輪弁座を形成すると共に、
前記環状部の外周囲に外輪を形成し、
前記環状部から排出孔を設けて前記変圧室と前記出口とを連通し、
前記外輪にベローズの一端を固着し、
前記ベローズの他端に環状の可動外輪弁座を固着し、
前記内輪弁座及び前記可動外輪弁座に離着座する円板状の弁ディスクを前記変圧室に配置し、
前記ベローズの伸縮により前記可動外輪弁座が前記内輪弁座よりも下方に変位できるようにすると共に、
前記ベローズの内部に、前記可動外輪弁座から前記環状部に向かって伸び前記可動外輪弁座が前記内輪弁座よりも所定以上に下方に変位したときに前記環状部に当接するストッパ部材を設けたことを特徴とするものである。 In order to solve the above problems, the disc type steam trap of the present invention is
A lid is fixed to the main body having an inlet and an outlet to form a variable pressure chamber inside,
Providing a jet hole opening in the center of the variable pressure chamber to communicate the inlet and the variable pressure chamber;
An annular portion is provided around the outer periphery of the ejection hole,
To form the inner ring valve seat between the annular portion and the ejection hole,
Forming an outer ring on the outer periphery of the annular portion ;
A discharge hole is provided from the annular portion to communicate the variable pressure chamber and the outlet,
One end of the bellows is fixed to the outer ring,
An annular movable outer ring valve seat is fixed to the other end of the bellows,
A disc-shaped valve disk that is attached to and detached from the inner ring valve seat and the movable outer ring valve seat is disposed in the variable pressure chamber,
The movable outer ring valve seat can be displaced below the inner ring valve seat by expansion and contraction of the bellows,
Inside the bellows, it provided abutting the stopper member with the annular portion when said movable outer valve seat from extending toward the annular portion and the movable outer valve seat is displaced downward to a predetermined or higher than the inner valve seat It is characterized by that.

本発明によれば、外輪にベローズの一端を固着し、ベローズの他端に環状の可動外輪弁座を固着して、ベローズの伸縮により可動外輪弁座が内輪弁座よりも下方に変位できるようにしたことにより、閉弁時に弁ディスクが上に凸状に湾曲しても、弁ディスクが内輪弁座と可動外輪弁座に密着でき、変圧室の圧力が所定の開弁圧力に低下してから弁ディスクが内輪弁座と可動外輪弁座から離座して開弁でき、弁ディスクが内輪弁座と外輪弁座に確実に密着できるという優れた効果を奏する。また、ベローズの内部に、可動外輪弁座から環状部に向かって伸び可動外輪弁座が内輪弁座よりも所定以上に下方に変位したときに環状部に当接するストッパ部材を設けたことにより、弁ディスクが傾いた状態で可動外輪弁座に着座しても、ベローズが異常収縮することを防止でき、ベローズの損傷を防止できるという優れた効果を奏する。 According to the present invention, one end of the bellows is fixed to the outer ring , and an annular movable outer ring valve seat is fixed to the other end of the bellows so that the movable outer ring valve seat can be displaced below the inner ring valve seat by expansion and contraction of the bellows. As a result, even if the valve disc curves upwardly when the valve is closed, the valve disc can be brought into close contact with the inner ring valve seat and the movable outer ring valve seat, and the pressure in the variable pressure chamber decreases to a predetermined valve opening pressure. Therefore, the valve disc can be opened away from the inner ring valve seat and the movable outer ring valve seat, and the valve disc can be reliably brought into close contact with the inner ring valve seat and the outer ring valve seat. Further, in the interior of the bellows, the movable outer ring valve seat extends toward the annular portion from the movable outer ring valve seat is provided in contact with the stopper member to the annular portion when displaced downward to a predetermined or higher than the inner ring valve seat, Even if the valve disc is tilted and seated on the movable outer ring valve seat, the bellows can be prevented from abnormally contracting, and the bellows can be prevented from being damaged.

本発明の実施の形態に係わるディスク式スチームトラップの断面図である。It is sectional drawing of the disk type steam trap concerning embodiment of this invention.

以下、本発明の実施の形態について、図１を参照して説明する。本体１に蓋体２をねじ結合して内部に変圧室３を形成する。本体１に入口４と出口５をほぼ同一軸上に形成する。本体１に変圧室３の中心に開口する噴出孔６を開け、噴出孔６を介して入口４と変圧室３を連通する。噴出孔６の外周囲に環状部８を設けて、噴出孔６と環状部８の間に環状の内輪弁座９を形成し、環状部８の外周囲に内輪弁座９と同心円状の環状の外輪１０を形成する。環状部８の終端を排出孔７を介して出口５に連通する。内輪弁座９に離着座して開閉弁を行う円板状の弁ディスク１１を変圧室３内に自由状態で配置する。 Hereinafter, an embodiment of the present invention will be described with reference to FIG. A lid 2 is screwed to the main body 1 to form a variable pressure chamber 3 therein. An inlet 4 and an outlet 5 are formed on the main body 1 on substantially the same axis. The main body 1 is provided with a jet hole 6 that opens at the center of the variable pressure chamber 3, and the inlet 4 and the variable pressure chamber 3 are communicated with each other through the jet hole 6. An annular portion 8 is provided on the outer periphery of the ejection hole 6, an annular inner ring valve seat 9 is formed between the ejection hole 6 and the annular portion 8, and an annular ring concentric with the inner ring valve seat 9 is formed on the outer periphery of the annular portion 8. The outer ring 10 is formed. The end of the annular portion 8 is communicated with the outlet 5 through the discharge hole 7. A disc-shaped valve disk 11 that opens and closes to the inner ring valve seat 9 and opens and closes the valve is disposed in the variable pressure chamber 3 in a free state.

外輪１０の上端に円筒形状のベローズ１２の一端（下端）を溶接により固着すると共に、ベローズ１２の他端（上端）に内輪弁座９の外周面より大きい内周面を有する環状の可動外輪弁座１３をその軸方向に変位自在に溶接により固着する。可動外輪弁座１３の上端はベローズ１２の伸縮により内輪弁座９の上端よりも下方に変位できる。可動外輪弁座１３の下面には円筒形状のストッパ部材１４が一体に設けられている。ストッパ部材１４はベローズ１２の内部を可動外輪弁座１３から環状部８に向かって伸び可動外輪弁座１３が内輪弁座９の上端よりも所定以上に下方に変位したときに環状部８に当接する。 One end of the bellows 12 of the cylindrical on the upper end of the outer ring 10 (the lower end) is fixed by welding, an annular movable outer ring to have a peripheral surface greater than the inner peripheral surface of the inner ring valve seat 9 at the other end of the bellows 12 (the upper end) The valve seat 13 is fixed by welding so as to be displaceable in the axial direction. The upper end of the movable outer ring valve seat 13 can be displaced below the upper end of the inner ring valve seat 9 by the expansion and contraction of the bellows 12. A cylindrical stopper member 14 is integrally provided on the lower surface of the movable outer ring valve seat 13. Stopper member 14 against the annular portion 8 when the movable outer ring valve seat 13 extends toward the interior of the bellows 12 from the movable outer ring valve seat 13 in the annular portion 8 is displaced downward to a predetermined or higher than the upper end of the inner ring valve seat 9 Touch.

上記実施例の作動を説明する。変圧室３内に蒸気が滞留していない場合、噴出孔６を介して弁ディスク１１に作用する入口４側の流体圧力により、弁ディスク１１は内輪弁座９と可動外輪弁座１３から離座して低温復水を環状部８と排出孔７を介して出口５へ排出する。 The operation of the above embodiment will be described. When steam does not stay in the variable pressure chamber 3, the valve disk 11 is separated from the inner ring valve seat 9 and the movable outer ring valve seat 13 by the fluid pressure on the inlet 4 side acting on the valve disk 11 through the ejection hole 6. Then, the low-temperature condensate is discharged to the outlet 5 through the annular portion 8 and the discharge hole 7.

復水が排出されて変圧室３内に蒸気が流入してくると、変圧室３内の圧力が上昇すると共に、弁ディスク１１下面を高速の蒸気が流下して静圧低下を来たすことによって、弁ディスク１１は内輪弁座９と可動外輪弁座１３に着座し密着して閉弁する。このとき、弁ディスク１１が傾いた状態で可動外輪弁座１３の一部に着座しても、ストッパ部材１４の一部が環状部８に当接することによりベローズ１２が異常収縮することを防止できる。変圧室３内の蒸気が放熱等により凝縮しその蒸気圧力が低下してくると、弁ディスク１１は湾曲度合が小さくなるが、ベローズ１２の付勢力に抗して下方に変位し、内輪弁座９と可動外輪弁座１３との密着を維持する。そして、変圧室３の圧力が所定の開弁圧力に低下してから弁ディスク１１が内輪弁座９と可動外輪弁座１３から離座して開弁する。以上のような開閉弁のサイクルを繰り返す。 When the condensate is discharged and steam flows into the variable pressure chamber 3, the pressure in the variable pressure chamber 3 rises, and high-speed steam flows down the bottom surface of the valve disk 11 to reduce the static pressure. The valve disk 11 is seated on the inner ring valve seat 9 and the movable outer ring valve seat 13 and closes tightly. At this time, even if the valve disc 11 is tilted and seated on a part of the movable outer ring valve seat 13, it is possible to prevent the bellows 12 from abnormally contracting due to a part of the stopper member 14 coming into contact with the annular portion 8. . When the steam in the variable pressure chamber 3 condenses due to heat dissipation and the steam pressure decreases, the degree of curvature of the valve disk 11 decreases, but the valve disk 11 is displaced downward against the urging force of the bellows 12, and the inner ring valve seat 9 and the movable outer ring valve seat 13 are maintained in close contact with each other. Then, after the pressure in the variable pressure chamber 3 is lowered to a predetermined valve opening pressure, the valve disk 11 is separated from the inner ring valve seat 9 and the movable outer ring valve seat 13 and is opened. The above open / close valve cycle is repeated.

本発明は、蒸気配管系に発生する復水を自動的に排出するディスク式スチームトラップに利用することができる。   The present invention can be used for a disk-type steam trap that automatically discharges condensate generated in a steam piping system.

１ 本体
２ 蓋体
３ 変圧室
４ 入口
５ 出口
６ 噴出孔
７ 排出孔
８ 環状部
９ 内輪弁座
１０ 外輪
１１ 弁ディスク
１２ ベローズ
１３ 可動外輪弁座
１４ ストッパ部材
1 body 2 the lid 3 the variable pressure chamber 4 inlet 5 outlet 6 discharge holes 7 discharge holes 8 annular portion 9 inner valve seat 10 outer ring <br/> 11 valve disc 12 the bellows 13 movable outer ring valve seat 14 stopper member

Claims (1)

入口と出口を有する本体に蓋体を固着して内部に変圧室を形成し、
前記変圧室の中心に開口する噴出孔を設けて前記入口と前記変圧室とを連通し、
前記噴出孔の外周囲に環状部を設けて、
前記噴出孔と前記環状部の間に内輪弁座を形成すると共に、
前記環状部の外周囲に外輪を形成し、
前記環状部から排出孔を設けて前記変圧室と前記出口とを連通し、
前記外輪にベローズの一端を固着し、
前記ベローズの他端に環状の可動外輪弁座を固着し、
前記内輪弁座及び前記可動外輪弁座に離着座する円板状の弁ディスクを前記変圧室に配置し、
前記ベローズの伸縮により前記可動外輪弁座が前記内輪弁座よりも下方に変位できるようにすると共に、
前記ベローズの内部に、前記可動外輪弁座から前記環状部に向かって伸び前記可動外輪弁座が前記内輪弁座よりも所定以上に下方に変位したときに前記環状部に当接するストッパ部材を設けたこと
を特徴とするディスク式スチームトラップ。
A lid is fixed to the main body having an inlet and an outlet to form a variable pressure chamber inside,
Providing a jet hole opening in the center of the variable pressure chamber to communicate the inlet and the variable pressure chamber;
An annular portion is provided around the outer periphery of the ejection hole,
To form the inner ring valve seat between the annular portion and the ejection hole,
Forming an outer ring on the outer periphery of the annular portion ;
A discharge hole is provided from the annular portion to communicate the variable pressure chamber and the outlet,
One end of the bellows is fixed to the outer ring,
An annular movable outer ring valve seat is fixed to the other end of the bellows,
A disc-shaped valve disk that is attached to and detached from the inner ring valve seat and the movable outer ring valve seat is disposed in the variable pressure chamber,
The movable outer ring valve seat can be displaced below the inner ring valve seat by expansion and contraction of the bellows,
Inside the bellows, it provided abutting the stopper member with the annular portion when said movable outer valve seat from extending toward the annular portion and the movable outer valve seat is displaced downward to a predetermined or higher than the inner valve seat A disc type steam trap characterized by that.
JP2009167075A 2009-07-15 2009-07-15 Disc type steam trap Expired - Fee Related JP5431048B2 (en)

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Application Number Priority Date Filing Date Title
JP2009167075A JP5431048B2 (en) 2009-07-15 2009-07-15 Disc type steam trap

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JP2011021682A JP2011021682A (en) 2011-02-03
JP5431048B2 true JP5431048B2 (en) 2014-03-05

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012107650A (en) * 2010-11-15 2012-06-07 Tlv Co Ltd Disk type steam trap

Family Cites Families (3)

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JPS5145692Y2 (en) * 1973-05-29 1976-11-05
JP4536270B2 (en) * 2001-01-16 2010-09-01 株式会社テイエルブイ Disc type steam trap
JP2006170319A (en) * 2004-12-15 2006-06-29 Tlv Co Ltd Thermally-actuated steam trap

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