JP5486887B2 - Disc type steam trap - Google Patents

Disc type steam trap Download PDF

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JP5486887B2
JP5486887B2 JP2009213745A JP2009213745A JP5486887B2 JP 5486887 B2 JP5486887 B2 JP 5486887B2 JP 2009213745 A JP2009213745 A JP 2009213745A JP 2009213745 A JP2009213745 A JP 2009213745A JP 5486887 B2 JP5486887 B2 JP 5486887B2
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valve seat
outer ring
ring valve
pressure chamber
variable pressure
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JP2011064227A (en
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哲夫 浅田
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TLV Co Ltd
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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開口する環状溝を設けて、
前記噴出孔と前記環状溝の間に内輪弁座を形成すると共に、
前記環状溝の外周囲に外輪を形成し、
前記環状溝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前記環状溝を形成する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を前記外輪から前記可動外輪弁座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可動外輪弁座が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,
The inlet and communicating with said variable pressure chamber, and an annular groove that opens to the outer periphery of the ejection hole provided ejection holes opening to the center of the variable pressure chamber,
To form the inner ring valve seat between the annular groove and the ejection hole,
The outer ring is formed on the outer periphery of the annular groove,
Communicating with said outlet and said variable pressure chamber and a discharge hole provided from the annular groove,
Fixing a first end of the bellows to the outer ring,
Fixing a movable outer ring valve seat for forming the annular groove on the other end of said 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,
Together to be displaced downward from the movable outer ring valve locus inner ring valve seat by the expansion and contraction of the bellows,
Stopper member and the movable outer ring valve seat abuts when displaced downward inside to a predetermined or more than the outer wheel or al the extending toward the movable outer ring valve seat said movable outer valve locus inner ring valve seat of said bellows Is provided.

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溝を形成する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可動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、ベローズの内部を外輪から可動外輪弁座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可動外輪弁座が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, fixed to one end of the bellows to the outer ring, and fixed to the movable outer ring valve seat forming an annular groove on the other end of the bellows, the movable outer ring valve seat by the expansion and contraction of the bellows than the inner valve seat lower Therefore, even when the valve disk is curved upwardly when the valve is closed, the valve disk can be in close contact with the inner ring valve seat and the movable outer ring valve seat, and the pressure in the variable pressure chamber can be set to the predetermined valve opening pressure. Since the valve disc is separated from the inner ring valve seat and the movable outer ring valve seat, the valve disc can be opened and the valve disc can be securely brought into close contact with the inner ring valve seat and the movable outer ring valve seat. Further, the movable outer ring valve seat is provided in contact with the stopper member when the internal outer ring or al movable outer valve seat extends toward the movable outer ring valve seat of the bellows is displaced downward to a predetermined or higher than the inner ring valve seat Thus, 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の外周囲に環状溝８を設けて、噴出孔６と環状溝８の間に環状の内輪弁座９を形成し、環状溝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。環状溝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 groove 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 groove 8, and an annular ring concentric with the inner ring valve seat 9 is formed on the outer periphery of the annular groove 8. The outer ring 10 is formed. The end of the annular groove 8 communicates 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）に環状溝８を形成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。外輪１０の上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の内部を外輪１０から可動外輪弁座１３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可動外輪弁座１３が当接する。 One end (lower end) of a cylindrical bellows 12 is fixed to the upper end of the outer ring 10 by welding, and an annular movable outer ring valve seat 13 that forms an annular groove 8 at the other end (upper end) of the bellows 12 is displaced in its axial direction. Freely fixed by welding. 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 upper surface of the outer ring 10 . The stopper member 14 extends inside the bellows 12 from the outer ring 10 toward the movable outer ring valve seat 13, and when the movable outer ring valve seat 13 is displaced below the upper end of the inner ring valve seat 9 by a predetermined amount or more, the movable outer ring valve seat 13 is moved. Abut.

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溝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 groove 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、可動外輪弁座１３の一部がストッパ部材１４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, the bellows 12 is abnormally contracted by a part of the movable outer ring valve seat 13 coming into contact with the stopper member 14. Can be prevented. 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 環状溝
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 DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 3 Transformer chamber 4 Inlet 5 Outlet 6 Ejection hole 7 Discharge hole 8 Annular groove 9 Inner ring valve seat 10 Outer ring 11 Valve disk 12 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開口する環状溝を設けて、
前記噴出孔と前記環状溝の間に内輪弁座を形成すると共に、
前記環状溝の外周囲に外輪を形成し、
前記環状溝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前記環状溝を形成する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を前記外輪から前記可動外輪弁座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可動外輪弁座が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,
The inlet and communicating with said variable pressure chamber, and an annular groove that opens to the outer periphery of the ejection hole provided ejection holes opening to the center of the variable pressure chamber,
To form the inner ring valve seat between the annular groove and the ejection hole,
The outer ring is formed on the outer periphery of the annular groove,
Communicating with said outlet and said variable pressure chamber and a discharge hole provided from the annular groove,
Fixing a first end of the bellows to the outer ring,
Fixing a movable outer ring valve seat for forming the annular groove on the other end of said 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,
Together to be displaced downward from the movable outer ring valve locus inner ring valve seat by the expansion and contraction of the bellows,
Stopper member and the movable outer ring valve seat abuts when displaced downward inside to a predetermined or more than the outer wheel or al the extending toward the movable outer ring valve seat said movable outer valve locus inner ring valve seat of said bellows Disc type steam trap characterized by having provided.
JP2009213745A 2009-09-15 2009-09-15 Disc type steam trap Expired - Fee Related JP5486887B2 (en)

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JP2009213745A JP5486887B2 (en) 2009-09-15 2009-09-15 Disc type steam trap

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Application Number Priority Date Filing Date Title
JP2009213745A JP5486887B2 (en) 2009-09-15 2009-09-15 Disc type steam trap

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JP2011064227A JP2011064227A (en) 2011-03-31
JP5486887B2 true JP5486887B2 (en) 2014-05-07

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145692Y2 (en) * 1973-05-29 1976-11-05
JPS5789064U (en) * 1980-11-21 1982-06-01
JPH0662299U (en) * 1993-02-04 1994-09-02 フシマン株式会社 Thermostatic trap
JP4536270B2 (en) * 2001-01-16 2010-09-01 株式会社テイエルブイ Disc type steam trap
JP4704593B2 (en) * 2001-04-13 2011-06-15 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
JP5394134B2 (en) * 2009-06-15 2014-01-22 株式会社テイエルブイ Disc type steam trap

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