JP2022022137A - Valve heat insulation structure and valve - Google Patents

Valve heat insulation structure and valve Download PDF

Info

Publication number
JP2022022137A
JP2022022137A JP2021117797A JP2021117797A JP2022022137A JP 2022022137 A JP2022022137 A JP 2022022137A JP 2021117797 A JP2021117797 A JP 2021117797A JP 2021117797 A JP2021117797 A JP 2021117797A JP 2022022137 A JP2022022137 A JP 2022022137A
Authority
JP
Japan
Prior art keywords
valve
seat ring
heat insulating
box
valve box
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.)
Pending
Application number
JP2021117797A
Other languages
Japanese (ja)
Inventor
保浩 徳谷
Yasuhiro Tokutani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Okumura Engineering Corp OKM
Original Assignee
Okumura Engineering Corp OKM
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Okumura Engineering Corp OKM filed Critical Okumura Engineering Corp OKM
Priority to JP2021117797A priority Critical patent/JP2022022137A/en
Publication of JP2022022137A publication Critical patent/JP2022022137A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)
  • Valve Housings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a valve heat insulation structure that can insulate between a fluid passing through a flow channel and a valve drive part and prevent dew condensation at the valve drive part when the valve drive part has a low temperature, and to provide a valve.
SOLUTION: A valve heat insulation structure includes a butterfly valve 12 comprising: a valve box 14 with a projection 18 projecting from a tubular part 16; a seat ring 24 of which cylindrical part 26 is fitted into the tubular part 16 of the valve box 14; a valve element 30 disposed inside the cylindrical part 26 of the seat ring 24; a neck member 40 connected to the projection 18 of the valve box 14; a valve rod 32 of which tip in a penetration direction is fixed to the valve element 30; and a substantially ring-shaped space part 70 provided between the valve box 14 and the seat ring 24.
SELECTED DRAWING: Figure 1
COPYRIGHT: (C)2022,JPO&INPIT

Description

本願発明は、バタフライバルブ等のバルブを構成するバルブ断熱構造、及びバルブに関する。 The present invention relates to a valve heat insulating structure and a valve constituting a valve such as a butterfly valve.

従来から、流体の流れを閉鎖又は開放するためにバタフライバルブ（バルブ）が使用されている。図３に、一例として、バタフライバルブ１００を示す。バタフライバルブ１００は、弁箱１０４と、シートリング１１０と、弁体１０８と、首部材１１２と、弁棒１０６と、を備えている。弁箱１０４は、筒状部１０３と、筒状部１０３から突出する突出部１０５と、を有する。シートリング１１０は、円筒部１０９を有し、円筒部１０９が弁箱１０４の筒状部１０３内に嵌め込まれるように構成されている。弁体１０８は、シートリング１１０の円筒部１０９内に配置される。円筒部１０９の内側中空部が流路１０２を構成する。首部材１１２は、回転駆動手段や制御手段等を有するバルブ駆動部（図示しない）に固定するフランジ（固定部）１１８を有し、弁箱１０４の突出部１０５に接続するように構成されている。弁棒１０６は、首部材１１２、弁箱１０４の突出部１０５、及びシートリング１１０に回転可能に貫通され、貫通方向先端（図示しない）が弁体１０８に固定され、弁体１０８とともに回転中心Ｃ０のまわりに回転するように構成されている。シートリング１１０は、弁体１０８が当接するシート部１１４を有している。首部材１１２は、筒状部１１６の下部が弁箱１０４の突出部１０５に挿入されている。 Traditionally, butterfly valves (valves) have been used to close or open the flow of fluid. FIG. 3 shows a butterfly valve 100 as an example. The butterfly valve 100 includes a valve box 104, a seat ring 110, a valve body 108, a neck member 112, and a valve rod 106. The valve box 104 has a tubular portion 103 and a protruding portion 105 protruding from the tubular portion 103. The seat ring 110 has a cylindrical portion 109, and the cylindrical portion 109 is configured to be fitted into the tubular portion 103 of the valve box 104. The valve body 108 is arranged in the cylindrical portion 109 of the seat ring 110. The inner hollow portion of the cylindrical portion 109 constitutes the flow path 102. The neck member 112 has a flange (fixing portion) 118 for fixing to a valve driving portion (not shown) having a rotation driving means, a controlling means, and the like, and is configured to be connected to the protruding portion 105 of the valve box 104. .. The valve rod 106 is rotatably penetrated through the neck member 112, the protruding portion 105 of the valve box 104, and the seat ring 110, the tip in the penetrating direction (not shown) is fixed to the valve body 108, and the rotation center C0 together with the valve body 108. It is configured to rotate around. The seat ring 110 has a seat portion 114 with which the valve body 108 abuts. The lower portion of the tubular portion 116 of the neck member 112 is inserted into the protruding portion 105 of the valve box 104.

バタフライバルブ１００は、首部材１１２のフランジ１１８をバルブ駆動部に固定して使用する。バタフライバルブ１００は、流路１０２を通る流体が低温であると、低温が、弁体１０８、シートリング１１０、弁箱１０４及び首部材１１２の筒状部１１６を介してフランジ１１８へ伝わり、フランジ１１８を固定するバルブ駆動部へ伝わる（熱が高温側のバルブ駆動部から低温側の流体へ移動する。）。このため、バルブ駆動部が低温となり、バルブ駆動部に結露が生じる場合がある。バルブ駆動部に結露が生じると、結露の滴下により、結露が滴下した工場等の天井や壁に染みが生じる。また、結露の滴下により、バルブ駆動部の周辺の機器が、スムーズに作動できなくなり、又は、腐食を招く恐れがある。なお、バタフライバルブ自体の結露防止に関する文献が存在する（特許文献１参照。）。しかし、本願発明に関連するものはない。 The butterfly valve 100 is used by fixing the flange 118 of the neck member 112 to the valve drive unit. In the butterfly valve 100, when the fluid passing through the flow path 102 is at a low temperature, the low temperature is transmitted to the flange 118 via the valve body 108, the seat ring 110, the valve box 104 and the tubular portion 116 of the neck member 112, and the flange 118 (The heat is transferred from the valve drive on the high temperature side to the fluid on the low temperature side). Therefore, the temperature of the valve drive unit becomes low, and dew condensation may occur on the valve drive unit. When dew condensation occurs on the valve drive unit, the dripping of dew causes stains on the ceiling and walls of factories and the like where the dew drips. Further, due to the dripping of dew condensation, the equipment around the valve drive unit may not operate smoothly or may cause corrosion. There is a document relating to the prevention of dew condensation of the butterfly valve itself (see Patent Document 1). However, nothing is related to the invention of the present application.

特開平１１－２３５９号公報Japanese Unexamined Patent Publication No. 11-2359

本願発明の目的は、流路を通る流体とバルブ駆動部との間の断熱ができ、バルブ駆動部が低温となってバルブ駆動部に結露が生じるのを防止できるバルブ断熱構造及びバルブを提供することにある。 An object of the present invention is to provide a valve heat insulating structure and a valve capable of insulating between a fluid passing through a flow path and a valve driving portion and preventing the valve driving portion from becoming cold and causing dew condensation on the valve driving portion. There is something in it.

本願発明のバルブ断熱構造は、
筒状部と、該筒状部に連続する連接部と、を有する弁箱と、
円筒部を有し、該円筒部が前記弁箱の前記筒状部内に嵌め込まれたシートリングと、
前記シートリングの前記円筒部内に配置された弁体と、
バルブ駆動部に固定する固定部と、前記弁箱の連接部に直接的又は間接的に接続される接続部と、を有する首部材と、
前記首部材、前記弁箱の前記連接部、及び前記シートリングに回転可能に貫通され、貫通方向先端が前記弁体に固定された弁棒と、
を備えたバルブのバルブ断熱構造であり、
前記弁箱と、
前記シートリングと、
前記弁箱と前記シートリングとの間に設けられた略リング形状の空間部と、
から構成されたことを特徴とする。 The valve insulation structure of the present invention is
A valve box having a tubular portion and a connecting portion continuous with the tubular portion.
A seat ring having a cylindrical portion in which the cylindrical portion is fitted in the tubular portion of the valve box,
A valve body arranged in the cylindrical portion of the seat ring and
A neck member having a fixing portion fixed to the valve driving portion and a connecting portion directly or indirectly connected to the connecting portion of the valve box.
A valve rod rotatably penetrated through the neck member, the connecting portion of the valve box, and the seat ring, and the tip in the penetrating direction is fixed to the valve body.
It is a valve insulation structure of the valve equipped with
With the valve box
With the seat ring
A substantially ring-shaped space provided between the valve box and the seat ring,
It is characterized by being composed of.

また、本願発明のバルブ断熱構造は、前記バルブ断熱構造において、前記空間部内に略リング形状の断熱部材を備えたことを特徴とする。 Further, the valve heat insulating structure of the present invention is characterized in that, in the valve heat insulating structure, a substantially ring-shaped heat insulating member is provided in the space.

また、本願発明のバルブ断熱構造は、前記バルブ断熱構造において、前記断熱部材は、放射状に複数に分割されて構成されたことを特徴とする。 Further, the valve heat insulating structure of the present invention is characterized in that, in the valve heat insulating structure, the heat insulating member is radially divided into a plurality of parts.

本願発明のバルブ断熱構造は、
筒状部と、該筒状部に連続する連接部と、を有する弁箱と、
円筒部を有し、該円筒部が前記弁箱の前記筒状部内に嵌め込まれたシートリングと、
前記シートリングの前記円筒部内に配置された弁体と、
バルブ駆動部に固定する固定部と、前記弁箱の連接部に直接的又は間接的に接続される接続部と、を有する首部材と、
前記首部材、前記弁箱の前記連接部、及び前記シートリングに回転可能に貫通され、貫通方向先端が前記弁体に固定された弁棒と、
を備えたバルブのバルブ断熱構造であり、
前記弁箱と、
前記首部材と、
前記弁箱の前記連接部と前記首部材との間に介装された断熱性を有する介装部材と、
から構成されたことを特徴とする。 The valve insulation structure of the present invention is
A valve box having a tubular portion and a connecting portion continuous with the tubular portion.
A seat ring having a cylindrical portion in which the cylindrical portion is fitted in the tubular portion of the valve box,
A valve body arranged in the cylindrical portion of the seat ring and
A neck member having a fixing portion fixed to the valve driving portion and a connecting portion directly or indirectly connected to the connecting portion of the valve box.
A valve rod rotatably penetrated through the neck member, the connecting portion of the valve box, and the seat ring, and the tip in the penetrating direction is fixed to the valve body.
It is a valve insulation structure of the valve equipped with
With the valve box
With the neck member
An interstitial member having heat insulating properties interposed between the connecting portion of the valve box and the neck member,
It is characterized by being composed of.

本願発明のバルブは、
筒状部と、該筒状部に連続する連接部と、を有する弁箱と、
円筒部を有し、該円筒部が前記弁箱の前記筒状部内に嵌め込まれたシートリングと、
前記シートリングの前記円筒部内に配置された弁体と、
バルブ駆動部に固定する固定部と、前記弁箱の連接部に直接的又は間接的に接続される接続部と、を有する首部材と、
前記首部材、前記弁箱の前記連接部、及び前記シートリングに回転可能に貫通され、貫通方向先端が前記弁体に固定された弁棒と、
前記弁箱と前記シートリングとの間に設けられた略リング形状の空間部と、
を備えたことを特徴とする。 The valve of the present invention is
A valve box having a tubular portion and a connecting portion continuous with the tubular portion.
A seat ring having a cylindrical portion in which the cylindrical portion is fitted in the tubular portion of the valve box,
A valve body arranged in the cylindrical portion of the seat ring and
A neck member having a fixing portion fixed to the valve driving portion and a connecting portion directly or indirectly connected to the connecting portion of the valve box.
A valve rod rotatably penetrated through the neck member, the connecting portion of the valve box, and the seat ring, and the tip in the penetrating direction is fixed to the valve body.
A substantially ring-shaped space provided between the valve box and the seat ring,
It is characterized by being equipped with.

本願発明のバルブは、前記バルブにおいて、前記空間部内に略リング形状の断熱部材を備えたことを特徴とする。 The valve of the present invention is characterized in that the valve is provided with a substantially ring-shaped heat insulating member in the space.

本願発明のバルブは、前記バルブにおいて、前記断熱部材は、放射状に複数に分割されて構成されたことを特徴とする。 The valve of the present invention is characterized in that, in the valve, the heat insulating member is radially divided into a plurality of parts.

本願発明のバルブは、前記バルブにおいて、前記弁棒と反対方向から前記シートリングに回転可能に貫通され、貫通方向先端が前記弁体に固定された補助弁棒を備え、
前記断熱部材は、前記補助弁棒を回転可能に保持することを特徴とする。 The valve of the present invention includes an auxiliary valve rod that is rotatably penetrated into the seat ring from the direction opposite to the valve rod and the tip in the penetration direction is fixed to the valve body in the valve.
The heat insulating member is characterized in that the auxiliary valve rod is rotatably held.

本願発明のバルブは、
筒状部と、該筒状部に連続する連接部と、有する弁箱と、
円筒部を有し、該円筒部が前記弁箱の前記筒状部内に嵌め込まれたシートリングと、
前記シートリングの前記円筒部内に配置された弁体と、
バルブ駆動部に固定する固定部と、前記弁箱の連接部に直接的又は間接的に接続される接続部と、を有する首部材と、
前記首部材、前記弁箱の前記連接部、及び前記シートリングに回転可能に貫通され、貫通方向先端が前記弁体に固定された弁棒と、
前記弁箱の前記連接部と前記首部材との間に介装された断熱性を有する介装部材と、
を備えたことを特徴とする。 The valve of the present invention is
A tubular portion, a connecting portion continuous with the tubular portion, and a valve box having the tubular portion.
A seat ring having a cylindrical portion in which the cylindrical portion is fitted in the tubular portion of the valve box,
A valve body arranged in the cylindrical portion of the seat ring and
A neck member having a fixing portion fixed to the valve driving portion and a connecting portion directly or indirectly connected to the connecting portion of the valve box.
A valve rod rotatably penetrated through the neck member, the connecting portion of the valve box, and the seat ring, and the tip in the penetrating direction is fixed to the valve body.
An interstitial member having heat insulating properties interposed between the articulated portion of the valve box and the neck member,
It is characterized by being equipped with.

請求項１及び５に係る本願発明によれば、弁箱とシートリングとの間に、熱伝導率の低い空気が存在する空間部を備えるため、シートリングから弁箱に低温が伝わるのを防止できる。このため、流路の流体の低温が、シートリング、弁箱、及び首部材を介して、バルブ駆動部に伝わるのを防止できる（熱が高温側のバルブ駆動部から低温側の流体へ移動するのを防止できる。）。これにより、低温の流体とバルブ駆動部との間の断熱を行うことができ、バルブ駆動部が低温となってバルブ駆動部に結露が生じるのを防止できる。 According to the inventions of claims 1 and 5, since a space portion in which air having low thermal conductivity exists is provided between the valve box and the seat ring, it is possible to prevent low temperature from being transmitted from the seat ring to the valve box. can. Therefore, it is possible to prevent the low temperature of the fluid in the flow path from being transmitted to the valve drive unit via the seat ring, the valve box, and the neck member (heat is transferred from the valve drive unit on the high temperature side to the fluid on the low temperature side). Can be prevented.). As a result, heat insulation can be performed between the low-temperature fluid and the valve drive unit, and it is possible to prevent the valve drive unit from becoming cold and causing dew condensation on the valve drive unit.

請求項４及び９に係る本願発明のバルブ断熱構造によれば、弁箱の連接部と首部材との間に、断熱性を有する介装部材を備えているため、流体の低温は、連接部から首部材へ、伝わり難くなる。このため、流体の低温が弁箱及び首部材を介してバルブ駆動部に、伝わり難くなり、低温の流体とバルブ駆動部との間の断熱を行うことができ、バルブ駆動部に結露が生じるのを防止できる。 According to the valve heat insulating structure of the present invention according to claims 4 and 9, since an interstitial member having heat insulating properties is provided between the connecting portion of the valve box and the neck member, the low temperature of the fluid is kept at the connecting portion. It becomes difficult to transmit from to the neck member. Therefore, the low temperature of the fluid is difficult to be transmitted to the valve drive portion through the valve box and the neck member, heat insulation can be performed between the low temperature fluid and the valve drive portion, and dew condensation occurs on the valve drive portion. Can be prevented.

本願発明に係るバルブ断熱構造及びバルブを示す正面断面図である。It is a front sectional view which shows the valve insulation structure and a valve which concerns on this invention. 図１に示すバルブを組み立てる状態を示す斜視図である。It is a perspective view which shows the state of assembling the valve shown in FIG. 従来のバルブを示す斜視図である。It is a perspective view which shows the conventional valve.

本願発明に係るバルブ断熱構造及びバタフライバルブ（バルブ）の実施形態について図面に基づいて説明する。図１及び図２において、符号１０及び１１は、本願発明に係るバルブ断熱構造であり、符号１２は本願発明に係るバルブである。以下、バルブ断熱構造１０、１１及びバタフライバルブ１２について、図１及び図２に基づいて説明する。 An embodiment of a valve heat insulating structure and a butterfly valve (valve) according to the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numerals 10 and 11 are valve insulation structures according to the present invention, and reference numeral 12 is a valve according to the present invention. Hereinafter, the valve insulation structures 10 and 11 and the butterfly valve 12 will be described with reference to FIGS. 1 and 2.

（構成）
（弁箱１４）
バタフライバルブ１２は、筒状部１６と、筒状部１６に連続して筒状部１６から突出し、中空部７６を有する突出部（連接部）１８と、を有する弁箱１４を備える。弁箱１４は、弁箱構成部品１４（１）及び１４（２）をボルト２０及びナット２２によって連結して形成される。弁箱１４は、アルミニウム（純アルミ又はアルミ合金）から形成される。弁箱１４は、アルミニウム以外の金属から形成されてもよい。 (Constitution)
(Valve box 14)
The butterfly valve 12 includes a valve box 14 having a tubular portion 16 and a protruding portion (connecting portion) 18 that is continuous with the tubular portion 16 and protrudes from the tubular portion 16 and has a hollow portion 76. The valve box 14 is formed by connecting the valve box components 14 (1) and 14 (2) with bolts 20 and nuts 22. The valve box 14 is made of aluminum (pure aluminum or an aluminum alloy). The valve box 14 may be made of a metal other than aluminum.

（シートリング２４及び流路２７）
バタフライバルブ１２は、円筒部２６を有し、円筒部２６が弁箱１４の筒状部１６内に嵌め込まれるシートリング２４を備える。シートリング２４は、ゴム又は樹脂から形成される。シートリング２４は、例えば、ＥＰＤＭ（エチレンプロピレンゴム）又はＮＢＲ（ニトリゴム）から形成され、他のゴム又は樹脂から形成されてもよい。シートリング２４は、Ｙ軸方向（流路方向）において、後述の断熱部材５８を挟持する２個の膨出部２５を備える。シートリング２４は、後述の弁体３０が当接されるシート部２８を有している。シート部２８は、円筒部２６の内面２６Ｉから突出し、湾曲した帯状である。シート部２８の断面形状は、特に限定されない。円筒部２６の内側中空部は、流路２７を構成する。 (Seat ring 24 and flow path 27)
The butterfly valve 12 has a cylindrical portion 26 and includes a seat ring 24 into which the cylindrical portion 26 is fitted into the tubular portion 16 of the valve box 14. The seat ring 24 is made of rubber or resin. The sheet ring 24 is formed of, for example, EPDM (ethylene propylene rubber) or NBR (nitron rubber), and may be formed of another rubber or resin. The seat ring 24 includes two bulging portions 25 that sandwich the heat insulating member 58 described later in the Y-axis direction (flow path direction). The seat ring 24 has a seat portion 28 to which the valve body 30 described later is abutted. The sheet portion 28 protrudes from the inner surface 26I of the cylindrical portion 26 and has a curved strip shape. The cross-sectional shape of the sheet portion 28 is not particularly limited. The inner hollow portion of the cylindrical portion 26 constitutes the flow path 27.

（弁体３０）
バタフライバルブ１２は、シートリング２４の円筒部２６内に配置された弁体３０を備える。弁体３０は、略円盤形状又は略円板形状である。弁体３０は、ステンレスから形成される。弁体３０は、ステンレス以外の金属から形成されてもよい。弁体３０は、後述の弁棒３２を挿入して固定する固定穴３４と、後述の補助弁棒３６を挿入して固定する固定穴３８と、を備えている。 (Valve body 30)
The butterfly valve 12 includes a valve body 30 arranged in the cylindrical portion 26 of the seat ring 24. The valve body 30 has a substantially disk shape or a substantially disk shape. The valve body 30 is made of stainless steel. The valve body 30 may be made of a metal other than stainless steel. The valve body 30 includes a fixing hole 34 for inserting and fixing the valve rod 32 described later, and a fixing hole 38 for inserting and fixing the auxiliary valve rod 36 described later.

（首部材４０）
バタフライバルブ１２は、ボルト（図示しない）によって、バルブ駆動部４６に固定するフランジ（固定部）４２と、弁箱１４の突出部１８に間接的に接続される円筒状の接続部４４と、を有する首部材４０を備える。首部材４０は、アルミニウムから形成され、アルミニウム以外の金属から形成されてもよい。バルブ駆動部４６は、弁体３０及び後述の弁棒３２を回転駆動させるための回転駆動手段や制御手段等を有している。バルブ駆動部４６は、レバー式、ギヤー式、シリンダ式、電動式等の公知のものが用いられる。接続部４４は、後述の介装部材４８を介して、弁箱１４の突出部１８にボルト７８によって固定される。フランジ４２は、熱伝導率の低い空気が存在する空間４３が設けられている。空間４３は、結果的に、フランジ４２とバルブ駆動部４６との断熱効果を向上させることができる。 (Neck member 40)
The butterfly valve 12 has a flange (fixing portion) 42 fixed to the valve driving portion 46 by a bolt (not shown), and a cylindrical connecting portion 44 indirectly connected to the protruding portion 18 of the valve box 14. The neck member 40 is provided. The neck member 40 is made of aluminum and may be made of a metal other than aluminum. The valve drive unit 46 has a rotation drive means, a control means, and the like for rotationally driving the valve body 30 and the valve rod 32 described later. As the valve drive unit 46, known ones such as a lever type, a gear type, a cylinder type, and an electric type are used. The connecting portion 44 is fixed to the protruding portion 18 of the valve box 14 by a bolt 78 via an interposing member 48 described later. The flange 42 is provided with a space 43 in which air having a low thermal conductivity exists. As a result, the space 43 can improve the heat insulating effect between the flange 42 and the valve drive unit 46.

（弁棒３２）
バタフライバルブ１２は、首部材４０、後述の介装部材４８、弁箱１４、及びシートリング２４に回転可能に貫通され、貫通方向先端５２が弁体３０に固定された弁棒３２を備える。弁棒３２は、ステンレスから形成され、ステンレスの金属から形成されてもよい。弁棒３２は、貫通方向後端５４が、回転駆動手段によって回転させられる回転軸５６に固定される。回転軸５６、弁棒３２及び弁体３０は、バルブ駆動部４６によって、一体的に、弁箱１４、及びシートリング２４等に対して、回転中心Ｃ１のまわりに回転する。弁棒３２は、熱伝導率の低い空気が存在する中空部５５を有する。弁棒３２と回転軸５６との断熱のためである。 (Valve rod 32)
The butterfly valve 12 includes a valve rod 32 rotatably penetrated by a neck member 40, an interposing member 48 described later, a valve box 14, and a seat ring 24, and a penetration direction tip 52 is fixed to a valve body 30. The valve stem 32 is made of stainless steel and may be made of stainless metal. The valve rod 32 has a through-direction rear end 54 fixed to a rotation shaft 56 rotated by a rotation drive means. The rotary shaft 56, the valve rod 32, and the valve body 30 are integrally rotated around the rotation center C1 with respect to the valve box 14, the seat ring 24, and the like by the valve drive unit 46. The valve stem 32 has a hollow portion 55 in which air having a low thermal conductivity is present. This is for heat insulation between the valve rod 32 and the rotating shaft 56.

（空間部７０及び断熱部材５８）
バタフライバルブ１２は、弁箱１４の筒状部１６とシートリング２４の円筒部２６との間に設けられた略リング形状の空間部７０を備える。バタフライバルブ１２は、筒状部１６と円筒部２６との間の空間部７０内に略リング形状の断熱部材５８を備える。断熱部材５８は、断熱性を有する樹脂から形成され、例えばＰＯＭ（ポリアセタール）から形成され、ＰＯＭ以外の断熱性を有する樹脂から形成されてもよい。断熱部材５８は、弁箱１４の筒状部１６とシートリング２４の円筒部２６との間に挟持され、シートリング２４の２個の膨出部２５の間に挟持される。断熱部材５８は、断熱部材構成部品５８（１）、５８（２）、５８（３）及び５８（４）が組み合わされて構成される。断熱部材構成部品５８（１）、５８（２）、５８（３）及び５８（４）が、時計回りに配置され組み合わされることにより、略リング形状を構成する。すなわち、断熱部材５８は、放射状に、断熱部材構成部品５８（１）、５８（２）、５８（３）及び５８（４）の４個に分割されて構成されている。断熱部材構成部品５８（１）、５８（２）、５８（３）及び５８（４）は、各々、シートリング２４の円筒部２６に接触する接触板５７と、接触板５７から弁箱１４へ向かって膨出する複数枚の円弧状の膨出部５９と、接触板５７及び相対向する２枚の膨出部５９に連続する複数枚のフィン６１とを、備える。複数枚の膨出部５９の中の相対向する２枚と、複数枚のフィン６１の中の相対向する２枚と、によって囲まれる空間（部材は存在しない）が複数個形成される。この空間の各々には、熱伝導率の低い空気を存在させることができる。 (Space 70 and heat insulating member 58)
The butterfly valve 12 includes a substantially ring-shaped space portion 70 provided between the tubular portion 16 of the valve box 14 and the cylindrical portion 26 of the seat ring 24. The butterfly valve 12 includes a substantially ring-shaped heat insulating member 58 in a space 70 between the cylindrical portion 16 and the cylindrical portion 26. The heat insulating member 58 is formed of a resin having a heat insulating property, for example, is formed of POM (polyacetal), and may be formed of a resin having a heat insulating property other than POM. The heat insulating member 58 is sandwiched between the tubular portion 16 of the valve box 14 and the cylindrical portion 26 of the seat ring 24, and is sandwiched between the two bulging portions 25 of the seat ring 24. The heat insulating member 58 is composed of a combination of heat insulating member components 58 (1), 58 (2), 58 (3) and 58 (4). The heat insulating member components 58 (1), 58 (2), 58 (3) and 58 (4) are arranged clockwise and combined to form a substantially ring shape. That is, the heat insulating member 58 is radially divided into four heat insulating member components 58 (1), 58 (2), 58 (3) and 58 (4). The heat insulating member components 58 (1), 58 (2), 58 (3) and 58 (4) are the contact plate 57 in contact with the cylindrical portion 26 of the seat ring 24 and the contact plate 57 to the valve box 14, respectively. A plurality of arcuate bulging portions 59 that bulge toward each other, and a plurality of fins 61 that are continuous with the contact plate 57 and the two facing bulging portions 59 are provided. A plurality of spaces (no members exist) are formed, which are surrounded by two facing pieces in the plurality of bulging portions 59 and two facing pieces in the plurality of fins 61. Air with low thermal conductivity can be present in each of these spaces.

断熱部材構成部品５８（１）は、弁棒３２が挿入される孔６２が設けられている。断熱部材構成部品５８（１）は、弁箱１４の筒状部１６とシートリング２４の円筒部２６との間に挟持され、弁棒３２が孔６２に挿入され、シートリング２４の２個の膨出部２５によって挟持されることにより、弁箱１４等に対するＸＹＺ方向の移動が規制される。断熱部材構成部品５８（３）は、後述の補助弁棒３６が挿入される穴６４が設けられている。なお、本願明細書において、貫通するものを「孔」と言い、貫通しないで底面を有するものを「穴」と言う。断熱部材構成部品５８（３）の中の穴６４は、補助弁棒３６を回転可能に保持する。断熱部材構成部品５８（３）は、弁箱１４の筒状部１６とシートリング２４の円筒部２６との間に挟持され、補助弁棒３６が穴６４に挿入され、シートリング２４の２個の膨出部２５によって挟持されることにより、弁箱１４等に対するＸＹＺ方向の移動が規制される。 The heat insulating member component 58 (1) is provided with a hole 62 into which the valve rod 32 is inserted. The heat insulating member component 58 (1) is sandwiched between the tubular portion 16 of the valve box 14 and the cylindrical portion 26 of the seat ring 24, the valve rod 32 is inserted into the hole 62, and the two seat rings 24 are inserted. By being sandwiched by the bulging portion 25, the movement in the XYZ direction with respect to the valve box 14 and the like is restricted. The heat insulating member component 58 (3) is provided with a hole 64 into which the auxiliary valve rod 36 described later is inserted. In the specification of the present application, a penetrating object is referred to as a "hole", and a penetrating object having a bottom surface is referred to as a "hole". The hole 64 in the heat insulating member component 58 (3) rotatably holds the auxiliary valve rod 36. The heat insulating member component 58 (3) is sandwiched between the tubular portion 16 of the valve box 14 and the cylindrical portion 26 of the seat ring 24, the auxiliary valve rod 36 is inserted into the hole 64, and the two seat rings 24 are inserted. By being sandwiched by the bulging portion 25 of the valve box 14, the movement in the XYZ direction with respect to the valve box 14 and the like is restricted.

断熱部材構成部品５８（２）及び５８（４）は、夫々、断熱部材構成部品５８（１）と断熱部材構成部品５８（３）との間に挟持される。断熱部材構成部品５８（２）及び５８（４）は、弁箱１４の筒状部１６とシートリング２４の円筒部２６との間に挟持され、シートリング２４の２個の膨出部２５によって挟持され、断熱部材構成部品５８（１）と断熱部材構成部品５８（３）との間に挟持されることにより、弁箱１４等に対するＸＹＺ方向の移動が規制される。このため、断熱部材構成部品５８（１）を、シートリング２４の円筒部２６に取り付け、断熱部材構成部品５８（３）を円筒部２６に取り付けて保持しておいて、断熱部材構成部品５８（２）及び５８（４）を断熱部材構成部品５８（１）と断熱部材構成部品５８（３）との間に挟持した状態とすることができる。この状態で、断熱部材構成部品５８（１）、５８（２）、５８（３）及び５８（４）を包み込むように、弁箱構成部品１４（１）と１４（２）とを組み合わせれば、断熱部材５８全体のシートリング２４等への取り付けが容易となる。 The heat insulating member components 58 (2) and 58 (4) are sandwiched between the heat insulating member component 58 (1) and the heat insulating member component 58 (3), respectively. The heat insulating member components 58 (2) and 58 (4) are sandwiched between the tubular portion 16 of the valve box 14 and the cylindrical portion 26 of the seat ring 24, and are sandwiched between the two bulging portions 25 of the seat ring 24. By being sandwiched between the heat insulating member component 58 (1) and the heat insulating member component 58 (3), the movement in the XYZ direction with respect to the valve box 14 and the like is restricted. Therefore, the heat insulating member component 58 (1) is attached to the cylindrical portion 26 of the seat ring 24, and the heat insulating member component 58 (3) is attached and held to the cylindrical portion 26 to hold the heat insulating member component 58 ( 2) and 58 (4) can be in a state of being sandwiched between the heat insulating member component 58 (1) and the heat insulating member component 58 (3). In this state, if the valve box components 14 (1) and 14 (2) are combined so as to wrap the heat insulating member components 58 (1), 58 (2), 58 (3) and 58 (4). , The entire heat insulating member 58 can be easily attached to the seat ring 24 or the like.

（介装部材４８）
バタフライバルブ１２は、弁箱１４の突出部１８と首部材４０の接続部４４との間に介装される介装部材４８を備える。介装部材４８は、断熱性を有する樹脂から形成される。介装部材４８は、例えば、ＰＯＭ（ポリアセタール）から形成され、ＰＯＭ以外の断熱性を有する樹脂から形成されてもよい。介装部材４８は、突出部１８と接続部４４とに挟持される被挟持部６６と、弁棒３２が挿入され、突出部１８の中空部７６に挿入される筒状部６８と、を備える。介装部材４８は、突出部１８と接続部４４とがボルト７８によって固定されることにより、被挟持部６６が突出部１８と接続部４４との間に挟持され固定される。 (Intermediate member 48)
The butterfly valve 12 includes an intervening member 48 interposed between the protruding portion 18 of the valve box 14 and the connecting portion 44 of the neck member 40. The interposing member 48 is formed of a resin having a heat insulating property. The interposing member 48 may be formed of, for example, POM (polyacetal) and may be formed of a resin having a heat insulating property other than POM. The interposing member 48 includes a held portion 66 sandwiched between the protruding portion 18 and the connecting portion 44, and a tubular portion 68 into which the valve rod 32 is inserted and inserted into the hollow portion 76 of the protruding portion 18. .. In the interposing member 48, the protruding portion 18 and the connecting portion 44 are fixed by the bolt 78, so that the sandwiched portion 66 is sandwiched and fixed between the protruding portion 18 and the connecting portion 44.

（補助弁棒３６）
バタフライバルブ１２は、弁棒３２と反対方向からシートリング２４に回転可能に貫通され、貫通方向先端８０が弁体３０に固定される補助弁棒３６を備える。補助弁棒３６は、ステンレスから形成され、ステンレス以外の金属から形成されてもよい。補助弁棒３６は、断熱部材構成部品５８（３）の穴６４に挿入され、穴６４の内周壁及び底面７４によって回転可能に保持される。 (Auxiliary valve rod 36)
The butterfly valve 12 includes an auxiliary valve rod 36 that is rotatably penetrated by the seat ring 24 from the direction opposite to the valve rod 32 and the tip 80 in the penetration direction is fixed to the valve body 30. The auxiliary valve rod 36 is made of stainless steel and may be made of a metal other than stainless steel. The auxiliary valve rod 36 is inserted into the hole 64 of the heat insulating member component 58 (3) and is rotatably held by the inner peripheral wall and the bottom surface 74 of the hole 64.

（バルブ断熱構造１０及び１１）
バルブ断熱構造１０は、バタフライバルブ１２を構成し、弁箱１４と、シートリング２４と、空間部７０と、断熱部材５８とから構成される。バルブ断熱構造１１は、バタフライバルブ１２を構成し、弁箱１４と、首部材４０と、介装部材４８とから構成される。 (Valve insulation structures 10 and 11)
The valve heat insulating structure 10 constitutes a butterfly valve 12, and is composed of a valve box 14, a seat ring 24, a space portion 70, and a heat insulating member 58. The valve heat insulating structure 11 constitutes a butterfly valve 12, and is composed of a valve box 14, a neck member 40, and an interposing member 48.

（作用及び効果）
本願発明のバタフライバルブ１２の流路２７を流れる流体と、バルブ駆動部４６と、の間の断熱の作用及び効果について、以下に説明する。バタフライバルブ１２の場合、流路２７に低温の流体が流れることにより、流路２７を流れる流体の低温は、流体の接触面積の大きなシートリング２４の円筒部２６に伝わる（熱は高温側の円筒部２６から低温側の流体へ移動する。）。これにより、低温は円筒部２６の外周面に伝わる。 (Action and effect)
The action and effect of heat insulation between the fluid flowing through the flow path 27 of the butterfly valve 12 of the present invention and the valve drive unit 46 will be described below. In the case of the butterfly valve 12, the low temperature of the fluid flowing through the flow path 27 is transmitted to the cylindrical portion 26 of the seat ring 24 having a large contact area of the fluid (heat is transferred to the cylinder on the high temperature side). It moves from the part 26 to the fluid on the low temperature side.) As a result, the low temperature is transmitted to the outer peripheral surface of the cylindrical portion 26.

ここで、弁箱１４の筒状部１６とシートリング２４の円筒部２６との間には、空間部７０が存在する。空間部７０内の空気の熱伝導率は低いため、円筒部２６の外周面の低温は、空間部７０を通って筒状部１６に伝わり難くなる（高温側の筒状部１６から低温側の円筒部２６へ熱が移動し難くなる。）。また、空間部７０内では、円筒部２６の外周面と断熱部材５８との隙間に沿って、より低温の空気は下部へ移動し、より高温の空気は、弁箱１４の上部の突出部１８に近接する上部へ移動する。このため、低温は、突出部１８に伝わり難くなり、突出部１８に近接する首部材４０に伝わり難くなる（突出部１８と首部材４０との間には、介装部材４８が存在するが、介装部材４８の作用及び効果は後述する。）。これにより、低温は、首部材４０のフランジ４２に伝わり難くなり、フランジ４２に接するバルブ駆動部４６に伝わり難くなる。さらに、フランジ４２は、フランジ４２とバルブ駆動部４６との断熱効果を向上させるために、熱伝導率の低い空気が存在する空間４３が設けられている。このため、バルブ駆動部４６がバタフライバルブ１２の上に位置する場合、低温が、フランジ４２からバルブ駆動部４６に伝わることはない（高温側のバルブ駆動部４６から低温側のフランジ４２に熱が移動することはない。）。本願発明によれば、上述のような作用により、低温の流体とバルブ駆動部４６との間の断熱を行うことができ、バルブ駆動部４６が低温となってバルブ駆動部４６に結露が生じるのを防止できる。 Here, a space portion 70 exists between the tubular portion 16 of the valve box 14 and the cylindrical portion 26 of the seat ring 24. Since the thermal conductivity of the air in the space portion 70 is low, the low temperature on the outer peripheral surface of the cylindrical portion 26 is difficult to be transmitted to the tubular portion 16 through the space portion 70 (from the tubular portion 16 on the high temperature side to the low temperature side). It becomes difficult for heat to transfer to the cylindrical portion 26). Further, in the space portion 70, the lower temperature air moves to the lower portion along the gap between the outer peripheral surface of the cylindrical portion 26 and the heat insulating member 58, and the higher temperature air moves to the lower portion, and the higher temperature air is transferred to the upper protruding portion 18 of the valve box 14. Move to the top close to. Therefore, the low temperature is difficult to be transmitted to the protruding portion 18 and is difficult to be transmitted to the neck member 40 close to the protruding portion 18 (although there is an interposing member 48 between the protruding portion 18 and the neck member 40, The actions and effects of the interposing member 48 will be described later). As a result, the low temperature is less likely to be transmitted to the flange 42 of the neck member 40, and is less likely to be transmitted to the valve drive unit 46 in contact with the flange 42. Further, the flange 42 is provided with a space 43 in which air having a low thermal conductivity exists in order to improve the heat insulating effect between the flange 42 and the valve drive unit 46. Therefore, when the valve drive unit 46 is located above the butterfly valve 12, low temperature is not transmitted from the flange 42 to the valve drive unit 46 (heat is transferred from the high temperature side valve drive unit 46 to the low temperature side flange 42). It will not move.) According to the present invention, by the above-mentioned action, heat insulation can be performed between the low temperature fluid and the valve drive unit 46, the temperature of the valve drive unit 46 becomes low, and dew condensation occurs on the valve drive unit 46. Can be prevented.

また、本願発明によれば、低温の流体とバルブ駆動部４６との間の断熱を行うことができるため、低温の流体とバルブ駆動部４６との間で断熱を行うために、バタフライバルブを熱伝導率の低いステンレスから形成する必要がない。このため、バタフライバルブを、高価で高重量なステンレスとは異なるアルミ等から形成できる。このため、バタフライバルブのコストを低減でき、製造が容易となる。 Further, according to the present invention, since it is possible to insulate between the low temperature fluid and the valve drive unit 46, the butterfly valve is heated in order to insulate between the low temperature fluid and the valve drive unit 46. It does not need to be made of stainless steel with low conductivity. Therefore, the butterfly valve can be formed of aluminum or the like, which is different from expensive and heavy stainless steel. Therefore, the cost of the butterfly valve can be reduced and the manufacturing becomes easy.

また、弁箱１４の筒状部１６とシートリング２４の円筒部２６との間の空間部７０に断熱部材５８を備えているため、空間部７０内に、熱伝導率の低い空気層及び熱伝導率の低い断熱部材層の２層が存在する。これにより、円筒部２６の外周面の低温は、弁箱１４を介してバルブ駆動部４６へ、より伝わり難くなる。また、異なる物体間の熱伝達による熱損失により、円筒部２６の外周面の低温は、弁箱１４を介してバルブ駆動部４６へ、より伝わり難くなる。これにより、流路２７の低温の流体とバルブ駆動部４６との間の断熱を行うという上記本願発明の効果が顕著に生じる。 Further, since the heat insulating member 58 is provided in the space 70 between the tubular portion 16 of the valve box 14 and the cylindrical portion 26 of the seat ring 24, an air layer having low thermal conductivity and heat are provided in the space 70. There are two layers of heat insulating member with low conductivity. As a result, the low temperature on the outer peripheral surface of the cylindrical portion 26 is less likely to be transmitted to the valve drive portion 46 via the valve box 14. Further, due to heat loss due to heat transfer between different objects, the low temperature on the outer peripheral surface of the cylindrical portion 26 becomes more difficult to be transmitted to the valve drive portion 46 via the valve box 14. As a result, the effect of the present invention of providing heat insulation between the low-temperature fluid in the flow path 27 and the valve driving unit 46 is remarkably generated.

また、本願発明によれば、弁箱１４の突出部１８と首部材４０の接続部４４との間に、断熱性を有する介装部材４８を備えているため、低温は、突出部１８から接続部４４へ、より伝わり難くなる。また、異なる物体間の熱伝達による熱損失により、低温は、突出部１８から接続部４４へ、より伝わり難くなる。このため、流路２７の低温が弁箱１４及び首部材４０を介してバルブ駆動部４６に、より伝わり難くなり、流路２７の低温の流体とバルブ駆動部４６との間の断熱を行うという本願発明の効果がより顕著に生じる。また、本願発明によれば、空間部７０と断熱部材５８と介装部材４８との相乗効果により、流路２７の低温の流体とバルブ駆動部４６との間の断熱を行うという本願発明の効果が、更に顕著に生じる。 Further, according to the present invention, since the interposing member 48 having a heat insulating property is provided between the protruding portion 18 of the valve box 14 and the connecting portion 44 of the neck member 40, the low temperature is connected from the protruding portion 18. It becomes more difficult to convey to the part 44. Further, due to heat loss due to heat transfer between different objects, it becomes more difficult for the low temperature to be transmitted from the protrusion 18 to the connection portion 44. Therefore, the low temperature of the flow path 27 becomes more difficult to be transmitted to the valve drive unit 46 via the valve box 14 and the neck member 40, and the low temperature fluid of the flow path 27 and the valve drive unit 46 are insulated from each other. The effect of the present invention is more remarkable. Further, according to the present invention, the effect of the present invention is that the low temperature fluid of the flow path 27 and the valve drive portion 46 are insulated from each other by the synergistic effect of the space portion 70, the heat insulating member 58, and the interposing member 48. However, it occurs more prominently.

なお、弁棒３２は、熱伝導率の低い空気が存在する中空部５５を有し、長くて断面積小さいため、流路２７の流体の低温が、弁体３０から弁棒３２を介してバルブ駆動部４６に伝わることは、殆どない。また、弁体３０を介して補助弁棒３６に伝わった低温は、断熱部材構成部品５８（３）の穴６４の付近によって遮断され、弁箱１４に伝わることはなく、弁体３０から補助弁棒３６に伝わった低温が、弁箱１４等を介してバルブ駆動部４６に伝わることはない。 Since the valve rod 32 has a hollow portion 55 in which air having a low thermal conductivity is present and is long and has a small cross-sectional area, the low temperature of the fluid in the flow path 27 is transmitted from the valve body 30 to the valve via the valve rod 32. It is hardly transmitted to the drive unit 46. Further, the low temperature transmitted to the auxiliary valve rod 36 via the valve body 30 is blocked by the vicinity of the hole 64 of the heat insulating member component 58 (3) and is not transmitted to the valve box 14, and is transmitted from the valve body 30 to the auxiliary valve. The low temperature transmitted to the rod 36 is not transmitted to the valve drive unit 46 via the valve box 14 or the like.

以上、本願発明の実施形態について説明したが、本願発明は上述の実施形態に限定されず、同一の作用及び効果が生じる範囲で適宜変更を加えて実施できる。例えば、本願発明のバルブは、バタフライバルブに限定されず、低温流体が使用されるバルブであれば、バルブの種類は限定されない。また、本願発明のバタフライバルブには、一軸偏心、二軸偏心及び三軸偏心のものが含まれる。また、本願発明を構成する断熱部材は、４個に分割されて構成されることに限定されず、一体で構成されてもよく、２個、３個又は５個以上に分割されて構成されてもよい。 Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can be appropriately modified as long as the same action and effect are produced. For example, the valve of the present invention is not limited to the butterfly valve, and the type of the valve is not limited as long as it is a valve in which a low temperature fluid is used. Further, the butterfly valve of the present invention includes uniaxial eccentricity, biaxial eccentricity and triaxial eccentricity. Further, the heat insulating member constituting the present invention is not limited to being divided into four, and may be integrally formed, or may be divided into two, three, or five or more. May be good.

１０、１１：バルブ断熱構造
１２：バタフライバルブ（バルブ）
１４：弁箱
１４（１）：１４（２）：弁箱構成部品
１６：筒状部
１８：突出部（連接部）
２４：シートリング
２５：膨出部
２６：円筒部
２６Ｉ：内面
２７：流路
２８：シート部
３０：弁体
３２：弁棒
３６：補助弁棒
４０：首部材
４２：フランジ（固定部）
４３：空間
４４：接続部
４６：バルブ駆動部
４８：介装部材
５５：中空部
５６：回転軸
５７：接触板
５８：断熱部材
５８（１）、５８（２）、５８（３）、５８（４）：断熱部材構成部品
５９：膨出部
６１：フィン
６６：被挟持部
６８：筒状部
７０：空間部
７４：底面
Ｃ１：回転中心 10, 11: Valve insulation structure 12: Butterfly valve (valve)
14: Valve box 14 (1): 14 (2): Valve box component 16: Cylindrical part 18: Protruding part (connecting part)
24: Seat ring 25: Swelling part 26: Cylindrical part 26I: Inner surface 27: Flow path 28: Seat part 30: Valve body 32: Valve rod 36: Auxiliary valve rod 40: Neck member 42: Flange (fixed part)
43: Space 44: Connection part 46: Valve drive part 48: Intermediary member 55: Hollow part 56: Rotating shaft 57: Contact plate 58: Insulation member 58 (1), 58 (2), 58 (3), 58 ( 4): Insulation member component 59: bulging portion 61: fin 66: sandwiched portion 68: tubular portion 70: space portion 74: bottom surface C1: rotation center

Claims (7)

筒状部を有する弁箱と、
円筒部を具備し、該円筒部が前記弁箱の筒状部内に配置されるシートリングと、
前記シートリングの円筒部内に配置される弁体と、を備えたバルブのバルブ断熱構造であって、
前記シートリングの円筒部の外径寸法を、前記弁箱の筒状部の内径寸法よりも小さくして、前記シートリングの円筒部の外周面と前記弁箱の筒状部の内周面との間が離間しており、
前記バルブ断熱構造が、
前記シートリングの円筒部の外周面と前記弁箱の筒状部の内周面との間に形成された略リング形状の空間部を備えることを特徴とするバルブ断熱構造。 A valve box with a tubular part and
A seat ring provided with a cylindrical portion, wherein the cylindrical portion is arranged in the tubular portion of the valve box.
A valve insulation structure for a valve including a valve body arranged in a cylindrical portion of the seat ring.
The outer diameter of the cylindrical portion of the seat ring is made smaller than the inner diameter of the cylindrical portion of the valve box so that the outer peripheral surface of the cylindrical portion of the seat ring and the inner peripheral surface of the tubular portion of the valve box are formed. There is a gap between them,
The valve insulation structure
A valve heat insulating structure comprising a substantially ring-shaped space formed between an outer peripheral surface of a cylindrical portion of the seat ring and an inner peripheral surface of a tubular portion of the valve box. 前記空間部内に前記弁箱及び前記シートリングとは別の部材である略リング形状の断熱部材をさら備え、
前記断熱部材が、前記シートリングの円筒部の外周面と前記弁箱の筒状部の内周面との間で半径方向に対して押圧挟持されるように構成された請求項１に記載するバルブ断熱構造。 A substantially ring-shaped heat insulating member, which is a member different from the valve box and the seat ring, is further provided in the space.
The first aspect of the present invention is claimed in which the heat insulating member is configured to be pressed and sandwiched in the radial direction between the outer peripheral surface of the cylindrical portion of the seat ring and the inner peripheral surface of the tubular portion of the valve box. Valve insulation structure. 前記断熱部材は、放射状に複数に分割されて構成された請求項２に記載するバルブ断熱構造。 The valve heat insulating structure according to claim 2, wherein the heat insulating member is radially divided into a plurality of parts. 前記弁箱が、該筒状部に連続する連接部をさらに有し、前記バルブが、バルブ駆動部に固定する固定部と、前記弁箱の連接部に直接的又は間接的に接続される接続部と、を有する首部材と、前記首部材、前記弁箱の前記連接部、及び前記シートリングに回転可能に貫通され、貫通方向先端が前記弁体に固定された弁棒と、さらに備えたものであって、
前記バルブ断熱構造が、
前記弁箱の前記連接部と前記首部材との間に介装された断熱性を有する介装部材をさらに備えた請求項１乃至３いずれか一項に記載のバルブ断熱構造。 The valve box further has a connecting portion continuous with the tubular portion, and the valve is directly or indirectly connected to the fixing portion fixed to the valve driving portion and the connecting portion of the valve box. Further provided with a neck member having a portion, a valve rod rotatably penetrated through the neck member, the connecting portion of the valve box, and the seat ring, and a penetration direction tip fixed to the valve body. It ’s a thing,
The valve insulation structure
The valve heat insulating structure according to any one of claims 1 to 3, further comprising an interposing member having a heat insulating property interposed between the connecting portion of the valve box and the neck member. 請求項１乃至４いずれか一項に記載のバルブ断熱構造と、
前記弁箱と、
前記シートリングと、
前記弁体と、を備えたバルブ。 The valve heat insulating structure according to any one of claims 1 to 4.
With the valve box
With the seat ring
A valve comprising the valve body. 請求項４記載のバルブ断熱構造と、
前記弁箱と、
前記シートリングと、
前記弁体と、
前記首部材と、
前記弁棒と、を備えたバルブ。 The valve insulation structure according to claim 4 and
With the valve box
With the seat ring
With the valve body
With the neck member
A valve comprising the valve rod. 前記弁棒と反対方向から前記シートリングに回転可能に貫通され、貫通方向先端が前記弁体に固定された補助弁棒を備え、
前記断熱部材は、前記補助弁棒を回転可能に保持するように構成された請求項６に記載するバルブ。 It is provided with an auxiliary valve rod that is rotatably penetrated by the seat ring from the direction opposite to the valve rod and whose tip in the penetration direction is fixed to the valve body.
The valve according to claim 6, wherein the heat insulating member is configured to rotatably hold the auxiliary valve rod.
JP2021117797A 2020-07-22 2021-07-16 Valve heat insulation structure and valve Pending JP2022022137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021117797A JP2022022137A (en) 2020-07-22 2021-07-16 Valve heat insulation structure and valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020124972 2020-07-22
JP2021117797A JP2022022137A (en) 2020-07-22 2021-07-16 Valve heat insulation structure and valve

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2020124972 Division 2020-07-22 2020-07-22

Publications (1)

Publication Number Publication Date
JP2022022137A true JP2022022137A (en) 2022-02-03

Family

ID=79729378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021117797A Pending JP2022022137A (en) 2020-07-22 2021-07-16 Valve heat insulation structure and valve

Country Status (5)

Country Link
JP (1) JP2022022137A (en)
KR (1) KR102426478B1 (en)
CN (1) CN114258468B (en)
TW (1) TWI845851B (en)
WO (1) WO2022018879A1 (en)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0814336B2 (en) * 1989-10-02 1996-02-14 株式会社巴技術研究所 Butterfly valve
JP2562722B2 (en) * 1990-07-20 1996-12-11 株式会社巴技術研究所 Butterfly valve that prevents dew condensation
JP3121494B2 (en) * 1994-05-12 2000-12-25 株式会社巴技術研究所 Butterfly valve
JPH0814437A (en) * 1994-06-29 1996-01-16 Kitz Corp Butterfly valve
JPH0798071A (en) * 1994-08-25 1995-04-11 Tomoe Gijutsu Kenkyusho:Kk Butterfly valve
JP3121518B2 (en) * 1995-04-12 2001-01-09 株式会社巴技術研究所 Butterfly valve
JP3232260B2 (en) * 1997-04-08 2001-11-26 株式会社巴技術研究所 Butterfly valve dew prevention device
JP3087111B2 (en) 1997-06-13 2000-09-11 株式会社キッツ Dew condensation prevention device for butterfly valve
JP4860589B2 (en) * 1997-11-05 2012-01-25 株式会社キッツ Butterfly valve
JP2005030435A (en) * 2003-07-08 2005-02-03 Tomoe Tech Res Co Butterfly valve
JP4117339B2 (en) * 2006-03-14 2008-07-16 株式会社巴技術研究所 Butterfly valve
KR100947498B1 (en) * 2007-12-24 2010-03-17 주식회사 코펙스 The Cyclone valve for controlling high-temperature differential steel gas
TWM509289U (en) * 2015-05-22 2015-09-21 Pao-Ying Wang Butterfly valves
CN208845820U (en) * 2018-06-08 2019-05-10 捷斯特阀门（天津）有限公司 A kind of low thermally conductive stainless steel butterfly valve that do not condense

Also Published As

Publication number Publication date
CN114258468A (en) 2022-03-29
TWI845851B (en) 2024-06-21
KR20220012780A (en) 2022-02-04
TW202206734A (en) 2022-02-16
WO2022018879A1 (en) 2022-01-27
CN114258468B (en) 2024-04-09
KR102426478B1 (en) 2022-07-27

Similar Documents

Publication Publication Date Title
JP5404927B2 (en) Fluid control valve
TWI551793B (en) Ball screw device
WO2016063980A1 (en) Magnetic fluid sealing structure for high-speed rotation
US20120326069A1 (en) Step type valve
US10415683B2 (en) Speed reducer for vehicle
JP6300947B2 (en) Fluid control valve
US20170022944A1 (en) Exhaust flap device for an internal combustion engine
WO2022018879A1 (en) Valve thermal insulating structure, and valve
JP7058736B2 (en) Control valve, flow control valve
JP6849258B1 (en) Valve structure and valve
WO2019146243A1 (en) Welding structure
JP2012067812A (en) Connecting spring and passage switching valve
JP3259207B2 (en) Electric valve
JPH033097B2 (en)
JP4832385B2 (en) Attenuator bearing structure
JP3130862B2 (en) Thermal isolation structure of valve drive shaft in valve device
JPH0681993B2 (en) Butterfly valve that prevents dew condensation
JPS63145877A (en) Valve box for butterfly type valve
JPH11166664A (en) Heat insulating structure for valve opening/closing torque transmitting shaft in valve device
WO2017154204A1 (en) Valve device
JP2002309966A (en) Throttle valve with built-in motor
JP2007198499A (en) Rolling bearing with resin pulley
JPH0875025A (en) Electric operated valve

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210921

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20230609

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20240327

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20240402

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20240603